Merge branch 'switch_camera_only' of https://github.com/IfcOpenShell/IfcOpenShell into switch_camera_only

# Conflicts: # src/blenderbim/blenderbim/bim/module/drawing/operator.py
shift + click with bim.activate_drawing switches view without turning off/off objects in scene
2026-08-06 16:01:36 +00:00 · 2024-06-05 11:12:01 -05:00 · 2024-06-05 11:03:33 -05:00 · 2024-06-05 08:21:28 -05:00 · 2024-06-05 08:12:22 -05:00 · 2024-06-05 07:43:17 -05:00
1127 changed files with 73195 additions and 33396 deletions
@@ -16,7 +16,7 @@ jobs:
    - run: echo ok go

  build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
    needs: activate
    steps:
    - uses: actions/checkout@v2
@@ -80,7 +80,7 @@ jobs:
        path: build/assets/Ifc*

  deliver:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
    needs: build
    name: Docker Build, Tag, Push

@@ -39,7 +39,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        pyver: [py39, py310, py311]
+        pyver: [py39, py310, py311, py312]
        config:
          - {
            name: "Windows Build",
@@ -0,0 +1,48 @@
+name: ci-bsdd-pypi
+
+on:
+  schedule:
+    #         ┌───────────── minute (0 - 59)
+    #         │  ┌───────────── hour (0 - 23)
+    #         │  │ ┌───────────── day of the month (1 - 31)
+    #         │  │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+    #         │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+    #         *  * * * *
+    - cron: "0 0 18 * *"
+  workflow_dispatch:
+
+env:
+  major: 0
+  minor: 0
+  name: ifcopenshell
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
+        with:
+          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
+      - name: Compile
+        run: |
+          pip install build
+          cd src/bsdd &&
+          make dist
+      - name: Publish a Python distribution to PyPI
+        uses: ortega2247/pypi-upload-action@master
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages_dir: src/bsdd/dist
@@ -0,0 +1,48 @@
+name: ci-ifcclash-pypi
+
+on:
+  schedule:
+    #         ┌───────────── minute (0 - 59)
+    #         │  ┌───────────── hour (0 - 23)
+    #         │  │ ┌───────────── day of the month (1 - 31)
+    #         │  │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+    #         │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+    #         *  * * * *
+    - cron: "0 0 18 * *"
+  workflow_dispatch:
+
+env:
+  major: 0
+  minor: 0
+  name: ifcopenshell
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
+        with:
+          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
+      - name: Compile
+        run: |
+          pip install build
+          cd src/ifcclash &&
+          make dist
+      - name: Publish a Python distribution to PyPI
+        uses: ortega2247/pypi-upload-action@master
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages_dir: src/ifcclash/dist
@@ -0,0 +1,48 @@
+name: ci-ifccsv-pypi
+
+on:
+  schedule:
+    #         ┌───────────── minute (0 - 59)
+    #         │  ┌───────────── hour (0 - 23)
+    #         │  │ ┌───────────── day of the month (1 - 31)
+    #         │  │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+    #         │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+    #         *  * * * *
+    - cron: "0 0 18 * *"
+  workflow_dispatch:
+
+env:
+  major: 0
+  minor: 0
+  name: ifcopenshell
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
+        with:
+          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
+      - name: Compile
+        run: |
+          pip install build
+          cd src/ifccsv &&
+          make dist
+      - name: Publish a Python distribution to PyPI
+        uses: ortega2247/pypi-upload-action@master
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages_dir: src/ifccsv/dist
@@ -1,6 +1,7 @@
 name: ci-ifcopenshell-pypi

 on:
+  workflow_dispatch:
  schedule:
    #         ┌───────────── minute (0 - 59)
    #         │  ┌───────────── hour (0 - 23)
@@ -35,7 +36,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        pyver: [py36, py37, py38, py39, py310, py311]
+        pyver: [py39, py310, py311, py312]
        config:
          - {
            name: "Windows Build",
@@ -57,7 +58,7 @@ jobs:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
        with:
-          python-version: '3.10' # Version range or exact version of a Python version to use, using SemVer's version range syntax
+          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
      - run: echo ${{ env.DATE }}
      - name: Get current date
@@ -0,0 +1,48 @@
+name: ci-ifcpatch-pypi
+
+on:
+  schedule:
+    #         ┌───────────── minute (0 - 59)
+    #         │  ┌───────────── hour (0 - 23)
+    #         │  │ ┌───────────── day of the month (1 - 31)
+    #         │  │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+    #         │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+    #         *  * * * *
+    - cron: "0 0 18 * *"
+  workflow_dispatch:
+
+env:
+  major: 0
+  minor: 0
+  name: ifcopenshell
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
+        with:
+          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
+      - name: Compile
+        run: |
+          pip install build
+          cd src/ifcpatch &&
+          make dist
+      - name: Publish a Python distribution to PyPI
+        uses: ortega2247/pypi-upload-action@master
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages_dir: src/ifcpatch/dist
@@ -0,0 +1,53 @@
+name: Publish-ifcsverchok
+
+on:
+  push:
+    paths:
+      - '.github/workflows/ci-ifcsverchok-build.yml'
+      - 'src/ifcsverchok/*'
+    branches:
+      - v0.7.0
+
+env:
+  major: 0
+  minor: 0
+  name: ifcsverchok
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    name: ifcsverchok
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
+        with:
+          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
+          python-version: '3.11'
+      - run: echo ${{ env.DATE }}
+      - name: Get current date
+        id: date
+        run: echo "::set-output name=date::$(date +'%y%m%d')"
+      - name: Compile
+        run: |
+          cd src/ifcsverchok
+          make dist
+      - name: Upload Zip file to release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: src/ifcsverchok/dist/ifcsverchok-${{steps.date.outputs.date}}.zip
+          asset_name: ifcsverchok-${{steps.date.outputs.date}}.zip
+          tag: "ifcsverchok-${{steps.date.outputs.date}}"
+          overwrite: true
+          body: "ifcsverchok build for ${{steps.date.outputs.date}}"
@@ -9,9 +9,6 @@ on:
    #         │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
    #         *  * * * *
    - cron: "0 0 18 * *"
-  push:
-    paths:
-      - '.github/workflows/ci-ifctester-pypi.yml'
  workflow_dispatch:

 env:
@@ -30,7 +27,6 @@ jobs:

  build:
    needs: activate
-    name: ${{ matrix.config.name }}-${{ matrix.pyver }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
@@ -38,12 +34,7 @@ jobs:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
        with:
-          python-version: '3.10' # Version range or exact version of a Python version to use, using SemVer's version range syntax
-          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
-      - run: echo ${{ env.DATE }}
-      - name: Get current date
-        id: date
-        run: echo "::set-output name=date::$(date +'%y%m%d')"
+          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
      - name: Compile
        run: |
          pip install build
@@ -46,7 +46,7 @@ jobs:
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
-          pip install xmlschema xsdata numpy lxml pytest isodate lark networkx tabulate python-dateutil
+          pip install xmlschema xsdata numpy lxml pytest isodate lark networkx tabulate python-dateutil shapely
          pip install src/bcf --no-deps
          pip install https://github.com/Andrej730/aud/archive/refs/heads/master-reduced-size.zip

@@ -90,7 +90,7 @@ jobs:
               -DPYTHON_INCLUDE_DIR:PATH=${{ env.pythonLocation }}/include/python3.11 \
               -DPYTHON_LIBRARY:FILEPATH=${{ env.pythonLocation }}/lib/libpython3.11.so \
               -DCOLLADA_SUPPORT=Off \
-               "-DSCHEMA_VERSIONS=2x3;4;4x3_add1" \
+               "-DSCHEMA_VERSIONS=2x3;4;4x3;4x3_add1;4x3_add2" \
               -DGLTF_SUPPORT=On \
               -DJSON_INCLUDE_DIR=/usr/include \
               -DCGAL_INCLUDE_DIR=/usr/include \
@@ -76,8 +76,14 @@ src/ifcopenshell-python/test/build
 # blenderbim libs
 src/blenderbim/blenderbim/libs

+# blenderbim i18n
+src/blenderbim/blenderbim/translations.py
+
 # blenderbim test temp files
 src/blenderbim/test/files/temp
+src/blenderbim/test/files/basic.ifc.cache.blend
+src/blenderbim/test/files/basic.ifc.cache.sqlite
+
 src/blenderbim/drawings
 src/blenderbim/layouts

@@ -18,14 +18,14 @@ and many other libraries, CLI apps, and more. Support is also provided for auxil
 For more information, see:

 * [IfcOpenShell Website](http://ifcopenshell.org)
-* [IfcOpenShell Documentation](http://blenderbim.org/docs-python)
-  * [IfcOpenShell C++ Installation](https://blenderbim.org/docs-python/ifcopenshell/installation.html)
-  * [IfcOpenShell Python Installation](https://blenderbim.org/docs-python/ifcopenshell-python/installation.html)
-  * [IfcOpenShell Python Hello World Tutorial](https://blenderbim.org/docs-python/ifcopenshell-python/hello_world.html)
+* [IfcOpenShell Documentation](https://docs.ifcopenshell.org)
+  * [IfcOpenShell C++ Installation](https://docs.ifcopenshell.org/ifcopenshell/installation.html)
+  * [IfcOpenShell Python Installation](https://docs.ifcopenshell.org/ifcopenshell-python/installation.html)
+  * [IfcOpenShell Python Hello World Tutorial](https://docs.ifcopenshell.org/ifcopenshell-python/hello_world.html)
 * [BlenderBIM Add-on Website](https://blenderbim.org)
-* [BlenderBIM Add-on Documentation](http://blenderbim.org/docs)
-  * [Add-on Installation](https://blenderbim.org/docs/users/installation.html)
-  * [Exploring an IFC model](https://blenderbim.org/docs/users/exploring_an_ifc_model.html)
+* [BlenderBIM Add-on Documentation](https://docs.blenderbim.org/index.html)
+  * [Add-on Installation](https://docs.blenderbim.org/users/installation.html)
+  * [Exploring an IFC model](https://docs.blenderbim.org/users/exploring_an_ifc_model.html)

 | Service                                         | Status                                                                                                                                       |
 | ----------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
@@ -12,7 +12,7 @@ RUN apt-get -y update && apt-get -y install unzip curl
 # Install AWS Lambda runtime interface client
 RUN pip install --target ${FUNCTION_DIR} awslambdaric

-# Set the IfcOpenShell build version (check available builds at: https://blenderbim.org/docs-python/ifcopenshell-python/installation.html)
+# Set the IfcOpenShell build version (check available builds at: https://docs.ifcopenshell.org/ifcopenshell-python/installation.html)
 ARG IFC_OPENSHELL_BUILD="39-v0.7.0-476ab50"

 # Download and extract IfcOpenShell
@@ -15,7 +15,7 @@
    <licenseUrl>https://github.com/IfcOpenShell/IfcOpenShell/blob/v0.7.0/COPYING</licenseUrl>
    <requireLicenseAcceptance>true</requireLicenseAcceptance>
    <projectSourceUrl>https://github.com/IfcOpenShell/IfcOpenShell</projectSourceUrl>
-    <docsUrl>https://blenderbim.org/docs/</docsUrl>
+    <docsUrl>https://docs.blenderbim.org/</docsUrl>
    <!--<mailingListUrl></mailingListUrl>-->
    <bugTrackerUrl>https://github.com/IfcOpenShell/IfcOpenShell/issues</bugTrackerUrl>
    <tags>blender bim blenderbim ifc python opensource foss</tags>
@@ -17,7 +17,7 @@
 #                                                                              #
 ################################################################################

-cmake_minimum_required(VERSION 3.1.3)
+cmake_minimum_required(VERSION 3.5)
 set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON) # not necessary, but encouraged

@@ -27,13 +27,18 @@ cmake_policy(SET CMP0048 NEW)
 cmake_policy(SET CMP0074 NEW)
 cmake_policy(SET CMP0078 OLD)
 cmake_policy(SET CMP0086 NEW)
+if (POLICY CMP0144)
+cmake_policy(SET CMP0144 NEW) # find_package() uses upper-case <PACKAGENAME>_ROOT variables.
+endif()

 if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE "Release")
 endif()

 # use extra version to make pre-release using eg semver
-set(EXTRA_VERSION "-alpha.3")
+if(NOT DEFINED EXTRA_VERSION)
+    set(EXTRA_VERSION "-alpha.3")
+endif()

 option(MINIMAL_BUILD "The build is to make a minimal version of IFC converter from OCCT into IFC." OFF)
 option(WASM_BUILD "Build a WebAssembly binary." OFF)
@@ -186,7 +191,7 @@ if(GLTF_SUPPORT AND BUILD_CONVERT)
    set(SWIG_DEFINES ${SWIG_DEFINES} -DWITH_GLTF)
 endif()

-# Add USD support to serializers 
+# Add USD support to serializers
 if(USD_SUPPORT)
    UNIFY_ENVVARS_AND_CACHE(USD_INCLUDE_DIR)
    UNIFY_ENVVARS_AND_CACHE(USD_LIBRARY_DIR)
@@ -209,13 +214,13 @@ if(USD_SUPPORT)
    endif()

    set(USD_LIBRARIES
-            usd_usd 
+            usd_usd
            usd_usdGeom
-            usd_usdShade 
-            usd_usdLux 
-            usd_vt 
-            usd_sdf 
-            usd_tf 
+            usd_usdShade
+            usd_usdLux
+            usd_vt
+            usd_sdf
+            usd_tf
            usd_gf
        )

@@ -373,13 +378,34 @@ if(BUILD_IFCGEOM)
        message(STATUS "Looking for Open CASCADE include files in: ${OCC_INCLUDE_DIR}")
    endif()

+    if(OCC_INCLUDE_DIR)
+        file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MAJOR
+            REGEX "#define OCC_VERSION_MAJOR.*"
+        )
+        string(REGEX MATCH "[0-9]+" OCC_MAJOR ${OCC_MAJOR})
+        file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MINOR
+          REGEX "#define OCC_VERSION_MINOR.*"
+        )
+        string(REGEX MATCH "[0-9]+" OCC_MINOR ${OCC_MINOR})
+        file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MAINT
+          REGEX "#define OCC_VERSION_MAINTENANCE.*"
+        )
+        string(REGEX MATCH "[0-9]+" OCC_MAINT ${OCC_MAINT})     
+        set(OCC_VERSION_STRING "${OCC_MAJOR}.${OCC_MINOR}.${OCC_MAINT}")
+    endif(OCC_INCLUDE_DIR)
+
    set(OPENCASCADE_LIBRARY_NAMES
        TKernel TKMath TKBRep TKGeomBase TKGeomAlgo TKG3d TKG2d TKShHealing TKTopAlgo TKMesh TKPrim TKBool TKBO
-        TKFillet TKSTEP TKSTEPBase TKSTEPAttr TKXSBase TKSTEP209 TKIGES TKOffset TKHLR
+        TKFillet TKXSBase TKOffset TKHLR

        # @todo investigate the exact conditions when this is necessary
        TKBin
    )
+    if(OCC_VERSION_STRING VERSION_LESS 7.8.0)
+        list(APPEND OPENCASCADE_LIBRARY_NAMES  TKIGES TKSTEPBase TKSTEPAttr TKSTEP209 TKSTEP)
+    else(OCC_VERSION_STRING VERSION_LESS 7.8.0)
+        list(APPEND OPENCASCADE_LIBRARY_NAMES TKDESTEP TKDEIGES)
+    endif(OCC_VERSION_STRING VERSION_LESS 7.8.0)

    if("${OCC_LIBRARY_DIR}" STREQUAL "")
        find_library(OCC_LIBRARY TKernel
@@ -435,7 +461,7 @@ if(BUILD_IFCGEOM)

    if(OCCT_STATIC)
        find_package(Threads)
-        
+
        if(WASM_BUILD)
            set(OPENCASCADE_LIBRARIES ${OPENCASCADE_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
        else()
@@ -447,7 +473,7 @@ if(BUILD_IFCGEOM)
                set(OPENCASCADE_LIBRARIES -Wl,--start-group ${OPENCASCADE_LIBRARIES} -Wl,--end-group ${CMAKE_THREAD_LIBS_INIT})
            endif()
        endif()
-        
+
        if (NOT APPLE AND NOT WIN32)
            set(OPENCASCADE_LIBRARIES ${OPENCASCADE_LIBRARIES} "rt")
        endif()
@@ -656,6 +682,10 @@ if(ENABLE_BUILD_OPTIMIZATIONS)
        set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
        set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELEASE} -O3")
    endif()
+else()
+    if(MSVC)
+        set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /Od")
+    endif()
 endif()

 if(MSVC)
@@ -755,6 +785,8 @@ if(NOT SCHEMA_VERSIONS)
    endif()
 endif()

+message(STATUS "IFC SCHEMA_VERSIONS that will be used for the build: ${SCHEMA_VERSIONS}.")
+
 foreach(schema ${SCHEMA_VERSIONS})
    add_definitions(-DHAS_SCHEMA_${schema})
 endforeach()
@@ -837,7 +869,7 @@ if (BUILD_IFCGEOM)
 	if (WASM_BUILD)
 	    set(IFCOPENSHELL_LIBRARIES ${IFCOPENSHELL_LIBRARIES} IfcGeom ${IFCGEOM_SCHEMA_LIBRARIES})
 	else()
-	    set(IFCOPENSHELL_LIBRARIES ${IFCOPENSHELL_LIBRARIES} IfcGeom ${IFCGEOM_SCHEMA_LIBRARIES} IfcGeom ${IFCGEOM_SCHEMA_LIBRARIES})	
+	    set(IFCOPENSHELL_LIBRARIES ${IFCOPENSHELL_LIBRARIES} IfcGeom ${IFCGEOM_SCHEMA_LIBRARIES} IfcGeom ${IFCGEOM_SCHEMA_LIBRARIES})
 	endif()
 endif()

@@ -900,7 +932,7 @@ if(BUILD_IFCGEOM)
        add_library(IfcGeom_ifc${schema} STATIC ${IFCGEOM_FILES})
        set_target_properties(IfcGeom_ifc${schema} PROPERTIES COMPILE_FLAGS "-DIFC_GEOM_EXPORTS -DIfcSchema=Ifc${schema}")
        if (NOT WASM_BUILD)
-            target_link_libraries(IfcGeom_ifc${schema} IfcParse ${OPENCASCADE_LIBRARIES})	    
+            target_link_libraries(IfcGeom_ifc${schema} IfcParse ${OPENCASCADE_LIBRARIES})
        endif()
    endforeach()

@@ -936,7 +968,7 @@ if(BUILD_CONVERT OR BUILD_IFCPYTHON)
    foreach(schema ${SCHEMA_VERSIONS})
        add_library(Serializers_ifc${schema} STATIC ${SERIALIZERS_S_FILES})
        set_target_properties(Serializers_ifc${schema} PROPERTIES COMPILE_FLAGS "-DIFC_GEOM_EXPORTS -DIfcSchema=Ifc${schema}")
-        
+
        if (WASM_BUILD)
            target_link_libraries(Serializers_ifc${schema} ${HDF5_LIBRARIES})
        else()
@@ -1117,9 +1149,10 @@ endif()

 # Packaging
 list(APPEND CPACK_SOURCE_IGNORE_FILES
-    .git
-    .gitignore
+    "/\\\\.git"
+    "/build/"
 )
+set(CPACK_SOURCE_INSTALLED_DIRECTORIES "${CMAKE_SOURCE_DIR}/..;/")
 set(CPACK_PACKAGE_NAME "${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}${EXTRA_VERSION}")
 set(CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION}${EXTRA_VERSION}")
 SET(CPACK_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}${EXTRA_VERSION}-${CMAKE_SYSTEM_NAME}")
@@ -1142,7 +1175,7 @@ endforeach(COMPONENT)

 set(CPACK_DEBIAN_PACKAGE_NAME "${PROJECT_NAME}")
 set(CPACK_DEBIAN_PACKAGE_MAINTAINER "${CPACK_PACKAGE_CONTACT}")
-set(CPACK_DEBIAN_PACKAGE_DEPENDS "python3, libxml2, libocct-foundation-dev, libocct-modeling-algorithms-dev, libocct-modeling-data-dev, libocct-ocaf-dev, libocct-visualization-dev, libocct-data-exchange-dev, libhdf5-serial-dev, libpython3.8, python3-pytest ${BOOST_DEPS}")
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "python3, libxml2, libocct-foundation-dev, libocct-modeling-algorithms-dev, libocct-modeling-data-dev, libocct-ocaf-dev, libocct-visualization-dev, libocct-data-exchange-dev, libhdf5-serial-dev, libpython3-dev, python3-pytest ${BOOST_DEPS}")
 set(CPACK_DEBIAN_PACKAGE_DESCRIPTION_SUMMARY "${CPACK_PACKAGE_DESCRIPTION_SUMMARY}")
 set(CPACK_DEBIAN_PACKAGE_DESCRIPTION "${CPACK_PACKAGE_DESCRIPTION}")
 set(CPACK_DEBIAN_PACKAGE_PRIORITY "optional")
@@ -76,7 +76,7 @@ PROJECT_NAME = "IfcOpenShell"
 USE_CURRENT_PYTHON_VERSION = os.getenv("USE_CURRENT_PYTHON_VERSION")
 ADD_COMMIT_SHA = os.getenv("ADD_COMMIT_SHA")

-PYTHON_VERSIONS = ["3.6.14", "3.7.13", "3.8.13", "3.9.11", "3.10.3", "3.11.7", "3.12.1"]
+PYTHON_VERSIONS = ["3.9.11", "3.10.3", "3.11.8", "3.12.1"]
 JSON_VERSION = "v3.6.1"
 OCE_VERSION = "0.18.3"
 OCCT_VERSION = "7.5.3"
@@ -254,6 +254,11 @@ if not os.path.exists(LOG_FILE):
    open(LOG_FILE, "w").close()
 logger.info(f"using command log file '{LOG_FILE}'")

+# Causing havoc in python 3.11 build
+try:
+    del os.environ['__PYVENV_LAUNCHER__']
+except: pass
+
 def run(cmds, cwd=None, can_fail=False):

    """
@@ -284,8 +289,9 @@ if platform.system() == "Darwin":
        # Apparently not supported
        PYTHON_VERSIONS = [pv for pv in PYTHON_VERSIONS if tuple(map(int, pv.split("."))) >= (3, 7)]
    if run(["sw_vers", "-productVersion"]) < "10.16":
-        # Apparently not supported
-        PYTHON_VERSIONS = [pv for pv in PYTHON_VERSIONS if tuple(map(int, pv.split("."))) < (3, 11)]
+        # This is now solved with the '__PYVENV_LAUNCHER__' hack
+        # PYTHON_VERSIONS = [pv for pv in PYTHON_VERSIONS if tuple(map(int, pv.split("."))) < (3, 11)]
+        pass

 BOOST_VERSION_UNDERSCORE = BOOST_VERSION.replace(".", "_")

@@ -13,7 +13,7 @@ readme = "README.md"
 requires-python = ">=3.8"
 keywords = ["IFC", "BCF", "BIM"]
 dependencies = [
-    "xsdata",
+    "xsdata>=24.4",
    "numpy",
    "ifcopenshell",
 ]
@@ -10,14 +10,14 @@ from xsdata.formats.dataclass.serializers.config import SerializerConfig
 def build_xml_parser(context: Optional[XmlContext] = None) -> XmlParser:
    """Return a parser for an XML file."""
    parser = XmlParser(context=context or XmlContext())
-    parser.register_namespace("xs", "http://www.w3.org/2001/XMLSchema")
+    parser.register_namespace(ns_map=parser.ns_map, prefix="xs", uri="http://www.w3.org/2001/XMLSchema")
    return parser


 def build_serializer(context: Optional[XmlContext] = None) -> XmlSerializer:
    """Return a serializer for an XML file."""
    return XmlSerializer(
-        config=SerializerConfig(pretty_print=True),
+        config=SerializerConfig(indent="  "),
        context=context or XmlContext(),
    )

@@ -36,8 +36,9 @@ class AbstractXmlParserSerializer(Protocol):
            xml: The XML file as bytes.
            clazz: The class to parse to.
        """
+        ...

-    def serialize(self, obj: T, ns_map: Optional[dict[str, str]] = None) -> str:
+    def serialize(self, obj: object, ns_map: Optional[dict[str, str]] = None) -> str:
        """
        Serialize an object to XML.

@@ -48,6 +49,7 @@ class AbstractXmlParserSerializer(Protocol):
        Returns:
            The XML as string.
        """
+        ...


 class XmlParserSerializer:
@@ -68,7 +70,7 @@ class XmlParserSerializer:
        """
        return self.parser.from_bytes(xml, clazz)

-    def serialize(self, obj: T, ns_map: Optional[dict[str, str]] = None) -> str:
+    def serialize(self, obj: object, ns_map: Optional[dict[Optional[str], str]] = None) -> str:
        """
        Serialize an object to XML.

@@ -79,5 +81,5 @@ class XmlParserSerializer:
        Returns:
            The XML as string.
        """
-        ns_map = ns_map or {"xs": "http://www.w3.org/2001/XMLSchema"}
+        ns_map = ns_map or self.parser.ns_map or {"xs": "http://www.w3.org/2001/XMLSchema"}
        return self.serializer.render(obj, ns_map)
@@ -55,143 +55,27 @@ PYLIBDIR:=python3.11
 PYNUMBER:=311
 PYPI_VERSION:=3.11
 endif
+ifeq ($(PYVERSION), py312)
+PYLIBDIR:=python3.12
+PYNUMBER:=312
+PYPI_VERSION:=3.12
+endif

 ifeq ($(PLATFORM), linux)
 PYPI_PLATFORM:=--platform manylinux_2_17_x86_64
-LXML_ARCH:=manylinux_2_28_x86_64
-SHAPELY_ARCH:=manylinux_2_17_x86_64.manylinux2014_x86_64
-PILLOW_ARCH:=manylinux_2_28_x86_64
-ifeq ($(PYVERSION), py39)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/linux-64/hpp-fcl-2.4.0-py39h359ec1e_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/linux-64/eigenpy-3.2.0-py39hb1babde_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/linux-64/boost-1.78.0-py39h7c9e3ff_4.tar.bz2
-endif
-ifeq ($(PYVERSION), py310)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/linux-64/hpp-fcl-2.4.0-py310hd002f03_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/linux-64/eigenpy-3.2.0-py310hcfe0b05_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/linux-64/boost-1.78.0-py310hc4a4660_4.tar.bz2
-endif
-ifeq ($(PYVERSION), py311)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/linux-64/hpp-fcl-2.4.0-py311h04f086a_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/linux-64/eigenpy-3.2.0-py311h995a085_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/linux-64/boost-1.78.0-py311h59ea3da_3.tar.bz2
-endif
-ASSIMP_URL:=https://anaconda.org/conda-forge/assimp/5.0.1/download/linux-64/assimp-5.0.1-hedfc422_6.tar.bz2
-QHULL_URL:=https://anaconda.org/conda-forge/qhull/2020.2/download/linux-64/qhull-2020.2-h4bd325d_2.tar.bz2
-OCTOMAP_URL:=https://anaconda.org/conda-forge/octomap/1.9.8/download/linux-64/octomap-1.9.8-h924138e_0.tar.bz2
-BOOSTCPP_URL:=https://anaconda.org/conda-forge/boost-cpp/1.78.0/download/linux-64/boost-cpp-1.78.0-h6582d0a_3.conda
-ZLIB_URL:=https://anaconda.org/conda-forge/zlib/1.2.11/download/linux-64/zlib-1.2.11-h516909a_1010.tar.bz2
 endif

 ifeq ($(PLATFORM), macos)
-PYPI_PLATFORM:=--platform macosx_10_9_x86_64
-SHAPELY_ARCH:=macosx_10_9_x86_64
-PILLOW_ARCH:=macosx_10_10_x86_64
-ifeq ($(PYVERSION), py39)
-LXML_ARCH:=macosx_11_0_x86_64
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/osx-64/hpp-fcl-2.4.0-py39h26350b9_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/osx-64/eigenpy-3.2.0-py39h3323527_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/osx-64/boost-1.78.0-py39h953a6b8_4.tar.bz2
-endif
-ifeq ($(PYVERSION), py310)
-LXML_ARCH:=macosx_11_0_x86_64
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/osx-64/hpp-fcl-2.4.0-py310ha216469_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/osx-64/eigenpy-3.2.0-py310h33a8c9b_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/osx-64/boost-1.78.0-py310h3e792ce_4.tar.bz2
-endif
-ifeq ($(PYVERSION), py311)
-LXML_ARCH:=macosx_11_0_universal2
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/osx-64/hpp-fcl-2.4.0-py311hebdd1a2_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/osx-64/eigenpy-3.2.0-py311h62e90b6_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/osx-64/boost-1.78.0-py311h349b758_4.tar.bz2
-endif
-ASSIMP_URL:=https://anaconda.org/conda-forge/assimp/5.0.1/download/osx-64/assimp-5.0.1-h1224e73_6.tar.bz2
-QHULL_URL:=https://anaconda.org/conda-forge/qhull/2020.2/download/osx-64/qhull-2020.2-h940c156_2.tar.bz2
-OCTOMAP_URL:=https://anaconda.org/conda-forge/octomap/1.9.8/download/osx-64/octomap-1.9.8-hb8565cd_0.tar.bz2
-BOOSTCPP_URL:=https://anaconda.org/conda-forge/boost-cpp/1.78.0/download/osx-64/boost-cpp-1.78.0-hf5ba120_3.conda
-ZLIB_URL:=https://anaconda.org/conda-forge/zlib/1.2.11/download/osx-64/zlib-1.2.11-h7795811_1010.tar.bz2
+PYPI_PLATFORM:=--platform macosx_10_10_x86_64
 endif

 ifeq ($(PLATFORM), macosm1)
 PYPI_PLATFORM:=--platform macosx_11_0_arm64
-LXML_ARCH:=macosx_11_0_universal2
-SHAPELY_ARCH:=macosx_11_0_arm64
-PILLOW_ARCH:=macosx_11_0_arm64
-ifeq ($(PYVERSION), py39)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/osx-arm64/hpp-fcl-2.4.0-py39h82b2ff2_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/osx-arm64/eigenpy-3.2.0-py39h3a9e884_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/osx-arm64/boost-1.78.0-py39h99de9ae_4.tar.bz2
-endif
-ifeq ($(PYVERSION), py310)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/osx-arm64/hpp-fcl-2.4.0-py310hdb6c3eb_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/osx-arm64/eigenpy-3.2.0-py310h96e9823_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/osx-arm64/boost-1.78.0-py310h629746b_4.tar.bz2
-endif
-ifeq ($(PYVERSION), py311)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/osx-arm64/hpp-fcl-2.4.0-py311hc0c29b9_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/osx-arm64/eigenpy-3.2.0-py311h24fa84d_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/osx-arm64/boost-1.78.0-py311h5c64717_4.tar.bz2
-endif
-ASSIMP_URL:=https://anaconda.org/conda-forge/assimp/5.0.1/download/osx-arm64/assimp-5.0.1-h0f81e16_7.tar.bz2
-QHULL_URL:=https://anaconda.org/conda-forge/qhull/2020.2/download/osx-arm64/qhull-2020.2-hc021e02_2.tar.bz2
-OCTOMAP_URL:=https://anaconda.org/conda-forge/octomap/1.9.8/download/osx-arm64/octomap-1.9.8-hffc8910_0.tar.bz2
-BOOSTCPP_URL:=https://anaconda.org/conda-forge/boost-cpp/1.78.0/download/osx-arm64/boost-cpp-1.78.0-h9ed8d21_3.conda
-ZLIB_URL:=https://anaconda.org/conda-forge/zlib/1.2.11/download/osx-arm64/zlib-1.2.11-h90dfc92_1014.tar.bz2
 endif

 ifeq ($(PLATFORM), win)
 PYPI_PLATFORM:=--platform win_amd64
-LXML_ARCH:=win_amd64
-SHAPELY_ARCH:=win_amd64
-PILLOW_ARCH:=win_amd64
-ifeq ($(PYVERSION), py39)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/win-64/hpp-fcl-2.4.0-py39hf3ebc58_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/win-64/eigenpy-3.2.0-py39ha1f6a47_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/win-64/boost-1.78.0-py39hea4d8d1_4.tar.bz2
 endif
-ifeq ($(PYVERSION), py310)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/win-64/hpp-fcl-2.4.0-py310h1bf3f0a_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/win-64/eigenpy-3.2.0-py310h7fb871d_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/win-64/boost-1.78.0-py310h220cb41_4.tar.bz2
-endif
-ifeq ($(PYVERSION), py311)
-HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/2.4.0/download/win-64/hpp-fcl-2.4.0-py311hd263b2c_0.conda
-EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/3.2.0/download/win-64/eigenpy-3.2.0-py311hd354db1_0.conda
-BOOST_URL:=https://anaconda.org/conda-forge/boost/1.78.0/download/win-64/boost-1.78.0-py311h12feb9d_3.tar.bz2
-endif
-ASSIMP_URL:=https://anaconda.org/conda-forge/assimp/5.2.5/download/win-64/assimp-5.2.5-h4dcb625_0.tar.bz2
-QHULL_URL:=https://anaconda.org/conda-forge/qhull/2020.2/download/win-64/qhull-2020.2-h70d2c02_2.tar.bz2
-OCTOMAP_URL:=https://anaconda.org/conda-forge/octomap/1.9.8/download/win-64/octomap-1.9.8-h91493d7_0.tar.bz2
-BOOSTCPP_URL:=https://anaconda.org/conda-forge/boost-cpp/1.78.0/download/win-64/boost-cpp-1.78.0-h9f4b32c_3.conda
-ZLIB_URL:=https://anaconda.org/conda-forge/zlib/1.2.11/download/win-64/zlib-1.2.11-h62dcd97_1010.tar.bz2
-endif
-
-LXML_NAME:=lxml
-LXML_VER:=4.9.4
-SHAPELY_NAME:=shapely
-SHAPELY_VER:=2.0.2
-PILLOW_NAME:=pillow
-PILLOW_PKG_NAME:=Pillow
-PILLOW_VER:=9.5.0
-SHAPELY_URL:=https://files.pythonhosted.org/packages/cp$(PYNUMBER)/s/$(SHAPELY_NAME)/$(SHAPELY_NAME)-$(SHAPELY_VER)-cp$(PYNUMBER)-cp$(PYNUMBER)-$(SHAPELY_ARCH).whl
-PILLOW_URL:=https://files.pythonhosted.org/packages/cp$(PYNUMBER)/p/$(PILLOW_NAME)/$(PILLOW_PKG_NAME)-$(PILLOW_VER)-cp$(PYNUMBER)-cp$(PYNUMBER)-$(PILLOW_ARCH).whl
-
-ifeq ($(PLATFORM), macosm1)
-ifeq ($(PYVERSION), py39)
-LXML_URL:=https://anaconda.org/conda-forge/lxml/4.9.1/download/osx-arm64/lxml-4.9.1-py39h0520ce3_1.tar.bz2
-endif
-ifeq ($(PYVERSION), py310)
-LXML_URL:=https://anaconda.org/conda-forge/lxml/4.9.1/download/osx-arm64/lxml-4.9.1-py310h02f21da_0.tar.bz2
-endif
-ifeq ($(PYVERSION), py311)
-LXML_URL:=https://anaconda.org/conda-forge/lxml/4.9.1/download/osx-arm64/lxml-4.9.1-py311h246f609_1.tar.bz2
-endif
-else
-LXML_URL:=https://files.pythonhosted.org/packages/cp$(PYNUMBER)/l/$(LXML_NAME)/$(LXML_NAME)-$(LXML_VER)-cp$(PYNUMBER)-cp$(PYNUMBER)-$(LXML_ARCH).whl
-endif
-$(info $$LXML_URL is [${LXML_URL}])
-$(info $$SHAPELY_URL is [${SHAPELY_URL}])
-$(info $$PILLOW_URL is [${PILLOW_URL}])

 .PHONY: bump
 bump:
@@ -211,7 +95,7 @@ endif
 	cp -r blenderbim/* dist/blenderbim/

 	# Provides IfcOpenShell Python functionality
-	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v0.7.0-6c9e130-$(PLATFORM)64.zip
+	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v0.7.0-c7830e9-$(PLATFORM)64.zip
 	cd dist/working && unzip ifcopenshell-python*
 	cp -r dist/working/ifcopenshell dist/blenderbim/libs/site/packages/

@@ -225,8 +109,10 @@ endif
 	cd dist/working && wget https://github.com/IfcOpenShell/IfcOpenShell/archive/v0.7.0.zip
 	cd dist/working && unzip v0.7.0.zip
 	# IfcOpenBot sometimes lags behind, so we hotfix the Python utilities
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcopenshell-python/ifcopenshell/util/* dist/blenderbim/libs/site/packages/ifcopenshell/util/
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcopenshell-python/ifcopenshell/api/* dist/blenderbim/libs/site/packages/ifcopenshell/api/
+	rm -rf dist/blenderbim/libs/site/packages/ifcopenshell/util/
+	rm -rf dist/blenderbim/libs/site/packages/ifcopenshell/api/
+	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcopenshell-python/ifcopenshell/util dist/blenderbim/libs/site/packages/ifcopenshell/
+	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcopenshell-python/ifcopenshell/api dist/blenderbim/libs/site/packages/ifcopenshell/
 	cp dist/working/IfcOpenShell-0.7.0/src/ifcopenshell-python/ifcopenshell/*.py dist/blenderbim/libs/site/packages/ifcopenshell/
 	cp dist/working/IfcOpenShell-0.7.0/src/ifcopenshell-python/ifcopenshell/express/rule_executor.py dist/blenderbim/libs/site/packages/ifcopenshell/express/
 	# Provides bcf functionality
@@ -264,49 +150,6 @@ endif
 	cp -r dist/working/site-packages/git dist/blenderbim/libs/site/packages/
 	rm -rf dist/working

-	# Provides Mustache templating in construction documentation
-	# TODO: remove this dependency, it seems overkill and we seem to get by with str replaces
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/3f/e7/8750ba6c6101d6aa5ceeb20c013adf2c6f3554a12c71d75654b468404bfa/pystache-0.6.0.tar.gz
-	cd dist/working && tar -xzvf pystache*
-	cd dist/working/pystache-0.6.0/ && $(PYTHON) setup.py build && cp -r build/lib/pystache ../../blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Provides SVG export in construction documentation
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/79/e8/7eb2ba188eda14a4b47e33b51f3b4978985f4116655c699bcd18c79279b5/svgwrite-1.3.1.zip
-	cd dist/working && unzip svgwrite*
-	cp -r dist/working/svgwrite-1.3.1/svgwrite dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Provides fuzzy date parsing for construction sequencing
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/be/ed/5bbc91f03fa4c839c4c7360375da77f9659af5f7086b7a7bdda65771c8e0/python-dateutil-2.8.1.tar.gz
-	cd dist/working && tar -xzvf python-dateutil*
-	cp -r dist/working/python-dateutil-2.8.1/dateutil dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Provides duration parsing for construction sequencing
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/b1/80/fb8c13a4cd38eb5021dc3741a9e588e4d1de88d895c1910c6fc8a08b7a70/isodate-0.6.0.tar.gz
-	cd dist/working && tar -xzvf isodate*
-	cp -r dist/working/isodate-0.6.0/src/isodate dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Provides networkx graph analysis for project dependency calculations
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/b0/21/adfbf6168631e28577e4af9eb9f26d75fe72b2bb1d33762a5f2c425e6c2a/networkx-2.5.1.tar.gz
-	cd dist/working && tar -xzvf networkx*
-	cp -r dist/working/networkx-2.5.1/networkx dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by networkx
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/4f/51/15a4f6b8154d292e130e5e566c730d8ec6c9802563d58760666f1818ba58/decorator-5.0.9.tar.gz
-	cd dist/working && tar -xzvf decorator*
-	cp -r dist/working/decorator-5.0.9/src/decorator.py dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
 	# Provides audio playback for costing
 	mkdir -p dist/working
 	git clone https://github.com/Andrej730/aud.git --branch master-reduced-size --depth 1 dist/working/aud
@@ -321,112 +164,13 @@ endif
 	cp dist/working/jsgantt* dist/blenderbim/bim/data/gantt/
 	rm -rf dist/working

-	# Required by IFCDiff
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/0f/ca/caead2949fbb824c7142e3774fa841aa853bb4d4331b440da8c8514dfc6f/deepdiff-5.8.1.tar.gz
-	cd dist/working && tar -xzvf deepdiff*
-	cp -r dist/working/deepdiff-5.8.1/deepdiff dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by deepdiff
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/00/55/ce2cbc6d64034b30cad81a29ba61bdba456f190f5e83c09831304bf68d6b/jsonpickle-1.2.tar.gz
-	cd dist/working && tar -xzvf jsonpickle*
-	cp -r dist/working/jsonpickle-1.2/jsonpickle dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by deepdiff
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/a3/b7/d4d69641cbe707a45c23b190f2d717466ba5accc4c70b5f7a8a450387895/ordered-set-3.1.1.tar.gz
-	cd dist/working && tar -xzvf ordered-set*
-	cp -r dist/working/ordered-set-3.1.1/ordered_set.py dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by lark
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/00/32/8076fa13e832bb4dcff379f18f228e5a53412be0631808b9ca2610c0f566/pyparsing-2.4.5.tar.gz
-	cd dist/working && tar -xzvf pyparsing*
-	cp -r dist/working/pyparsing-2.4.5/pyparsing.py dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/5b/ef/f97c3e1a7efa00e989a793fe15297214fc95ad7d9e3810586bd08ce9f0f3/xmlschema-2.0.2.tar.gz
-	cd dist/working && tar -xzvf xmlschema*
-	cp -r dist/working/xmlschema-2.0.2/xmlschema dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/ad/c7/17c9d16320d8e2cfdb27d2fd298b5e8f7a3f211025b0c1bc7a39a85bd690/xsdata-22.11.tar.gz
-	cd dist/working && tar -xzvf xsdata*
-	cp -r dist/working/xsdata-22.11/xsdata dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/11/bc/5afb61dd5d863e5cf77cd952445c50c17e65953405986f19e97e4389692a/elementpath-3.0.2.tar.gz
-	cd dist/working && tar -xzvf elementpath*
-	cp -r dist/working/elementpath-3.0.2/elementpath dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/21/9f/b251f7f8a76dec1d6651be194dfba8fb8d7781d10ab3987190de8391d08e/six-1.14.0.tar.gz
-	cd dist/working && tar -xzvf six*
-	cp -r dist/working/six-1.14.0/six.py dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by IFCCSV and ifcopenshell.util.selector
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/18/4d/8d522136c37d9e1ea74062b41b8d5e1318ebf45063ae46ce72ed60af223b/lark-parser-0.8.5.tar.gz
-	cd dist/working && tar -xzvf lark-parser*
-	cp -r dist/working/lark-parser-0.8.5/lark dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by IFC4D
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/b0/bb/9c4dddd3ca173cb56241cfb2eddfae24690dc676d357ac4cab17d0a36d9d/PyP6Xer-1.13.0.tar.gz
-	cd dist/working && tar -xzvf PyP6Xer*
-	cp -r dist/working/PyP6Xer-1.13.0/xerparser dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by QTOCalculator
-	mkdir dist/working
-	cd dist/working && wget $(SHAPELY_URL)
-	cd dist/working && cp *.whl shapely.zip && unzip shapely.zip
-	cp -r dist/working/shapely dist/blenderbim/libs/site/packages/
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/shapely.libs dist/blenderbim/libs/site/packages/
-endif
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/shapely.libs dist/blenderbim/libs/site/packages/
-endif
-	rm -rf dist/working
-
-	# Required by the BIM tool thumbnail generator
-	mkdir dist/working
-	cd dist/working && wget $(PILLOW_URL)
-	cd dist/working && cp *.whl pillow.zip && unzip pillow.zip
-	cp -r dist/working/PIL dist/blenderbim/libs/site/packages/
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/Pillow.libs dist/blenderbim/libs/site/packages/
-endif
-	rm -rf dist/working
-
-	# Required by xerparser and IFC4D
-	# TODO: remove this dependency. It's only used to show a progress bar.
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/9f/7b/76c4e5ef1a1b528fcaada4133f972e77d33c252831676cf414119ca6093d/tqdm-4.50.0.tar.gz
-	cd dist/working && tar -xzvf tqdm*
-	cp -r dist/working/tqdm-4.50.0/tqdm dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
 	mkdir dist/working
 	cd dist/working && $(PYTHON) -m venv env
 	cd dist/working && mkdir site-packages
 	# Required by IfcCSV
 	cd dist/working && . env/bin/activate && $(PIP) install pandas $(PYPI_PLATFORM) --python-version $(PYPI_VERSION) --implementation $(PYPI_IMP) --only-binary=:all: --target=./site-packages
+	# Pandas ships with very heavy tests
+	cd dist/working/site-packages/pandas && rm -rf tests
 	cd dist/working && . env/bin/activate && $(PIP) install openpyxl --target=./site-packages
 	cd dist/working && . env/bin/activate && $(PIP) install odfpy --target=./site-packages
 	# Required by IFCCityJSON
@@ -434,161 +178,39 @@ endif
 	# Provides express rule validation for ifcopenshell.validate
 	cd dist/working && . env/bin/activate && $(PIP) install pytest --target=./site-packages
 	# Provides Brickschema functionality
-	cd dist/working && . env/bin/activate && $(PIP) install brickschema[persistence] --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install "brickschema[persistence]==0.7.6a2" --target=./site-packages
+	# Required for SVG to DXF conversion
+	cd dist/working && . env/bin/activate && $(PIP) install ezdxf --target=./site-packages
+	# Required by bcf
+	cd dist/working && . env/bin/activate && $(PIP) install xsdata --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install xmlschema --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install elementpath --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install six --target=./site-packages
+	# Required by drawing module
+	cd dist/working && . env/bin/activate && $(PIP) install lxml $(PYPI_PLATFORM) --python-version $(PYPI_VERSION) --implementation $(PYPI_IMP) --only-binary=:all: --target=./site-packages
+	# Required by qto and drawing module
+	cd dist/working && . env/bin/activate && $(PIP) install shapely $(PYPI_PLATFORM) --python-version $(PYPI_VERSION) --implementation $(PYPI_IMP) --only-binary=:all: --target=./site-packages
+	# Required by the BIM type manager thumbnail generator
+	cd dist/working && . env/bin/activate && $(PIP) install pillow $(PYPI_PLATFORM) --python-version $(PYPI_VERSION) --implementation $(PYPI_IMP) --only-binary=:all: --target=./site-packages
+	# Provides mustache templating in construction docs and web UI data
+	cd dist/working && . env/bin/activate && $(PIP) install pystache --target=./site-packages
+	# Provides SVG export in construction documentation
+	cd dist/working && . env/bin/activate && $(PIP) install svgwrite --target=./site-packages
+	# Provides fuzzy date parsing for construction sequencing
+	cd dist/working && . env/bin/activate && $(PIP) install python-dateutil --target=./site-packages
+	# Provides duration parsing for construction sequencing
+	cd dist/working && . env/bin/activate && $(PIP) install isodate --target=./site-packages
+	# Provides networkx graph analysis for project dependency calculations
+	cd dist/working && . env/bin/activate && $(PIP) install networkx --target=./site-packages
+	# Required by IFCDiff
+	cd dist/working && . env/bin/activate && $(PIP) install deepdiff --target=./site-packages
+	# Required by IFCCSV and ifcopenshell.util.selector
+	cd dist/working && . env/bin/activate && $(PIP) install lark --target=./site-packages
+	# Required by IFC4D
+	cd dist/working && . env/bin/activate && $(PIP) install PyP6Xer --target=./site-packages
 	cp -r dist/working/site-packages/* dist/blenderbim/libs/site/packages/
 	rm -rf dist/working

-	# Required by IFCClash
-	mkdir dist/working
-	cd dist/working && wget $(HPPFCL_URL)
-	cd dist/working && unzip hpp-fcl*
-	cd dist/working && tar -I zstd -xvf pkg*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/$(PYLIBDIR)/site-packages/hppfcl dist/blenderbim/libs/site/packages/
-	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/$(PYLIBDIR)/site-packages/hppfcl dist/blenderbim/libs/site/packages/
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/$(PYLIBDIR)/site-packages/hppfcl dist/blenderbim/libs/site/packages/
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Lib/site-packages/hppfcl dist/blenderbim/libs/site/packages/
-	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
-	# Required by hpp-fcl
-	mkdir dist/working
-	cd dist/working && wget $(ASSIMP_URL)
-	cd dist/working && tar -xf assimp*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
-	# Required by hpp-fcl
-	mkdir dist/working
-	cd dist/working && wget $(QHULL_URL)
-	cd dist/working && tar -xf qhull*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
-	# Required by hpp-fcl
-	mkdir dist/working
-	cd dist/working && wget $(EIGENPY_URL)
-	cd dist/working && unzip eigenpy*
-	cd dist/working && tar -I zstd -xvf pkg*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
-	# Required by hpp-fcl
-	mkdir dist/working
-	cd dist/working && wget $(OCTOMAP_URL)
-	cd dist/working && tar -xf octomap*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
-	# Required by hpp-fcl
-	mkdir dist/working
-	cd dist/working && wget $(BOOST_URL)
-	cd dist/working && tar -xf boost*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
-	# Required by hpp-fcl
-	mkdir dist/working
-	cd dist/working && wget $(BOOSTCPP_URL)
-	cd dist/working && unzip boost-cpp*
-	cd dist/working && tar -I zstd -xvf pkg*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/libboost_serialization.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/libboost_serialization.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/libboost_serialization.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Library/bin/boost_serialization.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
-	# Required by hpp-fcl
-	mkdir dist/working
-	cd dist/working && wget $(ZLIB_URL)
-	cd dist/working && tar -xf zlib*
-ifeq ($(PLATFORM), linux)
-	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macos)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), macosm1)
-	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
-endif
-ifeq ($(PLATFORM), win)
-	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
-endif
-	rm -rf dist/working
-
 	# Required by BIMTester
 	mkdir dist/working
 	cd dist/working && wget https://files.pythonhosted.org/packages/c8/4b/d0a8c23b6c8985e5544ea96d27105a273ea22051317f850c2cdbf2029fe4/behave-1.2.6.tar.gz
@@ -604,24 +226,6 @@ endif
 	cd dist/working/ && $(PATCH) ../blenderbim/libs/site/packages/behave/reporter/junit.py < junit.patch
 	rm -rf dist/working

-	# Required by ids - uh, not any more, but I'm trying it out in the drawing module
-ifeq ($(PLATFORM), macosm1)
-	# No wheels available for MacOS M1, but turns out this Anaconda build works
-	mkdir dist/working
-	cd dist/working && wget $(LXML_URL)
-	cd dist/working && tar -xf lxml*
-	cp -r dist/working/lib/$(PYLIBDIR)/site-packages/lxml dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-else
-	# Wheels are preferred for other OSes. A first attempt at using Anaconda
-	# builds for everything shows it breaks on windows. See #2422.
-	mkdir dist/working
-	cd dist/working && wget $(LXML_URL)
-	cd dist/working && cp *.whl lxml.zip && unzip lxml.zip
-	cp -r dist/working/lxml dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-endif
-
 	# Required by behave
 	mkdir dist/working
 	cd dist/working && wget https://files.pythonhosted.org/packages/f4/65/220bb4075fddb09d5b3ea2c1c1fa66c1c72be9361ec187aab50fa161e576/parse-1.15.0.tar.gz
@@ -636,34 +240,6 @@ endif
 	cd dist/working/parse_type-0.5.2/ && cp -r parse_type ../../blenderbim/libs/site/packages/
 	rm -rf dist/working

-	# Required by augin
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/76/b4/b7baffbda025efd5dc8fcd8d2e953e3aa939c236a484084fa8f4c3588ee9/boto3-1.17.17.tar.gz
-	cd dist/working && tar -xzvf boto3*
-	cd dist/working/boto3-1.17.17/ && cp -r boto3 ../../blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by boto3
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/7f/2e/e02fdfd0f0377c4e44e61de27b05d5cfe93575770661ef9ded80ed90fa88/botocore-1.20.17.tar.gz
-	cd dist/working && tar -xzvf botocore*
-	cd dist/working/botocore-1.20.17/ && cp -r botocore ../../blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by boto3
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/3c/56/3f325b1eef9791759784aa5046a8f6a1aff8f7c898a2e34506771d3b99d8/jmespath-0.10.0.tar.gz
-	cd dist/working && tar -xzvf jmespath*
-	cd dist/working/jmespath-0.10.0/ && cp -r jmespath ../../blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by boto3
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/08/e1/3ee2096ebaeeb8c186d20ed16c8faf4a503913e5c9a0e14cd6b8ffc405a3/s3transfer-0.3.4.tar.gz
-	cd dist/working && tar -xzvf s3transfer*
-	cd dist/working/s3transfer-0.3.4/ && cp -r s3transfer ../../blenderbim/libs/site/packages/
-	rm -rf dist/working
-
 	# Provides IFCJSON functionality
 	mkdir dist/working
 	cd dist/working && wget https://github.com/IFCJSON-Team/IFC2JSON_python/archive/master.zip
@@ -681,7 +257,7 @@ endif
 	# Required by brickschema
 	# This is a bit of a dodgy one, it should be provided by setuptools which Blender doesn't ship.
 	mkdir dist/working
-	cd dist/working && wget https://blenderbim.org/builds/pkg_resources.tar.gz
+	cd dist/working && wget https://github.com/IfcOpenShell/IfcOpenShell/raw/v0.7.0/src/blenderbim/scripts/pkg_resources.tar.gz
 	cd dist/working && tar -xzvf pkg_resources*
 	cd dist/working/ && cp -r pkg_resources ../blenderbim/libs/site/packages/
 	rm -rf dist/working
@@ -696,9 +272,9 @@ endif
 	# Required for Desktop icon and file association
 	cp -r blenderbim/libs/desktop dist/blenderbim/libs/

-	# generate translations module for BBIM build
+	# Generate translations module for BBIM build
 	git clone https://github.com/IfcOpenShell/blenderbim-translations.git dist/working
-	python scripts/bbim_translations.py -i "dist/working" -o "dist/blenderbim"
+	$(PYTHON) scripts/bbim_translations.py -i "dist/working" -o "dist/blenderbim"
 	rm -rf dist/working

 	# Remove dependencies also bundled with Blender
@@ -706,6 +282,7 @@ endif
 	rm -rf dist/blenderbim/libs/site/packages/numpy.libs

 	cd dist/blenderbim && $(SED) "s/999999/$(VERSION)/" __init__.py
+	cd dist/blenderbim && $(SED) "s/999999/$(VERSION)/" blender_manifest.toml
 	cd dist/blenderbim/bim && $(SED) "s/8888888/$(LAST_COMMIT_HASH)/" __init__.py
 	cd dist && zip -r blenderbim-$(VERSION)-$(PYVERSION)-$(PLATFORM).zip ./*
 	rm -rf dist/blenderbim
@@ -18,7 +18,21 @@

 import os
 import sys
-import site
+
+# Ensure we don't try to import bpy or blenderbim.bim
+# to support running core tests.
+# We assume if bpy was never loaded in current python session
+# then we're not in Blender. It's still possible to use
+# bpy in core and core tests for annotations using TYPE_CHECKING.
+IN_BLENDER = sys.modules.get("bpy", None)
+if IN_BLENDER:
+    import bpy
+import platform
+import traceback
+import subprocess
+import webbrowser
+import addon_utils
+from collections import deque

 bl_info = {
    "name": "BlenderBIM",
@@ -27,21 +41,168 @@ bl_info = {
    "blender": (3, 1, 0),
    "version": (0, 0, 999999),
    "location": "File Menu, Scene Properties Tab. See documentation for more.",
-    "doc_url": "https://blenderbim.org/docs",
+    "doc_url": "https://docs.blenderbim.org/",
    "tracker_url": "https://github.com/IfcOpenShell/IfcOpenShell/issues",
    "category": "System",
 }

-if sys.modules.get("bpy", None):
+last_error = None
+last_actions: deque = deque(maxlen=10)
+
+
+def get_debug_info():
+    version = ".".join(
+        [
+            str(x)
+            for x in [
+                addon.bl_info.get("version", (-1, -1, -1))
+                for addon in addon_utils.modules()
+                if addon.bl_info["name"] == "BlenderBIM"
+            ][0]
+        ]
+    )
+    return {
+        "os": platform.system(),
+        "os_version": platform.version(),
+        "python_version": platform.python_version(),
+        "architecture": platform.architecture(),
+        "machine": platform.machine(),
+        "processor": platform.processor(),
+        "blender_version": bpy.app.version_string,
+        "blenderbim_version": version,
+        "last_actions": last_actions,
+        "last_error": last_error,
+    }
+
+
+def format_debug_info(info: dict):
+    last_actions = ""
+    for action in info["last_actions"]:
+        last_actions += f"\n# {action['type']}: {action['name']}"
+        if settings := action.get("settings"):
+            last_actions += f"\n>>> {settings}"
+    info["last_actions"] = last_actions
+    text = "\n".join(f"{k}: {v}" for k, v in info.items())
+    return text.strip()
+
+
+if IN_BLENDER:
    # Process *.pth in /libs/site/packages to setup globally importable modules
    # This is 3 levels deep as required by the static RPATH of ../../ from dependencies taken from Anaconda
    # site.addsitedir(os.path.join(os.path.dirname(os.path.realpath(__file__)), "libs", "site", "packages"))
    sys.path.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), "libs", "site", "packages"))

-    import blenderbim.bim
+    try:
+        import blenderbim.bim
+        import ifcopenshell.api

-    def register():
-        blenderbim.bim.register()
+        def log_api(usecase_path, ifc_file, settings):
+            last_actions.append(
+                {
+                    "type": "ifcopenshell.api",
+                    "name": usecase_path,
+                    "settings": ifcopenshell.api.serialise_settings(settings),
+                }
+            )

-    def unregister():
-        blenderbim.bim.unregister()
+        ifcopenshell.api.add_pre_listener("*", "action_logger", log_api)
+
+        def register():
+            blenderbim.bim.register()
+
+        def unregister():
+            blenderbim.bim.unregister()
+
+    except:
+        last_error = traceback.format_exc()
+
+        print(last_error)
+        print(format_debug_info(get_debug_info()))
+        print("\nFATAL ERROR: Unable to load the BlenderBIM Add-on")
+
+        class BIM_PT_fatal_error(bpy.types.Panel):
+            bl_label = "BlenderBIM Fatal Error"
+            bl_idname = "SCENE_PT_error_message"
+            bl_space_type = "PROPERTIES"
+            bl_region_type = "WINDOW"
+            bl_context = "scene"
+
+            def draw(self, context):
+                info = get_debug_info()
+
+                layout = self.layout
+                layout.alert = True
+                layout.label(text="BlenderBIM could not load.", icon="ERROR")
+                if info["os"] == "Windows":
+                    layout.operator("wm.console_toggle", text="View the console for full logs.", icon="CONSOLE")
+                else:
+                    layout.label(text="View the console for full logs.", icon="CONSOLE")
+                box = layout.box()
+                py = ".".join(info["python_version"].split(".")[0:2])
+                b3d = ".".join(info["blender_version"].split(".")[0:2])
+                box.label(text=f"Blender {b3d} {info['os']} {info['machine']}", icon="BLENDER")
+                box.label(text=f"Python {py} BBIM {info['blenderbim_version']}", icon="SCRIPTPLUGINS")
+                layout.operator("bim.copy_debug_information", text="Copy Error Message To Clipboard")
+                op = layout.operator("bim.open_uri", text="How Can I Fix This?")
+                op.uri = "https://docs.blenderbim.org/users/troubleshooting.html#installation-issues"
+
+                layout.label(text="Try Reinstalling:", icon="IMPORT")
+                op = layout.operator("bim.open_uri", text="Re-download Add-on")
+                bbim_date = info["blenderbim_version"].split(".")[-1]
+                py_tag = py.replace(".", "")
+                if "Linux" in info["os"]:
+                    os = "linux"
+                elif "Darwin" in info["os"]:
+                    if "arm64" in info["machine"]:
+                        os = "macosm1"
+                    else:
+                        os = "macos"
+                else:
+                    os = "win"
+                op.uri = f"https://github.com/IfcOpenShell/IfcOpenShell/releases/download/blenderbim-{bbim_date}/blenderbim-{bbim_date}-py{py_tag}-{os}.zip"
+
+        class OpenUri(bpy.types.Operator):
+            bl_idname = "bim.open_uri"
+            bl_label = "Open URI"
+            uri: bpy.props.StringProperty()
+
+            def execute(self, context):
+                webbrowser.open(self.uri)
+                return {"FINISHED"}
+
+        class CopyDebugInformation(bpy.types.Operator):
+            bl_idname = "bim.copy_debug_information"
+            bl_label = "Copy Debug Information"
+            bl_description = "Copies debugging information to your clipboard for use in bugreports"
+
+            def execute(self, context):
+                info = format_debug_info(get_debug_info())
+                context.window_manager.clipboard = info
+                return {"FINISHED"}
+
+        class HiddenPanel:
+            @classmethod
+            def false_poll(cls, context):
+                return False
+
+        def register():
+            # Only show our error panel and nothing else in the scene tab
+            for item_name in dir(bpy.types):
+                item = getattr(bpy.types, item_name)
+                if not hasattr(item, "bl_rna") or not isinstance(item.bl_rna, bpy.types.Panel):
+                    continue
+                if getattr(item, "bl_context", None) != "scene":
+                    continue
+
+                # Reregister scene panel with a new poll to hide it
+                item.poll = HiddenPanel.false_poll
+                bpy.utils.unregister_class(item)
+                bpy.utils.register_class(item)
+            bpy.utils.register_class(BIM_PT_fatal_error)
+            bpy.utils.register_class(CopyDebugInformation)
+            bpy.utils.register_class(OpenUri)
+
+        def unregister():
+            bpy.utils.unregister_class(OpenUri)
+            bpy.utils.unregister_class(CopyDebugInformation)
+            bpy.utils.unregister_class(BIM_PT_fatal_error)
@@ -17,12 +17,13 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

 import os
-from pathlib import Path
 import bpy
 import bpy.utils.previews
 import blenderbim
 import importlib
+from pathlib import Path
 from . import handler, ui, prop, operator, helper
+from typing import Callable, Union

 try:
    from blenderbim.translations import translations_dict
@@ -96,9 +97,13 @@ for name in modules.keys():
 classes = [
    operator.AddIfcFile,
    operator.BIM_OT_add_section_plane,
+    operator.BIM_OT_delete_object,
    operator.BIM_OT_open_webbrowser,
    operator.BIM_OT_remove_section_plane,
+    operator.BIM_OT_select_object,
    operator.BIM_OT_show_description,
+    operator.ClippingPlaneCutWithCappings,
+    operator.CloseError,
    operator.EditBlenderCollection,
    operator.FileAssociate,
    operator.FileUnassociate,
@@ -106,6 +111,7 @@ classes = [
    operator.OpenUri,
    operator.ReloadIfcFile,
    operator.RemoveIfcFile,
+    operator.RevertClippingPlaneCut,
    operator.SelectDataDir,
    operator.SelectIfcFile,
    operator.SelectSchemaDir,
@@ -128,6 +134,7 @@ classes = [
    prop.BIMMeshProperties,
    prop.BIMFacet,
    prop.BIMFilterGroup,
+    ui.BIM_UL_clipping_plane,
    ui.BIM_UL_generic,
    ui.BIM_UL_topics,
    ui.BIM_ADDON_preferences,
@@ -135,6 +142,7 @@ classes = [
    ui.BIM_PT_tabs,
    # Project overview
    ui.BIM_PT_tab_project_info,
+    ui.BIM_PT_tab_spatial_decomposition,
    ui.BIM_PT_tab_project_setup,
    ui.BIM_PT_tab_geometry,
    ui.BIM_PT_tab_stakeholders,
@@ -147,9 +155,10 @@ classes = [
    ui.BIM_PT_tab_representations,
    ui.BIM_PT_tab_geometric_relationships,
    ui.BIM_PT_tab_parametric_geometry,
-    ui.BIM_PT_tab_profiles,
+    ui.BIM_PT_tab_object_materials,
    ui.BIM_PT_tab_materials,
    ui.BIM_PT_tab_styles,
+    ui.BIM_PT_tab_profiles,
    # Drawings and documents
    ui.BIM_PT_tab_sheets,
    ui.BIM_PT_tab_drawings,
@@ -162,6 +171,7 @@ classes = [
    ui.BIM_PT_tab_structural,
    # Construction scheduling
    ui.BIM_PT_tab_status,
+    ui.BIM_PT_tab_qto,
    ui.BIM_PT_tab_resources,
    ui.BIM_PT_tab_cost,
    ui.BIM_PT_tab_sequence,
@@ -175,6 +185,7 @@ classes = [
    ui.BIM_PT_tab_sandbox,
    # TODO: move this somewhere else and clean it up
    ui.BIM_PT_section_plane,
+    ui.BIM_PT_section_with_cappings,
 ]

 for mod in modules.values():
@@ -184,7 +195,7 @@ addon_keymaps = []
 icons = None
 is_registering = False
 last_commit_hash = "8888888"
-overridden_scene_panels = dict()
+original_scene_panels_polls: dict[bpy.types.Panel, Union[Callable, None]] = dict()


 def on_register(scene):
@@ -292,10 +303,10 @@ def unregister():
            km.keymap_items.remove(kmi)
    addon_keymaps.clear()

-    for panel in tuple(overridden_scene_panels.keys()):
-        original_panel, override_panel = overridden_scene_panels[panel]
-        bpy.utils.unregister_class(override_panel)
-        bpy.utils.register_class(original_panel)
-        del overridden_scene_panels[panel]
+    import blenderbim.tool as tool
+
+    # use tuple() as method will be removing keys from dict
+    for panel in tuple(original_scene_panels_polls.keys()):
+        tool.Blender.remove_scene_panel_override(panel)

    bpy.app.translations.unregister("blenderbim")
@@ -10,7 +10,7 @@
 * (at your option) any later version.
 *
 * BlenderBIM Add-on is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * but WITHOUT ANY WARRANTY, without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
@@ -10,7 +10,7 @@
 * (at your option) any later version.
 *
 * BlenderBIM Add-on is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * but WITHOUT ANY WARRANTY, without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
@@ -0,0 +1,45 @@
+/*
+ * BlenderBIM Add-on - OpenBIM Blender Add-on
+ * Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+ *
+ * This file is part of BlenderBIM Add-on.
+ *
+ * BlenderBIM Add-on is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BlenderBIM Add-on is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * You may copy this `schedule.css` template alongside your input schedule
+ * document with the same filename. For example if you have a schedule called
+ * `door_types.ods`, you can create a `door_types.css` in the same folder to
+ * style that schedule.
+ */
+
+/**
+ * If you specify a font size in CSS, such as text { font-size: 5; }, all fonts
+ * will be overriden to match that size.
+ *
+ * If your CSS, ODS, XLSX does not specify a font size, the variables below
+ * will specify the default font size.
+ *
+ * If your ODS, XLSX does specify a font size, they will scale linearly based
+ * on the variables below.
+ */
+
+:root {
+    --font-size-pt: 12;
+    --font-size-px: 4.13;
+    --font-width: 0.45;
+}
+
+text, tspan { /* 2.5mm */ fill: black; stroke: none; font-family: 'OpenGost Type B TT', 'DejaVu Sans Condensed', 'Liberation Sans', 'Arial Narrow', 'Arial'; }
@@ -1,17 +1,17 @@
 ISO-10303-21;
 HEADER;
 FILE_DESCRIPTION(('ViewDefinition[DesignTransferView]'),'2;1');
-FILE_NAME('/dev/null','2023-09-07T13:40:06+10:00',(),(),'IfcOpenShell v0.7.0-fbd8ea1ed','IfcOpenShell v0.7.0-fbd8ea1ed','Nobody');
+FILE_NAME('/dev/null','2024-03-03T16:03:58+11:00',(),(),'IfcOpenShell v0.7.0-eaa2aa05a','IfcOpenShell v0.7.0-eaa2aa05a','Nobody');
 FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
-#1=IFCPROJECT('1arVsMni92iPUaaryGTUz2',$,'BlenderBIM Demo',$,$,$,$,(#12,#16),#7);
-#2=IFCPROJECTLIBRARY('1FfDG5b21DuBDOO4eUE9rF',$,'BlenderBIM Demo Library',$,$,$,$,$,$);
-#3=IFCRELDECLARES('3tfDIC3Tf9wP8EUOoFeycK',$,$,$,#1,(#2));
+#1=IFCPROJECT('3NJUxHyTzEv96oezyDYEqf',$,'BlenderBIM Demo',$,$,$,$,(#12,#16),#7);
+#2=IFCPROJECTLIBRARY('0D39k7hbT5ce$jWaCd2niG',$,'BlenderBIM Demo Library',$,$,$,$,$,$);
+#3=IFCRELDECLARES('2RWVohyP57PBHT9zCs4H2O',$,$,$,#1,(#2));
 #4=IFCSIUNIT(*,.LENGTHUNIT.,$,.METRE.);
 #5=IFCSIUNIT(*,.AREAUNIT.,$,.SQUARE_METRE.);
 #6=IFCSIUNIT(*,.VOLUMEUNIT.,$,.CUBIC_METRE.);
-#7=IFCUNITASSIGNMENT((#5,#6,#4));
+#7=IFCUNITASSIGNMENT((#6,#4,#5));
 #8=IFCCARTESIANPOINT((0.,0.,0.));
 #9=IFCDIRECTION((0.,0.,1.));
 #10=IFCDIRECTION((1.,0.,0.));
@@ -23,84 +23,84 @@ DATA;
 #16=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Plan',2,1.E-05,#15,$);
 #17=IFCGEOMETRICREPRESENTATIONSUBCONTEXT('Body','Model',*,*,*,*,#12,$,.MODEL_VIEW.,$);
 #18=IFCGEOMETRICREPRESENTATIONSUBCONTEXT('Body','Plan',*,*,*,*,#16,$,.PLAN_VIEW.,$);
-#19=IFCGEOMETRICREPRESENTATIONSUBCONTEXT('Annotation','Plan',*,*,*,*,#16,$,.PLAN_VIEW.,$);
+#19=IFCGEOMETRICREPRESENTATIONSUBCONTEXT('Annotation','Model',*,*,*,*,#16,$,.MODEL_VIEW.,$);
 #20=IFCMATERIAL('Unknown',$,$);
-#21=IFCWALLTYPE('2o8NqQQbHA5BeErrgwfr7d',$,'WAL50',$,$,$,$,$,$,.NOTDEFINED.);
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+#23=IFCRELASSOCIATESMATERIAL('0khP_Smdj12f2JrOTRbRKj',$,$,$,(#21),#22);
 #24=IFCMATERIALLAYER(#20,0.05,$,$,$,$,$);
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 #31=IFCMATERIALLAYERSET((#33),$,$);
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 #35=IFCMATERIALLAYERSET((#37),$,$);
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-#52=IFCPROPERTYSET('0HnrRhcd16Yfbgtci4sqCG',$,'EPset_Parametric',$,(#53));
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+#77=IFCCOLUMNTYPE('3aSZOvGmr7jggSNwsq5PJE',$,'C2',$,$,$,$,$,$,.NOTDEFINED.);
 #78=IFCMATERIALPROFILESET($,$,(#80),$);
-#79=IFCRELASSOCIATESMATERIAL('3czOrQw2v9BfS0PeQCrzWq',$,$,$,(#77),#78);
+#79=IFCRELASSOCIATESMATERIAL('1AtNJPaD14DgINbAjXvbU4',$,$,$,(#77),#78);
 #80=IFCMATERIALPROFILE($,$,#20,#76,$,$);
 #81=IFCRECTANGLEHOLLOWPROFILEDEF(.AREA.,'150x75x2.0 RHS',$,0.075,0.15,0.002,0.005,0.005);
-#82=IFCCOLUMNTYPE('21YcNdKNj2$95U55yNx1Nw',$,'C3',$,$,$,$,$,$,.NOTDEFINED.);
+#82=IFCCOLUMNTYPE('28iv3Kru12yQ7R7RRwNjvD',$,'C3',$,$,$,$,$,$,.NOTDEFINED.);
 #83=IFCMATERIALPROFILESET($,$,(#85),$);
-#84=IFCRELASSOCIATESMATERIAL('3n6Cru3xr6jvDptU9u7QEF',$,$,$,(#82),#83);
+#84=IFCRELASSOCIATESMATERIAL('2M_oL$n3j6rBRnOW5RSk87',$,$,$,(#82),#83);
 #85=IFCMATERIALPROFILE($,$,#20,#81,$,$);
 #86=IFCISHAPEPROFILEDEF(.AREA.,'DEMO-I',$,0.1,0.2,0.005,0.01,0.005,$,$);
-#87=IFCBEAMTYPE('2CsGpD$6nDCxWv9jXTtvq9',$,'B1',$,$,$,$,$,$,.NOTDEFINED.);
+#87=IFCBEAMTYPE('2E$V5l4b54dxuToJ1A6IHp',$,'B1',$,$,$,$,$,$,.NOTDEFINED.);
 #88=IFCMATERIALPROFILESET($,$,(#90),$);
-#89=IFCRELASSOCIATESMATERIAL('2LJExc74j9rgBSBx51HDPK',$,$,$,(#87),#88);
+#89=IFCRELASSOCIATESMATERIAL('3PUNnY7cj8LhyXbHKVqZnf',$,$,$,(#87),#88);
 #90=IFCMATERIALPROFILE($,$,#20,#86,$,$);
 #91=IFCCSHAPEPROFILEDEF(.AREA.,'DEMO-C',$,0.2,0.1,0.0015,0.03,0.005);
-#92=IFCBEAMTYPE('32pHN2b0P0awGw$U8PpneO',$,'B2',$,$,$,$,$,$,.NOTDEFINED.);
+#92=IFCBEAMTYPE('3qutoZTvP0lvLWNXyjPhPm',$,'B2',$,$,$,$,$,$,.NOTDEFINED.);
 #93=IFCMATERIALPROFILESET($,$,(#95),$);
-#94=IFCRELASSOCIATESMATERIAL('2wg8R1Drb2xhQ2Y_pRSh3c',$,$,$,(#92),#93);
+#94=IFCRELASSOCIATESMATERIAL('3dGyQf42H2ahch2bSYPPHP',$,$,$,(#92),#93);
 #95=IFCMATERIALPROFILE($,$,#20,#91,$,$);
-#96=IFCWINDOWTYPE('1Gg9HfZEr69u8SdWfDs2J3',$,'WT01',$,$,$,(#135,#152),$,$,.NOTDEFINED.,.NOTDEFINED.,$,$);
+#96=IFCWINDOWTYPE('0bK3c4PWL3eOMNwkPN$rlg',$,'WT01',$,$,$,(#135,#152),$,$,.NOTDEFINED.,.NOTDEFINED.,$,$);
 #97=IFCINDEXEDPOLYGONALFACE((13,17,18,14));
 #98=IFCINDEXEDPOLYGONALFACE((5,6,3,4));
 #99=IFCINDEXEDPOLYGONALFACE((7,8,2,1));
@@ -157,7 +157,7 @@ DATA;
 #150=IFCDIRECTION((0.,0.,1.));
 #151=IFCAXIS2PLACEMENT3D(#148,#150,#149);
 #152=IFCREPRESENTATIONMAP(#151,#147);
-#153=IFCDOORTYPE('0NBUmPKyT9WecsIeYJrEqg',$,'DT01',$,$,$,(#196,#209),$,$,.NOTDEFINED.,.NOTDEFINED.,$,$);
+#153=IFCDOORTYPE('2j0vIBgkH0ERnBCP0cpcCz',$,'DT01',$,$,$,(#196,#209),$,$,.NOTDEFINED.,.NOTDEFINED.,$,$);
 #154=IFCINDEXEDPOLYGONALFACE((17,16,15,14));
 #155=IFCINDEXEDPOLYGONALFACE((2,3,29,28));
 #156=IFCINDEXEDPOLYGONALFACE((27,28,29,30,32,31));
@@ -214,7 +214,7 @@ DATA;
 #207=IFCDIRECTION((0.,0.,1.));
 #208=IFCAXIS2PLACEMENT3D(#205,#207,#206);
 #209=IFCREPRESENTATIONMAP(#208,#204);
-#210=IFCFURNITURETYPE('3Kyc6IyarAUw3_8fkNtXIg',$,'BUN01',$,$,$,(#931,#952),$,$,.NOTDEFINED.,.NOTDEFINED.);
+#210=IFCFURNITURETYPE('02XxQ_3oT0SPrmFPATrt7o',$,'BUN01',$,$,$,(#931,#952),$,$,.NOTDEFINED.,.NOTDEFINED.);
 #211=IFCINDEXEDPOLYGONALFACE((187,278,44));
 #212=IFCINDEXEDPOLYGONALFACE((21,52,60));
 #213=IFCINDEXEDPOLYGONALFACE((91,100,31));
@@ -957,35 +957,35 @@ DATA;
 #950=IFCDIRECTION((0.,0.,1.));
 #951=IFCAXIS2PLACEMENT3D(#948,#950,#949);
 #952=IFCREPRESENTATIONMAP(#951,#947);
-#953=IFCTYPEPRODUCT('0TBMBnD_b66QLUWKD9HLsc',$,'SETOUT-POINT',$,'IfcAnnotation/SYMBOL',(#954),$,$);
-#954=IFCPROPERTYSET('2dQzX_K4r1Xet6dz9zBlgs',$,'EPset_Annotation',$,(#955));
+#953=IFCTYPEPRODUCT('0UrP0fLdD5OwzwD41aRKao',$,'SETOUT-POINT',$,'IfcAnnotation/SYMBOL',(#954),$,$);
+#954=IFCPROPERTYSET('27lmSbeAXC08EWkEq8XdUG',$,'EPset_Annotation',$,(#955));
 #955=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('setout-point'),$);
-#956=IFCTYPEPRODUCT('0vo_7PU3H9ygTnrIipqPRI',$,'CONTROL-POINT',$,'IfcAnnotation/SYMBOL',(#957),$,$);
-#957=IFCPROPERTYSET('3APQOw$FP1ivxp08UxHsl6',$,'EPset_Annotation',$,(#958));
+#956=IFCTYPEPRODUCT('3IQrQOSFP0WfkuLk0ak7_0',$,'CONTROL-POINT',$,'IfcAnnotation/SYMBOL',(#957),$,$);
+#957=IFCPROPERTYSET('23aN9DsdjFcfWq8KGSIVoN',$,'EPset_Annotation',$,(#958));
 #958=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('control-point'),$);
-#959=IFCTYPEPRODUCT('32V27G3$T1OO3TbXg6948F',$,'TRAVERSE-POINT',$,'IfcAnnotation/SYMBOL',(#960),$,$);
-#960=IFCPROPERTYSET('0cTSYXMc9B$PTXVDrhBYYW',$,'EPset_Annotation',$,(#961));
+#959=IFCTYPEPRODUCT('3wvbaiaIz8agQgDRzt01vz',$,'TRAVERSE-POINT',$,'IfcAnnotation/SYMBOL',(#960),$,$);
+#960=IFCPROPERTYSET('1j7aFM1Rb9BRuKgUEn1U10',$,'EPset_Annotation',$,(#961));
 #961=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('traverse-point'),$);
-#962=IFCTYPEPRODUCT('2PXIC7Bg914gJhRh2XeGnN',$,'DASHED',$,'IfcAnnotation/LINEWORK',(#963),$,$);
-#963=IFCPROPERTYSET('0RiYsOxp529gXnCkw44wF8',$,'EPset_Annotation',$,(#964));
+#962=IFCTYPEPRODUCT('0p5ZTfTnX9ZOywroa7Ffql',$,'DASHED',$,'IfcAnnotation/LINEWORK',(#963),$,$);
+#963=IFCPROPERTYSET('27smSHyiv39vhBRSwfDVCD',$,'EPset_Annotation',$,(#964));
 #964=IFCPROPERTYSINGLEVALUE('Classes',$,IFCLABEL('dashed'),$);
-#965=IFCTYPEPRODUCT('1Ou1kA3Vb4HhuNBvM0uGe0',$,'FINE',$,'IfcAnnotation/LINEWORK',(#966),$,$);
-#966=IFCPROPERTYSET('2gzly9D0L1qPK2MExeXgRO',$,'EPset_Annotation',$,(#967));
+#965=IFCTYPEPRODUCT('2EvrG9Vuf6t9etgMeWFuJ2',$,'FINE',$,'IfcAnnotation/LINEWORK',(#966),$,$);
+#966=IFCPROPERTYSET('0gVTuDcZ5ByRdR3sZnEZUR',$,'EPset_Annotation',$,(#967));
 #967=IFCPROPERTYSINGLEVALUE('Classes',$,IFCLABEL('fine'),$);
-#968=IFCTYPEPRODUCT('3lx$KQPRbEZwbQ7Xdfm5gw',$,'THIN',$,'IfcAnnotation/LINEWORK',(#969),$,$);
-#969=IFCPROPERTYSET('0vsVpqs6zArvA2bfBtvQew',$,'EPset_Annotation',$,(#970));
+#968=IFCTYPEPRODUCT('0IeM1ywXn1qhR_6NhB6N4s',$,'THIN',$,'IfcAnnotation/LINEWORK',(#969),$,$);
+#969=IFCPROPERTYSET('0t6c$uCeT9092GYkbm8hDS',$,'EPset_Annotation',$,(#970));
 #970=IFCPROPERTYSINGLEVALUE('Classes',$,IFCLABEL('thin'),$);
-#971=IFCTYPEPRODUCT('00j$y97p903w2HOb35lAQ2',$,'MEDIUM',$,'IfcAnnotation/LINEWORK',(#972),$,$);
-#972=IFCPROPERTYSET('240rEBDOn8PAvfnm_43s55',$,'EPset_Annotation',$,(#973));
+#971=IFCTYPEPRODUCT('1jZVbCwrTCGhZdKbH4uqTP',$,'MEDIUM',$,'IfcAnnotation/LINEWORK',(#972),$,$);
+#972=IFCPROPERTYSET('2uTJ11lF98GeN8pPIf340N',$,'EPset_Annotation',$,(#973));
 #973=IFCPROPERTYSINGLEVALUE('Classes',$,IFCLABEL('medium'),$);
-#974=IFCTYPEPRODUCT('2tVdFGorj6dfrL4uA1kyW8',$,'THICK',$,'IfcAnnotation/LINEWORK',(#975),$,$);
-#975=IFCPROPERTYSET('2IEGHncr1D$R8fKA9zCEJP',$,'EPset_Annotation',$,(#976));
+#974=IFCTYPEPRODUCT('38zW9E1uH2ae$zat9KrieS',$,'THICK',$,'IfcAnnotation/LINEWORK',(#975),$,$);
+#975=IFCPROPERTYSET('2XQxgO16v9vxjvuIJpaPpG',$,'EPset_Annotation',$,(#976));
 #976=IFCPROPERTYSINGLEVALUE('Classes',$,IFCLABEL('thick'),$);
-#977=IFCTYPEPRODUCT('1T5C$$ONTBB8A9a7vv0Gn6',$,'STRONG',$,'IfcAnnotation/LINEWORK',(#978),$,$);
-#978=IFCPROPERTYSET('1gRomAS1L2WguA51ZI0E40',$,'EPset_Annotation',$,(#979));
+#977=IFCTYPEPRODUCT('3G2s7ZLzfDJh5J$2iIzHw9',$,'STRONG',$,'IfcAnnotation/LINEWORK',(#978),$,$);
+#978=IFCPROPERTYSET('0TcB8Gal96vebTrLWa5CEw',$,'EPset_Annotation',$,(#979));
 #979=IFCPROPERTYSINGLEVALUE('Classes',$,IFCLABEL('strong'),$);
-#980=IFCTYPEPRODUCT('2LmKYrAEr2K8EwJyCAsyc4',$,'SETOUT-TAG',$,'IfcAnnotation/TEXT',(#981),(#1000),$);
-#981=IFCPROPERTYSET('0nF9du8qDAF9aldqjCUsbX',$,'EPset_Annotation',$,(#982));
+#980=IFCTYPEPRODUCT('3pq2B$0k52ZOv2bFuRYkxO',$,'SETOUT-TAG',$,'IfcAnnotation/TEXT',(#981),(#1000),$);
+#981=IFCPROPERTYSET('39$oNFI052cBhtpZCVVLfj',$,'EPset_Annotation',$,(#982));
 #982=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('setout-tag'),$);
 #983=IFCCARTESIANPOINT((0.,0.,0.));
 #984=IFCDIRECTION((0.,0.,1.));
@@ -1005,8 +1005,8 @@ DATA;
 #998=IFCDIRECTION((0.,0.,1.));
 #999=IFCAXIS2PLACEMENT3D(#996,#998,#997);
 #1000=IFCREPRESENTATIONMAP(#999,#995);
-#1001=IFCTYPEPRODUCT('1cdhVmqEPF6e13_TFOdlQw',$,'DOOR-TAG',$,'IfcAnnotation/TEXT',(#1002),(#1021),$);
-#1002=IFCPROPERTYSET('1MUPGQolnDEgp0NxcMN56E',$,'EPset_Annotation',$,(#1003));
+#1001=IFCTYPEPRODUCT('11M3ahhrr9NBdB29YEazzw',$,'DOOR-TAG',$,'IfcAnnotation/TEXT',(#1002),(#1021),$);
+#1002=IFCPROPERTYSET('3xUNoLKPT9kB4LMdoctm5k',$,'EPset_Annotation',$,(#1003));
 #1003=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('door-tag'),$);
 #1004=IFCCARTESIANPOINT((0.,0.,0.));
 #1005=IFCDIRECTION((0.,0.,1.));
@@ -1026,8 +1026,8 @@ DATA;
 #1019=IFCDIRECTION((0.,0.,1.));
 #1020=IFCAXIS2PLACEMENT3D(#1017,#1019,#1018);
 #1021=IFCREPRESENTATIONMAP(#1020,#1016);
-#1022=IFCTYPEPRODUCT('0OuDi3gRH2CxW9mrtE0vXw',$,'WINDOW-TAG',$,'IfcAnnotation/TEXT',(#1023),(#1036),$);
-#1023=IFCPROPERTYSET('2X7dAo_1P5ruRnlKA4kIl6',$,'EPset_Annotation',$,(#1024));
+#1022=IFCTYPEPRODUCT('1eE8Y$BVDFDgG8Fj6d9wiV',$,'WINDOW-TAG',$,'IfcAnnotation/TEXT',(#1023),(#1036),$);
+#1023=IFCPROPERTYSET('2MqzSGkXDBcPSolaAQvYO4',$,'EPset_Annotation',$,(#1024));
 #1024=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('window-tag'),$);
 #1025=IFCCARTESIANPOINT((0.,0.,0.));
 #1026=IFCDIRECTION((0.,0.,1.));
@@ -1041,8 +1041,8 @@ DATA;
 #1034=IFCDIRECTION((0.,0.,1.));
 #1035=IFCAXIS2PLACEMENT3D(#1032,#1034,#1033);
 #1036=IFCREPRESENTATIONMAP(#1035,#1031);
-#1037=IFCTYPEPRODUCT('3WEV_9wQn6AQTESgjW36PH',$,'SPACE-TAG',$,'IfcAnnotation/TEXT',(#1038),(#1063),$);
-#1038=IFCPROPERTYSET('02FAX8dIzAlunWD5ak$6sU',$,'EPset_Annotation',$,(#1039));
+#1037=IFCTYPEPRODUCT('0vvfHSiaPBxewA$32C4LdW',$,'SPACE-TAG',$,'IfcAnnotation/TEXT',(#1038),(#1063),$);
+#1038=IFCPROPERTYSET('2zKuFdTPj3DhNdQ0U2kd5u',$,'EPset_Annotation',$,(#1039));
 #1039=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('space-tag'),$);
 #1040=IFCCARTESIANPOINT((0.,0.,0.));
 #1041=IFCDIRECTION((0.,0.,1.));
@@ -1068,8 +1068,8 @@ DATA;
 #1061=IFCDIRECTION((0.,0.,1.));
 #1062=IFCAXIS2PLACEMENT3D(#1059,#1061,#1060);
 #1063=IFCREPRESENTATIONMAP(#1062,#1058);
-#1064=IFCTYPEPRODUCT('1evqvQLLL1zxdsIWqEn0lK',$,'MATERIAL-TAG',$,'IfcAnnotation/TEXT',(#1065),(#1078),$);
-#1065=IFCPROPERTYSET('2KPJlGyer0UBmphfR7952k',$,'EPset_Annotation',$,(#1066));
+#1064=IFCTYPEPRODUCT('36lTcd9yT8UBNDejQUNWrq',$,'MATERIAL-TAG',$,'IfcAnnotation/TEXT',(#1065),(#1078),$);
+#1065=IFCPROPERTYSET('1x86VNVk1Drwe5XOj$GZX3',$,'EPset_Annotation',$,(#1066));
 #1066=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('rectangle-tag'),$);
 #1067=IFCCARTESIANPOINT((0.,0.,0.));
 #1068=IFCDIRECTION((0.,0.,1.));
@@ -1083,8 +1083,8 @@ DATA;
 #1076=IFCDIRECTION((0.,0.,1.));
 #1077=IFCAXIS2PLACEMENT3D(#1074,#1076,#1075);
 #1078=IFCREPRESENTATIONMAP(#1077,#1073);
-#1079=IFCTYPEPRODUCT('3Nem6d4xX87O3deyWDi3AW',$,'TYPE-TAG',$,'IfcAnnotation/TEXT',(#1080),(#1093),$);
-#1080=IFCPROPERTYSET('15bspgnA9CEuFox6xFjoTL',$,'EPset_Annotation',$,(#1081));
+#1079=IFCTYPEPRODUCT('1rxhEX6I16oPqglXaGZ7Sw',$,'TYPE-TAG',$,'IfcAnnotation/TEXT',(#1080),(#1093),$);
+#1080=IFCPROPERTYSET('3BeqEbDzX0xORamqqSx_kZ',$,'EPset_Annotation',$,(#1081));
 #1081=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('capsule-tag'),$);
 #1082=IFCCARTESIANPOINT((0.,0.,0.));
 #1083=IFCDIRECTION((0.,0.,1.));
@@ -1098,8 +1098,8 @@ DATA;
 #1091=IFCDIRECTION((0.,0.,1.));
 #1092=IFCAXIS2PLACEMENT3D(#1089,#1091,#1090);
 #1093=IFCREPRESENTATIONMAP(#1092,#1088);
-#1094=IFCTYPEPRODUCT('0klFX9AjnEnPBkdIURv8XD',$,'NAME-TAG',$,'IfcAnnotation/TEXT',(#1095),(#1108),$);
-#1095=IFCPROPERTYSET('1d53tifbv2rwcoFFJosiHf',$,'EPset_Annotation',$,(#1096));
+#1094=IFCTYPEPRODUCT('0sws1hxNb2Og1etXqyoEh1',$,'NAME-TAG',$,'IfcAnnotation/TEXT',(#1095),(#1108),$);
+#1095=IFCPROPERTYSET('11L$PtdnX8LfYigzRZ$g0a',$,'EPset_Annotation',$,(#1096));
 #1096=IFCPROPERTYSINGLEVALUE('Symbol',$,IFCLABEL('capsule-tag'),$);
 #1097=IFCCARTESIANPOINT((0.,0.,0.));
 #1098=IFCDIRECTION((0.,0.,1.));
@@ -5,7 +5,7 @@ FILE_NAME('EPset_Drawing.ifc','2020-01-01T00:00:00',(),(),'EPset_Drawing','EPset
 FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
-#1=IFCPROPERTYSETTEMPLATE('2JhNIvqZrFnAgxfhK0XVQX',$,'EPset_Drawing','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation',(#2,#3,#4,#5,#6,#7,#8,#9,#10,#11,#12,#13,#14,#15,#16,#17,#18,#19,#20,#21,#22));
+#1=IFCPROPERTYSETTEMPLATE('2JhNIvqZrFnAgxfhK0XVQX',$,'EPset_Drawing','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation/DRAWING',(#2,#3,#4,#5,#6,#7,#8,#9,#10,#11,#12,#13,#14,#15,#16,#17,#18,#19,#20,#21,#22,#23));
 #2=IFCSIMPLEPROPERTYTEMPLATE('23JavTMk98ZxXhrUEnjAcf',$,'TargetView','',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #3=IFCSIMPLEPROPERTYTEMPLATE('1yVWUt5H9DAOuu0OaMMLpe',$,'Scale','The scale of this drawing represented as a numerator and denominator, such as 1/100',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #4=IFCSIMPLEPROPERTYTEMPLATE('3gsuPBtU93b8f0gg1pjkq6',$,'HumanScale','The scale of this drawing in human readable format, such as 1:100',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
@@ -27,5 +27,6 @@ DATA;
 #20=IFCSIMPLEPROPERTYTEMPLATE('0joEq0Rd10cxweEh0NeHT6',$,'JoinCriteria','Comma separated selection keys which determine what cut objects are to be joined.',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
 #21=IFCSIMPLEPROPERTYTEMPLATE('0nYMT3OSj5gArVniCWZRtv',$,'ShadingStyles','',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
 #22=IFCSIMPLEPROPERTYTEMPLATE('3VWG22eZXBdQwdKlzMeVQH',$,'CurrentShadingStyle','',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
+#23=IFCSIMPLEPROPERTYTEMPLATE('28mJ$GDxb7kBbKFH_rACMQ',$,'AngleDecimalPlaces','',.P_SINGLEVALUE.,'IfcInteger',$,$,$,$,$,.READWRITE.);
 ENDSEC;
 END-ISO-10303-21;
@@ -5,6 +5,7 @@ FILE_NAME('EQto_BodyGeometryValidation.ifc','2020-01-01T00:00:00',(),(),'EQto_Bo
 FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
+/* This quantity set is Qto_BodyGeometryValidation backport from IFC4X3 to support IFC4. */
 #1=IFCPROPERTYSETTEMPLATE('2KS9su6r517uLXTGKwwDdn',$,'EQto_BodyGeometryValidation','Quantities supplied for validating the correct interpretation of the body shape representation at import. In case of multiple representation items, the quantities are summed for each of the items (irrespective of any overlap). Choosing a suitable tolerance value for comparing the supplied numbers to the numbers calculated from the reconstructed geometry is at the discretion of the importing application.',.QTO_OCCURRENCEDRIVEN.,'IfcProduct',(#2,#3,#4,#5,#6,#7));
 #2=IFCSIMPLEPROPERTYTEMPLATE('3iCdOOLRjCwQ_HRTB41Xh8',$,'GrossSurfaceArea','Total gross area of the object, normally generated as perimeter * length + 2 * cross section area. It is the sum of OuterSurfaceArea + (2 x CrossSectionArea) and shall only be given, if the OuterSurfaceArea and CrossSectionArea cannot be established separately.\X2\000A000A\X0\Total gross surface area of the element before applying product-level geometric features such as openings and projections.',.Q_AREA.,$,$,$,$,$,$,.READWRITE.);
 #3=IFCSIMPLEPROPERTYTEMPLATE('0juemEqF5889vg7HwR87Fv',$,'NetSurfaceArea','Net surface area of the object, normally generated as perimeter * length + 2 * cross section area taking into account possible processing features (cut-out''s, etc.) or openings and recesses.\X2\000A000A\X0\Total net surface area of the element after applying product-level geometric features such as openings and projections.',.Q_AREA.,$,$,$,$,$,$,.READWRITE.);
@@ -5,20 +5,20 @@ FILE_NAME('Psets_BBIM_Annotation.ifc','2020-01-01T00:00:00',(),(),'Psets_BBIM_An
 FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
-#1=IFCPROPERTYSETTEMPLATE('3VuPUwdCD2Qx3XDDRs0R1N',$,'EPset_Annotation','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation,IfcTypeProduct',(#2,#3,#4));
+#1=IFCPROPERTYSETTEMPLATE('3VuPUwdCD2Qx3XDDRs0R1N',$,'EPset_Annotation','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation,IfcTypeProduct',(#2,#3,#4));
 #2=IFCSIMPLEPROPERTYTEMPLATE('2P7JN79n96Q9pElZ83LKe4',$,'ZIndex','',.P_SINGLEVALUE.,'IfcInteger',$,$,$,$,$,.READWRITE.);
 #3=IFCSIMPLEPROPERTYTEMPLATE('1Wpx_r2xj1_9w5JpI0QRJy',$,'Symbol','',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #4=IFCSIMPLEPROPERTYTEMPLATE('3q0oxMUKP47vZ4jnyG$dDb',$,'Classes','Classes separarated by spaces that end up in classes for this element in svg. Can be used to specify the text font size: small - 1.8mm; regular - 2.5mm; large - 3.5mm; header - 5mm; title - 7mm. By default regular size is used.',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
-#5=IFCPROPERTYSETTEMPLATE('0iKwujnQL9IevVQato8f7Z',$,'BBIM_Batting','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation,IfcTypeProduct',(#6,#7));
+#5=IFCPROPERTYSETTEMPLATE('0iKwujnQL9IevVQato8f7Z',$,'BBIM_Batting','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation/BATTING,IfcTypeProduct',(#6,#7));
 #6=IFCSIMPLEPROPERTYTEMPLATE('0t2LEesGT1QRQtrIZUAR8L',$,'Thickness','Batting thickness',.P_SINGLEVALUE.,'IfcPositiveLengthMeasure',$,$,$,$,$,.READWRITE.);
 #7=IFCSIMPLEPROPERTYTEMPLATE('082PndS6v2kBOiJoSboMnh',$,'Reverse pattern direction','Reverse batting pattern (swap starting and ending points)',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
-#8=IFCPROPERTYSETTEMPLATE('1Dx2EiZnP67xotInXpwz90',$,'BBIM_Section','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation,IfcTypeProduct',(#9,#10,#11,#12,#13));
+#8=IFCPROPERTYSETTEMPLATE('1Dx2EiZnP67xotInXpwz90',$,'BBIM_Section','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation/SECTION,IfcTypeProduct',(#9,#10,#11,#12,#13));
 #9=IFCSIMPLEPROPERTYTEMPLATE('2a_9s8spHDc9dZHtgg71XL',$,'ShowStartArrow','Display start arrow.',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #10=IFCSIMPLEPROPERTYTEMPLATE('3i6SH_GbT7zhKea$wVE56A',$,'StartArrowSymbol','Custom symbol for the start of the section marker arrow. Need to make sure it''s present in "symbols.svg".',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #11=IFCSIMPLEPROPERTYTEMPLATE('1DtsPn5a9FG8$zXHDDMavY',$,'ShowEndArrow','Display end arrow.',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #12=IFCSIMPLEPROPERTYTEMPLATE('2$6U0mLI9AiPRWeBabdY3u',$,'EndArrowSymbol','Custom symbol for the end of the section marker arrow. Need to make sure it''s present in "symbols.svg".',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #13=IFCSIMPLEPROPERTYTEMPLATE('1naFqntIL7igCY7hCaE7kq',$,'HasConnectedSectionLine','Connect or disconnect section markers with line (by default = True).',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
-#14=IFCPROPERTYSETTEMPLATE('3V8oZ8YRD3_O7uR5vcUleS',$,'BBIM_Documentation','',.PSET_OCCURRENCEDRIVEN.,'IfcProject',(#15,#16,#17,#18,#19,#20,#21,#22,#23));
+#14=IFCPROPERTYSETTEMPLATE('3V8oZ8YRD3_O7uR5vcUleS',$,'BBIM_Documentation','',.PSET_TYPEDRIVENOVERRIDE.,'IfcProject',(#15,#16,#17,#18,#19,#20,#21,#22,#23));
 #15=IFCSIMPLEPROPERTYTEMPLATE('0ulAhgk3v9qfGlDILauR6J',$,'SheetsDir','Default sheets directory',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #16=IFCSIMPLEPROPERTYTEMPLATE('2yvlVKiQXASucfH40deCvu',$,'LayoutsDir','Default layouts directory',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #17=IFCSIMPLEPROPERTYTEMPLATE('2kXZqXicL3jRwsOnLM_0ho',$,'TitleblocksDir','Default titleblocks directory',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
@@ -28,7 +28,7 @@ DATA;
 #21=IFCSIMPLEPROPERTYTEMPLATE('1UDakJ5_f7kBhggNSW4$h5',$,'SymbolsPath','Default symbols SVG',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #22=IFCSIMPLEPROPERTYTEMPLATE('0d53LEtgLDQxnv__NfgH7i',$,'PatternsPath','Default patterns SVG',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #23=IFCSIMPLEPROPERTYTEMPLATE('26qFNMv7nCHgU6Jd7Anga5',$,'ShadingStylesPath','Default shading styles',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
-#24=IFCPROPERTYSETTEMPLATE('0I9merLinF5Ap$aZwaclgm',$,'BBIM_Dimension','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation,IfcTypeProduct',(#25,#26,#27,#28));
+#24=IFCPROPERTYSETTEMPLATE('0I9merLinF5Ap$aZwaclgm',$,'BBIM_Dimension','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation/DIMENSION,IfcTypeProduct',(#25,#26,#27,#28));
 #25=IFCSIMPLEPROPERTYTEMPLATE('1rL2AbQsXD8RbpoWH5pYOV',$,'ShowDescriptionOnly','Hide the measurement values and show only annotation description',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #26=IFCSIMPLEPROPERTYTEMPLATE('0SVyOfB0rC2xNfdRYf3XvY',$,'SuppressZeroInches','Suppress 0 inch values in dimension annotation text (for example: 12'' - 0" -> 12'')',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #27=IFCSIMPLEPROPERTYTEMPLATE('2bUmj458PBqPAtUoI3MXsb',$,'TextPrefix','Text to add before annotation measurement value',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
@@ -16,6 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

+from __future__ import annotations
 import os
 import bpy
 import json
@@ -27,6 +28,7 @@ import addon_utils
 import ifcopenshell
 import ifcopenshell.api
 import ifcopenshell.util.placement
+import ifcopenshell.util.unit
 import blenderbim.tool as tool
 import blenderbim.core.geometry
 import blenderbim.core.aggregate
@@ -34,6 +36,8 @@ import blenderbim.core.spatial
 import blenderbim.core.style
 from blenderbim.bim.ifc import IfcStore
 from mathutils import Vector
+from typing import Union
+from logging import Logger


 class IfcExporter:
@@ -85,8 +89,8 @@ class IfcExporter:
            self.get_application_name(), tool.Blender.get_blenderbim_version()
        )

-    def sync_all_objects(self):
-        results = []
+    def sync_all_objects(self, skip_unlinking=False) -> list[ifcopenshell.entity_instance]:
+        results: list[ifcopenshell.entity_instance] = []
        self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)
        for ifc_definition_id in list(IfcStore.id_map.keys()):
            obj = IfcStore.id_map[ifc_definition_id]
@@ -95,19 +99,21 @@ class IfcExporter:
                    continue
                if obj.library:
                    continue
-                tool.Collector.sync(obj)
+                tool.Collector.sync(obj, skip_unlinking)
                result = self.sync_object_placement(obj)
                if result:
                    results.append(result)
                result = self.sync_object_material(obj)
+                # TODO: sync_object_material always returns None
+                # so it's never really appended
                if result:
                    results.append(result)
            except ReferenceError:
                pass  # The object is likely deleted
        return results

-    def sync_edited_objects(self):
-        results = []
+    def sync_edited_objects(self) -> list[ifcopenshell.entity_instance]:
+        results: list[ifcopenshell.entity_instance] = []
        for obj in IfcStore.edited_objs.copy():
            if not obj:
                continue
@@ -125,7 +131,7 @@ class IfcExporter:
        IfcStore.edited_objs.clear()
        return results

-    def sync_object_material(self, obj):
+    def sync_object_material(self, obj: bpy.types.Object) -> None:
        if not obj.data or not isinstance(obj.data, bpy.types.Mesh):
            return
        if not self.has_changed_materials(obj):
@@ -136,11 +142,10 @@ class IfcExporter:
        checksum = obj.data.BIMMeshProperties.material_checksum
        return checksum != str([s.id() for s in tool.Geometry.get_styles(obj) if s])

-    def sync_object_placement(self, obj):
+    def sync_object_placement(self, obj: bpy.types.Object) -> Union[ifcopenshell.entity_instance, None]:
        element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
        if not tool.Ifc.is_moved(obj):
            return
-        blender_matrix = np.array(obj.matrix_world)
        if (obj.scale - Vector((1.0, 1.0, 1.0))).length > 1e-4:
            bpy.ops.bim.update_representation(obj=obj.name)
            return element
@@ -151,7 +156,7 @@ class IfcExporter:
        blenderbim.core.geometry.edit_object_placement(tool.Ifc, tool.Geometry, tool.Surveyor, obj=obj)
        return element

-    def sync_grid_axis_object_placement(self, obj, element):
+    def sync_grid_axis_object_placement(self, obj: bpy.types.Object, element: ifcopenshell.entity_instance) -> None:
        grid = (element.PartOfU or element.PartOfV or element.PartOfW)[0]
        grid_obj = tool.Ifc.get_object(grid)
        if grid_obj:
@@ -160,10 +165,10 @@ class IfcExporter:
                bpy.ops.bim.update_representation(obj=obj.name)
        tool.Geometry.record_object_position(obj)

-    def get_application_name(self):
+    def get_application_name(self) -> str:
        return "BlenderBIM"

-    def get_application_version(self):
+    def get_application_version(self) -> str:
        version = ".".join(
            [
                str(x)
@@ -181,11 +186,13 @@ class IfcExporter:

 class IfcExportSettings:
    def __init__(self):
-        self.logger = None
-        self.output_file = None
+        self.logger: Logger = None
+        self.output_file: str = None
+        self.json_version: str = None
+        self.json_compact: bool = None

    @staticmethod
-    def factory(context, output_file, logger):
+    def factory(context: bpy.types.Context, output_file: str, logger: Logger) -> IfcExportSettings:
        settings = IfcExportSettings()
        settings.output_file = output_file
        settings.logger = logger
@@ -31,6 +31,7 @@ from blenderbim.bim.module.model.data import AuthoringData
 from blenderbim.bim.module.model.workspace import LIST_OF_TOOLS, TOOLS_TO_CLASSES_MAP
 from mathutils import Vector
 from math import cos, degrees
+from typing import Union


 cwd = os.path.dirname(os.path.realpath(__file__))
@@ -191,6 +192,8 @@ def refresh_ui_data():
    if isinstance(tool.Ifc.get(), ifcopenshell.sqlite):
        tool.Ifc.get().clear_cache()

+    bpy.context.scene.DocProperties.should_draw_decorations = bpy.context.scene.DocProperties.should_draw_decorations
+

@persistent
 def loadIfcStore(scene):
@@ -220,7 +223,7 @@ def redo_post(scene):
    tool.Ifc.rebuild_element_maps()


-def get_application(ifc):
+def get_application(ifc: ifcopenshell.file) -> ifcopenshell.entity_instance:
    # TODO: cache this for even faster application retrieval. It honestly makes a difference on long scripts.
    version = get_application_version()
    for element in ifc.by_type("IfcApplication"):
@@ -235,7 +238,20 @@ def get_application(ifc):
    )


-def get_application_version():
+def get_user(ifc: ifcopenshell.file) -> Union[ifcopenshell.entity_instance, None]:
+    # TODO: cache this for even faster application retrieval. It honestly makes a difference on long scripts.
+    if pao := next(iter(ifc.by_type("IfcPersonAndOrganization")), None):
+        return pao
+    elif ifc.schema == "IFC2X3":
+        if (person := next(iter(ifc.by_type("IfcPerson")), None)) is None:
+            person = tool.Ifc.run("owner.add_person")
+        if (organization := next(iter(ifc.by_type("IfcOrganization")), None)) is None:
+            organization = tool.Ifc.run("owner.add_organisation")
+        pao = tool.Ifc.run("owner.add_person_and_organisation", person=person, organisation=organization)
+        return pao
+
+
+def get_application_version() -> str:
    return ".".join(
        [
            str(x)
@@ -254,60 +270,6 @@ def viewport_shading_changed_callback(area):
        bpy.context.scene.BIMStylesProperties.active_style_type = "External"


-@classmethod
-def poll_check_blender_tab(cls, context):
-    return tool.Blender.is_tab(context, "BLENDER")
-
-
-def get_override_scene_panel(panel_name):
-    original_panel = getattr(bpy.types, panel_name)
-
-    override_panel = type(f"Override_{panel_name}", (original_panel,), {})
-    override_panel.bl_idname = f"{panel_name}_override"
-
-    # some blender panel depend on other and register_class will throw an error
-    # if we won't override their `bl_parent_id`
-    bl_parent_id = getattr(override_panel, "bl_parent_id", None)
-    if bl_parent_id is not None:
-        override_panel.bl_parent_id = f"{bl_parent_id}_override"
-
-    # override poll method
-    poll = getattr(override_panel, "poll", None)
-    if poll is None:
-        override_panel.poll = poll_check_blender_tab
-    else:
-
-        @classmethod
-        def wrapped_poll(cls, context):
-            return super(override_panel, cls).poll(context) and poll_check_blender_tab.__func__(cls, context)
-
-        override_panel.poll = wrapped_poll
-
-    return override_panel
-
-
-# TODO: possibly override scene panels from other addons too?
-# list can be updated from
-# https://projects.blender.org/blender/blender/src/branch/main/scripts/startup/bl_ui/properties_scene.py#L421
-OVERRIDE_SCENE_PANELS = (
-    "SCENE_PT_scene",
-    "SCENE_PT_unit",
-    "SCENE_PT_physics",
-    "SCENE_PT_rigid_body_world",
-    "SCENE_PT_rigid_body_world_settings",
-    "SCENE_PT_rigid_body_cache",
-    "SCENE_PT_rigid_body_field_weights",
-    "SCENE_PT_audio",
-    "SCENE_PT_keying_sets",
-    "SCENE_PT_custom_props",
-    # after SCENE_PT_keying_sets
-    "SCENE_PT_keying_set_paths",
-    "SCENE_PT_keyframing_settings",
-)
-if bpy.app.version >= (4, 0):
-    OVERRIDE_SCENE_PANELS += ("SCENE_PT_simulation",)
-
-
@persistent
 def load_post(scene):
    global global_subscription_owner
@@ -330,7 +292,7 @@ def load_post(scene):
                key=key, owner=global_subscription_owner, args=(area,), notify=viewport_shading_changed_callback
            )

-    ifcopenshell.api.owner.settings.get_user = lambda ifc: core_owner.get_user(tool.Owner)
+    ifcopenshell.api.owner.settings.get_user = get_user
    ifcopenshell.api.owner.settings.get_application = get_application
    AuthoringData.type_thumbnails = {}

@@ -339,19 +301,16 @@ def load_post(scene):

    if bpy.context.preferences.addons["blenderbim"].preferences.should_setup_workspace:
        if "BIM" in bpy.data.workspaces:
-            bpy.context.window.workspace = bpy.data.workspaces["BIM"]
+            if bpy.context.preferences.addons["blenderbim"].preferences.activate_workspace:
+                bpy.context.window.workspace = bpy.data.workspaces["BIM"]
        else:
            bpy.ops.workspace.append_activate(idname="BIM", filepath=os.path.join(cwd, "data", "workspace.blend"))

-        # To improve usability for new users, we hijack the scene properties
-        # tab. We override default scene properties panels with our own poll
-        # to hide them unless the user has chosen to view Blender properties.
-        for panel in OVERRIDE_SCENE_PANELS:
-            if panel in blenderbim.bim.overridden_scene_panels:
-                continue
-            override_panel = get_override_scene_panel(panel)
-            original_panel = getattr(bpy.types, panel)
-            bpy.utils.register_class(override_panel)
-            bpy.utils.unregister_class(original_panel)
-            blenderbim.bim.overridden_scene_panels[panel] = (original_panel, override_panel)
+    # To improve usability for new users, we hijack the scene properties
+    # tab. We override default scene properties panels with our own poll
+    # to hide them unless the user has chosen to view Blender properties.
+    for panel in tool.Blender.get_scene_panels_list():
+        if panel in blenderbim.bim.original_scene_panels_polls:
+            continue
+        tool.Blender.override_scene_panel(panel)
    tool.Blender.setup_tabs()
@@ -29,6 +29,7 @@ from mathutils import geometry
 from mathutils import Vector
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
+from typing import Optional, Callable, Any, Union


 def draw_attributes(props, layout, copy_operator=None, popup_active_attribute=None):
@@ -75,6 +76,10 @@ def draw_attribute(attribute, layout, copy_operator=None):
        op.data_path = attribute.path_from_id("string_value")
    if attribute.is_optional:
        layout.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
+
+    if attribute.name == "GlobalId":
+        layout.operator("bim.generate_global_id", icon="FILE_REFRESH", text="")
+
    if copy_operator:
        op = layout.operator(f"{copy_operator}", text="", icon="COPYDOWN")
        op.name = attribute.name
@@ -86,7 +91,11 @@ def import_attributes(ifc_class, props, data, callback=None):


 # A more elegant attribute importer signature, intended to supersede import_attributes
-def import_attributes2(element, props, callback=None):
+def import_attributes2(
+    element: Union[str, ifcopenshell.entity_instance],
+    props: bpy.types.PropertyGroup,
+    callback: Optional[Callable] = None,
+) -> None:
    if isinstance(element, str):
        attributes = tool.Ifc.schema().declaration_by_name(element).as_entity().all_attributes()
        info = {a.name(): None for a in attributes}
@@ -116,7 +125,7 @@ def import_attribute(attribute, props, data, callback=None):
    elif is_handled_by_callback is False:
        props.remove(len(props) - 1)
    elif data_type == "string":
-        new.string_value = "" if new.is_null else str(data[attribute.name()])
+        new.string_value = "" if new.is_null else str(data[attribute.name()]).replace("\n", "\\n")
        if attribute.type_of_attribute().declared_type().name() == "IfcURIReference":
            new.is_uri = True
    elif data_type == "boolean":
@@ -178,7 +187,7 @@ def add_attribute_description(attribute_blender, attribute_ifc=None):
        attribute_blender.description = description


-def export_attributes(props, callback=None):
+def export_attributes(props, callback: Optional[Callable] = None) -> dict[str, Any]:
    attributes = {}
    for prop in props:
        is_handled_by_callback = callback(attributes, prop) if callback else False
@@ -216,48 +225,6 @@ def get_enum_items(data, prop_name, context=None):
    return items


-def get_obj_ifc_definition_id(context, obj, obj_type):
-    if obj_type == "Object":
-        return bpy.data.objects.get(obj).BIMObjectProperties.ifc_definition_id
-    elif obj_type == "Material":
-        return bpy.data.materials.get(obj).BIMObjectProperties.ifc_definition_id
-    elif obj_type == "MaterialSet":
-        return ifcopenshell.util.element.get_material(
-            tool.Ifc.get_entity(bpy.data.objects.get(obj)), should_skip_usage=True
-        ).id()
-    elif obj_type == "MaterialSetItem":
-        return bpy.data.objects.get(obj).BIMObjectMaterialProperties.active_material_set_item_id
-    elif obj_type == "Task":
-        return context.scene.BIMTaskTreeProperties.tasks[
-            context.scene.BIMWorkScheduleProperties.active_task_index
-        ].ifc_definition_id
-    elif obj_type == "Cost":
-        return context.scene.BIMCostProperties.cost_items[
-            context.scene.BIMCostProperties.active_cost_item_index
-        ].ifc_definition_id
-    elif obj_type == "Resource":
-        return context.scene.BIMResourceTreeProperties.resources[
-            context.scene.BIMResourceProperties.active_resource_index
-        ].ifc_definition_id
-    elif obj_type == "Profile":
-        return context.scene.BIMProfileProperties.profiles[
-            context.scene.BIMProfileProperties.active_profile_index
-        ].ifc_definition_id
-    elif obj_type == "WorkSchedule":
-        return context.scene.BIMWorkScheduleProperties.active_work_schedule_id
-    elif obj_type == "Group":
-        prop = context.scene.BIMGroupProperties
-        return prop.groups[prop.active_group_index].ifc_definition_id
-
-# hack to close popup
-# https://blender.stackexchange.com/a/202576/130742
-def close_operator_panel(event):
-    x, y = event.mouse_x, event.mouse_y
-    bpy.context.window.cursor_warp(10, 10)
-    move_back = lambda: bpy.context.window.cursor_warp(x, y)
-    bpy.app.timers.register(move_back, first_interval=0.01)
-
-
 def convert_property_group_from_si(property_group, skip_props=()):
    """Method converts property group values from si to current ifc project units

@@ -304,6 +271,9 @@ def draw_filter(layout, filter_groups, data, module):
        op.type = sprops.facet
        op.index = i
        op.module = module
+        op = row.operator("bim.remove_filter_group", text="", icon="X")
+        op.index = i
+        op.module = module

        for j, ifc_filter in enumerate(filter_group.filters):
            if ifc_filter.type == "entity":
@@ -334,6 +304,9 @@ def draw_filter(layout, filter_groups, data, module):
            elif ifc_filter.type == "group":
                row = box.row(align=True)
                row.prop(ifc_filter, "value", text="", icon="OUTLINER_COLLECTION")
+            elif ifc_filter.type == "parent":
+                row = box.row(align=True)
+                row.prop(ifc_filter, "value", text="", icon="FILE_PARENT")
            elif ifc_filter.type == "query":
                row = box.row(align=True)
                row.prop(ifc_filter, "name", text="", icon="POINTCLOUD_DATA")
@@ -350,11 +323,6 @@ def draw_filter(layout, filter_groups, data, module):
            op.index = j
            op.module = module

-        row = box.row()
-        op = row.operator("bim.remove_filter_group", icon="X")
-        op.index = i
-        op.module = module
-

 # TODO this should move into ifcopenshell.util

@@ -19,37 +19,46 @@
 import os
 import bpy
 import uuid
+import shutil
 import hashlib
 import zipfile
 import tempfile
+import traceback
 import ifcopenshell
+import ifcopenshell.geom
+import ifcopenshell.ifcopenshell_wrapper
+import blenderbim
 import blenderbim.bim.handler
 import blenderbim.tool as tool
 from pathlib import Path
 from blenderbim.tool.brick import BrickStore
+from typing import Set, Union, Optional
+
+
+IFC_CONNECTED_TYPE = Union[bpy.types.Material, bpy.types.Object]


 class IfcStore:
-    path = ""
-    file = None
-    schema = None
-    cache = None
-    cache_path = None
-    id_map = {}
-    guid_map = {}
-    edited_objs = set()
-    pset_template_path = ""
-    pset_template_file = None
-    classification_path = ""
-    classification_file = None
-    library_path = ""
-    library_file = None
+    path: str = ""
+    file: Optional[ifcopenshell.file] = None
+    schema: Optional[ifcopenshell.ifcopenshell_wrapper.schema_definition] = None
+    cache: Optional[ifcopenshell.ifcopenshell_wrapper.HdfSerializer] = None
+    cache_path: Optional[str] = None
+    id_map: dict[int, IFC_CONNECTED_TYPE] = {}
+    guid_map: dict[str, IFC_CONNECTED_TYPE] = {}
+    edited_objs: Set[bpy.types.Object] = set()
+    pset_template_path: str = ""
+    pset_template_file: Optional[ifcopenshell.file] = None
+    classification_path: str = ""
+    classification_file: Optional[ifcopenshell.file] = None
+    library_path: str = ""
+    library_file: Optional[ifcopenshell.file] = None
    current_transaction = ""
    last_transaction = ""
    history = []
    future = []
    schema_identifiers = ["IFC4", "IFC2X3", "IFC4X3"]
-    session_files = {}
+    session_files: dict[str, ifcopenshell.file] = {}

    @staticmethod
    def purge():
@@ -80,8 +89,8 @@ class IfcStore:
            if IfcStore.path:
                try:
                    IfcStore.load_file(IfcStore.path)
-                except:
-                    pass
+                except Exception as e:
+                    print(f"Failed to load file {IfcStore.path}. Error details: {e}")
        return IfcStore.file

    @staticmethod
@@ -113,11 +122,17 @@ class IfcStore:
        ifc_hash = hashlib.md5(ifc_key.encode("utf-8")).hexdigest()
        new_cache_path = os.path.join(bpy.context.scene.BIMProperties.data_dir, "cache", f"{ifc_hash}.h5")
        IfcStore.cache = None
-        os.replace(IfcStore.cache_path, new_cache_path)
+        try:
+            shutil.move(IfcStore.cache_path, new_cache_path)
+        except PermissionError:
+            try:
+                shutil.copy2(IfcStore.cache_path, new_cache_path)
+            except PermissionError:
+                pass  # Well we tried. No cache for you!
        IfcStore.get_cache()

    @staticmethod
-    def load_file(path):
+    def load_file(path) -> None:
        if not os.path.isfile(path):
            return
        extension = path.split(".")[-1]
@@ -146,7 +161,7 @@ class IfcStore:
        return IfcStore.schema

    @staticmethod
-    def get_element(id_or_guid):
+    def get_element(id_or_guid: Union[int, str]) -> IFC_CONNECTED_TYPE:
        if isinstance(id_or_guid, int):
            map_object = IfcStore.id_map
        else:
@@ -159,7 +174,7 @@ class IfcStore:
        return obj

    @staticmethod
-    def relink_all_objects():
+    def relink_all_objects() -> None:
        if not IfcStore.get_file():
            return
        for obj in bpy.data.objects:
@@ -172,7 +187,7 @@ class IfcStore:
            IfcStore.relink_object(obj)

    @staticmethod
-    def relink_object(obj):
+    def relink_object(obj: IFC_CONNECTED_TYPE) -> None:
        if not obj:
            return
        if obj.BIMObjectProperties.ifc_definition_id:
@@ -193,7 +208,7 @@ class IfcStore:
            IfcStore.commit_link_element(data)

    @staticmethod
-    def link_element(element, obj):
+    def link_element(element: ifcopenshell.entity_instance, obj: IFC_CONNECTED_TYPE) -> None:
        # Please use tool.Ifc.link() instead of this method. We want to
        # refactor this class and deprecate usage of IfcStore in favour of
        # tools.
@@ -207,7 +222,7 @@ class IfcStore:
        elif existing_obj:
            try:
                existing_obj.name
-                IfcStore.unlink_element(obj=existing_obj)
+                IfcStore.unlink_element(element=element, obj=existing_obj)
            except:
                pass
        IfcStore.id_map[element.id()] = obj
@@ -259,7 +274,7 @@ class IfcStore:
        # TODO We're handling id_map and guid_map, but what about edited_objs? This might cause big problems.

    @staticmethod
-    def rollback_unlink_element(data):
+    def rollback_unlink_element(data) -> None:
        if "id" not in data or "obj" not in data:
            return
        obj = bpy.data.objects.get(data["obj"])
@@ -268,13 +283,15 @@ class IfcStore:
            IfcStore.guid_map[data["guid"]] = obj

    @staticmethod
-    def commit_unlink_element(data):
+    def commit_unlink_element(data) -> None:
        del IfcStore.id_map[data["id"]]
        if data["guid"]:
            del IfcStore.guid_map[data["guid"]]

    @staticmethod
-    def unlink_element(element=None, obj=None):
+    def unlink_element(
+        element: Optional[ifcopenshell.entity_instance] = None, obj: Optional[IFC_CONNECTED_TYPE] = None
+    ) -> None:
        if element is None:
            try:
                element = tool.Ifc.get_entity(obj)
@@ -320,7 +337,8 @@ class IfcStore:
            )

    @staticmethod
-    def execute_ifc_operator(operator, context, is_invoke=False):
+    def execute_ifc_operator(operator: bpy.types.Operator, context: bpy.types.Context, is_invoke=False):
+        blenderbim.last_actions.append({"type": "operator", "name": operator.bl_idname})
        bpy.context.scene.BIMProperties.is_dirty = True
        is_top_level_operator = not bool(IfcStore.current_transaction)

@@ -335,10 +353,14 @@ class IfcStore:
        else:
            operator.transaction_key = IfcStore.current_transaction

-        if is_invoke:
-            result = getattr(operator, "_invoke")(context, None)
-        else:
-            result = getattr(operator, "_execute")(context)
+        try:
+            if is_invoke:
+                result = getattr(operator, "_invoke")(context, None)
+            else:
+                result = getattr(operator, "_execute")(context)
+        except:
+            blenderbim.last_error = traceback.format_exc()
+            raise

        if is_top_level_operator:
            if tool.Ifc.get():
@@ -354,17 +376,17 @@ class IfcStore:
        return result

    @staticmethod
-    def begin_transaction(operator):
+    def begin_transaction(operator: bpy.types.Operator) -> None:
        IfcStore.current_transaction = str(uuid.uuid4())
        operator.transaction_key = IfcStore.current_transaction

    @staticmethod
-    def end_transaction(operator):
+    def end_transaction(operator: bpy.types.Operator) -> None:
        IfcStore.current_transaction = ""
        operator.transaction_key = ""

    @staticmethod
-    def add_transaction_operation(operator, rollback=None, commit=None):
+    def add_transaction_operation(operator: bpy.types.Operator, rollback=None, commit=None) -> None:
        key = getattr(operator, "transaction_key", None)
        data = getattr(operator, "transaction_data", None)
        bpy.context.scene.BIMProperties.last_transaction = key
@@ -380,7 +402,7 @@ class IfcStore:
        IfcStore.future = []

    @staticmethod
-    def undo(until_key=None):
+    def undo(until_key=None) -> None:
        BrickStore.undo()
        if not IfcStore.history:
            return
@@ -395,7 +417,7 @@ class IfcStore:
            IfcStore.future.append(event)

    @staticmethod
-    def redo(until_key=None):
+    def redo(until_key=None) -> None:
        BrickStore.redo()

        if not IfcStore.future:
@@ -26,29 +26,37 @@ import bmesh
 import logging
 import mathutils
 import numpy as np
+import numpy.typing as npt
 import multiprocessing
 import ifcopenshell
 import ifcopenshell.geom
 import ifcopenshell.util.unit
 import ifcopenshell.util.element
 import ifcopenshell.util.geolocation
+import ifcopenshell.util.placement
+import ifcopenshell.util.representation
+import ifcopenshell.util.shape
 import blenderbim.tool as tool
+import blenderbim.core.spatial
+import ifcopenshell.ifcopenshell_wrapper as ifcopenshell_wrapper
 from itertools import chain, accumulate
-from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.ifc import IfcStore, IFC_CONNECTED_TYPE
+from blenderbim.tool.loader import OBJECT_DATA_TYPE
 from blenderbim.bim.module.drawing.prop import ANNOTATION_TYPES_DATA
+from typing import Dict, Union, Optional, Any


 class MaterialCreator:
    def __init__(self, ifc_import_settings: IfcImportSettings, ifc_importer: IfcImporter):
-        self.mesh = None
-        self.obj = None
-        self.materials = {}
-        self.styles = {}
-        self.parsed_meshes = set()
+        self.mesh: bpy.types.Mesh = None
+        self.obj: bpy.types.Object = None
+        self.materials: Dict[int, bpy.types.Material] = {}
+        self.styles: Dict[int, bpy.types.Material] = {}
+        self.parsed_meshes: set[str] = set()
        self.ifc_import_settings = ifc_import_settings
        self.ifc_importer = ifc_importer

-    def create(self, element, obj, mesh):
+    def create(self, element: ifcopenshell.entity_instance, obj: bpy.types.Object, mesh: bpy.types.Mesh) -> None:
        self.mesh = mesh
        # as ifcopenshell triangulates the mesh, we need to merge it to quads again
        self.obj = obj
@@ -64,7 +72,7 @@ class MaterialCreator:
            self.assign_material_slots_to_faces()
        tool.Geometry.record_object_materials(obj)

-    def add_default_material(self, element):
+    def add_default_material(self, element: ifcopenshell.entity_instance) -> None:
        element_material = ifcopenshell.util.element.get_material(element)
        if not element_material:
            return
@@ -82,14 +90,17 @@ class MaterialCreator:
            self.mesh.materials.append(self.materials[material.id()])
            return

-    def load_existing_materials(self):
+    def load_existing_materials(self) -> None:
        for material in bpy.data.materials:
            if material.BIMObjectProperties.ifc_definition_id:
                self.materials[material.BIMObjectProperties.ifc_definition_id] = material
            if material.BIMMaterialProperties.ifc_style_id:
                self.styles[material.BIMMaterialProperties.ifc_style_id] = material

-    def parse_representations(self, element):
+    def parse_representations(self, element: ifcopenshell.entity_instance) -> bool:
+        """Search for styles in in all `element`'s representation items
+        and adds them to `self.mesh.materials`.\n
+        Returns `True` if any styles were found and added, returns `False` otherwise."""
        has_parsed = False
        if hasattr(element, "Representation"):
            for representation in element.Representation.Representations:
@@ -103,7 +114,7 @@ class MaterialCreator:
                    has_parsed = True
        return has_parsed

-    def parse_representation(self, representation):
+    def parse_representation(self, representation: ifcopenshell.entity_instance) -> bool:
        has_parsed = False
        representation_items = self.resolve_all_stylable_representation_items(representation)
        for item in representation_items:
@@ -111,9 +122,9 @@ class MaterialCreator:
                has_parsed = True
        return has_parsed

-    def parse_representation_item(self, item):
+    def parse_representation_item(self, item: ifcopenshell.entity_instance) -> bool:
        if not item.StyledByItem:
-            return
+            return False
        style_ids = []
        styles = list(item.StyledByItem[0].Styles)
        while styles:
@@ -123,11 +134,12 @@ class MaterialCreator:
            elif style.is_a("IfcPresentationStyleAssignment"):
                styles.extend(style.Styles)
        if not style_ids:
-            return
+            return False
        for style_id in style_ids:
            material = self.styles[style_id]

-            def get_ifc_coordinate(material):
+            def get_ifc_coordinate(material: ifcopenshell.entity_instance) -> Union[ifcopenshell.entity_instance, None]:
+                """returns IfcTextureCoordinate"""
                texture_style = tool.Style.get_texture_style(material)
                if not texture_style:
                    return
@@ -148,7 +160,7 @@ class MaterialCreator:
                self.mesh.materials.append(material)
        return True

-    def assign_material_slots_to_faces(self):
+    def assign_material_slots_to_faces(self) -> None:
        if "ios_materials" not in self.mesh or not self.mesh["ios_materials"]:
            return
        if len(self.mesh.materials) == 1:
@@ -156,8 +168,12 @@ class MaterialCreator:
        material_to_slot = {}

        if len(self.mesh.polygons) == len(self.mesh["ios_material_ids"]):
-            for i, material in enumerate(self.mesh["ios_materials"]):
-                slot_index = self.mesh.materials.find(self.styles[material].name)
+            for i, style_or_material_id in enumerate(self.mesh["ios_materials"]):
+                if style_or_material_id in self.styles:
+                    blender_material = self.styles[style_or_material_id]
+                else:
+                    blender_material = self.materials[style_or_material_id]
+                slot_index = self.mesh.materials.find(blender_material.name)
                material_to_slot[i] = slot_index

            material_index = [
@@ -165,7 +181,10 @@ class MaterialCreator:
            ]
            self.mesh.polygons.foreach_set("material_index", material_index)

-    def resolve_all_stylable_representation_items(self, representation):
+    def resolve_all_stylable_representation_items(
+        self, representation: ifcopenshell.entity_instance
+    ) -> list[ifcopenshell.entity_instance]:
+        """returns list of resolved IfcRepresentationItems"""
        items = []
        for item in representation.Items:
            if item.is_a("IfcMappedItem"):
@@ -183,24 +202,30 @@ class MaterialCreator:


 class IfcImporter:
-    def __init__(self, ifc_import_settings):
+    def __init__(self, ifc_import_settings: IfcImportSettings):
        self.ifc_import_settings = ifc_import_settings
        self.diff = None
-        self.file = None
-        self.context_settings = []
-        self.gross_context_settings = []
+        self.file: ifcopenshell.file = None
+        self.context_settings: list[ifcopenshell.geom.main.settings] = []
+        self.gross_context_settings: list[ifcopenshell.geom.main.settings] = []
        self.contexts = []
        self.project = None
        self.has_existing_project = False
-        self.collections = {}
-        self.elements = set()
-        self.type_collection = None
+        # element guids to blender collections mapping
+        self.collections: dict[str, bpy.types.Collection] = {}
+        self.elements: set[ifcopenshell.entity_instance] = set()
+        self.annotations: set[ifcopenshell.entity_instance] = set()
+        self.gross_elements: set[ifcopenshell.entity_instance] = set()
+        self.element_types: set[ifcopenshell.entity_instance] = set()
+        self.spatial_elements: set[ifcopenshell.entity_instance] = set()
+        self.type_collection: bpy.types.Collection = None
        self.type_products = {}
        self.meshes = {}
        self.mesh_shapes = {}
        self.time = 0
        self.unit_scale = 1
-        self.added_data = {}
+        # ifc definition ids to blender elements mapping
+        self.added_data: dict[int, IFC_CONNECTED_TYPE] = {}
        self.native_elements = set()
        self.native_data = {}
        self.progress = 0
@@ -276,25 +301,27 @@ class IfcImporter:
        if self.ifc_import_settings.should_setup_viewport_camera:
            self.setup_viewport_camera()
        self.setup_arrays()
+        self.profile_code("Setup arrays")
+        blenderbim.core.spatial.import_spatial_decomposition(tool.Spatial)
        self.update_progress(100)
        bpy.context.window_manager.progress_end()

-    def is_element_far_away(self, element):
+    def is_element_far_away(self, element: ifcopenshell.entity_instance) -> bool:
        try:
            placement = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
            point = placement[:, 3][0:3]
            return self.is_point_far_away(point, is_meters=False)
        except:
-            pass
+            return False

-    def is_point_far_away(self, point, is_meters=True):
+    def is_point_far_away(
+        self, point: Union[ifcopenshell.entity_instance, npt.NDArray[np.float64]], is_meters: bool = True
+    ) -> bool:
        # Locations greater than 1km are not considered "small sites" according to the georeferencing guide
        # Users can configure this if they have to handle larger sites but beware of surveying precision
        limit = self.ifc_import_settings.distance_limit
        limit = limit if is_meters else (limit / self.unit_scale)
-        coords = point
-        if hasattr(point, "Coordinates"):
-            coords = point.Coordinates
+        coords = getattr(point, "Coordinates", point)
        return abs(coords[0]) > limit or abs(coords[1]) > limit or abs(coords[2]) > limit

    def process_context_filter(self):
@@ -408,7 +435,7 @@ class IfcImporter:
        self.annotations = set([a for a in self.file.by_type("IfcAnnotation")])
        self.annotations -= drawing_annotations

-        self.elements = [e for e in self.elements if not e.is_a("IfcFeatureElement")]
+        self.elements = [e for e in self.elements if not e.is_a("IfcFeatureElement") or e.is_a("IfcSurfaceFeature")]
        if self.ifc_import_settings.is_coordinating:
            self.elements = [e for e in self.elements if e.Representation]

@@ -439,7 +466,9 @@ class IfcImporter:
            for element in self.gross_elements:
                print(element)

-    def get_spatial_elements_filtered_by_elements(self, elements):
+    def get_spatial_elements_filtered_by_elements(
+        self, elements: set[ifcopenshell.entity_instance]
+    ) -> set[ifcopenshell.entity_instance]:
        leaf_spatial_elements = set([ifcopenshell.util.element.get_container(e) for e in elements])
        results = set()
        for spatial_element in leaf_spatial_elements:
@@ -577,9 +606,14 @@ class IfcImporter:
        return products

    def predict_dense_mesh(self):
+        if self.ifc_import_settings.should_use_native_meshes:
+            return
+
        threshold = 10000  # Just from experience.

-        faces = [len(e.CfsFaces) for e in self.file.by_type("IfcClosedShell")]
+        # The check for CfsFaces/Faces/CoordIndex accommodates invalid data from Cadwork
+        # 0 IfcClosedShell.CfsFaces
+        faces = [len(faces) for e in self.file.by_type("IfcClosedShell") if (faces := e[0])]
        if faces and max(faces) > threshold:
            self.ifc_import_settings.should_use_native_meshes = True
            return
@@ -587,12 +621,14 @@ class IfcImporter:
        if self.file.schema == "IFC2X3":
            return

-        faces = [len(e.Faces) for e in self.file.by_type("IfcPolygonalFaceSet")]
+        # 2 IfcPolygonalFaceSet.Faces
+        faces = [len(faces) for e in self.file.by_type("IfcPolygonalFaceSet") if (faces := e[2])]
        if faces and max(faces) > threshold:
            self.ifc_import_settings.should_use_native_meshes = True
            return

-        faces = [len(e.CoordIndex) for e in self.file.by_type("IfcTriangulatedFaceSet")]
+        # 3 IfcTriangulatedFaceSet.CoordIndex
+        faces = [len(index) for e in self.file.by_type("IfcTriangulatedFaceSet") if (index := e[3])]
        if faces and max(faces) > threshold:
            self.ifc_import_settings.should_use_native_meshes = True

@@ -650,7 +686,7 @@ class IfcImporter:
        props.blender_orthogonal_height = str(offset_point[2])
        props.has_blender_offset = True

-    def get_offset_point(self):
+    def get_offset_point(self) -> Union[npt.NDArray[np.float64], None]:
        elements_checked = 0
        # If more than these elements aren't far away, the file probably isn't absolutely positioned
        element_checking_threshold = 10
@@ -673,17 +709,19 @@ class IfcImporter:
            mat = np.array(
                ([m[0], m[3], m[6], m[9]], [m[1], m[4], m[7], m[10]], [m[2], m[5], m[8], m[11]], [0, 0, 0, 1])
            )
-            point = np.array(
+            point = mat @ np.array(
                (
-                    shape.geometry.verts[0] / self.unit_scale,
-                    shape.geometry.verts[1] / self.unit_scale,
-                    shape.geometry.verts[2] / self.unit_scale,
+                    shape.geometry.verts[0],
+                    shape.geometry.verts[1],
+                    shape.geometry.verts[2],
                    0.0,
                )
            )
-            return mat @ point
+            point = point / self.unit_scale
+            if self.is_point_far_away(point, is_meters=False):
+                return point

-    def does_element_likely_have_geometry_far_away(self, element):
+    def does_element_likely_have_geometry_far_away(self, element: ifcopenshell.entity_instance) -> bool:
        for representation in element.Representation.Representations:
            items = []
            for item in representation.Items:
@@ -700,13 +738,14 @@ class IfcImporter:
                    if subelement.is_a("IfcCartesianPoint"):
                        if len(subelement.Coordinates) == 3 and self.is_point_far_away(subelement, is_meters=False):
                            return True
+        return False

-    def apply_blender_offset_to_matrix_world(self, obj, matrix):
+    def apply_blender_offset_to_matrix_world(self, obj: bpy.types.Object, matrix: np.ndarray) -> mathutils.Matrix:
        props = bpy.context.scene.BIMGeoreferenceProperties
        if props.has_blender_offset:
            if obj.data and obj.data.get("has_cartesian_point_offset", None):
                obj.BIMObjectProperties.blender_offset_type = "CARTESIAN_POINT"
-            elif self.is_point_far_away((matrix[0, 3], matrix[1, 3], matrix[2, 3])):
+            elif self.is_point_far_away((matrix[:3, 3])):
                obj.BIMObjectProperties.blender_offset_type = "OBJECT_PLACEMENT"
                matrix = ifcopenshell.util.geolocation.global2local(
                    matrix,
@@ -719,7 +758,9 @@ class IfcImporter:

        return mathutils.Matrix(matrix.tolist())

-    def find_decomposed_ifc_class(self, element, ifc_class):
+    def find_decomposed_ifc_class(
+        self, element: ifcopenshell.entity_instance, ifc_class: str
+    ) -> Union[ifcopenshell.entity_instance, None]:
        if element.is_a(ifc_class):
            return element
        rel_aggregates = element.IsDecomposedBy
@@ -775,7 +816,7 @@ class IfcImporter:
                continue
            self.create_element_type(element_type)

-    def create_element_type(self, element):
+    def create_element_type(self, element: ifcopenshell.entity_instance) -> None:
        self.ifc_import_settings.logger.info("Creating object %s", element)
        mesh = None
        if self.ifc_import_settings.should_load_geometry:
@@ -832,17 +873,22 @@ class IfcImporter:
            self.create_product(element, mesh=mesh)
        print("Done creating geometry")

-    def create_spatial_elements(self):
-        self.create_generic_elements(self.spatial_elements)
+    def create_spatial_elements(self) -> None:
+        if bpy.context.preferences.addons["blenderbim"].preferences.spatial_elements_unselectable:
+            self.create_generic_elements(self.spatial_elements, unselectable=True)
+        else:
+            self.create_generic_elements(self.spatial_elements, unselectable=False)

-    def create_elements(self):
+    def create_elements(self) -> None:
        self.create_generic_elements(self.elements)
        tmp = self.context_settings
        self.context_settings = self.gross_context_settings
        self.create_generic_elements(self.gross_elements)
        self.context_settings = tmp

-    def create_generic_shape(self, element):
+    def create_generic_shape(
+        self, element: ifcopenshell.entity_instance
+    ) -> Union[ifcopenshell_wrapper.TriangulationElement, None]:
        for settings in self.context_settings:
            try:
                result = ifcopenshell.geom.create_shape(settings, element)
@@ -851,7 +897,7 @@ class IfcImporter:
            except:
                pass

-    def create_generic_elements(self, elements):
+    def create_generic_elements(self, elements: set[ifcopenshell.entity_instance], unselectable=False) -> None:
        if isinstance(self.file, ifcopenshell.sqlite):
            return self.create_generic_sqlite_elements(elements)

@@ -865,12 +911,17 @@ class IfcImporter:
            elements -= products

        total = len(elements)
+        objects = set()
        for i, element in enumerate(elements):
            if i % 250 == 0:
                print("{} / {} elements processed ...".format(i, total))
-            self.create_product(element)
+            objects.add(self.create_product(element))

-    def create_generic_sqlite_elements(self, elements):
+        if unselectable:
+            for obj in objects:
+                obj.hide_select = True
+
+    def create_generic_sqlite_elements(self, elements: set[ifcopenshell.entity_instance]) -> None:
        self.geometry_cache = self.file.get_geometry([e.id() for e in elements])
        for geometry_id, geometry in self.geometry_cache["geometry"].items():
            mesh_name = tool.Loader.get_mesh_name(type("Geometry", (), {"id": geometry_id}))
@@ -917,7 +968,11 @@ class IfcImporter:
                mesh = self.meshes.get(mesh_name)
            self.create_product(element, mesh=mesh)

-    def create_products(self, products, settings=None):
+    def create_products(
+        self,
+        products: set[ifcopenshell.entity_instance],
+        settings: Optional[ifcopenshell.geom.main.settings] = None,
+    ) -> set[ifcopenshell.entity_instance]:
        results = set()
        if not products:
            return results
@@ -1040,7 +1095,7 @@ class IfcImporter:
                        return mapped_representation
        return None

-    def create_pointclouds(self, products):
+    def create_pointclouds(self, products: set[ifcopenshell.entity_instance]) -> set[ifcopenshell.entity_instance]:
        result = set()
        for product in products:
            representation = self.get_pointcloud_representation(product)
@@ -1051,7 +1106,9 @@ class IfcImporter:

        return result

-    def create_pointcloud(self, product, representation):
+    def create_pointcloud(
+        self, product: ifcopenshell.entity_instance, representation: ifcopenshell.entity_instance
+    ) -> Union[ifcopenshell.entity_instance, None]:
        placement_matrix = self.get_element_matrix(product)
        vertex_list = []
        for item in representation.Items:
@@ -1079,7 +1136,12 @@ class IfcImporter:
        self.link_element(product, obj)
        return product

-    def create_product(self, element, shape=None, mesh=None):
+    def create_product(
+        self,
+        element: ifcopenshell.entity_instance,
+        shape: Optional[Any] = None,
+        mesh: Optional[OBJECT_DATA_TYPE] = None,
+    ) -> Union[bpy.types.Object, None]:
        if element is None:
            return

@@ -1124,6 +1186,9 @@ class IfcImporter:

        return obj

+    def load_existing_meshes(self) -> None:
+        self.meshes.update({m.name: m for m in bpy.data.meshes})
+
    def get_representation_item_material_name(self, item):
        if not item.StyledByItem:
            return
@@ -1445,7 +1510,10 @@ class IfcImporter:
            # Occurs when reloading a project
            pass
        project_collection = bpy.context.view_layer.layer_collection.children[self.project["blender"].name]
-        project_collection.children[self.type_collection.name].hide_viewport = True
+        types_collection = project_collection.children[self.type_collection.name]
+        types_collection.hide_viewport = False
+        for obj in types_collection.collection.objects:  # turn off all objects inside Types collection.
+            obj.hide_set(True)

    def clean_mesh(self):
        obj = None
@@ -1530,18 +1598,19 @@ class IfcImporter:
            "{}/{}".format(self.project["ifc"].is_a(), self.project["ifc"].Name)
        )
        obj = self.create_product(self.project["ifc"])
+        obj.hide_select = True
        self.project["blender"].objects.link(obj)
        self.project["blender"].BIMCollectionProperties.obj = obj
        obj.BIMObjectProperties.collection = self.collections[project.GlobalId] = self.project["blender"]

-    def create_collections(self):
+    def create_collections(self) -> None:
        self.create_spatial_decomposition_collections()
        if self.ifc_import_settings.collection_mode == "DECOMPOSITION":
            self.create_aggregate_and_nest_collections()
        elif self.ifc_import_settings.collection_mode == "SPATIAL_DECOMPOSITION":
            pass

-    def create_spatial_decomposition_collections(self):
+    def create_spatial_decomposition_collections(self) -> None:
        for rel_aggregate in self.project["ifc"].IsDecomposedBy or []:
            self.create_spatial_decomposition_collection(self.project["blender"], rel_aggregate.RelatedObjects)

@@ -1554,7 +1623,9 @@ class IfcImporter:
        tool.Loader.create_project_collection("Views")
        self.type_collection = tool.Loader.create_project_collection("Types")

-    def create_spatial_decomposition_collection(self, parent, related_objects):
+    def create_spatial_decomposition_collection(
+        self, parent: Union[bpy.types.Collection, bpy.types.Object], related_objects: list[ifcopenshell.entity_instance]
+    ) -> None:
        for element in related_objects:
            if element not in self.spatial_elements:
                continue
@@ -1577,26 +1648,34 @@ class IfcImporter:
        if self.ifc_import_settings.has_filter:
            rel_aggregates = set()
            for element in self.elements:
-                if element.IsDecomposedBy:
-                    rel_aggregates.add(element.IsDecomposedBy[0])
-                elif element.Decomposes:
-                    rel_aggregates.add(element.Decomposes[0])
-                elif getattr(element, "IsNestedBy", []):  # IFC2X3 does not have IsNestedBy
-                    if [e for e in element.IsNestedBy[0].RelatedObjects if not e.is_a("IfcPort")]:
-                        rel_aggregates.add(element.IsNestedBy[0])
-                elif getattr(element, "Nests", []):
-                    rel_aggregates.add(element.Nests[0])
+                if decomposed_by := element.IsDecomposedBy:
+                    rel_aggregates.add(decomposed_by[0])
+                elif decomposes := element.Decomposes:
+                    rel_aggregates.add(decomposes[0])
+                elif nested_by := getattr(element, "IsNestedBy", []):  # IFC2X3 does not have IsNestedBy
+                    if next((e for e in nested_by[0].RelatedObjects if not e.is_a("IfcPort")), None):
+                        rel_aggregates.add(nested_by[0])
+                elif nests := getattr(element, "Nests", []):
+                    rel_aggregates.add(nests[0])
+                elif element.is_a("IfcSurfaceFeature") and self.file.schema == "IFC4X3":
+                    rel_aggregates.add(element.AdheresToElement[0])
        else:
            rel_aggregates = [
                r
                for r in self.file.by_type("IfcRelAggregates")
-                if r.RelatingObject.is_a("IfcElement") or r.RelatingObject.is_a("IfcElementType")
+                if (relating_obj := r.RelatingObject).is_a("IfcElement") or relating_obj.is_a("IfcElementType")
            ] + [
                r
                for r in self.file.by_type("IfcRelNests")
-                if (r.RelatingObject.is_a("IfcElement") or r.RelatingObject.is_a("IfcElementType"))
+                if (
+                    (relating_obj := r.RelatingObject).is_a("IfcElement")
+                    or relating_obj.is_a("IfcElementType")
+                    or (relating_obj.is_a("IfcPositioningElement") and not relating_obj.is_a("IfcGrid"))
+                )
                and [e for e in r.RelatedObjects if not e.is_a("IfcPort")]
            ]
+            if self.file.schema == "IFC4X3":
+                rel_aggregates += [r for r in self.file.by_type("IfcRelAdheresToElement")]

        if len(rel_aggregates) > 10000:
            # More than 10,000 collections makes Blender unhappy
@@ -1604,9 +1683,11 @@ class IfcImporter:
            self.ifc_import_settings.collection_mode = "SPATIAL_DECOMPOSITION"
            return

-        aggregates = {}
+        aggregates: dict[str, dict] = {}
        for rel_aggregate in rel_aggregates:
-            element = rel_aggregate.RelatingObject
+            element: ifcopenshell.entity_instance = getattr(rel_aggregate, "RelatingObject", None) or getattr(
+                rel_aggregate, "RelatingElement"
+            )
            collection = bpy.data.collections.new(tool.Loader.get_name(element))
            aggregates[element.GlobalId] = {"element": element, "collection": collection}
            self.collections[element.GlobalId] = collection
@@ -1623,19 +1704,20 @@ class IfcImporter:
            if aggregate["element"].is_a("IfcElementType"):
                self.type_collection.children.link(aggregate["collection"])
                continue
+            self.project["blender"].children.link(aggregate["collection"])

-    def create_materials(self):
+    def create_materials(self) -> None:
        for material in self.file.by_type("IfcMaterial"):
            self.create_material(material)

-    def create_material(self, material):
+    def create_material(self, material: ifcopenshell.entity_instance) -> bpy.types.Material:
        blender_material = bpy.data.materials.new(material.Name)
        self.link_element(material, blender_material)
        self.material_creator.materials[material.id()] = blender_material
        blender_material.use_fake_user = True
        return blender_material

-    def create_styles(self):
+    def create_styles(self) -> None:
        parsed_styles = set()

        for material_definition_representation in self.file.by_type("IfcMaterialDefinitionRepresentation"):
@@ -1658,7 +1740,9 @@ class IfcImporter:
                continue
            self.create_style(style)

-    def create_style(self, style, blender_material=None):
+    def create_style(
+        self, style: ifcopenshell.entity_instance, blender_material: Optional[bpy.types.Material] = None
+    ) -> None:
        if not blender_material:
            name = style.Name or str(style.id())
            blender_material = bpy.data.materials.new(name)
@@ -1675,18 +1759,20 @@ class IfcImporter:
        else:
            blender_material.BIMStyleProperties.active_style_type = "Shading"

-    def place_objects_in_collections(self):
+    def place_objects_in_collections(self) -> None:
        for ifc_definition_id, obj in self.added_data.items():
            if isinstance(obj, bpy.types.Object):
                self.place_object_in_collection(self.file.by_id(ifc_definition_id), obj)

-    def place_object_in_collection(self, element, obj):
+    def place_object_in_collection(self, element: ifcopenshell.entity_instance, obj: bpy.types.Object) -> None:
        if self.ifc_import_settings.collection_mode == "DECOMPOSITION":
            self.place_object_in_decomposition_collection(element, obj)
        elif self.ifc_import_settings.collection_mode == "SPATIAL_DECOMPOSITION":
            self.place_object_in_spatial_decomposition_collection(element, obj)

-    def place_object_in_decomposition_collection(self, element, obj):
+    def place_object_in_decomposition_collection(
+        self, element: ifcopenshell.entity_instance, obj: bpy.types.Object
+    ) -> None:
        if element.is_a("IfcProject"):
            return
        elif element.is_a("IfcGridAxis"):
@@ -1703,10 +1789,15 @@ class IfcImporter:
        elif getattr(element, "Nests", None) and not element.is_a("IfcPort"):
            nest = ifcopenshell.util.element.get_nest(element)
            return self.collections[nest.GlobalId].objects.link(obj)
-        else:
-            return self.place_object_in_spatial_decomposition_collection(element, obj)
+        elif element.is_a("IfcSurfaceFeature") and self.file.schema == "IFC4X3":
+            adherend = element.AdheresToElement[0].RelatingElement
+            return self.collections[adherend.GlobalId].objects.link(obj)

-    def place_object_in_spatial_decomposition_collection(self, element, obj):
+        return self.place_object_in_spatial_decomposition_collection(element, obj)
+
+    def place_object_in_spatial_decomposition_collection(
+        self, element: ifcopenshell.entity_instance, obj: bpy.types.Object
+    ) -> None:
        if element.is_a("IfcProject"):
            return
        elif element.is_a("IfcGridAxis"):
@@ -1750,7 +1841,7 @@ class IfcImporter:
            if rel.is_a("IfcRelAssignsToGroup") and rel.RelatingGroup.ObjectType == "DRAWING":
                return rel.RelatingGroup

-    def get_element_matrix(self, element):
+    def get_element_matrix(self, element: ifcopenshell.entity_instance) -> np.ndarray:
        if isinstance(element, ifcopenshell.sqlite_entity):
            result = self.geometry_cache["shapes"][element.id()]["matrix"]
        else:
@@ -1760,7 +1851,7 @@ class IfcImporter:
        result[2][3] *= self.unit_scale
        return result

-    def scale_matrix(self, matrix):
+    def scale_matrix(self, matrix: np.array) -> np.array:
        matrix[0][3] *= self.unit_scale
        matrix[1][3] *= self.unit_scale
        matrix[2][3] *= self.unit_scale
@@ -1792,7 +1883,7 @@ class IfcImporter:
            ):
                return representation.Items[0].MappingTarget

-    def create_curve(self, element, shape):
+    def create_curve(self, element: ifcopenshell.entity_instance, shape) -> bpy.types.Curve:
        if hasattr(shape, "geometry"):
            geometry = shape.geometry
        else:
@@ -1817,12 +1908,13 @@ class IfcImporter:
            polyline.points[-1].co = mathutils.Vector(v2)
        return curve

-    def create_mesh(self, element, shape):
+    def create_mesh(self, element: ifcopenshell.entity_instance, shape) -> bpy.types.Mesh:
        try:
            if hasattr(shape, "geometry"):
-                geometry = shape.geometry
+                # shape is ifcopenshell_wrapper.TriangulationElement
+                geometry: ifcopenshell_wrapper.Triangulation = shape.geometry
            else:
-                geometry = shape
+                geometry: ifcopenshell_wrapper.Triangulation = shape

            mesh = bpy.data.meshes.new(tool.Loader.get_mesh_name(geometry))

@@ -1832,11 +1924,7 @@ class IfcImporter:
                and geometry.verts
                and self.is_point_far_away((geometry.verts[0], geometry.verts[1], geometry.verts[2]))
            ):
-                m = shape.transformation.matrix.data
-                mat = np.array(
-                    ([m[0], m[3], m[6], m[9]], [m[1], m[4], m[7], m[10]], [m[2], m[5], m[8], m[11]], [0, 0, 0, 1])
-                )
-                offset_point = np.linalg.inv(mat) @ np.array(
+                offset_point = np.array(
                    (
                        float(props.blender_eastings),
                        float(props.blender_northings),
@@ -1844,8 +1932,15 @@ class IfcImporter:
                        0.0,
                    )
                )
+                if geometry != shape:
+                    m = shape.transformation.matrix.data
+                    mat = np.array(
+                        ([m[0], m[3], m[6], m[9]], [m[1], m[4], m[7], m[10]], [m[2], m[5], m[8], m[11]], [0, 0, 0, 1])
+                    )
+                    offset_point = np.linalg.inv(mat) @ offset_point
                verts = [None] * len(geometry.verts)
                for i in range(0, len(geometry.verts), 3):
+                    # Note: this enh2xyz call is crazy slow.
                    verts[i], verts[i + 1], verts[i + 2] = ifcopenshell.util.geolocation.enh2xyz(
                        geometry.verts[i],
                        geometry.verts[i + 1],
@@ -1871,7 +1966,9 @@ class IfcImporter:

                # See bug 3546
                # ios_edges holds true edges that aren't triangulated.
-                mesh["ios_edges"] = list(set(tuple(e) for e in ifcopenshell.util.shape.get_edges(geometry)))
+                #
+                # we do `.tolist()` because Blender can't assign `np.int32` to it's custom attributes
+                mesh["ios_edges"] = list(set(tuple(e) for e in ifcopenshell.util.shape.get_edges(geometry).tolist()))

                mesh.vertices.add(num_vertices)
                mesh.vertices.foreach_set("co", verts)
@@ -1898,14 +1995,14 @@ class IfcImporter:

            print(traceback.format_exc())

-    def a2p(self, o, z, x):
+    def a2p(self, o: mathutils.Vector, z: mathutils.Vector, x: mathutils.Vector) -> mathutils.Matrix:
        y = z.cross(x)
        r = mathutils.Matrix((x, y, z, o))
        r.resize_4x4()
        r.transpose()
        return r

-    def get_axis2placement(self, plc):
+    def get_axis2placement(self, plc: ifcopenshell.entity_instance) -> mathutils.Matrix:
        if plc.is_a("IfcAxis2Placement3D"):
            z = mathutils.Vector(plc.Axis.DirectionRatios if plc.Axis else (0, 0, 1))
            x = mathutils.Vector(plc.RefDirection.DirectionRatios if plc.RefDirection else (1, 0, 0))
@@ -1925,7 +2022,7 @@ class IfcImporter:
        o = plc.LocalOrigin.Coordinates
        return self.a2p(o, z, x)

-    def get_local_placement(self, plc):
+    def get_local_placement(self, plc: Optional[ifcopenshell.entity_instance] = None) -> mathutils.Matrix:
        if plc is None:
            return mathutils.Matrix()
        if plc.PlacementRelTo is None:
@@ -1940,11 +2037,11 @@ class IfcImporter:
                bpy.context.scene.BIMRootProperties.contexts = str(subcontext.id())
                break

-    def link_element(self, element, obj):
+    def link_element(self, element: ifcopenshell.entity_instance, obj: IFC_CONNECTED_TYPE) -> None:
        self.added_data[element.id()] = obj
        tool.Ifc.link(element, obj)

-    def set_matrix_world(self, obj, matrix_world):
+    def set_matrix_world(self, obj: bpy.types.Object, matrix_world: mathutils.Matrix) -> None:
        obj.matrix_world = matrix_world
        tool.Geometry.record_object_position(obj)

@@ -1967,7 +2064,7 @@ class IfcImporter:

 class IfcImportSettings:
    def __init__(self):
-        self.logger = None
+        self.logger: logging.Logger = None
        self.input_file = None
        self.diff_file = None
        self.should_use_cpu_multiprocessing = True
@@ -1988,7 +2085,7 @@ class IfcImportSettings:
        self.has_filter = None
        self.should_filter_spatial_elements = True
        self.should_setup_viewport_camera = True
-        self.elements = set()
+        self.elements: set[ifcopenshell.entity_instance] = set()
        self.collection_mode = "DECOMPOSITION"

    @staticmethod
@@ -28,8 +28,11 @@ classes = (
    operator.BIM_OT_select_aggregate,
    operator.BIM_OT_select_parts,
    operator.BIM_OT_aggregate_unassign_object,
+    operator.BIM_OT_break_link_to_other_aggregates,
+    operator.BIM_OT_select_linked_aggregates,
    prop.BIMObjectAggregateProperties,
    ui.BIM_PT_aggregate,
+    ui.BIM_PT_linked_aggregate,
 )


@@ -36,7 +36,7 @@ class AggregateData:
            "relating_object_label": cls.get_relating_object_label(),
            "has_related_objects": cls.has_related_objects(),
            "total_parts": cls.total_parts(),
-            "ifc_class": cls.ifc_class(),
+            "total_linked_aggregate": cls.total_linked_aggregate(),
        }
        cls.is_loaded = True

@@ -68,7 +68,24 @@ class AggregateData:
        return bool(cls.get_related_objects())

    @classmethod
-    def ifc_class(cls) -> str:
+    def total_linked_aggregate(cls):
        element = tool.Ifc.get_entity(bpy.context.active_object)
-        if element:
-            return element.is_a()
+        aggregate = ifcopenshell.util.element.get_aggregate(element)
+        if not aggregate:
+            return []
+        if not element:
+            return []
+        
+        product_linked_agg_group = [
+            r
+            for r in getattr(aggregate, "HasAssignments", []) or []
+            if r.is_a("IfcRelAssignsToGroup")
+            if "BBIM_Linked_Aggregate" in r.RelatingGroup.Name
+        ]
+
+        if not product_linked_agg_group:
+            return []
+        
+        total = len(product_linked_agg_group[0].RelatedObjects)
+        return total
+        
@@ -40,31 +40,39 @@ class BIM_OT_aggregate_assign_object(bpy.types.Operator, Operator):
    bl_label = "Assign Object To Aggregation"
    bl_options = {"REGISTER", "UNDO"}
    relating_object: bpy.props.IntProperty()
+    related_object: bpy.props.IntProperty()

    def _execute(self, context):
        relating_obj = None
        if self.relating_object:
            relating_obj = tool.Ifc.get_object(tool.Ifc.get().by_id(self.relating_object))
+        elif self.related_object:
+            aggregate = ifcopenshell.util.element.get_aggregate(tool.Ifc.get().by_id(self.related_object))
+            if aggregate:
+                relating_obj = tool.Ifc.get_object(aggregate)
        elif context.active_object:
            relating_obj = context.active_object
        if not relating_obj:
            return

-        for obj in bpy.context.selected_objects:
+        for obj in tool.Blender.get_selected_objects():
            if obj == relating_obj:
                continue
            element = tool.Ifc.get_entity(obj)
            if not element:
                continue
-            result = core.assign_object(
-                tool.Ifc,
-                tool.Aggregate,
-                tool.Collector,
-                relating_obj=relating_obj,
-                related_obj=obj,
-            )
-            if not result:
-                self.report({"ERROR"}, f" Cannot aggregate {obj.name} to {relating_obj.name}")
+            try:
+                core.assign_object(
+                    tool.Ifc,
+                    tool.Aggregate,
+                    tool.Collector,
+                    relating_obj=relating_obj,
+                    related_obj=obj,
+                )
+            except core.IncompatibleAggregateError:
+                self.report({"ERROR"}, f"Cannot aggregate {obj.name} to {relating_obj.name}")
+            except core.AggregateRepresentationError:
+                self.report({"ERROR"}, f"Cannot aggregate to {relating_obj.name} with a body representation")


 class BIM_OT_aggregate_unassign_object(bpy.types.Operator, Operator):
@@ -90,7 +98,14 @@ class BIM_OT_aggregate_unassign_object(bpy.types.Operator, Operator):
                related_obj=tool.Ifc.get_object(element),
            )

+            # Removes Pset related to Linked Aggregates
+            if not element.is_a('IfcElementAssembly'):
+                pset = ifcopenshell.util.element.get_pset(element, 'BBIM_Linked_Aggregate')
+                if pset:
+                    pset = tool.Ifc.get().by_id(pset["id"])
+                    ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)

+              
 class BIM_OT_enable_editing_aggregate(bpy.types.Operator, Operator):
    """Enable editing aggregation relationship"""

@@ -121,6 +136,7 @@ class BIM_OT_add_aggregate(bpy.types.Operator, tool.Ifc.Operator):
    bl_options = {"REGISTER", "UNDO"}
    obj: bpy.props.StringProperty()
    ifc_class: bpy.props.StringProperty(name="IFC Class", default="IfcElementAssembly")
+    aggregate_name: bpy.props.StringProperty(name="Name", default="Default_Name")

    def invoke(self, context, event):
        return context.window_manager.invoke_props_dialog(self)
@@ -128,13 +144,15 @@ class BIM_OT_add_aggregate(bpy.types.Operator, tool.Ifc.Operator):
    def draw(self, context):
        row = self.layout
        row.prop(self, "ifc_class")
+        row = self.layout
+        row.prop(self, "aggregate_name")

    def _execute(self, context):
        try:
            ifc_class = tool.Ifc.schema().declaration_by_name(self.ifc_class).name()
        except:
            return
-        aggregate = self.create_aggregate(context, ifc_class)
+        aggregate = self.create_aggregate(context, ifc_class, self.aggregate_name)

        for obj in context.selected_objects:
            element = tool.Ifc.get_entity(obj)
@@ -162,8 +180,8 @@ class BIM_OT_add_aggregate(bpy.types.Operator, tool.Ifc.Operator):
                )
            core.assign_object(tool.Ifc, tool.Aggregate, tool.Collector, relating_obj=aggregate, related_obj=obj)

-    def create_aggregate(self, context, ifc_class):
-        aggregate = bpy.data.objects.new("Assembly", None)
+    def create_aggregate(self, context, ifc_class, aggregate_name):
+        aggregate = bpy.data.objects.new(aggregate_name, None)
        aggregate.location = context.scene.cursor.location
        bpy.ops.bim.assign_class(obj=aggregate.name, ifc_class=ifc_class)
        return aggregate
@@ -179,12 +197,17 @@ class BIM_OT_select_parts(bpy.types.Operator):

    def execute(self, context):
        self.file = IfcStore.get_file()
-        obj = bpy.data.objects.get(self.obj) or context.active_object
-        parts = ifcopenshell.util.element.get_parts(tool.Ifc.get_entity(obj))
-        parts_objs = set(tool.Ifc.get_object(part) for part in parts)
-        selectable_parts_objs = set(context.selectable_objects).intersection(parts_objs)
-        for selectable_part_obj in selectable_parts_objs:
-            selectable_part_obj.select_set(True)
+        # obj = bpy.data.objects.get(self.obj) or context.active_object
+
+        for obj in context.selected_objects:
+            parts = ifcopenshell.util.element.get_parts(tool.Ifc.get_entity(obj))
+            if parts:
+                parts_objs = set(tool.Ifc.get_object(part) for part in parts)
+                selectable_parts_objs = set(context.selectable_objects).intersection(parts_objs)
+                for selectable_part_obj in selectable_parts_objs:
+                    selectable_part_obj.select_set(True)
+            else:
+                obj.select_set(False)
        return {"FINISHED"}


@@ -195,15 +218,54 @@ class BIM_OT_select_aggregate(bpy.types.Operator):
    bl_label = "Select Aggregate"
    bl_options = {"REGISTER", "UNDO"}
    obj: bpy.props.StringProperty()
+    select_parts: bpy.props.BoolProperty(default=False)
+
+    @classmethod
+    def description(cls, context, properties):
+        if properties.select_parts:
+            return "Select Aggregate and Parts"
+        else:
+            return "Select Aggregate"

    def execute(self, context):
        self.file = IfcStore.get_file()
-        obj = bpy.data.objects.get(self.obj) or context.active_object
-        aggregate = ifcopenshell.util.element.get_aggregate(tool.Ifc.get_entity(obj))
-        aggregate_obj = tool.Ifc.get_object(aggregate)
-        if aggregate_obj in context.selectable_objects:
-            aggregate_obj.select_set(True)
-            bpy.context.view_layer.objects.active = aggregate_obj
+
+        # obj = bpy.data.objects.get(self.obj) or context.active_object
+        # aggregate = ifcopenshell.util.element.get_aggregate(tool.Ifc.get_entity(obj))
+        # aggregate_obj = tool.Ifc.get_object(aggregate)
+        
+        all_parts = []
+        for obj in context.selected_objects:
+            element = tool.Ifc.get_entity(obj)
+            if element:
+                aggregate = ifcopenshell.util.element.get_aggregate(element)
+                if aggregate:
+                    all_parts.append(aggregate)
+                    obj.select_set(False)
+                else:
+                    pass
+            if not element:
+                obj.select_set(False)
+        
+        if self.select_parts:
+            all_objs = []
+            for part in all_parts:
+                if part.IsDecomposedBy:
+                    for subpart in part.IsDecomposedBy[0].RelatedObjects:
+                        all_parts.append(subpart)
+                all_objs.append(part)
+
+            for element in all_objs:
+                obj = tool.Ifc.get_object(element)
+                if obj:
+                    obj.select_set(True)
+
+        else:
+            for aggregate_element in all_parts:
+                aggregate_obj = tool.Ifc.get_object(aggregate_element)
+                aggregate_obj.select_set(True)
+                bpy.context.view_layer.objects.active = aggregate_obj      
+
        return {"FINISHED"}


@@ -213,20 +275,105 @@ class BIM_OT_add_part_to_object(bpy.types.Operator, Operator):
    bl_options = {"REGISTER", "UNDO"}
    part_class: bpy.props.StringProperty(name="Class", options={"HIDDEN"})
    part_name: bpy.props.StringProperty(name="Name")
-    obj: bpy.props.StringProperty(options={"HIDDEN"})
+    element: bpy.props.IntProperty(options={"HIDDEN"})

    def invoke(self, context, event):
        self.part_name = "My " + self.part_class.lstrip("Ifc")
        return context.window_manager.invoke_props_dialog(self)

    def _execute(self, context):
-        obj = bpy.data.objects.get(self.obj) or context.active_object
        core.add_part_to_object(
            tool.Ifc,
            tool.Aggregate,
            tool.Collector,
            tool.Blender,
-            obj=obj,
+            obj=tool.Ifc.get_object(tool.Ifc.get().by_id(self.element)) if self.element else context.active_object,
            part_class=self.part_class,
            part_name=self.part_name,
        )
+        tool.Spatial.load_container_manager()
+
+
+class BIM_OT_break_link_to_other_aggregates(bpy.types.Operator, Operator):
+    bl_idname = "bim.break_link_to_other_aggregates"
+    bl_label = "Break link to other aggregates"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        aggregate = ifcopenshell.util.element.get_aggregate(element)
+        if not aggregate:
+            return []
+        if not element:
+            return []
+
+        parts = ifcopenshell.util.element.get_parts(aggregate)
+
+        for part in parts:
+            pset = ifcopenshell.util.element.get_pset(part, "BBIM_Linked_Aggregate")
+            pset = tool.Ifc.get().by_id(pset["id"])
+            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+
+        linked_aggregate_group = [
+            r.RelatingGroup
+            for r in getattr(aggregate, "HasAssignments", []) or []
+            if r.is_a("IfcRelAssignsToGroup")
+            if "BBIM_Linked_Aggregate" in r.RelatingGroup.Name
+        ]
+        tool.Ifc.run("group.unassign_group", group=linked_aggregate_group[0], products=[aggregate])
+
+        return {"FINISHED"}
+
+
+class BIM_OT_select_linked_aggregates(bpy.types.Operator, Operator):
+    bl_idname = "bim.select_linked_aggregates"
+    bl_label = "Select linked aggregates"
+    bl_options = {"REGISTER", "UNDO"}
+    select_parts: bpy.props.BoolProperty(default=False)
+
+    @classmethod
+    def description(cls, context, properties):
+        if properties.select_parts:
+            return "Select all aggregates, subaggregates and all their parts"
+        else:
+            return "Select all aggregates"
+
+    def _execute(self, context):
+        
+        for obj in context.selected_objects:
+            obj.select_set(False)
+            element = tool.Ifc.get_entity(obj)
+            aggregate = ifcopenshell.util.element.get_aggregate(element)
+            if not aggregate:
+                continue
+            if not element:
+                continue
+
+            linked_aggregate_group = [
+                r.RelatingGroup
+                for r in getattr(aggregate, "HasAssignments", []) or []
+                if r.is_a("IfcRelAssignsToGroup")
+                if "BBIM_Linked_Aggregate" in r.RelatingGroup.Name
+            ]
+
+            group_rel = linked_aggregate_group[0].IsGroupedBy or []
+            for group_link in group_rel:
+                parts = list(group_link.RelatedObjects)
+                if self.select_parts:
+                    parts_objs = []
+                    for part in parts:
+                        if part.IsDecomposedBy:
+                            for subpart in part.IsDecomposedBy[0].RelatedObjects:
+                                parts.append(subpart)
+                        parts_objs.append(part)
+
+                    for element in parts_objs:
+                        obj = tool.Ifc.get_object(element)
+                        if obj:
+                            obj.select_set(True)
+                else:
+                    for element in parts:
+                        obj = tool.Ifc.get_object(element)
+                        obj.select_set(True)
+
+        return {"FINISHED"}
@@ -34,15 +34,27 @@ from bpy.props import (

 def update_relating_object(self, context):
    def message(self, context):
-        self.layout.label(text="Please select a valid Ifc Element")
+        self.layout.label(text="Please select a valid IFC Element")

-    if self.relating_object is None:
-        return
-    if not self.relating_object.BIMObjectProperties.ifc_definition_id:
-        context.window_manager.popup_menu(message, title="Invalid Element Selected", icon="INFO")
+    if self.relating_object:
+        self.related_object = None
+        if not self.relating_object.BIMObjectProperties.ifc_definition_id:
+            context.window_manager.popup_menu(message, title="Invalid Element Selected", icon="INFO")
+            self.relating_object = None
+
+
+def update_related_object(self, context):
+    def message(self, context):
+        self.layout.label(text="Please select a valid IFC Element")
+
+    if self.related_object:
        self.relating_object = None
+        if not self.related_object.BIMObjectProperties.ifc_definition_id:
+            context.window_manager.popup_menu(message, title="Invalid Element Selected", icon="INFO")
+            self.related_object = None


 class BIMObjectAggregateProperties(PropertyGroup):
    is_editing: BoolProperty(name="Is Editing")
-    relating_object: PointerProperty(name="Aggregate", type=bpy.types.Object, update=update_relating_object)
+    relating_object: PointerProperty(name="Relating Whole", type=bpy.types.Object, update=update_relating_object)
+    related_object: PointerProperty(name="Related Part", type=bpy.types.Object, update=update_related_object)
@@ -18,7 +18,9 @@

 from bpy.types import Panel
 from blenderbim.bim.module.aggregate.data import AggregateData
+from blenderbim.bim.module.group.data import GroupsData, ObjectGroupsData
 from blenderbim.bim.ifc import IfcStore
+import blenderbim.tool as tool


 class BIM_PT_aggregate(Panel):
@@ -51,23 +53,36 @@ class BIM_PT_aggregate(Panel):
        props = context.active_object.BIMObjectAggregateProperties

        if props.is_editing:
+            row = layout.row()
+            row.prop(props, "relating_object", text="Whole")
+            row = layout.row()
+            row.prop(props, "related_object", text="Or Part")
            row = layout.row(align=True)
-            row.prop(props, "relating_object", text="")
+            col = row.column(align=True)
+            if not props.relating_object and not props.related_object:
+                col.enabled = False
+            op = col.operator("bim.aggregate_assign_object", icon="CHECKMARK")
            if props.relating_object:
-                op = row.operator("bim.aggregate_assign_object", icon="CHECKMARK", text="")
                op.relating_object = props.relating_object.BIMObjectProperties.ifc_definition_id
+            elif props.related_object:
+                op.related_object = props.related_object.BIMObjectProperties.ifc_definition_id
            row.operator("bim.disable_editing_aggregate", icon="CANCEL", text="")
+            return
        else:
            row = layout.row(align=True)
            if AggregateData.data["has_relating_object"]:
                row.label(text=AggregateData.data["relating_object_label"], icon="TRIA_UP")
+                op = row.operator("bim.select_aggregate", icon="OBJECT_DATA", text="")
+                op.obj = context.active_object.name
+                op.select_parts = False
                op = row.operator("bim.select_aggregate", icon="RESTRICT_SELECT_OFF", text="")
                op.obj = context.active_object.name
+                op.select_parts = True
                row.operator("bim.enable_editing_aggregate", icon="GREASEPENCIL", text="")
                row.operator("bim.add_aggregate", icon="ADD", text="")
                op = row.operator("bim.aggregate_unassign_object", icon="X", text="")
            else:
-                row.label(text="No Aggregate", icon="TRIA_UP")
+                row.label(text="No Whole Relationship Found", icon="TRIA_UP")
                row.operator("bim.enable_editing_aggregate", icon="GREASEPENCIL", text="")
                row.operator("bim.add_aggregate", icon="ADD", text="")

@@ -84,15 +99,58 @@ class BIM_PT_aggregate(Panel):
            op = row.operator("bim.select_parts", icon="RESTRICT_SELECT_OFF", text="")
            op.obj = context.active_object.name

-        ifc_class = AggregateData.data["ifc_class"]
-        part_class = ""
-        if ifc_class == "IfcBuilding":
-            part_class = "IfcBuildingStorey"
-        elif ifc_class == "IfcSite":
-            part_class = "IfcBuilding"
-        elif ifc_class == "IfcProject":
-            part_class = "IfcSite"
-        if part_class != "":
-            op = layout.operator("bim.add_part_to_object", text="Add " + part_class.lstrip("Ifc"))
-            op.part_class = part_class
-            op.obj = context.active_object.name
+            
+class BIM_PT_linked_aggregate(Panel):
+    bl_label = "Linked Aggregates"
+    bl_idname = "BIM_PT_linked_aggregate"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+    bl_order = 2
+    bl_parent_id = "BIM_PT_aggregate"
+
+    @classmethod
+    def poll(cls, context):
+        if not context.active_object:
+            return False
+        props = context.active_object.BIMObjectProperties
+        if not props.ifc_definition_id:
+            return False
+        if not IfcStore.get_element(props.ifc_definition_id):
+            return False
+        if not IfcStore.get_file().by_id(props.ifc_definition_id).is_a("IfcObjectDefinition"):
+            return False
+        return True
+
+    def draw(self, context):
+        layout = self.layout
+        if not AggregateData.is_loaded:
+            AggregateData.load()
+
+        obj = context.active_object
+        element = tool.Ifc.get_entity(obj)
+        props = obj.BIMObjectAggregateProperties
+        row = layout.row(align=True)
+
+
+        if element.Decomposes:
+            Number_Linked_Aggregates = AggregateData.data['total_linked_aggregate']
+            if not Number_Linked_Aggregates:
+                row.label(text="Not a Linked Aggregate")
+            else:
+                row.label(text=f"{Number_Linked_Aggregates} Linked Aggregates")
+            op = row.operator("bim.duplicate_linked_aggregate_to_3d_cursor", text="", icon="DUPLICATE")
+            if type(Number_Linked_Aggregates) is int:
+                if Number_Linked_Aggregates > 0:
+                    op = row.operator("bim.select_linked_aggregates", text="", icon="OUTLINER_DATA_POINTCLOUD")
+                    op.select_parts = False
+                    op = row.operator("bim.select_linked_aggregates", text="", icon="OUTLINER_OB_POINTCLOUD")
+                    op.select_parts = True
+                    row.operator("bim.refresh_linked_aggregate", text="", icon="FILE_REFRESH")
+                    op = row.operator("bim.break_link_to_other_aggregates", text="", icon="X")
+        else:
+            row.label(text="Not an Aggregate")
+            
+        
+
@@ -27,15 +27,12 @@ classes = (
    operator.CopyAttributeToSelection,
    prop.BIMAttributeProperties,
    ui.BIM_PT_object_attributes,
-    ui.BIM_PT_material_attributes,
 )


 def register():
    bpy.types.Object.BIMAttributeProperties = bpy.props.PointerProperty(type=prop.BIMAttributeProperties)
-    bpy.types.Material.BIMAttributeProperties = bpy.props.PointerProperty(type=prop.BIMAttributeProperties)


 def unregister():
    del bpy.types.Object.BIMAttributeProperties
-    del bpy.types.Material.BIMAttributeProperties
@@ -23,7 +23,6 @@ import blenderbim.tool as tool

 def refresh():
    AttributesData.is_loaded = False
-    MaterialAttributesData.is_loaded = False


 class AttributesData:
@@ -51,28 +50,3 @@ class AttributesData:
                key = "STEP ID"
            results.append({"name": key, "value": str(value)})
        return results
-
-
-class MaterialAttributesData:
-    data = {}
-    is_loaded = False
-
-    @classmethod
-    def load(cls):
-        cls.data = {"ifc_definition_id": cls.ifc_definition_id(), "attributes": cls.attributes()}
-        cls.is_loaded = True
-
-    @classmethod
-    def ifc_definition_id(cls):
-        return bpy.context.active_object.active_material.BIMObjectProperties.ifc_definition_id
-
-    @classmethod
-    def attributes(cls):
-        results = []
-        element = tool.Ifc.get_entity(bpy.context.active_object.active_material)
-        data = element.get_info()
-        for key, value in data.items():
-            if value is None or isinstance(value, ifcopenshell.entity_instance) or key in ["id", "type"]:
-                continue
-            results.append({"name": key, "value": str(value)})
-        return results
@@ -20,6 +20,7 @@ import bpy
 import json
 import ifcopenshell
 import ifcopenshell.api
+import ifcopenshell.guid
 import blenderbim.bim.helper
 import blenderbim.bim.handler
 import blenderbim.tool as tool
@@ -39,18 +40,22 @@ class EnableEditingAttributes(bpy.types.Operator):
    bl_label = "Enable Editing Attributes"
    bl_options = {"REGISTER", "UNDO"}
    obj: bpy.props.StringProperty()
-    obj_type: bpy.props.StringProperty()

    def execute(self, context):
        self.file = IfcStore.get_file()
-        if self.obj_type == "Object":
-            obj = bpy.data.objects.get(self.obj)
-        elif self.obj_type == "Material":
-            obj = bpy.data.materials.get(self.obj)
-        oprops = obj.BIMObjectProperties
+        obj = bpy.data.objects.get(self.obj)
        props = obj.BIMAttributeProperties
        props.attributes.clear()

+        element = tool.Ifc.get_entity(obj)
+        has_inherited_predefined_type = False
+        if not element.is_a("IfcTypeObject") and (element_type := ifcopenshell.util.element.get_type(element)):
+            # Allow for None due to https://github.com/buildingSMART/IFC4.3.x-development/issues/818
+            has_inherited_predefined_type = ifcopenshell.util.element.get_predefined_type(element_type) not in (
+                "NOTDEFINED",
+                None,
+            )
+
        def callback(name, prop, data):
            if name in ("RefLatitude", "RefLongitude"):
                new = props.attributes.add()
@@ -62,10 +67,11 @@ class EnableEditingAttributes(bpy.types.Operator):
                new.string_value = "" if new.is_null else json.dumps(data[name])
                blenderbim.bim.helper.add_attribute_description(new)
                new.description += " The degrees, minutes and seconds should follow this format : [12,34,56]"
+            if name in ("PredefinedType", "ObjectType") and has_inherited_predefined_type:
+                props.attributes.remove(len(props.attributes) - 1)
+                return True

-        blenderbim.bim.helper.import_attributes2(
-            tool.Ifc.get().by_id(oprops.ifc_definition_id), props.attributes, callback=callback
-        )
+        blenderbim.bim.helper.import_attributes2(element, props.attributes, callback=callback)
        props.is_editing_attributes = True
        return {"FINISHED"}

@@ -75,13 +81,9 @@ class DisableEditingAttributes(bpy.types.Operator):
    bl_label = "Disable Editing Attributes"
    bl_options = {"REGISTER", "UNDO"}
    obj: bpy.props.StringProperty()
-    obj_type: bpy.props.StringProperty()

    def execute(self, context):
-        if self.obj_type == "Object":
-            obj = bpy.data.objects.get(self.obj)
-        elif self.obj_type == "Material":
-            obj = bpy.data.materials.get(self.obj)
+        obj = bpy.data.objects.get(self.obj)
        props = obj.BIMAttributeProperties
        props.is_editing_attributes = False
        return {"FINISHED"}
@@ -92,14 +94,10 @@ class EditAttributes(bpy.types.Operator, Operator):
    bl_label = "Edit Attributes"
    bl_options = {"REGISTER", "UNDO"}
    obj: bpy.props.StringProperty()
-    obj_type: bpy.props.StringProperty()

    def _execute(self, context):
        self.file = IfcStore.get_file()
-        if self.obj_type == "Object":
-            obj = bpy.data.objects.get(self.obj)
-        elif self.obj_type == "Material":
-            obj = bpy.data.materials.get(self.obj)
+        obj = bpy.data.objects.get(self.obj)
        props = obj.BIMAttributeProperties
        product = tool.Ifc.get_entity(obj)

@@ -116,24 +114,50 @@ class EditAttributes(bpy.types.Operator, Operator):

        attributes = blenderbim.bim.helper.export_attributes(props.attributes, callback=callback)
        ifcopenshell.api.run("attribute.edit_attributes", self.file, product=product, attributes=attributes)
-        bpy.ops.bim.disable_editing_attributes(obj=obj.name, obj_type=self.obj_type)
+        bpy.ops.bim.disable_editing_attributes(obj=obj.name)
        return {"FINISHED"}


-class GenerateGlobalId(bpy.types.Operator):
+class GenerateGlobalId(bpy.types.Operator, Operator):
    bl_idname = "bim.generate_global_id"
    bl_label = "Regenerate GlobalId"
+    bl_description = "Regenerate GlobalId\n\nSHIFT+CLICK to regenerate GlobalIds for all selected objects"
    bl_options = {"REGISTER", "UNDO"}

-    def execute(self, context):
-        index = context.active_object.BIMAttributeProperties.attributes.find("GlobalId")
-        if index >= 0:
-            global_id = context.active_object.BIMAttributeProperties.attributes[index]
+    use_selected: bpy.props.BoolProperty(name="Use All Selected Objects", default=False, options={"SKIP_SAVE"})
+
+    def invoke(self, context, event):
+        # using all selected objects on shift+click
+        # make sure to use SKIP_SAVE on property, otherwise it might get stuck
+        if event.type == "LEFTMOUSE" and event.shift:
+            self.use_selected = True
+        return self.execute(context)
+
+    def _execute(self, context):
+        if self.use_selected:
+            for obj in context.selected_objects:
+                element = tool.Ifc.get_entity(obj)
+                if not element or not element.is_a("IfcRoot"):
+                    continue
+                element.GlobalId = ifcopenshell.guid.new()
+
+        obj = context.active_object
+        if not obj or not obj.BIMAttributeProperties.is_editing_attributes:
+            return {"FINISHED"}
+
+        props = obj.BIMAttributeProperties
+        element = tool.Ifc.get_entity(obj)
+
+        if not element.is_a("IfcRoot"):
+            return {"FINISHED"}
+
+        if self.use_selected and obj in context.selected_objects:
+            # guid value was already regenerated, just update the ui prop
+            guid_value = element.GlobalId
        else:
-            global_id = context.active_object.BIMAttributeProperties.attributes.add()
-        global_id.name = "GlobalId"
-        global_id.data_type = "string"
-        global_id.string_value = ifcopenshell.guid.new()
+            guid_value = ifcopenshell.guid.new()
+
+        props.attributes["GlobalId"].string_value = guid_value
        return {"FINISHED"}


@@ -19,34 +19,34 @@
 import blenderbim.bim.helper
 from bpy.types import Panel
 from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim.module.attribute.data import AttributesData, MaterialAttributesData
+from blenderbim.bim.module.attribute.data import AttributesData


-def draw_ui(context, layout, obj_type, attributes):
-    obj = context.active_object if obj_type == "Object" else context.active_object.active_material
+def draw_ui(context, layout, attributes):
+    obj = context.active_object
    oprops = obj.BIMObjectProperties
    props = obj.BIMAttributeProperties

    if props.is_editing_attributes:
        row = layout.row(align=True)
        op = row.operator("bim.edit_attributes", icon="CHECKMARK", text="Save Attributes")
-        op.obj_type = obj_type
        op.obj = obj.name
        op = row.operator("bim.disable_editing_attributes", icon="CANCEL", text="")
-        op.obj_type = obj_type
        op.obj = obj.name

        blenderbim.bim.helper.draw_attributes(props.attributes, layout, copy_operator="bim.copy_attribute_to_selection")
    else:
        row = layout.row()
        op = row.operator("bim.enable_editing_attributes", icon="GREASEPENCIL", text="Edit")
-        op.obj_type = obj_type
        op.obj = obj.name

        for attribute in attributes:
            row = layout.row(align=True)
            row.label(text=attribute["name"])
-            row.label(text=attribute["value"])
+            # row.label(text=attribute["value"])
+            op = row.operator("bim.select_similar", text=attribute["value"], icon="NONE", emboss=False)
+            op.key = attribute['name']
+            

    # TODO: reimplement, see #1222
    # if "IfcSite/" in context.active_object.name or "IfcBuilding/" in context.active_object.name:
@@ -72,32 +72,4 @@ class BIM_PT_object_attributes(Panel):
    def draw(self, context):
        if not AttributesData.is_loaded:
            AttributesData.load()
-        draw_ui(context, self.layout, "Object", AttributesData.data["attributes"])
-
-
-class BIM_PT_material_attributes(Panel):
-    bl_label = "Material Attributes"
-    bl_idname = "BIM_PT_material_attributes"
-    bl_space_type = "PROPERTIES"
-    bl_region_type = "WINDOW"
-    bl_context = "material"
-
-    @classmethod
-    def poll(cls, context):
-        if not IfcStore.get_file():
-            return False
-        try:
-            return bool(context.active_object.active_material.BIMObjectProperties.ifc_definition_id)
-        except:
-            return False
-
-    def draw(self, context):
-        if not MaterialAttributesData.is_loaded:
-            MaterialAttributesData.load()
-        elif (
-            context.active_object.active_material.BIMObjectProperties.ifc_definition_id
-            != MaterialAttributesData.data["ifc_definition_id"]
-        ):
-            MaterialAttributesData.load()
-
-        draw_ui(context, self.layout, "Material", MaterialAttributesData.data["attributes"])
+        draw_ui(context, self.layout, AttributesData.data["attributes"])
@@ -938,7 +938,7 @@ class ActivateBcfViewpoint(bpy.types.Operator):
        # Operators with context overrides are used because they are
        # significantly faster than looping through all objects

-        exception_global_ids = {v.ifc_guid for v in viewpoint.visualization_info.components.visibility.exceptions or []}
+        exception_global_ids = {v.ifc_guid for v in viewpoint.visualization_info.components.visibility.exceptions.component or []}

        if viewpoint.visualization_info.components.visibility.default_visibility:
            old = context.area.type
@@ -958,11 +958,13 @@ class ActivateBcfViewpoint(bpy.types.Operator):
            if objs:
                old = context.area.type
                context.area.type = "VIEW_3D"
+                bpy.ops.object.hide_view_clear()
                context_override = {}
                context_override["object"] = context_override["active_object"] = objs[0]
                context_override["selected_objects"] = context_override["selected_editable_objects"] = objs
                with context.temp_override(**context_override):
                    bpy.ops.object.hide_view_set(unselected=True)
+                    bpy.data.objects["Viewpoint"].hide_set(False)
                context.area.type = old

        if viewpoint.visualization_info.components.view_setup_hints:
@@ -1000,6 +1002,7 @@ class ActivateBcfViewpoint(bpy.types.Operator):
            obj = IfcStore.get_element(global_id)
            if obj:
                obj.select_set(True)
+                obj.hide_set(False)

    def set_colours(self, viewpoint):
        global_id_colours = {}
@@ -22,6 +22,7 @@ from . import ui, operator, prop
 classes = (
    operator.AddBoundary,
    operator.ColourByRelatedBuildingElement,
+    operator.DecorateBoundaries,
    operator.DisableEditingBoundary,
    operator.DisableEditingBoundaryGeometry,
    operator.EditBoundaryAttributes,
@@ -20,10 +20,12 @@ import bpy
 import bmesh
 import logging
 import shapely
+import shapely.ops
 import mathutils
 import numpy as np
 import multiprocessing
 import ifcopenshell.api
+import ifcopenshell.geom
 import ifcopenshell.util.unit
 import ifcopenshell.util.shape
 import ifcopenshell.util.element
@@ -37,6 +39,7 @@ from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.model.decorator import ProfileDecorator
 from blenderbim.bim.module.boundary.decorator import BoundaryDecorator
 import blenderbim.core
+import blenderbim.core.geometry


 def get_boundaries_collection(blender_space):
@@ -147,7 +150,9 @@ class Loader:
        self.ifc_importer = import_ifc.IfcImporter(ifc_import_settings)
        self.ifc_importer.file = self.ifc_file

-    def load_boundary(self, boundary, blender_space=None):
+    def load_boundary(
+        self, boundary: ifcopenshell.entity_instance, blender_space: bpy.types.Object = None
+    ) -> bpy.types.Object:
        if not blender_space:
            if not boundary.RelatingSpace:
                self.operator.report(
@@ -509,10 +514,10 @@ class DisableEditingBoundaryGeometry(bpy.types.Operator, tool.Ifc.Operator):
 class ShowBoundaries(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.show_boundaries"
    bl_label = "Show Boundaries"
+    bl_description = "Load selected objects boundaries if they are not loaded"
    bl_options = {"REGISTER", "UNDO"}

    def _execute(self, context):
-        props = bpy.context.scene.BIMBoundaryProperties
        loader = Loader(self)
        for obj in context.selected_objects:
            element = tool.Ifc.get_entity(obj)
@@ -524,7 +529,7 @@ class ShowBoundaries(bpy.types.Operator, tool.Ifc.Operator):
            for rel in element.BoundedBy or []:
                boundary_obj = loader.load_boundary(rel, obj)
                tool.Boundary.decorate_boundary(boundary_obj)
-        BoundaryDecorator.install(bpy.context)
+        BoundaryDecorator.install(context)
        return {"FINISHED"}


@@ -557,6 +562,36 @@ class HideBoundaries(bpy.types.Operator, tool.Ifc.Operator):
        return {"FINISHED"}


+class DecorateBoundaries(bpy.types.Operator, tool.Ifc.Operator):
+    bl_idname = "bim.decorate_boundaries"
+    bl_label = "Toggle Boundaries Decorations"
+    bl_description = "Add special decorations for all boundaries in the scene or hide them if they are already added"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.scene.BIMBoundaryProperties
+        # filter not decorated boundaries and add decorations for them
+        decorated_boundaries = set([i.obj for i in props.boundaries])
+        active_boundaries = set()
+        for element in tool.Ifc.get().by_type("IfcRelSpaceBoundary"):
+            obj = tool.Ifc.get_object(element)
+            if obj is not None:
+                active_boundaries.add(obj)
+
+        boundaries_to_decorate = active_boundaries - decorated_boundaries
+        if boundaries_to_decorate:
+            for obj in boundaries_to_decorate:
+                tool.Boundary.decorate_boundary(obj)
+            BoundaryDecorator.install(context)
+        else:
+            for obj in decorated_boundaries:
+                tool.Boundary.undecorate_boundary(obj)
+            props.boundaries.clear()
+            BoundaryDecorator.uninstall()
+            tool.Blender.update_viewport()
+        return {"FINISHED"}
+
+
 class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_boundary"
    bl_label = "Add Boundary"
@@ -37,7 +37,7 @@ classes = (

 def register():
    if not bpy.app.background:
-        bpy.utils.register_tool(workspace.CadTool, after={"builtin.transform"}, separator=True, group=True)
+        bpy.utils.register_tool(workspace.CadTool, after={"builtin.transform"}, separator=True, group=False)
    bpy.types.Scene.BIMCadProperties = bpy.props.PointerProperty(type=prop.BIMCadProperties)


@@ -24,10 +24,10 @@ from math import pi

 class BIMCadProperties(PropertyGroup):
    resolution: bpy.props.IntProperty(name="Arc Resolution", min=1, default=1)
-    radius: bpy.props.FloatProperty(name="Radius", default=0.1)
-    distance: bpy.props.FloatProperty(name="Distance", default=0.1)
-    x: bpy.props.FloatProperty(name="X", default=0.2)
-    y: bpy.props.FloatProperty(name="Y", default=0.1)
+    radius: bpy.props.FloatProperty(name="Radius", default=0.1, subtype="DISTANCE")
+    distance: bpy.props.FloatProperty(name="Distance", default=0.1, subtype="DISTANCE")
+    x: bpy.props.FloatProperty(name="X", default=0.2, subtype="DISTANCE")
+    y: bpy.props.FloatProperty(name="Y", default=0.1, subtype="DISTANCE")
    gable_roof_edge_angle: bpy.props.FloatProperty(
        name="Gable Roof Edge Angle", default=pi / 2, soft_min=0, soft_max=pi / 2, subtype="ANGLE"
    )
@@ -20,6 +20,7 @@ import os
 import bpy
 import blenderbim.tool as tool
 import blenderbim.bim.module.type.prop as type_prop
+import ifcopenshell.util.unit
 from bpy.types import WorkSpaceTool
 from blenderbim.bim.module.model.data import AuthoringData, RailingData, RoofData

@@ -239,8 +240,9 @@ class CadHotkey(bpy.types.Operator):
                row.prop(props, "resolution")

    def hotkey_S_C(self):
+        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
        if self.is_profile():
-            bpy.ops.bim.add_ifccircle(radius=self.props.radius)
+            bpy.ops.bim.add_ifccircle(radius=self.props.radius / si_conversion)
        else:
            bpy.ops.bim.cad_arc_from_2_points()

@@ -248,13 +250,15 @@ class CadHotkey(bpy.types.Operator):
        bpy.ops.bim.cad_trim_extend()

    def hotkey_S_F(self):
+        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
        if self.is_profile():
-            bpy.ops.bim.add_ifcarcindex_fillet(radius=self.props.radius)
+            bpy.ops.bim.add_ifcarcindex_fillet(radius=self.props.radius / si_conversion)
        else:
-            bpy.ops.bim.cad_fillet(resolution=self.props.resolution, radius=self.props.radius)
+            bpy.ops.bim.cad_fillet(resolution=self.props.resolution, radius=self.props.radius / si_conversion)

    def hotkey_S_O(self):
-        bpy.ops.bim.cad_offset(distance=self.props.distance)
+        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+        bpy.ops.bim.cad_offset(distance=self.props.distance / si_conversion)

    def hotkey_S_Q(self):
        element = tool.Ifc.get_entity(bpy.context.active_object)
@@ -270,7 +274,8 @@ class CadHotkey(bpy.types.Operator):

    def hotkey_S_R(self):
        if self.is_profile():
-            bpy.ops.bim.add_rectangle(x=self.props.x, y=self.props.y)
+            si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+            bpy.ops.bim.add_rectangle(x=self.props.x / si_conversion, y=self.props.y / si_conversion)
        elif (
            (RoofData.is_loaded or not RoofData.load())
            and RoofData.data["pset_data"]
@@ -25,15 +25,12 @@ classes = (
    operator.ExecuteIfcClash,
    operator.ExportClashSets,
    operator.ImportClashSets,
-    operator.LoadIfcClashes,
-    operator.SaveIfcClashes,
    operator.LoadSmartGroupsForActiveClashSet,
    operator.RemoveClashSet,
    operator.RemoveClashSource,
    operator.SelectClash,
    operator.SelectClashResults,
    operator.SelectClashSource,
-    operator.SelectIfcClashResults,
    operator.SelectSmartGroup,
    operator.SelectSmartGroupedClashesPath,
    operator.SmartClashGroup,
@@ -44,7 +41,6 @@ classes = (
    prop.BIMClashProperties,
    ui.BIM_PT_ifcclash,
    ui.BIM_PT_clash_manager,
-    ui.BIM_PT_dumb_clash_manager,
    ui.BIM_PT_smart_clash_manager,
    ui.BIM_UL_clashes,
    ui.BIM_UL_clash_sets,
@@ -0,0 +1,52 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2024 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import json
+import ifcopenshell.util.element
+import blenderbim.tool as tool
+
+
+def refresh():
+    ClashData.is_loaded = False
+
+
+class ClashData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data = {}
+        cls.data["saved_searches"] = cls.saved_searches()
+
+    @classmethod
+    def saved_searches(cls):
+        if not tool.Ifc.get():
+            return []
+        groups = tool.Ifc.get().by_type("IfcGroup")
+        results = []
+        for group in groups:
+            try:
+                data = json.loads(group.Description)
+                if isinstance(data, dict) and data.get("type", None) == "BBIM_Search" and data.get("query", None):
+                    results.append(group)
+            except:
+                pass
+        return [(str(g.id()), g.Name or "Unnamed", "") for g in sorted(results, key=lambda x: x.Name or "Unnamed")]
@@ -0,0 +1,102 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2024 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import blf
+import gpu
+import bmesh
+import blenderbim.tool as tool
+from bpy.types import SpaceView3D
+from mathutils import Vector
+from gpu_extras.batch import batch_for_shader
+from bpy_extras.view3d_utils import location_3d_to_region_2d
+
+
+class ClashDecorator:
+    is_installed = False
+    handlers = []
+
+    @classmethod
+    def install(cls, context):
+        if cls.is_installed:
+            cls.uninstall()
+        handler = cls()
+        cls.handlers.append(SpaceView3D.draw_handler_add(handler.draw_text, (context,), "WINDOW", "POST_PIXEL"))
+        cls.handlers.append(SpaceView3D.draw_handler_add(handler.draw_geometry, (context,), "WINDOW", "POST_VIEW"))
+        cls.is_installed = True
+
+    @classmethod
+    def uninstall(cls):
+        for handler in cls.handlers:
+            try:
+                SpaceView3D.draw_handler_remove(handler, "WINDOW")
+            except ValueError:
+                pass
+        cls.is_installed = False
+
+    def draw_batch(self, shader_type, content_pos, color, indices=None):
+        shader = self.line_shader if shader_type == "LINES" else self.shader
+        batch = batch_for_shader(shader, shader_type, {"pos": content_pos}, indices=indices)
+        shader.uniform_float("color", color)
+        batch.draw(shader)
+
+    def draw_text(self, context):
+        self.addon_prefs = context.preferences.addons["blenderbim"].preferences
+        selected_elements_color = self.addon_prefs.decorator_color_selected
+        unselected_elements_color = self.addon_prefs.decorator_color_unselected
+        special_elements_color = self.addon_prefs.decorator_color_special
+
+        text = context.scene.BIMClashProperties.active_clash_text
+        p = context.scene.BIMClashProperties.p1.lerp(context.scene.BIMClashProperties.p2, 0.5)
+
+        font_id = 0
+        blf.size(font_id, 12)
+        coords_2d = location_3d_to_region_2d(context.region, context.region_data, p)
+        color = self.addon_prefs.decorations_colour
+        blf.color(font_id, *color)
+        if coords_2d:
+            w, h = blf.dimensions(font_id, text)
+            coords_2d -= Vector((w * .5, 0))
+            blf.position(font_id, coords_2d[0], coords_2d[1], 0)
+            blf.draw(font_id, text)  # Set your text here
+
+    def draw_geometry(self, context):
+        self.addon_prefs = context.preferences.addons["blenderbim"].preferences
+        selected_elements_color = self.addon_prefs.decorator_color_selected
+        unselected_elements_color = self.addon_prefs.decorator_color_unselected
+        special_elements_color = self.addon_prefs.decorator_color_special
+
+        gpu.state.point_size_set(6)
+        gpu.state.blend_set("ALPHA")
+
+        self.line_shader = gpu.shader.from_builtin("POLYLINE_UNIFORM_COLOR")
+        self.line_shader.bind()  # required to be able to change uniforms of the shader
+        # POLYLINE_UNIFORM_COLOR specific uniforms
+        self.line_shader.uniform_float("viewportSize", (context.region.width, context.region.height))
+        self.line_shader.uniform_float("lineWidth", 2.0)
+
+        # general shader
+        self.shader = gpu.shader.from_builtin("UNIFORM_COLOR")
+
+        selected_vertices = [context.scene.BIMClashProperties.p1, context.scene.BIMClashProperties.p2]
+        selected_edges = []
+        if selected_vertices[0] != selected_vertices[1]:
+            selected_edges = [[0, 1]]
+
+        self.draw_batch("POINTS", selected_vertices, special_elements_color)
+        if selected_edges:
+            self.draw_batch("LINES", selected_vertices, special_elements_color, selected_edges)
@@ -23,10 +23,11 @@ import bmesh
 import logging
 import numpy as np
 import ifcopenshell
-from mathutils import Matrix, Vector
-from math import radians
-from blenderbim.bim.ifc import IfcStore
 import blenderbim.tool as tool
+from math import radians
+from mathutils import Matrix, Vector
+from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.module.clash.decorator import ClashDecorator


 class ExportClashSets(bpy.types.Operator):
@@ -45,18 +46,7 @@ class ExportClashSets(bpy.types.Operator):

    def execute(self, context):
        self.filepath = bpy.path.ensure_ext(self.filepath, ".json")
-        clash_sets = []
-        for clash_set in context.scene.BIMClashProperties.clash_sets:
-            self.a = []
-            self.b = []
-            for ab in ["a", "b"]:
-                for data in getattr(clash_set, ab):
-                    clash_source = {"file": data.name}
-                    if data.selector:
-                        clash_source["selector"] = data.selector
-                        clash_source["mode"] = data.mode
-                    getattr(self, ab).append(clash_source)
-            clash_sets.append({"name": clash_set.name, "tolerance": clash_set.tolerance, "a": self.a, "b": self.b})
+        clash_sets = tool.Clash.export_clash_sets()
        with open(self.filepath, "w") as destination:
            destination.write(json.dumps(clash_sets, indent=4))
        return {"FINISHED"}
@@ -78,25 +68,34 @@ class ImportClashSets(bpy.types.Operator):
        return {"RUNNING_MODAL"}

    def execute(self, context):
-        with open(self.filepath) as f:
-            clash_sets = json.load(f)
-        for clash_set in clash_sets:
+        tool.Clash.load_clash_sets(self.filepath)
+        context.scene.BIMClashProperties.clash_sets.clear()
+        for clash_set in tool.Clash.get_clash_sets():
            new = context.scene.BIMClashProperties.clash_sets.add()
            new.name = clash_set["name"]
-            new.tolerance = clash_set["tolerance"]
+            new.mode = clash_set["mode"]
+            if new.mode == "intersection":
+                new.tolerance = clash_set["tolerance"]
+                new.check_all = clash_set["check_all"]
+            elif new.mode == "collision":
+                new.allow_touching = clash_set["allow_touching"]
+            elif new.mode == "clearance":
+                new.clearance = clash_set["clearance"]
+                new.check_all = clash_set["check_all"]
            for clash_source in clash_set["a"]:
                new_source = new.a.add()
                new_source.name = clash_source["file"]
                if "selector" in clash_source:
-                    new_source.selector = clash_source["selector"]
+                    tool.Search.import_filter_query(clash_source["selector"], new_source.filter_groups)
                    new_source.mode = clash_source["mode"]
-            if clash_set["b"]:
+            if "b" in clash_set and clash_set["b"]:
                for clash_source in clash_set["b"]:
                    new_source = new.b.add()
                    new_source.name = clash_source["file"]
                    if "selector" in clash_source:
-                        new_source.selector = clash_source["selector"]
+                        tool.Search.import_filter_query(clash_source["selector"], new_source.filter_groups)
                        new_source.mode = clash_source["mode"]
+        tool.Clash.import_active_clashes()
        return {"FINISHED"}


@@ -109,7 +108,6 @@ class AddClashSet(bpy.types.Operator):
    def execute(self, context):
        new = context.scene.BIMClashProperties.clash_sets.add()
        new.name = "New Clash Set"
-        new.tolerance = 0.01
        return {"FINISHED"}


@@ -211,8 +209,11 @@ class ExecuteIfcClash(bpy.types.Operator):

    def invoke(self, context, event):
        _, extension = os.path.splitext(self.filepath)
-        if extension != ".json":
-            self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".bcf")
+        if extension != ".bcf":
+            self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".json")
+        # TODO Temporarily until BCF support comes back
+        # if extension != ".json":
+        #     self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".bcf")
        WindowManager = context.window_manager
        WindowManager.fileselect_add(self)
        return {"RUNNING_MODAL"}
@@ -220,7 +221,12 @@ class ExecuteIfcClash(bpy.types.Operator):
    def execute(self, context):
        from ifcclash import ifcclash

+        self.props = context.scene.BIMClashProperties
+
        _, extension = os.path.splitext(self.filepath)
+        if extension != ".bcf":
+            self.filepath = bpy.path.ensure_ext(self.filepath, ".json")
+        # TODO Temporarily until BCF support comes back
        if extension != ".json":
            self.filepath = bpy.path.ensure_ext(self.filepath, ".bcf")

@@ -230,7 +236,7 @@ class ExecuteIfcClash(bpy.types.Operator):
        settings.logger.setLevel(logging.DEBUG)
        clasher = ifcclash.Clasher(settings)

-        if context.scene.BIMClashProperties.should_create_clash_snapshots:
+        if self.props.should_create_clash_snapshots:

            def get_viewpoint_snapshot(viewpoint):
                camera = bpy.data.objects.get("IFC Clash Camera")
@@ -271,23 +277,13 @@ class ExecuteIfcClash(bpy.types.Operator):

            clasher.get_viewpoint_snapshot = get_viewpoint_snapshot

-        clasher.clash_sets = []
-        for clash_set in context.scene.BIMClashProperties.clash_sets:
-            self.a = []
-            self.b = []
-            for ab in ["a", "b"]:
-                for data in getattr(clash_set, ab):
-                    clash_source = {"file": data.name}
-                    if data.selector:
-                        clash_source["selector"] = data.selector
-                        clash_source["mode"] = data.mode
-                    getattr(self, ab).append(clash_source)
-            clash_set_data = {"name": clash_set.name, "tolerance": clash_set.tolerance, "a": self.a}
-            if self.b:
-                clash_set_data["b"] = self.b
-            clasher.clash_sets.append(clash_set_data)
+        clasher.clash_sets = tool.Clash.export_clash_sets()
        clasher.clash()
        clasher.export()
+
+        if extension == ".json":
+            tool.Clash.load_clash_sets(self.filepath)
+            tool.Clash.import_active_clashes()
        return {"FINISHED"}


@@ -306,6 +302,7 @@ class SelectIfcClashResults(bpy.types.Operator):
        return {"RUNNING_MODAL"}

    def execute(self, context):
+        # TODO refactor into new clash results system
        self.file = IfcStore.get_file()
        self.filepath = bpy.path.ensure_ext(self.filepath, ".json")
        with open(self.filepath) as f:
@@ -352,83 +349,6 @@ class SelectIfcClashResults(bpy.types.Operator):
        return {"FINISHED"}


-class LoadIfcClashes(bpy.types.Operator):
-    bl_idname = "bim.load_ifc_clashes"
-    bl_label = "Load IFC Clashes"
-    bl_options = {"REGISTER", "UNDO"}
-    bl_description = "Load the clashing IFC geometry stored in a file"
-    filename_ext = ".json"
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
-
-    def invoke(self, context, event):
-        self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".json")
-        WindowManager = context.window_manager
-        WindowManager.fileselect_add(self)
-        return {"RUNNING_MODAL"}
-
-    def execute(self, context):
-        self.file = IfcStore.get_file()
-        self.filepath = bpy.path.ensure_ext(self.filepath, ".json")
-        with open(self.filepath) as f:
-            clash_sets_json = json.load(f)
-        active_clash_set = context.scene.BIMClashProperties.active_clash_set
-
-        for clash_set in clash_sets_json:
-            if not "clashes" in clash_set.keys():
-                self.report({"WARNING"}, "No clashes found for the selected Clash Set.")
-                return {"CANCELLED"}
-            active_clash_set.clashes.clear()
-            for clash in clash_set["clashes"].values():
-                blender_clash = active_clash_set.clashes.add()
-                blender_clash.a_global_id = clash["a_global_id"]
-                blender_clash.b_global_id = clash["b_global_id"]
-                blender_clash.a_name = "{}/{}".format(clash["a_ifc_class"], clash["a_name"])
-                blender_clash.b_name = "{}/{}".format(clash["b_ifc_class"], clash["b_name"])
-                blender_clash.status = False if not "status" in clash.keys() else clash["status"]
-        return {"FINISHED"}
-
-
-class SaveIfcClashes(bpy.types.Operator):
-    bl_idname = "bim.save_ifc_clashes"
-    bl_label = "Save IFC Clashes"
-    bl_options = {"REGISTER", "UNDO"}
-    bl_description = "Save the clashing IFC geometry stored in a file"
-    filename_ext = ".json"
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
-
-    def invoke(self, context, event):
-        self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".json")
-        WindowManager = context.window_manager
-        WindowManager.fileselect_add(self)
-        return {"RUNNING_MODAL"}
-
-    def execute(self, context):
-        self.file = IfcStore.get_file()
-        self.filepath = bpy.path.ensure_ext(self.filepath, ".json")
-        clash_sets_json = self.load_json()
-        active_clash_set = context.scene.BIMClashProperties.active_clash_set
-        self.update_clash_sets(clash_sets_json, active_clash_set)
-        self.save_json(clash_sets_json)
-        return {"FINISHED"}
-
-    def load_json(self):
-        with open(self.filepath) as f:
-            return json.load(f)
-
-    def update_clash_sets(self, clash_sets_json, active_clash_set):
-        for clash_set in clash_sets_json:
-            if clash_set["name"] != active_clash_set.name or "clashes" not in clash_set.keys():
-                continue
-            for clash in active_clash_set.clashes:
-                clash_key = clash.a_global_id + "-" + clash.b_global_id
-                if clash_set.get("clashes", {}).get(clash_key, None) is not None:
-                    clash_set["clashes"][clash_key]["status"] = clash.status
-
-    def save_json(self, clash_sets_json):
-        with open(self.filepath, "w") as destination:
-            json.dump(clash_sets_json, destination, indent=4)
-
-
 class SelectClash(bpy.types.Operator):
    bl_idname = "bim.select_clash"
    bl_label = "Select Clash"
@@ -437,31 +357,29 @@ class SelectClash(bpy.types.Operator):
    index: bpy.props.IntProperty()

    def execute(self, context):
-        clash = context.scene.BIMClashProperties.active_clash
+        self.props = context.scene.BIMClashProperties
+        clash_set = tool.Clash.get_clash_set(self.props.active_clash_set.name)
+        active_clash = self.props.active_clash
+        clash = tool.Clash.get_clash(clash_set, active_clash.a_global_id, active_clash.b_global_id)
+
+        if not clash:
+            return {"FINISHED"}

        products = []
-        linked_objects = []
-        try:
-            products.append(tool.Ifc.get().by_guid(clash.a_global_id))
-        except:
-            linked_objects.append(clash.a_name)
-        try:
-            products.append(tool.Ifc.get().by_guid(clash.b_global_id))
-        except:
-            linked_objects.append(clash.b_name)
+
+        for global_id in (clash["a_global_id"], clash["b_global_id"]):
+            try:
+                products.append(tool.Ifc.get().by_guid(global_id))
+            except:
+                pass

        tool.Spatial.select_products(products, unhide=True)
-        print(linked_objects)
-        for obj_name in linked_objects:
-            obj = bpy.data.objects.get(obj_name)
-            if obj:
-                obj.select_set(True)
-            else:
-                print("Object not found:", obj_name)
-        if context.scene.BIMClashProperties.sould_focus_on_clash:
-            context_override = tool.Blender.get_viewport_context()
-            with bpy.context.temp_override(**context_override):
-                bpy.ops.view3d.view_selected()
+        ClashDecorator.install(bpy.context)
+        target = Vector(clash["p1"])
+        tool.Clash.look_at(target, target + Vector((5, 5, 5)))
+        self.props.p1 = clash["p1"]
+        self.props.p2 = clash["p2"]
+        self.props.active_clash_text = clash["type"].title() + " " + str(round(clash["distance"] * 1000)) + "mm"
        return {"FINISHED"}


@@ -17,7 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

 import bpy
-from blenderbim.bim.prop import StrProperty, Attribute
+from blenderbim.bim.prop import StrProperty, Attribute, BIMFilterGroup
 from bpy.types import PropertyGroup
 from bpy.props import (
    PointerProperty,
@@ -33,11 +33,12 @@ from bpy.props import (

 class ClashSource(PropertyGroup):
    name: StringProperty(name="File")
-    selector: StringProperty(name="Selector")
+    filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")
    mode: EnumProperty(
        items=[
-            ("i", "Include", "Only the selected objects are included for clashing"),
-            ("e", "Exclude", "All objects except the selected objects are included for clashing"),
+            ("a", "All Elements", "All elements will be used for clashing"),
+            ("i", "Include", "Only the selected elements are included for clashing"),
+            ("e", "Exclude", "All elements except the selected elements are included for clashing"),
        ],
        name="Mode",
    )
@@ -53,7 +54,24 @@ class Clash(PropertyGroup):

 class ClashSet(PropertyGroup):
    name: StringProperty(name="Name")
-    tolerance: FloatProperty(name="Tolerance")
+    mode: EnumProperty(
+        items=[
+            (
+                "intersection",
+                "Intersection",
+                "Detect objects that protrude or pierce another object",
+                "PIVOT_MEDIAN",
+                1,
+            ),
+            ("collision", "Collision", "Detect touching objects with any surface collision", "PIVOT_INDIVIDUAL", 2),
+            ("clearance", "Clearance", "Detect objects within a proximity threshold", "PIVOT_ACTIVE", 3),
+        ],
+        name="Mode",
+    )
+    tolerance: FloatProperty(name="Tolerance", default=0.002)
+    clearance: FloatProperty(name="Clearance", default=0.01)
+    allow_touching: BoolProperty(name="Allow Touching", default=False)
+    check_all: BoolProperty(name="Check All", default=False)
    a: CollectionProperty(name="Group A", type=ClashSource)
    b: CollectionProperty(name="Group B", type=ClashSource)
    clashes: CollectionProperty(name="Clashes", type=Clash)
@@ -78,22 +96,21 @@ class BIMClashProperties(PropertyGroup):
    smart_clash_grouping_max_distance: IntProperty(
        name="Smart Clash Grouping Max Distance", default=3, soft_min=1, soft_max=10
    )
-    sould_focus_on_clash: BoolProperty(name="Show Focus Clash", default=False)
+    p1: FloatVectorProperty(name="P1", default=(0.0, 0.0, 0.0), subtype="XYZ")
+    p2: FloatVectorProperty(name="P2", default=(0.0, 0.0, 0.0), subtype="XYZ")
+    active_clash_text: StringProperty(name="Active Clash Text")

    @property
    def active_clash_set(self):
-        if not self.clash_sets:
-            return None
-        return self.clash_sets[self.active_clash_set_index]
+        if self.active_clash_set_index < len(self.clash_sets):
+            return self.clash_sets[self.active_clash_set_index]

    @property
    def active_smart_group(self):
-        if not self.smart_clash_groups:
-            return None
-        return self.smart_clash_groups[self.active_smart_group_index]
+        if self.active_smart_group_index < len(self.smart_clash_groups):
+            return self.smart_clash_groups[self.active_smart_group_index]

    @property
    def active_clash(self):
-        if not self.active_clash_set:
-            return None
-        return self.active_clash_set.clashes[self.active_clash_index]
+        if self.active_clash_index < len(self.active_clash_set.clashes):
+            return self.active_clash_set.clashes[self.active_clash_index]
@@ -17,7 +17,9 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

 import bpy
+import blenderbim.bim.helper
 from bpy.types import Panel
+from blenderbim.bim.module.clash.data import ClashData


 class BIM_PT_ifcclash(Panel):
@@ -30,6 +32,9 @@ class BIM_PT_ifcclash(Panel):
    bl_parent_id = "BIM_PT_tab_clash_detection"

    def draw(self, context):
+        if not ClashData.is_loaded:
+            ClashData.load()
+
        layout = self.layout

        scene = context.scene
@@ -45,57 +50,83 @@ class BIM_PT_ifcclash(Panel):

        layout.template_list("BIM_UL_clash_sets", "", props, "clash_sets", props, "active_clash_set_index")

-        if props.active_clash_set_index < len(props.clash_sets):
-            clash_set = props.active_clash_set
+        if not props.active_clash_set:
+            return

-            row = layout.row(align=True)
-            row.prop(clash_set, "name")
-            row.operator("bim.remove_clash_set", icon="X", text="").index = props.active_clash_set_index
+        clash_set = props.active_clash_set

-            row = layout.row(align=True)
+        row = layout.row(align=True)
+        row.prop(clash_set, "name")
+        row.operator("bim.remove_clash_set", icon="X", text="").index = props.active_clash_set_index
+
+        row = layout.row()
+        row.prop(clash_set, "mode")
+
+        if clash_set.mode == "intersection":
+            row = layout.row()
            row.prop(clash_set, "tolerance")
-
-            layout.label(text="Group A:")
            row = layout.row()
-            row.operator("bim.add_clash_source").group = "a"
-
-            for index, source in enumerate(clash_set.a):
-                row = layout.row(align=True)
-                row.prop(source, "name", text="")
-                op = row.operator("bim.select_clash_source", icon="FILE_FOLDER", text="")
-                op.index = index
-                op.group = "a"
-                op = row.operator("bim.remove_clash_source", icon="X", text="")
-                op.index = index
-                op.group = "a"
-
-                row = layout.row(align=True)
-                row.prop(source, "mode", text="")
-                row.prop(source, "selector", text="")
-
-            layout.label(text="Group B:")
+            row.prop(clash_set, "check_all")
+        elif clash_set.mode == "collision":
            row = layout.row()
-            row.operator("bim.add_clash_source").group = "b"
-
-            for index, source in enumerate(clash_set.b):
-                row = layout.row(align=True)
-                row.prop(source, "name", text="")
-                op = row.operator("bim.select_clash_source", icon="FILE_FOLDER", text="")
-                op.index = index
-                op.group = "b"
-                op = row.operator("bim.remove_clash_source", icon="X", text="")
-                op.index = index
-                op.group = "b"
-
-                row = layout.row(align=True)
-                row.prop(source, "mode", text="")
-                row.prop(source, "selector", text="")
-
+            row.prop(clash_set, "allow_touching")
+        elif clash_set.mode == "clearance":
            row = layout.row()
-            row.prop(props, "should_create_clash_snapshots")
+            row.prop(clash_set, "clearance")
+            row = layout.row()
+            row.prop(clash_set, "check_all")
+
+        row = layout.row(align=True)
+        row.label(text="Group A:", icon="OUTLINER_OB_POINTCLOUD")
+        row.operator("bim.add_clash_source", icon="ADD", text="").group = "a"
+
+        for index, source in enumerate(clash_set.a):
            row = layout.row(align=True)
-            row.operator("bim.execute_ifc_clash")
-            row.operator("bim.select_ifc_clash_results")
+            row.prop(source, "name", text="")
+            row.prop(source, "mode", text="")
+            op = row.operator("bim.select_clash_source", icon="FILE_FOLDER", text="")
+            op.index = index
+            op.group = "a"
+            op = row.operator("bim.remove_clash_source", icon="X", text="")
+            op.index = index
+            op.group = "a"
+
+            if source.mode != "a":
+                blenderbim.bim.helper.draw_filter(
+                    layout, source.filter_groups, ClashData, f"clash_{props.active_clash_set_index}_a_{index}"
+                )
+
+        row = layout.row(align=True)
+        row.label(text="Group B:", icon="OUTLINER_OB_POINTCLOUD")
+        row.operator("bim.add_clash_source", icon="ADD", text="").group = "b"
+
+        for index, source in enumerate(clash_set.b):
+            row = layout.row(align=True)
+            row.prop(source, "name", text="")
+            row.prop(source, "mode", text="")
+            op = row.operator("bim.select_clash_source", icon="FILE_FOLDER", text="")
+            op.index = index
+            op.group = "b"
+            op = row.operator("bim.remove_clash_source", icon="X", text="")
+            op.index = index
+            op.group = "b"
+
+            if source.mode != "a":
+                blenderbim.bim.helper.draw_filter(
+                    layout, source.filter_groups, ClashData, f"clash_{props.active_clash_set_index}_b_{index}"
+                )
+
+        row = layout.row()
+        row.prop(props, "should_create_clash_snapshots")
+        row = layout.row()
+        row.operator("bim.execute_ifc_clash")
+
+        row = layout.row()
+        row.label(text=f"{len(clash_set.clashes)} Clashes Found", icon="PIVOT_CURSOR")
+
+        layout.template_list("BIM_UL_clashes", "", props.active_clash_set, "clashes", props, "active_clash_index")
+        row = layout.row()
+        row.operator("bim.select_clash")


 class BIM_PT_clash_manager(Panel):
@@ -111,29 +142,6 @@ class BIM_PT_clash_manager(Panel):
        pass


-class BIM_PT_dumb_clash_manager(Panel):
-    bl_idname = "BIM_PT_dumb_clash_manager"
-    bl_label = "Dumb Manager"
-    bl_options = {"DEFAULT_CLOSED"}
-    bl_space_type = "PROPERTIES"
-    bl_region_type = "WINDOW"
-    bl_context = "scene"
-    bl_parent_id = "BIM_PT_clash_manager"
-
-    def draw(self, context):
-        layout = self.layout
-        props = context.scene.BIMClashProperties
-
-        row = layout.row(align=True)
-        row.operator("bim.load_ifc_clashes", text="LOAD IFC CLASHES", icon="IMPORT")
-        row.operator("bim.save_ifc_clashes", text="SAVE CLASH RESULTS", icon="EXPORT")
-        layout.template_list("BIM_UL_clashes", "", props.active_clash_set, "clashes", props, "active_clash_index")
-        # bim.select_clash
-        row = layout.row(align=True)
-        row.operator("bim.select_clash", text="SELECT CLASH", icon="IMPORT")
-        row.prop(props, "sould_focus_on_clash", icon="RESTRICT_VIEW_OFF")
-
-
 class BIM_PT_smart_clash_manager(Panel):
    bl_idname = "BIM_PT_smart_clash_manager"
    bl_label = "Smart Clash Manager"
@@ -54,11 +54,11 @@ classes = (

 def register():
    bpy.types.Scene.BIMClassificationProperties = bpy.props.PointerProperty(type=prop.BIMClassificationProperties)
-    bpy.types.Object.BIMClassificationReferenceProperties = bpy.props.PointerProperty(
+    bpy.types.Scene.BIMClassificationReferenceProperties = bpy.props.PointerProperty(
        type=prop.BIMClassificationReferenceProperties
    )


 def unregister():
    del bpy.types.Scene.BIMClassificationProperties
-    del bpy.types.Object.BIMClassificationReferenceProperties
+    del bpy.types.Scene.BIMClassificationReferenceProperties
@@ -88,7 +88,7 @@ class ClassificationReferencesData(ReferencesData):
        cls.data["references"] = cls.references()
        cls.data["active_classification_library"] = cls.active_classification_library()
        cls.data["classifications"] = cls.classifications()
-        cls.data["object_type"] = "OBJECT"
+        cls.data["object_type"] = "Object"

    @classmethod
    def references(cls):
@@ -112,17 +112,21 @@ class MaterialClassificationsData(ReferencesData):
        cls.data["references"] = cls.references()
        cls.data["active_classification_library"] = cls.active_classification_library()
        cls.data["classifications"] = cls.classifications()
-        cls.data["object_type"] = "MATERIAL"
+        cls.data["object_type"] = "Material"

    @classmethod
    def references(cls):
        results = []
-        element = tool.Ifc.get_entity(bpy.context.active_object.active_material)
-        if element:
-            for reference in ifcopenshell.util.classification.get_references(element):
-                data = reference.get_info()
-                del data["ReferencedSource"]
-                results.append(data)
+
+        props = bpy.context.scene.BIMMaterialProperties
+        if props.materials and props.active_material_index < len(props.materials):
+            material = props.materials[props.active_material_index]
+            if material.ifc_definition_id:
+                element = tool.Ifc.get().by_id(material.ifc_definition_id)
+                for reference in ifcopenshell.util.classification.get_references(element):
+                    data = reference.get_info()
+                    del data["ReferencedSource"]
+                    results.append(data)
        return results


@@ -136,7 +140,7 @@ class CostClassificationsData(ReferencesData):
        cls.data["references"] = cls.references()
        cls.data["active_classification_library"] = cls.active_classification_library()
        cls.data["classifications"] = cls.classifications()
-        cls.data["object_type"] = "COST"
+        cls.data["object_type"] = "Cost"

    @classmethod
    def references(cls):
@@ -20,6 +20,8 @@ import bpy
 import json
 import ifcopenshell
 import ifcopenshell.api
+import ifcopenshell.util.classification
+import ifcopenshell.util.element
 import blenderbim.tool as tool
 import blenderbim.bim.helper
 from blenderbim.bim.ifc import IfcStore
@@ -75,26 +77,37 @@ class AddManualClassificationReference(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_manual_classification_reference"
    bl_label = "Add Manual Classification Reference"
    bl_options = {"REGISTER", "UNDO"}
+    obj: bpy.props.StringProperty()
    obj_type: bpy.props.StringProperty()

    def _execute(self, context):
-        obj = context.active_object
-        props = obj.BIMClassificationReferenceProperties
+        if self.obj_type == "Object":
+            if context.selected_objects:
+                objects = [o.name for o in context.selected_objects]
+            else:
+                objects = [context.active_object.name]
+        else:
+            objects = [self.obj]
+        props = context.scene.BIMClassificationReferenceProperties
        attributes = blenderbim.bim.helper.export_attributes(props.reference_attributes)
-        product = tool.Ifc.get_entity(obj)
-        # TODO: refactor and support material and cost item classifications
-        classification = tool.Ifc.get().by_id(int(props.classifications))
-        reference = ifcopenshell.api.run(
-            "classification.add_reference",
-            tool.Ifc.get(),
-            product=product,
-            classification=classification,
-            identification="X",
-            name="Unnamed",
-        )
-        ifcopenshell.api.run(
-            "classification.edit_reference", tool.Ifc.get(), reference=reference, attributes=attributes
-        )
+        products = [
+            tool.Ifc.get().by_id(ifc_definition_id)
+            for obj in objects
+            if (ifc_definition_id := tool.Blender.get_obj_ifc_definition_id(obj, self.obj_type, context))
+        ]
+        if products:
+            classification = tool.Ifc.get().by_id(int(props.classifications))
+            reference = ifcopenshell.api.run(
+                "classification.add_reference",
+                tool.Ifc.get(),
+                products=products,
+                classification=classification,
+                identification="X",
+                name="Unnamed",
+            )
+            ifcopenshell.api.run(
+                "classification.edit_reference", tool.Ifc.get(), reference=reference, attributes=attributes
+            )
        props.is_adding = False


@@ -148,8 +161,7 @@ class EnableAddingManualClassificationReference(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}

    def execute(self, context):
-        obj = context.active_object
-        props = obj.BIMClassificationReferenceProperties
+        props = context.scene.BIMClassificationReferenceProperties
        props.is_adding = True
        props.reference_attributes.clear()
        blenderbim.bim.helper.import_attributes2("IfcClassificationReference", props.reference_attributes)
@@ -162,8 +174,7 @@ class DisableAddingManualClassificationReference(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}

    def execute(self, context):
-        obj = context.active_object
-        props = obj.BIMClassificationReferenceProperties
+        props = context.scene.BIMClassificationReferenceProperties
        props.is_adding = False
        return {"FINISHED"}

@@ -207,6 +218,10 @@ class DisableEditingClassification(bpy.types.Operator):
 class RemoveClassification(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_classification"
    bl_label = "Remove Classification"
+    bl_description = (
+        "The classification and all of its relationships, children references, "
+        "and relationships between objects and child references will be completely removed from a project"
+    )
    bl_options = {"REGISTER", "UNDO"}
    classification: bpy.props.IntProperty()

@@ -251,8 +266,7 @@ class EnableEditingClassificationReference(bpy.types.Operator):
    obj: bpy.props.StringProperty()

    def execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
-        props = obj.BIMClassificationReferenceProperties
+        props = context.scene.BIMClassificationReferenceProperties
        props.reference_attributes.clear()
        blenderbim.bim.helper.import_attributes2(tool.Ifc.get().by_id(self.reference), props.reference_attributes)
        props.active_reference_id = self.reference
@@ -266,8 +280,7 @@ class DisableEditingClassificationReference(bpy.types.Operator):
    obj: bpy.props.StringProperty()

    def execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
-        obj.BIMClassificationReferenceProperties.active_reference_id = 0
+        context.scene.BIMClassificationReferenceProperties.active_reference_id = 0
        return {"FINISHED"}


@@ -292,20 +305,25 @@ class RemoveClassificationReference(bpy.types.Operator, tool.Ifc.Operator):
        active_reference = tool.Ifc.get().by_id(self.reference)
        identification = active_reference[1]

+        elements_by_references: dict[ifcopenshell.entity_instance, list[ifcopenshell.entity_instance]] = {}
        for obj in objects:
-            ifc_definition_id = blenderbim.bim.helper.get_obj_ifc_definition_id(context, obj, self.obj_type)
+            ifc_definition_id = tool.Blender.get_obj_ifc_definition_id(obj, self.obj_type, context)
            element = tool.Ifc.get().by_id(ifc_definition_id)
            references = ifcopenshell.util.classification.get_references(element, should_inherit=False)
            for reference in references:
                if (identification and reference[1] == identification) or (
                    not identification and reference == active_reference
                ):
-                    ifcopenshell.api.run(
-                        "classification.remove_reference",
-                        tool.Ifc.get(),
-                        reference=reference,
-                        product=element,
-                    )
+                    elements_by_references.setdefault(reference, []).append(element)
+
+        if elements_by_references:
+            for reference, products in elements_by_references.items():
+                ifcopenshell.api.run(
+                    "classification.remove_reference",
+                    tool.Ifc.get(),
+                    reference=reference,
+                    products=products,
+                )


 class EditClassificationReference(bpy.types.Operator, tool.Ifc.Operator):
@@ -315,8 +333,7 @@ class EditClassificationReference(bpy.types.Operator, tool.Ifc.Operator):
    obj: bpy.props.StringProperty()

    def _execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
-        props = obj.BIMClassificationReferenceProperties
+        props = context.scene.BIMClassificationReferenceProperties
        attributes = {}
        for attribute in props.reference_attributes:
            if attribute.is_null:
@@ -357,15 +374,17 @@ class AddClassificationReference(bpy.types.Operator, tool.Ifc.Operator):
                classification = element
                break

-        for obj in objects:
-            ifc_definition_id = blenderbim.bim.helper.get_obj_ifc_definition_id(context, obj, self.obj_type)
-            if not ifc_definition_id:
-                continue
+        products = [
+            tool.Ifc.get().by_id(ifc_definition_id)
+            for obj in objects
+            if (ifc_definition_id := tool.Blender.get_obj_ifc_definition_id(obj, self.obj_type, context))
+        ]
+        if products:
            ifcopenshell.api.run(
                "classification.add_reference",
                tool.Ifc.get(),
                reference=IfcStore.classification_file.by_id(self.reference),
-                product=tool.Ifc.get().by_id(ifc_definition_id),
+                products=products,
                classification=classification,
            )

@@ -406,14 +425,14 @@ class AddClassificationReferenceFromBSDD(bpy.types.Operator, tool.Ifc.Operator):
            classification.Location = bsdd_classification.domain_namespace_uri

        for obj in objects:
-            ifc_definition_id = blenderbim.bim.helper.get_obj_ifc_definition_id(context, obj, self.obj_type)
+            ifc_definition_id = tool.Blender.get_obj_ifc_definition_id(obj, self.obj_type, context)
            if not ifc_definition_id:
                continue
            element = tool.Ifc.get().by_id(ifc_definition_id)
            reference = ifcopenshell.api.run(
                "classification.add_reference",
                tool.Ifc.get(),
-                product=element,
+                products=[element],
                classification=classification,
                identification=bsdd_classification.reference_code,
                name=bsdd_classification.name,
@@ -118,10 +118,9 @@ class BIM_PT_classifications(Panel):
 class ReferenceUI:
    def draw_ui(self, context):
        obj = context.active_object
-        self.oprops = obj.BIMObjectProperties
        self.sprops = context.scene.BIMClassificationProperties
        self.bprops = context.scene.BIMBSDDProperties
-        self.props = obj.BIMClassificationReferenceProperties
+        self.props = context.scene.BIMClassificationReferenceProperties
        self.file = IfcStore.get_file()

        self.draw_add_ui(context)
@@ -155,7 +154,7 @@ class ReferenceUI:
            blenderbim.bim.helper.draw_attributes(self.props.reference_attributes, self.layout)
            row = self.layout.row(align=True)
            op = row.operator("bim.add_manual_classification_reference", text="Save", icon="CHECKMARK")
-            op.type = self.data.data["object_type"]
+            op.obj_type = self.data.data["object_type"]
            row.operator("bim.disable_adding_manual_classification_reference", text="", icon="CANCEL")
        else:
            row = self.layout.row()
@@ -295,28 +294,31 @@ class BIM_PT_material_classifications(Panel, ReferenceUI):
    bl_options = {"DEFAULT_CLOSED"}
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
-    bl_context = "material"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_materials"

    @classmethod
    def poll(cls, context):
        if not tool.Ifc.get():
            return False
-        try:
-            return bool(context.active_object.active_material.BIMObjectProperties.ifc_definition_id)
-        except:
-            return False
+        props = context.scene.BIMMaterialProperties
+        if props.materials and props.active_material_index < len(props.materials):
+            material = props.materials[props.active_material_index]
+            if material.ifc_definition_id:
+                return True
+        return False

    def draw(self, context):
        if not MaterialClassificationsData.is_loaded:
            MaterialClassificationsData.load()
        self.data = MaterialClassificationsData
-        self.obj = context.active_object.active_material.name
+        self.obj = ""
        self.obj_type = "Material"
        self.draw_ui(context)


 class BIM_PT_cost_classifications(Panel, ReferenceUI):
-    bl_label = "Cost Classifications"
+    bl_label = "Cost Item Classifications"
    bl_idname = "BIM_PT_cost_classifications"
    bl_options = {"DEFAULT_CLOSED"}
    bl_space_type = "PROPERTIES"
@@ -114,7 +114,7 @@ class EditObjective(bpy.types.Operator):
        ifcopenshell.api.run(
            "constraint.edit_objective",
            self.file,
-            **{"objective": self.file.by_id(props.active_constraint_id), "attributes": attributes}
+            **{"objective": self.file.by_id(props.active_constraint_id), "attributes": attributes},
        )
        bpy.ops.bim.load_objectives()
        return {"FINISHED"}
@@ -179,19 +179,17 @@ class AssignConstraint(bpy.types.Operator):
        return IfcStore.execute_ifc_operator(self, context)

    def _execute(self, context):
-        self.file = IfcStore.get_file()
+        self.file = tool.Ifc.get()
        objs = [bpy.data.objects.get(self.obj)] if self.obj else context.selected_objects
-        for obj in objs:
-            obj_id = obj.BIMObjectProperties.ifc_definition_id
-            if not obj_id:
-                continue
+        products = [self.file.by_id(obj_id) for obj in objs if (obj_id := obj.BIMObjectProperties.ifc_definition_id)]
+        if products:
            ifcopenshell.api.run(
                "constraint.assign_constraint",
                self.file,
                **{
-                    "product": self.file.by_id(obj_id),
+                    "products": products,
                    "constraint": self.file.by_id(self.constraint),
-                }
+                },
            )
        return {"FINISHED"}

@@ -207,18 +205,16 @@ class UnassignConstraint(bpy.types.Operator):
        return IfcStore.execute_ifc_operator(self, context)

    def _execute(self, context):
-        self.file = IfcStore.get_file()
+        self.file = tool.Ifc.get()
        objs = [bpy.data.objects.get(self.obj)] if self.obj else context.selected_objects
-        for obj in objs:
-            obj_id = obj.BIMObjectProperties.ifc_definition_id
-            if not obj_id:
-                continue
+        products = [self.file.by_id(obj_id) for obj in objs if (obj_id := obj.BIMObjectProperties.ifc_definition_id)]
+        if products:
            ifcopenshell.api.run(
                "constraint.unassign_constraint",
                self.file,
                **{
-                    "product": self.file.by_id(obj_id),
+                    "products": products,
                    "constraint": self.file.by_id(self.constraint),
-                }
+                },
            )
        return {"FINISHED"}
@@ -53,6 +53,10 @@ class AddContext(bpy.types.Operator, Operator):
 class RemoveContext(bpy.types.Operator, Operator):
    bl_idname = "bim.remove_context"
    bl_label = "Remove Context"
+    bl_description = (
+        "Remove representation context. Any representation geometry that is assigned to the context is also removed. "
+        "If a context is removed, then any subcontexts are also removed"
+    )
    bl_options = {"REGISTER", "UNDO"}
    context: bpy.props.IntProperty()

@@ -82,6 +82,7 @@ classes = (
    prop.CostItem,
    prop.CostItemQuantity,
    prop.CostItemType,
+    prop.ScheduleColumn,
    prop.BIMCostProperties,
    ui.BIM_PT_cost_schedules,
    ui.BIM_PT_cost_item_quantities,
@@ -19,10 +19,13 @@
 import bpy
 import ifcopenshell
 import ifcopenshell.util.cost
+import ifcopenshell.util.date
 import ifcopenshell.util.element
+import ifcopenshell.util.unit
 import blenderbim.tool as tool
 import blenderbim.bim.schema
 from ifcopenshell.util.doc import get_entity_doc, get_predefined_type_doc
+from typing import Any


 def refresh():
@@ -34,6 +37,7 @@ def refresh():
 class CostSchedulesData:
    data = {}
    is_loaded = False
+    _cost_values: dict[int, dict[str, Any]]

    @classmethod
    def load(cls):
@@ -136,7 +140,7 @@ class CostSchedulesData:
                data["UnitBasisUnitSymbol"] = "U"
            if cost_value.Category == "*":
                is_sum = True
-        cost_quantity = data["TotalCostQuantity"] or 1
+        cost_quantity = 1 if data["TotalCostQuantity"] is None else data["TotalCostQuantity"]
        if has_unit_basis:
            data["TotalCost"] = data["TotalAppliedValue"] * cost_quantity / data["UnitBasisValueComponent"]
        else:
@@ -155,6 +159,7 @@ class CostSchedulesData:
        data["UnitSymbol"] = "-"
        if cost_item.CostQuantities:
            quantity = cost_item.CostQuantities[0]
+            data["QuantityType"] = quantity.is_a()
            unit = ifcopenshell.util.unit.get_property_unit(quantity, tool.Ifc.get())
            if unit:
                data["UnitSymbol"] = ifcopenshell.util.unit.get_unit_symbol(unit)
@@ -193,10 +198,16 @@ class CostSchedulesData:
        #             data["DerivedUnitSymbol"] = "?"
        #         print("Total Cost", data["DerivedTotalCostQuantity"], cost_item.Name)

+    # TODO: dead code?
    @classmethod
-    def _get_object_quantities(cls, cost_item, element):
+    def _get_object_quantities(
+        cls, cost_item: ifcopenshell.entity_instance, element: ifcopenshell.entity_instance
+    ) -> list[int]:
        if not element.is_a("IfcObject"):
            return []
+        cost_quantities = cost_item.CostQuantities
+        if not cost_quantities:
+            return []
        results = []
        for relationship in element.IsDefinedBy:
            if not relationship.is_a("IfcRelDefinesByProperties"):
@@ -205,7 +216,7 @@ class CostSchedulesData:
            if not qto.is_a("IfcElementQuantity"):
                continue
            for prop in qto.Quantities:
-                if prop in cost_item.CostQuantities or []:
+                if prop in cost_quantities:
                    results.append(prop.id())
        return results

@@ -73,7 +73,7 @@ class RemoveCostSchedule(bpy.types.Operator, tool.Ifc.Operator):
    cost_schedule: bpy.props.IntProperty()

    def _execute(self, context):
-        core.remove_cost_schedule(tool.Ifc, cost_schedule=tool.Ifc.get().by_id(self.cost_schedule))
+        core.remove_cost_schedule(tool.Ifc, tool.Cost, cost_schedule=tool.Ifc.get().by_id(self.cost_schedule))


 class EnableEditingCostSchedule(bpy.types.Operator):
@@ -223,36 +223,40 @@ class EditCostItem(bpy.types.Operator, tool.Ifc.Operator):

 class AssignCostItemType(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.assign_cost_item_type"
-    bl_label = "Assign Cost Item Type Product"
+    bl_label = "Assign Cost Item To Product Types"
+    bl_description = "Assign cost item to currently selected or active product types"
    bl_options = {"REGISTER", "UNDO"}
    cost_item: bpy.props.IntProperty()
    prop_name: bpy.props.StringProperty()

    def _execute(self, context):
-        core.assign_cost_item_type(
+        product_types = core.assign_cost_item_type(
            tool.Ifc,
            tool.Cost,
            tool.Spatial,
            cost_item=tool.Ifc.get().by_id(self.cost_item),
            prop_name=self.prop_name,  # TODO: REVIEW PROP_NAME USABILITY
        )
+        self.report({"INFO"}, f"Cost item was assigned to {len(product_types)} product types.")


 class UnassignCostItemType(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.unassign_cost_item_type"
    bl_label = "Unassign Cost Item Type"
+    bl_description = "Unassign cost item from currently selected or active product types"
    bl_options = {"REGISTER", "UNDO"}
    cost_item: bpy.props.IntProperty()
    related_object: bpy.props.IntProperty()

    def _execute(self, context):
-        core.unassign_cost_item_type(
+        product_types = core.unassign_cost_item_type(
            tool.Ifc,
            tool.Cost,
            tool.Spatial,
            cost_item=tool.Ifc.get().by_id(self.cost_item),
-            product_types=[tool.Ifc.get().by_id(self.related_object)] if self.related_object else [],
+            product_types=[tool.Ifc.get().by_id(self.related_object)] if self.related_object else None,
        )
+        self.report({"INFO"}, f"Cost item was unassigned from {len(product_types)} product types.")
        return {"FINISHED"}


@@ -287,9 +291,11 @@ class UnassignCostItemQuantity(bpy.types.Operator, tool.Ifc.Operator):
            tool.Ifc,
            tool.Cost,
            cost_item=tool.Ifc.get().by_id(self.cost_item),
-            products=[tool.Ifc.get().by_id(self.related_object)]
-            if self.related_object
-            else tool.Spatial.get_selected_products(),
+            products=(
+                [tool.Ifc.get().by_id(self.related_object)]
+                if self.related_object
+                else tool.Spatial.get_selected_products()
+            ),
        )


@@ -509,7 +515,7 @@ class SelectCostScheduleProducts(bpy.types.Operator):


 class ImportCostScheduleCsv(bpy.types.Operator, ImportHelper, tool.Ifc.Operator):
-    bl_idname = "import_cost_schedule_csv.bim"
+    bl_idname = "bim.import_cost_schedule_csv"
    bl_label = "Import Cost Schedule CSV"
    bl_options = {"REGISTER", "UNDO"}
    filename_ext = ".csv"
@@ -527,6 +533,13 @@ class AddCostColumn(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    name: bpy.props.StringProperty()

+    @classmethod
+    def poll(cls, context):
+        if not context.scene.BIMCostProperties.cost_column:
+            cls.poll_message_set("Cost column name is empty")
+            return False
+        return True
+
    def execute(self, context):
        core.add_cost_column(tool.Cost, self.name)
        return {"FINISHED"}
@@ -538,7 +551,7 @@ class RemoveCostColumn(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    name: bpy.props.StringProperty()

-    def _execute(self, context):
+    def execute(self, context):
        core.remove_cost_column(tool.Cost, self.name)
        return {"FINISHED"}

@@ -656,13 +669,17 @@ class ExportCostSchedules(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Export a cost schedule to a CSV, XSLX OR ODS file"
    cost_schedule: bpy.props.IntProperty()
-    format: bpy.props.EnumProperty("Format", items=(("CSV", "CSV", ""), ("XLSX", "XLSX", ""), ("ODS", "ODS", "")))
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    format: bpy.props.EnumProperty(name="Format", items=(("CSV", "CSV", ""), ("XLSX", "XLSX", ""), ("ODS", "ODS", "")))
+    directory: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_folder: bpy.props.BoolProperty(
+        name="Filter Folders",
+        default=True,
+    )

    def execute(self, context):
        cost_schedule = tool.Ifc.get().by_id(self.cost_schedule) if self.cost_schedule else None
        r = core.export_cost_schedules(
-            tool.Cost, filepath=self.filepath, format=self.format, cost_schedule=cost_schedule
+            tool.Cost, filepath=self.directory, format=self.format, cost_schedule=cost_schedule
        )
        if isinstance(r, str):
            self.report({"ERROR"}, r)
@@ -676,6 +693,7 @@ class ExportCostSchedules(bpy.types.Operator):
    def draw(self, context):
        self.layout.label(text="Choose a format")
        self.layout.prop(self, "format")
+        self.layout.label(text="Select a directory.")


 class ClearCostItemAssignments(bpy.types.Operator, tool.Ifc.Operator):
@@ -175,6 +175,10 @@ def update_active_cost_item_resources(self, context):
    bpy.ops.bim.load_cost_item_resource_quantities()


+class ScheduleColumn(PropertyGroup):
+    schedule_id: IntProperty()
+
+
 class BIMCostProperties(PropertyGroup):
    cost_schedule_predefined_types: EnumProperty(
        items=get_schedule_predefined_types, name="Predefined Type", default=None
@@ -210,9 +214,14 @@ class BIMCostProperties(PropertyGroup):
    cost_value_attributes: CollectionProperty(name="Cost Value Attributes", type=Attribute)
    cost_value_formula: StringProperty(name="Cost Value Formula")
    cost_column: StringProperty(name="Cost Column")
-    should_show_column_ui: BoolProperty(name="Should Show Column UI", default=False)
+    should_show_column_ui: BoolProperty(
+        name="Should Show Column UI",
+        description="Display UI for adding cost schedule columns, column names represent a category for cost item values",
+        default=False,
+    )
    should_show_currency_ui: BoolProperty(name="Should Show Currency UI", default=False)
-    columns: CollectionProperty(name="Columns", type=StrProperty)
+    columns: CollectionProperty(name="Active Schedule Columns", type=StrProperty)
+    columns_storage: CollectionProperty(name="Columns", type=ScheduleColumn)
    active_column_index: IntProperty(name="Active Column Index")
    cost_item_products: CollectionProperty(name="Cost Item Products", type=CostItemQuantity)
    active_cost_item_product_index: IntProperty(name="Active Cost Item Product Index")
@@ -21,6 +21,7 @@ import blenderbim.bim.module.cost.prop as CostProp
 from bpy.types import Panel, UIList
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.cost.data import CostSchedulesData
+from typing import Any


 class BIM_PT_cost_schedules(Panel):
@@ -53,7 +54,7 @@ class BIM_PT_cost_schedules(Panel):
                row.label(text="No Cost Schedules found.", icon="TEXT")

            row.operator("bim.add_cost_schedule", icon="ADD", text="")
-            row.operator("import_cost_schedule_csv.bim",icon="IMPORT",text="")
+            row.operator("bim.import_cost_schedule_csv",icon="IMPORT",text="")

        for schedule in CostSchedulesData.data["schedules"]:
            self.draw_cost_schedule_ui(schedule)
@@ -178,24 +179,33 @@ class BIM_PT_cost_schedules(Panel):
            "active_cost_item_index",
        )
        if self.props.active_cost_item_id:
+            cost_item = CostSchedulesData.data["cost_items"][ifc_definition_id]
            if self.props.cost_item_editing_type == "ATTRIBUTES":
                self.draw_editable_cost_item_attributes_ui()
            elif self.props.cost_item_editing_type == "QUANTITIES":
-                self.draw_editable_cost_item_quantities_ui()
+                self.draw_editable_cost_item_quantities_ui(cost_item)
            elif self.props.cost_item_editing_type == "VALUES":
                self.draw_editable_cost_item_values_ui()

    def draw_editable_cost_item_attributes_ui(self):
        blenderbim.bim.helper.draw_attributes(self.props.cost_item_attributes, self.layout)

-    def draw_editable_cost_item_quantities_ui(self):
+    def draw_editable_cost_item_quantities_ui(self, cost_item: dict[str, Any]):
+        quantities = CostSchedulesData.data["cost_quantities"]
        row = self.layout.row(align=True)
-        row.prop(self.props, "quantity_types", text="")
+        # In IFC, all quantities of IfcCostTime should have 1 type.
+        if quantities:
+            quantity_class = cost_item["QuantityType"]
+            row.label(text=quantity_class)
+        else:
+            row.prop(self.props, "quantity_types", text="")
+            quantity_class = self.props.quantity_types
+
        op = row.operator("bim.add_cost_item_quantity", text="", icon="ADD")
        op.cost_item = self.props.active_cost_item_id
-        op.ifc_class = self.props.quantity_types
+        op.ifc_class = quantity_class

-        for quantity in CostSchedulesData.data["cost_quantities"]:
+        for quantity in quantities:
            row = self.layout.row(align=True)
            row.label(text=quantity["name"])
            row.label(text=quantity["value"])
@@ -634,7 +644,7 @@ class BIM_UL_cost_items_trait:
        layout.label(text=cost_item["UnitBasisUnitSymbol"])

    def draw_total_quantity_column(self, layout, cost_item):
-        if cost_item["TotalCostQuantity"]:
+        if cost_item["TotalCostQuantity"] is not None:
            label = "{0:.2f}".format(cost_item["TotalCostQuantity"]) + f" {cost_item['UnitSymbol'] or '-'}"
            layout.label(text=label)
        else:
@@ -745,9 +755,11 @@ class BIM_UL_product_cost_items(UIList):
 class BIM_PT_Costing_Tools(Panel):
    bl_label = "5D Tools"
    bl_idname = "BIM_PT_Costing_Tools"
-    bl_space_type = "VIEW_3D"
-    bl_region_type = "UI"
-    bl_category = "4D/5D Toolkit"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_tab_cost"

    def draw(self, context):
        self.props = context.scene.BIMCostProperties
@@ -29,13 +29,9 @@ def register():
    if not bpy.app.background:
        bpy.utils.register_tool(workspace.CoveringTool, after={"bim.structural_tool"}, separator=False, group=False)
    bpy.types.Scene.BIMCoveringProperties = bpy.props.PointerProperty(type=prop.BIMCoveringProperties)
-#    bpy.types.Object.BIMObjectSpatialProperties = bpy.props.PointerProperty(type=prop.BIMObjectSpatialProperties)
-#    bpy.types.Scene.BIMSpatialManagerProperties = bpy.props.PointerProperty(type=prop.BIMSpatialManagerProperties)


 def unregister():
    if not bpy.app.background:
        bpy.utils.unregister_tool(workspace.CoveringTool)
    del bpy.types.Scene.BIMCoveringProperties
-#    del bpy.types.Object.BIMObjectSpatialProperties
-#    del bpy.types.Scene.BIMSpatialManagerProperties
@@ -107,59 +107,88 @@ class CoveringToolUI:
 #                elif element and bpy.context.selected_objects and element.is_a("IfcSpace"):
 #                    op. = row.operator("bim.add_istance_flooring_from_spaces"):

-            if (type_material_usage == "IfcMaterialLayerSet" and
-                not bpy.context.selected_objects):
-                row = cls.layout.row(align=True)
-                row.label(text="", icon="EVENT_SHIFT")
-                row.label(text="", icon="EVENT_A")
-                if tool.Ifc.get_entity(collection_obj):
-                    if AuthoringData.data["predefined_type"] == "FLOORING":
-                        op = row.operator("bim.add_instance_flooring_covering_from_cursor")
-                    elif AuthoringData.data["predefined_type"] == "CEILING":
-                        op = row.operator("bim.add_instance_ceiling_covering_from_cursor")
-                    else:
-                        op = row.operator("bim.add_constr_type_instance", text="Add")
-                        op.from_invoke = True
-                        if cls.props.relating_type_id.isnumeric():
-                            op.relating_type_id = int(cls.props.relating_type_id)
-
-                else:
-                    op = row.operator("bim.add_constr_type_instance", text="Add")
-                    op.from_invoke = True
-                    if cls.props.relating_type_id.isnumeric():
-                        op.relating_type_id = int(cls.props.relating_type_id)
-
-            elif (AuthoringData.data["predefined_type"] == "FLOORING" and
-                type_material_usage == "IfcMaterialLayerSet" and
-                element and
-                bpy.context.selected_objects and
-                element.is_a("IfcWall")):
-                    row = cls.layout.row(align=True)
-                    row.label(text="", icon="EVENT_SHIFT")
-                    row.label(text="", icon="EVENT_A")
-                    op = row.operator("bim.add_instance_flooring_coverings_from_walls")
-
-            elif (AuthoringData.data["predefined_type"] == "CEILING" and
-                type_material_usage == "IfcMaterialLayerSet" and
-                element and
-                bpy.context.selected_objects and
-                element.is_a("IfcWall")):
-                    row = cls.layout.row(align=True)
-                    row.label(text="", icon="EVENT_SHIFT")
-                    row.label(text="", icon="EVENT_A")
-                    op = row.operator("bim.add_instance_ceiling_coverings_from_walls")
-
-            elif (element and
-                  bpy.context.selected_objects and
-                  element.is_a("IfcCovering") and
-#                  AuthoringData.data["predefined_type"] == "FLOORING" and
-                  AuthoringData.data["active_material_usage"] == "LAYER3"):
-                row = cls.layout.row(align=True)
-                row.label(text="", icon="EVENT_SHIFT")
-                row.label(text="", icon="EVENT_G")
-                op = row.operator("bim.regen_selected_covering_object")
+#            if (type_material_usage == "IfcMaterialLayerSet" and
+#                not bpy.context.selected_objects):
+#                row = cls.layout.row(align=True)
+#                row.label(text="", icon="EVENT_SHIFT")
+#                row.label(text="", icon="EVENT_A")
+#                if tool.Ifc.get_entity(collection_obj):
+#                    if AuthoringData.data["predefined_type"] == "FLOORING":
+#                        op = row.operator("bim.add_instance_flooring_covering_from_cursor")
+#                    elif AuthoringData.data["predefined_type"] == "CEILING":
+#                        op = row.operator("bim.add_instance_ceiling_covering_from_cursor")
+#                    else:
+#                        op = row.operator("bim.add_constr_type_instance", text="Add")
+#                        op.from_invoke = True
+#                        if cls.props.relating_type_id.isnumeric():
+#                            op.relating_type_id = int(cls.props.relating_type_id)
+#
+#                else:
+#                    op = row.operator("bim.add_constr_type_instance", text="Add")
+#                    op.from_invoke = True
+#                    if cls.props.relating_type_id.isnumeric():
+#                        op.relating_type_id = int(cls.props.relating_type_id)
+#
+#            elif (AuthoringData.data["predefined_type"] == "FLOORING" and
+#                type_material_usage == "IfcMaterialLayerSet" and
+#                element and
+#                bpy.context.selected_objects and
+#                element.is_a("IfcWall")):
+#                    row = cls.layout.row(align=True)
+#                    row.label(text="", icon="EVENT_SHIFT")
+#                    row.label(text="", icon="EVENT_A")
+#                    op = row.operator("bim.add_instance_flooring_coverings_from_walls")
+#
+#            elif (AuthoringData.data["predefined_type"] == "CEILING" and
+#                type_material_usage == "IfcMaterialLayerSet" and
+#                element and
+#                bpy.context.selected_objects and
+#                element.is_a("IfcWall")):
+#                    row = cls.layout.row(align=True)
+#                    row.label(text="", icon="EVENT_SHIFT")
+#                    row.label(text="", icon="EVENT_A")
+#                    op = row.operator("bim.add_instance_ceiling_coverings_from_walls")
+#
+#            elif (element and
+#                  bpy.context.selected_objects and
+#                  element.is_a("IfcCovering") and
+##                  AuthoringData.data["predefined_type"] == "FLOORING" and
+#                  AuthoringData.data["active_material_usage"] == "LAYER3"):
+#                row = cls.layout.row(align=True)
+#                row.label(text="", icon="EVENT_SHIFT")
+#                row.label(text="", icon="EVENT_G")
+#                op = row.operator("bim.regen_selected_covering_object")


+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            op = row.operator("bim.add_constr_type_instance", text="Add")
+
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            op = row.operator("bim.add_instance_flooring_covering_from_cursor")
+
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            op = row.operator("bim.add_instance_ceiling_covering_from_cursor")
+
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            op = row.operator("bim.add_instance_flooring_coverings_from_walls")
+
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            op = row.operator("bim.add_instance_ceiling_coverings_from_walls")
+
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_G")
+            op = row.operator("bim.regen_selected_covering_object")

 #            elif AuthoringData.data["predefined_type"] == "CEILING":
 #                row = cls.layout.row(align=True)
@@ -174,14 +203,14 @@ class CoveringToolUI:
 #                    op.from_invoke = True
 #                    if cls.props.relating_type_id.isnumeric():
 #                        op.relating_type_id = int(cls.props.relating_type_id)
-            else:
-                row = cls.layout.row(align=True)
-                row.label(text="", icon="EVENT_SHIFT")
-                row.label(text="", icon="EVENT_A")
-                op = row.operator("bim.add_constr_type_instance", text="Add")
-                op.from_invoke = True
-                if cls.props.relating_type_id.isnumeric():
-                    op.relating_type_id = int(cls.props.relating_type_id)
+#            else:
+#                row = cls.layout.row(align=True)
+#                row.label(text="", icon="EVENT_SHIFT")
+#                row.label(text="", icon="EVENT_A")
+#                op = row.operator("bim.add_constr_type_instance", text="Add")
+#                op.from_invoke = True
+#                if cls.props.relating_type_id.isnumeric():
+#                    op.relating_type_id = int(cls.props.relating_type_id)

    @classmethod
    def draw_type_selection_interface(cls):
@@ -191,11 +220,11 @@ class CoveringToolUI:
            row = cls.layout.row(align=True)
            row.label(text="", icon="FILE_3D")
            prop_with_search(row, cls.props, "relating_type_id", text="")
-            row.operator("bim.launch_type_manager", icon="LIGHTPROBE_GRID", text="")
+            row.operator("bim.launch_type_manager", icon=tool.Blender.TYPE_MANAGER_ICON, text="")
        else:
            row.label(text=f"No {AuthoringData.data['ifc_element_type']} Found", icon="ERROR")
            row = cls.layout.row()
-            row.operator("bim.launch_type_manager", icon="LIGHTPROBE_GRID", text="Launch Type Manager")
+            row.operator("bim.launch_type_manager", icon=tool.Blender.TYPE_MANAGER_ICON, text="Launch Type Manager")

    @classmethod
    def draw_basic_bim_tool_interface(cls):
@@ -23,6 +23,7 @@ import ifccsv
 import logging
 import tempfile
 import ifcopenshell
+import ifcopenshell.util.selector
 import blenderbim.tool as tool
 import blenderbim.bim.module.drawing.scheduler as scheduler
 from blenderbim.bim.ifc import IfcStore
@@ -72,7 +73,7 @@ class ReorderCsvAttribute(bpy.types.Operator):
    def execute(self, context):
        old = context.scene.CsvProperties.csv_attributes[self.old_index]
        new = context.scene.CsvProperties.csv_attributes[self.new_index]
-        props = ["name", "header", "sort", "group", "varies_value", "summary"]
+        props = ["name", "header", "sort", "group", "varies_value", "summary", "formatting"]
        for prop in props:
            value = getattr(new, prop)
            setattr(new, prop, getattr(old, prop))
@@ -246,6 +247,7 @@ class ExportIfcCsv(bpy.types.Operator):
        if props.format != "csv" and props.should_generate_svg:
            schedule_creator = scheduler.Scheduler()
            schedule_creator.schedule(self.filepath, tool.Drawing.get_path_with_ext(self.filepath, "svg"))
+        self.report({"INFO"}, f"Data is exported to {props.format.upper()}.")
        return {"FINISHED"}


@@ -285,6 +287,7 @@ class ImportIfcCsv(bpy.types.Operator):
        if not props.should_load_from_memory:
            ifc_file.write(props.csv_ifc_file)
        refresh_ui_data()
+        self.report({"INFO"}, "Data is imported to IFC.")
        return {"FINISHED"}


@@ -24,22 +24,23 @@ classes = (
    operator.CopyDebugInformation,
    operator.CreateAllShapes,
    operator.CreateShapeFromStepId,
+    operator.DebugActiveDrawing,
    operator.InspectFromObject,
    operator.InspectFromStepId,
    operator.OverrideDisplayType,
    operator.ParseExpress,
+    operator.PipInstall,
    operator.PrintIfcFile,
    operator.PrintObjectPlacement,
+    operator.PrintUnusedElementStats,
    operator.ProfileImportIFC,
    operator.PurgeHdf5Cache,
-    operator.PurgeIfcLinks,
+    operator.PurgeUnusedElementsByClass,
    operator.RewindInspector,
    operator.SelectExpressFile,
    operator.SelectHighPolygonMeshes,
    operator.SelectHighestPolygonMeshes,
    operator.ValidateIfcFile,
-    operator.PrintUnusedElementStats,
-    operator.PurgeUnusedElementsByClass,
    prop.BIMDebugProperties,
    ui.BIM_PT_debug,
 )
@@ -17,51 +17,33 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

 import os
+import sys
 import bpy
 import time
+import random
 import logging
 import platform
 import subprocess
-import addon_utils
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.element
 import ifcopenshell.util.placement
 import ifcopenshell.util.representation
 import blenderbim.tool as tool
 import blenderbim.core.debug as core
 import blenderbim.bim.handler
 import blenderbim.bim.import_ifc as import_ifc
-import blenderbim.tool as tool
+from blenderbim import get_debug_info, format_debug_info
 from blenderbim.bim.ifc import IfcStore


 class CopyDebugInformation(bpy.types.Operator):
    bl_idname = "bim.copy_debug_information"
    bl_label = "Copy Debug Information"
-    bl_description = "Copies debugging information to your clipboard for use in bugreports"
+    bl_description = "Copies debugging information to your clipboard for use in bug reports"

    def execute(self, context):
-        version = ".".join(
-            [
-                str(x)
-                for x in [
-                    addon.bl_info.get("version", (-1, -1, -1))
-                    for addon in addon_utils.modules()
-                    if addon.bl_info["name"] == "BlenderBIM"
-                ][0]
-            ]
-        )
-        info = {
-            "os": platform.system(),
-            "os_version": platform.version(),
-            "python_version": platform.python_version(),
-            "architecture": platform.architecture(),
-            "machine": platform.machine(),
-            "processor": platform.processor(),
-            "blender_version": bpy.app.version_string,
-            "blenderbim_version": version,
-            "ifc": False,
-        }
-
+        info = get_debug_info()
        if tool.Ifc.get():
            info.update(
                {
@@ -72,17 +54,15 @@ class CopyDebugInformation(bpy.types.Operator):
                }
            )

-        # Format it in a readable way
-        text = "\n".join(f"{k}: {v}" for k, v in info.items())
-        print(text)
+        text = format_debug_info(info)

-        if platform.system() == "Windows":
-            command = "echo | set /p nul=" + text.strip()
-        elif platform.system() == "Darwin":  # for MacOS
-            command = 'printf "' + text.strip().replace("\n", "\\n").replace('"', "") + '" | pbcopy'
-        else:  # Linux
-            command = 'printf "' + text.strip().replace("\n", "\\n").replace('"', "") + '" | xclip -selection clipboard'
-        subprocess.run(command, shell=True, check=True)
+        text_with_backticks = f"```\n{text}\n```"
+
+        print("-" * 80)
+        print(text_with_backticks)
+        print("-" * 80)
+
+        context.window_manager.clipboard = text_with_backticks
        return {"FINISHED"}


@@ -100,10 +80,11 @@ class PrintIfcFile(bpy.types.Operator):
        return {"FINISHED"}


-class PurgeIfcLinks(bpy.types.Operator):
-    bl_idname = "bim.purge_ifc_links"
-    bl_label = "Purge IFC Links"
-    bl_description = "Purge all definitions and references from the file.\nWarning : Cannot be undone."
+class ConvertToBlender(bpy.types.Operator):
+    bl_idname = "bim.convert_to_blender"
+    bl_label = "Convert To Blender File"
+    bl_description = "Removes all IFC data and revert to basic Blender objects.\nWarning : Cannot be undone."
+    bl_options = {"REGISTER", "UNDO"}

    def execute(self, context):
        for obj in bpy.data.objects:
@@ -112,7 +93,8 @@ class PurgeIfcLinks(bpy.types.Operator):
                if obj.data:
                    obj.data.BIMMeshProperties.ifc_definition_id = 0
        for material in bpy.data.materials:
-            material.BIMMaterialProperties.ifc_style_id = False
+            material.BIMObjectProperties.ifc_definition_id = 0
+            material.BIMMaterialProperties.ifc_style_id = 0
        context.scene.BIMProperties.ifc_file = ""
        context.scene.BIMDebugProperties.attributes.clear()
        IfcStore.purge()
@@ -120,26 +102,6 @@ class PurgeIfcLinks(bpy.types.Operator):
        return {"FINISHED"}


-class ConvertToBlender(bpy.types.Operator):
-    bl_idname = "bim.convert_to_blender"
-    bl_label = "Convert To Blender File"
-    bl_description = "Removes all IFC data, and converts the file to a simple Blender file."
-    bl_options = {"REGISTER", "UNDO"}
-
-    def execute(self, context):
-        for o in bpy.data.objects:
-            if o.type in {"MESH", "EMPTY"}:
-                o.BIMObjectProperties.ifc_definition_id = 0
-                if o.data:
-                    o.data.BIMMeshProperties.ifc_definition_id = 0
-        for m in bpy.data.materials:
-            m.BIMMaterialProperties.ifc_style_id = False
-        bpy.context.scene.BIMProperties.ifc_file = ""
-        IfcStore.purge()
-        blenderbim.bim.handler.refresh_ui_data()
-        return {"FINISHED"}
-
-
 class ValidateIfcFile(bpy.types.Operator):
    bl_idname = "bim.validate_ifc_file"
    bl_label = "Validate IFC File"
@@ -623,3 +585,140 @@ class PurgeUnusedElementsByClass(bpy.types.Operator, tool.Ifc.Operator):
                print("Finished 20 batches. Manually stopping in case of infinite loop.")
        self.report({"INFO"}, f"Auto purged {total_purged} orphaned elements")
        tool.Ifc.get().write(self.filepath)
+
+
+class PipInstall(bpy.types.Operator):
+    bl_idname = "bim.pip_install"
+    bl_label = "Pip Install"
+    bl_description = "Installs a package from PyPI"
+    name: bpy.props.StringProperty()
+
+    def execute(self, context):
+        import blenderbim.bim
+
+        target = [p for p in sys.path if p.endswith("packages") and "addons" in p][0]
+        py_exec = str(sys.executable)
+
+        print("Detected executable:", py_exec)
+        print("Installing to:", target)
+
+        subprocess.call([py_exec, "-m", "ensurepip", "--user"])
+        subprocess.call([py_exec, "-m", "pip", "install", "--upgrade", "pip"])
+        # Trusted host to make things simpler due to some enterprise network restrictions
+        subprocess.call(
+            [
+                py_exec,
+                "-m",
+                "pip",
+                "install",
+                f"--target={target}",
+                "--upgrade",
+                self.name,
+                "--trusted-host",
+                "pypi.org",
+                "--trusted-host",
+                "files.pythonhosted.org",
+            ]
+        )
+        return {"FINISHED"}
+
+
+class DebugActiveDrawing(bpy.types.Operator):
+    bl_idname = "bim.debug_active_drawing"
+    bl_label = "Search Active Drawing For Failing Elements"
+    bl_description = (
+        "Will iterate over all visible drawing's objects, trying to narrow down the list of possible failing objects"
+    )
+
+    def execute(self, context: bpy.types.Context):
+        props = context.scene.DocProperties
+        drawing_item = props.drawings[props.active_drawing_index]
+        drawing = tool.Ifc.get().by_id(drawing_item.ifc_definition_id)
+
+        GREEN = "\033[92m"
+        CYAN = "\033[96m"
+        END = "\033[0m"
+        ATTEMPS = 10
+
+        # run create drawing with sync for once
+        # to make sure everything is actually in sync
+        try:
+            bpy.ops.bim.create_drawing(sync=True)
+        except:
+            pass
+        else:
+            self.report({"INFO"}, "No errors creating drawing, nothing to investigate.")
+            return {"FINISHED"}
+
+        all_elements = [e for obj in context.visible_objects if (e := tool.Ifc.get_entity(obj))]
+        all_elements = set(all_elements)
+
+        original_exclude = ifcopenshell.util.element.get_pset(drawing, "EPset_Drawing", "Exclude")
+        pset = tool.Pset.get_element_pset(drawing, "EPset_Drawing")
+
+        def drawing_fails_to_load(chunk_to_include: set) -> bool:
+            current_elements = all_elements - chunk_to_include
+            excluded_guids = ", ".join([e.GlobalId for e in current_elements if hasattr(e, "GlobalId")])
+            tool.Ifc.run("pset.edit_pset", pset=pset, properties={"Exclude": f"{original_exclude}, {excluded_guids}"})
+
+            try:
+                bpy.ops.bim.create_drawing(sync=False)
+                result = False
+            except Exception as e:
+                # print(e)
+                result = True
+
+            tool.Ifc.run("pset.edit_pset", pset=pset, properties={"Exclude": original_exclude})
+            return result
+
+        def test_elements(elements: list[ifcopenshell.entity_instance], attempts: int = ATTEMPS) -> None:
+            print(f"{CYAN}processing {len(elements)} elements{END}")
+            if not elements:
+                print(f"Empty list of elements, will stop...")
+                return
+
+            n_elements = len(elements)
+            middle = int(n_elements / 2)
+            chunk1, chunk2 = elements[:middle], elements[middle:]
+            test_chunk_1 = drawing_fails_to_load(set(chunk1))
+            test_chunk_2 = drawing_fails_to_load(set(chunk2))
+
+            if (
+                # both chunks do not fail anymore
+                (not test_chunk_1 and not test_chunk_2)
+                # or we have 1 element chunk that is still failing
+                or (test_chunk_1 and not chunk2)
+                or (test_chunk_2 and not chunk1)
+            ):
+                if attempts == 0 or n_elements in (1, 2):
+                    print(f"{GREEN}Couldn't narrow it down any further.{END}")
+                    print(f"It's some of the {n_elements} elements:")
+                    print(elements)
+
+                    print("Let's test excluding them...")
+                    for element in elements:
+                        test = drawing_fails_to_load(all_elements - {element})
+                        if test:
+                            print(f"{CYAN}Excluding element didn't fixed the drawing: {END}")
+                            print(element)
+                        else:
+                            print(f"{GREEN}Excluding element fixed the drawing: {END}")
+                            print(element)
+                else:
+                    print(f"{CYAN}Will try to reshuffle elements and try again, attempt {ATTEMPS-attempts+1}/{ATTEMPS}")
+                    attempts -= 1
+                    random.shuffle(elements)
+                    test_elements(elements, attempts)
+                return
+
+            # if chunk fails we need to investigate it further
+            if test_chunk_1:
+                test_elements(chunk1)
+
+            if test_chunk_2:
+                test_elements(chunk2)
+
+        test_elements(list(all_elements))
+
+        self.report({"INFO"}, "See system console for the results")
+        return {"FINISHED"}
@@ -51,3 +51,4 @@ class BIMDebugProperties(PropertyGroup):
        default="BOUNDS",
    )
    ifc_class_purge: StringProperty(name="Unused Elements IFC Class", default="")
+    package_name: StringProperty(name="Package Name", default="")
@@ -44,6 +44,10 @@ class BIM_PT_debug(Panel):
        row.operator("bim.parse_express", icon="IMPORT", text="")
        row.operator("bim.select_express_file", icon="FILE_FOLDER", text="")

+        row = self.layout.row(align=True)
+        row.prop(props, "package_name", text="")
+        row.operator("bim.pip_install", icon="EVENT_PAGEDOWN").name = props.package_name
+
        row = layout.row()
        row.operator("bim.reload_ifc_file", text="Incrementally Reload Changes")

@@ -56,9 +60,6 @@ class BIM_PT_debug(Panel):
        row = layout.row()
        row.operator("bim.purge_hdf5_cache")

-        row = layout.row()
-        row.operator("bim.purge_ifc_links")
-
        row = layout.row()
        row.operator("bim.update_representation", text="Manually Save Representation")

@@ -71,6 +72,9 @@ class BIM_PT_debug(Panel):
        row = layout.row()
        row.operator("bim.profile_import_ifc")

+        row = layout.row()
+        row.operator("bim.debug_active_drawing")
+
        row = layout.split(factor=0.5, align=True)
        row.operator("bim.create_shape_from_step_id").should_include_curves = False
        row.operator("bim.create_shape_from_step_id", text="", icon="IPO_ELASTIC").should_include_curves = True
@@ -38,6 +38,7 @@ class DiffData:
        cls.data["total_deleted"] = cls.total_deleted()
        cls.data["total_changed"] = cls.total_changed()
        cls.data["changes"] = cls.changes()
+        cls.data["saved_searches"] = cls.saved_searches()
        cls.is_loaded = True

    @classmethod
@@ -84,3 +85,18 @@ class DiffData:
        elif element.GlobalId in diff["deleted"]:
            changes["Deleted"] = True
        return changes
+
+    @classmethod
+    def saved_searches(cls):
+        if not tool.Ifc.get():
+            return []
+        groups = tool.Ifc.get().by_type("IfcGroup")
+        results = []
+        for group in groups:
+            try:
+                data = json.loads(group.Description)
+                if isinstance(data, dict) and data.get("type", None) == "BBIM_Search" and data.get("query", None):
+                    results.append(group)
+            except:
+                pass
+        return [(str(g.id()), g.Name or "Unnamed", "") for g in sorted(results, key=lambda x: x.Name or "Unnamed")]
@@ -135,6 +135,7 @@ class ExecuteIfcDiff(bpy.types.Operator):
    bl_label = "Execute IFC Diff"
    filename_ext = ".json"
    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_glob: bpy.props.StringProperty(default="*.json", options={"HIDDEN"})

    def invoke(self, context, event):
        self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".json")
@@ -162,7 +163,7 @@ class ExecuteIfcDiff(bpy.types.Operator):
            new = ifcopenshell.open(self.props.new_file)

        relationships = [r.relationship for r in self.props.diff_relationships]
-        query = self.props.diff_filter_elements
+        query = tool.Search.export_filter_query(self.props.filter_groups) or None

        ifc_diff = ifcdiff.IfcDiff(old, new, relationships=relationships, filter_elements=query)
        ifc_diff.diff()
@@ -17,7 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

 import bpy
-from blenderbim.bim.prop import StrProperty
+from blenderbim.bim.prop import StrProperty, BIMFilterGroup
 from blenderbim.bim.module.diff.data import DiffData
 from bpy.types import PropertyGroup
 from bpy.props import (
@@ -48,7 +48,7 @@ class DiffProperties(PropertyGroup):
    old_file: StringProperty(default="", name="Old IFC File")
    new_file: StringProperty(default="", name="New IFC File")
    diff_relationships: CollectionProperty(type=Relationships, name="Relationships")
-    diff_filter_elements: StringProperty(default="", name="Filter")
+    filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")
    should_load_changed_elements: BoolProperty(name="Load Changed Elements", default=True)
    active_file: EnumProperty(
        items=[
@@ -19,8 +19,8 @@
 from bpy.types import Panel
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.diff.data import DiffData
+import blenderbim.bim.helper
 import blenderbim.tool as tool
-import json


 class BIM_PT_diff(Panel):
@@ -93,9 +93,7 @@ class BIM_PT_diff(Panel):
            remove.collection = "diff_relationships"
            remove.index = index

-        row = layout.row(align=True)
-        row.prop(props, "diff_filter_elements")
-        row.operator("bim.ifc_selector", icon="FILTER", text="")
+        blenderbim.bim.helper.draw_filter(self.layout, props.filter_groups, DiffData, "diff")

        row = layout.row()
        row.operator("bim.execute_ifc_diff")
@@ -41,6 +41,7 @@ classes = (
    operator.CleanWireframes,
    operator.ContractSheet,
    operator.ContractTargetView,
+    operator.ConvertSVGToDXF,
    operator.CreateDrawing,
    operator.CreateSheets,
    operator.DisableAddAnnotationType,
@@ -126,7 +127,7 @@ def register():
    bpy.types.Object.BIMAssignedProductProperties = bpy.props.PointerProperty(type=prop.BIMAssignedProductProperties)
    bpy.types.Object.BIMTextProperties = bpy.props.PointerProperty(type=prop.BIMTextProperties)
    bpy.types.TextCurve.BIMTextProperties = bpy.props.PointerProperty(type=prop.BIMTextProperties)
-    bpy.app.handlers.load_post.append(handler.toggleDecorationsOnLoad)
+    bpy.app.handlers.load_post.append(handler.load_post)
    bpy.app.handlers.depsgraph_update_pre.append(handler.depsgraph_update_pre_handler)
    bpy.types.VIEW3D_MT_image_add.append(ui.add_object_button)

@@ -140,6 +141,6 @@ def unregister():
    del bpy.types.Object.BIMAssignedProductProperties
    del bpy.types.Object.BIMTextProperties
    del bpy.types.TextCurve.BIMTextProperties
-    bpy.app.handlers.load_post.remove(handler.toggleDecorationsOnLoad)
+    bpy.app.handlers.load_post.remove(handler.load_post)
    bpy.app.handlers.depsgraph_update_pre.remove(handler.depsgraph_update_pre_handler)
    bpy.types.VIEW3D_MT_image_add.remove(ui.add_object_button)
@@ -23,6 +23,7 @@ import ifcopenshell.util.element
 import ifcopenshell.util.representation
 import blenderbim.tool as tool
 from pathlib import Path
+from typing import Any, Union


 def refresh():
@@ -234,9 +235,9 @@ class DecoratorData:
    cut_cache = {}
    layerset_cache = {}

-    # used by Ifc Annotations with ObjectType = "BATTING"
    @classmethod
    def get_batting_thickness(cls, obj):
+        """used by IfcAnnotations with ObjectType = "BATTING" """
        result = cls.data.get(obj.name, None)
        if result is not None:
            return result
@@ -248,9 +249,9 @@ class DecoratorData:
            cls.data[obj.name] = thickness
            return thickness

-    # used by Ifc Annotations with ObjectType = "SECTION"
    @classmethod
    def get_section_markers_display_data(cls, obj):
+        """used by IfcAnnotations with ObjectType = "SECTION" """
        result = cls.data.get(obj.name, None)
        if result is not None:
            return result
@@ -290,10 +291,10 @@ class DecoratorData:
        cls.data[obj.name] = display_data
        return display_data

-    # used by Ifc Annotations with ObjectType = "TEXT" / "TEXT_LEADER"
    @classmethod
-    def get_ifc_text_data(cls, obj):
-        """returns font size in mm for current ifc text object"""
+    def get_ifc_text_data(cls, obj: bpy.types.Object) -> dict[str, Any]:
+        """used by Ifc Annotations with ObjectType = "TEXT" / "TEXT_LEADER"\n
+        returns font size in mm for current ifc text object"""
        result = cls.data.get(obj.name, None)
        if result is not None:
            return result
@@ -317,7 +318,7 @@ class DecoratorData:
        font_size = FONT_SIZES[font_size_type]

        # get symbol
-        symbol = pset_data.get("Symbol", None)
+        symbol = tool.Drawing.get_annotation_symbol(element)

        # other attributes
        props_literals = props.literals
@@ -340,6 +341,11 @@ class DecoratorData:
        cls.data[obj.name] = text_data
        return text_data

+    @classmethod
+    def get_symbol(cls, obj: bpy.types.Object) -> Union[str, None]:
+        """used by IfcAnnotations with ObjectType MULTI_SYMBOL"""
+        return tool.Drawing.get_annotation_symbol(tool.Ifc.get_entity(obj))
+
    @classmethod
    def get_dimension_data(cls, obj):
        """used by Ifc Annotations with ObjectType:
@@ -412,10 +418,12 @@ class AnnotationData:
        relating_types = []
        for relating_type in tool.Ifc.get().by_type("IfcTypeProduct"):
            if tool.Drawing.is_annotation_object_type(relating_type, object_type):
-                relating_types.append({
-                    "id": relating_type.id(),
-                    "name": relating_type.Name or "Unnamed",
-                    "description": relating_type.Description or "No Description",
-                })
+                relating_types.append(
+                    {
+                        "id": relating_type.id(),
+                        "name": relating_type.Name or "Unnamed",
+                        "description": relating_type.Description or "No Description",
+                    }
+                )

        return sorted(relating_types, key=lambda x: x["name"])
@@ -37,6 +37,7 @@ from blenderbim.bim.module.drawing.shaders import add_verts_sequence, add_offset
 from blenderbim.bim.module.drawing.helper import format_distance
 from timeit import default_timer as timer
 from functools import lru_cache
+from typing import Optional, Iterator, Type, Union

 UNSPECIAL_ELEMENT_COLOR = (0.2, 0.2, 0.2, 1)  # GREY

@@ -69,7 +70,7 @@ class profile_consequential:
        cls.lines = []


-def worldspace_to_winspace(verts, context):
+def worldspace_to_winspace(verts: list[Vector], context: bpy.types.Context) -> list[Vector]:
    """Convert world space verts to window space"""
    region = context.region
    region3d = context.region_data
@@ -80,7 +81,7 @@ def worldspace_to_winspace(verts, context):
    return winspace_verts


-def winspace_to_worldspace(verts, context):
+def winspace_to_worldspace(verts: list[Vector], context: bpy.types.Context) -> list[Vector]:
    """Convert winspace verts to world space"""
    region = context.region
    region3d = context.region_data
@@ -121,17 +122,18 @@ def get_callout_head(edge_dir, edge_side, callout_size, callout_gap):
    return head


-def get_circle_head(size, segments=20):
+def get_circle_head(size: float, segments: int = 20, rotation: float = 0.0) -> list[Vector]:
+    """`rotation` value in radians"""
    angle_d = 2 * pi / segments
    head = []
    for i in range(segments):
-        angle = angle_d * i
+        angle = angle_d * i + rotation
        head.append(Vector([cos(angle), sin(angle), 0]) * size)
    return head


-def get_circle_head_asterisk(size, segments=6):
-    circle_head = get_circle_head(size, segments)
+def get_circle_head_asterisk(size: float, segments: int = 6, rotation: float = 0.0) -> Iterator[tuple[Vector, Vector]]:
+    circle_head = get_circle_head(size, segments, rotation)
    middle = segments // 2
    return zip(circle_head[:middle], circle_head[middle:])

@@ -157,9 +159,7 @@ class BaseDecorator:
    objecttype = "NOTDEFINED"

    def __init__(self):
-        self.font_id = blf.load(
-            os.path.join(bpy.context.scene.BIMProperties.data_dir, "fonts", "OpenGost Type B TT.ttf")
-        )
+        self.font_id = 0 # 0 is the default font

        # POLYLINE_UNIFORM_COLOR is good for smoothed lines since `bgl.enable(GL_LINE_SMOOTH)` is deprecated
        self.line_shader = gpu.shader.from_builtin("POLYLINE_UNIFORM_COLOR")
@@ -264,7 +264,7 @@ class BaseDecorator:
        vertices = [obj.matrix_world @ v.co for v in bm.verts]
        return vertices, indices

-    def decorate(self, context, obj):
+    def decorate(self, context: bpy.types.Context, obj: bpy.types.Object):
        """perform actual drawing stuff"""
        raise NotImplementedError()

@@ -310,13 +310,28 @@ class BaseDecorator:

        self.draw_lines(context, obj, output_verts, output_edges)

-    def draw_batch(self, shader_type, content_pos, color, indices=None):
+    def draw_batch(
+        self,
+        shader_type: str,
+        content_pos: list[Vector],
+        color: tuple[float, float, float, float],
+        indices: Optional[list[tuple[int, int]]] = None,
+    ) -> None:
        shader = self.line_shader if shader_type == "LINES" else self.base_shader
        batch = batch_for_shader(shader, shader_type, {"pos": content_pos}, indices=indices)
        shader.uniform_float("color", color)
        batch.draw(shader)

-    def draw_lines(self, context, obj, vertices, indices, color=None, line_width=1.0):
+    def draw_lines(
+        self,
+        context: bpy.types.Context,
+        obj: Optional[bpy.types.Object],
+        vertices: list[Vector],
+        indices: list[tuple[int, int]],
+        color: Optional[tuple[float, float, float, float]] = None,
+        line_width: float = 1.0,
+    ) -> None:
+        # TODO: `obj` is actually never used, need to remove it
        """`verts` should be in winspace with `(0,0,0)` in the screen left bottom corner, not in the center"""
        region = context.region
        if not color:
@@ -329,7 +344,7 @@ class BaseDecorator:
        gpu.state.blend_set("ALPHA")
        self.draw_batch("LINES", vertices, color, indices)

-    def get_viewport_drawing_scale(self, context):
+    def get_viewport_drawing_scale(self, context: bpy.types.Context) -> float:
        # Horrific prototype code
        factor = self.camera_zoom_to_factor(context.space_data.region_3d.view_camera_zoom)
        camera_width_px = factor * context.region.width
@@ -387,7 +402,6 @@ class BaseDecorator:
                line_no += 1 if multiline_to_bottom else -1
            return

-        # 0 is the default font, but we're fancier than that
        font_id = self.font_id

        color = context.preferences.addons["blenderbim"].preferences.decorations_colour
@@ -401,12 +415,14 @@ class BaseDecorator:
        factor = self.camera_zoom_to_factor(context.space_data.region_3d.view_camera_zoom)
        camera_width_px = factor * context.region.width
        mm_to_px = camera_width_px / self.get_camera_width_mm()
-        # 0.004118616 is a magic constant number I visually discovered to get the right number.
+        # magic_font_scale's default of (0.004118616) is a magic constant number I visually discovered to get the right number.
        # In particular it works only for the OpenGOST font and produces a 2.5mm font size.
        # It probably should be dynamically calculated using system.dpi or something.
        # font_size = 16 <-- this is a good default
        # TODO: need to synchronize it better with svg
-        font_size_px = int(0.004118616 * mm_to_px) * font_size_mm / 2.5
+
+        magic_font_scale = bpy.context.scene.DocProperties.magic_font_scale
+        font_size_px = int(magic_font_scale * mm_to_px) * font_size_mm / 2.5
        pos = pos - line_no * font_size_px * rotation_matrix[1]

        blf.size(font_id, font_size_px)
@@ -485,14 +501,16 @@ class BaseDecorator:
        decimal_places = drawing_pset_data.get("DecimalPlaces", None)
        return format_distance(value, precision=precision, decimal_places=decimal_places)

-    def draw_asterisk(self, context, obj):
+    def draw_asterisk(self, context: bpy.types.Context, pos: Vector, rotation: float = 0.0, scale: float = 1.0) -> None:
+        """`pos` is a world space position\n
+        `rotation` value in radians"""
        # gather geometry data and convert to winspace
-        verts = [obj.location]
+        verts = [pos]
        viewportDrawingScale = self.get_viewport_drawing_scale(context)
        winspace_verts = worldspace_to_winspace(verts, context)

        # setup geometry parameters
-        circle_size = viewportDrawingScale * 4
+        circle_size = viewportDrawingScale * 4 * scale

        output_verts = []
        output_edges = []
@@ -502,20 +520,13 @@ class BaseDecorator:
        }

        v0 = winspace_verts[0]
-        asterisk_head = get_circle_head_asterisk(circle_size)
+        asterisk_head = get_circle_head_asterisk(circle_size, rotation=rotation)
        start_i = 0
        for segment in asterisk_head:
            start_i = add_verts_sequence(add_offsets(v0, segment), start_i, **out_kwargs)
-        self.draw_lines(context, obj, output_verts, output_edges)
+        self.draw_lines(context, None, output_verts, output_edges)

-    def draw_text(self, context, obj, text_world_position=None, reverse_lines_order=False):
-        """if `text_world_position` is not provided, the object's location will be used"""
-
-        if not text_world_position:
-            text_world_position = obj.location
-
-        region = context.region
-        region3d = context.region_data
+    def get_annotation_direction(self, context: bpy.types.Context, obj: bpy.types.Object) -> Vector:
        camera = context.scene.camera

        def get_basis_vector(matrix, i=0):
@@ -523,10 +534,57 @@ class BaseDecorator:
            return matrix.inverted()[i].to_3d().normalized()

        text_dir_world_x_axis = get_basis_vector(obj.matrix_world)
-
        camera_matrix = tool.Drawing.get_camera_matrix(camera)
-
        text_dir = (camera_matrix.inverted().to_quaternion() @ text_dir_world_x_axis).to_2d().normalized()
+        return text_dir
+
+    def draw_symbol(self, context: bpy.types.Context, obj: bpy.types.Object, annotation_dir: Vector) -> None:
+        if obj.type not in ("MESH", "EMPTY"):
+            return
+
+        if obj.type == "MESH":
+            mesh: bpy.types.Mesh = obj.data
+
+            if len(mesh.vertices) == 0:
+                return
+
+            if mesh.edges:
+                MiscDecorator.decorate(self, context, obj)
+                return
+
+            symbol = DecoratorData.get_symbol(obj)
+            if not symbol:
+                return
+
+            for vert in mesh.vertices:
+                self.draw_asterisk(context, obj.matrix_world @ vert.co)
+
+            return
+
+        # EMPTY objects
+        symbol = DecoratorData.get_symbol(obj)
+        if not symbol:
+            return
+
+        rotation = -Vector((1, 0)).angle_signed(annotation_dir)
+        # NOTE: for now we assume that scale is uniform
+        self.draw_asterisk(context, obj.location, rotation, obj.scale.x)
+
+    def draw_text(
+        self,
+        context: bpy.types.Context,
+        obj: bpy.types.Object,
+        text_world_position: Optional[Vector] = None,
+        reverse_lines_order=False,
+    ) -> None:
+        """if `text_world_position` is not provided, the object's location will be used"""
+
+        if not text_world_position:
+            text_world_position = obj.location
+
+        region = context.region
+        region3d = context.region_data
+        text_dir = self.get_annotation_direction(context, obj)

        pos = location_3d_to_region_2d(region, region3d, text_world_position)
        props = obj.BIMTextProperties
@@ -539,8 +597,7 @@ class BaseDecorator:

        # draw asterisk symbol to indicate that there is some symbol that's not shown in viewport
        if symbol:
-            self.draw_asterisk(context, obj)
-            # NOTE: for now we assume that scale is uniform
+            self.draw_symbol(context, obj, text_dir)
            text_scale = obj.scale.x

        line_i = 0
@@ -548,7 +605,7 @@ class BaseDecorator:
        for literal_data in literals_data:
            box_alignment = literal_data["BoxAlignment"]

-            for line in literal_data["CurrentValue"].split("\\n"):
+            for line in literal_data["CurrentValue"].split("\n"):
                self.draw_label(
                    context,
                    line,
@@ -812,8 +869,9 @@ class AngleDecorator(BaseDecorator):
            base_edge = edge0 if tool.Cad.is_counter_clockwise_order(p0, p1, p2) else edge1
            text_offset = (Matrix.Rotation(-angle_rad / 2, 2) @ base_edge).normalized() * (radius + ANGLE_LABEL_OFFSET)
            label_position = p1 + text_offset
-
-            text = f"{int(angle)}deg"
+            drawing_pset_data = DrawingsData.data["active_drawing_pset_data"]
+            decimal_places = drawing_pset_data.get("AngleDecimalPlaces", None)
+            text = f"{round(angle, decimal_places)}°"
            label_dir = Vector((1, 0))
            self.draw_label(context, text, label_position, label_dir, box_alignment="center")

@@ -1003,7 +1061,7 @@ class StairDecorator(BaseDecorator):
 class MiscDecorator(BaseDecorator):
    objecttype = "MISC"

-    def decorate(self, context, obj):
+    def decorate(self, context: bpy.types.Context, obj: bpy.types.Object):
        if obj.data.is_editmode:
            verts, idxs = self.get_editmesh_geom(obj)
        else:
@@ -1505,6 +1563,14 @@ class TextDecorator(BaseDecorator):
        self.draw_text(context, obj)


+class SymbolDecorator(BaseDecorator):
+    objecttype = "SYMBOL"
+
+    def decorate(self, context: bpy.types.Context, obj: bpy.types.Object) -> None:
+        annotation_dir = self.get_annotation_direction(context, obj)
+        self.draw_symbol(context, obj, annotation_dir)
+
+
 class CutDecorator:
    installed = None
    cache = {}
@@ -1901,7 +1967,7 @@ class CutDecorator:


 class DecorationsHandler:
-    decorators_classes = [
+    decorators_classes: list[Type[BaseDecorator]] = [
        DimensionDecorator,
        AngleDecorator,
        GridDecorator,
@@ -1918,6 +1984,7 @@ class DecorationsHandler:
        SectionDecorator,
        ElevationDecorator,
        TextDecorator,
+        SymbolDecorator,
        BattingDecorator,
        FallDecorator,
    ]
@@ -1945,6 +2012,14 @@ class DecorationsHandler:
        self.decorators = {cls.objecttype: cls() for cls in self.decorators_classes}
        for object_type in ("SLOPE_ANGLE", "SLOPE_FRACTION", "SLOPE_PERCENT"):
            self.decorators[object_type] = self.decorators["FALL"]
+        self.decorators["MULTI_SYMBOL"] = self.decorators["SYMBOL"]
+        if drawing_font := bpy.context.scene.DocProperties.drawing_font:
+            drawing_font_path = os.path.join(bpy.context.scene.BIMProperties.data_dir, "fonts", drawing_font)
+            if os.path.exists(drawing_font_path):
+                font_id = blf.load(drawing_font_path)
+                for decorator in self.decorators.values():
+                    decorator.font_id = font_id
+

    def get_objects_and_decorators(self, collection):
        # TODO: do it in data instead of the handler for performance?
@@ -1962,7 +2037,7 @@ class DecorationsHandler:
            if not element.is_a("IfcAnnotation"):
                continue

-            object_type = element.ObjectType
+            object_type: Union[str, None] = element.ObjectType
            if object_type == "DRAWING":
                continue

@@ -23,7 +23,7 @@ from bpy.app.handlers import persistent


@persistent
-def toggleDecorationsOnLoad(*args):
+def load_post(*args):
    if bpy.context.scene.DocProperties.should_draw_decorations:
        decoration.DecorationsHandler.install(bpy.context)
    else:
@@ -188,7 +188,6 @@ def format_distance(
                feet += 1
                inches = 0

-
        if not isArea:
            add_inches = bool(inches) or not suppress_zero_inches
            tx_dist = ""
@@ -299,7 +298,9 @@ def parse_diagram_scale(camera):
    return float(numerator) / float(denominator)


-def ortho_view_frame(camera, margin=0.015):
+def ortho_view_frame(
+    camera: bpy.types.Camera, margin: float = 0.015
+) -> tuple[float, float, float, float, float, float]:
    """Calculates 2d bounding box of camera view area.

    Similar to `bpy.types.Camera.view_frame`
@@ -29,6 +29,8 @@ import subprocess
 import numpy as np
 import multiprocessing
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.ifcopenshell_wrapper
 import ifcopenshell.geom
 import ifcopenshell.util.selector
 import ifcopenshell.util.representation
@@ -44,6 +46,7 @@ import blenderbim.bim.module.drawing.helper as helper
 import blenderbim.bim.export_ifc
 from blenderbim.bim.module.drawing.decoration import CutDecorator
 from blenderbim.bim.module.drawing.data import DecoratorData, DrawingsData
+from typing import NamedTuple, List, Union, Optional
 from lxml import etree
 from mathutils import Vector, Color, Matrix
 from timeit import default_timer as timer
@@ -77,6 +80,11 @@ class Operator:
        return {"FINISHED"}


+class LineworkContexts(NamedTuple):
+    body: List[List[int]]
+    annotation: List[List[int]]
+
+
 class AddAnnotationType(bpy.types.Operator, Operator):
    bl_idname = "bim.add_annotation_type"
    bl_label = "Add Annotation Type"
@@ -193,6 +201,11 @@ class CreateDrawing(bpy.types.Operator):
        + "SHIFT+CLICK to print all selected drawings"
    )
    print_all: bpy.props.BoolProperty(name="Print All", default=False, options={"SKIP_SAVE"})
+    sync: bpy.props.BoolProperty(
+        name="Sync Before Creating Drawing",
+        description="Could save some time if you're sure IFC and current Blender session are already in sync",
+        default=True,
+    )

    @classmethod
    def poll(cls, context):
@@ -208,13 +221,15 @@ class CreateDrawing(bpy.types.Operator):
    def execute(self, context):
        self.props = context.scene.DocProperties

+        active_drawing_id = context.scene.camera.BIMObjectProperties.ifc_definition_id
        if self.print_all:
-            original_drawing_id = self.props.active_drawing_id
+            original_drawing_id = active_drawing_id
            drawings_to_print = [d.ifc_definition_id for d in self.props.drawings if d.is_selected and d.is_drawing]
        else:
-            drawings_to_print = [self.props.active_drawing_id]
+            drawings_to_print = [active_drawing_id]

-        for drawing_id in drawings_to_print:
+        for drawing_i, drawing_id in enumerate(drawings_to_print):
+            self.drawing_index = drawing_i
            if self.print_all:
                bpy.ops.bim.activate_drawing(drawing=drawing_id, camera_view_point=False)

@@ -329,6 +344,13 @@ class CreateDrawing(bpy.types.Operator):
        if not ifcopenshell.util.element.get_pset(self.drawing, "EPset_Drawing", "HasUnderlay"):
            return
        svg_path = self.get_svg_path(cache_type="underlay")
+        if os.path.isfile(svg_path) and self.props.should_use_underlay_cache:
+            return svg_path
+
+        visible_object_names = {obj.name for obj in bpy.context.visible_objects}
+        for obj in bpy.context.view_layer.objects:
+            obj.hide_render = obj.name not in visible_object_names
+
        context.scene.render.filepath = svg_path[0:-4] + ".png"
        drawing_style = context.scene.DocProperties.drawing_styles[self.cprops.active_drawing_style_index]

@@ -367,20 +389,129 @@ class CreateDrawing(bpy.types.Operator):
        self.svg_writer.create_blank_svg(svg_path).draw_underlay(context.scene.render.filepath).save()
        return svg_path

-    def generate_linework(self, context):
+    def get_linework_contexts(self, ifc, target_view) -> LineworkContexts:
+        plan_body_target_contexts = []
+        plan_body_model_contexts = []
+        model_body_target_contexts = []
+        model_body_model_contexts = []
+
+        plan_annotation_target_contexts = []
+        plan_annotation_model_contexts = []
+        model_annotation_target_contexts = []
+        model_annotation_model_contexts = []
+
+        for rep_context in ifc.by_type("IfcGeometricRepresentationContext"):
+            if rep_context.is_a("IfcGeometricRepresentationSubContext"):
+                if rep_context.ContextType == "Plan":
+                    if rep_context.ContextIdentifier in ["Body", "Facetation"]:
+                        if rep_context.TargetView == target_view:
+                            plan_body_target_contexts.append(rep_context.id())
+                        elif rep_context.TargetView == "MODEL_VIEW":
+                            plan_body_model_contexts.append(rep_context.id())
+                    elif rep_context.ContextIdentifier == "Annotation":
+                        if rep_context.TargetView == target_view:
+                            plan_annotation_target_contexts.append(rep_context.id())
+                        elif rep_context.TargetView == "MODEL_VIEW":
+                            plan_annotation_model_contexts.append(rep_context.id())
+                elif rep_context.ContextType == "Model":
+                    if rep_context.ContextIdentifier in ["Body", "Facetation"]:
+                        if rep_context.TargetView == target_view:
+                            model_body_target_contexts.append(rep_context.id())
+                        elif rep_context.TargetView == "MODEL_VIEW":
+                            model_body_model_contexts.append(rep_context.id())
+                    elif rep_context.ContextIdentifier == "Annotation":
+                        if rep_context.TargetView == target_view:
+                            model_annotation_target_contexts.append(rep_context.id())
+                        elif rep_context.TargetView == "MODEL_VIEW":
+                            model_annotation_model_contexts.append(rep_context.id())
+            elif rep_context.ContextType == "Model":
+                # You should never purely assign to a "Model" context, but
+                # if you do, this is what we assume your intention is.
+                model_body_model_contexts.append(rep_context.id())
+                continue
+
+        body_contexts = (
+            [
+                plan_body_target_contexts,
+                plan_body_model_contexts,
+                model_body_target_contexts,
+                model_body_model_contexts,
+            ]
+            if target_view in ["PLAN_VIEW", "REFLECTED_PLAN_VIEW"]
+            else [
+                model_body_target_contexts,
+                model_body_model_contexts,
+            ]
+        )
+
+        annotation_contexts = (
+            [
+                plan_annotation_target_contexts,
+                plan_annotation_model_contexts,
+                model_annotation_target_contexts,
+                model_annotation_model_contexts,
+            ]
+            if target_view in ["PLAN_VIEW", "REFLECTED_PLAN_VIEW"]
+            else [
+                model_annotation_target_contexts,
+                model_annotation_model_contexts,
+            ]
+        )
+
+        return LineworkContexts(body_contexts, annotation_contexts)
+
+    def serialize_contexts_elements(
+        self,
+        ifc: ifcopenshell.file,
+        tree: ifcopenshell.geom.tree,
+        contexts: LineworkContexts,
+        context_type: str,
+        drawing_elements: set[ifcopenshell.entity_instance],
+        target_view: str,
+    ) -> None:
+        drawing_elements = drawing_elements.copy()
+        contexts = getattr(contexts, context_type)
+        for context in contexts:
+            with profile(f"Processing {context_type} context"):
+                if not context or not drawing_elements:
+                    continue
+                geom_settings = ifcopenshell.geom.settings(
+                    DISABLE_TRIANGULATION=True, STRICT_TOLERANCE=True, INCLUDE_CURVES=True
+                )
+                if ifc.by_id(context[0]).ContextType == "Plan" and "PLAN_VIEW" in target_view:
+                    offset = ifcopenshell.ifcopenshell_wrapper.float_array_3()
+                    # A 2mm Z offset to combat Z-fighting in plan or RCPs
+                    offset[2] = 0.002 if target_view == "PLAN_VIEW" else -0.002
+                    geom_settings.offset = offset
+                geom_settings.set_context_ids(context)
+                it = ifcopenshell.geom.iterator(
+                    geom_settings, ifc, multiprocessing.cpu_count(), include=drawing_elements
+                )
+                processed = set()
+                for elem in it:
+                    processed.add(ifc.by_id(elem.id))
+                    self.serialiser.write(elem)
+                    tree.add_element(elem)
+                drawing_elements -= processed
+
+    def generate_linework(self, context: bpy.types.Context) -> Union[str, None]:
        if not ifcopenshell.util.element.get_pset(self.drawing, "EPset_Drawing", "HasLinework"):
            return
        svg_path = self.get_svg_path(cache_type="linework")
        if os.path.isfile(svg_path) and self.props.should_use_linework_cache:
            return svg_path

-        with profile("sync"):
-            # All very hackish whilst prototyping
-            exporter = blenderbim.bim.export_ifc.IfcExporter(None)
-            exporter.file = tool.Ifc.get()
-            invalidated_elements = exporter.sync_all_objects()
-            invalidated_elements += exporter.sync_edited_objects()
-            invalidated_guids = [e.GlobalId for e in invalidated_elements if hasattr(e, "GlobalId")]
+        # in case of printing multiple drawings we need to sync just once
+        if self.sync and self.drawing_index == 0:
+            with profile("sync"):
+                # All very hackish whilst prototyping
+                exporter = blenderbim.bim.export_ifc.IfcExporter(None)
+                exporter.file = tool.Ifc.get()
+                invalidated_elements = exporter.sync_all_objects(skip_unlinking=True)
+                invalidated_elements += exporter.sync_edited_objects()
+                invalidated_guids = [e.GlobalId for e in invalidated_elements if hasattr(e, "GlobalId")]
+                cache = IfcStore.get_cache()
+                [cache.remove(guid) for guid in invalidated_guids]

        # If we have already calculated it in the SVG in the past, don't recalculate
        edited_guids = set()
@@ -399,148 +530,40 @@ class CreateDrawing(bpy.types.Operator):

        files = {context.scene.BIMProperties.ifc_file: tool.Ifc.get()}

+        for link in context.scene.BIMProjectProperties.links:
+            if link.name not in IfcStore.session_files:
+                IfcStore.session_files[link.name] = ifcopenshell.open(link.name)
+            files[link.name] = IfcStore.session_files[link.name]
+
+        target_view = ifcopenshell.util.element.get_psets(self.camera_element)["EPset_Drawing"]["TargetView"]
+        self.setup_serialiser(target_view)
+
+        tree = ifcopenshell.geom.tree()
+        tree.enable_face_styles(True)
+
        for ifc_path, ifc in files.items():
            # Don't use draw.main() just whilst we're prototyping and experimenting
+            # TODO: hash paths are never used
            ifc_hash = hashlib.md5(ifc_path.encode("utf-8")).hexdigest()
            ifc_cache_path = os.path.join(context.scene.BIMProperties.data_dir, "cache", f"{ifc_hash}.h5")

+            self.serialiser.setFile(ifc)
+            drawing_elements = tool.Drawing.get_drawing_elements(self.camera_element, ifc_file=ifc)
+
            # Get all representation contexts to see what we're dealing with.
            # Drawings only draw bodies and annotations (and facetation, due to a Revit bug).
            # A drawing prioritises a target view context first, followed by a model view context as a fallback.
            # Specifically for PLAN_VIEW and REFLECTED_PLAN_VIEW, any Plan context is also prioritised.
+            contexts = self.get_linework_contexts(ifc, target_view)
+            self.serialize_contexts_elements(ifc, tree, contexts, "body", drawing_elements, target_view)
+            self.serialize_contexts_elements(ifc, tree, contexts, "annotation", drawing_elements, target_view)

-            plan_body_target_contexts = []
-            plan_body_model_contexts = []
-            model_body_target_contexts = []
-            model_body_model_contexts = []
-
-            plan_annotation_target_contexts = []
-            plan_annotation_model_contexts = []
-            model_annotation_target_contexts = []
-            model_annotation_model_contexts = []
-
-            target_view = ifcopenshell.util.element.get_psets(self.camera_element)["EPset_Drawing"]["TargetView"]
-
-            for rep_context in ifc.by_type("IfcGeometricRepresentationContext"):
-                if rep_context.is_a("IfcGeometricRepresentationSubContext"):
-                    if rep_context.ContextType == "Plan":
-                        if rep_context.ContextIdentifier in ["Body", "Facetation"]:
-                            if rep_context.TargetView == target_view:
-                                plan_body_target_contexts.append(rep_context.id())
-                            elif rep_context.TargetView == "MODEL_VIEW":
-                                plan_body_model_contexts.append(rep_context.id())
-                        elif rep_context.ContextIdentifier == "Annotation":
-                            if rep_context.TargetView == target_view:
-                                plan_annotation_target_contexts.append(rep_context.id())
-                            elif rep_context.TargetView == "MODEL_VIEW":
-                                plan_annotation_model_contexts.append(rep_context.id())
-                    elif rep_context.ContextType == "Model":
-                        if rep_context.ContextIdentifier in ["Body", "Facetation"]:
-                            if rep_context.TargetView == target_view:
-                                model_body_target_contexts.append(rep_context.id())
-                            elif rep_context.TargetView == "MODEL_VIEW":
-                                model_body_model_contexts.append(rep_context.id())
-                        elif rep_context.ContextIdentifier == "Annotation":
-                            if rep_context.TargetView == target_view:
-                                model_annotation_target_contexts.append(rep_context.id())
-                            elif rep_context.TargetView == "MODEL_VIEW":
-                                model_annotation_model_contexts.append(rep_context.id())
-                elif rep_context.ContextType == "Model":
-                    # You should never purely assign to a "Model" context, but
-                    # if you do, this is what we assume your intention is.
-                    model_body_model_contexts.append(rep_context.id())
-                    continue
-
-            body_contexts = (
-                [
-                    plan_body_target_contexts,
-                    plan_body_model_contexts,
-                    model_body_target_contexts,
-                    model_body_model_contexts,
-                ]
-                if target_view in ["PLAN_VIEW", "REFLECTED_PLAN_VIEW"]
-                else [
-                    model_body_target_contexts,
-                    model_body_model_contexts,
-                ]
-            )
-
-            annotation_contexts = (
-                [
-                    plan_annotation_target_contexts,
-                    plan_annotation_model_contexts,
-                    model_annotation_target_contexts,
-                    model_annotation_model_contexts,
-                ]
-                if target_view in ["PLAN_VIEW", "REFLECTED_PLAN_VIEW"]
-                else [
-                    model_annotation_target_contexts,
-                    model_annotation_model_contexts,
-                ]
-            )
-
-            drawing_elements = tool.Drawing.get_drawing_elements(self.camera_element)
-
-            self.setup_serialiser(ifc, target_view)
-            cache = IfcStore.get_cache()
-            [cache.remove(guid) for guid in invalidated_guids]
-            tree = ifcopenshell.geom.tree()
-            tree.enable_face_styles(True)
-
-            elements = drawing_elements.copy()
-            for body_context in body_contexts:
-                with profile("Processing body context"):
-                    if body_context and elements:
-                        geom_settings = ifcopenshell.geom.settings(
-                            DISABLE_TRIANGULATION=True, STRICT_TOLERANCE=True, INCLUDE_CURVES=True
-                        )
-                        if ifc.by_id(body_context[0]).ContextType == "Plan" and "PLAN_VIEW" in target_view:
-                            offset = ifcopenshell.ifcopenshell_wrapper.float_array_3()
-                            # A 2mm Z offset to combat Z-fighting in plan or RCPs
-                            offset[2] = 0.002 if target_view == "PLAN_VIEW" else -0.002
-                            geom_settings.offset = offset
-                        geom_settings.set_context_ids(body_context)
-                        it = ifcopenshell.geom.iterator(
-                            geom_settings, ifc, multiprocessing.cpu_count(), include=elements
-                        )
-                        it.set_cache(cache)
-                        processed = set()
-                        for elem in self.yield_from_iterator(it):
-                            processed.add(ifc.by_id(elem.id))
-                            self.serialiser.write(elem)
-                            tree.add_element(elem)
-                        elements -= processed
-
-            elements = drawing_elements.copy()
-            for annotation_context in annotation_contexts:
-                with profile("Processing annotation context"):
-                    if annotation_context and elements:
-                        geom_settings = ifcopenshell.geom.settings(
-                            DISABLE_TRIANGULATION=True, STRICT_TOLERANCE=True, INCLUDE_CURVES=True
-                        )
-                        if ifc.by_id(annotation_context[0]).ContextType == "Plan" and "PLAN_VIEW" in target_view:
-                            offset = ifcopenshell.ifcopenshell_wrapper.float_array_3()
-                            # A 2mm Z offset to combat Z-fighting in plan or RCPs
-                            offset[2] = 0.002 if target_view == "PLAN_VIEW" else -0.002
-                            geom_settings.offset = offset
-                        geom_settings.set_context_ids(annotation_context)
-                        it = ifcopenshell.geom.iterator(
-                            geom_settings, ifc, multiprocessing.cpu_count(), include=elements
-                        )
-                        it.set_cache(cache)
-                        processed = set()
-                        for elem in self.yield_from_iterator(it):
-                            processed.add(ifc.by_id(elem.id))
-                            self.serialiser.write(elem)
-                            tree.add_element(elem)
-                        elements -= processed
-
-            if self.camera_element not in drawing_elements:
+            if tool.Ifc.get() == ifc and self.camera_element not in drawing_elements:
                with profile("Camera element"):
                    # The camera must always be included, regardless of any include/exclude filters.
                    geom_settings = ifcopenshell.geom.settings(DISABLE_TRIANGULATION=True, STRICT_TOLERANCE=True)
                    it = ifcopenshell.geom.iterator(geom_settings, ifc, include=[self.camera_element])
-                    for elem in self.yield_from_iterator(it):
+                    for elem in it:
                        self.serialiser.write(elem)

        with profile("Finalizing"):
@@ -588,8 +611,7 @@ class CreateDrawing(bpy.types.Operator):
                if global_id not in elements_with_faces:
                    continue
                for path in projection.findall("./{http://www.w3.org/2000/svg}path"):
-                    # Rounding is necessary to ensure coincident points are coincident
-                    start, end = [[round(float(o), 1) for o in co[1:].split(",")] for co in path.attrib["d"].split()]
+                    start, end = [[float(o) for o in co[1:].split(",")] for co in path.attrib["d"].split()]
                    if start == end:
                        continue
                    # Extension by 0.5mm is necessary to ensure lines overlap with other diagonal lines
@@ -851,13 +873,12 @@ class CreateDrawing(bpy.types.Operator):

        return svg_path

-    def setup_serialiser(self, ifc, target_view):
+    def setup_serialiser(self, target_view):
        self.svg_settings = ifcopenshell.geom.settings(
            DISABLE_TRIANGULATION=True, STRICT_TOLERANCE=True, INCLUDE_CURVES=True
        )
        self.svg_buffer = ifcopenshell.geom.serializers.buffer()
        self.serialiser = ifcopenshell.geom.serializers.svg(self.svg_buffer, self.svg_settings)
-        self.serialiser.setFile(ifc)
        self.serialiser.setWithoutStoreys(True)
        self.serialiser.setPolygonal(True)
        self.serialiser.setUseHlrPoly(True)
@@ -884,13 +905,6 @@ class CreateDrawing(bpy.types.Operator):
        # the style of the face when running tree.select_ray()
        # tree.enable_face_styles(True)

-    def yield_from_iterator(self, it):
-        if it.initialize():
-            while True:
-                yield it.get()
-                if not it.next():
-                    break
-
    def get_svg_classes(self, element):
        classes = [element.is_a()]
        material = ifcopenshell.util.element.get_material(element, should_skip_usage=True)
@@ -928,6 +942,18 @@ class CreateDrawing(bpy.types.Operator):
        self.is_manifold_cache[obj.data.name] = True
        return True

+    def get_element_by_guid(self, guid):
+        try:
+            return tool.Ifc.get().by_guid(guid)
+        except:
+            for link in bpy.context.scene.BIMProjectProperties.links:
+                if link.name not in IfcStore.session_files:
+                    IfcStore.session_files[link.name] = ifcopenshell.open(link.name)
+                try:
+                    return IfcStore.session_files[link.name].by_guid(guid)
+                except:
+                    continue
+
    def merge_linework_and_add_metadata(self, root):
        join_criteria = ifcopenshell.util.element.get_pset(self.camera_element, "EPset_Drawing", "JoinCriteria")
        if join_criteria:
@@ -942,7 +968,7 @@ class CreateDrawing(bpy.types.Operator):

        ifc = tool.Ifc.get()
        for el in root.findall(".//{http://www.w3.org/2000/svg}g[@{http://www.ifcopenshell.org/ns}guid]"):
-            element = ifc.by_guid(el.get("{http://www.ifcopenshell.org/ns}guid"))
+            element = self.get_element_by_guid(el.get("{http://www.ifcopenshell.org/ns}guid"))

            if "projection" in el.get("class", "").split():
                classes = self.get_svg_classes(element)
@@ -955,6 +981,10 @@ class CreateDrawing(bpy.types.Operator):
                el.set("class", " ".join(classes))

            obj = tool.Ifc.get_object(element)
+
+            if not obj: # This is a linked model object. For now, do nothing.
+                continue
+
            if not self.is_manifold(obj):
                continue

@@ -970,7 +1000,7 @@ class CreateDrawing(bpy.types.Operator):
            for path in el.findall("{http://www.w3.org/2000/svg}path"):
                for subpath in path.attrib["d"].split("M")[1:]:
                    subpath = "M" + subpath.strip()
-                    coords = [[round(float(o), 1) for o in co[1:].split(",")] for co in subpath.split()]
+                    coords = [[float(o) for o in co[1:].split(",")] for co in subpath.split()]
                    if coords[0] != coords[-1]:
                        has_open_paths = True
                    line_strings.append(shapely.LineString(coords))
@@ -1034,7 +1064,7 @@ class CreateDrawing(bpy.types.Operator):
                for path in el.findall("{http://www.w3.org/2000/svg}path"):
                    for subpath in path.attrib["d"].split("M")[1:]:
                        subpath_co = "M" + subpath.strip(" Z")
-                        coords = [[round(float(o), 1) for o in co[1:].split(",")] for co in subpath_co.split()]
+                        coords = [[float(o) for o in co[1:].split(",")] for co in subpath_co.split()]
                        if subpath.strip().lower().endswith("z"):
                            coords.append(coords[0])
                        if len(coords) > 2 and coords[0] == coords[-1]:
@@ -1132,14 +1162,14 @@ class CreateDrawing(bpy.types.Operator):
                    continue
                return space

-    def get_material_name(self, element):
+    def get_material_name(self, element: ifcopenshell.entity_instance) -> str:
        if hasattr(element, "Name") and element.Name:
            return element.Name
        elif hasattr(element, "LayerSetName") and element.LayerSetName:
            return element.LayerSetName
        return "mat-" + str(element.id())

-    def get_svg_path(self, cache_type=None):
+    def get_svg_path(self, cache_type: Optional[str] = None) -> str:
        drawing_path = tool.Drawing.get_document_uri(self.camera_document)
        drawings_dir = os.path.dirname(drawing_path)

@@ -1236,12 +1266,14 @@ class AddDrawingToSheet(bpy.types.Operator, Operator):
            return

        reference = tool.Ifc.run("document.add_reference", information=sheet)
-        id_attr = "ItemReference" if tool.Ifc.get_schema() == "IFC2X3" else "Identification"
-        attributes = {
-            id_attr: str(len([r for r in references if r.Description in ("DRAWING", "SCHEDULE")]) + 1),
-            "Location": drawing_reference.Location,
-            "Description": "DRAWING",
-        }
+        attributes = tool.Drawing.generate_reference_attributes(
+            reference,
+            Identification=str(
+                len([r for r in references if tool.Drawing.get_reference_description(r) in ("DRAWING", "SCHEDULE")]) + 1
+            ),
+            Location=drawing_reference.Location,
+            Description="DRAWING",
+        )
        tool.Ifc.run("document.edit_reference", reference=reference, attributes=attributes)
        sheet_builder = sheeter.SheetBuilder()
        sheet_builder.data_dir = context.scene.BIMProperties.data_dir
@@ -1309,9 +1341,10 @@ class CreateSheets(bpy.types.Operator, Operator):

        has_sheet_reference = False
        for reference in tool.Drawing.get_document_references(sheet):
-            if reference.Description == "SHEET":
+            reference_description = tool.Drawing.get_reference_description(reference)
+            if reference_description == "SHEET":
                has_sheet_reference = True
-            elif reference.Description == "RASTER":
+            elif reference_description == "RASTER":
                if reference.Location in raster_references:
                    raster_references.remove(reference.Location)
                else:
@@ -1322,7 +1355,9 @@ class CreateSheets(bpy.types.Operator, Operator):
            tool.Ifc.run(
                "document.edit_reference",
                reference=reference,
-                attributes={"Location": tool.Ifc.get_relative_uri(svg), "Description": "SHEET"},
+                attributes=tool.Drawing.generate_reference_attributes(
+                    reference, Location=tool.Ifc.get_relative_uri(svg), Description="SHEET"
+                ),
            )

        for raster_reference in raster_references:
@@ -1330,7 +1365,9 @@ class CreateSheets(bpy.types.Operator, Operator):
            tool.Ifc.run(
                "document.edit_reference",
                reference=reference,
-                attributes={"Location": tool.Ifc.get_relative_uri(raster_reference), "Description": "RASTER"},
+                attributes=tool.Drawing.generate_reference_attributes(
+                    reference, Location=tool.Ifc.get_relative_uri(raster_reference), Description="RASTER"
+                ),
            )

        svg2pdf_command = context.preferences.addons["blenderbim"].preferences.svg2pdf_command
@@ -1362,7 +1399,7 @@ class SelectAllDrawings(bpy.types.Operator):
    bl_label = "Select All Drawings"
    view: bpy.props.StringProperty()
    bl_description = "Select all drawings in the drawing list.\n\n" + "SHIFT+CLICK to deselect all drawings"
-    select_all: bpy.props.BoolProperty(name="Open All", default=False, options={"SKIP_SAVE"})
+    select_all: bpy.props.BoolProperty(name="Open All", default=True, options={"SKIP_SAVE"})

    def invoke(self, context, event):
        # deselect all drawings on shift+click
@@ -1439,13 +1476,19 @@ class ActivateModel(bpy.types.Operator):

        CutDecorator.uninstall()

+        # save current visibility statuses for Views and Types collections
+        visibility_status: dict[bpy.types.Object, bool] = {}
+        for col in bpy.data.collections["Views"].children:
+            for obj in col.objects:
+                visibility_status[obj] = obj.hide_get()
+        for obj in bpy.data.collections["Types"].objects:
+            visibility_status[obj] = obj.hide_get()
+
        if not bpy.app.background:
            with context.temp_override(**tool.Blender.get_viewport_context()):
                bpy.ops.object.hide_view_clear()
                bpy.ops.bim.activate_status_filters()

-        subcontext = ifcopenshell.util.representation.get_context(tool.Ifc.get(), "Model", "Body", "MODEL_VIEW")
-
        for obj in context.visible_objects:
            element = tool.Ifc.get_entity(obj)
            if not element:
@@ -1463,52 +1506,61 @@ class ActivateModel(bpy.types.Operator):
                        is_global=True,
                        should_sync_changes_first=True,
                    )
+
+        # restore visibility after hide_view_clear()
+        for obj, hide_status in visibility_status.items():
+            obj.hide_set(hide_status)
+
        tool.Blender.update_viewport()
        return {"FINISHED"}


 class ActivateDrawing(bpy.types.Operator):
-    """
-    Activates the selected drawing view
-    """
-
    bl_idname = "bim.activate_drawing"
    bl_label = "Activate Drawing"
    bl_options = {"REGISTER", "UNDO"}
-    bl_description = "Activates the selected drawing view.\n\n" + "ALT+CLICK to keep the viewport position"
+    bl_description = "Activates the selected drawing view.\n\n" + "ALT+CLICK to keep the viewport position.\n\n" + "SHIFT+CLICK activiate drawing without turning objects on/off."

    drawing: bpy.props.IntProperty()
    camera_view_point: bpy.props.BoolProperty(name="Camera View Point", default=True, options={"SKIP_SAVE"})
+    switch_camera_only: bpy.props.BoolProperty(name="Only Changes Camera View", default=False, options={"SKIP_SAVE"})

    def invoke(self, context, event):
        # keep the viewport position on alt+click
        # make sure to use SKIP_SAVE on property, otherwise it might get stuck
        if event.type == "LEFTMOUSE" and event.alt:
            self.camera_view_point = False
+        # Only activates the camera view on alt+shift.  Does not turn on/off objects in scene
+        if event.type == "LEFTMOUSE" and event.shift:
+            self.switch_camera_only = True
        return self.execute(context)

    def execute(self, context):
        drawing = tool.Ifc.get().by_id(self.drawing)
        dprops = bpy.context.scene.DocProperties
+        camera = tool.Drawing.import_drawing(drawing)

-        if not self.camera_view_point:
-            viewport_position = tool.Blender.get_viewport_position()
+        if self.switch_camera_only:
+            tool.Blender.activate_camera(camera)
+        else:
+            if not self.camera_view_point:
+                viewport_position = tool.Blender.get_viewport_position()

-        core.activate_drawing_view(tool.Ifc, tool.Drawing, drawing=drawing)

-        if not self.camera_view_point:
-            tool.Blender.set_viewport_position(viewport_position)

-        dprops.active_drawing_id = self.drawing
-        # reset DrawingsData to reload_drawing_styles work correctly
-        DrawingsData.is_loaded = False
-        dprops.drawing_styles.clear()
-        if ifcopenshell.util.element.get_pset(drawing, "EPset_Drawing", "HasUnderlay"):
-            bpy.ops.bim.reload_drawing_styles()
-            bpy.ops.bim.activate_drawing_style()
-        core.sync_references(tool.Ifc, tool.Collector, tool.Drawing, drawing=tool.Ifc.get().by_id(self.drawing))
-        CutDecorator.install(context)
-        tool.Drawing.show_decorations()
+            if not self.camera_view_point:
+                tool.Blender.set_viewport_position(viewport_position)
+
+            dprops.active_drawing_id = self.drawing
+            # reset DrawingsData to reload_drawing_styles work correctly
+            DrawingsData.is_loaded = False
+            dprops.drawing_styles.clear()
+            if ifcopenshell.util.element.get_pset(drawing, "EPset_Drawing", "HasUnderlay"):
+                bpy.ops.bim.reload_drawing_styles()
+                bpy.ops.bim.activate_drawing_style()
+            core.sync_references(tool.Ifc, tool.Collector, tool.Drawing, drawing=tool.Ifc.get().by_id(self.drawing))
+            CutDecorator.install(context)
+            tool.Drawing.show_decorations()
        return {"FINISHED"}


@@ -1588,7 +1640,7 @@ class ReloadDrawingStyles(bpy.types.Operator):
        if not DrawingsData.is_loaded:
            DrawingsData.load()
        drawing_pset_data = DrawingsData.data["active_drawing_pset_data"]
-        camera_props = context.active_object.data.BIMCameraProperties
+        camera_props = context.scene.camera.data.BIMCameraProperties

        # added this part as a temporary fallback
        # TODO: should remove it a bit later when projects get more accommodated
@@ -1617,8 +1669,14 @@ class ReloadDrawingStyles(bpy.types.Operator):

        json_path = Path(tool.Ifc.resolve_uri(rel_path))
        if not json_path.exists():
-            self.report({"ERROR"}, "Shading styles file not found: {}".format(json_path))
-            return {"CANCELLED"}
+            ootb_resource = Path(context.scene.BIMProperties.data_dir) / "assets" / "shading_styles.json"
+            print(
+                f"WARNING. Couldn't find shading_styles for the drawing by the path: {json_path}. "
+                f"Default BBIM resource will be copied from {ootb_resource}"
+            )
+            if ootb_resource.exists():
+                os.makedirs(json_path.parent, exist_ok=True)
+                shutil.copy(ootb_resource, json_path)

        with open(json_path, "r") as fi:
            shading_styles_json = json.load(fi)
@@ -1981,12 +2039,14 @@ class AddScheduleToSheet(bpy.types.Operator, Operator):
            return

        reference = tool.Ifc.run("document.add_reference", information=sheet)
-        id_attr = "ItemReference" if tool.Ifc.get_schema() == "IFC2X3" else "Identification"
-        attributes = {
-            id_attr: str(len([r for r in references if r.Description in ("DRAWING", "SCHEDULE")]) + 1),
-            "Location": schedule_location,
-            "Description": "SCHEDULE",
-        }
+        attributes = tool.Drawing.generate_reference_attributes(
+            reference,
+            Identification=str(
+                len([r for r in references if tool.Drawing.get_reference_description(r) in ("DRAWING", "SCHEDULE")]) + 1
+            ),
+            Location=schedule_location,
+            Description="SCHEDULE",
+        )
        tool.Ifc.run("document.edit_reference", reference=reference, attributes=attributes)

        sheet_builder = sheeter.SheetBuilder()
@@ -2035,12 +2095,15 @@ class AddReferenceToSheet(bpy.types.Operator, Operator):
            return

        reference = tool.Ifc.run("document.add_reference", information=sheet)
-        id_attr = "ItemReference" if tool.Ifc.get_schema() == "IFC2X3" else "Identification"
-        attributes = {
-            id_attr: str(len([r for r in references if r.Description in ("DRAWING", "REFERENCE")]) + 1),
-            "Location": extref_location,
-            "Description": "REFERENCE",
-        }
+        attributes = tool.Drawing.generate_reference_attributes(
+            reference,
+            Identification=str(
+                len([r for r in references if tool.Drawing.get_reference_description(r) in ("DRAWING", "REFERENCE")])
+                + 1
+            ),
+            Location=extref_location,
+            Description="REFERENCE",
+        )
        tool.Ifc.run("document.edit_reference", reference=reference, attributes=attributes)

        sheet_builder = sheeter.SheetBuilder()
@@ -2299,8 +2362,16 @@ class AssignSelectedObjectAsProduct(bpy.types.Operator):

    def execute(self, context):
        objs = context.selected_objects[:]
-        objs.remove(context.active_object)
-        other_selected_object = next(obj for obj in context.selected_objects if obj != context.active_object)
+        obj1 = objs[0]
+        element1 = tool.Ifc.get_entity(obj1)
+        obj2 = objs[1]
+        element2 = tool.Ifc.get_entity(obj2)
+        if element1.is_a("IfcAnnotation"):
+            other_selected_object = obj2
+            bpy.context.view_layer.objects.active = obj1
+        elif element2.is_a("IfcAnnotation"):
+            other_selected_object = obj1
+            bpy.context.view_layer.objects.active = obj2
        context.active_object.BIMAssignedProductProperties.relating_product = other_selected_object
        bpy.ops.bim.edit_assigned_product()
        return {"FINISHED"}
@@ -2358,6 +2429,7 @@ class LoadSheets(bpy.types.Operator, Operator):
            if not filepath.is_file():
                sheet_name = f"{sheet_prop.identification} - {sheet_prop.name}"
                sheets_not_found.append(f'"{sheet_name}" - {document_uri}')
+                core.regenerate_sheet(tool.Drawing, sheet)

        if sheets_not_found:
            self.report({"ERROR"}, "Some sheets svg files are missing:\n" + "\n".join(sheets_not_found))
@@ -2376,8 +2448,8 @@ class EditSheet(bpy.types.Operator, Operator):
        if sheet.is_a("IfcDocumentInformation"):
            self.document_type = "SHEET"
            self.name = sheet.Name
-            self.identification = sheet.Identification
-        elif sheet.is_a("IfcDocumentReference") and sheet.Description == "TITLEBLOCK":
+            self.identification = sheet.DocumentId if tool.Ifc.get_schema() == "IFC2X3" else sheet.Identification
+        elif sheet.is_a("IfcDocumentReference") and tool.Drawing.get_reference_description(sheet) == "TITLEBLOCK":
            self.document_type = "TITLEBLOCK"
        else:
            self.document_type = "EMBEDDED"
@@ -2403,7 +2475,7 @@ class EditSheet(bpy.types.Operator, Operator):
        if self.document_type == "SHEET":
            core.rename_sheet(tool.Ifc, tool.Drawing, sheet=sheet, identification=self.identification, name=self.name)
        elif self.document_type == "EMBEDDED":
-            core.rename_reference(tool.Ifc, reference=sheet, identification=self.identification)
+            core.rename_reference(tool.Ifc, tool.Drawing, reference=sheet, identification=self.identification)
        elif self.document_type == "TITLEBLOCK":
            titleblock = self.props.titleblock
            reference = sheet
@@ -2555,8 +2627,16 @@ class EnableEditingElementFilter(bpy.types.Operator, Operator):

    def _execute(self, context):
        obj = bpy.context.scene.camera
-        if obj:
-            obj.data.BIMCameraProperties.filter_mode = self.filter_mode
+        if not obj:
+            return
+        obj.data.BIMCameraProperties.filter_mode = self.filter_mode
+        element = tool.Ifc.get_entity(obj)
+        if query := ifcopenshell.util.element.get_pset(element, "EPset_Drawing", self.filter_mode.title()):
+            filter_groups = tool.Search.get_filter_groups(f"drawing_{self.filter_mode.lower()}")
+            try:
+                tool.Search.import_filter_query(query, filter_groups)
+            except:
+                pass


 class EditElementFilter(bpy.types.Operator, Operator):
@@ -2698,3 +2778,50 @@ class AddReferenceImage(bpy.types.Operator, Operator):
        )
        tool.Style.reload_material_from_ifc(material)
        tool.Geometry.record_object_materials(obj)
+
+
+class ConvertSVGToDXF(bpy.types.Operator):
+    bl_idname = "bim.convert_svg_to_dxf"
+    bl_label = "Convert SVG to DXF"
+    bl_options = {"REGISTER", "UNDO"}
+    view: bpy.props.StringProperty()
+    bl_description = "Convert current drawing's .svg to .dxf.\n\nSHIFT+CLICK to convert all selected drawings"
+    convert_all: bpy.props.BoolProperty(name="Convert All", default=False, options={"SKIP_SAVE"})
+
+    def invoke(self, context, event):
+        # convert all drawings on shift+click
+        # make sure to use SKIP_SAVE on property, otherwise it might get stuck
+        if event.type == "LEFTMOUSE" and event.shift:
+            self.open_all = True
+        return self.execute(context)
+
+    def execute(self, context):
+        if self.convert_all:
+            drawings = [
+                tool.Ifc.get().by_id(d.ifc_definition_id) for d in context.scene.DocProperties.drawings if d.is_selected
+            ]
+        else:
+            drawings = [tool.Ifc.get().by_id(context.scene.DocProperties.drawings.get(self.view).ifc_definition_id)]
+
+        drawing_uris: list[Path] = []
+        drawings_not_found: list[str] = []
+
+        for drawing in drawings:
+            drawing_uri = tool.Drawing.get_document_uri(tool.Drawing.get_drawing_document(drawing))
+            if drawing_uri is None or not os.path.exists(drawing_uri):
+                drawings_not_found.append(drawing.Name)
+            else:
+                drawing_uris.append(Path(drawing_uri))
+
+        if drawings_not_found:
+            msg = "Some drawings .svg files were not found, need to print them first: \n{}.".format(
+                "\n".join(drawings_not_found)
+            )
+            self.report({"ERROR"}, msg)
+            return {"CANCELLED"}
+
+        for drawing_uri in drawing_uris:
+            tool.Drawing.convert_svg_to_dxf(drawing_uri, drawing_uri.with_suffix(".dxf"))
+
+        self.report({"INFO"}, f"{len(drawing_uris)} drawings were converted to .dxf.")
+        return {"FINISHED"}
@@ -66,6 +66,11 @@ def get_location_hint(self, context):


 def update_diagram_scale(self, context):
+    if not context.scene.camera or context.scene.camera.data != self.id_data:
+        return
+    element = tool.Ifc.get_entity(context.scene.camera)
+    if not element:
+        return
    try:
        element = (
            tool.Ifc.get()
@@ -87,6 +92,11 @@ def update_diagram_scale(self, context):


 def update_is_nts(self, context):
+    if not context.scene.camera or context.scene.camera.data != self.id_data:
+        return
+    element = tool.Ifc.get_entity(context.scene.camera)
+    if not element:
+        return
    try:
        element = (
            tool.Ifc.get()
@@ -194,7 +204,7 @@ def update_document_name(self, context):
 def update_has_underlay(self, context):
    update_layer(self, context, "HasUnderlay", self.has_underlay)
    # making sure that camera is active
-    if self.has_underlay and (context.active_object and context.active_object.data == self.id_data):
+    if self.has_underlay and (context.scene.camera and context.scene.camera.data == self.id_data):
        bpy.ops.bim.reload_drawing_styles()
        bpy.ops.bim.activate_drawing_style()

@@ -208,10 +218,12 @@ def update_has_annotation(self, context):


 def update_layer(self, context, name, value):
-    element = tool.Ifc.get_entity(context.active_object)
+    if not context.scene.camera or context.scene.camera.data != self.id_data:
+        return
+    element = tool.Ifc.get_entity(context.scene.camera)
    if not element:
        return
-    pset = ifcopenshell.util.element.get_psets(element).get("EPset_Drawing")
+    pset = ifcopenshell.util.element.get_pset(element, "EPset_Drawing")
    if pset:
        pset = tool.Ifc.get().by_id(pset["id"])
    else:
@@ -229,9 +241,8 @@ def update_titleblocks(self, context):
    SheetsData.data["titleblocks"] = SheetsData.titleblocks()


-def toggleDecorations(self, context):
-    toggle = self.should_draw_decorations
-    if toggle:
+def update_should_draw_decorations(self, context):
+    if self.should_draw_decorations:
        # TODO: design a proper text variable templating renderer
        collection = context.scene.camera.BIMObjectProperties.collection
        for obj in collection.objects:
@@ -304,9 +315,7 @@ class RasterStyleProperty(enum.Enum):
    SPACE_SHADING = "space.shading"


-RASTER_STYLE_PROPERTIES_EXCLUDE = (
-    "scene.render.filepath",
-)
+RASTER_STYLE_PROPERTIES_EXCLUDE = ("scene.render.filepath",)


 class DocProperties(PropertyGroup):
@@ -343,7 +352,7 @@ class DocProperties(PropertyGroup):
    active_sheet_index: IntProperty(name="Active Sheet Index")
    ifc_files: CollectionProperty(name="IFCs", type=StrProperty)
    drawing_styles: CollectionProperty(name="Drawing Styles", type=DrawingStyle)
-    should_draw_decorations: BoolProperty(name="Should Draw Decorations", update=toggleDecorations)
+    should_draw_decorations: BoolProperty(name="Should Draw Decorations", update=update_should_draw_decorations)
    sheets_dir: StringProperty(default=os.path.join("sheets") + os.path.sep, name="Default Sheets Directory")
    layouts_dir: StringProperty(default=os.path.join("layouts") + os.path.sep, name="Default Layouts Directory")
    titleblocks_dir: StringProperty(
@@ -360,6 +369,8 @@ class DocProperties(PropertyGroup):
        default=os.path.join("drawings", "assets", "shading_styles.json"), name="Default Shading Styles"
    )
    shadingstyle_default: StringProperty(default="Blender Default", name="Default Shading Style")
+    drawing_font: StringProperty(default="OpenGost Type B TT.ttf", name="Drawing Font")
+    magic_font_scale: bpy.props.FloatProperty(default=0.004118616, name="Font Scale Factor")


 class BIMCameraProperties(PropertyGroup):
@@ -16,22 +16,21 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

-from blenderbim.bim.module.drawing.svgwriter import SvgWriter
+import os
+import re
+import bpy
+import string
 import svgwrite
 import openpyxl

+from blenderbim.bim.module.drawing.svgwriter import SvgWriter
 from odf.opendocument import load as load_ods
 from odf.table import Table, TableRow, TableColumn, TableCell
 from odf.text import P
 from odf.style import Style
 from textwrap import wrap
 from pathlib import Path
-import string

-FONT_SIZE = 4.13
-FONT_WIDTH = lambda size: size * 0.45
-FONT_SIZE_PT = 12
-FONT_FAMILY = "OpenGost Type B TT"
 DEBUG = False


@@ -63,11 +62,29 @@ class Scheduler:
        )
        self.padding = 1
        self.margin = 1
+
+        self.parse_css(infile)
        if infile.endswith("ods"):
            self.schedule_ods(infile, outfile)
        elif infile.endswith("xlsx"):
            self.schedule_xlsx(infile, outfile)

+    def parse_css(self, infile):
+        stylesheet_path = os.path.splitext(infile)[0] + ".css"
+        if not os.path.exists(stylesheet_path):
+            stylesheet_path = os.path.join(bpy.context.scene.BIMProperties.data_dir, "assets", "schedule.css")
+        with open(stylesheet_path, "r") as stylesheet:
+            css = stylesheet.read()
+
+        matches = re.search("--font-size-pt:\s*([0-9.]+);", css)
+        self.font_size_pt = float(matches.groups()[0]) if matches else 12  # Default to 12pt
+        matches = re.search("--font-size-px:\s*([0-9.]+);", css)
+        self.font_size_px = float(matches.groups()[0]) if matches else 4.13  # Magic number 4.13px ~= 12pt
+        matches = re.search("--font-width:\s*([0-9.]+);", css)
+        self.font_width = float(matches.groups()[0]) if matches else 0.45  # A magic number for OpenGost
+
+        self.svg.defs.add(self.svg.style(css))
+
    def schedule_xlsx(self, infile, outfile):
        workbook = openpyxl.open(infile, data_only=True)
        sheet = workbook.active
@@ -144,8 +161,8 @@ class Scheduler:
                    x += unmerged_width
                    continue

-                font_size = cell.font.size or 11  # 11pt default
-                font_size = font_size / FONT_SIZE_PT * FONT_SIZE  # Magic?
+                font_size = cell.font.size or self.font_size_pt  # 12pt default
+                font_size = font_size / self.font_size_pt * self.font_size_px  # Magic?

                text_position = [0.0, 0.0]
                if cell.alignment.horizontal == "left":
@@ -424,9 +441,9 @@ class Scheduler:
                        italic_text = final_cell_style.get("font-style", None) == "italic"
                        # NOTE: very naive since we're scaling text proportionally
                        font_size = (
-                            float(final_cell_style.get("font-size", f"{FONT_SIZE_PT}pt")[:-2])
-                            / FONT_SIZE_PT
-                            * FONT_SIZE
+                            float(final_cell_style.get("font-size", f"{self.font_size_pt}pt")[:-2])
+                            / self.font_size_pt
+                            * self.font_size_px
                        )

                        if p_tags:
@@ -523,10 +540,7 @@ class Scheduler:
        """
        text_lines = [str(p) for p in p_tags]
        box_alignment_params = SvgWriter.get_box_alignment_parameters(box_alignment)
-        text_params = {
-            "font-size": font_size,
-            "font-family": FONT_FAMILY,
-        }
+        text_params = {"font-size": font_size}
        if bold:
            text_params["font-weight"] = "bold"
        if italic:
@@ -546,13 +560,13 @@ class Scheduler:

        text_tag = self.svg.text("", **(text_params | {"font-size": "0"} | box_alignment_params))

-        # TODO: should be done in less naive way
-        # without using magic number for FONT_WIDTH
-        # currently it might not work for all fonts and font sizes
+        # TODO: Should be done without using magic number for self.font_width 
        if wrap_text:
            wrapped_lines = []
            for line in text_lines:
-                wrapped_line = wrap(line, width=int(cell_width // FONT_WIDTH(font_size)), break_long_words=False)
+                wrapped_line = wrap(
+                    line, width=int(cell_width // (font_size * self.font_width)), break_long_words=False
+                )
                wrapped_lines.extend(wrapped_line)
        else:
            wrapped_lines = text_lines
@@ -41,7 +41,7 @@ class SheetBuilder:
        self.data_dir = None
        self.scale = "NTS"

-    def create(self, layout_path, titleblock_name):
+    def create(self, layout_path: str, titleblock_name: str) -> None:
        root = ET.Element("svg")
        root.attrib["xmlns"] = "http://www.w3.org/2000/svg"
        root.attrib["xmlns:xlink"] = "http://www.w3.org/1999/xlink"
@@ -76,7 +76,12 @@ class SheetBuilder:
        with open(layout_path, "w") as f:
            f.write(minidom.parseString(ET.tostring(root)).toprettyxml(indent="    "))

-    def add_drawing(self, reference, drawing, sheet):
+    def add_drawing(
+        self,
+        reference: ifcopenshell.entity_instance,
+        drawing: ifcopenshell.entity_instance,
+        sheet: ifcopenshell.entity_instance,
+    ) -> None:
        filename = drawing.Name
        layout_path = tool.Drawing.get_document_uri(sheet, "LAYOUT")
        layout_dir = os.path.dirname(layout_path)
@@ -131,7 +136,7 @@ class SheetBuilder:
        )
        layout_tree.write(layout_path)

-    def update_sheet_drawing_sizes(self, sheet):
+    def update_sheet_drawing_sizes(self, sheet: ifcopenshell.entity_instance) -> None:
        ET.register_namespace("", "http://www.w3.org/2000/svg")

        layout_path = tool.Drawing.get_document_uri(sheet, "LAYOUT")
@@ -171,7 +176,7 @@ class SheetBuilder:

        layout_tree.write(layout_path)

-    def remove_drawing(self, reference, sheet):
+    def remove_drawing(self, reference: ifcopenshell.entity_instance, sheet: ifcopenshell.entity_instance) -> None:
        ET.register_namespace("", "http://www.w3.org/2000/svg")

        layout_path = tool.Drawing.get_document_uri(sheet, "LAYOUT")
@@ -187,7 +192,12 @@ class SheetBuilder:

        layout_tree.write(layout_path)

-    def add_document(self, reference, document, sheet):
+    def add_document(
+        self,
+        reference: ifcopenshell.entity_instance,
+        document: ifcopenshell.entity_instance,
+        sheet: ifcopenshell.entity_instance,
+    ) -> None:
        view_path = tool.Drawing.get_path_with_ext(tool.Drawing.get_document_uri(document), "svg")
        if not os.path.exists(view_path):
            tool.Drawing.create_svg_document(document)
@@ -224,7 +234,7 @@ class SheetBuilder:
        )
        layout_tree.write(layout_path)

-    def add_view_title(self, x, y, parent, layout_dir):
+    def add_view_title(self, x: float, y: float, parent: ET.Element, layout_dir: str) -> None:
        title_path = os.path.join(layout_dir, "assets", "view-title.svg")
        os.makedirs(os.path.dirname(title_path), exist_ok=True)
        if not os.path.exists(title_path):
@@ -241,7 +251,7 @@ class SheetBuilder:
        title.attrib["width"] = str(self.convert_to_mm(title_root.attrib.get("width")))
        title.attrib["height"] = str(self.convert_to_mm(title_root.attrib.get("height")))

-    def build(self, sheet):
+    def build(self, sheet: ifcopenshell.entity_instance) -> dict:
        self.references = {"SHEET": None, "RASTER": []}

        layout_path = tool.Drawing.get_document_uri(sheet, "LAYOUT")
@@ -272,7 +282,7 @@ class SheetBuilder:

        return self.references

-    def build_titleblock(self, root, sheet):
+    def build_titleblock(self, root: ET.Element, sheet: ifcopenshell.entity_instance) -> None:
        titleblock = root.findall('{http://www.w3.org/2000/svg}g[@data-type="titleblock"]')[0]
        image = titleblock.findall("{http://www.w3.org/2000/svg}image")[0]
        g = self.parse_embedded_svg(image, sheet.get_info())
@@ -285,7 +295,7 @@ class SheetBuilder:
        titleblock.append(g)
        titleblock.remove(image)

-    def ensure_drawing_unique_styles(self, svg, drawing_id):
+    def ensure_drawing_unique_styles(self, svg: ET.Element, drawing_id: int) -> ET.Element:
        """ensures all drawing's classes and ids will be unique for the whole sheet
        by adding `drawing_id` based prefix
        """
@@ -313,7 +323,7 @@ class SheetBuilder:
                brackets_level -= 1
            text += l

-        def replace_urls(text):
+        def replace_urls(text: str) -> str:
            """replace urls `url(#marker)` with `url(#prefix-marker)`
            since `url(#marker.prefix)` doesn't seem to work
            """
@@ -343,7 +353,7 @@ class SheetBuilder:

        return svg

-    def build_drawings(self, root, sheet):
+    def build_drawings(self, root: ET.Element, sheet: ifcopenshell.entity_instance):
        for view in root.findall('{http://www.w3.org/2000/svg}g[@data-type="drawing"]'):
            drawing_id = int(view.attrib["data-id"])
            try:
@@ -390,7 +400,7 @@ class SheetBuilder:
            for image in images:
                view.remove(image)

-    def build_documents(self, root, sheet):
+    def build_documents(self, root: ET.Element, sheet: ifcopenshell.entity_instance) -> None:
        schedules = root.findall('{http://www.w3.org/2000/svg}g[@data-type="schedule"]')
        references = root.findall('{http://www.w3.org/2000/svg}g[@data-type="reference"]')
        documents = schedules + references
@@ -427,10 +437,10 @@ class SheetBuilder:
            for image in images:
                view.remove(image)

-    def get_href(self, element):
-        return urllib.parse.unquote(element.attrib.get("{http://www.w3.org/1999/xlink}href")).replace('\\','/')
+    def get_href(self, element: ET.Element) -> str:
+        return urllib.parse.unquote(element.attrib.get("{http://www.w3.org/1999/xlink}href")).replace("\\", "/")

-    def parse_embedded_svg(self, image, data):
+    def parse_embedded_svg(self, image: ET.Element, data: dict) -> ET.Element:
        group = ET.Element("g")
        group.attrib["transform"] = "translate({},{})".format(
            self.convert_to_mm(image.attrib.get("x")), self.convert_to_mm(image.attrib.get("y"))
@@ -466,7 +476,7 @@ class SheetBuilder:
            group.append(child)
        return group

-    def change_titleblock(self, sheet, titleblock_name):
+    def change_titleblock(self, sheet: ifcopenshell.entity_instance, titleblock_name: str) -> None:
        ootb_titleblock_path = os.path.join(self.data_dir, "templates", "titleblocks", titleblock_name + ".svg")
        titleblock_path = tool.Drawing.get_default_titleblock_path(titleblock_name)
        sheet_path = tool.Drawing.get_document_uri(sheet, "LAYOUT")
@@ -499,7 +509,7 @@ class SheetBuilder:

        sheet_tree.write(sheet_path)

-    def convert_to_mm(self, value):
+    def convert_to_mm(self, value: str) -> float:
        # CSS is what defines these possibilities
        # https://www.w3.org/TR/SVG/refs.html#ref-css-values-3
        # https://www.w3.org/TR/css-values-3/#absolute-lengths
@@ -520,5 +530,5 @@ class SheetBuilder:
            return float(value[0:-2]) * (1 / 96) * 2.54 * 10
        return float(value)

-    def mm_to_px(self, value):
+    def mm_to_px(self, value: float) -> float:
        return (value / 25.4) * 96
@@ -22,16 +22,17 @@ import bpy
 import math
 import bmesh
 import shutil
-import pystache
 import mathutils
 import xml.etree.ElementTree as ET
 import svgwrite
 import ifcopenshell
 import ifcopenshell.util.element
 import ifcopenshell.util.representation
+import ifcopenshell.util.selector
 import blenderbim.tool as tool
 import blenderbim.bim.module.drawing.helper as helper
 import blenderbim.bim.module.drawing.annotation as annotation
+from blenderbim.bim.module.drawing.data import DrawingsData

 from blenderbim.bim.module.drawing.data import DecoratorData
 from blenderbim.bim.ifc import IfcStore
@@ -39,6 +40,7 @@ from blenderbim.bim.ifc import IfcStore
 from math import pi, ceil, atan, degrees, acos
 from mathutils import geometry, Vector
 from bpy_extras import view3d_utils
+from typing import Optional


 class External(svgwrite.container.Group):
@@ -90,7 +92,7 @@ class SvgWriter:

    def setup_drawing_resource_paths(self, element):
        pset = ifcopenshell.util.element.get_pset(element, "EPset_Drawing")
-        for resource in ("Stylesheet", "Markers", "Symbols", "Patterns"):
+        for resource in ("Stylesheet", "Markers", "Symbols", "Patterns", "ShadingStyles"):
            resource_path = pset.get(resource)
            if not resource_path:
                self.resource_paths[resource] = None
@@ -322,7 +324,7 @@ class SvgWriter:
                )
            )

-    def draw_misc_annotation(self, obj):
+    def draw_misc_annotation(self, obj: bpy.types.Object) -> None:
        # We have to decide whether this should come from Blender or from IFC.
        # For the moment, for convenience of experimenting with ideas, it comes
        # from Blender. In the future, it should probably come from IFC.
@@ -356,14 +358,14 @@ class SvgWriter:
            d = "M{}".format(d[1:])
            path = self.svg.add(self.svg.path(d=d, class_=" ".join(classes)))

-    def get_attribute_classes(self, obj):
+    def get_attribute_classes(self, obj: bpy.types.Object) -> list[str]:
        element = tool.Ifc.get_entity(obj)
        global_id = "GlobalId-{}".format(element.GlobalId)
        predefined_type = "PredefinedType-" + tool.Drawing.canonicalise_class_name(
            str(ifcopenshell.util.element.get_predefined_type(element))
        )
        classes = [global_id, element.is_a(), predefined_type]
-        custom_classes = ifcopenshell.util.element.get_pset(element, "EPset_Annotation", "Classes")
+        custom_classes: str = ifcopenshell.util.element.get_pset(element, "EPset_Annotation", "Classes")
        if custom_classes:
            classes.extend(custom_classes.split())
        for key in self.metadata:
@@ -716,14 +718,15 @@ class SvgWriter:
            self.svg.text(sheet_id, insert=(text_position[0], text_position[1] + 2.5), class_="ELEVATION", **text_style)
        )

-    def get_reference_and_sheet_id_from_annotation(self, element):
+    def get_reference_and_sheet_id_from_annotation(self, element: ifcopenshell.entity_instance) -> tuple[str, str]:
        reference_id = "-"
        sheet_id = "-"
        drawing = tool.Drawing.get_annotation_element(element)
        reference = tool.Drawing.get_drawing_reference(drawing)
        if reference:
            for sheet_reference in tool.Ifc.get().by_type("IfcDocumentReference"):
-                if sheet_reference.Description != "DRAWING" or sheet_reference.Location != reference.Location:
+                reference_description = tool.Drawing.get_reference_description(sheet_reference)
+                if reference_description != "DRAWING" or sheet_reference.Location != reference.Location:
                    continue
                sheet = tool.Drawing.get_reference_document(sheet_reference)
                if sheet:
@@ -787,7 +790,7 @@ class SvgWriter:
        attrib["filter"] = "url(#fill-background)"
        return element

-    def draw_text_annotation(self, text_obj, position):
+    def draw_text_annotation(self, text_obj: bpy.types.Object, position: Vector) -> None:
        x_offset = self.raw_width / 2
        y_offset = self.raw_height / 2
        element = tool.Ifc.get_entity(text_obj)
@@ -799,17 +802,7 @@ class SvgWriter:
        text_position_svg = text_position * self.svg_scale
        text_position_svg_str = ", ".join(map(str, text_position_svg))

-        def get_basis_vector(matrix, i=0):
-            """returns basis vector for i in world space, unaffected by object scale"""
-            return matrix.inverted()[i].to_3d().normalized()
-
-        text_dir_world_x_axis = get_basis_vector(text_obj.matrix_world)
-
-        # RCP cameras may be scaled, so reset scales.
-        camera_matrix = tool.Drawing.get_camera_matrix(self.camera)
-        text_dir = (camera_matrix.inverted().to_quaternion() @ text_dir_world_x_axis).to_2d().normalized()
-        angle = math.degrees(-text_dir.angle_signed(Vector((1, 0))))
-
+        angle = self.get_empty_object_angle(text_obj)
        classes = self.get_attribute_classes(text_obj)
        classes_str = " ".join(classes)
        fill_bg = "fill-bg" in classes
@@ -817,8 +810,7 @@ class SvgWriter:
        symbol = tool.Drawing.get_annotation_symbol(element)
        template_text_fields = []
        if symbol:
-            # NOTE: for now we assume that scale is uniform
-            symbol_transform = f"translate({text_position_svg_str}) rotate({angle}) scale({text_obj.scale.x})"
+            symbol_transform = self.get_symbol_transform(text_position_svg_str, angle, text_obj)

            symbol_svg = self.find_xml_symbol_by_id(symbol)
            if symbol_svg:
@@ -847,7 +839,7 @@ class SvgWriter:
                    return None

            if not symbol_svg or not template_text_fields:
-                self.svg.add(self.svg.use(f"#{symbol}", transform=symbol_transform))
+                self.draw_symbol(symbol, symbol_transform)

        line_number = 0
        for text_literal in text_literals:
@@ -865,17 +857,14 @@ class SvgWriter:
                self.svg.add(tag)
            line_number += len(tag.elements)

-    def draw_empty_annotation(self, obj, classes):
+    def draw_empty_annotation(self, obj: bpy.types.Object, classes: list[str]) -> None:
        x_offset = self.raw_width / 2
        y_offset = self.raw_height / 2

        point = self.project_point_onto_camera(obj.matrix_world.translation)

        element = tool.Ifc.get_entity(obj)
-        svg_id = ifcopenshell.util.element.get_pset(element, "EPset_Annotation", "Symbol")
-        if not svg_id:
-            # EPset_AnnotationSurveyArea is not standard! See bSI-4.3 proposal #660.
-            svg_id = ifcopenshell.util.element.get_pset(element, "EPset_AnnotationSurveyArea", "PointType")
+        svg_id = tool.Drawing.get_annotation_symbol(element)
        if not svg_id:
            svg_id = str(ifcopenshell.util.element.get_predefined_type(element))
        if not svg_id:
@@ -883,9 +872,37 @@ class SvgWriter:

        point = Vector(((x_offset + point.x), (y_offset - point.y)))
        symbol_position_svg = point * self.svg_scale
-        self.svg.add(self.svg.use(f"#{svg_id}", insert=symbol_position_svg))
+        svg_position_str = ", ".join(map(str, symbol_position_svg))

-    def draw_point_annotation(self, obj, classes):
+        angle = self.get_empty_object_angle(obj)
+        symbol_transform = self.get_symbol_transform(svg_position_str, angle, obj)
+        self.draw_symbol(svg_id, symbol_transform)
+
+    def get_empty_object_angle(self, obj: bpy.types.Object) -> float:
+        def get_basis_vector(matrix: bpy.types.Object, i: int = 0) -> Vector:
+            """returns basis vector for i in world space, unaffected by object scale"""
+            return matrix.inverted()[i].to_3d().normalized()
+
+        text_dir_world_x_axis = get_basis_vector(obj.matrix_world)
+
+        # RCP cameras may be scaled, so reset scales.
+        camera_matrix = tool.Drawing.get_camera_matrix(self.camera)
+        text_dir = (camera_matrix.inverted().to_quaternion() @ text_dir_world_x_axis).to_2d().normalized()
+        return math.degrees(-text_dir.angle_signed(Vector((1, 0))))
+
+    def get_symbol_transform(
+        self, svg_position_str: str, angle: float = 0.0, obj: Optional[bpy.types.Object] = None
+    ) -> str:
+        """`obj` will be used to identify symbol scale,
+        ignore it if object scale doesn't match the symbol scale"""
+        # NOTE: for now we assume that scale is uniform
+        scale = 1.0 if not obj else obj.scale.x
+        return f"translate({svg_position_str}) rotate({angle}) scale({scale})"
+
+    def draw_symbol(self, symbol_id: str, symbol_transform: str) -> None:
+        self.svg.add(self.svg.use(f"#{symbol_id}", transform=symbol_transform))
+
+    def draw_point_annotation(self, obj: bpy.types.Object, classes: list[str]) -> None:
        x_offset = self.raw_width / 2
        y_offset = self.raw_height / 2

@@ -893,10 +910,7 @@ class SvgWriter:
        projected_points = [self.project_point_onto_camera(matrix_world @ v.co) for v in obj.data.vertices]

        element = tool.Ifc.get_entity(obj)
-        svg_id = ifcopenshell.util.element.get_pset(element, "EPset_Annotation", "Symbol")
-        if not svg_id:
-            # EPset_AnnotationSurveyArea is not standard! See bSI-4.3 proposal #660.
-            svg_id = ifcopenshell.util.element.get_pset(element, "EPset_AnnotationSurveyArea", "PointType")
+        svg_id = tool.Drawing.get_annotation_symbol(element)
        if not svg_id:
            svg_id = str(ifcopenshell.util.element.get_predefined_type(element))
        if not svg_id:
@@ -905,7 +919,10 @@ class SvgWriter:
        for symbol_position in projected_points:
            symbol_position = Vector(((x_offset + symbol_position.x), (y_offset - symbol_position.y)))
            symbol_position_svg = symbol_position * self.svg_scale
-            self.svg.add(self.svg.use(f"#{svg_id}", insert=symbol_position_svg))
+            svg_position_str = ", ".join(map(str, symbol_position_svg))
+
+            symbol_transform = self.get_symbol_transform(svg_position_str)
+            self.draw_symbol(svg_id, symbol_transform)

    def draw_break_annotations(self, obj):
        x_offset = self.raw_width / 2
@@ -1066,7 +1083,9 @@ class SvgWriter:
        # calculating text parameters and adding text
        text_position = arc_mid_point + arc_mid_dir * 5
        text_style = SvgWriter.get_box_alignment_parameters("center")
-        angle_text = f"{int(angle)}deg"
+        drawing_pset_data = DrawingsData.data["active_drawing_pset_data"]
+        decimal_places = drawing_pset_data.get("AngleDecimalPlaces", None)
+        angle_text = f"{round(angle, decimal_places)}°"
        self.svg.add(self.svg.text(angle_text, insert=text_position, class_="ANGLE", **text_style))

        # Draw SVG arc, see for details: http://xahlee.info/js/svg_circle_arc.html
@@ -1402,7 +1421,7 @@ class SvgWriter:

        return text_tags

-    def project_point_onto_camera(self, point):
+    def project_point_onto_camera(self, point: Vector) -> Vector:
        # TODO is this needlessly complex?
        return self.camera.matrix_world.inverted() @ geometry.intersect_line_plane(
            point.xyz,
@@ -268,6 +268,11 @@ class BIM_PT_drawings(Panel):
                col = row.column()
                col.alignment = "RIGHT"

+                convert_to_dxf = row.row(align=True)
+                op = convert_to_dxf.operator("bim.convert_svg_to_dxf", text="", icon="IMAGE_DATA")
+                op.view = active_drawing.name
+                convert_to_dxf.enabled = active_drawing.ifc_definition_id > 0
+
                op = row.operator("bim.select_all_drawings", icon="SELECT_SUBTRACT", text="")

                open_drawing_button = row.row(align=True)
@@ -250,7 +250,7 @@ class AnnotationToolUI:
        row = cls.layout.row(align=True)
        row.label(text="", icon="FILE_3D")
        prop_with_search(row, cls.props, "relating_type_id", text="")
-        row.operator("bim.launch_annotation_type_manager", icon="LIGHTPROBE_GRID", text="")
+        row.operator("bim.launch_annotation_type_manager", icon=tool.Blender.TYPE_MANAGER_ICON, text="")

        add_layout_hotkey_operator(cls.layout, "Add", "S_A", "Create a new annotation")

@@ -22,13 +22,20 @@ from . import ui, prop, operator
 classes = (
    operator.AddRepresentation,
    operator.CopyRepresentation,
+    operator.DisableEditingRepresentationItemShapeAspect,
+    operator.DisableEditingRepresentationItemStyle,
    operator.DisableEditingRepresentationItems,
+    operator.DuplicateLinkedAggregateTo3dCursor,
+    operator.DuplicateMoveLinkedAggregate,
+    operator.DuplicateMoveLinkedAggregateMacro,
    operator.EditObjectPlacement,
+    operator.EditRepresentationItemShapeAspect,
+    operator.EditRepresentationItemStyle,
+    operator.EnableEditingRepresentationItemShapeAspect,
+    operator.EnableEditingRepresentationItemStyle,
    operator.EnableEditingRepresentationItems,
    operator.FlipObject,
    operator.GetRepresentationIfcParameters,
-    operator.DuplicateMoveLinkedAggregate,
-    operator.DuplicateMoveLinkedAggregateMacro,
    operator.OverrideDelete,
    operator.OverrideDuplicateMove,
    operator.OverrideDuplicateMoveLinked,
@@ -45,11 +52,15 @@ classes = (
    operator.RefreshLinkedAggregate,
    operator.RemoveConnection,
    operator.RemoveRepresentation,
+    operator.RemoveRepresentationItem,
+    operator.RemoveRepresentationItemFromShapeAspect,
    operator.SelectConnection,
    operator.SwitchRepresentation,
+    operator.UnassignRepresentationItemStyle,
    operator.UpdateParametricRepresentation,
    operator.UpdateRepresentation,
    prop.RepresentationItem,
+    prop.ShapeAspect,
    prop.BIMObjectGeometryProperties,
    prop.BIMGeometryProperties,
    ui.BIM_PT_placement,
@@ -93,7 +104,9 @@ def register():
        addon_keymaps.append((km, kmi))
        kmi = km.keymap_items.new("bim.override_object_duplicate_move_linked_macro", "D", "PRESS", alt=True)
        addon_keymaps.append((km, kmi))
-        kmi = km.keymap_items.new("bim.object_duplicate_move_linked_aggregate_macro", "D", "PRESS", ctrl=True, shift=True)
+        kmi = km.keymap_items.new(
+            "bim.object_duplicate_move_linked_aggregate_macro", "D", "PRESS", ctrl=True, shift=True
+        )
        addon_keymaps.append((km, kmi))
        kmi = km.keymap_items.new("bim.override_paste_buffer", "V", "PRESS", ctrl=True)
        addon_keymaps.append((km, kmi))
@@ -107,6 +120,7 @@ def register():

        km = wm.keyconfigs.addon.keymaps.new(name="Mesh", space_type="EMPTY")
        kmi = km.keymap_items.new("bim.override_mode_set_object", "TAB", "PRESS")
+        kmi.properties.should_save = True
        addon_keymaps.append((km, kmi))
        kmi = km.keymap_items.new("wm.call_menu", "P", "PRESS")
        kmi.properties.name = ui.BIM_MT_hotkey_separate.bl_idname
@@ -17,6 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

 import bpy
+import ifcopenshell.util.element
 import blenderbim.tool as tool
 import ifcopenshell.util.placement
 from mathutils import Vector
@@ -38,6 +39,7 @@ class RepresentationsData:
    def load(cls):
        cls.data = {"representations": cls.representations()}
        cls.data["contexts"] = cls.contexts()
+        cls.data["shape_aspects"] = cls.shape_aspects()
        cls.is_loaded = True

    @classmethod
@@ -92,6 +94,26 @@ class RepresentationsData:
            )
        return results

+    @classmethod
+    def shape_aspects(cls):
+        obj = bpy.context.active_object
+        if not obj.data:
+            return []
+        element = tool.Ifc.get_entity(obj)
+        active_representation_id = obj.data.BIMMeshProperties.ifc_definition_id
+        base_representation = tool.Ifc.get().by_id(active_representation_id)
+
+        # shape aspects matching context of the active representation
+        matching_shape_aspects = []
+        for shape_aspect in ifcopenshell.util.element.get_shape_aspects(element):
+            matching_representation = tool.Geometry.get_shape_aspect_representation(shape_aspect, base_representation)
+            if matching_representation:
+                matching_shape_aspects.append(shape_aspect)
+
+        # blender enum items
+        new_shape_aspect = [("NEW", "Create A New Shape Aspect", "")]
+        return new_shape_aspect + [(str(s.id()), s.Name or "Unnamed", "") for s in matching_shape_aspects]
+

 class RepresentationItemsData:
    data = {}
@@ -201,7 +223,7 @@ class ConnectionsData:
    @classmethod
    def is_connection_realization(cls):
        element = tool.Ifc.get_entity(bpy.context.active_object)
-        connections = element.IsConnectionRealization
+        connections = getattr(element, "IsConnectionRealization", None)
        if not connections:
            return

@@ -21,12 +21,14 @@ import bmesh
 import mathutils
 import ifcopenshell
 import ifcopenshell.util.unit
+import blenderbim.tool as tool
 from math import pi, pow
 from mathutils import Vector, Matrix, geometry
+from typing import Union


 class Helper:
-    def __init__(self, file):
+    def __init__(self, file: ifcopenshell.file):
        self.file = file
        self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)

@@ -34,7 +36,7 @@ class Helper:
    # edge that shares a single vertex only with that face to find the extrusion
    # edge. A face with the normal facing down is prioritised. A limited
    # dissolve ensure that faces are quads and not tris.
-    def auto_detect_rectangle_profile_extruded_area_solid(self, mesh):
+    def auto_detect_rectangle_profile_extruded_area_solid(self, mesh: bpy.types.Mesh) -> dict:
        bm = bmesh.new()
        bm.from_mesh(mesh)
        bmesh.ops.dissolve_limit(bm, angle_limit=pi / 180 * 1, verts=bm.verts, edges=bm.edges)
@@ -115,7 +117,9 @@ class Helper:

        return {"profile": profile, "extrusion": extrusion}

-    def auto_detect_arbitrary_profile_with_voids(self, obj, mesh):
+    def auto_detect_arbitrary_profile_with_voids(
+        self, obj: bpy.types.Object, mesh: bpy.types.Mesh
+    ) -> Union[tuple, dict]:
        groups = {"IFCARCINDEX": [], "IFCCIRCLE": []}
        for i, group in enumerate(obj.vertex_groups):
            if "IFCARCINDEX" in group.name:
@@ -138,28 +142,31 @@ class Helper:
            total_groups = 0
            is_circle = False
            for group_type, group_indices in groups.items():
-                for group_index in group_indices:
-                    if group_index in vert[deform_layer]:
-                        if group_type == "IFCCIRCLE":
-                            is_circle = True
-                        group_verts[group_type].setdefault(group_index, 0)
-                        group_verts[group_type][group_index] += 1
-                        total_groups += 0
+                if not group_indices:
+                    continue
+                is_special, group_index = tool.Blender.bmesh_check_vertex_in_groups(vert, deform_layer, group_indices)
+                if not is_special:
+                    continue
+                if group_type == "IFCCIRCLE":
+                    is_circle = True
+                group_verts[group_type].setdefault(group_index, 0)
+                group_verts[group_type][group_index] += 1
+                total_groups += 0
            if total_groups > 1:  # A vert can only belong to one group
                return (False, "AMBIGUOUS_SPECIAL_VERTEX")
            elif is_circle:
-                pass # Circles are allowed to be unclosed
+                pass  # Circles are allowed to be unclosed
            elif total_groups == 0 and len(vert.link_edges) != 2:  # Unclosed loop or forked loop
                return (False, "UNCLOSED_LOOP")

        for group_type, group_counts in group_verts.items():
            if group_type == "IFCARCINDEX":
                for group_count in group_counts.values():
-                    if group_count != 3: # Each arc needs 3 verts
+                    if group_count != 3:  # Each arc needs 3 verts
                        return (False, "3POINT_ARC")
            elif group_type == "IFCCIRCLE":
                for group_count in group_counts.values():
-                    if group_count != 2: # Each circle needs 2 verts
+                    if group_count != 2:  # Each circle needs 2 verts
                        return (False, "CIRCLE")

        loop_edges = set(bm.edges)
@@ -269,7 +276,7 @@ class Helper:
        inner_loops.remove(outer_loop)

        # Copy vectors to prevent random data mangling after bmesh is freed.
-        points = [Vector(list(v.co)) for v in bm.verts]
+        points = [v.co.copy() for v in bm.verts]

        bm.to_mesh(mesh)
        mesh.update()
@@ -531,7 +538,7 @@ class Helper:
        )
        position = None
        if self.file.schema == "IFC2X3":
-            position = self.file.createIfcAxis2Placement2D(self.file.createIfcCartesianPoint([0.0, 0.0, 0.0]))
+            position = self.file.createIfcAxis2Placement2D(self.file.createIfcCartesianPoint([0.0, 0.0]))
        curve = self.file.createIfcRectangleProfileDef("AREA", None, position, xdim, ydim)
        return {"curve_ucs": curve_ucs, "curve": curve}

@@ -21,11 +21,14 @@ import bmesh
 import logging
 import numpy as np
 import json
+import re
 import ifcopenshell
 import ifcopenshell.util.unit
 import ifcopenshell.util.element
 import ifcopenshell.util.representation
+import ifcopenshell.util.placement
 import ifcopenshell.api
+import blenderbim.core.geometry
 import blenderbim.core.geometry as core
 import blenderbim.core.aggregate
 import blenderbim.core.style
@@ -36,6 +39,8 @@ import blenderbim.bim.handler
 from mathutils import Vector, Matrix
 from time import time
 from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.util.shape_builder import ShapeBuilder
+from typing import Any


 class Operator:
@@ -133,19 +138,23 @@ class AddRepresentation(bpy.types.Operator, Operator):
                "for Profile - 2D bounding box by local XZ axes.\n"
                "For other contexts - bounding box is 3d.",
            ),
-            ("PROJECT", "Full Representation", ""),
+            ("OBJECT", "From Object", "Copies geometry from another object"),
+            ("PROJECT", "Full Representation", "Reuses the current representation"),
        ],
        name="Representation Conversion Method",
    )

    def _execute(self, context):
        obj = context.active_object
-        props = obj.BIMGeometryProperties
-        ifc_context = int(props.contexts or "0") or None
+        props = context.scene.BIMGeometryProperties
+        oprops = obj.BIMGeometryProperties
+        ifc_context = int(oprops.contexts or "0") or None
        if not ifc_context:
            return
        ifc_context = tool.Ifc.get().by_id(ifc_context)

+        original_data = obj.data
+
        if self.representation_conversion_method == "OUTLINE":
            if ifc_context.ContextType == "Plan":
                data = tool.Geometry.generate_outline_mesh(obj, axis="+Z")
@@ -162,17 +171,31 @@ class AddRepresentation(bpy.types.Operator, Operator):
            else:
                data = tool.Geometry.generate_3d_box_mesh(obj)
            tool.Geometry.change_object_data(obj, data, is_global=True)
+        elif (
+            self.representation_conversion_method == "OBJECT"
+            and props.representation_from_object
+            and props.representation_from_object.data
+        ):
+            data = tool.Geometry.duplicate_object_data(props.representation_from_object)
+            tool.Geometry.change_object_data(obj, data, is_global=True)

-        core.add_representation(
-            tool.Ifc,
-            tool.Geometry,
-            tool.Style,
-            tool.Surveyor,
-            obj=obj,
-            context=ifc_context,
-            ifc_representation_class=None,
-            profile_set_usage=None,
-        )
+        try:
+            core.add_representation(
+                tool.Ifc,
+                tool.Geometry,
+                tool.Style,
+                tool.Surveyor,
+                obj=obj,
+                context=ifc_context,
+                ifc_representation_class=None,
+                profile_set_usage=None,
+            )
+        except core.IncompatibleRepresentationError:
+            if obj.data != original_data:
+                tool.Geometry.change_object_data(obj, original_data, is_global=True)
+                bpy.data.meshes.remove(data)
+            self.report({"ERROR"}, "No compatible representation for the context could be created.")
+            return {"CANCELLED"}

    def invoke(self, context, event):
        return context.window_manager.invoke_props_dialog(self)
@@ -180,6 +203,9 @@ class AddRepresentation(bpy.types.Operator, Operator):
    def draw(self, context):
        row = self.layout.row()
        row.prop(self, "representation_conversion_method", text="")
+        if self.representation_conversion_method == "OBJECT":
+            row = self.layout.row()
+            row.prop(context.scene.BIMGeometryProperties, "representation_from_object", text="")


 class SelectConnection(bpy.types.Operator, Operator):
@@ -212,6 +238,13 @@ class SwitchRepresentation(bpy.types.Operator, Operator):
    disable_opening_subtractions: bpy.props.BoolProperty()
    should_switch_all_meshes: bpy.props.BoolProperty()

+    @classmethod
+    def poll(cls, context):
+        if context.active_object.mode == "OBJECT":
+            return True
+        cls.poll_message_set("Only available in OBJECT mode - Press TAB in the viewport")
+        return False
+
    def _execute(self, context):
        target_representation = tool.Ifc.get().by_id(self.ifc_definition_id)
        target = target_representation.ContextOfItems
@@ -220,6 +253,8 @@ class SwitchRepresentation(bpy.types.Operator, Operator):
            element = tool.Ifc.get_entity(obj)
            if not element:
                continue
+            if not obj.mode == "OBJECT":
+                continue
            if obj == context.active_object:
                representation = target_representation
            else:
@@ -321,8 +356,8 @@ class UpdateRepresentation(bpy.types.Operator, Operator):
                # We are explicitly casting to a tessellation, so remove all parametric materials.
                element_type = ifcopenshell.util.element.get_type(product)
                if element_type:  # Some invalid IFCs use material sets without a type.
-                    ifcopenshell.api.run("material.unassign_material", tool.Ifc.get(), product=element_type)
-                ifcopenshell.api.run("material.unassign_material", tool.Ifc.get(), product=product)
+                    ifcopenshell.api.run("material.unassign_material", tool.Ifc.get(), products=[element_type])
+                ifcopenshell.api.run("material.unassign_material", tool.Ifc.get(), products=[product])
            else:
                # These objects are parametrically based on an axis and should not be modified as a mesh
                return
@@ -367,7 +402,11 @@ class UpdateRepresentation(bpy.types.Operator, Operator):
            representation_data["profile_set_usage"] = tool.Geometry.get_profile_set_usage(product)
            representation_data["text_literal"] = tool.Geometry.get_text_literal(old_representation)

+        # TODO: replace with core.add_representation?
        new_representation = ifcopenshell.api.run("geometry.add_representation", self.file, **representation_data)
+        if new_representation is None:
+            self.report({"ERROR"}, "Error creating representation for Blender object.")
+            return {"CANCELLED"}

        if tool.Geometry.is_body_representation(new_representation):
            [
@@ -535,6 +574,8 @@ class OverrideDelete(bpy.types.Operator):
        row.prop(self, "is_batch", text="Enable Faster Deletion")

    def _execute(self, context):
+        start_time = time()
+
        if self.is_batch:
            ifcopenshell.util.element.batch_remove_deep2(tool.Ifc.get())

@@ -559,6 +600,11 @@ class OverrideDelete(bpy.types.Operator):
            IfcStore.add_transaction_operation(self)
        # Required otherwise gizmos are still visible
        context.view_layer.objects.active = None
+
+        operator_time = time() - start_time
+        if operator_time > 10:
+            self.report({"INFO"}, "IFC Delete was finished in {:.2f} seconds".format(operator_time))
+
        return {"FINISHED"}

    def rollback(self, data):
@@ -669,6 +715,10 @@ class OverrideOutlinerDelete(bpy.types.Operator):
            else:
                bpy.data.objects.remove(obj)
        for collection in collections_to_delete:
+            # Removing an aggregate object would also remove it's collection
+            # making the collection data-block invalid.
+            if not tool.Blender.is_valid_data_block(collection):
+                continue
            bpy.data.collections.remove(collection)
        if self.is_batch:
            old_file = tool.Ifc.get()
@@ -680,7 +730,7 @@ class OverrideOutlinerDelete(bpy.types.Operator):
            IfcStore.add_transaction_operation(self)
        return {"FINISHED"}

-    def get_collection_objects_and_children(self, collection):
+    def get_collection_objects_and_children(self, collection: bpy.types.Collection) -> dict[str, Any]:
        objects = set()
        children = set()
        queue = [collection]
@@ -767,11 +817,13 @@ class OverrideDuplicateMove(bpy.types.Operator):
            element = tool.Ifc.get_entity(obj)
            if element:
                if element.is_a("IfcAnnotation") and element.ObjectType == "DRAWING":
-                    self.report({'INFO'}, "Did not duplicate. Duplicate drawings through the Drawings and Documents UI.")
+                    self.report(
+                        {"INFO"}, "Did not duplicate. Duplicate drawings through the Drawings and Documents UI."
+                    )
                    obj.select_set(False)
                    continue  # For now, don't copy drawings until we stabilise a bit more. It's tricky.
                elif element.is_a("IfcProject"):
-                    self.report({'INFO'}, "Did not duplicate. IFC can only have one project.")
+                    self.report({"INFO"}, "Did not duplicate. IFC can only have one project.")
                    obj.select_set(False)
                    continue  # Only one IfcProject is allowed.

@@ -838,6 +890,7 @@ class OverrideDuplicateMove(bpy.types.Operator):

        # Recreate decompositions
        tool.Root.recreate_decompositions(decomposition_relationships, old_to_new)
+        OverrideDuplicateMove.remove_linked_aggregate_data(old_to_new)
        blenderbim.bim.handler.refresh_ui_data()
        return old_to_new

@@ -890,6 +943,22 @@ class OverrideDuplicateMove(bpy.types.Operator):
                if entity in old_to_new.keys():
                    core.remove_connection(tool.Geometry, connection=connection)

+    def remove_linked_aggregate_data(old_to_new):
+        for old, new in old_to_new.items():
+            pset = ifcopenshell.util.element.get_pset(new[0], "BBIM_Linked_Aggregate")
+            if pset:
+                pset = tool.Ifc.get().by_id(pset["id"])
+                ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=new[0],pset=pset)
+
+            if new[0].is_a("IfcElementAssembly"):
+                linked_aggregate_group = [
+                    r.RelatingGroup
+                    for r in getattr(new[0], "HasAssignments", []) or []
+                    if r.is_a("IfcRelAssignsToGroup")
+                    if "BBIM_Linked_Aggregate" in r.RelatingGroup.Name
+                ]
+                tool.Ifc.run("group.unassign_group", group=linked_aggregate_group[0], products=[new[0]])
+

 class OverrideDuplicateMoveLinkedMacro(bpy.types.Macro):
    bl_idname = "bim.override_object_duplicate_move_linked_macro"
@@ -914,14 +983,15 @@ class OverrideDuplicateMoveLinked(bpy.types.Operator):


 class DuplicateMoveLinkedAggregateMacro(bpy.types.Macro):
+    bl_description = "Create and move a new linked aggregate"
    bl_idname = "bim.object_duplicate_move_linked_aggregate_macro"
-    bl_label = "IFC Duplicate Linked Aggregate"
+    bl_label = "IFC Duplicate and Move Linked Aggregate"
    bl_options = {"REGISTER", "UNDO"}


 class DuplicateMoveLinkedAggregate(bpy.types.Operator):
    bl_idname = "bim.object_duplicate_move_linked_aggregate"
-    bl_label = "IFC Duplicate Linked Aggregate"
+    bl_label = "IFC Duplicate and Move Linked Aggregate"
    bl_options = {"REGISTER", "UNDO"}
    is_interactive: bpy.props.BoolProperty(name="Is Interactive", default=True)

@@ -936,7 +1006,7 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
        return DuplicateMoveLinkedAggregate.execute_ifc_duplicate_linked_aggregate_operator(self, context)

    @staticmethod
-    def execute_ifc_duplicate_linked_aggregate_operator(self, context):
+    def execute_ifc_duplicate_linked_aggregate_operator(self, context, location_from_3d_cursor=False):
        self.new_active_obj = None
        self.group_name = "BBIM_Linked_Aggregate"
        self.pset_name = "BBIM_Linked_Aggregate"
@@ -948,17 +1018,38 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
            obj.select_set(True)
            parts = ifcopenshell.util.element.get_parts(element)
            if parts:
-                index = 0
+                index = get_max_index(parts)
+                add_linked_aggregate_pset(element, index)
+                index += 1
                for part in parts:
                    if part.is_a("IfcElementAssembly"):
                        select_objects_and_add_data(part)
-
-                    add_linked_aggregate_pset(part, index)
-                    index += 1
+                    else:
+                        index = add_linked_aggregate_pset(part, index)
+                        # index += 1

                    obj = tool.Ifc.get_object(part)
                    obj.select_set(True)

+        def add_linked_aggregate_pset(part, index):
+            pset = ifcopenshell.util.element.get_pset(part, self.pset_name)
+
+            if not pset:
+                pset = ifcopenshell.api.run("pset.add_pset", tool.Ifc.get(), product=part, name=self.pset_name)
+
+                ifcopenshell.api.run(
+                    "pset.edit_pset",
+                    tool.Ifc.get(),
+                    pset=pset,
+                    properties={"Index": index},
+                )
+
+                index += 1
+            else:
+                pass
+
+            return index
+
        def add_linked_aggregate_group(element):
            linked_aggregate_group = None
            product_groups_name = [
@@ -969,25 +1060,74 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
            if self.group_name in product_groups_name:
                return

-            linked_aggregate_group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), Name=self.group_name)
+            linked_aggregate_group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), name=self.group_name)
            ifcopenshell.api.run("group.assign_group", tool.Ifc.get(), products=[element], group=linked_aggregate_group)

-        def add_linked_aggregate_pset(part, index):
-            pset = ifcopenshell.util.element.get_pset(part, self.pset_name)
+        def custom_incremental_naming_for_element_assembly(old_to_new):
+            for new in old_to_new.values():
+                if new[0].is_a("IfcElementAssembly"):
+                    group_elements = [
+                        r.RelatedObjects
+                        for r in getattr(new[0], "HasAssignments", []) or []
+                        if r.is_a("IfcRelAssignsToGroup")
+                        if "BBIM_Linked_Aggregate" in r.RelatingGroup.Name
+                    ][0]

-            if not pset:
-                pset = ifcopenshell.api.run("pset.add_pset", tool.Ifc.get(), product=part, name=self.pset_name)
+                    number = len(group_elements) - 1
+                    number = f"{number:02d}"
+                    new_obj = tool.Ifc.get_object(new[0])
+                    pattern1 = r"_\d"
+                    if re.findall(pattern1, new_obj.name):
+                        split_name = new_obj.name.split("_")
+                        new_obj.name = split_name[0] + "_" + number
+                        continue
+                    pattern2 = r"\.\d{3}"
+                    if re.findall(pattern2, new_obj.name):
+                        split_name = new_obj.name.split(".")
+                        new_obj.name = split_name[0] + "_" + number
+
+        def get_max_index(parts):
+            psets = [ifcopenshell.util.element.get_pset(p, "BBIM_Linked_Aggregate") for p in parts]
+            index = [i["Index"] for i in psets if i]
+            if len(index) > 0:
+                index = max(index)
+                return index
            else:
-                pset = tool.Ifc.get().by_id(pset["id"])
+                return 0

-            ifcopenshell.api.run(
-                "pset.edit_pset",
-                tool.Ifc.get(),
-                pset=pset,
-                properties={"Index": index},
-            )
+        def copy_linked_aggregate_data(old_to_new):
+            for old, new in old_to_new.items():
+                pset = ifcopenshell.util.element.get_pset(old, "BBIM_Linked_Aggregate")
+                if pset:
+                    new_pset = ifcopenshell.api.run(
+                        "pset.add_pset", tool.Ifc.get(), product=new[0], name=self.pset_name
+                    )
+
+                    ifcopenshell.api.run(
+                        "pset.edit_pset",
+                        tool.Ifc.get(),
+                        pset=new_pset,
+                        properties={"Index": pset["Index"]},
+                    )
+
+                if new[0].is_a("IfcElementAssembly"):
+                    linked_aggregate_group = [
+                        r.RelatingGroup
+                        for r in getattr(old, "HasAssignments", []) or []
+                        if r.is_a("IfcRelAssignsToGroup")
+                        if "BBIM_Linked_Aggregate" in r.RelatingGroup.Name
+                    ]
+                    tool.Ifc.run("group.assign_group", group=linked_aggregate_group[0], products=new)
+
+        def get_location_from_3d_cursor(old_to_new, aggregate):
+            base_obj = tool.Ifc.get_object(aggregate)
+            base_obj_location = base_obj.location.copy()
+
+            for new in old_to_new.values():
+                new_obj = tool.Ifc.get_object(new[0])
+                location_diff = new_obj.location - base_obj_location
+                new_obj.location = context.scene.cursor.location + location_diff

-            return index

        if len(context.selected_objects) != 1:
            return {"FINISHED"}
@@ -1009,16 +1149,35 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):

        old_to_new = OverrideDuplicateMove.execute_ifc_duplicate_operator(self, context, linked=True)

-        # Recreate aggregate relationship
-        for old in old_to_new.keys():
-            if old.is_a("IfcElementAssembly"):
-                tool.Root.recreate_aggregate(old_to_new)
+        tool.Root.recreate_aggregate(old_to_new)
+
+        copy_linked_aggregate_data(old_to_new)
+
+        custom_incremental_naming_for_element_assembly(old_to_new)
+
+        if location_from_3d_cursor:
+            get_location_from_3d_cursor(old_to_new, selected_element)

        blenderbim.bim.handler.refresh_ui_data()

        return old_to_new


+class DuplicateLinkedAggregateTo3dCursor(bpy.types.Operator):
+    bl_idname = "bim.duplicate_linked_aggregate_to_3d_cursor"
+    bl_label = "IFC Duplicate Linked Aggregate to 3d Cursor"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return len(context.selected_objects) > 0
+
+    def execute(self, context):
+        return OverrideDuplicateMove.execute_duplicate_operator(self, context, linked=False)
+
+    def _execute(self, context):
+        return DuplicateMoveLinkedAggregate.execute_ifc_duplicate_linked_aggregate_operator(self, context, location_from_3d_cursor=True)
+
 class RefreshLinkedAggregate(bpy.types.Operator):
    bl_idname = "bim.refresh_linked_aggregate"
    bl_label = "IFC Refresh Linked Aggregate"
@@ -1042,6 +1201,7 @@ class RefreshLinkedAggregate(bpy.types.Operator):
        self.pset_name = "BBIM_Linked_Aggregate"
        refresh_start_time = time()
        old_to_new = {}
+        original_names = {}

        def delete_objects(element):
            parts = ifcopenshell.util.element.get_parts(element)
@@ -1054,6 +1214,61 @@ class RefreshLinkedAggregate(bpy.types.Operator):

            tool.Geometry.delete_ifc_object(tool.Ifc.get_object(element))

+        def get_original_names(element):
+            group = [
+                r.RelatingGroup
+                for r in getattr(element, "HasAssignments", []) or []
+                if r.is_a("IfcRelAssignsToGroup")
+                if self.group_name in r.RelatingGroup.Name
+            ][0].id()
+            original_names[group] = {}
+
+            pset = ifcopenshell.util.element.get_pset(element, self.pset_name)
+            index = pset["Index"]
+            original_names[group][index] = tool.Ifc.get_object(element).name
+
+            parts = ifcopenshell.util.element.get_parts(element)
+            if parts:
+                for part in parts:
+                    if part.is_a("IfcElementAssembly"):
+                        original_names | get_original_names(part)
+                    else:
+                        try:
+                            pset = ifcopenshell.util.element.get_pset(part, self.pset_name)
+                        except:
+                            continue
+                        index = pset["Index"]
+                        original_names[group][index] = tool.Ifc.get_object(part).name
+
+            return original_names
+
+        def set_original_name(obj, original_names):
+            element = tool.Ifc.get_entity(obj)
+            aggregate = ifcopenshell.util.element.get_aggregate(element)
+            if ifcopenshell.util.element.get_parts(
+                element
+            ):  # if element has parts it means it is the base of and aggregate or sub-aggregate
+                aggregate = element
+
+            group = [
+                r.RelatingGroup
+                for r in getattr(aggregate, "HasAssignments", []) or []
+                if r.is_a("IfcRelAssignsToGroup")
+                if self.group_name in r.RelatingGroup.Name
+            ]
+            if not group:
+                return
+
+            group = group[0].id()
+
+            pset = ifcopenshell.util.element.get_pset(element, self.pset_name)
+            index = pset["Index"]
+
+            try:
+                obj.name = original_names[group][index]
+            except:
+                return
+
        def get_element_assembly(element):
            if element.is_a("IfcElementAssembly"):
                return element
@@ -1095,6 +1310,22 @@ class RefreshLinkedAggregate(bpy.types.Operator):

            return list(set(linked_aggregate_groups)), selected_parents

+        def get_original_matrix(element, base_instance):
+            selected_obj = tool.Ifc.get_object(base_instance)
+            selected_matrix = selected_obj.matrix_world
+            object_duplicate = tool.Ifc.get_object(element)
+            duplicate_matrix = object_duplicate.matrix_world.decompose()
+
+            return selected_matrix, duplicate_matrix
+
+        def set_new_matrix(selected_matrix, duplicate_matrix, old_to_new):
+            for old, new in old_to_new.items():
+                new_obj = tool.Ifc.get_object(new[0])
+                new_base_matrix = Matrix.LocRotScale(*duplicate_matrix)
+                matrix_diff = Matrix.inverted(selected_matrix) @ new_obj.matrix_world
+                new_obj_matrix = new_base_matrix @ matrix_diff
+                new_obj.matrix_world = new_obj_matrix
+
        active_element = tool.Ifc.get_entity(context.active_object)
        if not active_element:
            self.report({"INFO"}, "Object has no Ifc metadata.")
@@ -1134,10 +1365,9 @@ class RefreshLinkedAggregate(bpy.types.Operator):

                element_aggregate = ifcopenshell.util.element.get_aggregate(element)

-                selected_obj = tool.Ifc.get_object(base_instance)
-                selected_matrix = selected_obj.matrix_world
-                object_duplicate = tool.Ifc.get_object(element)
-                duplicate_matrix = object_duplicate.matrix_world.decompose()
+                selected_matrix, duplicate_matrix = get_original_matrix(element, base_instance)
+
+                original_names = get_original_names(element)

                delete_objects(element)

@@ -1147,13 +1377,10 @@ class RefreshLinkedAggregate(bpy.types.Operator):
                tool.Ifc.get_object(base_instance).select_set(True)

                old_to_new = DuplicateMoveLinkedAggregate.execute_ifc_duplicate_linked_aggregate_operator(self, context)
-                for old, new in old_to_new.items():
-                    new_obj = tool.Ifc.get_object(new[0])
-                    new_base_matrix = Matrix.LocRotScale(*duplicate_matrix)
-                    matrix_diff = Matrix.inverted(selected_matrix) @ new_obj.matrix_world
-                    new_obj_matrix = new_base_matrix @ matrix_diff
-                    new_obj.matrix_world = new_obj_matrix

+                set_new_matrix(selected_matrix, duplicate_matrix, old_to_new)
+
+                for old, new in old_to_new.items():
                    if element_aggregate and new[0].is_a("IfcElementAssembly"):
                        new_aggregate = ifcopenshell.util.element.get_aggregate(new[0])

@@ -1166,6 +1393,10 @@ class RefreshLinkedAggregate(bpy.types.Operator):
                                related_obj=tool.Ifc.get_object(new[0]),
                            )

+                for old, new in old_to_new.items():
+                    new_obj = tool.Ifc.get_object(new[0])
+                    set_original_name(new_obj, original_names)
+
        blenderbim.bim.handler.refresh_ui_data()

        operator_time = time() - refresh_start_time
@@ -1198,18 +1429,23 @@ class OverrideJoin(bpy.types.Operator, Operator):
        return self.join_blender_obj()

    def join_ifc_obj(self):
-        representation = tool.Ifc.get().by_id(self.target.data.BIMMeshProperties.ifc_definition_id)
+        ifc_file = tool.Ifc.get()
+        builder = ShapeBuilder(ifc_file)
+        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
+        representation = ifc_file.by_id(self.target.data.BIMMeshProperties.ifc_definition_id)
        if representation.RepresentationType in ("Tessellation", "Brep"):
            for obj in bpy.context.selected_objects:
                if obj == self.target:
                    continue
                element = tool.Ifc.get_entity(obj)
                if element:
-                    ifcopenshell.api.run("root.remove_product", tool.Ifc.get(), product=element)
+                    ifcopenshell.api.run("root.remove_product", ifc_file, product=element)
            bpy.ops.object.join()
            bpy.ops.bim.update_representation(obj=self.target.name, ifc_representation_class="")
        elif representation.RepresentationType == "SweptSolid":
            target_placement = np.array(self.target.matrix_world)
+            target_placement[:, 3][:3] /= si_conversion
+
            items = list(representation.Items)
            for obj in bpy.context.selected_objects:
                if obj == self.target:
@@ -1222,31 +1458,28 @@ class OverrideJoin(bpy.types.Operator, Operator):
                    continue

                # Only objects of the same representation type can be joined
-                obj_rep = tool.Ifc.get().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
+                obj_rep = ifc_file.by_id(obj.data.BIMMeshProperties.ifc_definition_id)
                if obj_rep.RepresentationType != "SweptSolid":
                    obj.select_set(False)
                    continue

                placement = np.array(obj.matrix_world)
+                placement[:, 3][:3] /= si_conversion

                for item in obj_rep.Items:
-                    copied_item = ifcopenshell.util.element.copy_deep(tool.Ifc.get(), item)
+                    copied_item = ifcopenshell.util.element.copy_deep(ifc_file, item)
                    for style in item.StyledByItem:
-                        copied_style = ifcopenshell.util.element.copy(tool.Ifc.get(), style)
+                        copied_style = ifcopenshell.util.element.copy(ifc_file, style)
                        copied_style.Item = copied_item
                    if copied_item.Position:
                        position = ifcopenshell.util.placement.get_axis2placement(copied_item.Position)
                    else:
-                        position = np.eye(4)
+                        position = np.eye(4, dtype=float)
                    position = placement @ position
                    position = np.linalg.inv(target_placement) @ position
-                    copied_item.Position = tool.Ifc.get().createIfcAxis2Placement3D(
-                        tool.Ifc.get().createIfcCartesianPoint([float(n) for n in position[:, 3][:3]]),
-                        tool.Ifc.get().createIfcDirection([float(n) for n in position[:, 2][:3]]),
-                        tool.Ifc.get().createIfcDirection([float(n) for n in position[:, 0][:3]]),
-                    )
+                    copied_item.Position = builder.create_axis2_placement_3d_from_matrix(position)
                    items.append(copied_item)
-                ifcopenshell.api.run("root.remove_product", tool.Ifc.get(), product=element)
+                ifcopenshell.api.run("root.remove_product", ifc_file, product=element)
            representation.Items = items
            bpy.ops.object.join()
            core.switch_representation(
@@ -1277,14 +1510,13 @@ class OverridePasteBuffer(bpy.types.Operator):

    def execute(self, context):
        bpy.ops.view3d.pastebuffer()
-        if IfcStore.get_file():
-            for obj in context.selected_objects:
-                # Pasted objects may come from another Blender session, or even
-                # from the same session where the original object has since
-                # been deleted. As the source element may not exist, paste will
-                # always unlink the element. If you want to duplicate an
-                # element, use the duplicate commands.
-                tool.Root.unlink_object(obj)
+        for obj in context.selected_objects:
+            # Pasted objects may come from another Blender session, or even
+            # from the same session where the original object has since
+            # been deleted. As the source element may not exist, paste will
+            # always unlink the element. If you want to duplicate an
+            # element, use the duplicate commands.
+            tool.Root.unlink_object(obj)
        return {"FINISHED"}


@@ -1311,7 +1543,9 @@ class OverrideModeSetEdit(bpy.types.Operator):
        for obj in selected_objs:
            if not obj:
                continue
-            if not obj.data:
+            obj_supports_edit_mode, message = tool.Blender.object_supports_edit_mode(obj)
+            if not obj_supports_edit_mode:
+                self.report({"INFO"}, message)
                obj.select_set(False)
                continue
            element = tool.Ifc.get_entity(obj)
@@ -1455,20 +1689,11 @@ class OverrideModeSetObject(bpy.types.Operator):
            apply_openings=True,
        )

-    def draw(self, context):
-        if self.is_valid:
-            row = self.layout.row()
-            row.prop(self, "should_save")
-        else:
-            row = self.layout.row()
-            row.label(text="No Geometry Found: Object will revert to previous state.")
-
    def invoke(self, context, event):
        return IfcStore.execute_ifc_operator(self, context, is_invoke=True)

    def _invoke(self, context, event):
        self.is_valid = True
-        self.should_save = True

        bpy.ops.object.mode_set(mode="EDIT", toggle=True)

@@ -1530,8 +1755,6 @@ class OverrideModeSetObject(bpy.types.Operator):
                else:
                    tool.Ifc.finish_edit(obj)

-        if self.edited_objs:
-            return context.window_manager.invoke_props_dialog(self)
        return self.execute(context)


@@ -1590,6 +1813,16 @@ class EnableEditingRepresentationItems(bpy.types.Operator, Operator):
                                    new.surface_style = style.Name or "Unnamed"
                        elif inverse.is_a("IfcPresentationLayerAssignment"):
                            new.layer = inverse.Name or "Unnamed"
+                        elif inverse.is_a("IfcShapeRepresentation"):
+                            if inverse.OfShapeAspect:
+                                shape_aspect = inverse.OfShapeAspect[0]
+                                new.shape_aspect = shape_aspect.Name
+                                new.shape_aspect_id = shape_aspect.id()
+
+            # sort created items
+            sorted_items = sorted(props.items[:], key=lambda i: (not i.shape_aspect, i.shape_aspect))
+            for i, item in enumerate(sorted_items[:-1]):  # last item is sorted automatically
+                props.items.move(props.items[:].index(item), i)


 class DisableEditingRepresentationItems(bpy.types.Operator, Operator):
@@ -1600,3 +1833,270 @@ class DisableEditingRepresentationItems(bpy.types.Operator, Operator):
    def _execute(self, context):
        obj = context.active_object
        obj.BIMGeometryProperties.is_editing = False
+
+
+class RemoveRepresentationItem(bpy.types.Operator, Operator):
+    bl_idname = "bim.remove_representation_item"
+    bl_label = "Remove Representation Item"
+    bl_options = {"REGISTER", "UNDO"}
+
+    representation_item_id: bpy.props.IntProperty()
+
+    @classmethod
+    def poll(cls, context):
+        if context.active_object is None or len(context.active_object.BIMGeometryProperties.items) <= 1:
+            cls.poll_message_set(
+                "Active object need to have more than 1 representation items to keep representation valid"
+            )
+            return False
+        return True
+
+    def _execute(self, context):
+        obj = context.active_object
+        props = obj.BIMGeometryProperties
+        ifc_file = tool.Ifc.get()
+
+        representation_item = ifc_file.by_id(self.representation_item_id)
+        tool.Geometry.remove_representation_item(representation_item)
+        tool.Geometry.reload_representation(obj)
+
+        # reload items ui
+        bpy.ops.bim.disable_editing_representation_items()
+        bpy.ops.bim.enable_editing_representation_items()
+
+
+def poll_editing_representaiton_item_style(cls, context):
+    if not (obj := getattr(context, "active_object", None)):
+        return False
+    props = obj.BIMGeometryProperties
+    if not props.is_editing:
+        return False
+    if not 0 <= props.active_item_index < len(props.items):
+        return False
+    item = props.items[props.active_item_index]
+    shape_aspect = item.shape_aspect
+    if shape_aspect == "":
+        return True
+
+    from blenderbim.bim.module.material.data import ObjectMaterialData
+
+    if not ObjectMaterialData.is_loaded:
+        ObjectMaterialData.load()
+    constituents = ObjectMaterialData.data["active_material_constituents"]
+    if any(c for c in constituents if c == shape_aspect):
+        cls.poll_message_set(
+            "Style comes from item's shape aspect related to the material constituent "
+            "with the same name and cannot be edited on representation item directly - "
+            "you can change it from the material constituent"
+        )
+        return False
+    return True
+
+
+class EnableEditingRepresentationItemStyle(bpy.types.Operator, Operator):
+    bl_idname = "bim.enable_editing_representation_item_style"
+    bl_label = "Enable Editing Representation Item Style"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return poll_editing_representaiton_item_style(cls, context)
+
+    def _execute(self, context):
+        props = context.active_object.BIMGeometryProperties
+        props.is_editing_item_style = True
+        ifc_file = tool.Ifc.get()
+
+        # set dropdown to currently active style
+        representation_item_id = props.items[props.active_item_index].ifc_definition_id
+        representation_item = ifc_file.by_id(representation_item_id)
+        style = tool.Style.get_representation_item_style(representation_item)
+        if style:
+            props.representation_item_style = str(style.id())
+
+
+class EditRepresentationItemStyle(bpy.types.Operator, Operator):
+    bl_idname = "bim.edit_representation_item_style"
+    bl_label = "Edit Representation Item Style"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        obj = context.active_object
+        props = obj.BIMGeometryProperties
+        props.is_editing_item_style = False
+        ifc_file = tool.Ifc.get()
+
+        surface_style = ifc_file.by_id(int(props.representation_item_style))
+        representation_item_id = props.items[props.active_item_index].ifc_definition_id
+        representation_item = ifc_file.by_id(representation_item_id)
+
+        tool.Style.assign_style_to_representation_item(representation_item, surface_style)
+        tool.Geometry.reload_representation(obj)
+        # reload items ui
+        bpy.ops.bim.disable_editing_representation_items()
+        bpy.ops.bim.enable_editing_representation_items()
+
+
+class DisableEditingRepresentationItemStyle(bpy.types.Operator, Operator):
+    bl_idname = "bim.disable_editing_representation_item_style"
+    bl_label = "Disable Editing Representation Item Style"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.active_object.BIMGeometryProperties
+        props.is_editing_item_style = False
+
+
+class UnassignRepresentationItemStyle(bpy.types.Operator, Operator):
+    bl_idname = "bim.unassign_representation_item_style"
+    bl_label = "Unassign Representation Item Style"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return poll_editing_representaiton_item_style(cls, context)
+
+    def _execute(self, context):
+        obj = context.active_object
+        props = obj.BIMGeometryProperties
+        props.is_editing_item_style = False
+
+        # get active representation item
+        representation_item_id = props.items[props.active_item_index].ifc_definition_id
+        representation_item = tool.Ifc.get_entity_by_id(representation_item_id)
+        if not representation_item:
+            self.report({"ERROR"}, f"Couldn't find representation item by id {representation_item_id}.")
+            return {"CANCELLED"}
+
+        tool.Style.assign_style_to_representation_item(representation_item, None)
+        tool.Geometry.reload_representation(obj)
+        # reload items ui
+        bpy.ops.bim.disable_editing_representation_items()
+        bpy.ops.bim.enable_editing_representation_items()
+
+
+class EnableEditingRepresentationItemShapeAspect(bpy.types.Operator, Operator):
+    bl_idname = "bim.enable_editing_representation_item_shape_aspect"
+    bl_label = "Enable Editing Representation Item Shape Aspect"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.active_object.BIMGeometryProperties
+        props.is_editing_item_shape_aspect = True
+
+        # set dropdown to currently active shape aspect
+        shape_aspect_id = props.items[props.active_item_index].shape_aspect_id
+        if shape_aspect_id != 0:
+            props.representation_item_shape_aspect = str(shape_aspect_id)
+
+
+class EditRepresentationItemShapeAspect(bpy.types.Operator, Operator):
+    bl_idname = "bim.edit_representation_item_shape_aspect"
+    bl_label = "Edit Representation Item Shape Aspect"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        obj = context.active_object
+        element = tool.Ifc.get_entity(obj)
+        props = obj.BIMGeometryProperties
+        props.is_editing_item_shape_aspect = False
+        ifc_file = tool.Ifc.get()
+
+        representation_item_id = props.items[props.active_item_index].ifc_definition_id
+        representation_item = ifc_file.by_id(representation_item_id)
+
+        if props.representation_item_shape_aspect == "NEW":
+            active_representation = tool.Geometry.get_active_representation(obj)
+            # find IfcProductRepresentationSelect based on current representation
+            if hasattr(element, "Representation"):  # IfcProduct
+                product_shape = element.Representation
+            else:  # IfcTypeProduct
+                for representation_map in element.RepresentationMaps:
+                    if representation_map.MappedRepresentation == active_representation:
+                        product_shape = representation_map
+            previous_shape_aspect_id = props.items[props.active_item_index].shape_aspect_id
+            # will be None if item didn't had a shape aspect
+            previous_shape_aspect = tool.Ifc.get_entity_by_id(previous_shape_aspect_id)
+            shape_aspect = tool.Geometry.create_shape_aspect(
+                product_shape, active_representation, [representation_item], previous_shape_aspect
+            )
+        else:
+            shape_aspect = ifc_file.by_id(int(props.representation_item_shape_aspect))
+            tool.Geometry.add_representation_item_to_shape_aspect([representation_item], shape_aspect)
+
+        # set attributes from UI
+        shape_aspect_attrs = props.shape_aspect_attrs
+        shape_aspect.Name = shape_aspect_attrs.name
+        shape_aspect.Description = shape_aspect_attrs.description
+
+        shape_aspect_representation = tool.Geometry.get_shape_aspect_representation_for_item(
+            shape_aspect, representation_item
+        )
+        styles = tool.Geometry.get_shape_aspect_styles(element, shape_aspect, representation_item)
+        tool.Ifc.run(
+            "style.assign_representation_styles",
+            shape_representation=shape_aspect_representation,
+            styles=styles,
+        )
+        tool.Geometry.get_shape_aspect_styles(element, shape_aspect, representation_item)
+        tool.Geometry.reload_representation(obj)
+
+        # reload items ui
+        bpy.ops.bim.disable_editing_representation_items()
+        bpy.ops.bim.enable_editing_representation_items()
+
+
+class DisableEditingRepresentationItemShapeAspect(bpy.types.Operator, Operator):
+    bl_idname = "bim.disable_editing_representation_item_shape_aspect"
+    bl_label = "Disable Editing Representation Item Shape Aspect"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.active_object.BIMGeometryProperties
+        props.is_editing_item_shape_aspect = False
+
+
+class RemoveRepresentationItemFromShapeAspect(bpy.types.Operator, Operator):
+    bl_idname = "bim.remove_representation_item_from_shape_aspect"
+    bl_label = "Remove Representation Item From Shape Aspect"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        obj = context.active_object
+        element = tool.Ifc.get_entity(obj)
+        props = obj.BIMGeometryProperties
+        ifc_file = tool.Ifc.get()
+
+        representation_item_id = props.items[props.active_item_index].ifc_definition_id
+        representation_item = ifc_file.by_id(representation_item_id)
+        shape_aspect = ifc_file.by_id(props.items[props.active_item_index].shape_aspect_id)
+
+        # unassign items before removing items as removing items
+        # might remove shape aspect
+        if representation_item.StyledByItem:
+            styles = tool.Geometry.get_shape_aspect_styles(element, shape_aspect, representation_item)
+            self.remove_styles_from_item(representation_item, styles)
+            tool.Geometry.reload_representation(obj)
+
+        tool.Geometry.remove_representation_items_from_shape_aspect([representation_item], shape_aspect)
+
+        # reload items ui
+        bpy.ops.bim.disable_editing_representation_items()
+        bpy.ops.bim.enable_editing_representation_items()
+
+    def remove_styles_from_item(self, representation_item, styles):
+        ifc_file = tool.Ifc.get()
+        styled_item = representation_item.StyledByItem[0]
+        new_styles = [s for s in styled_item.Styles if s not in styles]
+        styled_item.Styles = new_styles
+
+        for style_ in new_styles:
+            if style_.is_a("IfcPresentationStyleAssignment"):
+                new_assignment_styles = [s for s in styled_item.Styles if s not in styles]
+                if not new_assignment_styles:
+                    ifc_file.remove(style_)
+                else:
+                    style_.Styles = new_assignment_styles
+
+        if not styled_item.Styles:
+            ifc_file.remove(styled_item)
@@ -17,6 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.

 import bpy
+import blenderbim.tool as tool
 from blenderbim.bim.prop import StrProperty, Attribute
 from blenderbim.bim.module.geometry.data import RepresentationsData
 from bpy.types import PropertyGroup
@@ -47,11 +48,63 @@ def update_mode(self, context):
        bpy.ops.bim.override_mode_set_edit("INVOKE_DEFAULT")


+def get_styles(self, context):
+    # postponed import to avoid circular import
+    from blenderbim.bim.module.material.data import MaterialsData
+
+    if not MaterialsData.is_loaded:
+        MaterialsData.load()
+    return MaterialsData.data["styles"]
+
+
+def get_shape_aspects(self, context):
+    if not RepresentationsData.is_loaded:
+        RepresentationsData.load()
+    return RepresentationsData.data["shape_aspects"]
+
+
+def get_material_constituents(self, context, edit_text):
+    from blenderbim.bim.module.material.data import ObjectMaterialData
+
+    if not ObjectMaterialData.is_loaded:
+        ObjectMaterialData.load()
+    return ObjectMaterialData.data["active_material_constituents"]
+
+
+def update_shape_aspect(self, context):
+    shape_aspect_id = self.representation_item_shape_aspect
+    attrs = self.shape_aspect_attrs
+
+    if shape_aspect_id == "NEW":  # new shape aspect
+        attrs.name = tool.Blender.get_blender_prop_default_value(attrs, "name")
+        attrs.description = tool.Blender.get_blender_prop_default_value(attrs, "description")
+    else:
+        shape_aspect = tool.Ifc.get().by_id(int(shape_aspect_id))
+        attrs.name = shape_aspect.Name or ""
+        attrs.description = shape_aspect.Description or ""
+
+
 class RepresentationItem(PropertyGroup):
    name: StringProperty(name="Name")
    surface_style: StringProperty(name="Surface Style")
    layer: StringProperty(name="Layer")
    ifc_definition_id: IntProperty(name="IFC Definition ID")
+    shape_aspect: StringProperty(name="Shape Aspect")
+    shape_aspect_id: IntProperty(name="Shape Aspect IFC ID")
+
+
+class ShapeAspect(PropertyGroup):
+    name: StringProperty(
+        name="Name",
+        description=(
+            "Note that IfcMaterialConstituent is applied based on shape aspects using the same name as material constituent.\n"
+            "In dropdown suggestions you can see names of existing material constituents."
+        ),
+        **({} if bpy.app.version < (3, 3, 0) else {"search": get_material_constituents}),
+    )
+    description: StringProperty(
+        name="Description",
+    )


 class BIMObjectGeometryProperties(PropertyGroup):
@@ -59,6 +112,13 @@ class BIMObjectGeometryProperties(PropertyGroup):
    is_editing: BoolProperty(name="Is Editing", default=False)
    items: CollectionProperty(name="Representation Items", type=RepresentationItem)
    active_item_index: IntProperty(name="Active Representation Item Index")
+    is_editing_item_style: BoolProperty(name="Is Editing Item's Style", default=False)
+    representation_item_style: EnumProperty(items=get_styles, name="Representation Item Style")
+    is_editing_item_shape_aspect: BoolProperty(name="Is Editing Item's Shape Aspect", default=False)
+    representation_item_shape_aspect: EnumProperty(
+        items=get_shape_aspects, name="Representation Item Shape Aspect", update=update_shape_aspect
+    )
+    shape_aspect_attrs: PointerProperty(type=ShapeAspect)


 class BIMGeometryProperties(PropertyGroup):
@@ -78,3 +138,4 @@ class BIMGeometryProperties(PropertyGroup):
        name="IFC Interaction Mode",
        update=update_mode,
    )
+    representation_from_object: PointerProperty(type=bpy.types.Object)
@@ -29,10 +29,13 @@ from blenderbim.bim.module.geometry.data import (
    PlacementData,
    DerivedCoordinatesData,
 )
+from blenderbim.bim.module.layer.data import LayersData


 def mode_menu(self, context):
    row = self.layout.row(align=True)
+    if context.scene.BIMGeometryProperties.mode == "EDIT":
+        row.operator("bim.override_mode_set_object", icon="CANCEL", text="Discard Changes").should_save = False
    row.prop(context.scene.BIMGeometryProperties, "mode", text="", icon_value=blenderbim.bim.icons["IFC"].icon_id)


@@ -133,6 +136,7 @@ class BIM_PT_representations(Panel):

        if not RepresentationsData.data["representations"]:
            layout.label(text="No Representations Found")
+            return

        for representation in RepresentationsData.data["representations"]:
            row = self.layout.row(align=True)
@@ -150,6 +154,18 @@ class BIM_PT_representations(Panel):
            op.ifc_definition_id = representation["id"]
            op.disable_opening_subtractions = False
            row.operator("bim.remove_representation", icon="X", text="").representation_id = representation["id"]
+            if representation["is_active"]:
+                active_representation = representation
+
+        layout.separator()
+        if not LayersData.is_loaded:
+            LayersData.load()
+        if LayersData.data["active_layers"]:
+            layout.label(text="Representation Presentation Layers:")
+            for layer_name in LayersData.data["active_layers"].values():
+                layout.label(text=layer_name, icon="STICKY_UVS_LOC")
+        else:
+            layout.label(text="Representation Has No Presentation Layers", icon="STICKY_UVS_LOC")


 class BIM_PT_representation_items(Panel):
@@ -187,20 +203,47 @@ class BIM_PT_representation_items(Panel):
        self.layout.template_list("BIM_UL_representation_items", "", props, "items", props, "active_item_index")

        item_is_active = props.active_item_index < len(props.items)
-        if item_is_active:
-            surface_style = props.items[props.active_item_index].surface_style
-            presentation_layer = props.items[props.active_item_index].layer
+        if not item_is_active:
+            return
+
+        active_item = props.items[props.active_item_index]
+        surface_style = active_item.surface_style
+        shape_aspect = active_item.shape_aspect
+
+        row = self.layout.row(align=True)
+        if props.is_editing_item_style:
+            # NOTE: we currently support 1 item having just 1 style
+            # when IfcStyledItem can actually have multiple styles
+            prop_with_search(row, props, "representation_item_style", icon="SHADING_RENDERED", text="")
+            row.operator("bim.edit_representation_item_style", icon="CHECKMARK", text="")
+            row.operator("bim.disable_editing_representation_item_style", icon="CANCEL", text="")
        else:
-            surface_style, presentation_layer = None, None
+            if surface_style:
+                row.label(text=surface_style, icon="SHADING_RENDERED")
+            else:
+                row.label(text="No Surface Style", icon="MESH_UVSPHERE")
+            row.operator("bim.enable_editing_representation_item_style", icon="GREASEPENCIL", text="")
+            if surface_style:
+                row.operator("bim.unassign_representation_item_style", icon="X", text="")

        row = self.layout.row()
-        if surface_style:
-            row.label(text=surface_style, icon="SHADING_RENDERED")
-        else:
-            row.label(text="No Surface Style", icon="MESH_UVSPHERE")
+        row.label(text=active_item.layer or "No Presentation Layer", icon="STICKY_UVS_LOC")

-        row = self.layout.row()
-        row.label(text=presentation_layer or "No Presentation Layer", icon="STICKY_UVS_LOC")
+        row = self.layout.row(align=True)
+        if props.is_editing_item_shape_aspect:
+            row.prop(props, "representation_item_shape_aspect", icon="SHAPEKEY_DATA", text="")
+            row.operator("bim.edit_representation_item_shape_aspect", icon="CHECKMARK", text="")
+            row.operator("bim.disable_editing_representation_item_shape_aspect", icon="CANCEL", text="")
+
+            shape_aspect_attrs = props.shape_aspect_attrs
+            self.layout.label(text="Shape Aspect Attributes:")
+            self.layout.prop(shape_aspect_attrs, "name")
+            self.layout.prop(shape_aspect_attrs, "description")
+        else:
+            row.label(text=shape_aspect or "No Shape Aspect", icon="SHAPEKEY_DATA")
+            row.operator("bim.enable_editing_representation_item_shape_aspect", icon="GREASEPENCIL", text="")
+            if shape_aspect:
+                row.operator("bim.remove_representation_item_from_shape_aspect", icon="X", text="")


 class BIM_PT_connections(Panel):
@@ -466,6 +509,11 @@ class BIM_UL_representation_items(UIList):
        if item:
            icon = "MATERIAL" if item.surface_style else "MESH_UVSPHERE"
            row = layout.row(align=True)
-            row.label(text=item.name, icon=icon)
+            item_name = item.name
+            if item.shape_aspect:
+                item_name = f"{item.shape_aspect} {item_name}"
+            row.label(text=item_name, icon=icon)
            if item.layer:
                row.label(text="", icon="STICKY_UVS_LOC")
+            op = row.operator("bim.remove_representation_item", icon="X", text="")
+            op.representation_item_id = item.ifc_definition_id
@@ -212,7 +212,7 @@ class UnassignGroup(bpy.types.Operator, tool.Ifc.Operator):
                "group.unassign_group",
                self.file,
                **{
-                    "product": self.file.by_id(product.BIMObjectProperties.ifc_definition_id),
+                    "products": [self.file.by_id(product.BIMObjectProperties.ifc_definition_id)],
                    "group": self.file.by_id(self.group),
                }
            )
@@ -247,9 +247,11 @@ class IFCGIT_PT_revision_inspector(bpy.types.Panel):
    bl_idname = "IFCGIT_PT_revision_inspector"
    bl_label = "Git History"
    bl_options = {"DEFAULT_CLOSED"}
-    bl_space_type = "VIEW_3D"
-    bl_region_type = "UI"
-    bl_category = "BlenderBIM"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_parent_id = "IFCGIT_PT_panel"

    def draw(self, context):

--- a/Show More
+++ b/Show More