Setup builds for IfcSverchok

Whoops
Update deprecated set-output Github command
2026-08-06 16:01:36 +00:00 · 2024-06-11 15:41:18 +10:00 · 2024-06-11 14:59:29 +10:00 · 2024-06-11 14:48:37 +10:00 · 2024-06-11 14:42:22 +10:00 · 2024-06-11 14:11:40 +10:00
825 changed files with 35590 additions and 28812 deletions
@@ -1,4 +1,4 @@
-name: Publish-blenderbim-multiplatform
+name: ci-blenderbim-daily

 on:
  push:
@@ -16,12 +16,8 @@ on:
      - 'src/ifc5d/ifc5d/**'
      - 'src/ifccityjson/**'
    branches:
-      - v0.7.0
-
-env:
-  major: 0
-  minor: 0
-  name: blenderbim
+      - v0.8.0
+  workflow_dispatch:

 jobs:
  activate:
@@ -39,7 +35,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        pyver: [py39, py310, py311]
+        pyver: [py39, py310, py311, py312]
        config:
          - {
            name: "Windows Build",
@@ -63,21 +59,23 @@ jobs:
        with:
          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
          python-version: '3.11'
-      - run: echo ${{ env.DATE }}
+      - name: Get current version
+        id: version
+        run: echo "version=$(cat VERSION)" >> $GITHUB_OUTPUT
      - name: Get current date
        id: date
-        run: echo "::set-output name=date::$(date +'%y%m%d')"
+        run: echo "date=$(date +'%y%m%d')" >> $GITHUB_OUTPUT
      - name: Compile
        run: |
          cp -r src/blenderbim src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
          cd src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
          make dist PLATFORM=${{ matrix.config.short_name }} PYVERSION=${{ matrix.pyver }}
-      - name: Upload Zip file to release
+      - name: Upload zip file to release
        uses: svenstaro/upload-release-action@v2
        with:
          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }}/dist/blenderbim-${{steps.date.outputs.date}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
-          asset_name: blenderbim-${{steps.date.outputs.date}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
-          tag: "blenderbim-${{steps.date.outputs.date}}"
+          file: src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }}/dist/blenderbim-${{steps.version.outputs.version}}.${{steps.date.outputs.date}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
+          asset_name: blenderbim-${{steps.version.outputs.version}}.${{steps.date.outputs.date}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
+          release_name: "blenderbim-${{steps.version.outputs.version}}.${{steps.date.outputs.date}} (unstable)"
+          tag: "blenderbim-${{steps.version.outputs.version}}.${{steps.date.outputs.date}}"
          overwrite: true
-          body: "Daily developer testing build blenderbim-${{steps.date.outputs.date}}"
@@ -0,0 +1,62 @@
+name: ci-blenderbim
+
+on:
+  workflow_dispatch:
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    name: ${{ matrix.config.name }}-${{ matrix.pyver }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        pyver: [py39, py310, py311, py312]
+        config:
+          - {
+            name: "Windows Build",
+            short_name: win,
+          }
+          - {
+            name: "Linux Build",
+            short_name: linux
+          }
+          - {
+            name: "MacOS Build",
+            short_name: macos
+          }
+          - {
+            name: "MacOS ARM Build",
+            short_name: macosm1
+          }
+    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'
+      - name: Get current version
+        id: version
+        run: echo "version=$(cat VERSION)" >> $GITHUB_OUTPUT
+      - name: Compile
+        run: |
+          cp -r src/blenderbim src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
+          cd src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
+          make dist PLATFORM=${{ matrix.config.short_name }} PYVERSION=${{ matrix.pyver }} IS_STABLE=TRUE
+      - name: Upload zip file to release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }}/dist/blenderbim-${{steps.version.outputs.version}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
+          asset_name: blenderbim-${{steps.version.outputs.version}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
+          release_name: "blenderbim-${{steps.version.outputs.version}}"
+          tag: "blenderbim-${{steps.version.outputs.version}}"
+          overwrite: true
@@ -1,7 +1,10 @@
-name: CD
+name: ci-ifcopenshell-docker

 on: 
+  workflow_dispatch:
  push:
+      tags:
+        - v0.**


 jobs:
@@ -1,19 +1,7 @@
-name: ci-ifcopenshell-pypi
+name: ci-ifcopenshell-python-pypi

 on:
  workflow_dispatch:
-  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 * *"
-  push:
-    paths:
-      - '.github/workflows/ci-ifcopenshell-pypi.yml'
-

 env:
  major: 0
@@ -40,19 +28,19 @@ jobs:
        config:
          - {
            name: "Windows Build",
-            short_name: win,
+            short_name: win64,
          }
          - {
            name: "Linux Build",
-            short_name: linux
+            short_name: linux64
          }
          - {
            name: "MacOS Build",
-            short_name: macos
+            short_name: macos64
          }
          - {
            name: "MacOS ARM Build",
-            short_name: macosm1
+            short_name: macosm164
          }
    steps:
      - uses: actions/checkout@v2
@@ -0,0 +1,63 @@
+name: ci-ifcopenshell-python
+
+on:
+  workflow_dispatch:
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    name: ${{ matrix.config.name }}-${{ matrix.pyver }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        pyver: [py39, py310, py311, py312]
+        config:
+          - {
+            name: "Windows Build",
+            short_name: win64,
+          }
+          - {
+            name: "Linux Build",
+            short_name: linux64
+          }
+          - {
+            name: "MacOS Build",
+            short_name: macos64
+          }
+          - {
+            name: "MacOS ARM Build",
+            short_name: macosm164
+          }
+    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
+          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
+      - run: echo ${{ env.DATE }}
+      - name: Get current version
+        id: version
+        run: echo "version=$(cat VERSION)" >> $GITHUB_OUTPUT
+      - name: Compile
+        run: |
+          cp -r src/ifcopenshell-python src/ifcopenshell_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
+          cd src/ifcopenshell_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
+          make zip PLATFORM=${{ matrix.config.short_name }} PYVERSION=${{ matrix.pyver }}
+      - name: Upload zip file to release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: src/ifcopenshell_${{ matrix.config.short_name }}_${{ matrix.pyver }}/dist/ifcopenshell-python-${{ steps.version.outputs.version }}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
+          asset_name: ifcopenshell-python-${{ steps.version.outputs.version }}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
+          release_name: "ifcopenshell-python-${{steps.version.outputs.version}}"
+          tag: "ifcopenshell-python-${{steps.version.outputs.version}}"
+          overwrite: true
@@ -1,17 +1,13 @@
-name: Publish-ifcsverchok
+name: ci-ifcsverchok-daily

 on:
+  workflow_dispatch:
  push:
    paths:
      - '.github/workflows/ci-ifcsverchok-build.yml'
      - 'src/ifcsverchok/*'
    branches:
-      - v0.7.0
-
-env:
-  major: 0
-  minor: 0
-  name: ifcsverchok
+      - v0.8.0

 jobs:
  activate:
@@ -34,20 +30,22 @@ jobs:
        with:
          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
          python-version: '3.11'
-      - run: echo ${{ env.DATE }}
+      - name: Get current version
+        id: version
+        run: echo "version=$(cat VERSION)" >> $GITHUB_OUTPUT
      - name: Get current date
        id: date
-        run: echo "::set-output name=date::$(date +'%y%m%d')"
+        run: echo "date=$(date +'%y%m%d')" >> $GITHUB_OUTPUT
      - name: Compile
        run: |
          cd src/ifcsverchok
          make dist
-      - name: Upload Zip file to release
+      - 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}}"
+          file: src/ifcsverchok/dist/ifcsverchok-${{steps.version.outputs.version}}.${{steps.date.outputs.date}}.zip
+          asset_name: ifcsverchok-${{steps.version.outputs.version}}.${{steps.date.outputs.date}}.zip
+          release_name: "ifcsverchok-${{steps.version.outputs.version}}.${{steps.date.outputs.date}}"
+          tag: "ifcsverchok-${{steps.version.outputs.version}}.${{steps.date.outputs.date}}"
          overwrite: true
-          body: "ifcsverchok build for ${{steps.date.outputs.date}}"
@@ -0,0 +1,42 @@
+name: ci-ifcsverchok
+
+on:
+  workflow_dispatch:
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    name: ifcsverchok
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
+        with:
+          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
+          python-version: '3.11'
+      - name: Get current version
+        id: version
+        run: echo "version=$(cat VERSION)" >> $GITHUB_OUTPUT
+      - name: Compile
+        run: |
+          cd src/ifcsverchok
+          make dist IS_STABLE=TRUE
+      - name: Upload zip file to release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: src/ifcsverchok/dist/ifcsverchok-${{steps.version.outputs.version}}.zip
+          asset_name: ifcsverchok-${{steps.version.outputs.version}}.zip
+          release_name: "ifcsverchok-${{steps.version.outputs.version}}"
+          tag: "ifcsverchok-${{steps.version.outputs.version}}"
+          overwrite: true
@@ -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

@@ -0,0 +1 @@
+0.7.9
@@ -91,6 +91,8 @@ HDF5_VERSION = "1.12.1"
 GMP_VERSION = "6.2.1"
 MPFR_VERSION = "3.1.6" # latest is 4.1.0
 CGAL_VERSION = "5.3"
+USD_VERSION = "23.05"
+TBB_VERSION = "2021.9.0"

 # binaries
 cp = "cp"
@@ -203,6 +205,7 @@ dependency_tree = {
    'cgal': (),
    'eigen': (),
    'freetype': (),
+    # 'usd': ('boost', 'oneTBB')
 }

 def v(dep):
@@ -770,7 +773,42 @@ if "cgal" in targets:
        download_tool=download_tool_git,
        revision=f"v{CGAL_VERSION}"
    )
-    
+
+if "usd" in targets:
+    build_dependency(
+        name=f"oneTBB-{TBB_VERSION}",
+        mode="cmake",
+        build_tool_args=[
+            f"-DCMAKE_INSTALL_PREFIX={DEPS_DIR}/install/tbb-{TBB_VERSION}",
+            f"-DTBB_TEST=OFF"
+        ],
+        download_url="https://github.com/oneapi-src/oneTBB",
+        download_name="oneTBB",
+        download_tool=download_tool_git,
+        revision=f"v{TBB_VERSION}"
+    )
+
+    build_dependency(
+        name=f"usd-{USD_VERSION}",
+        mode="cmake",
+        build_tool_args=[
+            f"-DCMAKE_INSTALL_PREFIX={DEPS_DIR}/install/usd-{USD_VERSION}",
+            f"-DBOOST_ROOT={DEPS_DIR}/install/boost-{BOOST_VERSION}",
+            f"-DTBB_ROOT_DIR={DEPS_DIR}/install/tbb-{TBB_VERSION}",
+            f"-DPXR_ENABLE_PYTHON_SUPPORT=FALSE",
+            f"-DPXR_ENABLE_GL_SUPPORT=FALSE",
+            f"-DPXR_BUILD_IMAGING=FALSE",
+            f"-DPXR_BUILD_TUTORIALS=FALSE",
+            f"-DPXR_BUILD_EXAMPLES=FALSE",
+            f"-DPXR_BUILD_USD_TOOLS=FALSE",
+            f"-DPXR_BUILD_TESTS=FALSE"
+        ],
+        download_url="https://github.com/PixarAnimationStudios/USD",
+        download_name="USD",
+        download_tool=download_tool_git,
+        revision=f"v{USD_VERSION}"
+    )
+
 cecho("Building IfcOpenShell:", GREEN)

 IFCOS_DIR = os.path.join(DEPS_DIR, "build", "ifcopenshell")
@@ -854,6 +892,13 @@ if "hdf5" in targets:
 else:
    cmake_args.append("-DHDF5_SUPPORT=Off")

+if "usd" in targets:
+    cmake_args.extend([
+        "-DUSD_SUPPORT="               "On",
+        "-DUSD_INCLUDE_DIR="           f"{DEPS_DIR}/install/usd-{USD_VERSION}/include",
+        "-DUSD_LIBRARY_DIR="           f"{DEPS_DIR}/install/usd-{USD_VERSION}/lib"
+    ])
+
 if not explicit_targets or {"IfcGeom", "IfcConvert", "IfcGeomServer"} & set(explicit_targets):
    logger.info("\rConfiguring executables...")

@@ -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)
@@ -16,8 +16,8 @@
 # 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/>.

-PYTHON:=python3.10
-PIP:=pip3.10
+PYTHON:=python3.11
+PIP:=pip3.11
 PATCH:=patch
 SED:=sed -i
 ifeq ($(OS),Windows_NT)
@@ -35,7 +35,12 @@ SED:=sed -i '' -e
 endif
 endif

-VERSION:=`date '+%y%m%d'`
+IS_STABLE:=FALSE
+VERSION:=$(shell cat ../../VERSION)
+VERSION_MAJOR:=$(shell cat '../../VERSION' | cut -d '.' -f 1)
+VERSION_MINOR:=$(shell cat '../../VERSION' | cut -d '.' -f 2)
+VERSION_PATCH:=$(shell cat '../../VERSION' | cut -d '.' -f 3)
+VERSION_DATE:=$(shell date '+%y%m%d')
 LAST_COMMIT_HASH:=$(shell git rev-parse HEAD)
 PYVERSION:=py310
 PYPI_IMP:=cp
@@ -55,70 +60,28 @@ 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
 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
-endif
-ifeq ($(PYVERSION), py310)
-LXML_ARCH:=macosx_11_0_x86_64
-endif
-ifeq ($(PYVERSION), py311)
-LXML_ARCH:=macosx_11_0_universal2
-endif
+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
 endif

 ifeq ($(PLATFORM), win)
 PYPI_PLATFORM:=--platform win_amd64
-LXML_ARCH:=win_amd64
-SHAPELY_ARCH:=win_amd64
-PILLOW_ARCH:=win_amd64
 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:
 	cd . && $(SED) "s/$(OLD)/$(NEW)/" Makefile
@@ -137,52 +100,54 @@ endif
 	cp -r blenderbim/* dist/blenderbim/

 	# Provides IfcOpenShell Python functionality
-	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v0.7.0-f7c03db-$(PLATFORM)64.zip
+	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v0.8.0-90ae709-$(PLATFORM)64.zip
 	cd dist/working && unzip ifcopenshell-python*
 	cp -r dist/working/ifcopenshell dist/blenderbim/libs/site/packages/

 	# See bug #812
-	cd dist/working && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.7.0/src/blenderbim/occ_utils.py
+	cd dist/working && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.8.0/src/blenderbim/occ_utils.py
 	cd dist/working && mv occ_utils.py ../blenderbim/libs/site/packages/ifcopenshell/geom/occ_utils.py
 	rm -rf dist/working

 	# Provides dependencies that are part of IfcOpenShell
 	mkdir dist/working
-	cd dist/working && wget https://github.com/IfcOpenShell/IfcOpenShell/archive/v0.7.0.zip
-	cd dist/working && unzip v0.7.0.zip
+	cd dist/working && wget https://github.com/IfcOpenShell/IfcOpenShell/archive/refs/heads/v0.8.0.zip
+	cd dist/working && unzip v0.8.0.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/
-	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/
+	rm -rf dist/blenderbim/libs/site/packages/ifcopenshell/util/
+	rm -rf dist/blenderbim/libs/site/packages/ifcopenshell/api/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifcopenshell-python/ifcopenshell/util dist/blenderbim/libs/site/packages/ifcopenshell/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifcopenshell-python/ifcopenshell/api dist/blenderbim/libs/site/packages/ifcopenshell/
+	cp dist/working/IfcOpenShell-0.8.0/src/ifcopenshell-python/ifcopenshell/*.py dist/blenderbim/libs/site/packages/ifcopenshell/
+	cp dist/working/IfcOpenShell-0.8.0/src/ifcopenshell-python/ifcopenshell/express/rule_executor.py dist/blenderbim/libs/site/packages/ifcopenshell/express/
 	# Provides bcf functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/bcf/src/bcf dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/bcf/src/bcf dist/blenderbim/libs/site/packages/
 	# Provides IFCClash functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcclash/ifcclash dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifcclash/ifcclash dist/blenderbim/libs/site/packages/
 	# Provides BIMTester functionality
 	cd dist/working && $(PYTHON) -m venv env
 	cd dist/working && . env/bin/activate && $(PIP) install pybabel
 	cd dist/working && . env/bin/activate && $(PIP) install babel
-	cd dist/working && . env/bin/activate && ./env/bin/pybabel compile -d ./IfcOpenShell-0.7.0/src/ifcbimtester/bimtester/locale/
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcbimtester/bimtester dist/blenderbim/libs/site/packages/
+	cd dist/working && . env/bin/activate && ./env/bin/pybabel compile -d ./IfcOpenShell-0.8.0/src/ifcbimtester/bimtester/locale/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifcbimtester/bimtester dist/blenderbim/libs/site/packages/
 	# Provides IFCTester functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifctester/ifctester dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifctester/ifctester dist/blenderbim/libs/site/packages/
 	# Provides IFCFM functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcfm/ifcfm dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifcfm/ifcfm dist/blenderbim/libs/site/packages/
 	# Provides bSDD functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/bsdd/* dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/bsdd/* dist/blenderbim/libs/site/packages/
 	# Provides IFCDiff functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcdiff/* dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifcdiff/* dist/blenderbim/libs/site/packages/
 	# Provides IFCCSV functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifccsv/* dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifccsv/* dist/blenderbim/libs/site/packages/
 	# Provides IFCPatch functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifcpatch/ifcpatch dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifcpatch/ifcpatch dist/blenderbim/libs/site/packages/
 	# Provides IFC4D functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifc4d/ifc4d dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifc4d/ifc4d dist/blenderbim/libs/site/packages/
 	# Provides IFC5D functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifc5d/ifc5d dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifc5d/ifc5d dist/blenderbim/libs/site/packages/
 	# Provides IFCCityJSON functionality
-	cp -r dist/working/IfcOpenShell-0.7.0/src/ifccityjson dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.8.0/src/ifccityjson dist/blenderbim/libs/site/packages/
 	# Provides IfcGit functionality
 	cd dist/working && . env/bin/activate && $(PIP) install GitPython --target=./site-packages
 	cp -r dist/working/site-packages/smmap dist/blenderbim/libs/site/packages/
@@ -190,49 +155,6 @@ 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
@@ -247,107 +169,6 @@ 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
@@ -364,7 +185,34 @@ endif
 	# Provides Brickschema functionality
 	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
+	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

@@ -374,33 +222,15 @@ endif
 	cd dist/working && tar -xzvf behave*
 	cd dist/working/behave-1.2.6/ && cp -r behave ../../blenderbim/libs/site/packages/
 	# See bug #1294
-	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.7.0/src/ifcbimtester/patch/model_core.patch
-	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.7.0/src/ifcbimtester/patch/runner_util.patch
+	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.8.0/src/ifcbimtester/patch/model_core.patch
+	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.8.0/src/ifcbimtester/patch/runner_util.patch
 	cd dist/working/ && $(PATCH) ../blenderbim/libs/site/packages/behave/model_core.py < model_core.patch
 	cd dist/working/ && $(PATCH) ../blenderbim/libs/site/packages/behave/runner_util.py < runner_util.patch
 	# See bug #2159
-	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.7.0/src/ifcbimtester/patch/junit.patch
+	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.8.0/src/ifcbimtester/patch/junit.patch
 	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
@@ -432,7 +262,7 @@ 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://github.com/IfcOpenShell/IfcOpenShell/raw/v0.7.0/src/blenderbim/scripts/pkg_resources.tar.gz
+	cd dist/working && wget https://github.com/IfcOpenShell/IfcOpenShell/raw/v0.8.0/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
@@ -456,10 +286,16 @@ endif
 	rm -rf dist/blenderbim/libs/site/packages/numpy
 	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
+ifeq ($(IS_STABLE), TRUE)
+	cd dist/blenderbim && $(SED) "s/0, 0, 0/$(VERSION_MAJOR), $(VERSION_MINOR), $(VERSION_PATCH)/" __init__.py
+	cd dist/blenderbim && $(SED) "s/0.0.0/$(VERSION)/" blender_manifest.toml
 	cd dist && zip -r blenderbim-$(VERSION)-$(PYVERSION)-$(PLATFORM).zip ./*
+else
+	cd dist/blenderbim && $(SED) "s/0, 0, 0/$(VERSION_MAJOR), $(VERSION_MINOR), $(VERSION_PATCH), $(VERSION_DATE)/" __init__.py
+	cd dist/blenderbim && $(SED) "s/0.0.0/$(VERSION).$(VERSION_DATE)/" blender_manifest.toml
+	cd dist/blenderbim/bim && $(SED) "s/8888888/$(LAST_COMMIT_HASH)/" __init__.py
+	cd dist && zip -r blenderbim-$(VERSION).$(VERSION_DATE)-$(PYVERSION)-$(PLATFORM).zip ./*
+endif
 	rm -rf dist/blenderbim

 .PHONY: test
@@ -18,30 +18,190 @@

 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 webbrowser
+import addon_utils
+from collections import deque

 bl_info = {
    "name": "BlenderBIM",
    "description": "Transforms Blender into a native Building Information Model authoring platform using IFC.",
    "author": "IfcOpenShell Contributors",
    "blender": (3, 1, 0),
-    "version": (0, 0, 999999),
+    "version": (0, 0, 0),
    "location": "File Menu, Scene Properties Tab. See documentation for more.",
    "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)
@@ -17,11 +17,11 @@
 # 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

@@ -103,6 +103,7 @@ classes = [
    operator.BIM_OT_select_object,
    operator.BIM_OT_show_description,
    operator.ClippingPlaneCutWithCappings,
+    operator.CloseError,
    operator.EditBlenderCollection,
    operator.FileAssociate,
    operator.FileUnassociate,
@@ -141,6 +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,
@@ -153,9 +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,
@@ -168,6 +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,
@@ -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'; }
@@ -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',$,'EPset_Drawing','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation',(#2,#3,#4,#5,#6,#7,#8,#9,#10,#11,#12,#13,#14,#15,#16,#17,#18,#19,#20,#21,#22,#23));
+#1=IFCPROPERTYSETTEMPLATE('2JhNIvqZrFnAgxfhK0XVQX',$,'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.);
@@ -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
@@ -36,6 +37,7 @@ import blenderbim.core.style
 from blenderbim.bim.ifc import IfcStore
 from mathutils import Vector
 from typing import Union
+from logging import Logger


 class IfcExporter:
@@ -97,7 +99,6 @@ class IfcExporter:
                    continue
                if obj.library:
                    continue
-                tool.Collector.sync(obj, skip_unlinking)
                result = self.sync_object_placement(obj)
                if result:
                    results.append(result)
@@ -163,10 +164,10 @@ 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)
@@ -184,11 +185,13 @@ 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
@@ -223,7 +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"):
@@ -238,7 +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)
@@ -279,7 +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 = {}

@@ -288,7 +301,8 @@ 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"))

@@ -29,7 +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
+from typing import Optional, Callable, Any, Union


 def draw_attributes(props, layout, copy_operator=None, popup_active_attribute=None):
@@ -91,7 +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}
@@ -221,15 +225,6 @@ def get_enum_items(data, prop_name, context=None):
    return items


-# 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

@@ -309,6 +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")
@@ -19,12 +19,15 @@
 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
@@ -37,19 +40,19 @@ IFC_CONNECTED_TYPE = Union[bpy.types.Material, bpy.types.Object]

 class IfcStore:
    path: str = ""
-    file: ifcopenshell.file = None
-    schema: ifcopenshell.ifcopenshell_wrapper.schema_definition = None
-    cache: ifcopenshell.ifcopenshell_wrapper.HdfSerializer = None
-    cache_path: str = None
+    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: ifcopenshell.file = None
+    pset_template_file: Optional[ifcopenshell.file] = None
    classification_path: str = ""
-    classification_file: ifcopenshell.file = None
+    classification_file: Optional[ifcopenshell.file] = None
    library_path: str = ""
-    library_file: ifcopenshell.file = None
+    library_file: Optional[ifcopenshell.file] = None
    current_transaction = ""
    last_transaction = ""
    history = []
@@ -97,7 +100,6 @@ class IfcStore:
            ifc_hash = hashlib.md5(ifc_key.encode("utf-8")).hexdigest()
            IfcStore.cache_path = os.path.join(bpy.context.scene.BIMProperties.data_dir, "cache", f"{ifc_hash}.h5")
            cache_settings = ifcopenshell.geom.settings()
-            cache_settings.set(cache_settings.STRICT_TOLERANCE, True)
            try:
                IfcStore.cache = ifcopenshell.geom.serializers.hdf5(IfcStore.cache_path, cache_settings)
            except:
@@ -119,7 +121,13 @@ 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
@@ -213,7 +221,7 @@ 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
@@ -329,6 +337,7 @@ class IfcStore:

    @staticmethod
    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)

@@ -343,10 +352,14 @@ 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():
@@ -26,6 +26,7 @@ import bmesh
 import logging
 import mathutils
 import numpy as np
+import numpy.typing as npt
 import multiprocessing
 import ifcopenshell
 import ifcopenshell.geom
@@ -34,7 +35,9 @@ 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, IFC_CONNECTED_TYPE
@@ -215,7 +218,6 @@ class IfcImporter:
        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 = {}
@@ -229,19 +231,19 @@ class IfcImporter:

        self.material_creator = MaterialCreator(ifc_import_settings, self)

-    def profile_code(self, message):
+    def profile_code(self, message: str) -> None:
        if not self.time:
            self.time = time.time()
        print("{} :: {:.2f}".format(message, time.time() - self.time))
        self.time = time.time()
        self.update_progress(self.progress + 1)

-    def update_progress(self, progress):
+    def update_progress(self, progress: float) -> None:
        if progress <= 100:
            self.progress = progress
        bpy.context.window_manager.progress_update(self.progress)

-    def execute(self):
+    def execute(self) -> None:
        bpy.context.window_manager.progress_begin(0, 100)
        self.profile_code("Starting import process")
        self.load_file()
@@ -260,8 +262,6 @@ class IfcImporter:
        self.profile_code("Create project")
        self.process_element_filter()
        self.profile_code("Process element filter")
-        self.create_collections()
-        self.profile_code("Create collections")
        self.create_materials()
        self.profile_code("Create materials")
        self.create_styles()
@@ -298,28 +298,32 @@ class IfcImporter:
        if self.ifc_import_settings.should_setup_viewport_camera:
            self.setup_viewport_camera()
        self.setup_arrays()
+        self.profile_code("Setup arrays")
+        tool.Spatial.run_spatial_import_spatial_decomposition()
+        if default_container := tool.Spatial.guess_default_container():
+            tool.Spatial.set_default_container(default_container)
        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):
+    def process_context_filter(self) -> None:
        # Annotation ContextType is to accommodate broken Revit files
        # See https://github.com/Autodesk/revit-ifc/issues/187
        type_priority = ["Model", "Plan", "Annotation"]
@@ -391,23 +395,21 @@ class IfcImporter:

        for context in self.contexts:
            settings = ifcopenshell.geom.settings()
-            settings.set('mesher-linear-deflection', self.ifc_import_settings.deflection_tolerance)
-            settings.set('mesher-angular-deflection', self.ifc_import_settings.angular_tolerance)
-            # settings.set(settings.STRICT_TOLERANCE, True)
-            settings.set('dimensionality', ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
-            settings.set('context-ids', [context.id()])
+            settings.set("mesher-linear-deflection", self.ifc_import_settings.deflection_tolerance)
+            settings.set("mesher-angular-deflection", self.ifc_import_settings.angular_tolerance)
+            settings.set("dimensionality", ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
+            settings.set("context-ids", [context.id()])
            self.context_settings.append(settings)

            settings = ifcopenshell.geom.settings()
-            settings.set('mesher-linear-deflection', self.ifc_import_settings.deflection_tolerance)
-            settings.set('mesher-angular-deflection', self.ifc_import_settings.angular_tolerance)
-            # settings.set(settings.STRICT_TOLERANCE, True)
-            settings.set('dimensionality', ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
-            settings.set('disable-opening-subtractions', True)
-            settings.set('context-ids', [context.id()])
+            settings.set("mesher-linear-deflection", self.ifc_import_settings.deflection_tolerance)
+            settings.set("mesher-angular-deflection", self.ifc_import_settings.angular_tolerance)
+            settings.set("dimensionality", ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
+            settings.set("disable-opening-subtractions", True)
+            settings.set("context-ids", [context.id()])
            self.gross_context_settings.append(settings)

-    def process_element_filter(self):
+    def process_element_filter(self) -> None:
        offset = self.ifc_import_settings.element_offset
        offset_limit = offset + self.ifc_import_settings.element_limit

@@ -474,7 +476,7 @@ class IfcImporter:
                    break
        return results

-    def parse_native_elements(self):
+    def parse_native_elements(self) -> None:
        if not self.ifc_import_settings.should_load_geometry:
            return
        for element in self.elements:
@@ -482,13 +484,13 @@ class IfcImporter:
                self.native_elements.add(element)
        self.elements -= self.native_elements

-    def is_native(self, element):
+    def is_native(self, element: ifcopenshell.entity_instance) -> bool:
        if (
            not element.Representation
            or not element.Representation.Representations
            or getattr(element, "HasOpenings", None)
        ):
-            return
+            return False

        representation = None
        representation_priority = None
@@ -503,7 +505,7 @@ class IfcImporter:
                    context = rep.ContextOfItems

        if not representation:
-            return
+            return False

        matrix = np.eye(4)
        representation_id = None
@@ -561,8 +563,11 @@ class IfcImporter:
                "type": "IfcFaceBasedSurfaceModel",
            }
            return True
+        return False

-    def is_native_swept_disk_solid(self, element, representation):
+    def is_native_swept_disk_solid(
+        self, element: ifcopenshell.entity_instance, representation: ifcopenshell.entity_instance
+    ) -> bool:
        items = [i["item"] for i in ifcopenshell.util.representation.resolve_items(representation)]
        if len(items) == 1 and items[0].is_a("IfcSweptDiskSolid"):
            if tool.Blender.Modifier.is_railing(element):
@@ -578,20 +583,20 @@ class IfcImporter:
            return True
        return False

-    def is_native_faceted_brep(self, representation):
+    def is_native_faceted_brep(self, representation: ifcopenshell.entity_instance) -> bool:
        # TODO handle mapped items
        for i in representation.Items:
            if i.is_a() != "IfcFacetedBrep":
                return False
        return True

-    def is_native_face_based_surface_model(self, representation):
+    def is_native_face_based_surface_model(self, representation: ifcopenshell.entity_instance) -> bool:
        for i in representation.Items:
            if i.is_a() != "IfcFaceBasedSurfaceModel":
                return False
        return True

-    def get_products_from_shape_representation(self, element):
+    def get_products_from_shape_representation(self, element: ifcopenshell.entity_instance) -> None:
        products = [pr.ShapeOfProduct[0] for pr in element.OfProductRepresentation]
        for rep_map in element.RepresentationMap:
            for usage in rep_map.MapUsage:
@@ -600,10 +605,15 @@ class IfcImporter:
                        products.extend(self.get_products_from_shape_representation(inverse_element))
        return products

-    def predict_dense_mesh(self):
+    def predict_dense_mesh(self) -> None:
+        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
@@ -611,16 +621,18 @@ 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

-    def calculate_model_offset(self):
+    def calculate_model_offset(self) -> None:
        props = bpy.context.scene.BIMGeoreferenceProperties
        if props.has_blender_offset:
            return
@@ -638,14 +650,14 @@ class IfcImporter:
            return self.guess_false_origin_and_project_north(building)
        return self.guess_false_origin()

-    def set_manual_blender_offset(self):
+    def set_manual_blender_offset(self) -> None:
        props = bpy.context.scene.BIMGeoreferenceProperties
        props.blender_eastings = str(self.ifc_import_settings.false_origin[0])
        props.blender_northings = str(self.ifc_import_settings.false_origin[1])
        props.blender_orthogonal_height = str(self.ifc_import_settings.false_origin[2])
        props.has_blender_offset = True

-    def guess_false_origin_and_project_north(self, element):
+    def guess_false_origin_and_project_north(self, element: ifcopenshell.entity_instance) -> None:
        if not element.ObjectPlacement or not element.ObjectPlacement.is_a("IfcLocalPlacement"):
            return
        placement = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
@@ -660,7 +672,7 @@ class IfcImporter:
            props.blender_x_axis_ordinate = str(placement[1][0])
        props.has_blender_offset = True

-    def guess_false_origin(self):
+    def guess_false_origin(self) -> None:
        # Civil BIM applications like to work in absolute coordinates, where the
        # ObjectPlacement is usually 0,0,0 (but not always, so we'll need to
        # check for the actual transformation) but each individual coordinate of
@@ -674,10 +686,10 @@ 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
+        element_checking_threshold = 3
        for element in self.file.by_type("IfcElement"):
            if not element.Representation:
                continue
@@ -693,18 +705,20 @@ class IfcImporter:
            shape = self.create_generic_shape(element)
            if not shape:
                continue
-            mat = np.array(shape.transformation.matrix).reshape((4, 4), order="F")
-            point = np.array(
+            mat = ifcopenshell.util.shape.get_shape_matrix(shape)
+            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:
@@ -721,26 +735,47 @@ 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: 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):
+            if (
+                not obj.data
+                and tool.Cad.is_x(matrix[0][3], 0)
+                and tool.Cad.is_x(matrix[1][3], 0)
+                and tool.Cad.is_x(matrix[2][3], 0)
+            ):
+                # We assume any non-geometric matrix at 0,0,0 is not
+                # positionally significant and is left alone. This handles
+                # scenarios where often spatial elements are left at 0,0,0 and
+                # everything else is at map coordinates.
+                obj.BIMObjectProperties.blender_offset_type = "NOT_APPLICABLE"
+                return mathutils.Matrix(matrix.tolist())
+            elif 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])):
+                if cartesian_point_offset := obj.data.get("cartesian_point_offset", None):
+                    obj.BIMObjectProperties.cartesian_point_offset = cartesian_point_offset
+                    offset_x, offset_y, offset_z = map(float, cartesian_point_offset.split(","))
+                    matrix[0][3] += offset_x
+                    matrix[1][3] += offset_y
+                    matrix[2][3] += offset_z
+            else:
                obj.BIMObjectProperties.blender_offset_type = "OBJECT_PLACEMENT"
-                matrix = ifcopenshell.util.geolocation.global2local(
-                    matrix,
-                    float(props.blender_eastings) * self.unit_scale,
-                    float(props.blender_northings) * self.unit_scale,
-                    float(props.blender_orthogonal_height) * self.unit_scale,
-                    float(props.blender_x_axis_abscissa),
-                    float(props.blender_x_axis_ordinate),
-                )
+            matrix = ifcopenshell.util.geolocation.global2local(
+                matrix,
+                float(props.blender_eastings) * self.unit_scale,
+                float(props.blender_northings) * self.unit_scale,
+                float(props.blender_orthogonal_height) * self.unit_scale,
+                float(props.blender_x_axis_abscissa),
+                float(props.blender_x_axis_ordinate),
+            )

        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
@@ -763,22 +798,16 @@ class IfcImporter:
            if grid.Representation:
                shape = self.create_generic_shape(grid)
            grid_obj = self.create_product(grid, shape)
+            grid_placement = self.get_element_matrix(grid)
            if bpy.context.preferences.addons["blenderbim"].preferences.lock_grids_on_import:
                grid_obj.lock_location = (True, True, True)
                grid_obj.lock_rotation = (True, True, True)
-            collection = bpy.data.collections.new(tool.Loader.get_name(grid))
-            u_axes = bpy.data.collections.new("UAxes")
-            collection.children.link(u_axes)
-            v_axes = bpy.data.collections.new("VAxes")
-            collection.children.link(v_axes)
-            self.create_grid_axes(grid.UAxes, u_axes, grid_obj)
-            self.create_grid_axes(grid.VAxes, v_axes, grid_obj)
+            self.create_grid_axes(grid.UAxes, grid_obj, grid_placement)
+            self.create_grid_axes(grid.VAxes, grid_obj, grid_placement)
            if grid.WAxes:
-                w_axes = bpy.data.collections.new("WAxes")
-                collection.children.link(w_axes)
-                self.create_grid_axes(grid.WAxes, w_axes, grid_obj)
+                self.create_grid_axes(grid.WAxes, grid_obj)

-    def create_grid_axes(self, axes, grid_collection, grid_obj):
+    def create_grid_axes(self, axes, grid_obj, grid_placement):
        for axis in axes:
            shape = self.create_generic_shape(axis.AxisCurve)
            mesh = self.create_mesh(axis, shape)
@@ -787,8 +816,7 @@ class IfcImporter:
                obj.lock_location = (True, True, True)
                obj.lock_rotation = (True, True, True)
            self.link_element(axis, obj)
-            self.set_matrix_world(obj, grid_obj.matrix_world)
-            grid_collection.objects.link(obj)
+            self.set_matrix_world(obj, self.apply_blender_offset_to_matrix_world(obj, grid_placement.copy()))

    def create_element_types(self):
        for element_type in self.element_types:
@@ -868,7 +896,7 @@ class IfcImporter:

    def create_generic_shape(
        self, element: ifcopenshell.entity_instance
-    ) -> Union[ifcopenshell_wrapper.TriangulationElement, None]:
+    ) -> Union[ifcopenshell.geom.ShapeElementType, None]:
        for settings in self.context_settings:
            try:
                result = ifcopenshell.geom.create_shape(settings, element)
@@ -1010,14 +1038,6 @@ class IfcImporter:
            self.profile_code("Merging by material")

    def create_structural_items(self):
-        # Create structural collections
-        self.structural_member_collection = bpy.data.collections.new("Members")
-        self.structural_connection_collection = bpy.data.collections.new("Connections")
-        self.structural_collection = bpy.data.collections.new("StructuralItems")
-        self.structural_collection.children.link(self.structural_member_collection)
-        self.structural_collection.children.link(self.structural_connection_collection)
-        self.project["blender"].children.link(self.structural_collection)
-
        self.create_generic_elements(set(self.file.by_type("IfcStructuralCurveMember")))
        self.create_generic_elements(set(self.file.by_type("IfcStructuralCurveConnection")))
        self.create_generic_elements(set(self.file.by_type("IfcStructuralSurfaceMember")))
@@ -1178,7 +1198,6 @@ class IfcImporter:
                styles.extend(style.Styles)

    def create_native_faceted_brep(self, element, mesh_name, native_data):
-        # TODO: georeferencing?
        # co [x y z x y z x y z ...]
        # vertex_index [i i i i i ...]
        # loop_start [0 3 6 9 ...] (for tris)
@@ -1203,45 +1222,27 @@ class IfcImporter:
        mesh = bpy.data.meshes.new("Native")

        props = bpy.context.scene.BIMGeoreferenceProperties
-        mat = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
        if props.has_blender_offset and self.is_point_far_away(self.mesh_data["co"][0:3], is_meters=False):
-            offset_point = np.linalg.inv(mat) @ np.array(
-                (
-                    float(props.blender_eastings),
-                    float(props.blender_northings),
-                    float(props.blender_orthogonal_height),
-                    0.0,
-                )
-            )
-            verts = [None] * len(self.mesh_data["co"])
-            for i in range(0, len(self.mesh_data["co"]), 3):
-                verts[i], verts[i + 1], verts[i + 2], _ = native_data["matrix"] @ mathutils.Vector(
-                    (
-                        *ifcopenshell.util.geolocation.enh2xyz(
-                            self.mesh_data["co"][i] * self.unit_scale,
-                            self.mesh_data["co"][i + 1] * self.unit_scale,
-                            self.mesh_data["co"][i + 2] * self.unit_scale,
-                            offset_point[0] * self.unit_scale,
-                            offset_point[1] * self.unit_scale,
-                            offset_point[2] * self.unit_scale,
-                            float(props.blender_x_axis_abscissa),
-                            float(props.blender_x_axis_ordinate),
-                        ),
-                        1,
-                    )
-                )
+            verts_array = np.array(self.mesh_data["co"])
+            verts_array *= self.unit_scale
+            offset_x, offset_y, offset_z = verts_array[0:3]
+            offset = np.array([-offset_x, -offset_y, -offset_z])
+            offset_verts = verts_array + np.tile(offset, len(verts_array) // 3)
+
+            if np.allclose(native_data["matrix"], np.identity(4), atol=1e-8):
+                verts = offset_verts.tolist()
+            else:
+                verts = self.apply_matrix_to_flat_coords(offset_verts, native_data["matrix"])
+
            mesh["has_cartesian_point_offset"] = True
+            mesh["cartesian_point_offset"] = f"{offset_x},{offset_y},{offset_z}"
        else:
-            verts = [None] * len(self.mesh_data["co"])
-            for i in range(0, len(self.mesh_data["co"]), 3):
-                verts[i], verts[i + 1], verts[i + 2], _ = native_data["matrix"] @ mathutils.Vector(
-                    (
-                        self.mesh_data["co"][i] * self.unit_scale,
-                        self.mesh_data["co"][i + 1] * self.unit_scale,
-                        self.mesh_data["co"][i + 2] * self.unit_scale,
-                        1,
-                    )
-                )
+            verts_array = np.array(self.mesh_data["co"])
+            verts_array *= self.unit_scale
+            if np.allclose(native_data["matrix"], np.identity(4), atol=1e-8):
+                verts = verts_array.tolist()
+            else:
+                verts = self.apply_matrix_to_flat_coords(verts_array, native_data["matrix"])
            mesh["has_cartesian_point_offset"] = False

        mesh.vertices.add(self.mesh_data["total_verts"])
@@ -1258,6 +1259,13 @@ class IfcImporter:
        mesh["ios_material_ids"] = self.mesh_data["material_ids"]
        return mesh

+    def apply_matrix_to_flat_coords(self, coords, matrix):
+        coords_array = np.array(coords).reshape(-1, 3)
+        ones = np.ones((coords_array.shape[0], 1))
+        homogeneous_coords = np.hstack([coords_array, ones])
+        transformed_coords = homogeneous_coords @ matrix.T
+        return transformed_coords[:, :3].flatten().tolist()
+
    def convert_representation_item_face_based_surface_model(self, item):
        mesh = item.get_info_2(recursive=True)
        for face_set in mesh["FbsmFaces"]:
@@ -1487,7 +1495,10 @@ 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
+        if types_collection := project_collection.children.get("IfcTypeProduct"):
+            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
@@ -1501,18 +1512,19 @@ class IfcImporter:
        if not last_obj:
            return

-        # temporarily unhide types collection to make sure all objects will be cleaned
+        # Temporarily unhide types collection to make sure all objects will be cleaned
        project_collection = bpy.context.view_layer.layer_collection.children[self.project["blender"].name]
-        types_collection = project_collection.children[self.type_collection.name]
-        types_collection.hide_viewport = False
-        bpy.context.view_layer.objects.active = last_obj
+        if types_collection := project_collection.children.get("IfcTypeProduct"):
+            types_collection.hide_viewport = False
+            bpy.context.view_layer.objects.active = last_obj

        bpy.ops.object.editmode_toggle()
        bpy.ops.mesh.tris_convert_to_quads()
        bpy.ops.mesh.normals_make_consistent()
        bpy.ops.object.editmode_toggle()

-        types_collection.hide_viewport = True
+        if types_collection:
+            types_collection.hide_viewport = True
        bpy.context.view_layer.objects.active = last_obj
        IfcStore.edited_objs.clear()

@@ -1577,120 +1589,18 @@ class IfcImporter:
        self.project["blender"].BIMCollectionProperties.obj = obj
        obj.BIMObjectProperties.collection = self.collections[project.GlobalId] = self.project["blender"]

-    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) -> None:
-        for rel_aggregate in self.project["ifc"].IsDecomposedBy or []:
-            self.create_spatial_decomposition_collection(self.project["blender"], rel_aggregate.RelatedObjects)
-
-        # Invalid IFCs may have orphaned spatial structure elements.
-        orphaned_spaces = [e for e in self.spatial_elements if e.GlobalId not in self.collections]
-        while orphaned_spaces:
-            self.create_spatial_decomposition_collection(self.project["blender"], orphaned_spaces)
-            orphaned_spaces = [e for e in self.spatial_elements if e.GlobalId not in self.collections]
-
-        tool.Loader.create_project_collection("Views")
-        self.type_collection = tool.Loader.create_project_collection("Types")
-
-    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
-            is_existing = False
-            if self.has_existing_project:
-                obj = tool.Ifc.get_object(element)
-                if obj:
-                    is_existing = True
-                    collection = obj.BIMObjectProperties.collection
-                    self.collections[element.GlobalId] = collection
-            if not is_existing:
-                collection = bpy.data.collections.new(tool.Loader.get_name(element))
-                self.collections[element.GlobalId] = collection
-                parent.children.link(collection)
-            if element.IsDecomposedBy:
-                for rel_aggregate in element.IsDecomposedBy:
-                    self.create_spatial_decomposition_collection(collection, rel_aggregate.RelatedObjects)
-
-    def create_aggregate_and_nest_collections(self):
-        if self.ifc_import_settings.has_filter:
-            rel_aggregates = set()
-            for element in self.elements:
-                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 (relating_obj := r.RelatingObject).is_a("IfcElement") or relating_obj.is_a("IfcElementType")
-            ] + [
-                r
-                for r in self.file.by_type("IfcRelNests")
-                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
-            print("Skipping aggregate collections for performance.")
-            self.ifc_import_settings.collection_mode = "SPATIAL_DECOMPOSITION"
-            return
-
-        aggregates: dict[str, dict] = {}
-        for rel_aggregate in rel_aggregates:
-            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
-
-        for global_id, aggregate in aggregates.items():
-            parent = ifcopenshell.util.element.get_aggregate(aggregate["element"])
-            if parent:
-                self.collections[parent.GlobalId].children.link(aggregate["collection"])
-                continue
-            parent = ifcopenshell.util.element.get_container(aggregate["element"])
-            if parent:
-                self.collections[parent.GlobalId].children.link(aggregate["collection"])
-                continue
-            if aggregate["element"].is_a("IfcElementType"):
-                self.type_collection.children.link(aggregate["collection"])
-                continue
-
-    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"):
@@ -1735,75 +1645,7 @@ class IfcImporter:
    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: 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: ifcopenshell.entity_instance, obj: bpy.types.Object
-    ) -> None:
-        if element.is_a("IfcProject"):
-            return
-        elif element.is_a("IfcGridAxis"):
-            return
-        elif element.GlobalId in self.collections:
-            collection = self.collections[element.GlobalId]
-            collection.BIMCollectionProperties.obj = obj
-            obj.BIMObjectProperties.collection = collection
-            collection.name = obj.name
-            return collection.objects.link(obj)
-        elif getattr(element, "Decomposes", None):
-            aggregate = ifcopenshell.util.element.get_aggregate(element)
-            return self.collections[aggregate.GlobalId].objects.link(obj)
-        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)
-        elif element.is_a("IfcSurfaceFeature") and self.file.schema == "IFC4X3":
-            adherend = element.AdheresToElement[0].RelatingElement
-            return self.collections[adherend.GlobalId].objects.link(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"):
-            return
-        elif element.GlobalId in self.collections:
-            collection = self.collections[element.GlobalId]
-            collection.BIMCollectionProperties.obj = obj
-            obj.BIMObjectProperties.collection = collection
-            return collection.objects.link(obj)
-        elif element.is_a("IfcTypeObject"):
-            return self.type_collection.objects.link(obj)
-        elif element.is_a("IfcStructuralMember"):
-            return self.structural_member_collection.objects.link(obj)
-        elif element.is_a("IfcStructuralConnection"):
-            return self.structural_connection_collection.objects.link(obj)
-        elif element.is_a("IfcAnnotation"):
-            group = self.get_drawing_group(element)
-            if group:
-                return self.collections[group.GlobalId].objects.link(obj)
-
-        container = ifcopenshell.util.element.get_container(element)
-        if container:
-            if element.is_a("IfcGrid"):  # TODO: refactor into a more holistic collection mode feature
-                grid_collection = bpy.data.collections.get(obj.name)
-                if grid_collection:  # Just in case we run into invalid grids from Revit
-                    self.collections[container.GlobalId].children.link(grid_collection)
-                    grid_collection.objects.link(obj)
-            else:
-                self.collections[container.GlobalId].objects.link(obj)
-
-        else:
-            self.ifc_import_settings.logger.warning("Warning: this object is outside the spatial hierarchy %s", element)
-            bpy.context.scene.collection.objects.link(obj)
+                tool.Collector.assign(obj)

    def is_curve_annotation(self, element):
        object_type = element.ObjectType
@@ -1881,13 +1723,17 @@ class IfcImporter:
            polyline.points[-1].co = mathutils.Vector(v2)
        return curve

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

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

@@ -1897,28 +1743,14 @@ class IfcImporter:
                and geometry.verts
                and self.is_point_far_away((geometry.verts[0], geometry.verts[1], geometry.verts[2]))
            ):
-                mat = np.array(shape.transformation.matrix).reshape((4, 4), order="F")
-                offset_point = np.linalg.inv(mat) @ np.array(
-                    (
-                        float(props.blender_eastings),
-                        float(props.blender_northings),
-                        float(props.blender_orthogonal_height),
-                        0.0,
-                    )
-                )
-                verts = [None] * len(geometry.verts)
-                for i in range(0, len(geometry.verts), 3):
-                    verts[i], verts[i + 1], verts[i + 2] = ifcopenshell.util.geolocation.enh2xyz(
-                        geometry.verts[i],
-                        geometry.verts[i + 1],
-                        geometry.verts[i + 2],
-                        offset_point[0] * self.unit_scale,
-                        offset_point[1] * self.unit_scale,
-                        offset_point[2] * self.unit_scale,
-                        float(props.blender_x_axis_abscissa),
-                        float(props.blender_x_axis_ordinate),
-                    )
+                # Shift geometry close to the origin based off that first vert it found
+                verts_array = np.array(geometry.verts)
+                offset = np.array([-geometry.verts[0], -geometry.verts[1], -geometry.verts[2]])
+                offset_verts = verts_array + np.tile(offset, len(verts_array) // 3)
+                verts = offset_verts.tolist()
+
                mesh["has_cartesian_point_offset"] = True
+                mesh["cartesian_point_offset"] = f"{geometry.verts[0]},{geometry.verts[1]},{geometry.verts[2]}"
            else:
                verts = geometry.verts
                mesh["has_cartesian_point_offset"] = False
@@ -1933,7 +1765,9 @@ 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)
@@ -2029,7 +1863,7 @@ 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
@@ -2051,7 +1885,6 @@ class IfcImportSettings:
        self.should_filter_spatial_elements = True
        self.should_setup_viewport_camera = True
        self.elements: set[ifcopenshell.entity_instance] = set()
-        self.collection_mode = "DECOMPOSITION"

    @staticmethod
    def factory(context=None, input_file=None, logger=None):
@@ -2063,7 +1896,6 @@ class IfcImportSettings:
            logger = logging.getLogger("ImportIFC")
        settings.logger = logger
        settings.diff_file = scene_diff.diff_json_file
-        settings.collection_mode = props.collection_mode
        settings.should_use_cpu_multiprocessing = props.should_use_cpu_multiprocessing
        settings.merge_mode = props.merge_mode
        settings.should_merge_materials_by_colour = props.should_merge_materials_by_colour
@@ -36,7 +36,6 @@ 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
@@ -68,12 +67,6 @@ class AggregateData:
    def has_related_objects(cls) -> bool:
        return bool(cls.get_related_objects())

-    @classmethod
-    def ifc_class(cls) -> str:
-        element = tool.Ifc.get_entity(bpy.context.active_object)
-        if element:
-            return element.is_a()
-
    @classmethod
    def total_linked_aggregate(cls):
        element = tool.Ifc.get_entity(bpy.context.active_object)
@@ -40,36 +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:
-            element = tool.Ifc.get().by_id(self.relating_object)
-            if element.IsDecomposedBy:
-                relating_obj = tool.Ifc.get_object(element)
-            else:
-                assembly = element.Decomposes[0].RelatingObject
-                relating_obj = tool.Ifc.get_object(assembly)
+            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):
@@ -96,12 +99,13 @@ class BIM_OT_aggregate_unassign_object(bpy.types.Operator, Operator):
            )

            # Removes Pset related to Linked Aggregates
-            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(), pset=pset)
-
+            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"""

@@ -132,6 +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)
@@ -139,20 +144,21 @@ 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)
            if not element:
                continue

-            tool.Collector.sync(obj)
            current_aggregate = ifcopenshell.util.element.get_aggregate(element)
            current_container = ifcopenshell.util.element.get_container(element)
            if current_aggregate:
@@ -173,8 +179,8 @@ 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
@@ -268,23 +274,23 @@ 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,
        )
+        blenderbim.core.spatial.import_spatial_decomposition(tool.Spatial)


 class BIM_OT_break_link_to_other_aggregates(bpy.types.Operator, Operator):
@@ -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)
@@ -20,6 +20,7 @@ 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):
@@ -52,12 +53,21 @@ 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"]:
@@ -72,7 +82,7 @@ class BIM_PT_aggregate(Panel):
                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="")

@@ -89,19 +99,6 @@ 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"
@@ -131,22 +128,29 @@ class BIM_PT_linked_aggregate(Panel):
        if not AggregateData.is_loaded:
            AggregateData.load()

-        props = context.active_object.BIMObjectAggregateProperties
+        obj = context.active_object
+        element = tool.Ifc.get_entity(obj)
+        props = obj.BIMObjectAggregateProperties
        row = layout.row(align=True)
-        row.label(text="Advanced Users Only", icon="ERROR")
-        row = layout.row(align=True)
-        
-        if type(AggregateData.data['total_linked_aggregate']) is int:
-            if AggregateData.data['total_linked_aggregate'] > 0:
-                row.label(text=f"{AggregateData.data['total_linked_aggregate']} Linked Aggregates")
-                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")
+
+
+        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="No Linked Aggregates")
+            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
@@ -39,14 +40,10 @@ 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)
+        obj = bpy.data.objects.get(self.obj)
        props = obj.BIMAttributeProperties
        props.attributes.clear()

@@ -84,13 +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"}
@@ -101,14 +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)

@@ -125,7 +114,7 @@ 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"}


@@ -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"])
@@ -59,6 +59,20 @@ class LoadBcfProject(bpy.types.Operator):
        if self.filepath:
            bcfstore.BcfStore.set_by_filepath(self.filepath)
        bcfxml = bcfstore.BcfStore.get_bcfxml()
+        # a  BCFv2.1 does not need to have a project, but BBIM likes to have one
+        # https://github.com/buildingSMART/BCF-XML/tree/release_2_1/Documentation#bcf-file-structure
+        nameless = "Unknown"
+        if bcfxml.project is None:
+            if bcfxml.version.version_id.startswith("2"):
+                print("No project, we will create one for BBIM.")
+                bcfxml.project_info = bcf.v2.model.ProjectExtension(
+                    project=bcf.v2.model.Project(
+                        name=nameless,
+                        project_id=str(uuid.uuid4())
+                    ), extension_schema=""
+                )
+        if bcfxml.project.name is None:
+            bcfxml.project.name = nameless
        context.scene.BCFProperties.name = bcfxml.project.name
        bpy.ops.bim.load_bcf_topics()
        return {"FINISHED"}
@@ -86,7 +100,19 @@ class LoadBcfTopics(bpy.types.Operator):
    def execute(self, context):
        bcfxml = bcfstore.BcfStore.get_bcfxml()
        context.scene.BCFProperties.topics.clear()
-        for index, topic_guid in enumerate(bcfxml.topics.keys()):
+        # workaround, one non standard topic would break reading entire bcf
+        # ignored these topics ATM
+        # happens on non standard nodes or on missing nodes in markup
+        topics2use = []
+        for topic_guid in bcfxml.topics.keys():
+            # print("topic guid: {}".format(topic_guid))
+            try:
+                topic_titel = bcfxml.topics[topic_guid].topic.title
+                topics2use.append(topic_guid)
+            except:
+                print("Problems on reading topic, thus ignored: {}".format(topic_guid))
+                continue
+        for index, topic_guid in enumerate(topics2use):
            new = context.scene.BCFProperties.topics.add()
            bpy.ops.bim.load_bcf_topic(topic_guid=topic_guid, topic_index=index)
        return {"FINISHED"}
@@ -938,33 +964,56 @@ 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 []}
+        self.set_exceptions(viewpoint, context)
+        self.set_view_setup_hints(viewpoint, context)
+        # set selection at the end not to conflict with .hide_spaces
+        self.set_selection(viewpoint)
+        self.set_colours(viewpoint)

+    def set_exceptions(self, viewpoint, context):
+        if (
+            not hasattr(viewpoint.visualization_info.components, "visibility")
+            or not hasattr(viewpoint.visualization_info.components.visibility.exceptions, "component")
+        ):
+            return
+
+        exception_global_ids = {v.ifc_guid for v in viewpoint.visualization_info.components.visibility.exceptions.component or []}
+
+        # print("default_visibility: {}".format(viewpoint.visualization_info.components.visibility.default_visibility))
        if viewpoint.visualization_info.components.visibility.default_visibility:
+            # default_visibility is True: show all objs, hide the exceptions
            old = context.area.type
            context.area.type = "VIEW_3D"
            bpy.ops.object.hide_view_clear()
            context.area.type = old
            for global_id in exception_global_ids:
+                # print("{}: hide".format(global_id))
                obj = IfcStore.get_element(global_id)
                if obj and bpy.context.view_layer.objects.get(obj.name):
+                    # print("  obj found")
                    obj.hide_set(True)
        else:
+            # default_visibility is False: hide all objs, show the exceptions
            objs = []
            for global_id in exception_global_ids:
+                # print("{}: show".format(global_id))
                obj = IfcStore.get_element(global_id)
                if obj:
+                    # print("  obj found")
                    objs.append(obj)
            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

+    def set_view_setup_hints(self, viewpoint, context):
        if viewpoint.visualization_info.components.view_setup_hints:
            if not viewpoint.visualization_info.components.view_setup_hints.spaces_visible:
                self.hide_spaces(context)
@@ -976,10 +1025,6 @@ class ActivateBcfViewpoint(bpy.types.Operator):
            self.hide_spaces(context)
            self.set_openings_visibility(False, context)

-        # set selection at the end not to conflict with .hide_spaces
-        self.set_selection(viewpoint)
-        self.set_colours(viewpoint)
-
    def hide_spaces(self, context):
        old = context.area.type
        context.area.type = "VIEW_3D"
@@ -997,18 +1042,25 @@ class ActivateBcfViewpoint(bpy.types.Operator):
        selected_global_ids = [s.ifc_guid for s in viewpoint.visualization_info.components.selection.component or []]
        bpy.ops.object.select_all(action="DESELECT")
        for global_id in selected_global_ids:
+            # print("{}: selected".format(global_id))
            obj = IfcStore.get_element(global_id)
            if obj:
+                # print("  obj found")
                obj.select_set(True)
+                obj.hide_set(False)

    def set_colours(self, viewpoint):
+        if not viewpoint.visualization_info.components or not viewpoint.visualization_info.components.coloring:
+            return
        global_id_colours = {}
-        for coloring in viewpoint.visualization_info.components.coloring or []:
-            for component in coloring.components:
-                global_id_colours.setdefault(component.ifc_guid, coloring.color)
+        for acoloring in viewpoint.visualization_info.components.coloring.color:
+            for acomponent in acoloring.component:
+                global_id_colours.setdefault(acomponent.ifc_guid, acoloring.color)
        for global_id, color in global_id_colours.items():
+            # print("{}: color: {}: {}".format(global_id, color, self.hex_to_rgb(color)))
            obj = IfcStore.get_element(global_id)
            if obj:
+                # print("  obj found   ")
                obj.color = self.hex_to_rgb(color)

    def draw_lines(self, viewpoint, context):
@@ -1092,8 +1144,14 @@ class ActivateBcfViewpoint(bpy.types.Operator):
    def hex_to_rgb(self, value):
        value = value.lstrip("#")
        lv = len(value)
-        t = tuple(int(value[i : i + lv // 3], 16) for i in range(0, lv, lv // 3))
-        return [t[0] / 255.0, t[1] / 255.0, t[2] / 255.0, 1]
+        # https://github.com/buildingSMART/BCF-XML/tree/release_3_0/Documentation#coloring
+        if lv == 8:
+            t = tuple(int(value[i : i + lv // 4], 16) for i in range(0, lv, lv // 4))
+            col = [t[1] / 255.0, t[2] / 255.0, t[3] / 255.0,  t[0] / 255.0]
+        else:
+            t = tuple(int(value[i : i + lv // 3], 16) for i in range(0, lv, lv // 3))
+            col = [t[0] / 255.0, t[1] / 255.0, t[2] / 255.0, 1]
+        return col


 class OpenBcfReferenceLink(bpy.types.Operator):
@@ -20,6 +20,7 @@ import bpy
 import bmesh
 import logging
 import shapely
+import shapely.ops
 import mathutils
 import numpy as np
 import multiprocessing
@@ -132,14 +133,11 @@ class Loader:
        return mesh

    def load_settings(self):
-        settings = ifcopenshell.geom.settings()
-        settings.set(settings.EXCLUDE_SOLIDS_AND_SURFACES, False)
-        settings.set(settings.USE_BREP_DATA, False)
-        return settings
+        return ifcopenshell.geom.settings()

    def load_fallback_settings(self):
        settings = ifcopenshell.geom.settings()
-        settings.set(settings.INCLUDE_CURVES, True)
+        settings.set("dimensionality", ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
        return settings

    def load_importer(self):
@@ -631,24 +629,18 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
            # TODO : refactor to be able to generate all boundaries for selected space automatically or with an option

            def msg(self, context):
-                self.layout.label(text="NO ACTIVE STOREY")
+                self.layout.label(text="Please set an active container to detect space boundaries from.")

            element = tool.Ifc.get_entity(objs[0])
            if element.is_a("IfcSpace"):
                relating_space = element
                relating_space_obj = objs[0]

-            collection = context.view_layer.active_layer_collection.collection
-            collection_obj = bpy.data.objects.get(collection.name)
-            if not collection_obj:
-                bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-                return
-            spatial_element = tool.Ifc.get_entity(collection_obj)
-            if not spatial_element:
+            if not (container := tool.Root.get_default_container()):
                bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
                return

-            for subelement in ifcopenshell.util.element.get_decomposition(spatial_element):
+            for subelement in ifcopenshell.util.element.get_decomposition(container):
                if not (
                    subelement.is_a("IfcWall") or subelement.is_a("IfcSlab") or subelement.is_a("IfcVirtualElement")
                ):
@@ -691,8 +683,7 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
        tree = ifcopenshell.geom.tree()
        shapes = {}
        settings = ifcopenshell.geom.settings()
-        settings.set(settings.STRICT_TOLERANCE, True)
-        settings.set(settings.DISABLE_OPENING_SUBTRACTIONS, True)
+        settings.set("disable-opening-subtractions", True)
        iterator = ifcopenshell.geom.iterator(settings, tool.Ifc.get(), multiprocessing.cpu_count(), include=include)
        if iterator.initialize():
            while True:
@@ -830,17 +821,10 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):

                        # Create shape of opening as a dissolved BMesh
                        settings = ifcopenshell.geom.settings()
-                        settings.set(settings.STRICT_TOLERANCE, True)
                        shape = ifcopenshell.geom.create_shape(settings, opening)
                        m = shape.transformation.matrix
-                        mat = Matrix(
-                            (
-                                [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],
-                            )
-                        )
+                        mat = Matrix(ifcopenshell.util.shape.get_shape_matrix(shape))
+                        mat.translation = (0, 0, 0)
                        opening_bm = bmesh.new()
                        verts = ifcopenshell.util.shape.get_vertices(shape.geometry)
                        for vert in verts:
@@ -1031,12 +1015,10 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):

        settings = ifcopenshell.geom.settings()
        if not element.is_a("IfcOpeningElement"):
-            settings.set(settings.DISABLE_OPENING_SUBTRACTIONS, True)
-        settings.set(settings.STRICT_TOLERANCE, True)
+            settings.set("disable-opening-subtractions", True)
        # geometry = ifcopenshell.geom.create_shape(settings, body)
        shape = ifcopenshell.geom.create_shape(settings, element)
-        m = shape.transformation.matrix
-        mat = Matrix(([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]))
+        mat = Matrix(ifcopenshell.util.shape.get_shape_matrix(shape))
        verts = [space_matrix_i @ mat @ Vector(v) for v in ifcopenshell.util.shape.get_vertices(shape.geometry)]
        faces = ifcopenshell.util.shape.get_faces(shape.geometry)
        polygons = []
@@ -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):
@@ -77,26 +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(),
-            products=[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


@@ -150,8 +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)
@@ -164,8 +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"}

@@ -209,6 +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()

@@ -253,8 +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
@@ -268,8 +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"}


@@ -322,8 +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:
@@ -364,9 +374,8 @@ class AddClassificationReference(bpy.types.Operator, tool.Ifc.Operator):
                classification = element
                break

-        ifc_file = tool.Ifc.get()
        products = [
-            ifc_file.by_id(ifc_definition_id)
+            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))
        ]
@@ -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"
@@ -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
@@ -35,6 +35,7 @@ class Operator:
        blenderbim.bim.handler.refresh_ui_data()
        return {"FINISHED"}

+
 class CoveringTool(WorkSpaceTool):
    bl_space_type = "VIEW_3D"
    bl_context_mode = "OBJECT"
@@ -53,18 +54,19 @@ class CoveringTool(WorkSpaceTool):
    def draw_settings(cls, context, layout, ws_tool):
        CoveringToolUI.draw(context, layout, ifc_element_type=cls.ifc_element_type)

+
 def add_layout_hotkey(layout, text, hotkey, description):
    args = ["covering", layout, text, hotkey, description]
    tool.Blender.add_layout_hotkey_operator(*args)

+
 class CoveringToolUI:
    @classmethod
-    def draw(cls, context, layout, ifc_element_type = None):
+    def draw(cls, context, layout, ifc_element_type=None):
        cls.layout = layout
        cls.props = context.scene.BIMModelProperties
        cls.covering_props = context.scene.BIMCoveringProperties

-
        row = cls.layout.row(align=True)
        if not tool.Ifc.get():
            row.label(text="No IFC Project", icon="ERROR")
@@ -82,8 +84,6 @@ class CoveringToolUI:

        cls.draw_default_interface()

-
-
    @classmethod
    def draw_header_interface(cls):
        cls.draw_type_selection_interface()
@@ -95,93 +95,35 @@ class CoveringToolUI:
        row = cls.layout.row(align=True)
        row.prop(data=cls.covering_props, property="ceiling_height", text="Ceiling Height")
        if AuthoringData.data["ifc_classes"]:
-            active_obj = bpy.context.active_object
-            element = tool.Ifc.get_entity(active_obj)
-            collection = bpy.context.view_layer.active_layer_collection.collection
-            collection_obj = collection.BIMCollectionProperties.obj
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            row.operator("bim.add_constr_type_instance", text="Add")

-            relating_type_id = int(cls.props.relating_type_id)
-            type_material_usage = ifcopenshell.util.element.get_material(tool.Ifc.get().by_id(relating_type_id)).is_a()
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            row.operator("bim.add_instance_flooring_covering_from_cursor")

-#               PLEASE KEEP COMMENTS AS A REMINDER
-#                elif element and bpy.context.selected_objects and element.is_a("IfcSpace"):
-#                    op. = row.operator("bim.add_istance_flooring_from_spaces"):
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            row.operator("bim.add_instance_ceiling_covering_from_cursor")

-            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)
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            row.operator("bim.add_instance_flooring_coverings_from_walls")

-                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)
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_A")
+            row.operator("bim.add_instance_ceiling_coverings_from_walls")

-            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")
-
-
-
-#            elif AuthoringData.data["predefined_type"] == "CEILING":
-#                row = cls.layout.row(align=True)
-#                row.prop(data=cls.props, property="ceiling_height", text="ceiling height")
-#                if element and bpy.context.selected_objects and element.is_a("IfcWall"):
-#                    op = row.operator("bim.add_instance_ceiling_coverings_from_walls")
-#                elif element and bpy.context.selected_objects and element.is_a("IfcSpace"):
-#                    op. = row.operator("bim.add_istance_flooring_from_spaces"):
-#                else:
-#                    op = row.operator("bim.add_instance_ceiling_from_cursor")
-#                    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)
+            row = cls.layout.row(align=True)
+            row.label(text="", icon="EVENT_SHIFT")
+            row.label(text="", icon="EVENT_G")
+            row.operator("bim.regen_selected_covering_object")

    @classmethod
    def draw_type_selection_interface(cls):
@@ -227,7 +169,7 @@ class Hotkey(bpy.types.Operator, Operator):
        return operator.description or ""

    def _execute(self, context):
-#        self.props = context.scene.BIMCoveringProperties
+        #        self.props = context.scene.BIMCoveringProperties
        getattr(self, f"hotkey_{self.hotkey}")()

    def invoke(self, context, event):
@@ -241,20 +183,19 @@ class Hotkey(bpy.types.Operator, Operator):
    def hotkey_S_A(self):
        active_obj = bpy.context.active_object
        element = tool.Ifc.get_entity(active_obj)
-        collection = bpy.context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
+        container = tool.Root.get_default_container()

        if AuthoringData.data["predefined_type"] == "FLOORING":
            if element and bpy.context.selected_objects and element.is_a("IfcWall"):
                bpy.ops.bim.add_instance_flooring_coverings_from_walls()
-            elif tool.Ifc.get_entity(collection_obj):
+            elif container:
                bpy.ops.bim.add_instance_flooring_covering_from_cursor()
            else:
                bpy.ops.bim.add_constr_type_instance()
        elif AuthoringData.data["predefined_type"] == "CEILING":
            if element and bpy.context.selected_objects and element.is_a("IfcWall"):
                bpy.ops.bim.add_instance_ceiling_coverings_from_walls()
-            elif tool.Ifc.get_entity(collection_obj):
+            elif container:
                bpy.ops.bim.add_instance_ceiling_covering_from_cursor()
            else:
                bpy.ops.bim.add_constr_type_instance()
@@ -264,9 +205,10 @@ class Hotkey(bpy.types.Operator, Operator):
    def hotkey_S_G(self):
        active_obj = bpy.context.active_object
        element = tool.Ifc.get_entity(active_obj)
-        if (element and
-            bpy.context.selected_objects and
-            element.is_a("IfcCovering") and
-            AuthoringData.data["active_material_usage"] == "LAYER3"):
-                bpy.ops.bim.regen_selected_covering_object()
-
+        if (
+            element
+            and bpy.context.selected_objects
+            and element.is_a("IfcCovering")
+            and AuthoringData.data["active_material_usage"] == "LAYER3"
+        ):
+            bpy.ops.bim.regen_selected_covering_object()
@@ -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"}


@@ -35,7 +35,6 @@ classes = (
    operator.PrintUnusedElementStats,
    operator.ProfileImportIFC,
    operator.PurgeHdf5Cache,
-    operator.PurgeIfcLinks,
    operator.PurgeUnusedElementsByClass,
    operator.RewindInspector,
    operator.SelectExpressFile,
@@ -24,9 +24,9 @@ import random
 import logging
 import platform
 import subprocess
-import addon_utils
 import ifcopenshell
 import ifcopenshell.api
+import ifcopenshell.geom
 import ifcopenshell.util.element
 import ifcopenshell.util.placement
 import ifcopenshell.util.representation
@@ -34,38 +34,17 @@ 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(
                {
@@ -76,17 +55,15 @@ 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"}


@@ -104,10 +81,11 @@ 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:
@@ -116,7 +94,8 @@ 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()
@@ -124,26 +103,6 @@ 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"
@@ -214,7 +173,7 @@ class CreateAllShapes(bpy.types.Operator):
        total = len(elements)
        settings = ifcopenshell.geom.settings()
        settings_2d = ifcopenshell.geom.settings()
-        settings_2d.set(settings_2d.INCLUDE_CURVES, True)
+        settings_2d.set("dimensionality", ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
        failures = []
        excludes = ()  # For the developer to debug with
        for i, element in enumerate(elements, 1):
@@ -267,7 +226,7 @@ class CreateShapeFromStepId(bpy.types.Operator):
        element = self.file.by_id(self.step_id or int(context.scene.BIMDebugProperties.step_id))
        settings = ifcopenshell.geom.settings()
        if self.should_include_curves:
-            settings.set(settings.INCLUDE_CURVES, True)
+            settings.set("dimensionality", ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
        shape = ifcopenshell.geom.create_shape(settings, element)
        if shape:
            ifc_importer = import_ifc.IfcImporter(self.ifc_import_settings)
@@ -60,9 +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")

@@ -159,9 +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")
@@ -404,7 +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
@@ -418,12 +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)
@@ -2014,6 +2013,13 @@ class DecorationsHandler:
        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?
@@ -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
@@ -219,11 +221,12 @@ 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_i, drawing_id in enumerate(drawings_to_print):
            self.drawing_index = drawing_i
@@ -473,7 +476,7 @@ class CreateDrawing(bpy.types.Operator):
                if not context or not drawing_elements:
                    continue
                geom_settings = ifcopenshell.geom.settings(
-                    DISABLE_TRIANGULATION=True, STRICT_TOLERANCE=True, INCLUDE_CURVES=True
+                    DISABLE_TRIANGULATION=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()
@@ -527,31 +530,38 @@ 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.
-            target_view = ifcopenshell.util.element.get_psets(self.camera_element)["EPset_Drawing"]["TargetView"]
            contexts = self.get_linework_contexts(ifc, target_view)
-            drawing_elements = tool.Drawing.get_drawing_elements(self.camera_element)
-
-            self.setup_serialiser(ifc, target_view)
-            tree = ifcopenshell.geom.tree()
-            tree.enable_face_styles(True)
-
            self.serialize_contexts_elements(ifc, tree, contexts, "body", drawing_elements, target_view)
            self.serialize_contexts_elements(ifc, tree, contexts, "annotation", drawing_elements, target_view)

-            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)
+                    geom_settings = ifcopenshell.geom.settings(DISABLE_TRIANGULATION=True)
                    it = ifcopenshell.geom.iterator(geom_settings, ifc, include=[self.camera_element])
                    for elem in it:
                        self.serialiser.write(elem)
@@ -863,13 +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
+            DISABLE_TRIANGULATION=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)
@@ -933,6 +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:
@@ -947,7 +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)
@@ -960,6 +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

@@ -1241,12 +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
@@ -1314,9 +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:
@@ -1327,7 +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:
@@ -1335,7 +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
@@ -1444,13 +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:
@@ -1468,6 +1506,11 @@ 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"}

@@ -1495,7 +1538,7 @@ class ActivateDrawing(bpy.types.Operator):
        if not self.camera_view_point:
            viewport_position = tool.Blender.get_viewport_position()

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

        if not self.camera_view_point:
            tool.Blender.set_viewport_position(viewport_position)
@@ -1589,7 +1632,7 @@ 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
@@ -1841,10 +1884,10 @@ class ActivateDrawingStyle(bpy.types.Operator, Operator):
            except:
                continue
            if self.drawing_style.include_query:
-                results = ifcopenshell.util.selector.Selector.parse(ifc, self.drawing_style.include_query)
+                results = ifcopenshell.util.selector.filter_elements(ifc, self.drawing_style.include_query)
                self.include_global_ids.extend([e.GlobalId for e in results])
            if self.drawing_style.exclude_query:
-                results = ifcopenshell.util.selector.Selector.parse(ifc, self.drawing_style.exclude_query)
+                results = ifcopenshell.util.selector.filter_elements(ifc, self.drawing_style.exclude_query)
                self.exclude_global_ids.extend([e.GlobalId for e in results])
        if self.drawing_style.include_query:
            self.parse_filter_query("INCLUDE", context)
@@ -1988,12 +2031,14 @@ 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()
@@ -2042,12 +2087,15 @@ 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()
@@ -2392,8 +2440,8 @@ 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"
@@ -2419,7 +2467,7 @@ 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
@@ -315,9 +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):
@@ -371,6 +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
@@ -22,7 +22,6 @@ import bpy
 import math
 import bmesh
 import shutil
-import pystache
 import mathutils
 import xml.etree.ElementTree as ET
 import svgwrite
@@ -719,14 +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:
@@ -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,
@@ -45,19 +52,13 @@ classes = (
    operator.RefreshLinkedAggregate,
    operator.RemoveConnection,
    operator.RemoveRepresentation,
+    operator.RemoveRepresentationItem,
+    operator.RemoveRepresentationItemFromShapeAspect,
    operator.SelectConnection,
    operator.SwitchRepresentation,
+    operator.UnassignRepresentationItemStyle,
    operator.UpdateParametricRepresentation,
    operator.UpdateRepresentation,
-    operator.RemoveRepresentationItem,
-    operator.EnableEditingRepresentationItemStyle,
-    operator.EditRepresentationItemStyle,
-    operator.DisableEditingRepresentationItemStyle,
-    operator.UnassignRepresentationItemStyle,
-    operator.EnableEditingRepresentationItemShapeAspect,
-    operator.EditRepresentationItemShapeAspect,
-    operator.DisableEditingRepresentationItemShapeAspect,
-    operator.RemoveRepresentationItemFromShapeAspect,
    prop.RepresentationItem,
    prop.ShapeAspect,
    prop.BIMObjectGeometryProperties,
@@ -119,6 +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
@@ -222,7 +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

@@ -327,12 +328,17 @@ class PlacementData:

    @classmethod
    def load(cls):
-        cls.data = {
-            "has_placement": cls.has_placement(),
-            "original_x": cls.original_x(),
-            "original_y": cls.original_y(),
-            "original_z": cls.original_z(),
-        }
+        cls.data = {"has_placement": cls.has_placement()}
+
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        obj = bpy.context.active_object
+        if obj and props.has_blender_offset:
+            xyz = cls.original_xyz(obj)
+            cls.data.update({
+                "original_x": str(xyz[0]),
+                "original_y": str(xyz[1]),
+                "original_z": str(xyz[2]),
+            })
        cls.is_loaded = True

    @classmethod
@@ -343,40 +349,18 @@ class PlacementData:
        return False

    @classmethod
-    def original_x(cls):
+    def original_xyz(cls, obj):
+        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
        props = bpy.context.scene.BIMGeoreferenceProperties
-        obj = bpy.context.active_object
-        if not obj or not props.has_blender_offset:
-            return
-        return str(round(cls.original_xyz(obj.location)[0], 3))
-
-    @classmethod
-    def original_y(cls):
-        props = bpy.context.scene.BIMGeoreferenceProperties
-        obj = bpy.context.active_object
-        if not obj or not props.has_blender_offset:
-            return
-        return str(round(cls.original_xyz(obj.location)[1], 3))
-
-    @classmethod
-    def original_z(cls):
-        props = bpy.context.scene.BIMGeoreferenceProperties
-        obj = bpy.context.active_object
-        if not obj or not props.has_blender_offset:
-            return
-        return str(round(cls.original_xyz(obj.location)[2], 3))
-
-    @classmethod
-    def original_xyz(cls, location):
-        props = bpy.context.scene.BIMGeoreferenceProperties
-        return ifcopenshell.util.geolocation.xyz2enh(
-            location[0],
-            location[1],
-            location[2],
-            float(props.blender_eastings),
-            float(props.blender_northings),
-            float(props.blender_orthogonal_height),
+        xyz = ifcopenshell.util.geolocation.xyz2enh(
+            obj.matrix_world[0][3],
+            obj.matrix_world[1][3],
+            obj.matrix_world[2][3],
+            float(props.blender_eastings) * unit_scale,
+            float(props.blender_northings) * unit_scale,
+            float(props.blender_orthogonal_height) / unit_scale,
            float(props.blender_x_axis_abscissa),
            float(props.blender_x_axis_ordinate),
            1.0,
        )
+        return [round(o, 3) / unit_scale for o in xyz]  # To nearest mm of precision
@@ -538,7 +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}

@@ -28,6 +28,7 @@ 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
@@ -39,6 +40,7 @@ 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:
@@ -136,19 +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")
@@ -165,17 +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)
@@ -183,6 +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):
@@ -215,6 +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
@@ -223,6 +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:
@@ -342,14 +374,12 @@ class UpdateRepresentation(bpy.types.Operator, Operator):

        gprop = context.scene.BIMGeoreferenceProperties
        coordinate_offset = None
-        if gprop.has_blender_offset and obj.BIMObjectProperties.blender_offset_type == "CARTESIAN_POINT":
-            coordinate_offset = Vector(
-                (
-                    float(gprop.blender_eastings),
-                    float(gprop.blender_northings),
-                    float(gprop.blender_orthogonal_height),
-                )
-            )
+        if (
+            gprop.has_blender_offset
+            and obj.BIMObjectProperties.blender_offset_type == "CARTESIAN_POINT"
+            and obj.BIMObjectProperties.cartesian_point_offset
+        ):
+            coordinate_offset = Vector(map(float, obj.BIMObjectProperties.cartesian_point_offset.split(",")))

        representation_data = {
            "context": context_of_items,
@@ -370,7 +400,11 @@ 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):
            [
@@ -538,6 +572,8 @@ 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())

@@ -562,6 +598,11 @@ 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):
@@ -672,6 +713,10 @@ 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()
@@ -683,7 +728,7 @@ 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]
@@ -843,7 +888,7 @@ class OverrideDuplicateMove(bpy.types.Operator):

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

@@ -896,25 +941,21 @@ class OverrideDuplicateMove(bpy.types.Operator):
                if entity in old_to_new.keys():
                    core.remove_connection(tool.Geometry, connection=connection)

-    @staticmethod
-    def handle_linked_aggregates(old_to_new):
+    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:
-                old_aggregate = ifcopenshell.util.element.get_aggregate(old)
-                new_aggregate = ifcopenshell.util.element.get_aggregate(new[0])
-                if old_aggregate == new_aggregate:
-                    parts = ifcopenshell.util.element.get_parts(new_aggregate)
-                    if parts:
-                        index = DuplicateMoveLinkedAggregate.get_max_index(parts)
-                        index += 1
-                        pset = tool.Ifc.get().by_id(pset["id"])
-                        ifcopenshell.api.run(
-                            "pset.edit_pset",
-                            tool.Ifc.get(),
-                            pset=pset,
-                            properties={"Index": index},
-                        )
+                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):
@@ -940,14 +981,15 @@ 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)

@@ -962,7 +1004,7 @@ 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"
@@ -974,15 +1016,15 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
            obj.select_set(True)
            parts = ifcopenshell.util.element.get_parts(element)
            if parts:
-                index = DuplicateMoveLinkedAggregate.get_max_index(parts)
+                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)
                    else:
-                        add_linked_aggregate_pset(part, index)
-                        index += 1
+                        index = add_linked_aggregate_pset(part, index)
+                        # index += 1

                    obj = tool.Ifc.get_object(part)
                    obj.select_set(True)
@@ -999,6 +1041,8 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
                    pset=pset,
                    properties={"Index": index},
                )
+
+                index += 1
            else:
                pass

@@ -1014,10 +1058,8 @@ 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)
-            ifcopenshell.api.run(
-                "group.assign_group", tool.Ifc.get(), products=[element], group=linked_aggregate_group
-            )
+            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 custom_incremental_naming_for_element_assembly(old_to_new):
            for new in old_to_new.values():
@@ -1042,6 +1084,49 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
                        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:
+                return 0
+
+        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
+
+
        if len(context.selected_objects) != 1:
            return {"FINISHED"}

@@ -1062,26 +1147,36 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):

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

+        tool.Root.recreate_aggregate(old_to_new)
+
+        copy_linked_aggregate_data(old_to_new)
+
        custom_incremental_naming_for_element_assembly(old_to_new)

-        # Recreate aggregate relationship
-        for old in old_to_new.keys():
-            if old.is_a("IfcElementAssembly"):
-                tool.Root.recreate_aggregate(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

-    @staticmethod
-    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:
-            return 0
+
+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):
@@ -1216,6 +1311,22 @@ 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.")
@@ -1255,10 +1366,7 @@ 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)

@@ -1269,15 +1377,9 @@ 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
+                old_to_new = DuplicateMoveLinkedAggregate.execute_ifc_duplicate_linked_aggregate_operator(self, context)
+
+                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"):
@@ -1409,14 +1511,13 @@ 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"}


@@ -1589,20 +1690,11 @@ 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)

@@ -1664,8 +1756,6 @@ 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)


@@ -138,3 +138,4 @@ class BIMGeometryProperties(PropertyGroup):
        name="IFC Interaction Mode",
        update=update_mode,
    )
+    representation_from_object: PointerProperty(type=bpy.types.Object)
@@ -34,6 +34,8 @@ 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)


@@ -31,7 +31,6 @@ classes = (
    operator.SelectGroupProducts,
    operator.ToggleGroup,
    operator.UnassignGroup,
-    operator.UpdateGroup,
    operator.SelectGroupElements,
    prop.ExpandedGroups,
    prop.Group,
@@ -22,7 +22,6 @@ import ifcopenshell.api
 import blenderbim.bim.helper
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
-from ifcopenshell.util.selector import Selector
 import json


@@ -48,7 +47,6 @@ class LoadGroups(bpy.types.Operator, tool.Ifc.Operator):
        new = self.props.groups.add()
        new.ifc_definition_id = group.id()
        new.name = group.Name or "Unnamed"
-        new.selection_query = ""
        new.tree_depth = tree_depth
        new.has_children = False
        new.is_expanded = group.id() in self.expanded_groups
@@ -113,7 +111,6 @@ class EditGroup(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.edit_group"
    bl_label = "Edit Group"
    bl_options = {"REGISTER", "UNDO"}
-    copy_from_selector: bpy.props.BoolProperty(name="Copy from Selector", default=False)

    def _execute(self, context):
        props = context.scene.BIMGroupProperties
@@ -124,9 +121,6 @@ class EditGroup(bpy.types.Operator, tool.Ifc.Operator):
            else:
                attributes[attribute.name] = attribute.string_value

-        if self.copy_from_selector:
-            attributes["Description"] = context.scene.IFCSelector.selection_query
-
        self.file = IfcStore.get_file()
        ifcopenshell.api.run(
            "group.edit_group", self.file, **{"group": self.file.by_id(props.active_group_id), "attributes": attributes}
@@ -242,31 +236,6 @@ class SelectGroupProducts(bpy.types.Operator, tool.Ifc.Operator):
        return {"FINISHED"}


-class UpdateGroup(bpy.types.Operator, tool.Ifc.Operator):
-    bl_idname = "bim.update_group"
-    bl_label = "Update Group"
-    bl_options = {"REGISTER", "UNDO"}
-    query: bpy.props.StringProperty()
-    group_id: bpy.props.IntProperty()
-
-    def _execute(self, context):
-        self.file = IfcStore.get_file()
-        group = self.file.by_id(self.group_id)
-        query = self.query
-
-        new_products = Selector.parse(self.file, query)
-        ifcopenshell.api.run(
-            "group.update_group_products",
-            self.file,
-            **{
-                "group": group,
-                "products": new_products,
-            }
-        )
-        bpy.ops.bim.load_groups()
-        return {"FINISHED"}
-
-
 class SelectGroupElements(bpy.types.Operator):
    bl_idname = "bim.select_group_elements"
    bl_label = "Select Group elements"
@@ -44,7 +44,6 @@ class ExpandedGroups(StrProperty):
 class Group(PropertyGroup):
    name: StringProperty(name="Name")
    ifc_definition_id: IntProperty(name="IFC Definition ID")
-    selection_query: StringProperty(name="Selection Query")
    is_expanded: BoolProperty(name="Is Expanded", default=False)
    has_children: BoolProperty(name="Has Children", default=False)
    tree_depth: IntProperty(name="Tree Depth")
@@ -131,7 +131,7 @@ class BIM_UL_groups(UIList):
            else:
                row.label(text="", icon="BLANK1")

-            row.label(text=f"*{item.name}") if item.selection_query != "" else row.label(text=item.name)
+            row.label(text=item.name)
            group_id = item.ifc_definition_id
            if context.scene.BIMGroupProperties.active_group_id == group_id:
                op = row.operator("bim.select_group_products", text="", icon="RESTRICT_SELECT_OFF")
@@ -145,10 +145,6 @@ class BIM_UL_groups(UIList):
                op.group = group_id
                op = row.operator("bim.remove_group", text="", icon="X")
                op.group = group_id
-                if item.selection_query != "":
-                    op = row.operator("bim.update_group", text="", icon="FILE_REFRESH")
-                    op.group_id = item.ifc_definition_id
-                    op.query = item.selection_query
            else:
                op = row.operator("bim.select_group_products", text="", icon="RESTRICT_SELECT_OFF")
                op.group = group_id
@@ -158,10 +154,6 @@ class BIM_UL_groups(UIList):
                op.group = group_id
                op = row.operator("bim.remove_group", text="", icon="X")
                op.group = group_id
-                if item.selection_query != "":
-                    op = row.operator("bim.update_group", text="", icon="FILE_REFRESH")
-                    op.group_id = item.ifc_definition_id
-                    op.query = item.selection_query


 class BIM_UL_object_groups(UIList):
@@ -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):

@@ -24,12 +24,12 @@ classes = (
    operator.AddLayer,
    operator.AddListItem,
    operator.AddMaterial,
+    operator.DuplicateMaterial,
    operator.AddMaterialSet,
    operator.AddProfile,
    operator.AssignMaterial,
    operator.AssignParameterizedProfile,
    operator.ContractMaterialCategory,
-    operator.CopyMaterial,
    operator.DisableEditingAssignedMaterial,
    operator.DisableEditingMaterial,
    operator.DisableEditingMaterialSetItem,
@@ -63,7 +63,6 @@ classes = (
    prop.BIMMaterialProperties,
    prop.BIMObjectMaterialProperties,
    ui.BIM_PT_materials,
-    ui.BIM_PT_material,
    ui.BIM_PT_object_material,
    ui.BIM_UL_materials,
 )
@@ -19,6 +19,7 @@
 import os
 import bpy
 import ifcopenshell
+import ifcopenshell.util.element
 import ifcopenshell.util.doc
 import ifcopenshell.util.schema
 import blenderbim.tool as tool
@@ -35,31 +36,17 @@ class MaterialsData:

    @classmethod
    def load(cls):
-        cls.data = {
-            "total_materials": cls.total_materials(),
-            "material_types": cls.material_types(),
-            "profiles": cls.profiles(),
-            "styles": cls.styles(),
-            "contexts": cls.contexts(),
-            "active_styles": cls.active_styles(),
-        }
        cls.is_loaded = True
+        cls.data["material_types"] = cls.material_types()
+        cls.data["total_materials"] = cls.total_materials()
+        cls.data["profiles"] = cls.profiles()
+        cls.data["styles"] = cls.styles()
+        cls.data["contexts"] = cls.contexts()
+        cls.data["active_styles"] = cls.active_styles()

    @classmethod
    def total_materials(cls):
-        if tool.Ifc.get_schema() == "IFC2X3":
-            return (
-                len(tool.Ifc.get().by_type("IfcMaterial"))
-                + len(tool.Ifc.get().by_type("IfcMaterialLayerSet"))
-                + len(tool.Ifc.get().by_type("IfcMaterialList"))
-            )
-        return (
-            len(tool.Ifc.get().by_type("IfcMaterial"))
-            + len(tool.Ifc.get().by_type("IfcMaterialConstituentSet"))
-            + len(tool.Ifc.get().by_type("IfcMaterialLayerSet"))
-            + len(tool.Ifc.get().by_type("IfcMaterialProfileSet"))
-            + len(tool.Ifc.get().by_type("IfcMaterialList"))
-        )
+        return len(tool.Ifc.get().by_type(bpy.context.scene.BIMMaterialProperties.material_type))

    @classmethod
    def material_types(cls):
@@ -166,6 +153,9 @@ class ObjectMaterialData:
        cls.data["type_material"] = cls.type_material()
        cls.data["material_type"] = cls.material_type()
        cls.data["active_material_constituents"] = cls.active_material_constituents()
+        # after material_name and type_material
+        cls.data["is_type_material_overridden"] = cls.is_type_material_overridden()
+
        cls.is_loaded = True

    @classmethod
@@ -294,8 +284,7 @@ class ObjectMaterialData:

    @classmethod
    def material_name(cls):
-        element = tool.Ifc.get_entity(bpy.context.active_object)
-        material = ifcopenshell.util.element.get_material(element)
+        material = cls.material
        if material:
            return getattr(material, "Name", None) or "Unnamed"

@@ -339,3 +328,18 @@ class ObjectMaterialData:
        if not cls.material or not material.is_a("IfcMaterialConstituentSet"):
            return []
        return [m.Name for m in material.MaterialConstituents if m.Name]
+
+    @classmethod
+    def is_type_material_overridden(cls) -> bool:
+        if not cls.data["type_material"]:
+            return False
+
+        # try to avoid accessing ifc
+        if cls.data["material_name"] != cls.data["type_material"]:
+            return True
+
+        # in theory material can be overridden by the same material
+        # so we check occurrence material explicitly
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        occurrence_material = ifcopenshell.util.element.get_material(element, should_inherit=False)
+        return bool(occurrence_material)
@@ -120,6 +120,8 @@ class AddMaterial(bpy.types.Operator, tool.Ifc.Operator):
    bl_options = {"REGISTER", "UNDO"}
    obj: bpy.props.StringProperty(name="Material Name")
    name: bpy.props.StringProperty(default="Default")
+    category: bpy.props.StringProperty(default="")
+    description: bpy.props.StringProperty(default="")

    def invoke(self, context, event):
        return context.window_manager.invoke_props_dialog(self)
@@ -127,13 +129,41 @@ class AddMaterial(bpy.types.Operator, tool.Ifc.Operator):
    def draw(self, context):
        row = self.layout
        row.prop(self, "name", text="Name")
+        row = self.layout
+        row.prop(self, "description", text="Description")
+        row = self.layout
+        row.prop(self, "category", text="Category")

    def _execute(self, context):
        obj = bpy.data.materials.get(self.obj) if self.obj else None
-        core.add_material(tool.Ifc, tool.Material, tool.Style, obj=obj, name=self.name)
+        core.add_material(tool.Ifc, tool.Material, tool.Style, obj=obj, name=self.name, category=self.category, description=self.description)
        material_prop_purge()


+class DuplicateMaterial(bpy.types.Operator, tool.Ifc.Operator):
+    bl_idname = "bim.duplicate_material"
+    bl_label = "Diplicate Material"
+    bl_options = {"REGISTER", "UNDO"}
+    material: bpy.props.IntProperty(name="Material ID")
+
+    def _execute(self, context):
+        material = tool.Ifc.get().by_id(self.material)
+        new = tool.Ifc.run("material.copy_material", material=material)
+
+        blender_material = tool.Ifc.get_object(material)
+        new_blender = blender_material.copy()
+        new_blender.use_fake_user = True
+        tool.Ifc.link(new, new_blender)
+
+        if not new.is_a("IfcMaterialList"):
+            name = new[0] + " Copy"
+            new[0] = name
+            new_blender.name = name
+
+        material_prop_purge()
+        bpy.ops.bim.load_materials()
+
+
 class AddMaterialSet(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_material_set"
    bl_label = "Add Material Set"
@@ -172,9 +202,10 @@ class UnlinkMaterial(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.unlink_material"
    bl_label = "Unlink Material"
    bl_options = {"REGISTER", "UNDO"}
+    material: bpy.props.IntProperty(name="Material ID")

    def _execute(self, context):
-        core.unlink_material(tool.Ifc, obj=context.active_object.active_material)
+        core.unlink_material(tool.Ifc, obj=tool.Ifc.get_object(tool.Ifc.get().by_id(self.material)))


 class AssignMaterial(bpy.types.Operator, tool.Ifc.Operator):
@@ -531,6 +562,7 @@ class EnableEditingMaterialSetItemProfile(bpy.types.Operator):
    def execute(self, context):
        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
        self.props = obj.BIMObjectMaterialProperties
+        self.props.active_material_set_item_id = self.material_set_item
        self.props.material_set_item_profile_attributes.clear()
        profile = tool.Ifc.get().by_id(self.material_set_item).Profile
        blenderbim.bim.helper.import_attributes2(profile, self.props.material_set_item_profile_attributes)
@@ -546,6 +578,7 @@ class DisableEditingMaterialSetItemProfile(bpy.types.Operator):
    def execute(self, context):
        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
        self.props = obj.BIMObjectMaterialProperties
+        self.props.active_material_set_item_id = 0
        self.props.material_set_item_profile_attributes.clear()
        return {"FINISHED"}

@@ -563,6 +596,7 @@ class EditMaterialSetItemProfile(bpy.types.Operator, tool.Ifc.Operator):
        attributes = blenderbim.bim.helper.export_attributes(self.props.material_set_item_profile_attributes)
        profile = tool.Ifc.get().by_id(self.material_set_item).Profile
        ifcopenshell.api.run("profile.edit_profile", tool.Ifc.get(), profile=profile, attributes=attributes)
+        self.props.active_material_set_item_id = 0
        self.props.material_set_item_profile_attributes.clear()
        model_profile.DumbProfileRegenerator().regenerate_from_profile_def(profile)

@@ -666,45 +700,31 @@ class EditMaterialSetItem(bpy.types.Operator, tool.Ifc.Operator):
        bpy.ops.bim.disable_editing_material_set_item(obj=obj.name)


-class CopyMaterial(bpy.types.Operator, tool.Ifc.Operator):
-    bl_idname = "bim.copy_material"
-    bl_label = "Copy Material"
-    bl_options = {"REGISTER", "UNDO"}
-
-    def _execute(self, context):
-        blender_material = context.active_object.active_material
-        material = tool.Ifc.get_entity(blender_material)
-
-        if tool.Ifc.has_changed_shading(blender_material):
-            blenderbim.core.style.update_style_colours(tool.Ifc, tool.Style, obj=blender_material)
-
-        copied_material = ifcopenshell.api.run("material.copy_material", tool.Ifc.get(), material=material)
-        copied_blender_material = blender_material.copy()
-        copied_style = self.get_style(copied_material)
-        tool.Ifc.link(copied_material, copied_blender_material)
-        if copied_style:
-            tool.Ifc.link(copied_style, copied_blender_material)
-        context.active_object.active_material = copied_blender_material
-
-    def get_style(self, material):
-        for material_representation in material.HasRepresentation:
-            for representation in material_representation.Representations:
-                for item in representation.Items:
-                    for style in item.Styles:
-                        if style.is_a("IfcSurfaceStyle"):
-                            return style
-
-
 class ExpandMaterialCategory(bpy.types.Operator):
    bl_idname = "bim.expand_material_category"
    bl_label = "Expand Material Category"
+    bl_description = "SHIFT+CLICK to expand all material categories"
    bl_options = {"REGISTER", "UNDO"}
    category: bpy.props.StringProperty()
+    expand_all: bpy.props.BoolProperty(name="Expand All", default=False, options={"SKIP_SAVE"})
+
+    def invoke(self, context, event):
+        # Expanding all categories on shift+click.
+        # Make sure to use SKIP_SAVE on property, otherwise it might get stuck.
+        if event.type == "LEFTMOUSE" and event.shift:
+            self.expand_all = True
+        return self.execute(context)

    def execute(self, context):
        props = context.scene.BIMMaterialProperties
-        for category in [c for c in props.materials if c.is_category and c.name == self.category]:
+        for index, category in [
+            (i, c)
+            for i, c in enumerate(props.materials)
+            if c.is_category and (self.expand_all or c.name == self.category)
+        ]:
            category.is_expanded = True
+            if category.name == self.category:
+                props.active_material_index = index
        core.load_materials(tool.Material, props.material_type)
        return {"FINISHED"}

@@ -712,13 +732,28 @@ class ExpandMaterialCategory(bpy.types.Operator):
 class ContractMaterialCategory(bpy.types.Operator):
    bl_idname = "bim.contract_material_category"
    bl_label = "Contract Material Category"
+    bl_description = "SHIFT+CLICK to contract all material categories"
    bl_options = {"REGISTER", "UNDO"}
    category: bpy.props.StringProperty()
+    contract_all: bpy.props.BoolProperty(name="Contract All", default=False, options={"SKIP_SAVE"})
+
+    def invoke(self, context, event):
+        # Contracting all categories on shift+click.
+        # Make sure to use SKIP_SAVE on property, otherwise it might get stuck.
+        if event.type == "LEFTMOUSE" and event.shift:
+            self.contract_all = True
+        return self.execute(context)

    def execute(self, context):
        props = context.scene.BIMMaterialProperties
-        for category in [c for c in props.materials if c.is_category and c.name == self.category]:
+        for index, category in [
+            (i, c)
+            for i, c in enumerate(props.materials)
+            if c.is_category and (self.contract_all or c.name == self.category)
+        ]:
            category.is_expanded = False
+            if category.name == self.category:
+                props.active_material_index = index
        core.load_materials(tool.Material, props.material_type)
        return {"FINISHED"}

@@ -97,6 +97,10 @@ def get_material_types(self, context):
    return MaterialsData.data["material_types"]


+def update_material_type(self, context):
+    MaterialsData.data["total_materials"] = MaterialsData.total_materials()
+
+
 def get_profiles(self, context):
    if not MaterialsData.is_loaded:
        MaterialsData.load()
@@ -119,14 +123,14 @@ class Material(PropertyGroup):
    name: StringProperty(name="Name")
    ifc_definition_id: IntProperty(name="IFC Definition ID")
    is_category: BoolProperty(name="Is Category", default=False)
-    is_expanded: BoolProperty(name="Is Expanded", default=True)
+    is_expanded: BoolProperty(name="Is Expanded", default=False)
    has_style: BoolProperty(name="Has Style", default=True)
    total_elements: IntProperty(name="Total Elements")


 class BIMMaterialProperties(PropertyGroup):
    is_editing: BoolProperty(name="Is Editing", default=False)
-    material_type: EnumProperty(items=get_material_types, name="Material Type")
+    material_type: EnumProperty(items=get_material_types, update=update_material_type, name="Material Type")
    materials: CollectionProperty(name="Materials", type=Material)
    active_material_index: IntProperty(name="Active Material Index")
    profiles: EnumProperty(items=get_profiles, name="Profiles")
@@ -45,7 +45,7 @@ class BIM_PT_materials(Panel):
        self.props = context.scene.BIMMaterialProperties

        row = self.layout.row(align=True)
-        row.label(text="{} Materials".format(MaterialsData.data["total_materials"]), icon="NODE_MATERIAL")
+        row.label(text=f"{MaterialsData.data['total_materials']} Materials", icon="NODE_MATERIAL")
        if self.props.is_editing:
            row.operator("bim.disable_editing_materials", text="", icon="CANCEL")
        else:
@@ -61,12 +61,16 @@ class BIM_PT_materials(Panel):
            if self.props.materials and self.props.active_material_index < len(self.props.materials):
                material = self.props.materials[self.props.active_material_index]
                if material.ifc_definition_id:
+                    op = row.operator("bim.duplicate_material", text="", icon="DUPLICATE")
+                    op.material = material.ifc_definition_id
                    op = row.operator("bim.select_by_material", text="", icon="RESTRICT_SELECT_OFF")
                    op.material = material.ifc_definition_id
                    op = row.operator("bim.enable_editing_material", text="", icon="GREASEPENCIL")
                    op.material = material.ifc_definition_id
                    op = row.operator("bim.enable_editing_material_style", text="", icon="SHADING_RENDERED")
                    op.material = material.ifc_definition_id
+                    op = row.operator("bim.unlink_material", icon="UNLINKED", text="")
+                    op.material = material.ifc_definition_id
                    row.operator("bim.remove_material", text="", icon="X").material = material.ifc_definition_id

            self.draw_editing_ui()
@@ -106,42 +110,20 @@ class BIM_PT_materials(Panel):
        elif self.props.editing_material_type == "STYLE":
            row = self.layout.row(align=True)
            row.prop(self.props, "contexts", text="")
-            row.prop(self.props, "styles", text="")
+            prop_with_search(row, self.props, "styles", text="")
            row = self.layout.row(align=True)
            row.operator("bim.edit_material_style", text="Assign Style", icon="CHECKMARK")
            row.operator("bim.disable_editing_material", text="", icon="CANCEL")


-class BIM_PT_material(Panel):
-    bl_label = "Material"
-    bl_idname = "BIM_PT_material"
-    bl_space_type = "PROPERTIES"
-    bl_region_type = "WINDOW"
-    bl_context = "material"
-
-    @classmethod
-    def poll(cls, context):
-        return IfcStore.get_file() and context.active_object and context.active_object.active_material
-
-    def draw(self, context):
-        row = self.layout.row(align=True)
-        material_id = context.active_object.active_material.BIMObjectProperties.ifc_definition_id
-        if bool(material_id):
-            row.operator("bim.remove_material", icon="X", text="Remove IFC Material").material = material_id
-            row.operator("bim.copy_material", icon="DUPLICATE", text="")
-            row.operator("bim.unlink_material", icon="UNLINKED", text="")
-        else:
-            op = row.operator("bim.add_material", icon="ADD", text="Create IFC Material")
-            op.obj = context.active_object.active_material.name
-
-
 class BIM_PT_object_material(Panel):
    bl_label = "Object Material"
    bl_idname = "BIM_PT_object_material"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "scene"
-    bl_parent_id = "BIM_PT_tab_materials"
+    bl_parent_id = "BIM_PT_tab_object_materials"
+    bl_options = {"HIDE_HEADER"}

    @classmethod
    def poll(cls, context):
@@ -175,7 +157,13 @@ class BIM_PT_object_material(Panel):

        if ObjectMaterialData.data["type_material"]:
            row = self.layout.row(align=True)
-            row.label(text="Inherited Material: " + ObjectMaterialData.data["type_material"], icon="CON_CHILDOF")
+            if ObjectMaterialData.data["is_type_material_overridden"]:
+                row.label(
+                    text=f"Inherited Material Is Occurrence Overridden",
+                    icon="CON_CHILDOF",
+                )
+            else:
+                row.label(text="Inherited Material: " + ObjectMaterialData.data["type_material"], icon="CON_CHILDOF")

        if ObjectMaterialData.data["material_class"]:
            return self.draw_material_ui()
@@ -240,7 +228,7 @@ class BIM_PT_object_material(Panel):

        total_items = len(ObjectMaterialData.data["set_items"])
        for index, set_item in enumerate(ObjectMaterialData.data["set_items"]):
-            if len(self.props.material_set_item_profile_attributes):
+            if len(self.props.material_set_item_profile_attributes) and self.props.active_material_set_item_id == set_item["id"]:
                self.draw_editable_set_item_profile_ui(set_item)
            elif self.props.active_material_set_item_id == set_item["id"]:
                self.draw_editable_set_item_ui(set_item)
@@ -355,7 +343,7 @@ class BIM_UL_materials(UIList):
                    row.operator(
                        "bim.expand_material_category", text="", emboss=False, icon="DISCLOSURE_TRI_RIGHT"
                    ).category = item.name
-                row.label(text=item.name or "Uncategorised")
+                row.label(text=item.name)
            else:
                row.label(text="", icon="BLANK1")
                row.label(text=item.name, icon="MATERIAL")
@@ -23,6 +23,7 @@ import blenderbim.bim.handler
 import blenderbim.tool as tool
 import blenderbim.core.misc as core
 import blenderbim.core.geometry as core_geometry
+import blenderbim.core.root
 from blenderbim.bim.ifc import IfcStore
 from mathutils import Vector, Matrix, Euler

@@ -134,6 +135,10 @@ class ResizeToStorey(bpy.types.Operator, Operator):
 class SplitAlongEdge(bpy.types.Operator, Operator):
    bl_idname = "bim.split_along_edge"
    bl_label = "Split Along Edge"
+    bl_description = (
+        "Active object is considered to be a cutting object."
+        "Will unassign element from a type if type has a representation."
+    )
    bl_options = {"REGISTER", "UNDO"}

    @classmethod
@@ -144,16 +149,25 @@ class SplitAlongEdge(bpy.types.Operator, Operator):
        cutter = context.active_object
        objs = [o for o in context.selected_objects if o != cutter]

+        objs_to_cut = []
        # Splitting only works on meshes
        for obj in objs:
            # You cannot split meshes if the representation is mapped.
            element = tool.Ifc.get_entity(obj)
-            if element:
-                relating_type = tool.Root.get_element_type(element)
-                if relating_type and tool.Root.does_type_have_representations(relating_type):
-                    bpy.ops.bim.unassign_type(related_object=obj.name)
+            if not element:
+                continue

+            relating_type = tool.Root.get_element_type(element)
+            if relating_type and tool.Root.does_type_have_representations(relating_type):
+                bpy.ops.bim.unassign_type(related_object=obj.name)
+
+            # refresh representation
            representation = tool.Geometry.get_active_representation(obj)
+
+            # skip empty objects that might get in the way
+            if not representation:
+                continue
+
            core_geometry.switch_representation(
                tool.Ifc,
                tool.Geometry,
@@ -168,11 +182,13 @@ class SplitAlongEdge(bpy.types.Operator, Operator):
            if not tool.Geometry.is_meshlike(representation):
                bpy.ops.bim.update_representation(obj=obj.name, ifc_representation_class="IfcTessellatedFaceSet")

-        new_objs = tool.Misc.split_objects_with_cutter(objs, cutter)
+            objs_to_cut.append(obj)
+
+        new_objs = tool.Misc.split_objects_with_cutter(objs_to_cut, cutter)
        for obj in new_objs:
            blenderbim.core.root.copy_class(tool.Ifc, tool.Collector, tool.Geometry, tool.Root, obj=obj)
            bpy.ops.bim.update_representation(obj=obj.name)
-        for obj in objs:
+        for obj in objs_to_cut:
            bpy.ops.bim.update_representation(obj=obj.name)

            representation = tool.Geometry.get_active_representation(obj)
@@ -187,6 +203,8 @@ class SplitAlongEdge(bpy.types.Operator, Operator):
                apply_openings=True,
            )

+        self.report({"INFO"}, f"Splitting finished, {len(new_objs)} new objects created.")
+

 class GetConnectedSystemElements(bpy.types.Operator, Operator):
    bl_idname = "bim.get_connected_system_elements"
@@ -22,10 +22,11 @@ import bpy
 class BIM_PT_misc_utilities(bpy.types.Panel):
    bl_idname = "BIM_PT_misc_utilities"
    bl_label = "Miscellaneous"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "output"
    bl_options = {"DEFAULT_CLOSED"}
-    bl_space_type = "VIEW_3D"
-    bl_region_type = "UI"
-    bl_category = "BlenderBIM"
+    bl_parent_id = "BIM_PT_tab_sandbox"

    def draw(self, context):
        layout = self.layout
@@ -83,8 +83,17 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
    def _execute(self, context):
        obj = context.active_object
        element = tool.Ifc.get_entity(obj)
-        data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Data"))[self.item]
        props = obj.BIMArrayProperties
+        
+        relating_obj = props.relating_array_object
+        
+        if relating_obj:
+            element = tool.Ifc.get_entity(relating_obj)
+            parent_globalid = ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Parent")
+            parent_element = tool.Ifc.get().by_guid(parent_globalid)
+            data = json.loads(ifcopenshell.util.element.get_pset(parent_element, "BBIM_Array", "Data"))[self.item]
+        else:
+            data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Data"))[self.item]
        props.count = data["count"]
        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
        props.x = data["x"] * si_conversion
@@ -93,7 +102,9 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
        props.use_local_space = data.get("use_local_space", False)
        props.sync_children = data.get("sync_children", False)
        props.method = data.get("method", "OFFSET")
+        
        props.is_editing = self.item
+        
        return {"FINISHED"}


@@ -137,6 +148,10 @@ class EditArray(bpy.types.Operator, tool.Ifc.Operator):

        tool.Blender.Modifier.Array.set_children_lock_state(element, self.item, True)
        tool.Blender.Modifier.Array.constrain_children_to_parent(element)
+
+        #clears the relating_array_object so it doesn't show again next time
+        props.relating_array_object = None
+        
        return {"FINISHED"}


@@ -193,7 +208,7 @@ class RemoveArray(bpy.types.Operator, tool.Ifc.Operator):

        pset = tool.Ifc.get().by_id(pset["id"])
        if len(data) == 1:
-            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
        else:
            del data[self.item]
            data = tool.Ifc.get().createIfcText(json.dumps(data))
@@ -22,6 +22,7 @@ import ifcopenshell
 import blenderbim.tool as tool
 import blenderbim.core.covering as core

+
 class AddInstanceFlooringCoveringFromCursor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_instance_flooring_covering_from_cursor"
    bl_label = "Add Flooring From Cursor"
@@ -30,26 +31,16 @@ class AddInstanceFlooringCoveringFromCursor(bpy.types.Operator, tool.Ifc.Operato

    @classmethod
    def poll(cls, context):
-        collection = context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
-        return tool.Ifc.get_entity(collection_obj)
+        relating_type_id = int(bpy.data.scenes["Scene"].BIMModelProperties.relating_type_id)
+        relating_type = ifcopenshell.util.element.get_predefined_type(tool.Ifc.get().by_id(relating_type_id))
+        return relating_type == "FLOORING"

    def _execute(self, context):
+        try:
+            core.add_instance_flooring_covering_from_cursor(tool.Ifc, tool.Root, tool.Spatial)
+        except core.NoDefaultContainer:
+            return self.report({"ERROR"}, "Please set a default container to create the covering in.")

-        def msg(self, context):
-            self.layout.label(text="NO ACTIVE STOREY")
-
-        collection = context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
-        if not collection_obj:
-            bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-            return
-        spatial_element = tool.Ifc.get_entity(collection_obj)
-        if not spatial_element:
-            bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-            return
-
-        core.add_instance_flooring_covering_from_cursor(tool.Ifc, tool.Spatial, tool.Model, tool.Type, tool.Geometry)

 class AddInstanceCeilingCoveringFromCursor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_instance_ceiling_covering_from_cursor"
@@ -59,26 +50,16 @@ class AddInstanceCeilingCoveringFromCursor(bpy.types.Operator, tool.Ifc.Operator

    @classmethod
    def poll(cls, context):
-        collection = context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
-        return tool.Ifc.get_entity(collection_obj)
+        relating_type_id = int(bpy.data.scenes["Scene"].BIMModelProperties.relating_type_id)
+        relating_type = ifcopenshell.util.element.get_predefined_type(tool.Ifc.get().by_id(relating_type_id))
+        return relating_type == "CEILING"

    def _execute(self, context):
+        try:
+            core.add_instance_ceiling_covering_from_cursor(tool.Ifc, tool.Root, tool.Covering, tool.Spatial)
+        except core.NoDefaultContainer:
+            return self.report({"ERROR"}, "Please set a default container to create the covering in.")

-        def msg(self, context):
-            self.layout.label(text="NO ACTIVE STOREY")
-
-        collection = context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
-        if not collection_obj:
-            bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-            return
-        spatial_element = tool.Ifc.get_entity(collection_obj)
-        if not spatial_element:
-            bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-            return
-
-        core.add_instance_ceiling_covering_from_cursor(tool.Ifc, tool.Spatial, tool.Model, tool.Type, tool.Geometry, tool.Covering)

 class RegenSelectedCoveringObject(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.regen_selected_covering_object"
@@ -88,37 +69,31 @@ class RegenSelectedCoveringObject(bpy.types.Operator, tool.Ifc.Operator):

    @classmethod
    def poll(cls, context):
-        active_obj = bpy.context.active_object
-        element = tool.Ifc.get_entity(active_obj)
+        element = tool.Ifc.get_entity(bpy.context.active_object)
        return element and element.is_a("IfcCovering")

    def _execute(self, context):
-
-        def msg(self, context):
-            self.layout.label(text="NO ACTIVE STOREY")
-
-        active_obj = bpy.context.active_object
-        element = tool.Ifc.get_entity(active_obj)
-        if not  element.is_a("IfcCovering"):
-            bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-            return
-
-        core.regen_selected_covering_object(tool.Ifc, tool.Spatial, tool.Model, tool.Type, tool.Geometry)
+        try:
+            core.regen_selected_covering_object(tool.Root, tool.Spatial)
+        except core.NoDefaultContainer:
+            return self.report({"ERROR"}, "Please set a default container to create the covering in.")


 class AddInstanceFlooringCoveringsFromWalls(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_instance_flooring_coverings_from_walls"
    bl_label = "Add Flooring From Walls"
    bl_options = {"REGISTER", "UNDO"}
-    bl_description = "Add instance flooring coverings from selected walls. The active object must be a wall and layered vertically"
+    bl_description = (
+        "Add instance flooring coverings from selected walls. The active object must be a wall and layered vertically"
+    )

    @classmethod
    def poll(cls, context):
-        active_obj = bpy.context.active_object
-        element = tool.Ifc.get_entity(active_obj)
-        if element:
-            if element.is_a("IfcWall") and tool.Model.get_usage_type(element) == "LAYER2":
-                return context.selected_objects
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        relating_type_id = int(bpy.data.scenes["Scene"].BIMModelProperties.relating_type_id)
+        relating_type = ifcopenshell.util.element.get_predefined_type(tool.Ifc.get().by_id(relating_type_id))
+        if element and element.is_a("IfcWall") and tool.Model.get_usage_type(element) == "LAYER2":
+            return context.selected_objects and relating_type == "FLOORING"

    def _execute(self, context):
        # This only works based on a 2D plan only considering the standard
@@ -126,38 +101,27 @@ class AddInstanceFlooringCoveringsFromWalls(bpy.types.Operator, tool.Ifc.Operato
        # In order to run, the active object must be a wall and
        # there must be selected walls

-        active_obj = bpy.context.active_object
-        if not active_obj:
-            self.report({"ERROR"}, "No active object. Please select a wall")
-            return
+        try:
+            core.add_instance_flooring_coverings_from_walls(tool.Root, tool.Spatial)
+        except core.NoDefaultContainer:
+            return self.report({"ERROR"}, "Please set a default container to create the covering in.")

-        element = tool.Ifc.get_entity(active_obj)
-        if element and not element.is_a("IfcWall"):
-            return self.report({"ERROR"}, "The active object is not a wall. Please select a wall.")
-
-        container = ifcopenshell.util.element.get_container(element)
-        if not container:
-            self.report({"ERROR"}, "The wall is not contained.")
-
-        if not bpy.context.selected_objects:
-            self.report({"ERROR"}, "No selected objects found. Please select walls.")
-            return
-
-        core.add_instance_flooring_coverings_from_walls(tool.Ifc, tool.Spatial, tool.Collector, tool.Geometry)

 class AddInstanceCeilingCoveringsFromWalls(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_instance_ceiling_coverings_from_walls"
-    bl_label = "Add Ceilings From Walls"
+    bl_label = "Add Ceiling From Walls"
    bl_options = {"REGISTER", "UNDO"}
-    bl_description = "Add instance ceiling coverings from selected walls. The active object must be a wall and layered vertically"
+    bl_description = (
+        "Add instance ceiling coverings from selected walls. The active object must be a wall and layered vertically"
+    )

    @classmethod
    def poll(cls, context):
-        active_obj = bpy.context.active_object
-        element = tool.Ifc.get_entity(active_obj)
-        if element:
-            if element.is_a("IfcWall") and tool.Model.get_usage_type(element) == "LAYER2":
-                return context.selected_objects
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        relating_type_id = int(bpy.data.scenes["Scene"].BIMModelProperties.relating_type_id)
+        relating_type = ifcopenshell.util.element.get_predefined_type(tool.Ifc.get().by_id(relating_type_id))
+        if element and element.is_a("IfcWall") and tool.Model.get_usage_type(element) == "LAYER2":
+            return context.selected_objects and relating_type == "CEILING"

    def _execute(self, context):
        # This only works based on a 2D plan only considering the standard
@@ -165,22 +129,7 @@ class AddInstanceCeilingCoveringsFromWalls(bpy.types.Operator, tool.Ifc.Operator
        # In order to run, the active object must be a wall and
        # there must be selected walls

-        active_obj = bpy.context.active_object
-        if not active_obj:
-            self.report({"ERROR"}, "No active object. Please select a wall")
-            return
-
-        element = tool.Ifc.get_entity(active_obj)
-        if element and not element.is_a("IfcWall"):
-            return self.report({"ERROR"}, "The active object is not a wall. Please select a wall.")
-
-        container = ifcopenshell.util.element.get_container(element)
-        if not container:
-            self.report({"ERROR"}, "The wall is not contained.")
-
-        if not bpy.context.selected_objects:
-            self.report({"ERROR"}, "No selected objects found. Please select walls.")
-            return
-
-        core.add_instance_ceiling_coverings_from_walls(tool.Ifc, tool.Spatial, tool.Collector, tool.Geometry, tool.Covering)
-
+        try:
+            core.add_instance_ceiling_coverings_from_walls(tool.Root, tool.Spatial, tool.Covering)
+        except core.NoDefaultContainer:
+            return self.report({"ERROR"}, "Please set a default container to create the covering in.")
@@ -53,7 +53,7 @@ class AuthoringData:
        cls.data["ifc_element_type"] = cls.ifc_element_type
        cls.data["ifc_classes"] = cls.ifc_classes()
        cls.data["relating_type_id"] = cls.relating_type_id()  # only after .ifc_classes()
-        cls.data["predefined_type"] = cls.predefined_type()
+        cls.data["predefined_type"] = cls.predefined_type() # only after .relating_type_id()
        cls.data["type_class"] = cls.type_class()

        # only after .type_class()
@@ -121,9 +121,10 @@ class AuthoringData:
    def type_thumbnail(cls):
        if not cls.data["relating_type_id"]:
            return 0
-        if not tool.Blender.enum_property_has_valid_index(cls.props, "relating_type_id", cls.data["relating_type_id"]):
+        relating_type_id = tool.Blender.get_enum_safe(cls.props, "relating_type_id")
+        if relating_type_id is None:
            return 0
-        element = tool.Ifc.get().by_id(int(cls.props.relating_type_id))
+        element = tool.Ifc.get().by_id(int(relating_type_id))
        return cls.type_thumbnails.get(element.id(), None) or 0

    @classmethod
@@ -251,8 +252,8 @@ class AuthoringData:

    @classmethod
    def predefined_type(cls):
-        relating_type_id = cls.props.relating_type_id
-        if not relating_type_id:
+        relating_type_id = tool.Blender.get_enum_safe(cls.props, "relating_type_id")
+        if relating_type_id is None:
            return
        relating_type = tool.Ifc.get().by_id(int(relating_type_id))
        if not hasattr(relating_type, "PredefinedType"):
@@ -22,20 +22,24 @@ import bmesh
 from bmesh.types import BMVert, BMFace

 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.element
+import ifcopenshell.util.representation
 from ifcopenshell.util.shape_builder import V
 import blenderbim
 import blenderbim.tool as tool
+import blenderbim.core.geometry
 import blenderbim.core.geometry as core
-from blenderbim.bim.module.model.window import create_bm_window, create_bm_box, update_simple_openings
+import blenderbim.core.root
+from blenderbim.bim.module.model.window import create_bm_window, create_bm_box

 from mathutils import Vector, Matrix
-from pprint import pprint

 import json
 import collections


-def update_door_modifier_representation(context, obj):
+def update_door_modifier_representation(context: bpy.types.Context, obj: bpy.types.Object) -> None:
    props = obj.BIMDoorProperties
    element = tool.Ifc.get_entity(obj)
    ifc_file = tool.Ifc.get()
@@ -159,7 +163,7 @@ def update_door_modifier_representation(context, obj):
        occurrence.OverallWidth = props.overall_width / si_conversion
        occurrence.OverallHeight = props.overall_height / si_conversion

-    update_simple_openings(element, props.overall_width / si_conversion, props.overall_height / si_conversion)
+    tool.Model.update_simple_openings(element)


 # TODO: move it out to tools
@@ -504,8 +508,6 @@ class BIM_OT_add_door(bpy.types.Operator, tool.Ifc.Operator):
        mesh = bpy.data.meshes.new("IfcDoor")
        obj = bpy.data.objects.new("IfcDoor", mesh)
        obj.location = spawn_location
-        collection = context.view_layer.active_layer_collection.collection
-        collection.objects.link(obj)

        element = blenderbim.core.root.assign_class(
            tool.Ifc, tool.Collector, tool.Root, obj=obj, ifc_class="IfcDoor", should_add_representation=False
@@ -644,6 +646,6 @@ class RemoveDoor(bpy.types.Operator, tool.Ifc.Operator):
        obj.BIMDoorProperties.is_editing = False

        pset = tool.Pset.get_element_pset(element, "BBIM_Door")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)

        return {"FINISHED"}
@@ -28,23 +28,9 @@ def add_object(self, context):
    obj = bpy.data.objects.new("Grid", None)
    obj.name = "Grid"

-    collection = context.view_layer.active_layer_collection.collection
-    site = tool.Ifc.get().by_type("IfcSite")
-    if site:
-        site = site[0]
-        site_obj = tool.Ifc.get_object(site)
-        if site_obj:
-            collection = site_obj.BIMObjectProperties.collection or collection
-
-    collection.objects.link(obj)
-
    bpy.ops.bim.assign_class(obj=obj.name, ifc_class="IfcGrid")
    grid = tool.Ifc.get_entity(obj)

-    collection = obj.BIMObjectProperties.collection or collection
-
-    axes_collection = bpy.data.collections.new("UAxes")
-    collection.children.link(axes_collection)
    for i in range(0, self.total_u):
        verts = [
            Vector((-2, i * self.u_spacing, 0)),
@@ -57,19 +43,13 @@ def add_object(self, context):
        tag = chr(ord("A") + i)
        obj = bpy.data.objects.new(f"IfcGridAxis/{tag}", mesh)

-        axes_collection.objects.link(obj)
-
        result = ifcopenshell.api.run(
-            "grid.create_grid_axis",
-            tool.Ifc.get(),
-            **{"axis_tag": tag, "uvw_axes": "UAxes", "grid": grid},
+            "grid.create_grid_axis", tool.Ifc.get(), axis_tag=tag, uvw_axes="UAxes", grid=grid
        )
        tool.Ifc.link(result, obj)
-        ifcopenshell.api.run("grid.create_axis_curve", tool.Ifc.get(), **{"axis_curve": obj, "grid_axis": result})
-        obj.BIMObjectProperties.ifc_definition_id = result.id()
+        ifcopenshell.api.run("grid.create_axis_curve", tool.Ifc.get(), axis_curve=obj, grid_axis=result)
+        tool.Collector.assign(obj)

-    axes_collection = bpy.data.collections.new("VAxes")
-    collection.children.link(axes_collection)
    for i in range(0, self.total_v):
        verts = [
            Vector((i * self.v_spacing, -2, 0)),
@@ -82,16 +62,12 @@ def add_object(self, context):
        tag = str(i + 1).zfill(2)
        obj = bpy.data.objects.new(f"IfcGridAxis/{tag}", mesh)

-        axes_collection.objects.link(obj)
-
        result = ifcopenshell.api.run(
-            "grid.create_grid_axis",
-            tool.Ifc.get(),
-            **{"axis_tag": tag, "uvw_axes": "VAxes", "grid": grid},
+            "grid.create_grid_axis", tool.Ifc.get(), axis_tag=tag, uvw_axes="VAxes", grid=grid
        )
        tool.Ifc.link(result, obj)
-        ifcopenshell.api.run("grid.create_axis_curve", tool.Ifc.get(), **{"axis_curve": obj, "grid_axis": result})
-        obj.BIMObjectProperties.ifc_definition_id = result.id()
+        ifcopenshell.api.run("grid.create_axis_curve", tool.Ifc.get(), axis_curve=obj, grid_axis=result)
+        tool.Collector.assign(obj)


 class BIM_OT_add_object(Operator, tool.Ifc.Operator):
@@ -243,7 +243,6 @@ class MEPGenerator:

    def setup_ports(self, obj):
        self.file = tool.Ifc.get()
-        self.collection = bpy.context.view_layer.active_layer_collection.collection

        segment = tool.Ifc.get_entity(obj)
        representation = ifcopenshell.util.representation.get_representation(segment, "Model", "Body", "MODEL_VIEW")
@@ -44,6 +44,7 @@ from bpy.types import SpaceView3D
 from bpy.props import FloatProperty
 from bpy_extras.object_utils import AddObjectHelper, object_data_add
 from gpu_extras.batch import batch_for_shader
+from typing import Union, Optional, Any


 class AddFilledOpening(bpy.types.Operator, tool.Ifc.Operator):
@@ -59,9 +60,15 @@ class AddFilledOpening(bpy.types.Operator, tool.Ifc.Operator):


 class FilledOpeningGenerator:
-    def generate(self, filling_obj, voided_obj, target=None):
+    def generate(
+        self,
+        filling_obj: Union[bpy.types.Object, None],
+        voided_obj: Union[bpy.types.Object, None],
+        target: Optional[Vector] = None,
+    ) -> None:
        props = bpy.context.scene.BIMModelProperties
        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+        opening_thickness_si = 0.0

        filling = tool.Ifc.get_entity(filling_obj)
        element = tool.Ifc.get_entity(voided_obj)
@@ -92,6 +99,7 @@ class FilledOpeningGenerator:
            # In this prototype, we assume openings are only added to axis-based elements
            layers = tool.Model.get_material_layer_parameters(element)
            if layers["layer_set_direction"] == "AXIS2":
+                opening_thickness_si = layers["thickness"] * 2
                axis = tool.Model.get_wall_axis(voided_obj, layers=layers)["base"]
                new_matrix = voided_obj.matrix_world.copy()
                point_on_axis = tool.Cad.point_on_edge(target, axis)
@@ -122,44 +130,37 @@ class FilledOpeningGenerator:

        existing_opening_occurrence = self.get_existing_opening_occurrence_if_any(filling)

-        if existing_opening_occurrence:
-            opening = ifcopenshell.api.run(
-                "root.create_entity",
-                tool.Ifc.get(),
-                ifc_class="IfcOpeningElement",
-                predefined_type="OPENING",
-                name="Opening",
-            )
-            ifcopenshell.api.run(
-                "geometry.edit_object_placement", tool.Ifc.get(), product=opening, matrix=filling_obj.matrix_world
-            )
+        opening = ifcopenshell.api.run(
+            "root.create_entity",
+            tool.Ifc.get(),
+            ifc_class="IfcOpeningElement",
+            predefined_type="OPENING",
+            name="Opening",
+        )
+        ifcopenshell.api.run(
+            "geometry.edit_object_placement",
+            tool.Ifc.get(),
+            product=opening,
+            matrix=np.array(filling_obj.matrix_world),
+            is_si=True,
+        )

+        if existing_opening_occurrence:
            representation = ifcopenshell.util.representation.get_representation(
                existing_opening_occurrence, "Model", "Body", "MODEL_VIEW"
            )
            representation = ifcopenshell.util.representation.resolve_representation(representation)
-            mapped_representation = ifcopenshell.api.run(
-                "geometry.map_representation", tool.Ifc.get(), representation=representation
-            )
-            ifcopenshell.api.run(
-                "geometry.assign_representation", tool.Ifc.get(), product=opening, representation=mapped_representation
-            )
        else:
-            representation = self.generate_opening_from_filling(filling, filling_obj)
-            opening = ifcopenshell.api.run(
-                "root.create_entity", tool.Ifc.get(), ifc_class="IfcOpeningElement", predefined_type="OPENING"
+            representation = self.generate_opening_from_filling(
+                filling, filling_obj, opening_thickness_si=opening_thickness_si
            )

-            matrix = np.array(filling_obj.matrix_world)
-            ifcopenshell.api.run(
-                "geometry.edit_object_placement", tool.Ifc.get(), product=opening, matrix=matrix, is_si=True
-            )
-            mapped_representation = ifcopenshell.api.run(
-                "geometry.map_representation", tool.Ifc.get(), representation=representation
-            )
-            ifcopenshell.api.run(
-                "geometry.assign_representation", tool.Ifc.get(), product=opening, representation=mapped_representation
-            )
+        mapped_representation = ifcopenshell.api.run(
+            "geometry.map_representation", tool.Ifc.get(), representation=representation
+        )
+        ifcopenshell.api.run(
+            "geometry.assign_representation", tool.Ifc.get(), product=opening, representation=mapped_representation
+        )

        ifcopenshell.api.run("void.add_opening", tool.Ifc.get(), opening=opening, element=element)
        ifcopenshell.api.run("void.add_filling", tool.Ifc.get(), opening=opening, element=filling)
@@ -187,7 +188,7 @@ class FilledOpeningGenerator:
                    should_sync_changes_first=False,
                )

-    def regenerate_from_type(self, usecase_path, ifc_file, settings):
+    def regenerate_from_type(self, usecase_path: str, ifc_file: ifcopenshell.file, settings: dict[str, Any]) -> None:
        relating_type = settings["relating_type"]

        for related_object in settings["related_objects"]:
@@ -252,10 +253,15 @@ class FilledOpeningGenerator:
                should_sync_changes_first=False,
            )

-    def generate_opening_from_filling(self, filling, filling_obj):
+    def generate_opening_from_filling(
+        self,
+        filling: ifcopenshell.entity_instance,
+        filling_obj: bpy.types.Object,
+        opening_thickness_si: float = 0.0,
+    ) -> ifcopenshell.entity_instance:
        # Since openings are reused later, we give a default thickness of 1.2m
        # which should cover the majority of curved, or super thick walls.
-        thickness = 1.2
+        thickness = max(1.2, opening_thickness_si)
        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
        shape_builder = ifcopenshell.util.shape_builder.ShapeBuilder(tool.Ifc.get())

@@ -285,7 +291,7 @@ class FilledOpeningGenerator:
                    return tool.Ifc.get().createIfcIndexedPolyCurve(Points=ifc_points, Segments=ifc_segments)

                settings = ifcopenshell.geom.settings()
-                settings.set(settings.INCLUDE_CURVES, True)
+                settings.set("dimensionality", ifcopenshell.ifcopenshell_wrapper.CURVES_SURFACES_AND_SOLIDS)
                geometry = ifcopenshell.geom.create_shape(settings, profile)
                verts = ifcopenshell.util.shape.get_vertices(geometry)
                # [0, 2] represents X and Z ordinates
@@ -346,7 +352,9 @@ class FilledOpeningGenerator:
                return True
        return False

-    def get_existing_opening_occurrence_if_any(self, filling):
+    def get_existing_opening_occurrence_if_any(
+        self, filling: ifcopenshell.entity_instance
+    ) -> Union[ifcopenshell.entity_instance, None]:
        filling_type = ifcopenshell.util.element.get_type(filling)
        if filling_type:
            filling_occurrences = ifcopenshell.util.element.get_types(filling_type)
@@ -39,6 +39,7 @@ from mathutils import Vector, Matrix
 from bpy_extras.object_utils import AddObjectHelper
 from . import prop
 import json
+from typing import Any, Union


 class EnableAddType(bpy.types.Operator, tool.Ifc.Operator):
@@ -137,7 +138,10 @@ class AddConstrTypeInstance(bpy.types.Operator):
        if not relating_type_id:
            return {"FINISHED"}

-        if self.from_invoke:
+        # Check relating_type_id enum_items since it's possible
+        # that we're adding e.g. IfcRoofType being in a Slab Tool
+        # and roof type id won't be present in the relating_type_id enum.
+        if self.from_invoke and str(self.relating_type_id) in AuthoringData.data["relating_type_id"]:
            props.relating_type_id = str(self.relating_type_id)

        relating_type = tool.Ifc.get().by_id(int(relating_type_id))
@@ -188,9 +192,9 @@ class AddConstrTypeInstance(bpy.types.Operator):

        obj.location = context.scene.cursor.location

-        collection = context.view_layer.active_layer_collection.collection
-        collection.objects.link(obj)
-        collection_obj = collection.BIMCollectionProperties.obj
+        self.container_obj = None
+        if container := tool.Root.get_default_container():
+            self.container_obj = tool.Ifc.get_object(container)

        bpy.ops.bim.assign_class(obj=obj.name, ifc_class=instance_class)
        tool.Blender.remove_data_block(mesh)  # Remove "Instance" mesh
@@ -244,11 +248,11 @@ class AddConstrTypeInstance(bpy.types.Operator):
                # TODO For now we are hardcoding windows and doors as a prototype
                bpy.ops.bim.add_filled_opening(voided_obj=building_obj.name, filling_obj=obj.name)
        else:
-            if collection_obj and tool.Ifc.get_entity(collection_obj):
+            if self.container_obj:
                if props.rl_mode == "BOTTOM":
-                    obj.location.z = collection_obj.location.z - tool.Blender.get_object_bounding_box(obj)["min_z"]
+                    obj.location.z = self.container_obj.location.z - tool.Blender.get_object_bounding_box(obj)["min_z"]
                elif props.rl_mode == "CONTAINER":
-                    obj.location.z = collection_obj.location.z
+                    obj.location.z = self.container_obj.location.z
                elif props.rl_mode == "CURSOR":
                    pass

@@ -270,11 +274,8 @@ class AddConstrTypeInstance(bpy.types.Operator):
        return {"FINISHED"}

    def set_flow_segment_rl(self, obj):
-        collection = bpy.context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
-
-        if collection_obj and tool.Ifc.get_entity(collection_obj):
-            obj.location[2] = collection_obj.location[2] + bpy.context.scene.BIMModelProperties.rl2
+        if self.container_obj:
+            obj.location[2] = self.container_obj.location[2] + bpy.context.scene.BIMModelProperties.rl2

    @staticmethod
    def generate_layered_element(ifc_class: str, relating_type: ifcopenshell.entity_instance) -> bool:
@@ -511,7 +512,7 @@ def regenerate_profile_usage(usecase_path, ifc_file, settings):
            )


-def ensure_material_assigned(usecase_path, ifc_file, settings):
+def ensure_material_assigned(usecase_path: str, ifc_file: ifcopenshell.file, settings: dict[str, Any]) -> None:
    if usecase_path == "material.assign_material":
        if not settings.get("material", None):
            return
@@ -524,53 +525,76 @@ def ensure_material_assigned(usecase_path, ifc_file, settings):
            ]:
                elements.extend(rel.RelatedObjects)

-    for element in elements:
-        obj = IfcStore.get_element(element.GlobalId)
-        if not obj or not obj.data:
-            continue
-
-        element_material = ifcopenshell.util.element.get_material(element)
-        material = [m for m in ifc_file.traverse(element_material) if m.is_a("IfcMaterial")]
-
-        object_material_ids = [
-            om.BIMObjectProperties.ifc_definition_id
-            for om in obj.data.materials
-            if om is not None and om.BIMObjectProperties.ifc_definition_id
-        ]
-
-        if material and material[0].id() in object_material_ids:
-            continue
-
-        if len(obj.data.materials) == 1:
-            obj.data.materials.clear()
-
-        if not material:
-            continue
-
-        obj.data.materials.append(IfcStore.get_element(material[0].id()))
+    update_blender_ifc_materials(elements)


-def ensure_material_unassigned(usecase_path, ifc_file, settings):
+def ensure_material_unassigned(usecase_path: str, ifc_file: ifcopenshell.file, settings: dict[str, Any]) -> None:
    elements = settings["products"]
    if elements[0].is_a("IfcElementType"):
        elements.extend(ifcopenshell.util.element.get_types(elements[0]))
+    update_blender_ifc_materials(elements)
+
+
+def update_blender_ifc_materials(elements: list[ifcopenshell.entity_instance]) -> None:
+    """update mesh blender materials that have ifc material connected to them
+    by replacing them with `blender_material`"""
+    # since different elements can share meshes (e.g. occurrecnes without openings)
+    # we need to make sure not to affect them accidentally
+    meshes_users: dict[bpy.types.Mesh, set[bpy.types.Object]] = dict()
+    for obj in bpy.data.objects:
+        if not obj.data:
+            continue
+        meshes_users.setdefault(obj.data, set()).add(obj)
+
+    objects: set[bpy.types.Object] = set()
    for element in elements:
-        obj = tool.Ifc.get_object(element)
+        obj: bpy.types.Object = tool.Ifc.get_object(element)
        if not obj or not obj.data:
            continue
-        element_material = ifcopenshell.util.element.get_material(element)
-        if element_material:
+        objects.add(obj)
+
+    meshes: set[bpy.types.Mesh] = {obj.data for obj in objects}
+
+    for mesh in meshes:
+        mesh_users = meshes_users[mesh]
+        if not mesh_users.issubset(objects):
            continue
-        to_remove = []
-        for i, slot in enumerate(obj.material_slots):
-            if not slot.material:
+
+        # NOTE: we need `obj` as removing materials and appending them to `mesh.materials`
+        # will mess up mesh faces material indices
+
+        # NOTE: we make an assumption here that all mesh users
+        # have the same material - they either inherit it from the type
+        # or type doesn't have a material.
+        #
+        # If we add option to UI to add materials overriding type materials
+        # then this assumption won't be safe anymore
+
+        obj = next(iter(mesh_users))
+        element = tool.Ifc.get_entity(obj)
+        current_material = ifcopenshell.util.element.get_material(element)
+        if current_material:
+            current_material = tool.Ifc.get_object(current_material)
+
+        material_replaced = False
+
+        for material_slot in obj.material_slots:
+            material = material_slot.material
+            if material is None:
                continue
-            material = tool.Ifc.get_entity(slot.material)
-            if material:
-                to_remove.append(i)
-        total_removed = 0
-        for i in to_remove:
-            obj.active_material_index = i - total_removed
-            with bpy.context.temp_override(object=obj):
-                bpy.ops.object.material_slot_remove()
-            total_removed += 1
+            ifc_material = tool.Ifc.get_entity(material)
+            # it's blender material for style, so ignore it
+            if not ifc_material:
+                continue
+            if ifc_material == current_material:
+                continue
+            material_slot.material = current_material
+            material_replaced = True
+
+        if not material_replaced and current_material:
+            mesh.materials.append(current_material)
+
+        # clear empty slots
+        for i, material in reversed(list(enumerate(mesh.materials[:]))):
+            if material is None:
+                mesh.materials.pop(index=i)
@@ -57,8 +57,10 @@ class DumbProfileGenerator:
        self.body_context = ifcopenshell.util.representation.get_context(tool.Ifc.get(), "Model", "Body", "MODEL_VIEW")
        self.axis_context = ifcopenshell.util.representation.get_context(tool.Ifc.get(), "Model", "Axis", "GRAPH_VIEW")
        props = bpy.context.scene.BIMModelProperties
-        self.collection = bpy.context.view_layer.active_layer_collection.collection
-        self.collection_obj = self.collection.BIMCollectionProperties.obj
+        self.container = None
+        if container := tool.Root.get_default_container():
+            self.container = container
+            self.container_obj = tool.Ifc.get_object(container)
        self.depth = props.extrusion_depth
        self.rotation = 0
        self.location = Vector((0, 0, 0))
@@ -83,9 +85,8 @@ class DumbProfileGenerator:
        ):
            matrix_world = Matrix.Rotation(pi / 2, 4, "Z") @ Matrix.Rotation(pi / 2, 4, "X") @ matrix_world
        matrix_world.translation = self.location
-        if self.collection_obj and self.collection_obj.BIMObjectProperties.ifc_definition_id:
-            matrix_world.translation.z = self.collection_obj.location.z
-        self.collection.objects.link(obj)
+        if self.container_obj:
+            matrix_world.translation.z = self.container_obj.location.z

        element = blenderbim.core.root.assign_class(
            tool.Ifc,
@@ -94,7 +95,6 @@ class DumbProfileGenerator:
            obj=obj,
            ifc_class=ifc_class,
            should_add_representation=False,
-            context=self.body_context,
        )
        ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=self.relating_type)

@@ -931,13 +931,11 @@ class PatchNonParametricMepSegment(bpy.types.Operator, tool.Ifc.Operator):
        return context.active_object

    def _execute(self, context):
-        styles = tool.Geometry.get_styles(context.active_object)
        blenderbim.core.material.patch_non_parametric_mep_segment(
            tool.Ifc, tool.Material, tool.Profile, obj=context.active_object
        )
        bpy.ops.bim.enable_editing_extrusion_axis()
        bpy.ops.bim.edit_extrusion_axis()
-        styles = tool.Geometry.get_styles(context.active_object)


 class EnableEditingExtrusionAxis(bpy.types.Operator, tool.Ifc.Operator):
@@ -60,7 +60,7 @@ def update_ifc_class(self, context):
    bpy.ops.bim.load_type_thumbnails(ifc_class=self.ifc_class)
    AuthoringData.data["relating_type_id"] = AuthoringData.relating_type_id()
    AuthoringData.data["type_thumbnail"] = AuthoringData.type_thumbnail()
-    if not tool.Blender.enum_property_has_valid_index(self, "relating_type_id", AuthoringData.data["relating_type_id"]):
+    if tool.Blender.get_enum_safe(self, "relating_type_id") is None:
        self["relating_type_id"] = 0


@@ -87,6 +87,21 @@ def update_type_page(self, context):
    AuthoringData.data["paginated_relating_types"] = AuthoringData.paginated_relating_types()


+def update_relating_array_from_object(self, context):
+    bpy.ops.bim.enable_editing_array(item=self.is_editing)
+    return
+
+
+def is_object_array_applicable(self, obj):
+    element = tool.Ifc.get_entity(obj)
+    if not element:
+        return False
+    return ifcopenshell.util.element.get_pset(element, "BBIM_Array")
+
+
+
+
+
 class BIMModelProperties(PropertyGroup):
    ifc_class: bpy.props.EnumProperty(items=get_ifc_class, name="Construction Class", update=update_ifc_class)
    relating_type_id: bpy.props.EnumProperty(
@@ -203,6 +218,14 @@ class BIMArrayProperties(PropertyGroup):
        description="Regenerate all children based on the parent object",
        default=False,
    )
+    relating_array_object: bpy.props.PointerProperty(
+        type=bpy.types.Object,
+        name="Copy Array Properties",
+        update=update_relating_array_from_object,
+        poll=is_object_array_applicable,
+    )
+
+


 class BIMStairProperties(PropertyGroup):
@@ -20,8 +20,12 @@
 import bpy
 import bmesh
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.representation
+import ifcopenshell.util.unit
 from ifcopenshell.util.shape_builder import V
 import blenderbim
+import blenderbim.core.root
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.model.door import bm_sort_out_geom
@@ -295,8 +299,6 @@ class BIM_OT_add_railing(bpy.types.Operator, tool.Ifc.Operator):
        mesh = bpy.data.meshes.new("IfcRailing")
        obj = bpy.data.objects.new("IfcRailing", mesh)
        obj.location = spawn_location
-        collection = context.view_layer.active_layer_collection.collection
-        collection.objects.link(obj)

        body_context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
        blenderbim.core.root.assign_class(
@@ -535,5 +537,5 @@ class RemoveRailing(bpy.types.Operator, tool.Ifc.Operator):
        obj.BIMRailingProperties.is_editing = False

        pset = tool.Pset.get_element_pset(element, "BBIM_Railing")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
        return {"FINISHED"}
@@ -20,7 +20,11 @@ import bpy
 import bmesh

 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.representation
+import ifcopenshell.util.unit
 import blenderbim
+import blenderbim.core.root
 import blenderbim.tool as tool
 from blenderbim.bim.helper import convert_property_group_from_si
 from blenderbim.bim.module.model.door import bm_sort_out_geom
@@ -511,8 +515,6 @@ class BIM_OT_add_roof(bpy.types.Operator, tool.Ifc.Operator):
        mesh = bpy.data.meshes.new("IfcRoof")
        obj = bpy.data.objects.new("IfcRoof", mesh)
        obj.location = spawn_location
-        collection = context.view_layer.active_layer_collection.collection
-        collection.objects.link(obj)

        body_context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
        blenderbim.core.root.assign_class(
@@ -757,7 +759,7 @@ class RemoveRoof(bpy.types.Operator, tool.Ifc.Operator):
        obj.BIMRoofProperties.is_editing = False

        pset = tool.Pset.get_element_pset(element, "BBIM_Roof")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
        return {"FINISHED"}


@@ -31,7 +31,6 @@ import blenderbim.core.type
 import blenderbim.core.geometry
 import blenderbim.core.root
 import blenderbim.tool as tool
-from math import radians
 from mathutils import Vector, Matrix
 from blenderbim.bim.module.geometry.helper import Helper
 from blenderbim.bim.module.model.decorator import ProfileDecorator
@@ -137,8 +136,10 @@ class DumbSlabGenerator:
        )

        props = bpy.context.scene.BIMModelProperties
-        self.collection = bpy.context.view_layer.active_layer_collection.collection
-        self.collection_obj = self.collection.BIMCollectionProperties.obj
+        self.container = None
+        if container := tool.Root.get_default_container():
+            self.container = container
+            self.container_obj = tool.Ifc.get_object(container)
        self.depth = sum(thicknesses) * unit_scale
        self.width = 3
        self.length = 3
@@ -161,13 +162,12 @@ class DumbSlabGenerator:

        matrix_world = Matrix()
        matrix_world.translation = self.location
-        if self.collection_obj and self.collection_obj.BIMObjectProperties.ifc_definition_id:
-            matrix_world.translation.z = self.collection_obj.location.z - self.depth
+        if self.container_obj:
+            matrix_world.translation.z = self.container_obj.location.z - self.depth
        else:
            matrix_world.translation.z -= self.depth
        obj.matrix_world = Matrix.Rotation(self.x_angle, 4, "X") @ matrix_world
        bpy.context.view_layer.update()
-        self.collection.objects.link(obj)

        element = blenderbim.core.root.assign_class(
            tool.Ifc,
@@ -176,7 +176,6 @@ class DumbSlabGenerator:
            obj=obj,
            ifc_class=ifc_class,
            should_add_representation=False,
-            context=self.body_context,
        )
        ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=self.relating_type)

@@ -18,16 +18,13 @@


 import bpy
-import ifcopenshell
-import ifcopenshell.util.element
 import blenderbim.tool as tool
 import blenderbim.core.spatial as core
-import blenderbim.core.type


 class GenerateSpace(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.generate_space"
-    bl_label = "Generate Space"
+    bl_label = "Generate Space from Cursor"
    bl_options = {"REGISTER"}
    bl_description = (
        "Create a space from the cursor position. "
@@ -35,33 +32,15 @@ class GenerateSpace(bpy.types.Operator, tool.Ifc.Operator):
        "select the right space collection and run the operator"
    )

-    @classmethod
-    def poll(cls, context):
-        collection = context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
-        active_obj = context.active_object
-        element = tool.Ifc.get_entity(active_obj)
-        return tool.Ifc.get_entity(collection_obj) and not element.is_a("IfcWall")
-
    def _execute(self, context):
        # This works as a 2.5 extruded polygon based on a cutting plane. Note
        # that rooms exclude walls (i.e. not to wall midpoint or exterior /
        # exterior edge.

-        def msg(self, context):
-            self.layout.label(text="NO ACTIVE STOREY")
-
-        collection = context.view_layer.active_layer_collection.collection
-        collection_obj = collection.BIMCollectionProperties.obj
-        if not collection_obj:
-            context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-            return
-        spatial_element = tool.Ifc.get_entity(collection_obj)
-        if not spatial_element:
-            context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-            return
-
-        core.generate_space(tool.Ifc, tool.Spatial, tool.Model, tool.Type)
+        try:
+            core.generate_space(tool.Ifc, tool.Model, tool.Root, tool.Spatial, tool.Type)
+        except core.NoDefaultContainer:
+            return self.report({"ERROR"}, "Please set a default container to create the space in.")


 class GenerateSpacesFromWalls(bpy.types.Operator, tool.Ifc.Operator):
@@ -70,13 +49,6 @@ class GenerateSpacesFromWalls(bpy.types.Operator, tool.Ifc.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Generate spaces from selected walls. The active object must be a wall"

-    @classmethod
-    def poll(cls, context):
-        active_obj = context.active_object
-        element = tool.Ifc.get_entity(active_obj)
-        if element:
-            return context.selected_objects and element.is_a("IfcWall")
-
    def _execute(self, context):
        # This only works based on a 2D plan only considering the standard
        # walls (i.e. prismatic) in the active object storey.
@@ -87,19 +59,30 @@ class GenerateSpacesFromWalls(bpy.types.Operator, tool.Ifc.Operator):
        element = tool.Ifc.get_entity(active_obj)
        container = tool.Spatial.get_container(element)

+        def msg_no_active_object(self, context):
+            self.layout.label(text="No active object. Please select a wall")
+        def msg_no_active_wall(self, context):
+            self.layout.label(text="The active object is not a wall. Please select a wall.")
+        def msg_no_container(self, context):
+            self.layout.label(text="The wall is not contained. Please the selected wall in a building container")
+        def msg_no_selected_objects(self, context):
+            self.layout.label(text="No selected objects found. Please select walls.")
+
        if not active_obj:
-            self.report({"ERROR"}, "No active object. Please select a wall")
+            context.window_manager.popup_menu(msg_no_active_object, title="Error", icon="ERROR")
            return

        element = tool.Ifc.get_entity(active_obj)
        if element and not element.is_a("IfcWall"):
-            return self.report({"ERROR"}, "The active object is not a wall. Please select a wall.")
+            context.window_manager.popup_menu(msg_no_active_wall, title="Error", icon="ERROR")
+            return

        if not container:
-            self.report({"ERROR"}, "The wall is not contained.")
+            context.window_manager.popup_menu(msg_no_container, title="Error", icon="ERROR")
+            return

        if not context.selected_objects:
-            self.report({"ERROR"}, "No selected objects found. Please select walls.")
+            context.window_manager.popup_menu(msg_no_selected_objects, title="Error", icon="ERROR")
            return

        core.generate_spaces_from_walls(tool.Ifc, tool.Spatial, tool.Collector)
@@ -20,7 +20,11 @@ import bpy
 import json
 import bmesh
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.representation
+import ifcopenshell.util.unit
 import blenderbim
+import blenderbim.core.root
 import blenderbim.tool as tool
 from mathutils import Vector
 from bmesh.types import BMVert
@@ -214,10 +218,7 @@ class BIM_OT_add_clever_stair(bpy.types.Operator, tool.Ifc.Operator):
        mesh = bpy.data.meshes.new("IfcStairFlight")
        obj = bpy.data.objects.new("StairFlight", mesh)
        obj.location = spawn_location
-        collection = context.view_layer.active_layer_collection.collection
-        collection.objects.link(obj)

-        body_context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
        element = blenderbim.core.root.assign_class(
            tool.Ifc,
            tool.Collector,
@@ -225,7 +226,6 @@ class BIM_OT_add_clever_stair(bpy.types.Operator, tool.Ifc.Operator):
            obj=obj,
            ifc_class="IfcStairFlight",
            should_add_representation=False,
-            context=body_context,
        )
        if tool.Ifc.get_schema() != "IFC2X3":
            element.PredefinedType = "STRAIGHT"
@@ -337,6 +337,6 @@ class RemoveStair(bpy.types.Operator, tool.Ifc.Operator):
        obj.BIMStairProperties.is_editing = False

        pset = tool.Pset.get_element_pset(element, "BBIM_Stair")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)

        return {"FINISHED"}
@@ -56,8 +56,11 @@ class LaunchTypeManager(bpy.types.Operator):
            ifc_class = props.ifc_class or AuthoringData.data["ifc_element_type"]
        else:
            ifc_class = AuthoringData.data["ifc_element_type"]
-        props.type_class = ifc_class
-        bpy.ops.bim.load_type_thumbnails(ifc_class=ifc_class, offset=0, limit=9)
+
+        # will be None if project has no types
+        if ifc_class is not None:
+            props.type_class = ifc_class
+            bpy.ops.bim.load_type_thumbnails(ifc_class=ifc_class, offset=0, limit=9)
        return context.window_manager.invoke_popup(self, width=550)

    def draw(self, context):
@@ -220,6 +223,8 @@ class BIM_PT_array(bpy.types.Panel):
                    row = col.row(align=True)
                    row.prop(props, "z")
                    row.operator("bim.input_cursor_z_array", icon="CURSOR", text="")
+                    row = col.row(align=True)
+                    row.prop(props, "relating_array_object", icon="COPYDOWN")
                else:
                    row = box.row(align=True)
                    name = f"{array['count']} Items ({array.get('method', 'OFFSET').capitalize()})"
@@ -34,7 +34,7 @@ import blenderbim.core.root
 import blenderbim.core.geometry
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
-from math import pi, sin, cos, degrees, radians
+from math import pi, sin, cos, degrees
 from mathutils import Vector, Matrix
 from blenderbim.bim.module.model.opening import FilledOpeningGenerator
 from typing import Optional
@@ -449,8 +449,10 @@ class DumbWallGenerator:
        self.axis_context = ifcopenshell.util.representation.get_context(tool.Ifc.get(), "Plan", "Axis", "GRAPH_VIEW")

        props = bpy.context.scene.BIMModelProperties
-        self.collection = bpy.context.view_layer.active_layer_collection.collection
-        self.collection_obj = self.collection.BIMCollectionProperties.obj
+        self.container = None
+        if container := tool.Root.get_default_container():
+            self.container = container
+            self.container_obj = tool.Ifc.get_object(container)
        self.width = self.layers["thickness"]
        self.height = props.extrusion_depth
        self.length = props.length
@@ -540,11 +542,12 @@ class DumbWallGenerator:
    def derive_from_cursor(self):
        RAYCAST_PRECISION = 0.01
        self.location = bpy.context.scene.cursor.location
-        if self.collection:
-            for sibling_obj in self.collection.objects:
-                if not isinstance(sibling_obj.data, bpy.types.Mesh):
+        if self.container:
+            for subelement in ifcopenshell.util.element.get_decomposition(self.container):
+                if not subelement.is_a("IfcWall"):
                    continue
-                if "IfcWall" not in sibling_obj.name:
+                sibling_obj = tool.Ifc.get_object(subelement)
+                if not sibling_obj or not isinstance(sibling_obj.data, bpy.types.Mesh):
                    continue
                inv_obj_matrix = sibling_obj.matrix_world.inverted()
                local_location = inv_obj_matrix @ self.location
@@ -594,11 +597,10 @@ class DumbWallGenerator:

        matrix_world = Matrix.Rotation(self.rotation, 4, "Z")
        matrix_world.translation = self.location
-        if self.collection_obj and self.collection_obj.BIMObjectProperties.ifc_definition_id:
-            matrix_world.translation.z = self.collection_obj.location.z + props.rl1
+        if self.container_obj:
+            matrix_world.translation.z = self.container_obj.location.z + props.rl1
        obj.matrix_world = matrix_world
        bpy.context.view_layer.update()
-        self.collection.objects.link(obj)

        element = blenderbim.core.root.assign_class(
            tool.Ifc,
@@ -607,7 +609,6 @@ class DumbWallGenerator:
            obj=obj,
            ifc_class=ifc_class,
            should_add_representation=False,
-            context=self.body_context,
        )
        ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=self.relating_type)
        if self.axis_context:
@@ -26,66 +26,16 @@ import blenderbim.tool as tool
 import blenderbim.core.root
 import blenderbim.core.geometry
 from ifcopenshell.api.geometry.add_window_representation import DEFAULT_PANEL_SCHEMAS
+import ifcopenshell.api
+import ifcopenshell.util.element
+import ifcopenshell.util.representation
+import ifcopenshell.util.shape_builder
+import ifcopenshell.util.unit
 from ifcopenshell.util.shape_builder import V
 from bmesh.types import BMVert
 from mathutils import Vector


-# TODO: move to some utils helpers/tool module
-def update_simple_openings(element, opening_width, opening_height):
-    ifc_file = tool.Ifc.get()
-    fillings = tool.Ifc.get_all_element_occurrences(element)
-
-    voided_objs = set()
-    has_replaced_opening_representation = False
-    for filling in fillings:
-        if not filling.FillsVoids:
-            continue
-
-        opening = filling.FillsVoids[0].RelatingOpeningElement
-        voided_obj = tool.Ifc.get_object(opening.VoidsElements[0].RelatingBuildingElement)
-        voided_objs.add(voided_obj)
-
-        # we assume that the same element type (e.g. window)
-        # will be used only for voiding objects of the same thickness (by y-dimension)
-        # (e.g. all walls window's attached to will share the same thickness)
-        # If that's not the case it will some linings will be too thick or too thin
-        if has_replaced_opening_representation:
-            continue
-
-        old_representation = ifcopenshell.util.representation.get_representation(opening, "Model", "Body", "MODEL_VIEW")
-        old_representation = tool.Geometry.resolve_mapped_representation(old_representation)
-        ifcopenshell.api.run(
-            "geometry.unassign_representation", ifc_file, product=opening, representation=old_representation
-        )
-
-        thickness = voided_obj.dimensions[1] + 0.1 + 0.1
-        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
-        shape_builder = ifcopenshell.util.shape_builder.ShapeBuilder(ifc_file)
-        context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
-
-        extrusion = shape_builder.extrude(
-            shape_builder.rectangle(size=Vector([opening_width, 0.0, opening_height]).xz),
-            magnitude=thickness / unit_scale,
-            position=Vector([0.0, -0.1 / unit_scale, 0.0]),
-            **shape_builder.extrude_kwargs("Y")
-        )
-
-        new_representation = shape_builder.get_representation(context, extrusion)
-
-        for inverse in ifc_file.get_inverse(old_representation):
-            ifcopenshell.util.element.replace_attribute(inverse, old_representation, new_representation)
-
-        ifcopenshell.api.run("geometry.remove_representation", ifc_file, representation=old_representation)
-
-        has_replaced_opening_representation = True
-
-    tool.Model.reload_body_representation(voided_objs)
-    if fillings:
-        with bpy.context.temp_override(selected_objects=[tool.Ifc.get_object(f) for f in fillings]):
-            bpy.ops.bim.recalculate_fill()
-
-
 def update_window_modifier_representation(context, obj):
    element = tool.Ifc.get_entity(obj)
    props = obj.BIMWindowProperties
@@ -175,7 +125,7 @@ def update_window_modifier_representation(context, obj):
        occurrence.OverallWidth = props.overall_width / si_conversion
        occurrence.OverallHeight = props.overall_height / si_conversion

-    update_simple_openings(element, props.overall_width / si_conversion, props.overall_height / si_conversion)
+    tool.Model.update_simple_openings(element)


 def create_bm_window_frame(bm, size: Vector, thickness: list, position: Vector = V(0, 0, 0).freeze()):
@@ -452,8 +402,6 @@ class BIM_OT_add_window(bpy.types.Operator, tool.Ifc.Operator):
        mesh = bpy.data.meshes.new("IfcWindow")
        obj = bpy.data.objects.new("IfcWindow", mesh)
        obj.location = spawn_location
-        collection = context.view_layer.active_layer_collection.collection
-        collection.objects.link(obj)

        element = blenderbim.core.root.assign_class(
            tool.Ifc, tool.Collector, tool.Root, obj=obj, ifc_class="IfcWindow", should_add_representation=False
@@ -590,6 +538,6 @@ class RemoveWindow(bpy.types.Operator, tool.Ifc.Operator):
        obj.BIMWindowProperties.is_editing = False

        pset = tool.Pset.get_element_pset(element, "BBIM_Window")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)

        return {"FINISHED"}
@@ -22,7 +22,7 @@ import ifcopenshell
 import ifcopenshell.util.unit
 import blenderbim.tool as tool
 import blenderbim.bim.module.type.prop as type_prop
-from blenderbim.bim.helper import prop_with_search, close_operator_panel
+from blenderbim.bim.helper import prop_with_search
 from bpy.types import WorkSpaceTool
 from blenderbim.bim.module.model.data import AuthoringData
 from blenderbim.bim.module.drawing.data import DecoratorData
@@ -378,6 +378,7 @@ class BimToolUI:
            op.depth = cls.props.extrusion_depth

            add_layout_hotkey_operator(cls.layout, "Extend", "S_E", "")
+            add_layout_hotkey_operator(cls.layout, "Flip", "S_F", bpy.ops.bim.flip_object.__doc__)

            if AuthoringData.data["active_class"] in (
                "IfcCableCarrierSegment",
@@ -385,8 +386,8 @@ class BimToolUI:
                "IfcDuctSegment",
                "IfcPipeSegment",
            ):
-                add_layout_hotkey_operator(cls.layout, "Add Fitting", "S_F", "")

+                add_layout_hotkey_operator(cls.layout, "Add Fitting", "S_Y", "")
                if context.region.type != "TOOL_HEADER":
                    cls.layout.operator("bim.mep_add_bend")
                    cls.layout.operator("bim.mep_add_transition")
@@ -394,7 +395,6 @@ class BimToolUI:

            else:
                add_layout_hotkey_operator(cls.layout, "Edit Axis", "A_E", "")
-                add_layout_hotkey_operator(cls.layout, "Flip", "S_F", bpy.ops.bim.flip_object.__doc__)
                add_layout_hotkey_operator(cls.layout, "Butt", "S_T", "")
                add_layout_hotkey_operator(cls.layout, "Mitre", "S_Y", "")
                add_layout_hotkey_operator(cls.layout, "Rotate 90", "S_R", bpy.ops.bim.rotate_90.__doc__)
@@ -485,7 +485,7 @@ class BimToolUI:

        cls.layout.separator()
        add_layout_hotkey_operator(
-            cls.layout, "Calculate All Quantities", "S_Q", bpy.ops.bim.calculate_all_quantities.__doc__
+            cls.layout, "Perform Quantity Take-off", "S_Q", bpy.ops.bim.perform_quantity_take_off.__doc__
        )

    @classmethod
@@ -614,7 +614,7 @@ class Hotkey(bpy.types.Operator, tool.Ifc.Operator):
        if not bpy.context.selected_objects:
            return

-        bpy.ops.bim.calculate_all_quantities()
+        bpy.ops.bim.perform_quantity_take_off()

    def hotkey_C_P(self):
        if not bpy.context.selected_objects:
@@ -719,10 +719,9 @@ class Hotkey(bpy.types.Operator, tool.Ifc.Operator):
            bpy.ops.bim.flip_wall()
        elif self.active_class in ("IfcWindow", "IfcWindowStandardCase", "IfcDoor", "IfcDoorStandardCase"):
            bpy.ops.bim.flip_fill()
-        elif self.active_class in ("IfcBeam", "IfcColumn"):
+        elif self.active_material_usage == "PROFILE":
            bpy.ops.bim.flip_object(flip_local_axes="XZ")
-        elif self.active_class in ("IfcDuctSegment", "IfcPipeSegment", "IfcCableCarrierSegment", "IfcCableSegment"):
-            bpy.ops.bim.fit_flow_segments()
+

    def hotkey_S_G(self):
        obj = bpy.context.active_object
@@ -808,9 +807,12 @@ class Hotkey(bpy.types.Operator, tool.Ifc.Operator):
            return
        if self.active_material_usage == "LAYER2":
            bpy.ops.bim.join_wall(join_type="V")
+        elif self.active_class in ("IfcDuctSegment", "IfcPipeSegment", "IfcCableCarrierSegment", "IfcCableSegment"):
+            bpy.ops.bim.fit_flow_segments()
        elif self.active_material_usage == "PROFILE":
            bpy.ops.bim.extend_profile(join_type="V")

+
    def hotkey_S_B(self):
        bpy.ops.bim.add_boundary()

@@ -121,12 +121,16 @@ class UpdateIfcPatchArguments(bpy.types.Operator):
            for arg_name in inputs:
                arg_info = inputs[arg_name]
                new_attr = patch_args.add()
+                data_type = arg_info.get("type", "str")
+                if isinstance(data_type, list):
+                    data_type = [dt for dt in data_type if dt != "NoneType"][0]
                new_attr.data_type = {
+                    "Literal": "string",
                    "str": "string",
                    "float": "float",
                    "int": "integer",
                    "bool": "boolean",
-                }[arg_info.get("type", "str")]
+                }[data_type]
                new_attr.name = arg_name
                new_attr.set_value(arg_info.get("default", new_attr.get_value_default()))
        return {"FINISHED"}
@@ -21,6 +21,7 @@ from . import ui, prop, operator, data

 classes = (
    operator.AddProfileDef,
+    operator.DuplicateProfileDef,
    operator.DisableEditingArbitraryProfile,
    operator.DisableEditingProfile,
    operator.DisableProfileEditingUI,
@@ -66,9 +66,15 @@ class RemoveProfileDef(bpy.types.Operator, tool.Ifc.Operator):
    profile: bpy.props.IntProperty()

    def _execute(self, context):
+        props = context.scene.BIMProfileProperties
+        current_index = props.active_profile_index
        ifcopenshell.api.run("profile.remove_profile", tool.Ifc.get(), profile=tool.Ifc.get().by_id(self.profile))
        bpy.ops.bim.load_profiles()

+        # preserve selected index if possible
+        if props.profiles:
+            props.active_profile_index = min(current_index, len(props.profiles) - 1)
+

 class EnableEditingProfile(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.enable_editing_profile"
@@ -126,6 +132,27 @@ class AddProfileDef(bpy.types.Operator, tool.Ifc.Operator):
        bpy.ops.bim.load_profiles()


+class DuplicateProfileDef(bpy.types.Operator, tool.Ifc.Operator):
+    bl_idname = "bim.duplicate_profile_def"
+    bl_label = "Duplicate Profile"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        props = context.scene.BIMProfileProperties
+        if len(props.profiles) > props.active_profile_index:
+            return True
+        cls.poll_message_set("No profile selected to duplicate.")
+        return False
+
+    def _execute(self, context):
+        props = context.scene.BIMProfileProperties
+        ifc_file = tool.Ifc.get()
+        profile = ifc_file.by_id(props.profiles[props.active_profile_index].ifc_definition_id)
+        tool.Profile.duplicate_profile(profile)
+        bpy.ops.bim.load_profiles()
+
+
 class EnableEditingArbitraryProfile(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.enable_editing_arbitrary_profile"
    bl_label = "Enable Editing Arbitrary Profile"
@@ -148,7 +175,7 @@ class EnableEditingArbitraryProfile(bpy.types.Operator, tool.Ifc.Operator):

 def disable_editing_arbitrary_profile(context):
    obj = context.active_object
-    if obj and obj.data and obj.data.BIMMeshProperties.subshape_type == "PROFILE":
+    if obj and obj.type == "MESH" and obj.data and obj.data.BIMMeshProperties.subshape_type == "PROFILE":
        ProfileDecorator.uninstall()
        bpy.ops.object.mode_set(mode="OBJECT")
        profile_mesh = obj.data
@@ -70,6 +70,7 @@ class BIM_PT_profiles(Panel):
        row = self.layout.row(align=True)
        row.prop(self.props, "profile_classes", text="")
        row.operator("bim.add_profile_def", text="", icon="ADD")
+        row.operator("bim.duplicate_profile_def", icon="DUPLICATE", text="")

        self.layout.template_list(
            "BIM_UL_profiles",
@@ -36,8 +36,8 @@ classes = (
    operator.EnableCulling,
    operator.EnableEditingHeader,
    operator.ExportIFC,
+    operator.ExportIFCDeprecated,
    operator.FlipClippingPlane,
-    operator.ImportIFC,
    operator.LinkIfc,
    operator.LoadLink,
    operator.LoadLinkedProject,
@@ -76,6 +76,11 @@ classes = (
    gizmo.ClippingPlane,
 )

+if bpy.app.version >= (4, 1, 0):
+    classes += (
+        operator.IFCFileHandlerOperator,
+        operator.BIM_FH_import_ifc,
+    )

 addon_keymaps = []

@@ -97,7 +102,7 @@ def register():
        addon_keymaps.append((km, kmi))

        km = wm.keyconfigs.addon.keymaps.new(name="Window", space_type="EMPTY")
-        kmi = km.keymap_items.new("export_ifc.bim", "S", "PRESS", ctrl=True)
+        kmi = km.keymap_items.new("bim.save_project", "S", "PRESS", ctrl=True)
        kmi.properties.should_save_as = False
        addon_keymaps.append((km, kmi))

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