The IFC Class panel now shows inherited predefined types

* Create simple parser for ifc header specs

* Refactor logic to be usable with other file selectors

* Fix parsing error

.github/workflows/cd.yml

@@ -28,7 +28,7 @@ jobs:
         sudo apt update
         sudo apt-get install --no-install-recommends \
         git cmake gcc g++ libboost-all-dev python3-all-dev swig libpcre3-dev libxml2-dev \
-        liboce-foundation-dev liboce-modeling-dev liboce-ocaf-dev liboce-visualization-dev liboce-ocaf-lite-dev \
+        libocct-foundation-dev libocct-modeling-algorithms-dev libocct-modeling-data-dev libocct-ocaf-dev libocct-visualization-dev libocct-data-exchange-dev \
         libhdf5-dev libcgal-dev
 
     -
@@ -47,7 +47,7 @@ jobs:
          -DCMAKE_PREFIX_PATH=/usr \
          -DCMAKE_SYSTEM_PREFIX_PATH=/usr \
          -DBUILD_PACKAGE=On \
-         -DOCC_INCLUDE_DIR=/usr/include/oce \
+         -DOCC_INCLUDE_DIR=/usr/include/opencascade \
          -DOCC_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
          -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3 \
          -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.8 \

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
           python3-all-dev python3-pip \
           swig libpcre3-dev libxml2-dev \
           libtbb-dev nlohmann-json3-dev \
-          liboce-foundation-dev liboce-modeling-dev liboce-ocaf-dev liboce-visualization-dev liboce-ocaf-lite-dev \
+          libocct-foundation-dev libocct-modeling-algorithms-dev libocct-modeling-data-dev libocct-ocaf-dev libocct-visualization-dev libocct-data-exchange-dev \
           libhdf5-dev libcgal-dev
           
       - name: ccache
@@ -53,11 +53,10 @@ jobs:
           cmake \
                -DCMAKE_C_COMPILER_LAUNCHER=ccache \
                -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-               -DCMAKE_INSTALL_PREFIX=$PWD/install/ \
                -DCMAKE_BUILD_TYPE=Release \
                -DCMAKE_PREFIX_PATH=/usr \
                -DCMAKE_SYSTEM_PREFIX_PATH=/usr \
-               -DOCC_INCLUDE_DIR=/usr/include/oce \
+               -DOCC_INCLUDE_DIR=/usr/include/opencascade \
                -DOCC_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
                -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3 \
                -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.8 \

.github/workflows/release.yml

@@ -24,7 +24,7 @@ jobs:
         run: |
           sudo apt update
           sudo apt-get install git cmake gcc g++ libboost1.67-all-dev python3-all-dev swig libpcre3-dev libxml2-dev
-          sudo apt-get install liboce-foundation-dev liboce-modeling-dev liboce-ocaf-dev liboce-visualization-dev liboce-ocaf-lite-dev \
+          sudo apt-get install libocct-foundation-dev libocct-modeling-algorithms-dev libocct-modeling-data-dev libocct-ocaf-dev libocct-visualization-dev libocct-data-exchange-dev \
           libhdf5-dev
           
       - name: Build
@@ -39,7 +39,7 @@ jobs:
            -DCMAKE_PREFIX_PATH=/usr \
            -DCMAKE_SYSTEM_PREFIX_PATH=/usr \
            -DBUILD_PACKAGE=On \
-           -DOCC_INCLUDE_DIR=/usr/include/oce \
+           -DOCC_INCLUDE_DIR=/usr/include/opencascade \
            -DOCC_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
            -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3 \
            -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.8 \

README.md

@@ -1,7 +1,9 @@
 IfcOpenShell 
 ============
 IfcOpenShell is an open source ([LGPL]) software library for working with the Industry Foundation Classes ([IFC]) 
-file format. Currently supported IFC releases are [IFC2x3 TC1] and [IFC4 Add2 TC1].
+file format. Extensive geometric support is implemented for the IFC releases [IFC2x3 TC1] and [IFC4 Add2 TC1].
+Support for parsing is provided for IFC4x1, IFC4x2, and the IFC4x3 release candidates. Extending with support for
+arbitrary IFC schemas is possible at compile-time when using C++ and at run-time when using Python.
 
 For more information, see
 * [http://ifcopenshell.org](http://ifcopenshell.org)  
@@ -13,7 +15,7 @@ Prerequisites
 -------------
 * Git
 * CMake (2.6 or newer)
-* Windows: [Visual Studio] 2008 or newer with C++ toolset (or [Visual C++ Build Tools]) or [MSYS2] + MinGW
+* Windows: [Visual Studio] 2008 to 2019 (2022 not yet supported by dependency CMake) with C++ toolset (or [Visual C++ Build Tools]) or [MSYS2] + MinGW
 * *nix: GCC 4.7 or newer, or Clang (any version)
 
 Dependencies
@@ -33,7 +35,9 @@ Dependencies
 Building IfcOpenShell
 ---------------------
 
-**Note:** The path where the source code is cloned to can contain spaces but non-ASCII characters are very likely to cause problems with the build.
+Note 1: The path where the source code is cloned to can contain spaces but non-ASCII characters are very likely to cause problems with the build.
+
+Note 2: If you had not used `git clone --recursive https://github.com/IfcOpenShell/IfcOpenshell.git`, update the submodules by running `git submodule init & git submodule update`.
 
 ### Compiling on Windows
 The preferred way to fetch and build this project's dependencies is to use the build scripts
@@ -81,17 +85,26 @@ The following instructions are for Ubuntu, modify as required for other operatin
 can be experimented with and studied for pointers for other operating systems, but note that this script is not currently
 meant to be used for a typical IfcOpenShell workspace setup.
 
-Note: where `make -j` is written, add a number roughly equal to the amount of CPU cores + 1.
+Note 1: It is recommeded to use OCCT for IfcOpenShell. You could use OCE as well, but sometimes it may lag behind OCCT and 
+therefore not compile with the latest IfcOpenShell.
+
+Note 2: where `make -j` is written, add a number roughly equal to the amount of CPU cores + 1.
 
 **1)** Install most of the prerequisites and dependencies:
 
-    $ sudo apt-get install git cmake gcc g++ libboost-all-dev
+    $ sudo apt-get install git cmake gcc g++ libboost-all-dev libcgal-dev
 
-**2a)** Either use an OCE package from your operating system's software repository
+**2a)** Either use an OCCT package from your operating system's software repository
+
+    $ sudo apt-get install libocct-data-exchange-dev libocct-draw-dev libocct-foundation-dev libocct-modeling-algorithms-dev libocct-modeling-data-dev libocct-ocaf-dev libocct-visualization-dev
+
+**2b)** or, if OCCT is not available or the latest code is wanted, obtain and compile OCCT from https://dev.opencascade.org/release
+
+**2c)** or, if you'd like to try using OCE, use the package from your operating system's software repository
 
     $ sudo apt-get install liboce-foundation-dev liboce-modeling-dev liboce-ocaf-dev liboce-visualization-dev liboce-ocaf-lite-dev
 
-**2b)** or (if not available, or the latest code is wanted) compile OCE yourself (note that the build takes a long time):
+**2d)** or if OCE is not available, or the latest code is wanted, compile OCE yourself (note that the build takes a long time)
 
     $ sudo apt-get install libftgl-dev libtbb2 libtbb-dev libgl1-mesa-dev libfreetype6-dev
     $ git clone https://github.com/tpaviot/oce.git
@@ -101,8 +114,6 @@ Note: where `make -j` is written, add a number roughly equal to the amount of CP
     $ make -j
     $ sudo make install
 
-**2c)** or obtain and compile OCCT from https://dev.opencascade.org/release
-
 **3)** For building IfcConvert with COLLADA (.dae) support (on by default), OpenCOLLADA is needed:
 
     $ sudo apt-get install libpcre3-dev libxml2-dev
@@ -128,7 +139,13 @@ dependencies' paths. `OCC_INCLUDE_DIR` might be needed to set also. `OPENCOLLADA
     $ cmake ../cmake -DOCC_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu/ \
           -DOPENCOLLADA_INCLUDE_DIR="/usr/local/include/opencollada" \
           -DOPENCOLLADA_LIBRARY_DIR="/usr/local/lib/opencollada"  \
-          -DPCRE_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu/
+          -DPCRE_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu/ \
+          -DCGAL_INCLUDE_DIR=/usr/include \
+          -DGMP_INCLUDE_DIR=/usr/include \
+          -DMPFR_INCLUDE_DIR=/usr/include \
+          -DGMP_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
+          -DMPFR_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
+          -DHDF5_SUPPORT=Off
     $ make -j
 
 If all worked out correctly you can now use IfcOpenShell. See the examples below.

cmake/CMakeLists.txt

@@ -60,6 +60,7 @@ if (${BUILD_CONVERT})
 OPTION(GLTF_SUPPORT "Build IfcConvert with glTF support (requires json.hpp)." OFF)
 endif()
 OPTION(USERSPACE_PYTHON_PREFIX "Installs IfcPython for the current user only instead of system-wide." OFF)
+OPTION(ADD_COMMIT_SHA "Add commit sha and branch in version number, warning results in many rebuilds, requires git" OFF)
 
 # TODO QtViewer is deprecated ATM as it uses the 0.4 API
 # OPTION(BUILD_QTVIEWER "Build IfcOpenShell Qt GUI Viewer (requires Qt 4 framework)." OFF)
@@ -144,6 +145,7 @@ ELSE()
 	MESSAGE(FATAL_ERROR "Unable to find JSON for Modern C++ header file, aborting")
 ENDIF()
 add_definitions(-DWITH_GLTF)
+set(SWIG_DEFINES ${SWIG_DEFINES} -DWITH_GLTF)
 endif()
 
 # Set INSTALL_RPATH for target
@@ -200,6 +202,7 @@ find_package(LibXml2 REQUIRED)
 
 if (IFCXML_SUPPORT)
     add_definitions(-DWITH_IFCXML)
+	set(SWIG_DEFINES ${SWIG_DEFINES} -DWITH_IFCXML)
 endif()
 
 FIND_PACKAGE(Boost REQUIRED COMPONENTS ${BOOST_COMPONENTS})
@@ -270,6 +273,9 @@ ENDIF()
 SET(OPENCASCADE_LIBRARY_NAMES
     TKernel TKMath TKBRep TKGeomBase TKGeomAlgo TKG3d TKG2d TKShHealing TKTopAlgo TKMesh TKPrim TKBool TKBO
     TKFillet TKSTEP TKSTEPBase TKSTEPAttr TKXSBase TKSTEP209 TKIGES TKOffset TKHLR
+    
+    # @todo investigate the exact conditions when this is necessary
+    TKBin
 )
 
 IF("${OCC_LIBRARY_DIR}" STREQUAL "")
@@ -368,6 +374,8 @@ IF(COLLADA_SUPPORT)
 	IF(COLLADASWStreamWriter_h)
 		MESSAGE(STATUS "OpenCOLLADA header files found")
 		ADD_DEFINITIONS(-DWITH_OPENCOLLADA)
+		set(SWIG_DEFINES ${SWIG_DEFINES} -DWITH_OPENCOLLADA)
+
 		SET(OPENCOLLADA_LIBRARY_NAMES
 			GeneratedSaxParser MathMLSolver OpenCOLLADABaseUtils OpenCOLLADAFramework OpenCOLLADASaxFrameworkLoader
 			OpenCOLLADAStreamWriter UTF buffer ftoa
@@ -450,15 +458,16 @@ if(HDF5_SUPPORT)
     	# debian default
     	
         SET(HDF5_LIBRARIES
-            /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_cpp.a
-            /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5.a
-            /usr/lib/x86_64-linux-gnu/libsz.a
-            /usr/lib/x86_64-linux-gnu/libaec.a
+            /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_cpp.so
+            /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5.so
+            /usr/lib/x86_64-linux-gnu/libsz.so
+            /usr/lib/x86_64-linux-gnu/libaec.so
             z dl
         )
     endif()
     
     add_definitions(-DWITH_HDF5)
+	set(SWIG_DEFINES ${SWIG_DEFINES} -DWITH_HDF5)
 endif()
 
 IF(NOT CMAKE_BUILD_TYPE)
@@ -689,7 +698,7 @@ TARGET_LINK_LIBRARIES(IfcParse ${Boost_LIBRARIES} ${BCRYPT_LIBRARIES} ${LIBXML2_
 if (BUILD_IFCGEOM)
 
 # IfcGeom
-file(GLOB IFCGEOM_H_FILES ../src/ifcgeom/*.h)
+file(GLOB IFCGEOM_H_FILES ../src/ifcgeom/*.h ../src/ifcgeom/*.i)
 file(GLOB IFCGEOM_CPP_FILES ../src/ifcgeom/*.cpp)
 set(IFCGEOM_FILES ${IFCGEOM_CPP_FILES} ${IFCGEOM_H_FILES})
 
@@ -781,21 +790,20 @@ INSTALL(TARGETS IfcGeomServer
 
 endif()
 
+if (ADD_COMMIT_SHA)
 find_package (Git)
 if (GIT_FOUND)
 	message("git found: ${GIT_EXECUTABLE} with version ${GIT_VERSION_STRING}")
 	execute_process(
-		COMMAND ${GIT_EXECUTABLE} show -s --pretty=%D HEAD
+		COMMAND ${GIT_EXECUTABLE} branch --contains HEAD
 		OUTPUT_VARIABLE git_branches
 		OUTPUT_STRIP_TRAILING_WHITESPACE
 	)
-	string(REPLACE ", " ";" git_branch_list "${git_branches}")
-	string(REPLACE " -> " ";" git_branch_list "${git_branch_list}")
+	string(REPLACE "\n" ";" git_branch_list "${git_branches}")
 	foreach(git_branch_candidate IN ITEMS ${git_branch_list})
-		if (NOT git_branch_candidate MATCHES "/")
-			if (NOT git_branch_candidate MATCHES "^HEAD$")
-				set(git_branch ${git_branch_candidate})
-			endif()
+		string(STRIP "${git_branch_candidate}" git_branch_candidate_2)
+		if (NOT git_branch_candidate_2 MATCHES "^HEAD$")
+			set(git_branch ${git_branch_candidate_2})
 		endif()
 	endforeach()
 	execute_process(
@@ -803,11 +811,12 @@ if (GIT_FOUND)
 		OUTPUT_VARIABLE git_sha
 		OUTPUT_STRIP_TRAILING_WHITESPACE
 	)
-	message(STATUS "IfcOpenShell branch ${git_branch}")
-	message(STATUS "IfcOpenShell commit ${git_sha}")
+	message(STATUS "IfcOpenShell branch: \"${git_branch}\"")
+	message(STATUS "IfcOpenShell commit: \"${git_sha}\"")
 	add_definitions(-DIFCOPENSHELL_BRANCH=${git_branch})
 	add_definitions(-DIFCOPENSHELL_COMMIT=${git_sha})
 endif()
+endif()
 
 # Documentation
 IF(BUILD_DOCUMENTATION)

nix/build-all.py

@@ -56,16 +56,10 @@ import subprocess as sp
 import shutil
 import tarfile
 import multiprocessing
+import platform
+import sysconfig
 
-PYTHON_MAJOR = sys.version_info[0]
-
-if PYTHON_MAJOR >= 3:
-    from urllib.request import urlretrieve
-else:
-    # Not Python 3 - today, it is most likely to be Python 2
-    # But note that this might need an update when Python 4
-    # might be around one day
-    from urllib import urlretrieve
+from urllib.request import urlretrieve
 
 
 logger = logging.getLogger(__name__)
@@ -74,145 +68,120 @@ ch = logging.StreamHandler()
 ch.setLevel(logging.INFO)
 logger.addHandler(ch)
 
-PROJECT_NAME="IfcOpenShell"
-PYTHON_VERSIONS=["2.7.18", "3.5.5", "3.6.13", "3.7.10", "3.8.8", "3.9.2"]
-JSON_VERSION="v3.6.1"
-OCE_VERSION="0.18"
-OCCT_VERSION="7.5.3"
-BOOST_VERSION="1.71.0"
-PCRE_VERSION="8.41"
-LIBXML2_VERSION="2.9.9"
-SWIG_VERSION="3.0.12"
-OPENCOLLADA_VERSION="v1.6.68"
-HDF5_VERSION="1.8.22"
+PROJECT_NAME = "IfcOpenShell"
+USE_CURRENT_PYTHON_VERSION = os.getenv("USE_CURRENT_PYTHON_VERSION")
 
-GMP_VERSION="6.1.2"
-MPFR_VERSION="3.1.5"
-CGAL_VERSION="5.2"
+PYTHON_VERSIONS = ["3.6.14", "3.7.12", "3.8.12", "3.9.7", "3.10.0"]
+JSON_VERSION = "v3.6.1"
+OCE_VERSION = "0.18.3"
+OCCT_VERSION = "7.5.3"
+BOOST_VERSION = "1.71.0"
+PCRE_VERSION = "8.41"
+LIBXML2_VERSION = "2.9.11"
+SWIG_VERSION = "4.0.2"
+OPENCOLLADA_VERSION = "v1.6.68"
+HDF5_VERSION = "1.12.1"
+
+GMP_VERSION = "6.1.2"
+MPFR_VERSION = "3.1.5" # latest is 4.1.0
+CGAL_VERSION = "5.3"
 
 # binaries
-cp="cp"
-bash="bash"
-uname="uname"
-git="git"
-bunzip2="bunzip2"
-tar="tar"
-cc="cc"
-cplusplus="c++"
-autoconf="autoconf"
-automake="automake"
-yacc="yacc"
-make="make"
+cp = "cp"
+bash = "bash"
+git = "git"
+bunzip2 = "bunzip2"
+tar = "tar"
+cc = "cc"
+cplusplus = "c++"
+autoconf = "autoconf"
+automake = "automake"
+yacc = "yacc"
+make = "make"
 date = "date"
-curl="curl"
-wget="wget"
-strip="strip"
+curl = "curl"
+wget = "wget"
+strip = "strip"
 
 # Helper function for coloured printing
 
-NO_COLOR="\033[0m" # <ref>http://stackoverflow.com/questions/5947742/how-to-change-the-output-color-of-echo-in-linux</ref>
-BLACK_ON_WHITE="\033[0;30;107m"
-RED="\033[31m"
-GREEN="\033[32m"
-YELLOW="\033[33m"
-MAGENTA="\033[35m"
+NO_COLOR = "\033[0m" # <ref>http://stackoverflow.com/questions/5947742/how-to-change-the-output-color-of-echo-in-linux</ref>
+BLACK_ON_WHITE = "\033[0;30;107m"
+RED = "\033[31m"
+GREEN = "\033[32m"
+YELLOW = "\033[33m"
+MAGENTA = "\033[35m"
 
 def cecho(message, color=NO_COLOR):
     """Logs message `message` in color `color`."""
-    logger.info("%s%s\033[0m" % (color, message))
+    logger.info(f"{color}{message}\033[0m")
 
 def which(cmd):
-    for path in os.environ["PATH"].split(":"):
+    for path in os.getenv("PATH").split(":"):
         if os.path.exists(path) and cmd in os.listdir(path):
             return cmd
     return None
 
-def get_os():
-    ret_value = sp.check_output([uname, "-s"]).strip()
-    return ret_value
-
-def to_pystring(x):
-    """ Python 2 & 3 compatibility function for strings handling 
-    (to solve TypeError "Can't mix strings and bytes in path components" for Python 3).
-    Reference https://github.com/hugsy/gef/issues/382 """
-    res = str(x, encoding="utf-8") if PYTHON_MAJOR == 3 else x
-    substs = [("\n","\\n"), ("\r","\\r"), ("\t","\\t"), ("\v","\\v"), ("\b","\\b"), ]
-    for x,y in substs: res = res.replace(x,y)
-    return res
 
 # Set defaults for missing empty environment variables
 
 USE_OCCT = os.environ.get("USE_OCCT", "true").lower() == "true"
 
 TOOLSET = None
-if get_os() == "Darwin":
+if platform.system() == "Darwin":
     # C++11 features used in OCCT 7+ need a more recent stdlib
     TOOLSET = "10.9" if USE_OCCT else "10.6"
 
-try:
-    IFCOS_NUM_BUILD_PROCS = os.environ["IFCOS_NUM_BUILD_PROCS"]
-except KeyError:
-    IFCOS_NUM_BUILD_PROCS=multiprocessing.cpu_count() + 1
 
-try:
-    TARGET_ARCH = os.environ["TARGET_ARCH"]
-except KeyError:
-    TARGET_ARCH = sp.check_output([uname, "-m"]).strip()
+IFCOS_NUM_BUILD_PROCS = os.getenv("IFCOS_NUM_BUILD_PROCS", multiprocessing.cpu_count() + 1)
 
-CMAKE_DIR=os.path.realpath(os.path.join("..", "cmake"))
+CMAKE_DIR = os.path.realpath(os.path.join("..", "cmake"))
 
-try:
-    DEPS_DIR = os.environ["DEPS_DIR"]
-except KeyError:
-    path = [b"..", b"build", sp.check_output(uname).strip(), TARGET_ARCH]
-    if TOOLSET:
-        path.append(TOOLSET)
-        
-    DEPS_DIR = to_pystring(os.path.realpath(os.path.join(*path)))
+path = ["..", "build", platform.system(), platform.machine()]
+if TOOLSET:
+    path.append(TOOLSET)
+DEFAULT_DEPS_DIR = os.path.realpath(os.path.join(*path))
+
+DEPS_DIR = os.getenv("DEPS_DIR", DEFAULT_DEPS_DIR)
 
 if not os.path.exists(DEPS_DIR):
     os.makedirs(DEPS_DIR)
 
-try:
-    BUILD_CFG=os.environ["BUILD_CFG"]
-except KeyError:
-    BUILD_CFG="RelWithDebInfo"
+BUILD_CFG = os.getenv("BUILD_CFG", "RelWithDebInfo")
 
 
 # Print build configuration information
 
-cecho ("""This script fetches and builds %s and its dependencies
-""" % (PROJECT_NAME,), BLACK_ON_WHITE)
+cecho (f"""This script fetches and builds {PROJECT_NAME} and its dependencies
+""", BLACK_ON_WHITE)
 cecho("""Script configuration:
 
 """, GREEN)
-cecho("""* Target Architecture    = %s""" % (TARGET_ARCH,), MAGENTA)
-cecho(" - Whether 32-bit (i686) or 64-bit (x86_64) will be built.")
-cecho("""* USE_OCCT               = %r""" % (USE_OCCT,), MAGENTA)
+cecho(f"""* USE_OCCT               = {USE_OCCT}""", MAGENTA)
 if USE_OCCT:
     cecho(" - Compiling against official Open Cascade")
 else:
     cecho(" - Compiling against Open Cascade Community Edition")
-cecho("* Dependency Directory   = %s" % (DEPS_DIR,), MAGENTA)
-cecho(" - The directory where %s dependencies are installed." % (PROJECT_NAME,))
-cecho("* Build Config Type      = %s" % (BUILD_CFG,), MAGENTA)
+cecho(f"* Dependency Directory   = {DEPS_DIR}", MAGENTA)
+cecho(f" - The directory where {PROJECT_NAME} dependencies are installed.")
+cecho(f"* Build Config Type      = {BUILD_CFG}", MAGENTA)
 cecho(""" - The used build configuration type for the dependencies.
    Defaults to RelWithDebInfo if not specified.""")
 
 if BUILD_CFG == "MinSizeRel":
     cecho("     WARNING: MinSizeRel build can suffer from a significant performance loss.", RED)
 
-cecho("* IFCOS_NUM_BUILD_PROCS  = %s" % (IFCOS_NUM_BUILD_PROCS,), MAGENTA)
+cecho(f"* IFCOS_NUM_BUILD_PROCS  = {IFCOS_NUM_BUILD_PROCS}", MAGENTA)
 cecho(""" - How many compiler processes may be run in parallel.
 """)
 
 dependency_tree = {
-    'IfcParse': ('boost',  'libxml2', 'hdf5'),
-    'IfcGeom': ('IfcParse',  'occ', 'OpenCOLLADA', 'json', 'cgal'),
-    'IfcConvert': ('IfcGeom', ),
-    'OpenCOLLADA': ('libxml2',  'pcre'),
+    'IfcParse': ('boost', 'libxml2', 'hdf5'),
+    'IfcGeom': ('IfcParse', 'occ', 'json', 'cgal'),
+    'IfcConvert': ('IfcGeom',),
+    'OpenCOLLADA': ('libxml2', 'pcre'),
     'IfcGeomServer': ('IfcGeom',),
-    'IfcOpenShell-Python': ('python',  'swig',  'IfcGeom'),
+    'IfcOpenShell-Python': ('python', 'swig', 'IfcGeom'),
     'swig': ('pcre',),
     'boost': (),
     'libxml2': (),
@@ -252,7 +221,7 @@ print("Building:", *sorted(targets, key=lambda t: len(list(v(t)))))
 
 for cmd in [git, bunzip2, tar, cc, cplusplus, autoconf, automake, yacc, make, "patch", "cmake"]:
     if which(cmd) is None:
-        raise ValueError("Required tool '%s' not installed or not added to PATH" % (cmd,))
+        raise ValueError(f"Required tool '{cmd}' not installed or not added to PATH")
 
 # identifiers for the download tool (could be less memory consuming as ints, but are more verbose as strings)
 download_tool_default = download_tool_py = "py"
@@ -263,10 +232,10 @@ download_tool_git = "git"
 log_dir = os.path.join(DEPS_DIR, "logs")
 if not os.path.exists(log_dir):
     os.makedirs(log_dir)
-LOG_FILE="%s.log" % (os.path.join(log_dir, to_pystring(sp.check_output([date, "+%Y%m%d"]).strip())),)
+LOG_FILE = os.path.join(log_dir, sp.check_output([date, "+%Y%m%d"], encoding="utf-8").strip()) + ".log"
 if not os.path.exists(LOG_FILE):
     open(LOG_FILE, "w").close()
-logger.info("using command log file '%s'" % (LOG_FILE,))
+logger.info(f"using command log file '{LOG_FILE}'")
 
 def run(cmds, cwd=None):
 
@@ -276,43 +245,47 @@ def run(cmds, cwd=None):
     with leading and trailing whitespace removed.
     """
 
-    logger.debug("running command %r in directory %r" % (" ".join(cmds), cwd))
-    log_file_handle = open(LOG_FILE, "ab")
-    proc = sp.Popen(cmds, cwd=cwd, stdout=sp.PIPE, stderr=sp.PIPE)
+    logger.debug(f"running command {' '.join(cmds)} in directory {cwd}")
+    log_file_handle = open(LOG_FILE, "a")
+    proc = sp.Popen(cmds, cwd=cwd, stdout=sp.PIPE, stderr=sp.PIPE, encoding="utf-8")
     stdout, stderr = proc.communicate()
     log_file_handle.write(stdout)
     log_file_handle.write(stderr)
     log_file_handle.close()
-    logger.debug("command returned %r" % proc.returncode)
+    logger.debug(f"command returned {proc.returncode}")
 
     if proc.returncode != 0:
         print("-" * 70)
         print(stderr)
         print("-" * 70)
-        raise Exception("Command `%s` returned exit code %d" % (" ".join(cmds), proc.returncode))
+        raise RuntimeError(f"Command `{' '.join(cmds)}` returned exit code {proc.returncode}")
 
     return stdout.strip()
 
-BOOST_VERSION_UNDERSCORE=BOOST_VERSION.replace(".", "_")
+BOOST_VERSION_UNDERSCORE = BOOST_VERSION.replace(".", "_")
 
-OCE_LOCATION="https://github.com/tpaviot/oce/archive/OCE-%s.tar.gz" % (OCE_VERSION,)
-BOOST_LOCATION="https://boostorg.jfrog.io/artifactory/main/release/%s/source/" % (BOOST_VERSION,)
+OCE_LOCATION = f"https://github.com/tpaviot/oce/archive/OCE-{OCE_VERSION}.tar.gz"
+BOOST_LOCATION = f"https://boostorg.jfrog.io/artifactory/main/release/{BOOST_VERSION}/source/"
 
 # Helper functions
 
+
 def run_autoconf(arg1, configure_args, cwd):
     configure_path = os.path.realpath(os.path.join(cwd, "..", "configure"))
     if not os.path.exists(configure_path):
         run([bash, "./autogen.sh"], cwd=os.path.realpath(os.path.join(cwd, ".."))) # only run autogen.sh in the directory it is located and use cwd to achieve that in order to not mess up things
     # Using `sh` over `bash` fixes issues with building swig 
-    run(["/bin/sh", "../configure"]+configure_args+["--prefix=%s" % (os.path.realpath("%s/install/%s" % (DEPS_DIR, arg1)),)], cwd=cwd)
+    prefix = os.path.realpath(f"{DEPS_DIR}/install/{arg1}")
+    run(["/bin/sh", "../configure"] + configure_args + [f"--prefix={prefix}"], cwd=cwd)
+
 
 def run_cmake(arg1, cmake_args, cmake_dir=None, cwd=None):
     if cmake_dir is None:
-        P=".."
+        P = ".."
     else:
-        P=cmake_dir
-    run(["cmake", P]+cmake_args+["-DCMAKE_BUILD_TYPE=%s" % (BUILD_CFG,)], cwd=cwd)
+        P = cmake_dir
+    run(["cmake", P] + cmake_args + [f"-DCMAKE_BUILD_TYPE={BUILD_CFG}"], cwd=cwd)
+
 
 def git_clone_or_pull_repository(clone_url, target_dir, revision=None):
     """Lazily clones the `git` repository denoted by `clone_url` into
@@ -321,10 +294,10 @@ def git_clone_or_pull_repository(clone_url, target_dir, revision=None):
     `revision` after cloning or in the existing clone if `revision` is not
     `None`."""
     if not os.path.exists(target_dir):
-        logger.info("cloning '%s' into '%s'" % (clone_url, target_dir))
+        logger.info(f"cloning '{clone_url}' into '{target_dir}'")
         run([git, "clone", "--recursive", clone_url, target_dir])
     else:
-        logger.info("directory '%s' already cloned. Pulling latest changes." % (target_dir,))
+        logger.info(f"directory '{target_dir}' already cloned. Pulling latest changes.")
 
     # detect whether we are on a branch and pull
     if run([git, "rev-parse", "--abbrev-ref", "HEAD"], cwd=target_dir) != "HEAD":
@@ -341,13 +314,13 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
     linker flags."""
     check_dir = os.path.join(DEPS_DIR, "install", name)
     if os.path.exists(check_dir):
-        logger.info( "Found existing %s, skipping" % (name,))
+        logger.info(f"Found existing {name}, skipping")
         return
     build_dir = os.path.join(DEPS_DIR, "build")
     if not os.path.exists(build_dir):
         os.makedirs(build_dir)
         
-    logger.info("\rFetching %s...   " % (name,))
+    logger.info(f"\rFetching {name}...   ")
     
     if download_tool == download_tool_py:
         if no_append_name:
@@ -359,16 +332,16 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
         if not os.path.exists(download_path):
             urlretrieve(url, os.path.join(build_dir, download_path))
         else:
-            logger.info("Download '%s' already exists, assuming it's an undamaged download and that it has been extracted if possible, skipping" % (download_path,))
+            logger.info(f"Download '{download_path}' already exists, assuming it's an undamaged download and that it has been extracted if possible, skipping")
     elif download_tool == download_tool_git:
-        logger.info("\rChecking %s...   " % (name,))
+        logger.info(f"\rChecking {name}...   ")
         git_clone_or_pull_repository(download_url, target_dir=os.path.join(build_dir, download_name), revision=revision)
     else:
-        raise ValueError("download tool '%s' is not supported" % (download_tool,))
+        raise ValueError(f"download tool '{download_tool}' is not supported")
     download_dir = os.path.join(build_dir, download_name)
     
     if os.path.isdir(download_dir):
-        extract_dir_name=download_name
+        extract_dir_name = download_name
         extract_dir = os.path.join(build_dir, extract_dir_name)
     else:
         download_tarfile_path = os.path.join(build_dir, download_name)
@@ -378,12 +351,12 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
             compr = "bz2"
         else:
             raise RuntimeError("fix source for new download type")
-        download_tarfile = tarfile.open(name=download_tarfile_path, mode="r:%s" % (compr,))
+        download_tarfile = tarfile.open(name=download_tarfile_path, mode=f"r:{compr}")
         # tarfile seriously doesn't have a function to retrieve the root directory more easily
-        extract_dir_name= os.path.commonprefix([x for x in download_tarfile.getnames() if x != "."])
+        extract_dir_name = os.path.commonprefix([x for x in download_tarfile.getnames() if x != "."])
         #run([tar, "--exclude=\"*/*\"", "-tf", download_name], cwd=build_dir).strip() no longer works
         if extract_dir_name is None:
-            extract_dir_name= run([bash, "-c", "tar -tf %s 2> /dev/null | head -n 1 | cut -f1 -d /" % (download_name,)], cwd=build_dir)
+            extract_dir_name = run([bash, "-c", f"tar -tf {download_name} 2> /dev/null | head -n 1 | cut -f1 -d /"], cwd=build_dir)
         extract_dir = os.path.join(build_dir, extract_dir_name)
         if not os.path.exists(extract_dir):
             run([tar, "-xf", download_name], cwd=build_dir)
@@ -413,71 +386,66 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
             shutil.rmtree(extract_build_dir)
         os.makedirs(extract_build_dir)
 
-        logger.info("\rConfiguring %s..." % (name,))
+        logger.info(f"\rConfiguring {name}...")
         if mode == "autoconf":
             run_autoconf(name, build_tool_args, cwd=extract_build_dir)
         elif mode == "cmake":
             run_cmake(name, build_tool_args, cwd=extract_build_dir)
         else:
             raise ValueError()
-        logger.info("\rBuilding %s...   " % (name,))
-        run([make, "-j%s" % (IFCOS_NUM_BUILD_PROCS,), "VERBOSE=1"], cwd=extract_build_dir)
-        logger.info( "\rInstalling %s... " % (name,))
+        logger.info(f"\rBuilding {name}...   ")
+        run([make, f"-j{IFCOS_NUM_BUILD_PROCS}", "VERBOSE=1"], cwd=extract_build_dir)
+        logger.info(f"\rInstalling {name}... ")
         run([make, "install"], cwd=extract_build_dir)
-        logger.info( "\rInstalled %s     \n" % (name,))
+        logger.info(f"\rInstalled {name}     \n")
     else:
-        logger.info( "\rConfiguring %s..." % (name,))
+        logger.info(f"\rConfiguring {name}...")
         run([bash, "./bootstrap.sh"], cwd=extract_dir)
-        logger.info("\rBuilding %s...   " % (name,))
-        run(["./b2", "-j%s" % (IFCOS_NUM_BUILD_PROCS,)]+build_tool_args, cwd=extract_dir)
-        logger.info("\rInstalling %s... " % (name,))
-        shutil.copytree(os.path.join(extract_dir, "boost"), os.path.join(DEPS_DIR, "install", "boost-%s" % BOOST_VERSION, "boost"))
-        logger.info("\rInstalled %s     \n" % (name,))
+        logger.info(f"\rBuilding {name}...   ")
+        run(["./b2", f"-j{IFCOS_NUM_BUILD_PROCS}"] + build_tool_args, cwd=extract_dir)
+        logger.info(f"\rInstalling {name}... ")
+        shutil.copytree(os.path.join(extract_dir, "boost"), os.path.join(DEPS_DIR, "install", f"boost-{BOOST_VERSION}", "boost"))
+        logger.info(f"\rInstalled {name}     \n")
 
 cecho("Collecting dependencies:", GREEN)
 
 # Set compiler flags for 32bit builds on 64bit system
 # TODO: This is untested
 
-ADDITIONAL_ARGS=[]
-BOOST_ADDRESS_MODEL=[]
-if TARGET_ARCH == "i686" and run([uname, "-m"]).strip() == "x86_64":
-    if get_os() == "Darwin":
-        ADDITIONAL_ARGS=["-m32", "-arch i386"]
-    else:
-        ADDITIONAL_ARGS=["-m32"]
-    BOOST_ADDRESS_MODEL=["architecture=x86", "address-model=32"]
+ADDITIONAL_ARGS = []
+BOOST_ADDRESS_MODEL = []
 
-if get_os() == "Darwin":
-    ADDITIONAL_ARGS=["-mmacosx-version-min=%s" % TOOLSET]+ADDITIONAL_ARGS
+if platform.system() == "Darwin":
+    ADDITIONAL_ARGS = [f"-mmacosx-version-min={TOOLSET}"] + ADDITIONAL_ARGS
 
 # If the linker supports GC sections, set it up to reduce binary file size
 # -fPIC is required for the shared libraries to work
 
-CXXFLAGS=os.environ.get("CXXFLAGS", "")
-CFLAGS=os.environ.get("CFLAGS", "")
-LDFLAGS=os.environ.get("LDFLAGS", "")
+CXXFLAGS = os.environ.get("CXXFLAGS", "")
+CFLAGS = os.environ.get("CFLAGS", "")
+LDFLAGS = os.environ.get("LDFLAGS", "")
 
+ADDITIONAL_ARGS_STR = " ".join(ADDITIONAL_ARGS)
 if sp.call([bash, "-c", "ld --gc-sections 2>&1 | grep -- --gc-sections &> /dev/null"]) != 0:
-    CXXFLAGS_MINIMAL="%s %s %s" % (CXXFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
-    CFLAGS_MINIMAL="%s %s %s" % (CFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
+    CXXFLAGS_MINIMAL = f"{CXXFLAGS} {PIC} {ADDITIONAL_ARGS_STR}"
+    CFLAGS_MINIMAL = f"{CFLAGS} {PIC} {ADDITIONAL_ARGS_STR}"
     if BUILD_STATIC:
-        CXXFLAGS="%s %s -fdata-sections -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden %s" % (CXXFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
-        CFLAGS="%s   %s -fdata-sections -ffunction-sections -fvisibility=hidden %s"% (CFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
+        CXXFLAGS = f"{CXXFLAGS} {PIC} -fdata-sections -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden {ADDITIONAL_ARGS_STR}"
+        CFLAGS = f"{CFLAGS}   {PIC} -fdata-sections -ffunction-sections -fvisibility=hidden {ADDITIONAL_ARGS_STR}"
     else:
-        CXXFLAGS=CXXFLAGS_MINIMAL
-        CFLAGS=CFLAGS_MINIMAL
-    LDFLAGS="%s  -Wl,--gc-sections %s" % (LDFLAGS, str.join(" ", ADDITIONAL_ARGS))
+        CXXFLAGS = CXXFLAGS_MINIMAL
+        CFLAGS = CFLAGS_MINIMAL
+    LDFLAGS = f"{LDFLAGS}  -Wl,--gc-sections {ADDITIONAL_ARGS_STR}"
 else:
-    CXXFLAGS_MINIMAL="%s %s %s" % (CXXFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
-    CFLAGS_MINIMAL="%s   %s %s" % (CFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
+    CXXFLAGS_MINIMAL = f"{CXXFLAGS} {PIC} {ADDITIONAL_ARGS_STR}"
+    CFLAGS_MINIMAL = f"{CFLAGS}   {PIC} {ADDITIONAL_ARGS_STR}"
     if BUILD_STATIC:
-        CXXFLAGS="%s %s -fvisibility=hidden -fvisibility-inlines-hidden %s" % (CXXFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
-        CFLAGS="%s   %s -fvisibility=hidden -fvisibility-inlines-hidden %s" % (CFLAGS, PIC, str.join(" ", ADDITIONAL_ARGS))
+        CXXFLAGS = f"{CXXFLAGS} {PIC} -fvisibility=hidden -fvisibility-inlines-hidden {ADDITIONAL_ARGS_STR}"
+        CFLAGS = f"{CFLAGS}   {PIC} -fvisibility=hidden -fvisibility-inlines-hidden {ADDITIONAL_ARGS_STR}"
     else:
         CXXFLAGS=CXXFLAGS_MINIMAL
         CFLAGS=CFLAGS_MINIMAL
-    LDFLAGS="%s %s" % (LDFLAGS, str.join(" ", ADDITIONAL_ARGS))
+    LDFLAGS = f"{LDFLAGS} {ADDITIONAL_ARGS_STR}"
     
 os.environ["CXXFLAGS"] = CXXFLAGS
 os.environ["CFLAGS"] = CFLAGS
@@ -488,21 +456,20 @@ os.environ["LDFLAGS"] = LDFLAGS
 # build_dependency(name="cmake-%s" % (CMAKE_VERSION,), mode="autoconf", build_tool_args=[], download_url="https://cmake.org/files/v%s" % (CMAKE_VERSION_2,), download_name="cmake-%s.tar.gz" % (CMAKE_VERSION,))
 
 if 'hdf5' in targets:
-    HDF5_MAJOR=".".join(HDF5_VERSION.split(".")[:-1])
-    get_os_result = get_os()
+    HDF5_MAJOR = ".".join(HDF5_VERSION.split(".")[:-1])
     build_dependency(
-        name="hdf5-{HDF5_VERSION}".format(**locals()),
+        name=f"hdf5-{HDF5_VERSION}",
         mode="ctest",
         build_tool_args=[],
-        download_url="https://support.hdfgroup.org/ftp/HDF5/releases/hdf5-{HDF5_MAJOR}/hdf5-{HDF5_VERSION}/src/".format(**locals()),
-        download_name="CMake-hdf5-{HDF5_VERSION}.tar.gz".format(**locals()),
-        ctest_result="HDF5-{HDF5_VERSION}-{get_os_result}".format(**locals()),
-        ctest_result_path="HDF_Group/HDF5/{HDF5_VERSION}".format(**locals())
+        download_url=f"https://support.hdfgroup.org/ftp/HDF5/releases/hdf5-{HDF5_MAJOR}/hdf5-{HDF5_VERSION}/src/",
+        download_name=f"CMake-hdf5-{HDF5_VERSION}.tar.gz",
+        ctest_result=f"HDF5-{HDF5_VERSION}-{platform.system()}",
+        ctest_result_path=f"HDF_Group/HDF5/{HDF5_VERSION}"
     )
 
 if "json" in targets:
-    json_url = "https://github.com/nlohmann/json/releases/download/{JSON_VERSION}/json.hpp".format(**locals())
-    json_install_path = "{DEPS_DIR}/install/json/nlohmann/json.hpp".format(**locals())
+    json_url = f"https://github.com/nlohmann/json/releases/download/{JSON_VERSION}/json.hpp"
+    json_install_path = f"{DEPS_DIR}/install/json/nlohmann/json.hpp"
     if not os.path.exists(os.path.dirname(json_install_path)):
         os.makedirs(os.path.dirname(json_install_path))
     if not os.path.exists(json_install_path):
@@ -510,11 +477,11 @@ if "json" in targets:
 
 if "pcre" in targets:
     build_dependency(
-        name="pcre-{PCRE_VERSION}".format(**locals()),
+        name=f"pcre-{PCRE_VERSION}",
         mode="autoconf",
         build_tool_args=[DISABLE_FLAG],
-        download_url="https://downloads.sourceforge.net/project/pcre/pcre/{PCRE_VERSION}/".format(**locals()),
-        download_name="pcre-{PCRE_VERSION}.tar.bz2".format(**locals())
+        download_url=f"https://downloads.sourceforge.net/project/pcre/pcre/{PCRE_VERSION}/",
+        download_name=f"pcre-{PCRE_VERSION}.tar.bz2"
     )
 
 # An issue exists with swig-1.3 and python >= 3.2
@@ -523,20 +490,20 @@ if "swig" in targets:
     build_dependency(
         name="swig",
         mode="autoconf",
-        build_tool_args=["--disable-ccache", "--with-pcre-prefix={DEPS_DIR}/install/pcre-{PCRE_VERSION}".format(**locals())],
+        build_tool_args=["--disable-ccache", f"--with-pcre-prefix={DEPS_DIR}/install/pcre-{PCRE_VERSION}"],
         download_url="https://github.com/swig/swig.git",
         download_name="swig",
         download_tool=download_tool_git,
-        revision="rel-{SWIG_VERSION}".format(**locals())
+        revision=f"rel-{SWIG_VERSION}"
     )
 
 if USE_OCCT and "occ" in targets:
     build_dependency(
-        name="occt-{OCCT_VERSION}".format(**locals()),
+        name=f"occt-{OCCT_VERSION}",
         mode="cmake",
         build_tool_args=[
-            "-DINSTALL_DIR={DEPS_DIR}/install/occt-{OCCT_VERSION}".format(**locals()),
-            "-DBUILD_LIBRARY_TYPE={LINK_TYPE_UCFIRST}".format(**locals()),
+            f"-DINSTALL_DIR={DEPS_DIR}/install/occt-{OCCT_VERSION}",
+            f"-DBUILD_LIBRARY_TYPE={LINK_TYPE_UCFIRST}",
             "-DBUILD_MODULE_Draw=0",
             "-DBUILD_RELEASE_DISABLE_EXCEPTIONS=Off"
         ],
@@ -548,7 +515,7 @@ if USE_OCCT and "occ" in targets:
     )
 elif "occ" in targets:
     build_dependency(
-        name="oce-{OCE_VERSION}".format(**locals()),
+        name=f"oce-{OCE_VERSION}",
         mode="cmake",
         build_tool_args=[
             "-DOCE_DISABLE_TKSERVICE_FONT=ON",
@@ -557,15 +524,15 @@ elif "occ" in targets:
             "-DOCE_DISABLE_X11=ON",
             "-DOCE_VISUALISATION=OFF",
             "-DOCE_OCAF=OFF",
-            "-DOCE_INSTALL_PREFIX={DEPS_DIR}/install/oce-{OCE_VERSION}".format(**locals())
+            f"-DOCE_INSTALL_PREFIX={DEPS_DIR}/install/oce-{OCE_VERSION}"
         ],
         download_url="https://github.com/tpaviot/oce/archive/",
-        download_name="OCE-{OCE_VERSION}.tar.gz".format(**locals())
+        download_name=f"OCE-{OCE_VERSION}.tar.gz"
     )
         
 if "libxml2" in targets:
     build_dependency(
-        "libxml2-{LIBXML2_VERSION}".format(**locals()),
+        f"libxml2-{LIBXML2_VERSION}",
         "autoconf",
         build_tool_args=[
             "--without-python",
@@ -576,7 +543,7 @@ if "libxml2" in targets:
             "--without-lzma"
         ],
         download_url="ftp://xmlsoft.org/libxml2/",
-        download_name="libxml2-{LIBXML2_VERSION}.tar.gz".format(**locals())
+        download_name=f"libxml2-{LIBXML2_VERSION}.tar.gz"
     )
     
 if "OpenCOLLADA" in targets:
@@ -584,12 +551,12 @@ if "OpenCOLLADA" in targets:
         "OpenCOLLADA",
         "cmake",
         build_tool_args=[
-            "-DLIBXML2_INCLUDE_DIR={DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/include/libxml2".format(**locals()),
-            "-DLIBXML2_LIBRARIES={DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/lib/libxml2.{LIBRARY_EXT}".format(**locals()),
-            "-DPCRE_INCLUDE_DIR={DEPS_DIR}/install/pcre-{PCRE_VERSION}/include".format(**locals()),
-            "-DPCRE_PCREPOSIX_LIBRARY={DEPS_DIR}/install/pcre-{PCRE_VERSION}/lib/libpcreposix.{LIBRARY_EXT}".format(**locals()),
-            "-DPCRE_PCRE_LIBRARY={DEPS_DIR}/install/pcre-{PCRE_VERSION}/lib/libpcre.{LIBRARY_EXT}".format(**locals()),
-            "-DCMAKE_INSTALL_PREFIX={DEPS_DIR}/install/OpenCOLLADA/".format(**locals())
+            f"-DLIBXML2_INCLUDE_DIR={DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/include/libxml2",
+            f"-DLIBXML2_LIBRARIES={DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/lib/libxml2.{LIBRARY_EXT}",
+            f"-DPCRE_INCLUDE_DIR={DEPS_DIR}/install/pcre-{PCRE_VERSION}/include",
+            f"-DPCRE_PCREPOSIX_LIBRARY={DEPS_DIR}/install/pcre-{PCRE_VERSION}/lib/libpcreposix.{LIBRARY_EXT}",
+            f"-DPCRE_PCRE_LIBRARY={DEPS_DIR}/install/pcre-{PCRE_VERSION}/lib/libpcre.{LIBRARY_EXT}",
+            f"-DCMAKE_INSTALL_PREFIX={DEPS_DIR}/install/OpenCOLLADA/"
         ],
         download_url="https://github.com/KhronosGroup/OpenCOLLADA.git",
         download_name="OpenCOLLADA",
@@ -598,158 +565,154 @@ if "OpenCOLLADA" in targets:
         revision=OPENCOLLADA_VERSION
     )
 
-if "python" in targets:
+if "python" in targets and not USE_CURRENT_PYTHON_VERSION:
     # Python should not be built with -fvisibility=hidden, from experience that introduces segfaults
-    OLD_CXX_FLAGS=os.environ["CXXFLAGS"]
-    OLD_C_FLAGS=os.environ["CFLAGS"]
-    os.environ["CXXFLAGS"]=CXXFLAGS_MINIMAL
-    os.environ["CFLAGS"]=CFLAGS_MINIMAL
+    OLD_CXX_FLAGS = os.environ["CXXFLAGS"]
+    OLD_C_FLAGS = os.environ["CFLAGS"]
+    os.environ["CXXFLAGS"] = CXXFLAGS_MINIMAL
+    os.environ["CFLAGS"] = CFLAGS_MINIMAL
 
     # On OSX a dynamic python library is built or it would not be compatible
     # with the system python because of some threading initialization
-    PYTHON_CONFIGURE_ARGS=[]
-    if get_os() == "Darwin":
-        PYTHON_CONFIGURE_ARGS=["--disable-static", "--enable-shared"]
+    PYTHON_CONFIGURE_ARGS = []
+    if platform.system() == "Darwin":
+        PYTHON_CONFIGURE_ARGS = ["--disable-static", "--enable-shared"]
 
-    def get_python_unicode_confs(py_ver):
-        if py_ver < "3.3":
-            return [("--enable-unicode=ucs2",""), ("--enable-unicode=ucs4","u")]
-        else: return [("","")]
-
-    def PYTHON_VERSION_CONFS():
-        for v in PYTHON_VERSIONS:
-            for unicode_conf, abi_tag in get_python_unicode_confs(v):
-                yield v, unicode_conf, abi_tag
-
-    for PYTHON_VERSION, unicode_conf, abi_tag in PYTHON_VERSION_CONFS():
+    for PYTHON_VERSION in PYTHON_VERSIONS:
         try:
             build_dependency(
-                "python-{PYTHON_VERSION}{abi_tag}".format(**locals()),
+                f"python-{PYTHON_VERSION}",
                 "autoconf",
-                PYTHON_CONFIGURE_ARGS + [unicode_conf],
-                "http://www.python.org/ftp/python/{PYTHON_VERSION}/".format(**locals()),
-                "Python-{PYTHON_VERSION}.tgz".format(**locals())
+                PYTHON_CONFIGURE_ARGS,
+                f"http://www.python.org/ftp/python/{PYTHON_VERSION}/",
+                f"Python-{PYTHON_VERSION}.tgz"
             )
-        except Exception as e:
-            pyver2 = PYTHON_VERSION[:PYTHON_VERSION.rfind('.')]
-            if os.path.exists("{DEPS_DIR}/install/python-{PYTHON_VERSION}{abi_tag}/bin/python{pyver2}".format(**locals())):
-                print("Installation partially failed")
-            else: raise e
+        except RuntimeError as e:
+            # Sometimes setting up modules such as pip/lzma can cause
+            # the python installer script to return a non zero exit
+            # code where actually the headers and dynamic libraries
+            # are installed correctly. This is all we need so we catch
+            # the exception and only reraise if a partially successful
+            # install is not detected.
+            if not os.path.exists(
+                os.path.join(DEPS_DIR, "install", f"python-{PYTHON_VERSION}")
+            ):
+                raise e
 
-    os.environ["CXXFLAGS"]=OLD_CXX_FLAGS
-    os.environ["CFLAGS"]=OLD_C_FLAGS
+    os.environ["CXXFLAGS"] = OLD_CXX_FLAGS
+    os.environ["CFLAGS"] = OLD_C_FLAGS
 
 if "boost" in targets:
     str_concat = lambda prefix: lambda postfix: "" if postfix.strip() == "" else "=".join((prefix, postfix.strip()))
     build_dependency(
-        "boost-{BOOST_VERSION}".format(**locals()),
+        f"boost-{BOOST_VERSION}",
         mode="bjam",
         build_tool_args=[
-            "--stagedir={DEPS_DIR}/install/boost-{BOOST_VERSION}".format(**locals()),
+            f"--stagedir={DEPS_DIR}/install/boost-{BOOST_VERSION}",
             "--with-system",
             "--with-program_options",
             "--with-regex",
             "--with-thread",
             "--with-date_time",
             "--with-iostreams",
-            "link={LINK_TYPE}".format(**locals())
+            f"link={LINK_TYPE}"
                                                                          ] + \
             BOOST_ADDRESS_MODEL                                            + \
             list(map(str_concat("cxxflags"), CXXFLAGS.strip().split(' '))) + \
             list(map(str_concat("linkflags"), LDFLAGS.strip().split(' '))) + \
             ["stage", "-s", "NO_BZIP2=1"],
         download_url=BOOST_LOCATION,
-        download_name="boost_{BOOST_VERSION_UNDERSCORE}.tar.bz2".format(**locals())
+        download_name=f"boost_{BOOST_VERSION_UNDERSCORE}.tar.bz2"
     )
     
 if "cgal" in targets:
     build_dependency(
-        name="gmp-%s" % (GMP_VERSION,),
+        name=f"gmp-{GMP_VERSION}",
         mode="autoconf",
         build_tool_args=["--disable-shared", "--with-pic"],
         download_url="https://ftp.gnu.org/gnu/gmp/",
-        download_name="gmp-{GMP_VERSION}.tar.bz2".format(**locals())
+        download_name=f"gmp-{GMP_VERSION}.tar.bz2"
     )
     
     build_dependency(
-        name="mpfr-%s" % (MPFR_VERSION,),
+        name=f"mpfr-{MPFR_VERSION}",
         mode="autoconf",
-        build_tool_args=["--disable-shared", "--with-gmp={DEPS_DIR}/install/gmp-{GMP_VERSION}".format(**locals())],
-        download_url="http://www.mpfr.org/mpfr-{MPFR_VERSION}/".format(**locals()),
-        download_name="mpfr-{MPFR_VERSION}.tar.bz2".format(**locals())
+        build_tool_args=["--disable-shared", f"--with-gmp={DEPS_DIR}/install/gmp-{GMP_VERSION}"],
+        download_url=f"http://www.mpfr.org/mpfr-{MPFR_VERSION}/",
+        download_name=f"mpfr-{MPFR_VERSION}.tar.bz2"
     )
     
     build_dependency(
-        name="cgal-{CGAL_VERSION}".format(**locals()),
+        name=f"cgal-{CGAL_VERSION}",
         mode="cmake",
         build_tool_args=[
-            "-DGMP_LIBRARIES=%s/install/gmp-%s/lib/libgmp.a" % (DEPS_DIR, GMP_VERSION),
-            "-DGMP_INCLUDE_DIR=%s/install/gmp-%s/include" % (DEPS_DIR, GMP_VERSION),
-            "-DMPFR_LIBRARIES=%s/install/mpfr-%s/lib/libmpfr.a" % (DEPS_DIR, MPFR_VERSION),
-            "-DMPFR_INCLUDE_DIR=%s/install/mpfr-%s/include" % (DEPS_DIR, MPFR_VERSION),
-            "-DBoost_INCLUDE_DIR=%s/install/boost-%s" % (DEPS_DIR, BOOST_VERSION),
-            "-DCMAKE_INSTALL_PREFIX=%s/install/cgal-%s/" % (DEPS_DIR, CGAL_VERSION),
+            f"-DGMP_LIBRARIES={DEPS_DIR}/install/gmp-{GMP_VERSION}/lib/libgmp.a",
+            f"-DGMP_INCLUDE_DIR={DEPS_DIR}/install/gmp-{GMP_VERSION}/include",
+            f"-DMPFR_LIBRARIES={DEPS_DIR}/install/mpfr-{MPFR_VERSION}/lib/libmpfr.a" ,
+            f"-DMPFR_INCLUDE_DIR={DEPS_DIR}/install/mpfr-{MPFR_VERSION}/include",
+            f"-DBoost_INCLUDE_DIR={DEPS_DIR}/install/boost-{BOOST_VERSION}",
+            f"-DCMAKE_INSTALL_PREFIX={DEPS_DIR}/install/cgal-{CGAL_VERSION}/",
             "-DCGAL_HEADER_ONLY=On",            
             "-DBUILD_SHARED_LIBS=Off"
         ],
         download_url="https://github.com/CGAL/cgal.git",
         download_name="cgal",
         download_tool=download_tool_git,
-        revision="v{CGAL_VERSION}".format(**locals())
+        revision=f"v{CGAL_VERSION}"
     )
     
 cecho("Building IfcOpenShell:", GREEN)
 
-IFCOS_DIR=os.path.join(DEPS_DIR, "build", "ifcopenshell")
-if os.path.exists(IFCOS_DIR):
-    shutil.rmtree(IFCOS_DIR)
-os.makedirs(IFCOS_DIR)
-
+IFCOS_DIR = os.path.join(DEPS_DIR, "build", "ifcopenshell")
+if os.environ.get("NO_CLEAN", "").lower() not in {"1", "on", "true"}:
+    if os.path.exists(IFCOS_DIR):
+        shutil.rmtree(IFCOS_DIR)
+os.makedirs(IFCOS_DIR, exist_ok=True)
 executables_dir = os.path.join(IFCOS_DIR, "executables")
-if not os.path.exists(executables_dir):
-    os.makedirs(executables_dir)
+os.makedirs(executables_dir, exist_ok=True)
 
 logger.info("\rConfiguring executables...")
 
 OFF_ON = ["OFF", "ON"]
 
-exec_args=[
-    "-DBUILD_IFCGEOM="                +OFF_ON["IfcGeom" in targets],
-    "-DBUILD_GEOMSERVER="             +OFF_ON["IfcGeomServer" in targets],
-    "-DBUILD_CONVERT="                +OFF_ON["IfcConvert" in targets],
+exec_args = [
+    "-DBUILD_IFCGEOM="                 +OFF_ON["IfcGeom" in targets],
+    "-DBUILD_GEOMSERVER="              +OFF_ON["IfcGeomServer" in targets],
+    "-DBUILD_CONVERT="                 +OFF_ON["IfcConvert" in targets],
     "-DBUILD_IFCPYTHON="               "OFF",
-    "-DCMAKE_INSTALL_PREFIX="          "{DEPS_DIR}/install/ifcopenshell".format(**locals()),
+    "-DCMAKE_INSTALL_PREFIX="          f"{DEPS_DIR}/install/ifcopenshell",
 ]
 
-cmake_args=[
+cmake_args = [
     "-DUSE_MMAP="                      "OFF",
     "-DBUILD_EXAMPLES="                "OFF",
-    "-DBUILD_SHARED_LIBS="            +OFF_ON[not BUILD_STATIC],
-    "-DBOOST_ROOT="                    "{DEPS_DIR}/install/boost-{BOOST_VERSION}".format(**locals()),
+    "-DBUILD_SHARED_LIBS="             +OFF_ON[not BUILD_STATIC],
+    "-DBOOST_ROOT="                    f"{DEPS_DIR}/install/boost-{BOOST_VERSION}",
     "-DGLTF_SUPPORT="                  "ON",
-    "-DJSON_INCLUDE_DIR="              "{DEPS_DIR}/install/json".format(**locals()),
+    "-DJSON_INCLUDE_DIR="              f"{DEPS_DIR}/install/json",
     "-DBoost_NO_BOOST_CMAKE="          "On",
 ]
 
 if "cgal" in targets:
     cmake_args.extend([
-        "-DCGAL_INCLUDE_DIR="          "{DEPS_DIR}/install/cgal-{CGAL_VERSION}/include".format(**locals()),
-        "-DGMP_INCLUDE_DIR="           "{DEPS_DIR}/install/gmp-{GMP_VERSION}/include".format(**locals()),
-        "-DGMP_LIBRARY_DIR="           "{DEPS_DIR}/install/gmp-{GMP_VERSION}/lib".format(**locals()),
-        "-DMPFR_INCLUDE_DIR="          "{DEPS_DIR}/install/mpfr-{MPFR_VERSION}/include".format(**locals()),
-        "-DMPFR_LIBRARY_DIR="          "{DEPS_DIR}/install/mpfr-{MPFR_VERSION}/lib".format(**locals()),
+        "-DCGAL_INCLUDE_DIR="          f"{DEPS_DIR}/install/cgal-{CGAL_VERSION}/include",
+        "-DGMP_INCLUDE_DIR="           f"{DEPS_DIR}/install/gmp-{GMP_VERSION}/include",
+        "-DGMP_LIBRARY_DIR="           f"{DEPS_DIR}/install/gmp-{GMP_VERSION}/lib",
+        "-DMPFR_INCLUDE_DIR="          f"{DEPS_DIR}/install/mpfr-{MPFR_VERSION}/include",
+        "-DMPFR_LIBRARY_DIR="          f"{DEPS_DIR}/install/mpfr-{MPFR_VERSION}/lib",
     ])
 
 if "occ" in targets and USE_OCCT:
-    occ_include_dir =                  "{DEPS_DIR}/install/occt-{OCCT_VERSION}/include/opencascade".format(**locals())
-    occ_library_dir =                  "{DEPS_DIR}/install/occt-{OCCT_VERSION}/lib".format(**locals())
+    occ_include_dir =                  f"{DEPS_DIR}/install/occt-{OCCT_VERSION}/include/opencascade"
+    occ_library_dir =                  f"{DEPS_DIR}/install/occt-{OCCT_VERSION}/lib"
     cmake_args.extend([
         "-DOCC_INCLUDE_DIR="           +occ_include_dir,
         "-DOCC_LIBRARY_DIR="           +occ_library_dir
     ])
+
 elif "occ" in targets:
-    occ_include_dir =                  "{DEPS_DIR}/install/oce-{OCE_VERSION}/include/oce".format(**locals())
-    occ_library_dir =                  "{DEPS_DIR}/install/oce-{OCE_VERSION}/lib"
+    occ_include_dir =                  f"{DEPS_DIR}/install/oce-{OCE_VERSION}/include/oce"
+    occ_library_dir =                  f"{DEPS_DIR}/install/oce-{OCE_VERSION}/lib"
     cmake_args.extend([
         "-DOCC_INCLUDE_DIR="           +occ_include_dir,
         "-DOCC_LIBRARY_DIR="           +occ_library_dir
@@ -757,82 +720,98 @@ elif "occ" in targets:
 
 if "OpenCOLLADA" in targets:
     cmake_args.extend([
-        "-DOPENCOLLADA_INCLUDE_DIR="   "{DEPS_DIR}/install/OpenCOLLADA/include/opencollada".format(**locals()),
-        "-DOPENCOLLADA_LIBRARY_DIR="   "{DEPS_DIR}/install/OpenCOLLADA/lib/opencollada".format(**locals())
+        "-DOPENCOLLADA_INCLUDE_DIR="   f"{DEPS_DIR}/install/OpenCOLLADA/include/opencollada",
+        "-DOPENCOLLADA_LIBRARY_DIR="   f"{DEPS_DIR}/install/OpenCOLLADA/lib/opencollada"
+    ])
+else:
+    cmake_args.extend([
+        "-DCOLLADA_SUPPORT="           "Off",
     ])
 
 if "pcre" in targets:
     cmake_args.append(
-        "-DPCRE_LIBRARY_DIR="          "{DEPS_DIR}/install/pcre-{PCRE_VERSION}/lib".format(**locals())
+        "-DPCRE_LIBRARY_DIR="          f"{DEPS_DIR}/install/pcre-{PCRE_VERSION}/lib"
     )
 
 if "libxml2" in targets:
     cmake_args.extend([
-        "-DLIBXML2_INCLUDE_DIR="       "{DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/include/libxml2".format(**locals()),
-        "-DLIBXML2_LIBRARIES="         "{DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/lib/libxml2.{LIBRARY_EXT}".format(**locals())
+        "-DLIBXML2_INCLUDE_DIR="       f"{DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/include/libxml2",
+        "-DLIBXML2_LIBRARIES="         f"{DEPS_DIR}/install/libxml2-{LIBXML2_VERSION}/lib/libxml2.{LIBRARY_EXT}"
     ])
 
 if "hdf5" in targets:
     cmake_args.extend([
-        "-DHDF5_INCLUDE_DIR="          "{DEPS_DIR}/install/hdf5-{HDF5_VERSION}/include".format(**locals()),
-        "-DHDF5_LIBRARY_DIR="          "{DEPS_DIR}/install/hdf5-{HDF5_VERSION}/lib".format(**locals())
+        "-DHDF5_INCLUDE_DIR="          f"{DEPS_DIR}/install/hdf5-{HDF5_VERSION}/include",
+        "-DHDF5_LIBRARY_DIR="          f"{DEPS_DIR}/install/hdf5-{HDF5_VERSION}/lib"
     ])
 
 run_cmake("", exec_args + cmake_args, cmake_dir=CMAKE_DIR, cwd=executables_dir)
 
 logger.info("\rBuilding executables...   ")
 
-run([make, "-j{IFCOS_NUM_BUILD_PROCS}".format(**locals())], cwd=executables_dir)
+run([make, f"-j{IFCOS_NUM_BUILD_PROCS}"], cwd=executables_dir)
 run([make, "install/strip" if BUILD_CFG == "Release" else "install"], cwd=executables_dir)
 
 if "IfcOpenShell-Python" in targets:
-
     # On OSX the actual Python library is not linked against.
-    ADDITIONAL_ARGS=""
-    if get_os() == "Darwin":
-        ADDITIONAL_ARGS="-Wl,-flat_namespace,-undefined,suppress"
+    ADDITIONAL_ARGS = ""
+    if platform.system() == "Darwin":
+        ADDITIONAL_ARGS = "-Wl,-flat_namespace,-undefined,suppress"
 
-    os.environ["CXXFLAGS"]="%s %s" % (CXXFLAGS_MINIMAL, ADDITIONAL_ARGS)
-    os.environ["CFLAGS"]="%s %s" % (CFLAGS_MINIMAL, ADDITIONAL_ARGS)
-    os.environ["LDFLAGS"]="%s %s" % (LDFLAGS, ADDITIONAL_ARGS)
+    os.environ["CXXFLAGS"] = f"{CXXFLAGS_MINIMAL} {ADDITIONAL_ARGS}"
+    os.environ["CFLAGS"] = f"{CFLAGS_MINIMAL} {ADDITIONAL_ARGS}"
+    os.environ["LDFLAGS"] = f"{LDFLAGS} {ADDITIONAL_ARGS}"
 
-    for PYTHON_VERSION, _, TAG in PYTHON_VERSION_CONFS():
-        logger.info("\rConfiguring python {PYTHON_VERSION}{TAG} wrapper...".format(**locals()))
+    python_dir = os.path.join(IFCOS_DIR, "pythonwrapper")
+    os.makedirs(python_dir, exist_ok=True)
 
-        # python_dir = os.path.join(IFCOS_DIR, "python-{PYTHON_VERSION}{TAG}".format(**locals()))
-        python_dir = os.path.join(IFCOS_DIR, "pythonwrapper")
-        if not os.path.exists(python_dir):
-            os.makedirs(python_dir)
+    def compile_python_wrapper(python_version, python_library, python_include, python_executable):
+        logger.info(f"\rConfiguring python {python_version} wrapper...")
 
         cache_path = os.path.join(python_dir, "CMakeCache.txt")
         if os.path.exists(cache_path):
-            os.unlink(cache_path)
+            os.remove(cache_path)
 
-        PYTHON_LIBRARY=run([bash, "-c", "ls    {DEPS_DIR}/install/python-{PYTHON_VERSION}{TAG}/lib/libpython*.*".format(**locals())])
-        PYTHON_INCLUDE=run([bash, "-c", "ls -d {DEPS_DIR}/install/python-{PYTHON_VERSION}{TAG}/include/python*".format(**locals())])
-        PYTHON_EXECUTABLE=os.path.join(DEPS_DIR, "install", "python-{PYTHON_VERSION}{TAG}".format(**locals()), "bin", "python{PYTHON_VERSION[0]}".format(**locals()))
-        os.environ["PYTHON_LIBRARY_BASENAME"]=os.path.basename(PYTHON_LIBRARY)
+        os.environ["PYTHON_LIBRARY_BASENAME"] = os.path.basename(python_library)
 
         run_cmake("",
             cmake_args + [
-                "-DPYTHON_LIBRARY="          +PYTHON_LIBRARY,
-                "-DPYTHON_EXECUTABLE="       +PYTHON_EXECUTABLE,
-                "-DPYTHON_INCLUDE_DIR="      +PYTHON_INCLUDE,
-                "-DSWIG_EXECUTABLE="         "{DEPS_DIR}/install/swig/bin/swig".format(**locals()),
-                "-DCMAKE_INSTALL_PREFIX="    "{DEPS_DIR}/install/ifcopenshell/tmp".format(**locals()),
+                "-DPYTHON_LIBRARY="          +python_library,
+                "-DPYTHON_EXECUTABLE="       +python_executable,
+                "-DPYTHON_INCLUDE_DIR="      +python_include,
+                "-DSWIG_EXECUTABLE="         f"{DEPS_DIR}/install/swig/bin/swig",
+                "-DCMAKE_INSTALL_PREFIX="    f"{DEPS_DIR}/install/ifcopenshell/tmp",
+                "-DUSERSPACE_PYTHON_PREFIX=" +["Off", "On"][os.environ.get("PYTHON_USER_SITE", "").lower() in {"1", "on", "true"}]
             ], cmake_dir=CMAKE_DIR, cwd=python_dir)
-        
-        logger.info("\rBuilding python %s%s wrapper...   " % (PYTHON_VERSION, TAG))
 
-        run([make, "-j%s" % (IFCOS_NUM_BUILD_PROCS,), "_ifcopenshell_wrapper"], cwd=python_dir)
+        logger.info(f"\rBuilding python {python_version} wrapper...   ")
+
+        run([make, f"-j{IFCOS_NUM_BUILD_PROCS}", "_ifcopenshell_wrapper"], cwd=python_dir)
         run([make, "install/local"], cwd=os.path.join(python_dir, "ifcwrap"))
 
-        module_dir = os.path.dirname(run([PYTHON_EXECUTABLE, "-c", "import inspect, ifcopenshell; print(inspect.getfile(ifcopenshell))"]))
+        module_dir = os.path.dirname(run([python_executable, "-c", "import inspect, ifcopenshell; print(inspect.getfile(ifcopenshell))"]))
 
-        if get_os() != "Darwin":
+        if platform.system() != "Darwin":
             # TODO: This symbol name depends on the Python version?
             run([strip, "-s", "-K", "PyInit__ifcopenshell_wrapper", "_ifcopenshell_wrapper.so"], cwd=module_dir)
+        return module_dir
 
-        run([cp, "-R", module_dir, os.path.join(DEPS_DIR, "install", "ifcopenshell", "python-%s%s" % (PYTHON_VERSION, TAG))])
+
+    if USE_CURRENT_PYTHON_VERSION:
+        python_info = sysconfig.get_paths()
+        python_lib = os.path.join(
+            sysconfig.get_config_var('LIBDIR'), 
+            sysconfig.get_config_var('multiarchsubdir').replace("/", ""), 
+            sysconfig.get_config_var("INSTSONAME")
+        )
+        compile_python_wrapper(platform.python_version(), python_lib, python_info["include"], sys.executable)
+    else:
+        for python_version in PYTHON_VERSIONS:
+            python_library = run([bash, "-c", f"ls    {DEPS_DIR}/install/python-{python_version}/lib/libpython*.*"])
+            python_include = run([bash, "-c", f"ls -d {DEPS_DIR}/install/python-{python_version}/include/python*"])
+            python_executable = os.path.join(DEPS_DIR, "install", f"python-{python_version}", "bin", f"python{python_version[0]}")
+
+            module_dir = compile_python_wrapper(python_version, python_library, python_include, python_executable)
+            run([cp, "-R", module_dir, os.path.join(DEPS_DIR, "install", "ifcopenshell", f"python-{python_version}")])
 
 logger.info("\rBuilt IfcOpenShell...\n\n")

src/bcf/src/bcf/v3/bcfxml.py

@@ -645,9 +645,10 @@ class BcfXml:
 
     def get_comments(self, guid):
         comments = {}
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
         if "Comments" not in data["Topics"]:
             return comments
-        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+
         for item in data["Topic"]["Comments"].get("Comment", []):
             comment = bcf.v3.data.Comment()
             mandatory_keys = {
@@ -675,9 +676,9 @@ class BcfXml:
 
     def get_viewpoints(self, guid):
         viewpoints = {}
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
         if "Viewpoints" not in data["Topic"]:
             return viewpoints
-        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
         for item in data["Topic"]["Viewpoints"]:
             viewpoint = self.get_viewpoint(item, guid)
             viewpoints[viewpoint.guid] = viewpoint

src/bcf/src/bcf/v3/data.py

@@ -46,7 +46,7 @@ class RelatedTopic:
 
 class HeaderFile:
     def __init__(self):
-        self.file_name = ""
+        self.filename = ""
         self.date = None
         self.reference = ""
         self.ifc_project = None

src/blenderbim/Makefile

@@ -93,7 +93,7 @@ endif
 	cp -r blenderbim/* dist/blenderbim/
 
 	# Provides IfcOpenShell Python functionality
-	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcblender-python-$(PYNUMBER)-v0.7.0-9853d3d-$(PLATFORM)64.zip
+	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcblender-python-$(PYNUMBER)-v0.7.0-b9ea741-$(PLATFORM)64.zip
 	cd dist/working && unzip ifcblender*
 	cp -r dist/working/io_import_scene_ifc/ifcopenshell dist/blenderbim/libs/site/packages/
 
@@ -133,6 +133,8 @@ endif
 	cp -r dist/working/IfcOpenShell-0.7.0/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/
+	# Provides IFCCityJSON functionality
+	cp -r dist/working/IfcOpenShell-0.7.0/src/ifccityjson dist/blenderbim/libs/site/packages/
 	rm -rf dist/working
 
 	# Provides Mustache templating in construction documentation
@@ -240,6 +242,30 @@ endif
 	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 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
+
+	# Required by IFCCityJSON
+	mkdir dist/working
+	cd dist/working && python -m venv env
+	cd dist/working && mkdir site-packages
+	cd dist/working && . env/bin/activate && pip install cjio --target=./site-packages
+	cd dist/working/site-packages/ && rm -r *dist-info*
+	cp -r dist/working/site-packages/* dist/blenderbim/libs/site/packages/
+	rm -rf dist/working
+
 	# Required by IFCClash
 	mkdir dist/working
 	cd dist/working && wget $(HPPFCL_URL)
@@ -345,7 +371,7 @@ endif
 	cd dist/working/ && patch ../blenderbim/libs/site/packages/behave/runner_util.py < runner_util.patch
 	rm -rf dist/working
 
-	# Required by ids
+	# Required by ids - uh, not any more, but I'm trying it out in the drawing module
 	mkdir dist/working
 	cd dist/working && wget $(LXML_URL)
 	cd dist/working && cp *.whl lxml.zip && unzip lxml.zip
@@ -429,6 +455,39 @@ endif
 	cd dist/working/olca-ipc-0.0.10/ && cp -r olca ../../blenderbim/libs/site/packages/
 	rm -rf dist/working
 
+	# Provides Brickschema fucntionality
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/ca/37/8309da9a72407d2f5eb5489c197ac3cfe96ee3ccba1902d2a0ecc7843f92/brickschema-0.5.1.tar.gz
+	cd dist/working && tar -xzvf brickschema*
+	# This is an evil hack because we don't want to bundle flask
+	echo "" > dist/working/brickschema-0.5.1/brickschema/web.py
+	cd dist/working/brickschema-0.5.1/ && cp -r brickschema ../../blenderbim/libs/site/packages/
+	# For now lets bundle the latest nightly schema
+	cd dist/working && wget https://github.com/BrickSchema/Brick/releases/download/nightly/Brick.ttl
+	cd dist/working && cp Brick.ttl ../../blenderbim/bim/schema/Brick.ttl
+	rm -rf dist/working
+
+	# Required by brickschema
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/c7/22/37bb938be8e5c20d443b0c9ba0a243573b671b01739efb0a19f81bc5b470/pyshacl-0.17.2.tar.gz
+	cd dist/working && tar -xzvf pyshacl*
+	cd dist/working/pyshacl-0.17.2/ && cp -r pyshacl ../../blenderbim/libs/site/packages/
+	rm -rf dist/working
+
+	# Required by brickschema
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/d2/a7/be8244688bfcee37c23733ab4fe8e6afa6d4403bd2674a3ae7bd2cecc77b/rdflib-6.0.2.tar.gz
+	cd dist/working && tar -xzvf rdflib*
+	cd dist/working/rdflib-6.0.2/ && cp -r rdflib ../../blenderbim/libs/site/packages/
+	rm -rf dist/working
+
+	# Required by brickschema
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/7d/c7/208aece36279e4f1236e437119358786e39530ecc1719d4e1afeddba5288/owlrl-6.0.2.tar.gz
+	cd dist/working && tar -xzvf owlrl*
+	cd dist/working/owlrl-6.0.2/ && cp -r owlrl ../../blenderbim/libs/site/packages/
+	rm -rf dist/working
+
 	cd dist/blenderbim && sed -i "s/999999/$(VERSION)/" __init__.py
 	cd dist && zip -r blenderbim-$(VERSION)-$(PYVERSION)-$(PLATFORM).zip ./*
 	rm -rf dist/blenderbim
@@ -464,7 +523,7 @@ coverage:
 
 .PHONY: license
 license:
-	copyright-header --license GPL3 --copyright-holder "Dion Moult <dion@thinkmoult.com>" --copyright-year "2021" --copyright-software "BlenderBIM Add-on" --copyright-software-description "OpenBIM Blender Add-on" -a ./ -o ./
+	copyright-header --license GPL3 --copyright-holder "Dion Moult <dion@thinkmoult.com>" --copyright-year "2022" --copyright-software "BlenderBIM Add-on" --copyright-software-description "OpenBIM Blender Add-on" -a ./ -o ./
 
 .PHONY: clean
 clean:

src/blenderbim/README.md

@@ -1,127 +1,5 @@
-# Blender BIM IFC
+# BlenderBIM Add-on
 
-_Under heavy development!_
+An add-on to Blender to allow BIM functionality.
 
-Let's use Blender to create BIM models, because why not?
-
-## Features
-
- - IFC4 is a first-class citizen. IFC4 has been an ISO standard since 2013, with
-   the latest published in 2018. It contains many more features than IFC2X3,
-   published back in 2005.
- - Available for Windows, Mac, and Linux!
- - Use open-source Blender 2.8 to do digital modeling! Used by NASA, Hollywood,
-   and Ubisoft, Blender allows real-time modeling in rendered view, animations,
-   file linking, proxy objects, Blender Cloud collaboration, lighting analysis,
-   CFD, energy modeling, and a huge ecosystem of add-ons with a thriving
-   community. No licensing, and with a strong Python API to integrate into your
-   custom workflow.
- - Create complex spatial structures with multiple sites, buildings, facilities,
-   bridges, and building parts. Sites can be broken down into sub-sites and
-   multiple buildings per site. You can categorise different floors to different
-   buildings.
- - Classify any geometry as any IFC type. Just because it is a wall doesn't
-   mean you should be limited to modeling it in a certain way. Easily change
-   from one type to another, switch relationships and aggregations, reuse or
-   even remove geometry altogether, without damaging your geometry or breaking
-   your BIM model.
- - Use collections to create element compositions and decompositions with full
-   control over the classifications of their parts. Most BIM programs don't give
-   this flexibility. Create collection instances to efficiently duplicate
-   composite objects.
- - Allow BIM objects to instance a shared geometric representations. This allows
-   you to place the same shape in multiple objects without drastically
-   increasing your filesize.
- - Provide a custom value to any simple IFC attribute of an IFC product.
- - Create product types that regular IFC products can inherit attributes from.
- - Define your own property sets with control over exactly how the data in the
-   property sets are stored using property set template definitions which you
-   can download or create yourself. Property sets can apply to both types and
-   objects, and object property sets can selectively override type property
-   sets.
- - Applies array modifiers to create instances.
- - Basic quantity take-off support for costing.
- - Settings to toggle export of quantities or geometric representations.
-   Exporting IFC data without geometric representations is much faster and a
-   fraction of the filesize.
- - Maintain `GlobalId` between exports, so that you can manipulate the IFC
-   reliably in other software while making changes.
- - Not all objects need full solid geometry. Create representations as 2D or 3D
-   curves / wireframes for rapid and lightweight BIM development.
- - Create map conversions and coordinate reference system definitions to link
-   BIM to GIS.
- - Export basic materials with surface and diffuse colours for representation.
-   You can also link materials to an externally defined file, such as a `.blend`
-   Cycles material, V-Ray material, or even Radiance material for lighting
-   simulation.
- - Switch between different types of metric units when modeling.
- - Model multiple representations for different purposes for a single BIM
-   object or type, such as footprints, axis, reference, or clearance geometry.
-   You can export just the type of representation required for your usecase, or
-   export multiple for the user to choose from.
- - Record qualitative objectives such as design intentions, health and safety
-   strategies, or code compliance, performance solutions, and more, in the BIM
-   model and directly associate them to objects or types.
- - Classify objects and types to different classification systems such as
-   Uniclass, Omniclass, or your custom system.
- - Associate external document files such as plans, brochures, specifications,
-   warranties, or anything to objects and types.
- - Specify swept solid geometries, allowing you to round-trip geometry
-   manipulation with other BIM software which have more limited geometric tools,
-   like Revit.
- - Create material layer sets, for objects which have materials in predefined
-   layers with thicknesses.
- - Create material constituent sets, for objects which are made up of
-   arbitrarily mixed ingredients.
- - Specify nested and hosted element relationships.
- - Specify predefined door attributes as defined in the IFC4 specification.
- - Specify predefined window attributes as defined in the IFC4 specification.
- - Specify surface styles either defined as part of a material or assigned
-   directly to an object's representation.
- - Colour coding by IFC class to visually spot mistakes
-
-Some more experimental features:
-
- - Cut sections for documentation with OpenCascade
- - Export gbXML files that are linked to your IFC file to do energy analysis
- - QA module to generate Gherkin unit tests to validate your BIM models
- - HTML formatter to generate reports from QA results
- - COBie spreadsheet extraction to import into CAFM systems
-
-## Demo
-
-[See demo video](https://www.youtube.com/watch?v=iD3v3eu2AjY)
-
-It's only just started, so everything can and will change. But if you want to
-check it out:
-
- 1. Install [Blender](https://www.blender.org/) 64-bit version.
- 2. Download the latest packaged version of Blender BIM from
-    [here](https://blenderbim.org/builds/).
- 3. Launch Blender. Go to `Edit->Preferences->Add-ons->Install...`. Browse to
-    the downloaded `.zip` file from step 2.
- 4. Enable the checkbox next to the Import-Export IFC Blender plugin which will
-    show up.
- 5. All done! You will find an import and export IFC option in the `File` menu.
-
-By default, Blender BIM will export whatever you have selected. The objects you
-have selected _must_ belong in an `IfcProject` and spatially contained, such as
-witihn an `IfcBuilding`. It must also follow the naming convention. Please see
-the screenshot below for an example scene.
-
-A naming convention of `IfcClass/IfcName` is enforced. If you name your object
-`IfcWall/Foo`, it will turn into an `IfcWall` with the name attribute set to
-`Foo`. You can override object attributes using Blender's `Custom Properties`.
-Your objects must live in a top level `Collection` defined as a context class,
-usually something like `IfcProject/Foo`. You can then nest spatial structures
-underneath to create a hierarchy.
-
-## Pictures
-
-![UI](https://aws1.discourse-cdn.com/business6/uploads/buildingsmart1/original/1X/ce820c3ee22adcffae59b40f98ff23379f7e3547.png)
-
-![Blender screenshot](blender-screenshot.png)
-
-... this Blender files creates this IFC file ...
-
-![IfcOpenShell screenshot](ifcopenshell-screenshot.png)
+More information on the [BlenderBIM Add-on website](https://blenderbim.org).

src/blenderbim/blenderbim/bim/__init__.py

@@ -18,7 +18,7 @@
 
 import bpy
 import importlib
-from . import handler, ui, prop, operator
+from . import handler, ui, prop, operator, helper
 
 modules = {
     "project": None,
@@ -30,6 +30,7 @@ modules = {
     "georeference": None,
     "context": None,
     "drawing": None,
+    "misc": None,
     "attribute": None,
     "type": None,
     "spatial": None,
@@ -42,6 +43,7 @@ modules = {
     "sequence": None,
     "group": None,
     "system": None,
+    "brick": None,
     "structural": None,
     "boundary": None,
     "profile": None,
@@ -52,6 +54,7 @@ modules = {
     "pset": None,
     "qto": None,
     "classification": None,
+    "library": None,
     "constraint": None,
     "document": None,
     "pset_template": None,
@@ -61,33 +64,33 @@ modules = {
     "bimtester": None,
     "diff": None,
     "patch": None,
+    "gis": None,
     "covetool": None,
     "augin": None,
     "debug": None,
 }
 
+
 for name in modules.keys():
     modules[name] = importlib.import_module(f"blenderbim.bim.module.{name}")
 
+
 classes = [
     operator.OpenUri,
     operator.SelectDataDir,
     operator.SelectSchemaDir,
     operator.SelectIfcFile,
-    operator.ExportIFC,
-    operator.ImportIFC,
     operator.OpenUpstream,
     operator.AddSectionPlane,
     operator.RemoveSectionPlane,
     operator.ReloadIfcFile,
     operator.AddIfcFile,
     operator.RemoveIfcFile,
-    operator.SetOverrideColour,
-    operator.SetViewportShadowFromSun,
-    operator.SnapSpacesTogether,
-    operator.OverrideDelete,
+    operator.ConfigureVisibility,
     prop.StrProperty,
+    prop.ObjProperty,
     prop.Attribute,
+    prop.ModuleVisibility,
     prop.BIMProperties,
     prop.IfcParameter,
     prop.PsetQto,
@@ -99,20 +102,26 @@ classes = [
     ui.BIM_UL_generic,
     ui.BIM_UL_topics,
     ui.BIM_ADDON_preferences,
+    #scene panel groups -->
+    ui.BIM_PT_project_and_template_setup,
+    ui.BIM_PT_utilities,
+    ui.BIM_PT_collaboration_and_data_exchange,
+    ui.BIM_PT_geometry_and_spatial_structure,
+    ui.BIM_PT_4D5D,
+    ui.BIM_PT_structural,
+    ui.BIM_PT_misc,
+    ui.BIM_PT_quality_control,
+    #object panel groups -->
+    ui.BIM_PT_geometry_and_spatial_structure_object,
+    ui.BIM_PT_object_attributes_properties_and_relationships,
+    ui.BIM_PT_utilities_object,
+    ui.BIM_PT_misc_object
 ]
 
 for mod in modules.values():
     classes.extend(mod.classes)
 
 
-def menu_func_export(self, context):
-    self.layout.operator(operator.ExportIFC.bl_idname, text="Industry Foundation Classes (.ifc/.ifczip/.ifcjson)")
-
-
-def menu_func_import(self, context):
-    self.layout.operator(operator.ImportIFC.bl_idname, text="Industry Foundation Classes (.ifc/.ifczip/.ifcxml)")
-
-
 def on_register(scene):
     handler.setDefaultProperties(scene)
     bpy.app.handlers.depsgraph_update_post.remove(on_register)
@@ -129,8 +138,6 @@ def register():
     bpy.app.handlers.load_post.append(handler.setDefaultProperties)
     bpy.app.handlers.load_post.append(handler.loadIfcStore)
     bpy.app.handlers.save_pre.append(handler.ensureIfcExported)
-    bpy.types.TOPBAR_MT_file_export.append(menu_func_export)
-    bpy.types.TOPBAR_MT_file_import.append(menu_func_import)
     bpy.types.Scene.BIMProperties = bpy.props.PointerProperty(type=prop.BIMProperties)
     bpy.types.Object.BIMObjectProperties = bpy.props.PointerProperty(type=prop.BIMObjectProperties)
     bpy.types.Material.BIMObjectProperties = bpy.props.PointerProperty(type=prop.BIMObjectProperties)
@@ -151,8 +158,6 @@ def unregister():
     bpy.app.handlers.load_post.remove(handler.setDefaultProperties)
     bpy.app.handlers.load_post.remove(handler.loadIfcStore)
     bpy.app.handlers.save_pre.remove(handler.ensureIfcExported)
-    bpy.types.TOPBAR_MT_file_export.remove(menu_func_export)
-    bpy.types.TOPBAR_MT_file_import.remove(menu_func_import)
     del bpy.types.Scene.BIMProperties
     del bpy.types.Object.BIMObjectProperties
     del bpy.types.Material.BIMObjectProperties

src/blenderbim/blenderbim/bim/data/styles/default.css

@@ -19,7 +19,8 @@
  */
 
 * { stroke-linecap: round; stroke-linejoin: round; }
-*[id] { fill: black; stroke: black; stroke-linecap: 'round'; stroke-width: 0.35; }
+text { fill: black; stroke: none; }
+.cut { fill: black; stroke: black; stroke-linecap: 'round'; stroke-width: 0.35; fill-rule: evenodd; }
 .projection { fill: white; stroke: black; stroke-linecap: 'round'; stroke-width: 0.25; }
 .annotation { fill: none; stroke: black; stroke-linecap: 'round'; stroke-width: 0.25; }
 .hidden { stroke-dasharray: 3, 2; }

src/blenderbim/blenderbim/bim/data/ui/presets.py

@@ -0,0 +1,214 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+presets = {
+    "Basic": ["project", "search", "bcf", "attribute", "spatial", "pset", "qto"],
+    "Admin": [
+        "project",
+        "search",
+        "bcf",
+        "root",
+        "unit",
+        "model",
+        "georeference",
+        "context",
+        "drawing",
+        "misc",
+        "attribute",
+        "type",
+        "spatial",
+        "void",
+        "aggregate",
+        "geometry",
+        "cobie",
+        "resource",
+        "cost",
+        "sequence",
+        "group",
+        "system",
+        "structural",
+        "boundary",
+        "profile",
+        "material",
+        "style",
+        "layer",
+        "owner",
+        "pset",
+        "qto",
+        "classification",
+        "constraint",
+        "document",
+        "pset_template",
+        "clash",
+        "lca",
+        "csv",
+        "bimtester",
+        "diff",
+        "patch",
+        "covetool",
+        "augin",
+        "debug",
+    ],
+    "BIM Coordination": [
+        "project",
+        "search",
+        "bcf",
+        "root",
+        "unit",
+        "georeference",
+        "attribute",
+        "type",
+        "spatial",
+        "void",
+        "aggregate",
+        "owner",
+        "pset",
+        "qto",
+        "clash",
+        "csv",
+        "bimtester",
+        "diff",
+        "patch",
+        "debug",
+    ],
+    "Architecture": [
+        "project",
+        "search",
+        "bcf",
+        "root",
+        "unit",
+        "model",
+        "georeference",
+        "context",
+        "drawing",
+        "misc",
+        "attribute",
+        "type",
+        "spatial",
+        "void",
+        "aggregate",
+        "geometry",
+        "group",
+        "system",
+        "boundary",
+        "profile",
+        "material",
+        "style",
+        "layer",
+        "owner",
+        "pset",
+        "qto",
+        "classification",
+        "pset_template",
+        "clash",
+        "csv",
+    ],
+    "Structural Engineering": [
+        "project",
+        "search",
+        "bcf",
+        "root",
+        "unit",
+        "model",
+        "georeference",
+        "context",
+        "drawing",
+        "misc",
+        "attribute",
+        "type",
+        "spatial",
+        "void",
+        "aggregate",
+        "geometry",
+        "group",
+        "system",
+        "structural",
+        "boundary",
+        "profile",
+        "material",
+        "style",
+        "layer",
+        "owner",
+        "pset",
+        "qto",
+        "classification",
+        "pset_template",
+        "clash",
+        "csv",
+    ],
+    "MEP": [
+        "project",
+        "search",
+        "bcf",
+        "root",
+        "unit",
+        "model",
+        "georeference",
+        "context",
+        "drawing",
+        "misc",
+        "attribute",
+        "type",
+        "spatial",
+        "void",
+        "aggregate",
+        "geometry",
+        "group",
+        "system",
+        "boundary",
+        "profile",
+        "material",
+        "style",
+        "layer",
+        "owner",
+        "pset",
+        "qto",
+        "classification",
+        "pset_template",
+        "clash",
+        "csv",
+    ],
+    "Quantity Surveying": ["project", "search", "attribute", "spatial", "void", "pset", "qto", "classification", "csv"],
+    "Model Enrichment": [
+        "project",
+        "search",
+        "root",
+        "attribute",
+        "spatial",
+        "pset",
+        "qto",
+        "pset_template",
+        "csv",
+        "patch",
+    ],
+    "3D Visualisation": ["project", "search", "bcf", "attribute", "spatial", "pset", "qto"],
+    "4D Scheduling": ["project", "search", "attribute", "spatial", "resource", "cost", "sequence", "pset", "qto"],
+    "5D Cost Management": [
+        "project",
+        "search",
+        "attribute",
+        "spatial",
+        "resource",
+        "cost",
+        "sequence",
+        "pset",
+        "qto",
+        "lca",
+    ],
+    "Facility Management": ["project", "search", "attribute", "spatial", "cobie", "pset", "qto", "lca"],
+}

src/blenderbim/blenderbim/bim/export_ifc.py

@@ -27,7 +27,12 @@ import addon_utils
 import ifcopenshell
 import ifcopenshell.api
 import ifcopenshell.util.placement
+import blenderbim.tool as tool
+import blenderbim.core.aggregate
+import blenderbim.core.spatial
+import blenderbim.core.style
 from blenderbim.bim.ifc import IfcStore
+from mathutils import Vector
 
 
 class IfcExporter:
@@ -37,8 +42,10 @@ class IfcExporter:
     def export(self):
         self.file = IfcStore.get_file()
         self.set_header()
+        IfcStore.update_cache()
         if bpy.context.scene.BIMProjectProperties.is_authoring:
-            self.sync_object_placements_and_deletions()
+            self.sync_deletions()
+            self.sync_all_objects()
             self.sync_edited_objects()
         extension = self.ifc_export_settings.output_file.split(".")[-1]
         if extension == "ifczip":
@@ -79,103 +86,99 @@ class IfcExporter:
             self.get_application_name(), self.get_application_version()
         )
 
-    def sync_object_placements_and_deletions(self):
-        self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)
-        to_delete = []
+    def sync_deletions(self):
+        results = []
+        for ifc_definition_id in IfcStore.deleted_ids:
+            try:
+                product = self.file.by_id(ifc_definition_id)
+                if hasattr(product, "GlobalId"):
+                    results.append(product.GlobalId)
+            except:
+                continue
+            ifcopenshell.api.run("root.remove_product", self.file, **{"product": product})
+        return results
 
-        for ifc_definition_id, obj in IfcStore.id_map.items():
+    def sync_all_objects(self):
+        results = []
+        self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)
+        for ifc_definition_id in list(IfcStore.id_map.keys()):
+            obj = IfcStore.id_map[ifc_definition_id]
             try:
                 if isinstance(obj, bpy.types.Material):
                     continue
-                self.sync_object_placement(obj)
-                self.sync_object_container(ifc_definition_id, obj)
+                tool.Collector.sync(obj)
+                result = self.sync_object_placement(obj)
+                if result:
+                    results.append(result)
+                result = self.sync_object_material(obj)
+                if result:
+                    results.append(result)
             except ReferenceError:
                 pass  # The object is likely deleted
-            if self.should_delete(obj):
-                to_delete.append(ifc_definition_id)
-
-        for ifc_definition_id in to_delete:
-            product = self.file.by_id(ifc_definition_id)
-            IfcStore.unlink_element(product)
-            ifcopenshell.api.run("root.remove_product", self.file, **{"product": product})
+        return results
 
     def sync_edited_objects(self):
+        results = []
         for obj in IfcStore.edited_objs.copy():
             if not obj:
                 continue
             try:
                 if isinstance(obj, bpy.types.Material):
-                    bpy.ops.bim.update_style_colours(material=obj.name)
+                    blenderbim.core.style.update_style_colours(tool.Ifc, tool.Style, obj=obj)
                 else:
+                    element = tool.Ifc.get_entity(obj)
+                    if element:
+                        results.append(element)
                     bpy.ops.bim.update_representation(obj=obj.name)
             except ReferenceError:
                 pass  # The object is likely deleted
         IfcStore.edited_objs.clear()
+        return results
+
+    def sync_object_material(self, obj):
+        if not obj.data or not isinstance(obj.data, bpy.types.Mesh):
+            return
+        if not self.has_changed_materials(obj):
+            return
+        bpy.ops.bim.update_representation(obj=obj.name)
+
+    def has_changed_materials(self, obj):
+        checksum = obj.data.BIMMeshProperties.material_checksum
+        return checksum != str([s.id() for s in tool.Geometry.get_styles(obj) if s])
 
     def sync_object_placement(self, obj):
+        if not self.has_object_moved(obj):
+            return
         blender_matrix = np.array(obj.matrix_world)
         element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+        if (obj.scale - Vector((1.0, 1.0, 1.0))).length > 1e-4:
+            bpy.ops.bim.update_representation(obj=obj.name)
+            return element
+        if element.is_a("IfcGridAxis"):
+            return self.sync_grid_axis_object_placement(obj, element)
         if not hasattr(element, "ObjectPlacement"):
             return
-        ifc_matrix = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
-        ifc_matrix[0][3] *= self.unit_scale
-        ifc_matrix[1][3] *= self.unit_scale
-        ifc_matrix[2][3] *= self.unit_scale
+        blenderbim.core.geometry.edit_object_placement(tool.Ifc, tool.Geometry, tool.Surveyor, obj=obj)
+        return element
 
-        props = bpy.context.scene.BIMGeoreferenceProperties
-        if props.has_blender_offset and obj.BIMObjectProperties.blender_offset_type == "OBJECT_PLACEMENT":
-            ifc_matrix = ifcopenshell.util.geolocation.global2local(
-                ifc_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),
-            )
-        if not np.allclose(ifc_matrix, blender_matrix, atol=0.0001):
-            bpy.ops.bim.edit_object_placement(obj=obj.name)
-
-    def sync_object_container(self, guid, obj):
-        element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
-        element_collection = bpy.data.collections.get(obj.name)
-
-        if self.file.schema == "IFC2X3":
-            if element.is_a("IfcProject"):
-                return
-        elif element.is_a("IfcContext"):
-            return
-
-        if (
-            (element.is_a("IfcElement") and element_collection)
-            or element.is_a("IfcSpatialStructureElement")
-            or element.is_a("IfcGrid")
-        ):
-            try:
-                parent_collection = [c for c in bpy.data.collections if c.children.get(element_collection.name)][0]
-            except:
-                return  # Out of the spatial tree
-        else:
-            parent_collection = obj.users_collection[0]
-
-        parent_obj = bpy.data.objects.get(parent_collection.name)
-        if not parent_obj or not parent_obj.BIMObjectProperties.ifc_definition_id:
-            return
-        parent = self.file.by_id(parent_obj.BIMObjectProperties.ifc_definition_id)
-
-        if parent.is_a("IfcSpatialStructureElement") and not element.is_a("IfcSpatialStructureElement"):
-            if parent != ifcopenshell.util.element.get_container(element):
-                bpy.ops.bim.assign_container(relating_structure=parent.id(), related_element=obj.name)
-        elif parent != ifcopenshell.util.element.get_aggregate(element):
-            bpy.ops.bim.assign_object(relating_object=parent_obj.name, related_object=obj.name)
-
-    def should_delete(self, obj):
-        try:
-            # This will throw an exception if the Blender object no longer exists
-            foo = obj.name
-            foo
+    def has_object_moved(self, obj):
+        if not obj.BIMObjectProperties.location_checksum:
+            return True  # Let's be conservative
+        loc_check = np.frombuffer(eval(obj.BIMObjectProperties.location_checksum))
+        rot_check = np.frombuffer(eval(obj.BIMObjectProperties.rotation_checksum))
+        loc_real = np.array(obj.matrix_world.translation).flatten()
+        rot_real = np.array(obj.matrix_world.to_3x3()).flatten()
+        if np.allclose(loc_check, loc_real, atol=1e-4) and np.allclose(rot_check, rot_real, atol=1e-2):
             return False
-        except:
-            return True
+        return True
+
+    def sync_grid_axis_object_placement(self, obj, element):
+        grid = (element.PartOfU or element.PartOfV or element.PartOfW)[0]
+        grid_obj = tool.Ifc.get_object(grid)
+        if grid_obj:
+            self.sync_object_placement(grid_obj)
+            if grid_obj.matrix_world != obj.matrix_world:
+                bpy.ops.bim.update_representation(obj=obj.name)
 
     def get_application_name(self):
         return "BlenderBIM"

src/blenderbim/blenderbim/bim/handler.py

@@ -50,9 +50,7 @@ def mode_callback(obj, data):
         ):
             continue
         if obj.data.BIMMeshProperties.ifc_definition_id:
-            representation = IfcStore.get_file().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
-            if representation.RepresentationType in ["Tessellation", "Brep", "Annotation2D"]:
-                IfcStore.edited_objs.add(obj)
+            IfcStore.edited_objs.add(obj)
         elif IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id).is_a("IfcGridAxis"):
             IfcStore.edited_objs.add(obj)
 
@@ -107,13 +105,6 @@ def color_callback(obj, data):
 
 
 def active_object_callback():
-    obj = bpy.context.active_object
-    for obj in bpy.context.selected_objects:
-        if not obj.BIMObjectProperties.ifc_definition_id:
-            continue
-        stored_obj = IfcStore.get_element(obj.BIMObjectProperties.ifc_definition_id)
-        if stored_obj and stored_obj != obj:
-            bpy.ops.bim.copy_class(obj=obj.name)
     refresh_ui_data()
 
 
@@ -209,6 +200,7 @@ def ensureIfcExported(scene):
 
 
 def get_application(ifc):
+    # 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"):
         if element.ApplicationIdentifier == "BlenderBIM" and element.Version == version:
@@ -216,7 +208,7 @@ def get_application(ifc):
     return ifcopenshell.api.run(
         "owner.add_application",
         ifc,
-        version=get_application_version(),
+        version=version,
         application_full_name="BlenderBIM Add-on",
         application_identifier="BlenderBIM",
     )
@@ -244,6 +236,7 @@ def setDefaultProperties(scene):
     )
     ifcopenshell.api.owner.settings.get_user = lambda ifc: core_owner.get_user(tool.Owner)
     ifcopenshell.api.owner.settings.get_application = get_application
+    # TODO: Move to drawing module
     if len(bpy.context.scene.DocProperties.drawing_styles) == 0:
         drawing_style = bpy.context.scene.DocProperties.drawing_styles.add()
         drawing_style.name = "Technical"
@@ -297,7 +290,7 @@ def setDefaultProperties(scene):
                 RasterStyleProperty.SHADING_SHADOW_INTENSITY.value: 0.5,
                 RasterStyleProperty.DISPLAY_LIGHT_DIRECTION.value: (0.5, 0.5, 0.5),
                 RasterStyleProperty.VIEW_USE_CURVE_MAPPING.value: False,
-                RasterStyleProperty.OVERLAY_SHOW_WIREFRAMES.value: True,
+                RasterStyleProperty.OVERLAY_SHOW_WIREFRAMES.value: False,
                 RasterStyleProperty.OVERLAY_WIREFRAME_THRESHOLD.value: 0,
                 RasterStyleProperty.OVERLAY_SHOW_FLOOR.value: False,
                 RasterStyleProperty.OVERLAY_SHOW_AXIS_X.value: False,

src/blenderbim/blenderbim/bim/helper.py

@@ -46,7 +46,7 @@ def draw_attribute(attribute, layout, copy_operator=None):
         layout.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
     if copy_operator:
         op = layout.operator(f"{copy_operator}", text="", icon="COPYDOWN")
-        op.data = json.dumps({"name": attribute.name, "value": attribute.get_value(), "is_null": attribute.is_null})
+        op.name = attribute.name
 
 
 def import_attributes(ifc_class, props, data, callback=None):
@@ -97,3 +97,37 @@ def export_attributes(props, callback=None):
             continue  # Our job is done
         attributes[prop.name] = prop.get_value()
     return attributes
+
+
+class IFCHeaderSpecs:
+    def __init__(self, filepath: str):
+        # According to https://www.steptools.com/stds/step/IS_final_p21e3.html#clause-8
+        self.description = ""
+        self.implementation_level = ""
+        self.name = ""
+        self.time_stamp = ""
+        self.author = ""
+        self.organization = ""
+        self.preprocessor_version = ""
+        self.originating_system = ""
+        self.authorization = ""
+        self.schema_name = ""
+        with open(filepath) as ifc_file:
+            max_lines_to_parse = 50
+            for _ in range(max_lines_to_parse):
+                line = next(ifc_file)
+                if line.startswith("FILE_DESCRIPTION"):
+                    for i, part in enumerate(line.split("'")):
+                        if i == 1:
+                            self.description = part
+                        elif i == 3:
+                            self.implementation_level = part
+                elif line.startswith("FILE_NAME"):
+                    for i, part in enumerate(line.split("'")):
+                        if i == 1:
+                            self.name = part
+                        elif i == 3:
+                            self.time_stamp = part
+                elif line.startswith("FILE_SCHEMA"):                    
+                    self.schema_name = line.split("'")[1]
+                    break

src/blenderbim/blenderbim/bim/ifc.py

@@ -1,5 +1,5 @@
 # BlenderBIM Add-on - OpenBIM Blender Add-on
-# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+# Copyright (C) 2020, 2021, 2022 Dion Moult <dion@thinkmoult.com>
 #
 # This file is part of BlenderBIM Add-on.
 #
@@ -16,8 +16,10 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+import os
 import bpy
 import uuid
+import hashlib
 import zipfile
 import tempfile
 import ifcopenshell
@@ -29,8 +31,11 @@ class IfcStore:
     path = ""
     file = None
     schema = None
+    cache = None
+    cache_path = None
     id_map = {}
     guid_map = {}
+    deleted_ids = set()
     edited_objs = set()
     pset_template_path = ""
     pset_template_file = None
@@ -42,24 +47,31 @@ class IfcStore:
     last_transaction = ""
     history = []
     future = []
+    schema_identifiers = ["IFC4", "IFC2X3"]
 
     @staticmethod
     def purge():
         IfcStore.path = ""
         IfcStore.file = None
         IfcStore.schema = None
+        IfcStore.cache = None
+        IfcStore.cache_path = None
         IfcStore.id_map = {}
         IfcStore.guid_map = {}
+        IfcStore.deleted_ids = set()
         IfcStore.edited_objs = set()
         IfcStore.pset_template_path = ""
         IfcStore.pset_template_file = None
         IfcStore.library_path = ""
         IfcStore.library_file = None
+        IfcStore.schema_identifiers = ["IFC4", "IFC2X3"]
 
     @staticmethod
     def get_file():
         if IfcStore.file is None:
             IfcStore.path = bpy.context.scene.BIMProperties.ifc_file
+            if not os.path.isabs(IfcStore.path):
+                IfcStore.path = os.path.abspath(os.path.join(bpy.path.abspath("//"), IfcStore.path))
             if IfcStore.path:
                 try:
                     IfcStore.load_file(IfcStore.path)
@@ -67,6 +79,30 @@ class IfcStore:
                     pass
         return IfcStore.file
 
+    @staticmethod
+    def get_cache():
+        if IfcStore.cache is None and IfcStore.path:
+            ifc_key = IfcStore.path + IfcStore.file.wrapped_data.header.file_name.time_stamp
+            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()
+            try:
+                IfcStore.cache = ifcopenshell.geom.serializers.hdf5(IfcStore.cache_path, cache_settings)
+            except:
+                return
+        return IfcStore.cache
+
+    @staticmethod
+    def update_cache():
+        if not IfcStore.cache:
+            return
+        ifc_key = IfcStore.path + IfcStore.file.wrapped_data.header.file_name.time_stamp
+        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)
+        IfcStore.get_cache()
+
     @staticmethod
     def load_file(path):
         extension = path.split(".")[-1]
@@ -85,7 +121,9 @@ class IfcStore:
     @staticmethod
     def get_schema():
         if IfcStore.file is None:
-            return
+            IfcStore.schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(
+                bpy.context.scene.BIMProjectProperties.export_schema
+            )
         elif IfcStore.schema is None:
             IfcStore.schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(IfcStore.file.schema)
         return IfcStore.schema
@@ -224,7 +262,9 @@ class IfcStore:
         except:
             pass
 
-        if obj:
+        if element and element.is_a("IfcSurfaceStyle"):
+            obj.BIMMaterialProperties.ifc_style_id = 0
+        elif obj:
             obj.BIMObjectProperties.ifc_definition_id = 0
 
     @staticmethod
@@ -232,7 +272,6 @@ class IfcStore:
         is_top_level_operator = not bool(IfcStore.current_transaction)
 
         if is_top_level_operator:
-            active_object = context.active_object
             IfcStore.begin_transaction(operator)
             IfcStore.get_file().begin_transaction()
             # This empty transaction ensures that each operator has at least one transaction
@@ -248,11 +287,7 @@ class IfcStore:
                 operator, rollback=lambda d: IfcStore.get_file().undo(), commit=lambda d: IfcStore.get_file().redo()
             )
             IfcStore.end_transaction(operator)
-            try:
-                active_object.name
-                context.view_layer.objects.active = active_object
-            except:
-                pass
+            blenderbim.bim.handler.refresh_ui_data()
 
         return result
 

src/blenderbim/blenderbim/bim/import_ifc.py

@@ -31,6 +31,7 @@ import ifcopenshell.util.unit
 import ifcopenshell.util.element
 import ifcopenshell.util.selector
 import ifcopenshell.util.geolocation
+import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.drawing.prop import get_diagram_scales
 
@@ -67,6 +68,7 @@ class MaterialCreator:
         self.add_default_material(element)
         if self.parse_representations(element):
             self.assign_material_slots_to_faces()
+        tool.Geometry.record_object_materials(obj)
 
     def add_default_material(self, element):
         element_material = ifcopenshell.util.element.get_material(element)
@@ -207,6 +209,8 @@ class IfcImporter:
         self.profile_code("Create project")
         self.process_element_filter()
         self.profile_code("Process element filter")
+        self.process_context_filter()
+        self.profile_code("Process context filter")
         self.create_collections()
         self.profile_code("Create collections")
         self.create_openings_collection()
@@ -215,7 +219,7 @@ class IfcImporter:
         self.profile_code("Create materials")
         self.create_styles()
         self.profile_code("Create styles")
-        self.create_annotation()
+        self.create_annotations()
         self.profile_code("Create annotation")
         self.parse_native_elements()
         self.profile_code("Parsing native elements")
@@ -252,9 +256,11 @@ class IfcImporter:
         self.update_progress(100)
         bpy.context.window_manager.progress_end()
 
-    def is_element_far_away(self, element, is_meters=True):
+    def is_element_far_away(self, element):
         try:
-            return self.is_point_far_away(element.ObjectPlacement.RelativePlacement.Location, is_meters=is_meters)
+            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
 
@@ -266,12 +272,38 @@ class IfcImporter:
             coords = point.Coordinates
         return abs(coords[0]) > limit or abs(coords[1]) > limit or abs(coords[2]) > limit
 
+    def process_context_filter(self):
+        # Facetation is to accommodate broken Revit files
+        # See https://forums.buildingsmart.org/t/suggestions-on-how-to-improve-clarity-of-representation-context-usage-in-documentation/3663/6?u=moult
+        self.body_contexts = [
+            c.id()
+            for c in self.file.by_type("IfcGeometricRepresentationSubContext")
+            if c.ContextIdentifier in ["Body", "Facetation"]
+        ]
+        if self.body_contexts:
+            self.settings.set_context_ids(self.body_contexts)
+        # Annotation is to accommodate broken Revit files
+        # See https://github.com/Autodesk/revit-ifc/issues/187
+        self.plan_contexts = [
+            c.id()
+            for c in self.file.by_type("IfcGeometricRepresentationContext")
+            if c.ContextType in ["Plan", "Annotation"]
+        ]
+        if self.plan_contexts:
+            self.settings_2d.set_context_ids(self.plan_contexts)
+
     def process_element_filter(self):
         if self.ifc_import_settings.has_filter:
             self.elements = set(self.ifc_import_settings.elements)
-            self.spatial_elements = self.get_spatial_elements_filtered_by_elements(self.elements)
+            # TODO: enable filtering for annotations
+            self.annotations = set(self.file.by_type("IfcAnnotation"))
         else:
             self.elements = set(self.file.by_type("IfcElement"))
+            self.annotations = set(self.file.by_type("IfcAnnotation"))
+
+        if self.ifc_import_settings.has_filter and self.ifc_import_settings.should_filter_spatial_elements:
+            self.spatial_elements = self.get_spatial_elements_filtered_by_elements(self.elements)
+        else:
             if self.file.schema == "IFC2X3":
                 self.spatial_elements = set(self.file.by_type("IfcSpatialStructureElement"))
             else:
@@ -352,24 +384,26 @@ class IfcImporter:
         else:
             project = self.file.by_type("IfcContext")[0]
         site = self.find_decomposed_ifc_class(project, "IfcSite")
-        if site and self.is_element_far_away(site[0], is_meters=False):
-            return self.guess_georeferencing(site[0])
+        if site and self.is_element_far_away(site):
+            return self.guess_georeferencing(site)
         building = self.find_decomposed_ifc_class(project, "IfcBuilding")
-        if building and self.is_element_far_away(building[0], is_meters=False):
-            return self.guess_georeferencing(building[0])
+        if building and self.is_element_far_away(building):
+            return self.guess_georeferencing(building)
         return self.guess_absolute_coordinate()
 
     def guess_georeferencing(self, element):
-        if not element.ObjectPlacement.is_a("IfcLocalPlacement"):
+        if not element.ObjectPlacement or not element.ObjectPlacement.is_a("IfcLocalPlacement"):
             return
-        placement = element.ObjectPlacement.RelativePlacement
+        placement = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
         props = bpy.context.scene.BIMGeoreferenceProperties
-        props.blender_eastings = str(placement.Location.Coordinates[0])
-        props.blender_northings = str(placement.Location.Coordinates[1])
-        props.blender_orthogonal_height = str(placement.Location.Coordinates[2])
-        if placement.RefDirection:
-            props.blender_x_axis_abscissa = str(placement.RefDirection.DirectionRatios[0])
-            props.blender_x_axis_ordinate = str(placement.RefDirection.DirectionRatios[1])
+        props.blender_eastings = str(placement[0][3])
+        props.blender_northings = str(placement[1][3])
+        props.blender_orthogonal_height = str(placement[2][3])
+        x_axis = mathutils.Vector(placement[:, 0][0:3])
+        default_x_axis = mathutils.Vector((1, 0, 0))
+        if (default_x_axis - x_axis).length > 0.01:
+            props.blender_x_axis_abscissa = str(placement[0][0])
+            props.blender_x_axis_ordinate = str(placement[1][0])
         props.has_blender_offset = True
 
     def guess_absolute_coordinate(self):
@@ -476,8 +510,8 @@ class IfcImporter:
             shape = ifcopenshell.geom.create_shape(self.settings_2d, axis.AxisCurve)
             mesh = self.create_mesh(axis, shape)
             obj = bpy.data.objects.new(f"IfcGridAxis/{axis.AxisTag}", mesh)
-            obj.BIMObjectProperties.ifc_definition_id = axis.id()
-            obj.matrix_world = grid_obj.matrix_world
+            self.link_element(axis, obj)
+            self.set_matrix_world(obj, grid_obj.matrix_world)
             grid_collection.objects.link(obj)
 
     def create_type_products(self):
@@ -504,6 +538,7 @@ class IfcImporter:
                 try:
                     shape = ifcopenshell.geom.create_shape(self.settings, representation_map.MappedRepresentation)
                     mesh = self.create_mesh(element, shape)
+                    self.link_mesh(shape, mesh)
                     self.meshes[mesh_name] = mesh
                 except:
                     self.ifc_import_settings.logger.error("Failed to generate shape for %s", element)
@@ -560,19 +595,26 @@ class IfcImporter:
         print("Done creating geometry")
 
     def create_spatial_elements(self):
-        products = self.create_products(self.spatial_elements)
-        self.spatial_elements -= products
-        products = self.create_curve_products(self.spatial_elements)
-        self.spatial_elements -= products
-        for element in self.spatial_elements:
-            self.create_product(element)
+        self.create_generic_elements(self.spatial_elements)
+
+    def create_annotations(self):
+        self.create_generic_elements(self.annotations)
 
     def create_elements(self):
-        products = self.create_products(self.elements)
-        self.elements -= products
-        products = self.create_curve_products(self.elements)
-        self.elements -= products
-        for element in self.elements:
+        self.create_generic_elements(self.elements)
+
+    def create_generic_elements(self, elements):
+        # Based on my experience in viewing BIM models, representations are prioritised as follows:
+        # 1. 3D Body, 2. 2D Plans, 3. Point clouds, 4. No representation
+        # If an element has a representation that doesn't follow 1, 2, or 3, it will not show by default.
+        # The user can load them later if they want to view them.
+        products = self.create_products(elements)
+        elements -= products
+        products = self.create_curve_products(elements)
+        elements -= products
+        products = self.create_pointclouds(elements)
+        elements -= products
+        for element in elements:
             self.create_product(element)
 
     def create_products(self, products):
@@ -585,6 +627,9 @@ class IfcImporter:
             )
         else:
             iterator = ifcopenshell.geom.iterator(self.settings, self.file, include=products)
+        cache = IfcStore.get_cache()
+        if cache:
+            iterator.set_cache(cache)
         valid_file = iterator.initialize()
         if not valid_file:
             return results
@@ -601,26 +646,25 @@ class IfcImporter:
                     )
                 )
                 checkpoint = time.time()
-                # self.update_progress(((total / approx_total_products) * progress_range) + start_progress)
+                self.update_progress((iterator.progress() / 100 * progress_range) + start_progress)
             shape = iterator.get()
             if shape:
                 product = self.file.by_id(shape.guid)
-                # Facetation is to accommodate broken Revit files
-                # See https://forums.buildingsmart.org/t/suggestions-on-how-to-improve-clarity-of-representation-context-usage-in-documentation/3663/6?u=moult
-                if shape.context not in ["Body", "Facetation"] and IfcStore.get_element(shape.guid):
-                    # We only load a single context, and we prioritise the Body context. See #1290.
-                    pass
-                else:
+                if self.body_contexts:
                     self.create_product(product, shape)
                     results.add(product)
+                else:
+                    if shape.context not in ["Body", "Facetation"] and IfcStore.get_element(shape.guid):
+                        # We only load a single context, and we prioritise the Body context. See #1290.
+                        pass
+                    else:
+                        self.create_product(product, shape)
+                        results.add(product)
             if not iterator.next():
                 break
         print("Done creating geometry")
         return results
 
-    def create_annotation(self):
-        self.create_curve_products(self.file.by_type("IfcAnnotation"))
-
     def create_structural_items(self):
         # Create structural collections
         self.structural_member_collection = bpy.data.collections.new("Members")
@@ -658,9 +702,69 @@ class IfcImporter:
             mesh.from_pydata([mathutils.Vector(vertex) * self.unit_scale], [], [])
 
             obj = bpy.data.objects.new("{}/{}".format(product.is_a(), product.Name), mesh)
-            obj.matrix_world = self.apply_blender_offset_to_matrix_world(obj, placement_matrix)
+            self.set_matrix_world(obj, self.apply_blender_offset_to_matrix_world(obj, placement_matrix))
             self.link_element(product, obj)
 
+    def get_pointcloud_representation(self, product):
+        if hasattr(product, "Representation") and hasattr(product.Representation, "Representations"):
+            representations = product.Representation.Representations
+        elif hasattr(product, "RepresentationMaps") and hasattr(product.RepresentationMaps, "RepresentationMaps"):
+            representations = product.RepresentationMaps
+        else:
+            return None
+
+        for representation in representations:
+            if representation.RepresentationType == "PointCloud":
+                return representation
+
+            elif self.file.schema == "IFC2X3" and representation.RepresentationType == "GeometricSet":
+                for item in representation.Items:
+                    if not (item.is_a("IfcCartesianPointList") or item.is_a("IfcCartesianPoint")):
+                        break
+                else:
+                    return representation
+
+            elif representation.RepresentationType == "MappedRepresentation":
+                for item in representation.Items:
+                    mapped_representation = self.get_pointcloud_representation(item)
+                    if mapped_representation is not None:
+                        return mapped_representation
+        return None
+
+    def create_pointclouds(self, products):
+        result = set()
+        for product in products:
+            representation = self.get_pointcloud_representation(product)
+            if representation is not None:
+                pointcloud = self.create_pointcloud(product, representation)
+                if pointcloud is not None:
+                    result.add(pointcloud)
+
+        return result
+
+    def create_pointcloud(self, product, representation):
+        placement_matrix = ifcopenshell.util.placement.get_local_placement(product.ObjectPlacement)
+        vertex_list = []
+        for item in representation.Items:
+            if item.is_a("IfcCartesianPointList"):
+                vertex_list.extend(
+                    mathutils.Vector(list(coordinates)) * self.unit_scale for coordinates in item.CoordList
+                )
+            elif item.is_a("IfcCartesianPoint"):
+                vertex_list.append(mathutils.Vector(list(item.Coordinates)) * self.unit_scale)
+
+        if len(vertex_list) == 0:
+            return None
+
+        mesh_name = f"{representation.ContextOfItems.id()}/{representation.id()}"
+        mesh = bpy.data.meshes.new(mesh_name)
+        mesh.from_pydata(vertex_list, [], [])
+
+        obj = bpy.data.objects.new("{}/{}".format(product.is_a(), product.Name), mesh)
+        self.set_matrix_world(obj, self.apply_blender_offset_to_matrix_world(obj, placement_matrix))
+        self.link_element(product, obj)
+        return product
+
     def create_curve_products(self, products):
         results = set()
         if not products:
@@ -671,6 +775,9 @@ class IfcImporter:
             )
         else:
             iterator = ifcopenshell.geom.iterator(self.settings_2d, self.file, include=products)
+        cache = IfcStore.get_cache()
+        if cache:
+            iterator.set_cache(cache)
         valid_file = iterator.initialize()
         if not valid_file:
             return results
@@ -701,15 +808,16 @@ class IfcImporter:
             pass
         elif element.is_a("IfcAnnotation") and element.ObjectType == "DRAWING":
             mesh = self.create_camera(element, shape)
+            self.link_mesh(shape, mesh)
+        elif element.is_a("IfcAnnotation") and self.is_curve_annotation(element):
+            mesh = self.create_curve(element, shape)
+            self.link_mesh(shape, mesh)
         elif shape:
             mesh_name = self.get_mesh_name(shape.geometry)
             mesh = self.meshes.get(mesh_name)
             if mesh is None:
                 mesh = self.create_mesh(element, shape)
-                if "-" in shape.geometry.id:
-                    mesh.BIMMeshProperties.ifc_definition_id = int(shape.geometry.id.split("-")[0])
-                else:
-                    mesh.BIMMeshProperties.ifc_definition_id = int(shape.geometry.id)
+                self.link_mesh(shape, mesh)
                 self.meshes[mesh_name] = mesh
         else:
             mesh = None
@@ -723,13 +831,13 @@ class IfcImporter:
             mat = np.array(
                 ([m[0], m[3], m[6], m[9]], [m[1], m[4], m[7], m[10]], [m[2], m[5], m[8], m[11]], [0, 0, 0, 1])
             )
-            obj.matrix_world = self.apply_blender_offset_to_matrix_world(obj, mat)
+            self.set_matrix_world(obj, self.apply_blender_offset_to_matrix_world(obj, mat))
             self.material_creator.create(element, obj, mesh)
         elif mesh:
-            obj.matrix_world = self.apply_blender_offset_to_matrix_world(obj, self.get_element_matrix(element))
+            self.set_matrix_world(obj, self.apply_blender_offset_to_matrix_world(obj, self.get_element_matrix(element)))
             self.material_creator.create(element, obj, mesh)
         elif hasattr(element, "ObjectPlacement"):
-            obj.matrix_world = self.apply_blender_offset_to_matrix_world(obj, self.get_element_matrix(element))
+            self.set_matrix_world(obj, self.apply_blender_offset_to_matrix_world(obj, self.get_element_matrix(element)))
 
         self.add_opening_relation(element, obj)
 
@@ -845,6 +953,34 @@ class IfcImporter:
         curve.bevel_depth = self.unit_scale * item.Radius
         return curve
 
+    def create_native_annotation(self, element, mesh_name):
+        # TODO: georeferencing?
+        curve = bpy.data.curves.new(mesh_name, type="CURVE")
+        curve.dimensions = "3D"
+        curve.resolution_u = 2
+        polyline = curve.splines.new("POLY")
+
+        for representation in self.native_data[element.GlobalId]["representations"]:
+            for item in representation["raw"].Items:
+                # TODO: support inner radius, start param, and end param
+                geometry = ifcopenshell.geom.create_shape(self.settings_native, item.Directrix)
+                e = geometry.edges
+                v = geometry.verts
+                vertices = [[v[i], v[i + 1], v[i + 2], 1] for i in range(0, len(v), 3)]
+                edges = [[e[i], e[i + 1]] for i in range(0, len(e), 2)]
+                v2 = None
+                for edge in edges:
+                    v1 = vertices[edge[0]]
+                    if v1 != v2:
+                        polyline = curve.splines.new("POLY")
+                        polyline.points[-1].co = representation["matrix"] @ mathutils.Vector(v1)
+                    v2 = vertices[edge[1]]
+                    polyline.points.add(1)
+                    polyline.points[-1].co = representation["matrix"] @ mathutils.Vector(v2)
+
+        curve.bevel_depth = self.unit_scale * item.Radius
+        return curve
+
     def merge_by_class(self):
         merge_set = {}
         for obj in self.added_data.values():
@@ -993,6 +1129,7 @@ class IfcImporter:
     def create_spatial_decomposition_collections(self):
         for rel_aggregate in self.project["ifc"].IsDecomposedBy or []:
             self.create_spatial_decomposition_collection(self.project["blender"], rel_aggregate.RelatedObjects)
+        self.create_views_collection()
         self.create_type_collection()
 
     def create_type_collection(self):
@@ -1004,6 +1141,22 @@ class IfcImporter:
             self.type_collection = bpy.data.collections.new("Types")
             self.project["blender"].children.link(self.type_collection)
 
+    def create_views_collection(self):
+        view_collection = None
+        for collection in self.project["blender"].children:
+            if collection.name == "Views":
+                view_collection = collection
+                break
+        if not view_collection:
+            view_collection = bpy.data.collections.new("Views")
+            self.project["blender"].children.link(view_collection)
+        for element in self.file.by_type("IfcAnnotation"):
+            if element.ObjectType == "DRAWING":
+                group = [r for r in element.HasAssignments if r.is_a("IfcRelAssignsToGroup")][0].RelatingGroup
+                collection = bpy.data.collections.new("IfcGroup/" + group.Name)
+                self.collections[group.GlobalId] = collection
+                view_collection.children.link(collection)
+
     def create_spatial_decomposition_collection(self, parent, related_objects):
         for element in related_objects:
             if element not in self.spatial_elements:
@@ -1019,6 +1172,8 @@ class IfcImporter:
     def create_aggregate_collections(self):
         if self.ifc_import_settings.has_filter:
             rel_aggregates = [e.IsDecomposedBy[0] for e in self.elements if e.IsDecomposedBy]
+            rel_aggregates += [e.Decomposes[0] for e in self.elements if e.Decomposes]
+            rel_aggregates = set(rel_aggregates)
         else:
             rel_aggregates = [a for a in self.file.by_type("IfcRelAggregates") if a.RelatingObject.is_a("IfcElement")]
 
@@ -1117,8 +1272,12 @@ class IfcImporter:
     def place_object_in_decomposition_collection(self, element, obj):
         if element.is_a("IfcProject"):
             return
+        elif element.is_a("IfcGridAxis"):
+            return
         elif element.GlobalId in self.collections:
-            return self.collections[element.GlobalId].objects.link(obj)
+            collection = self.collections[element.GlobalId]
+            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)
@@ -1128,6 +1287,8 @@ class IfcImporter:
     def place_object_in_spatial_decomposition_collection(self, element, obj):
         if element.is_a("IfcProject"):
             return
+        elif element.is_a("IfcGridAxis"):
+            return
         elif element.GlobalId in self.collections:
             return self.collections[element.GlobalId].objects.link(obj)
         elif element.is_a("IfcTypeObject"):
@@ -1138,16 +1299,9 @@ class IfcImporter:
             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") and element.ObjectType == "DRAWING":
-            view_collection = bpy.data.collections.get("Views")
-            if not view_collection:
-                view_collection = bpy.data.collections.new("Views")
-                bpy.context.scene.collection.children.link(view_collection)
+        elif element.is_a("IfcAnnotation") and self.is_drawing_annotation(element):
             group = [r for r in element.HasAssignments if r.is_a("IfcRelAssignsToGroup")][0].RelatingGroup
-            drawing_collection = bpy.data.collections.new("IfcGroup/" + group.Name)
-            view_collection.children.link(drawing_collection)
-            drawing_collection.objects.link(obj)
-            return
+            return self.collections[group.GlobalId].objects.link(obj)
 
         container = ifcopenshell.util.element.get_container(element)
         if container:
@@ -1163,6 +1317,33 @@ class IfcImporter:
             self.ifc_import_settings.logger.warning("Warning: this object is outside the spatial hierarchy %s", element)
             bpy.context.scene.collection.objects.link(obj)
 
+    def is_curve_annotation(self, element):
+        return element.ObjectType in [
+            "DIMENSION",
+            "EQUAL_DIMENSION",
+            "MISC",
+            "PLAN_LEVEL",
+            "SECTION_LEVEL",
+            "STAIR_ARROW",
+            "TEXT_LEADER",
+        ]
+
+    def is_drawing_annotation(self, element):
+        return element.ObjectType in [
+            "BREAKLINE",
+            "DIMENSION",
+            "DRAWING",
+            "EQUAL_DIMENSION",
+            "GRID",
+            "HIDDEN_LINE",
+            "MISC",
+            "PLAN_LEVEL",
+            "SECTION_LEVEL",
+            "STAIR_ARROW",
+            "TEXT",
+            "TEXT_LEADER",
+        ]
+
     def get_element_matrix(self, element):
         result = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
         result[0][3] *= self.unit_scale
@@ -1289,6 +1470,31 @@ class IfcImporter:
                     camera.BIMCameraProperties.custom_diagram_scale = pset["Scale"]
         return camera
 
+    def create_curve(self, element, shape):
+        if hasattr(shape, "geometry"):
+            geometry = shape.geometry
+        else:
+            geometry = shape
+
+        curve = bpy.data.curves.new(self.get_mesh_name(geometry), type="CURVE")
+        curve.dimensions = "3D"
+        curve.resolution_u = 2
+
+        e = geometry.edges
+        v = geometry.verts
+        vertices = [[v[i], v[i + 1], v[i + 2], 1] for i in range(0, len(v), 3)]
+        edges = [[e[i], e[i + 1]] for i in range(0, len(e), 2)]
+        v2 = None
+        for edge in edges:
+            v1 = vertices[edge[0]]
+            if v1 != v2:
+                polyline = curve.splines.new("POLY")
+                polyline.points[-1].co = mathutils.Vector(v1)
+            v2 = vertices[edge[1]]
+            polyline.points.add(1)
+            polyline.points[-1].co = mathutils.Vector(v2)
+        return curve
+
     def create_mesh(self, element, shape):
         try:
             if hasattr(shape, "geometry"):
@@ -1397,6 +1603,20 @@ class IfcImporter:
         self.added_data[element.id()] = obj
         IfcStore.link_element(element, obj)
 
+    def link_mesh(self, shape, mesh):
+        if hasattr(shape, "geometry"):
+            geometry = shape.geometry
+        else:
+            geometry = shape
+        if "-" in geometry.id:
+            mesh.BIMMeshProperties.ifc_definition_id = int(geometry.id.split("-")[0])
+        else:
+            mesh.BIMMeshProperties.ifc_definition_id = int(geometry.id)
+
+    def set_matrix_world(self, obj, matrix_world):
+        obj.matrix_world = matrix_world
+        tool.Geometry.record_object_position(obj)
+
 
 class IfcImportSettings:
     def __init__(self):
@@ -1413,14 +1633,30 @@ class IfcImportSettings:
         self.should_offset_model = False
         self.model_offset_coordinates = (0, 0, 0)
         self.has_filter = None
-        self.elements = ""
+        self.should_filter_spatial_elements = True
+        self.elements = set()
         self.collection_mode = "DECOMPOSITION"
 
     @staticmethod
     def factory(context, input_file, logger):
         scene_diff = context.scene.DiffProperties
+        props = context.scene.BIMProjectProperties
         settings = IfcImportSettings()
         settings.input_file = input_file
         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.should_merge_by_class = props.should_merge_by_class
+        settings.should_merge_by_material = props.should_merge_by_material
+        settings.should_merge_materials_by_colour = props.should_merge_materials_by_colour
+        settings.should_clean_mesh = props.should_clean_mesh
+        settings.deflection_tolerance = props.deflection_tolerance
+        settings.angular_tolerance = props.angular_tolerance
+        settings.should_offset_model = props.should_offset_model
+        settings.model_offset_coordinates = (
+            [float(o) for o in props.model_offset_coordinates.split(",")]
+            if props.model_offset_coordinates
+            else (0, 0, 0)
+        )
         return settings

src/blenderbim/blenderbim/bim/module/aggregate/operator.py

@@ -17,8 +17,11 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
+import ifcopenshell
+import ifcopenshell.util.element
 import blenderbim.tool as tool
 import blenderbim.core.aggregate as core
+import blenderbim.core.spatial
 import blenderbim.bim.handler
 from blenderbim.bim.ifc import IfcStore
 
@@ -92,10 +95,34 @@ class AddAggregate(bpy.types.Operator):
 
     def _execute(self, context):
         obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
+        element = tool.Ifc.get_entity(obj)
+        if not element:
+            return {"FINISHED"}
+
         aggregate_collection = bpy.data.collections.new("IfcElementAssembly/Assembly")
         context.scene.collection.children.link(aggregate_collection)
         aggregate = bpy.data.objects.new("Assembly", None)
         aggregate_collection.objects.link(aggregate)
         bpy.ops.bim.assign_class(obj=aggregate.name, ifc_class="IfcElementAssembly")
-        bpy.ops.bim.assign_object(related_object=obj.name, relating_object=aggregate.name)
+
+        tool.Collector.sync(obj)
+        current_aggregate = ifcopenshell.util.element.get_aggregate(element)
+        current_container = ifcopenshell.util.element.get_container(element)
+        if current_aggregate:
+            core.assign_object(
+                tool.Ifc,
+                tool.Aggregate,
+                tool.Collector,
+                relating_obj=tool.Ifc.get_object(current_aggregate),
+                related_obj=aggregate,
+            )
+        elif current_container:
+            blenderbim.core.spatial.assign_container(
+                tool.Ifc,
+                tool.Collector,
+                tool.Spatial,
+                structure_obj=tool.Ifc.get_object(current_container),
+                element_obj=aggregate,
+            )
+        core.assign_object(tool.Ifc, tool.Aggregate, tool.Collector, relating_obj=aggregate, related_obj=obj)
         return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/aggregate/ui.py

@@ -28,6 +28,7 @@ class BIM_PT_aggregate(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_object_attributes_properties_and_relationships"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/attribute/__init__.py

@@ -24,6 +24,7 @@ classes = (
     operator.DisableEditingAttributes,
     operator.EditAttributes,
     operator.GenerateGlobalId,
+    operator.CopyAttributeToSelection,
     prop.BIMAttributeProperties,
     ui.BIM_PT_object_attributes,
     ui.BIM_PT_material_attributes,

src/blenderbim/blenderbim/bim/module/attribute/data.py

@@ -0,0 +1,74 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import ifcopenshell
+import blenderbim.tool as tool
+
+
+def refresh():
+    AttributesData.is_loaded = False
+    MaterialAttributesData.is_loaded = False
+
+
+class AttributesData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.data = {"attributes": cls.attributes()}
+        cls.is_loaded = True
+
+    @classmethod
+    def attributes(cls):
+        results = []
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        data = element.get_info()
+        if hasattr(element, "GlobalId"):
+            excluded_keys = ["id", "type"]
+        else:
+            excluded_keys = ["type"]
+        for key, value in data.items():
+            if value is None or isinstance(value, ifcopenshell.entity_instance) or key in excluded_keys:
+                continue
+            if key == "id":
+                key = "STEP ID"
+            results.append({"name": key, "value": str(value)})
+        return results
+
+
+class MaterialAttributesData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.data = {"attributes": cls.attributes()}
+        cls.is_loaded = True
+
+    @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

src/blenderbim/blenderbim/bim/module/attribute/operator.py

@@ -20,10 +20,21 @@ import bpy
 import json
 import ifcopenshell
 import ifcopenshell.api
+import blenderbim.bim.helper
+import blenderbim.bim.handler
+import blenderbim.tool as tool
+import blenderbim.core.attribute as core
 from blenderbim.bim.ifc import IfcStore
 from ifcopenshell.api.attribute.data import Data
 
 
+class Operator:
+    def execute(self, context):
+        IfcStore.execute_ifc_operator(self, context)
+        blenderbim.bim.handler.refresh_ui_data()
+        return {"FINISHED"}
+
+
 class EnableEditingAttributes(bpy.types.Operator):
     bl_idname = "bim.enable_editing_attributes"
     bl_label = "Enable Editing Attributes"
@@ -40,22 +51,9 @@ class EnableEditingAttributes(bpy.types.Operator):
         oprops = obj.BIMObjectProperties
         props = obj.BIMAttributeProperties
         props.attributes.clear()
-        for attribute in Data.products[oprops.ifc_definition_id]:
-            new = props.attributes.add()
-            if attribute["type"] == "entity" or (attribute["type"] == "list" and attribute["list_type"] == "entity"):
-                continue
-            new.name = attribute["name"]
-            new.is_null = attribute["is_null"]
-            if attribute["type"] == "string" or attribute["type"] == "list":
-                new.string_value = attribute["value"] or ""
-            elif attribute["type"] == "integer":
-                new.int_value = attribute["value"] or 0
-            elif attribute["type"] == "float":
-                new.float_value = attribute["value"] or 0.0
-            elif attribute["type"] == "enum":
-                new.enum_items = json.dumps(attribute["enum_items"])
-                if attribute["value"]:
-                    new.enum_value = attribute["value"]
+        if oprops.ifc_definition_id not in Data.products:
+            Data.load(IfcStore.get_file(), oprops.ifc_definition_id)
+        blenderbim.bim.helper.import_attributes2(tool.Ifc.get().by_id(oprops.ifc_definition_id), props.attributes)
         props.is_editing_attributes = True
         return {"FINISHED"}
 
@@ -77,16 +75,13 @@ class DisableEditingAttributes(bpy.types.Operator):
         return {"FINISHED"}
 
 
-class EditAttributes(bpy.types.Operator):
+class EditAttributes(bpy.types.Operator, Operator):
     bl_idname = "bim.edit_attributes"
     bl_label = "Edit Attributes"
     bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
     obj_type: bpy.props.StringProperty()
 
-    def execute(self, context):
-        return IfcStore.execute_ifc_operator(self, context)
-
     def _execute(self, context):
         self.file = IfcStore.get_file()
         if self.obj_type == "Object":
@@ -139,3 +134,14 @@ class GenerateGlobalId(bpy.types.Operator):
         global_id.data_type = "string"
         global_id.string_value = ifcopenshell.guid.new()
         return {"FINISHED"}
+
+
+class CopyAttributeToSelection(bpy.types.Operator, Operator):
+    bl_idname = "bim.copy_attribute_to_selection"
+    bl_label = "Copy Attribute To Selection"
+    name: bpy.props.StringProperty()
+
+    def _execute(self, context):
+        value = context.active_object.BIMAttributeProperties.attributes.get(self.name).get_value()
+        for obj in context.selected_objects:
+            core.copy_attribute_to_selection(tool.Ifc, name=self.name, value=value, obj=obj)

src/blenderbim/blenderbim/bim/module/attribute/ui.py

@@ -16,17 +16,16 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+import blenderbim.bim.helper
 from bpy.types import Panel
 from blenderbim.bim.ifc import IfcStore
-from ifcopenshell.api.attribute.data import Data
+from blenderbim.bim.module.attribute.data import AttributesData, MaterialAttributesData
 
 
-def draw_ui(context, layout, obj_type):
+def draw_ui(context, layout, obj_type, attributes):
     obj = context.active_object if obj_type == "Object" else context.active_object.active_material
     oprops = obj.BIMObjectProperties
     props = obj.BIMAttributeProperties
-    if oprops.ifc_definition_id not in Data.products:
-        Data.load(IfcStore.get_file(), oprops.ifc_definition_id)
 
     if props.is_editing_attributes:
         row = layout.row(align=True)
@@ -37,46 +36,17 @@ def draw_ui(context, layout, obj_type):
         op.obj_type = obj_type
         op.obj = obj.name
 
-        for attribute in Data.products[oprops.ifc_definition_id]:
-            if attribute["type"] == "entity":
-                continue
-            row = layout.row(align=True)
-            blender_attribute = props.attributes.get(attribute["name"])
-            if attribute["type"] == "string" or attribute["type"] == "list":
-                row.prop(blender_attribute, "string_value", text=attribute["name"])
-            elif attribute["type"] == "integer":
-                row.prop(blender_attribute, "int_value", text=attribute["name"])
-            elif attribute["type"] == "float":
-                row.prop(blender_attribute, "float_value", text=attribute["name"])
-            elif attribute["type"] == "enum":
-                row.prop(blender_attribute, "enum_value", text=attribute["name"])
-
-            if attribute["name"] == "GlobalId":
-                row.operator("bim.generate_global_id", icon="FILE_REFRESH", text="")
-            if attribute["is_optional"]:
-                row.prop(
-                    blender_attribute,
-                    "is_null",
-                    icon="RADIOBUT_OFF" if blender_attribute.is_null else "RADIOBUT_ON",
-                    text="",
-                )
+        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
 
-        if "GlobalId" not in [a["name"] for a in Data.products[oprops.ifc_definition_id]]:
-            row = layout.row(align=True)
-            row.label(text="STEP ID")
-            row.label(text=str(oprops.ifc_definition_id))
-
-        for attribute in Data.products[oprops.ifc_definition_id]:
-            if attribute["value"] is None or attribute["type"] == "entity":
-                continue
+        for attribute in attributes:
             row = layout.row(align=True)
             row.label(text=attribute["name"])
-            row.label(text=str(attribute["value"]))
+            row.label(text=attribute["value"])
 
     # TODO: reimplement, see #1222
     # if "IfcSite/" in context.active_object.name or "IfcBuilding/" in context.active_object.name:
@@ -89,6 +59,8 @@ class BIM_PT_object_attributes(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_object_attributes_properties_and_relationships"
+    bl_options = {"DEFAULT_CLOSED"}
 
     @classmethod
     def poll(cls, context):
@@ -99,7 +71,9 @@ class BIM_PT_object_attributes(Panel):
         return bool(context.active_object.BIMObjectProperties.ifc_definition_id)
 
     def draw(self, context):
-        draw_ui(context, self.layout, "Object")
+        if not AttributesData.is_loaded:
+            AttributesData.load()
+        draw_ui(context, self.layout, "Object", AttributesData.data["attributes"])
 
 
 class BIM_PT_material_attributes(Panel):
@@ -108,6 +82,8 @@ class BIM_PT_material_attributes(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "material"
+    bl_parent_id = "BIM_PT_object_attributes_properties_and_relationships"
+    bl_options = {"DEFAULT_CLOSED"}
 
     @classmethod
     def poll(cls, context):
@@ -119,4 +95,6 @@ class BIM_PT_material_attributes(Panel):
             return False
 
     def draw(self, context):
-        draw_ui(context, self.layout, "Material")
+        if not MaterialAttributesData.is_loaded:
+            MaterialAttributesData.load()
+        draw_ui(context, self.layout, "Material", MaterialAttributesData.data["attributes"])

src/blenderbim/blenderbim/bim/module/bcf/operator.py

@@ -93,6 +93,7 @@ class LoadBcfTopic(bpy.types.Operator):
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         topic = bcfxml.get_topic(self.topic_guid)
+        bcfxml.get_header(self.topic_guid)
         new = context.scene.BCFProperties.topics[self.topic_index]
         data_map = {
             "name": topic.guid,
@@ -841,6 +842,8 @@ class ActivateBcfViewpoint(bpy.types.Operator):
                 obj.data.angle = 2 * atan(
                     (0.5 * cam_height) / (0.5 * cam_width / tan(radians(camera.field_of_view) / 2))
                 )
+        else:
+            return
 
         z_axis = Vector(
             (-camera.camera_direction.x, -camera.camera_direction.y, -camera.camera_direction.z)

src/blenderbim/blenderbim/bim/module/bcf/ui.py

@@ -29,6 +29,7 @@ class BIM_PT_bcf(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_collaboration_and_data_exchange"
 
     def draw(self, context):
         layout = self.layout

src/blenderbim/blenderbim/bim/module/bimtester/ui.py

@@ -27,6 +27,7 @@ class BIM_PT_qa(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_object_attributes_properties_and_relationships"
 
     def draw(self, context):
         self.layout.use_property_split = True

src/blenderbim/blenderbim/bim/module/boundary/__init__.py

@@ -17,14 +17,28 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
-from . import ui
+from . import ui, operator, prop
 
-classes = (ui.BIM_PT_boundary,)
+classes = (
+    operator.LoadProjectSpaceBoundaries,
+    operator.LoadSpaceBoundaries,
+    operator.LoadBoundary,
+    operator.SelectProjectBoundaries,
+    operator.ColourByRelatedBuildingElement,
+    operator.EnableEditingBoundary,
+    operator.DisableEditingBoundary,
+    operator.EditBoundaryAttributes,
+    operator.UpdateBoundaryGeometry,
+    ui.BIM_PT_Boundary,
+    ui.BIM_PT_SpaceBoundaries,
+    ui.BIM_PT_SceneBoundaries,
+    prop.BIMBoundaryProperties,
+)
 
 
 def register():
-    pass
+    bpy.types.Object.bim_boundary_properties = bpy.props.PointerProperty(type=prop.BIMBoundaryProperties)
 
 
 def unregister():
-    pass
+    del bpy.types.Object.bim_boundary_properties

src/blenderbim/blenderbim/bim/module/boundary/operator.py

@@ -0,0 +1,320 @@
+# 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/>.
+
+import logging
+import bpy
+import mathutils
+import ifcopenshell.util.attribute
+import ifcopenshell.api
+import blenderbim.tool as tool
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.boundary.data import Data
+import blenderbim.bim.import_ifc as import_ifc
+from blenderbim.bim.module.geometry.helper import Helper
+
+
+def get_boundaries_collection(blender_space):
+    space_collection = bpy.data.collections.get(blender_space.name)
+    collection_name = f"Boundaries/{blender_space.BIMObjectProperties.ifc_definition_id}"
+    boundaries_collection = space_collection.children.get(collection_name)
+    if not boundaries_collection:
+        boundaries_collection = bpy.data.collections.new(collection_name)
+        space_collection.children.link(boundaries_collection)
+    return boundaries_collection
+
+
+class Loader:
+    def __init__(self):
+        self.ifc_file = None
+        self.logger = None
+        self.ifc_importer = None
+        self.settings = None
+        self.load_settings()
+        self.load_importer()
+
+    def load_settings(self):
+        self.settings = ifcopenshell.geom.settings()
+        self.settings.set(self.settings.EXCLUDE_SOLIDS_AND_SURFACES, False)
+        self.settings.set(self.settings.USE_BREP_DATA, False)
+
+    def load_importer(self):
+        self.ifc_file = tool.Ifc.get()
+        self.logger = logging.getLogger("ImportIFC")
+        ifc_import_settings = import_ifc.IfcImportSettings.factory(bpy.context, IfcStore.path, self.logger)
+        self.ifc_importer = import_ifc.IfcImporter(ifc_import_settings)
+        self.ifc_importer.file = self.ifc_file
+
+    def load_boundary(self, boundary_id, blender_space):
+        boundary = self.ifc_file.by_id(boundary_id)
+        obj = tool.Ifc.get_object(boundary)
+        if obj:
+            return obj
+        surface = boundary.ConnectionGeometry.SurfaceOnRelatingElement
+        # workaround for unvalid geometry provided by Revit. See https://github.com/IfcOpenShell/IfcOpenShell/issues/635#issuecomment-770366838
+        if surface.is_a("IfcCurveBoundedPlane") and not getattr(surface, "InnerBoundaries", None):
+            surface.InnerBoundaries = ()
+        shape = ifcopenshell.geom.create_shape(self.settings, surface)
+        mesh = self.ifc_importer.create_mesh(None, shape)
+        obj = bpy.data.objects.new(f"{boundary.is_a()}/{boundary.Name}", mesh)
+        obj.matrix_world = blender_space.matrix_world
+        boundaries_collection = get_boundaries_collection(blender_space)
+        boundaries_collection.objects.link(obj)
+        tool.Ifc.link(boundary, obj)
+        return obj
+
+
+class LoadProjectSpaceBoundaries(bpy.types.Operator):
+    bl_idname = "bim.load_project_space_boundaries"
+    bl_label = "Load all project space boundaries"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        loader = Loader()
+        if not Data.is_loaded:
+            Data.load(tool.Ifc.get())
+        for space_id, boundaries_id in Data.spaces.items():
+            blender_space = tool.Ifc.get_object(tool.Ifc.get().by_id(space_id))
+            for boundary_id in boundaries_id:
+                loader.load_boundary(boundary_id, blender_space)
+        return {"FINISHED"}
+
+
+class LoadBoundary(bpy.types.Operator):
+    bl_idname = "bim.load_boundary"
+    bl_label = "Load boundary"
+    bl_options = {"REGISTER", "UNDO"}
+    boundary_id: bpy.props.IntProperty()
+
+    def execute(self, context):
+        loader = Loader()
+        blender_space = context.active_object
+        for obj in context.visible_objects:
+            obj.select_set(False)
+        obj = loader.load_boundary(self.boundary_id, blender_space)
+        obj.select_set(True)
+        bpy.context.view_layer.objects.active = obj
+        return {"FINISHED"}
+
+
+class LoadSpaceBoundaries(bpy.types.Operator):
+    bl_idname = "bim.load_space_boundaries"
+    bl_label = "Load selected space boundaries"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        blender_space = context.active_object
+        oprops = context.active_object.BIMObjectProperties
+        loader = Loader()
+        if not Data.is_loaded:
+            Data.load(tool.Ifc.get())
+        for boundary_id in Data.spaces.get(oprops.ifc_definition_id, []):
+            loader.load_boundary(boundary_id, blender_space)
+        return {"FINISHED"}
+
+
+class SelectProjectBoundaries(bpy.types.Operator):
+    bl_idname = "bim.select_project_space_boundaries"
+    bl_label = "Select all project space boundaries"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        for obj in context.visible_objects:
+            obj.select_set(False)
+        ifc_file = tool.Ifc.get()
+        for boundary_id in Data.boundaries:
+            boundary = ifc_file.by_id(boundary_id)
+            obj = tool.Ifc.get_object(boundary)
+            if obj:
+                obj.select_set(True)
+        return {"FINISHED"}
+
+
+def get_colour(ifc_boundary):
+    """Return a color depending on IfcClass given"""
+    product_colors = {
+        "IfcWall": (0.7, 0.3, 0, 1),
+        "IfcWindow": (0, 0.7, 1, 1),
+        "IfcSlab": (0.7, 0.7, 0.5, 1),
+        "IfcRoof": (0, 0.3, 0, 1),
+        "IfcDoor": (1, 1, 1, 1),
+    }
+    if ifc_boundary.PhysicalOrVirtualBoundary == "VIRTUAL":
+        return (1, 0, 1, 1)
+
+    element = ifc_boundary.RelatedBuildingElement
+    if not element:
+        return (1, 0, 0, 1)
+    for product, colour in product_colors.items():
+        if element.is_a(product):
+            return colour
+    return (0, 0, 0, 1)
+
+
+class ColourByRelatedBuildingElement(bpy.types.Operator):
+    bl_idname = "bim.colour_by_related_building_element"
+    bl_label = "Apply colour based on related building elements"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        IfcStore.begin_transaction(self)
+        self.store_state(context)
+        result = self._execute(context)
+        IfcStore.add_transaction_operation(self)
+        IfcStore.end_transaction(self)
+        return result
+
+    def _execute(self, context):
+        self.file = tool.Ifc.get()
+        for obj in context.visible_objects:
+            if not obj.BIMObjectProperties.ifc_definition_id:
+                continue
+            element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+            if not element.is_a("IfcRelSpaceBoundary"):
+                continue
+            obj.color = get_colour(element)
+        areas = [a for a in context.screen.areas if a.type == "VIEW_3D"]
+        if areas:
+            areas[0].spaces[0].shading.color_type = "OBJECT"
+        return {"FINISHED"}
+
+    def store_state(self, context):
+        areas = [a for a in context.screen.areas if a.type == "VIEW_3D"]
+        if areas:
+            self.transaction_data = {"area": areas[0], "color_type": areas[0].spaces[0].shading.color_type}
+
+    def rollback(self, data):
+        if data:
+            data["area"].spaces[0].shading.color_type = data["color_type"]
+
+    def commit(self, data):
+        if data:
+            data["area"].spaces[0].shading.color_type = "OBJECT"
+
+
+EDITABLE_ATTRIBUTES = {
+    "RelatingSpace": "relating_space",
+    "RelatedBuildingElement": "related_building_element",
+    "ParentBoundary": "parent_boundary",
+    "CorrespondingBoundary": "corresponding_boundary",
+}
+
+
+class EnableEditingBoundary(bpy.types.Operator):
+    bl_idname = "bim.enable_editing_boundary"
+    bl_label = "Edit boundary relations"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        bprops = context.active_object.bim_boundary_properties
+        bprops.is_editing = True
+        boundary = tool.Ifc.get_entity(context.active_object)
+        for ifc_attribute, blender_property in EDITABLE_ATTRIBUTES.items():
+            entity = getattr(boundary, ifc_attribute, None)
+            if not entity:
+                continue
+            obj = tool.Ifc.get_object(entity)
+            if entity and obj:
+                setattr(bprops, blender_property, obj)
+        return {"FINISHED"}
+
+
+class DisableEditingBoundary(bpy.types.Operator):
+    bl_idname = "bim.disable_editing_boundary"
+    bl_label = "Disable editing boundary relations"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        bprops = context.active_object.bim_boundary_properties
+        bprops.is_editing = False
+        for ifc_attribute, blender_property in EDITABLE_ATTRIBUTES.items():
+            setattr(bprops, blender_property, None)
+        return {"FINISHED"}
+
+
+class EditBoundaryAttributes(bpy.types.Operator):
+    bl_idname = "bim.edit_boundary_attributes"
+    bl_label = "Disable editing boundary relations"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        bprops = context.active_object.bim_boundary_properties
+        boundary = tool.Ifc.get_entity(context.active_object)
+        attributes = dict()
+        for ifc_attribute, blender_property in EDITABLE_ATTRIBUTES.items():
+            obj = getattr(bprops, blender_property, None)
+            entity = tool.Ifc.get_entity(obj)
+            attributes[blender_property] = entity
+        ifcopenshell.api.run("boundary.edit_attributes", tool.Ifc.get(), entity=boundary, **attributes)
+        bpy.ops.bim.disable_editing_boundary()
+        return {"FINISHED"}
+
+
+def polyline_from_indexes(mesh, indexes):
+    return tuple(mesh.vertices[i].co for i in indexes)
+
+
+def polyline_to_2d(polyline, placement_matrix):
+    matrix_inv = placement_matrix.inverted()
+    return tuple((matrix_inv @ v).to_2d() for v in polyline)
+
+
+class UpdateBoundaryGeometry(bpy.types.Operator):
+    bl_idname = "bim.update_boundary_geometry"
+    bl_label = "Update boundary geometry"
+    bl_description = """
+    Update boundary connection geometry from mesh. 
+    Mesh must lie on a single plane. It should look like a face or a face with holes.
+    """
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        ifc_file = tool.Ifc.get()
+        helper = Helper(ifc_file)
+        mesh = context.active_object.data
+        curves = helper.auto_detect_curve_bounded_plane(mesh)
+        outer_boundary = polyline_from_indexes(mesh, curves["outer_curve"])
+        inner_boundaries = tuple(polyline_from_indexes(mesh, boundary) for boundary in curves["inner_curves"])
+
+        # Create placement matrix
+        location = outer_boundary[0]
+        i = (outer_boundary[1] - outer_boundary[0]).normalized()
+        k = mesh.polygons[0].normal
+        j = k.cross(i)
+        matrix = mathutils.Matrix()
+        matrix[0].xyz = i
+        matrix[1].xyz = j
+        matrix[2].xyz = k
+        matrix.transpose()
+        matrix.translation = location
+
+        settings = {
+            "rel_space_boundary": tool.Ifc.get_entity(context.active_object),
+            "outer_boundary": polyline_to_2d(outer_boundary, matrix),
+            "inner_boundaries": tuple(polyline_to_2d(boundary, matrix) for boundary in inner_boundaries),
+            "location": location,
+            "axis": k,
+            "ref_direction": i,
+        }
+        ifcopenshell.api.run("boundary.assign_connection_geometry", ifc_file, **settings)
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/boundary/prop.py

@@ -0,0 +1,60 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+from bpy.types import PropertyGroup
+from bpy.props import (
+    PointerProperty,
+    StringProperty,
+    EnumProperty,
+    BoolProperty,
+    IntProperty,
+    FloatProperty,
+    FloatVectorProperty,
+    CollectionProperty,
+)
+import blenderbim.tool as tool
+
+
+def space_filter(self, object):
+    entity = tool.Ifc.get_entity(object)
+    if entity:
+        return entity.is_a("IfcSpace") or entity.is_a("IfcExternalSpatialElement")
+    return False
+
+
+def boundary_filter(self, object):
+    entity = tool.Ifc.get_entity(object)
+    if entity:
+        return entity.is_a("IfcRelSpaceBoundary")
+    return False
+
+
+def element_filter(self, object):
+    entity = tool.Ifc.get_entity(object)
+    if entity:
+        return entity.is_a("IfcElement")
+    return False
+
+
+class BIMBoundaryProperties(PropertyGroup):
+    is_editing: BoolProperty(name="Is Editing")
+    relating_space: PointerProperty(name="RelatingSpace", type=bpy.types.Object, poll=space_filter)
+    related_building_element: PointerProperty(name="RelatedBuildingElement", type=bpy.types.Object, poll=element_filter)
+    parent_boundary: PointerProperty(name="ParentBoundary", type=bpy.types.Object, poll=boundary_filter)
+    corresponding_boundary: PointerProperty(name="CorrespondingBoundary", type=bpy.types.Object, poll=boundary_filter)

src/blenderbim/blenderbim/bim/module/boundary/ui.py

@@ -20,16 +20,37 @@ import bpy
 import blenderbim.bim.helper
 from bpy.types import Panel, UIList
 from blenderbim.bim.ifc import IfcStore
+import blenderbim.tool as tool
 from ifcopenshell.api.boundary.data import Data
 
 
-class BIM_PT_boundary(Panel):
+class BIM_PT_SceneBoundaries(Panel):
     bl_label = "IFC Space Boundaries"
-    bl_idname = "BIM_PT_boundary"
+    bl_id_name = "BIM_PT_scene_boundaries"
     bl_options = {"DEFAULT_CLOSED"}
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_geometry_and_spatial_structure"
+
+    @classmethod
+    def poll(cls, context):
+        return IfcStore.get_file()
+
+    def draw(self, context):
+        row = self.layout.row(align=True)
+        row.operator("bim.load_project_space_boundaries")
+        row.operator("bim.select_project_space_boundaries", text="", icon="RESTRICT_SELECT_OFF")
+        row.operator("bim.colour_by_related_building_element", text="", icon="BRUSH_DATA")
+
+
+class BIM_PT_Boundary(Panel):
+    bl_label = "IFC Space Boundary"
+    bl_idname = "BIM_PT_Boundary"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_geometry_and_spatial_structure_object"
 
     @classmethod
     def poll(cls, context):
@@ -40,15 +61,97 @@ class BIM_PT_boundary(Panel):
             return False
         if not IfcStore.get_element(props.ifc_definition_id):
             return False
-        if IfcStore.get_file().by_id(props.ifc_definition_id).is_a() not in ["IfcSpace", "IfcExternalSpatialElement"]:
-            return False
-        return True
+        entity = IfcStore.get_file().by_id(props.ifc_definition_id)
+        return entity.is_a("IfcRelSpaceBoundary")
 
     def draw(self, context):
-        self.oprops = context.active_object.BIMObjectProperties
-        if not Data.is_loaded:
-            Data.load(IfcStore.get_file())
-        for boundary_id in Data.spaces.get(self.oprops.ifc_definition_id, []):
-            boundary = Data.boundaries[boundary_id]
+        props = context.active_object.BIMObjectProperties
+        ifc_file = tool.Ifc.get()
+        element = ifc_file.by_id(props.ifc_definition_id)
+        boundary = ifc_file.by_id(props.ifc_definition_id)
+        self.bprops = context.active_object.bim_boundary_properties
+        if self.bprops.is_editing:
+            row = self.layout.row(align=True)
+            row.operator("bim.edit_boundary_attributes", icon="CHECKMARK", text="Save Attributes")
+            row.operator("bim.disable_editing_boundary", icon="CANCEL", text="")
+            self.draw_relation_editor(boundary, "RelatingSpace", "relating_space")
+            self.draw_relation_editor(boundary, "RelatedBuildingElement", "related_building_element")
+            self.draw_relation_editor(boundary, "ParentBoundary", "parent_boundary")
+            self.draw_relation_editor(boundary, "CorrespondingBoundary", "corresponding_boundary")
+        else:
             row = self.layout.row()
-            row.label(text=f"{boundary_id}", icon="GHOST_ENABLED")
+            row.operator("bim.enable_editing_boundary", icon="GREASEPENCIL", text="Edit")
+            self.draw_relation_data(boundary, "RelatingSpace")
+            self.draw_relation_data(boundary, "RelatedBuildingElement")
+            self.draw_relation_data(boundary, "ParentBoundary")
+            self.draw_relation_data(boundary, "CorrespondingBoundary")
+            if hasattr(boundary, "InnerBoundaries"):
+                for i, inner_boundary in enumerate(getattr(boundary, "InnerBoundaries", ())):
+                    row = self.layout.row(align=True)
+                    row.label(text="InnerBoundaries")
+                    row.label(text=f"[{i}]")
+                    row.label(text=f"{inner_boundary.is_a()}/{inner_boundary.Name}")
+        row = self.layout.row()
+        row.operator("bim.update_boundary_geometry")
+
+    def draw_relation_data(self, boundary, ifc_attribute: str):
+        row = self.layout.row(align=True)
+        if hasattr(boundary, ifc_attribute):
+            row.label(text=ifc_attribute)
+            entity = getattr(boundary, ifc_attribute)
+            if entity:
+                row.label(text=f"{entity.is_a()}/{entity.Name}")
+                op = row.operator("bim.select_global_id", text="", icon="TRACKER")
+                op.global_id = entity.GlobalId
+            else:
+                row.label(text="")
+
+    def draw_relation_editor(self, boundary, ifc_attribute: str, blender_property: str):
+        if hasattr(boundary, ifc_attribute):
+            row = self.layout.row(align=True)
+            row.prop(self.bprops, blender_property)
+
+
+class BIM_PT_SpaceBoundaries(Panel):
+    bl_label = "IFC Space Boundaries"
+    bl_idname = "BIM_PT_SpaceBoundaries"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+    bl_parent_id = "BIM_PT_geometry_and_spatial_structure_object"
+
+    @classmethod
+    def poll(cls, context):
+        if not context.active_object:
+            return False
+        props = context.active_object.BIMObjectProperties
+        if not props.ifc_definition_id:
+            return False
+        if not IfcStore.get_element(props.ifc_definition_id):
+            return False
+        valid_classes = ("IfcSpace", "IfcExternalSpatialElement")
+        entity = IfcStore.get_file().by_id(props.ifc_definition_id)
+        for ifc_class in valid_classes:
+            if entity.is_a(ifc_class):
+                return True
+        return False
+
+    def draw(self, context):
+        self.props = context.active_object.BIMObjectProperties
+        self.ifc_file = tool.Ifc.get()
+        row = self.layout.row()
+        row.operator("bim.load_space_boundaries")
+        if not Data.is_loaded:
+            Data.load(self.ifc_file)
+        for boundary_id in Data.spaces.get(self.props.ifc_definition_id, []):
+            boundary_data = Data.boundaries[boundary_id]
+            building_element = self.ifc_file.by_id(boundary_data["RelatedBuildingElement"])
+            row = self.layout.row()
+            if building_element:
+                bld_el_description = f"{building_element.is_a()}/{building_element.Name}"
+            else:
+                bld_el_description = None
+            row.label(text=f"{boundary_id} > {bld_el_description}", icon="GHOST_ENABLED")
+            op = row.operator("bim.load_boundary", text="", icon="RESTRICT_SELECT_OFF")
+            op.boundary_id = boundary_id

src/blenderbim/blenderbim/bim/module/brick/__init__.py

@@ -16,17 +16,33 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
-import test.bim.bootstrap
+import bpy
+from . import ui, prop, operator
+
+classes = (
+    operator.AddBrick,
+    operator.AddBrickFeed,
+    operator.AssignBrickReference,
+    operator.CloseBrickProject,
+    operator.ConvertBrickProject,
+    operator.ConvertIfcToBrick,
+    operator.LoadBrickProject,
+    operator.NewBrickFile,
+    operator.RefreshBrickViewer,
+    operator.RewindBrickClass,
+    operator.ViewBrickClass,
+    operator.ViewBrickItem,
+    prop.Brick,
+    prop.BIMBrickProperties,
+    ui.BIM_PT_brickschema,
+    ui.BIM_PT_ifc_brickschema_references,
+    ui.BIM_UL_bricks,
+)
 
 
-class TestExecuteIfcPatch(test.bim.bootstrap.NewFile):
-    @test.bim.bootstrap.scenario
-    def test_executing_ifcpatch(self):
-        return """
-        Given I set "scene.BIMPatchProperties.ifc_patch_recipes" to "OffsetObjectPlacements"
-        And I set "scene.BIMPatchProperties.ifc_patch_input" to "{cwd}/test/files/basic.ifc"
-        And I set "scene.BIMPatchProperties.ifc_patch_output" to "{cwd}/test/files/basic-patched.ifc"
-        And I set "scene.BIMPatchProperties.ifc_patch_args" to "[123454321,0,0,0]"
-        When I press "bim.execute_ifc_patch"
-        Then the file "{cwd}/test/files/basic-patched.ifc" should contain "123454321"
-        """
+def register():
+    bpy.types.Scene.BIMBrickProperties = bpy.props.PointerProperty(type=prop.BIMBrickProperties)
+
+
+def unregister():
+    del bpy.types.Scene.BIMBrickProperties

src/blenderbim/blenderbim/bim/module/brick/data.py

@@ -0,0 +1,177 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import blenderbim.tool as tool
+from blenderbim.tool.brick import BrickStore
+
+try:
+    from rdflib import URIRef, BNode
+except:
+    # See #1860
+    print("Warning: brickschema not available.")
+
+
+def refresh():
+    BrickschemaData.is_loaded = False
+    BrickschemaReferencesData.is_loaded = False
+
+
+class BrickschemaData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data = {
+            "is_loaded": cls.get_is_loaded(),
+            "attributes": cls.attributes(),
+            "namespaces": cls.namespaces(),
+            "brick_equipment_classes": cls.brick_equipment_classes(),
+        }
+
+    @classmethod
+    def get_is_loaded(cls):
+        return BrickStore.graph is not None
+
+    @classmethod
+    def attributes(cls):
+        if BrickStore.graph is None:
+            return []
+        props = bpy.context.scene.BIMBrickProperties
+        try:
+            brick = props.bricks[props.active_brick_index]
+        except:
+            return []
+        results = []
+        uri = brick.uri
+        query = BrickStore.graph.query(
+            """
+            PREFIX brick: <https://brickschema.org/schema/Brick#>
+            PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+            PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+            SELECT DISTINCT ?name ?value ?sp ?sv WHERE {
+               <{uri}> ?name ?value .
+               OPTIONAL {
+               { ?name rdfs:range brick:TimeseriesReference . }
+                UNION
+               { ?name a brick:EntityProperty . }
+                ?value ?sp ?sv }
+            }
+        """.replace(
+                "{uri}", uri
+            )
+        )
+
+        for row in query:
+            name = row.get("name").toPython().split("#")[-1]
+            value = row.get("value")
+            results.append(
+                {
+                    "name": name,
+                    "value": value.toPython().split("#")[-1],
+                    "is_uri": isinstance(value, URIRef),
+                    "value_uri": value.toPython(),
+                    "is_globalid": name == "globalID",
+                }
+            )
+            if isinstance(row.get("value"), BNode):
+                for s, p, o in BrickStore.graph.triples((value, None, None)):
+                    results.append(
+                        {
+                            "name": name + ":" + p.toPython().split("#")[-1],
+                            "value": o.toPython().split("#")[-1],
+                            "is_uri": isinstance(o, URIRef),
+                            "value_uri": o.toPython(),
+                            "is_globalid": p.toPython().split("#")[-1] == "globalID",
+                        }
+                    )
+        return results
+
+    @classmethod
+    def namespaces(cls):
+        if BrickStore.graph is None:
+            return []
+        results = []
+        for alias, uri in BrickStore.graph.namespaces():
+            results.append((uri, f"{alias}: {uri}", ""))
+        return results
+
+    @classmethod
+    def brick_equipment_classes(cls):
+        if BrickStore.graph is None:
+            return []
+        results = []
+        query = BrickStore.graph.query(
+            """
+            PREFIX brick: <https://brickschema.org/schema/Brick#>
+            PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+            SELECT ?class WHERE {
+                ?class rdfs:subClassOf* brick:Equipment .
+            }
+        """
+        )
+        for uri in sorted([x[0].toPython() for x in query]):
+            results.append((uri, uri.split("#")[-1], ""))
+        return results
+
+
+class BrickschemaReferencesData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data = {"is_loaded": cls.get_is_loaded(), "libraries": cls.libraries(), "references": cls.references()}
+
+    @classmethod
+    def get_is_loaded(cls):
+        return BrickStore.graph is not None
+
+    @classmethod
+    def libraries(cls):
+        results = []
+        for library in tool.Ifc.get().by_type("IfcLibraryInformation"):
+            if tool.Ifc.get_schema() == "IFC2X3":
+                results.append((str(library.id()), library.Name or "Unnamed", ""))
+            elif ".ttl" in library.Location:
+                results.append((str(library.id()), library.Name or "Unnamed", ""))
+        return results
+
+    @classmethod
+    def references(cls):
+        results = []
+        for rel in getattr(tool.Ifc.get_entity(bpy.context.active_object), "HasAssociations", []):
+            if rel.is_a("IfcRelAssociatesLibrary"):
+                reference = rel.RelatingLibrary
+                if tool.Ifc.get_schema() == "IFC2X3" and "#" not in reference.ItemReference:
+                    continue
+                if tool.Ifc.get_schema() != "IFC2X3" and "#" not in reference.Identification:
+                    continue
+                results.append(
+                    {
+                        "id": reference.id(),
+                        "identification": reference.ItemReference
+                        if tool.Ifc.get_schema() == "IFC2X3"
+                        else reference.Identification,
+                        "name": reference.Name or "Unnamed",
+                    }
+                )
+        return results

src/blenderbim/blenderbim/bim/module/brick/operator.py

@@ -0,0 +1,174 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import ifcopenshell.api
+import blenderbim.tool as tool
+import blenderbim.core.brick as core
+import blenderbim.bim.handler
+from blenderbim.bim.ifc import IfcStore
+
+
+class Operator:
+    def execute(self, context):
+        self._execute(context)
+        blenderbim.bim.handler.refresh_ui_data()
+        return {"FINISHED"}
+
+
+class LoadBrickProject(bpy.types.Operator, Operator):
+    bl_idname = "bim.load_brick_project"
+    bl_label = "Load Brickschema Project"
+    bl_options = {"REGISTER", "UNDO"}
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_glob: bpy.props.StringProperty(default="*.ttl", options={"HIDDEN"})
+
+    def _execute(self, context):
+        core.load_brick_project(tool.Brick, filepath=self.filepath)
+
+    def invoke(self, context, event):
+        context.window_manager.fileselect_add(self)
+        return {"RUNNING_MODAL"}
+
+
+class ViewBrickClass(bpy.types.Operator, Operator):
+    bl_idname = "bim.view_brick_class"
+    bl_label = "View Brick Class"
+    bl_options = {"REGISTER", "UNDO"}
+    brick_class: bpy.props.StringProperty(name="Brick Class")
+
+    def _execute(self, context):
+        core.view_brick_class(tool.Brick, brick_class=self.brick_class)
+
+
+class ViewBrickItem(bpy.types.Operator, Operator):
+    bl_idname = "bim.view_brick_item"
+    bl_label = "View Brick Item"
+    bl_options = {"REGISTER", "UNDO"}
+    item: bpy.props.StringProperty(name="Brick Item")
+
+    def _execute(self, context):
+        core.view_brick_item(tool.Brick, item=self.item)
+
+
+class RewindBrickClass(bpy.types.Operator, Operator):
+    bl_idname = "bim.rewind_brick_class"
+    bl_label = "Rewind Brick Class"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.rewind_brick_class(tool.Brick)
+
+
+class CloseBrickProject(bpy.types.Operator, Operator):
+    bl_idname = "bim.close_brick_project"
+    bl_label = "Close Brick Project"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.close_brick_project(tool.Brick)
+
+
+class ConvertBrickProject(bpy.types.Operator, Operator):
+    bl_idname = "bim.convert_brick_project"
+    bl_label = "Convert Brick Project"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.convert_brick_project(tool.Ifc, tool.Brick)
+
+
+class AssignBrickReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.assign_brick_reference"
+    bl_label = "Assign Brick Reference"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.scene.BIMBrickProperties
+        core.assign_brick_reference(
+            tool.Ifc,
+            tool.Brick,
+            obj=context.active_object,
+            library=tool.Ifc.get().by_id(int(props.libraries)),
+            brick_uri=props.bricks[props.active_brick_index].uri,
+        )
+
+
+class AddBrick(bpy.types.Operator, Operator):
+    bl_idname = "bim.add_brick"
+    bl_label = "Add Brick"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.scene.BIMBrickProperties
+        library = None
+        if props.libraries:
+            library = tool.Ifc.get().by_id(int(props.libraries))
+        core.add_brick(
+            tool.Ifc,
+            tool.Brick,
+            obj=context.active_object,
+            namespace=props.namespace,
+            brick_class=props.brick_equipment_class,
+            library=library,
+        )
+
+
+class AddBrickFeed(bpy.types.Operator, Operator):
+    bl_idname = "bim.add_brick_feed"
+    bl_label = "Add Brick Feed"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.add_brick_feed(
+            tool.Ifc,
+            tool.Brick,
+            source=[o for o in context.selected_objects if o != context.active_object][0],
+            destination=context.active_object,
+        )
+
+
+class ConvertIfcToBrick(bpy.types.Operator, Operator):
+    bl_idname = "bim.convert_ifc_to_brick"
+    bl_label = "Convert IFC To Brick"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        props = context.scene.BIMBrickProperties
+        library = None
+        if props.libraries:
+            library = tool.Ifc.get().by_id(int(props.libraries))
+        core.convert_ifc_to_brick(tool.Brick, namespace=props.namespace, library=library)
+
+
+class NewBrickFile(bpy.types.Operator, Operator):
+    bl_idname = "bim.new_brick_file"
+    bl_label = "New Brick File"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.new_brick_file(tool.Brick)
+
+
+class RefreshBrickViewer(bpy.types.Operator, Operator):
+    bl_idname = "bim.refresh_brick_viewer"
+    bl_label = "Refresh Brick Viewer"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.refresh_brick_viewer(tool.Brick)

src/blenderbim/blenderbim/bim/module/brick/prop.py

@@ -0,0 +1,71 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+from blenderbim.bim.module.brick.data import BrickschemaData, BrickschemaReferencesData
+from blenderbim.bim.prop import StrProperty, Attribute
+from bpy.types import PropertyGroup
+from bpy.props import (
+    PointerProperty,
+    StringProperty,
+    EnumProperty,
+    BoolProperty,
+    IntProperty,
+    FloatProperty,
+    FloatVectorProperty,
+    CollectionProperty,
+)
+
+
+def update_active_brick_index(self, context):
+    BrickschemaData.is_loaded = False
+
+
+def get_libraries(self, context):
+    if not BrickschemaReferencesData.is_loaded:
+        BrickschemaReferencesData.load()
+    return BrickschemaReferencesData.data["libraries"]
+
+
+def get_namespaces(self, context):
+    if not BrickschemaData.is_loaded:
+        BrickschemaData.load()
+    return BrickschemaData.data["namespaces"]
+
+
+def get_brick_equipment_classes(self, context):
+    if not BrickschemaData.is_loaded:
+        BrickschemaData.load()
+    return BrickschemaData.data["brick_equipment_classes"]
+
+
+class Brick(PropertyGroup):
+    name: StringProperty(name="Name")
+    label: StringProperty(name="Label")
+    uri: StringProperty(name="URI")
+    total_items: IntProperty(name="Total Items")
+
+
+class BIMBrickProperties(PropertyGroup):
+    active_brick_class: StringProperty(name="Active Brick Class")
+    brick_breadcrumbs: CollectionProperty(name="Brick Breadcrumbs", type=StrProperty)
+    bricks: CollectionProperty(name="Bricks", type=Brick)
+    active_brick_index: IntProperty(name="Active Brick Index", update=update_active_brick_index)
+    libraries: EnumProperty(name="Libraries", items=get_libraries)
+    namespace: EnumProperty(name="Namespace", items=get_namespaces)
+    brick_equipment_class: EnumProperty(name="Brick Equipment Class", items=get_brick_equipment_classes)

src/blenderbim/blenderbim/bim/module/brick/ui.py

@@ -0,0 +1,128 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import blenderbim.tool as tool
+from bpy.types import Panel, UIList
+from blenderbim.bim.module.brick.data import BrickschemaData, BrickschemaReferencesData
+
+
+class BIM_PT_brickschema(Panel):
+    bl_label = "Brickschema Project"
+    bl_idname = "BIM_PT_brickschema"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+
+    def draw(self, context):
+        if not BrickschemaData.is_loaded:
+            BrickschemaData.load()
+        self.props = context.scene.BIMBrickProperties
+
+        if not BrickschemaData.data["is_loaded"]:
+            row = self.layout.row(align=True)
+            row.operator("bim.new_brick_file", text="Create Project")
+            row.operator("bim.load_brick_project", text="Load Project")
+            return
+
+        row = self.layout.row(align=True)
+        if len(self.props.brick_breadcrumbs):
+            row.operator("bim.rewind_brick_class", text="", icon="FRAME_PREV")
+        row.label(text=self.props.active_brick_class)
+        row.operator("bim.refresh_brick_viewer", text="", icon="FILE_REFRESH")
+        row.operator("bim.close_brick_project", text="", icon="CANCEL")
+
+        row = self.layout.row(align=True)
+        row.prop(self.props, "namespace", text="")
+        row.prop(self.props, "brick_equipment_class", text="")
+        row.operator("bim.add_brick", text="", icon="ADD")
+        row.operator("bim.add_brick_feed", text="", icon="PLUGIN")
+
+        self.layout.template_list("BIM_UL_bricks", "", self.props, "bricks", self.props, "active_brick_index")
+
+        for attribute in BrickschemaData.data["attributes"]:
+            row = self.layout.row(align=True)
+            row.label(text=attribute["name"])
+            row.label(text=attribute["value"])
+            if attribute["is_uri"]:
+                op = row.operator("bim.view_brick_item", text="", icon="DISCLOSURE_TRI_RIGHT")
+                op.item = attribute["value_uri"]
+            if attribute["is_globalid"]:
+                op = row.operator("bim.select_global_id", icon="RESTRICT_SELECT_OFF", text="")
+                op.global_id = attribute["value"]
+
+
+class BIM_PT_ifc_brickschema_references(Panel):
+    bl_label = "IFC Brickschema References"
+    bl_idname = "BIM_PT_ifc_brickschema_references"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_brickschema"
+
+    @classmethod
+    def poll(cls, context):
+        return tool.Ifc.get()
+
+    def draw(self, context):
+        if not BrickschemaReferencesData.is_loaded:
+            BrickschemaReferencesData.load()
+        self.props = context.scene.BIMBrickProperties
+
+        if not BrickschemaReferencesData.data["is_loaded"]:
+            row = self.layout.row()
+            row.label(text="No Brickschema Project Loaded")
+            return
+
+        if not BrickschemaReferencesData.data["libraries"]:
+            row = self.layout.row(align=True)
+            row.label(text="No IFC Libraries")
+            row.operator("bim.convert_brick_project", text="", icon="ADD")
+            return
+
+        row = self.layout.row(align=True)
+        row.prop(self.props, "libraries")
+        row.operator("bim.convert_brick_project", text="", icon="ADD")
+
+        row = self.layout.row(align=True)
+        row.operator("bim.assign_brick_reference", icon="ADD")
+        row.operator("bim.convert_ifc_to_brick", icon="IMPORT")
+
+        if not BrickschemaReferencesData.data["references"]:
+            row = self.layout.row()
+            row.label(text="No References")
+
+        for reference in BrickschemaReferencesData.data["references"]:
+            row = self.layout.row(align=True)
+            row.label(text=reference["identification"], icon="ASSET_MANAGER")
+            row.label(text=reference["name"])
+            row.operator("bim.unassign_library_reference", text="", icon="X").reference = reference["id"]
+            row.operator("bim.view_brick_item", text="", icon="DISCLOSURE_TRI_RIGHT").item = reference["identification"]
+
+
+class BIM_UL_bricks(UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        if item:
+            row = layout.row(align=True)
+            if item.total_items:
+                op = row.operator("bim.view_brick_class", text="", icon="DISCLOSURE_TRI_RIGHT", emboss=False)
+                op.brick_class = item.name
+            row.label(text=item.label if item.label else item.name)
+            if item.total_items:
+                row.label(text=str(item.total_items))

src/blenderbim/blenderbim/bim/module/clash/ui.py

@@ -27,6 +27,7 @@ class BIM_PT_ifcclash(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_quality_control"
 
     def draw(self, context):
         layout = self.layout

src/blenderbim/blenderbim/bim/module/classification/ui.py

@@ -29,6 +29,7 @@ class BIM_PT_classifications(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_project_and_template_setup"
 
     @classmethod
     def poll(cls, context):
@@ -86,6 +87,7 @@ class BIM_PT_classification_references(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_object_attributes_properties_and_relationships"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/cobie/ui.py

@@ -27,6 +27,7 @@ class BIM_PT_cobie(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_collaboration_and_data_exchange"
 
     def draw(self, context):
         layout = self.layout

src/blenderbim/blenderbim/bim/module/constraint/ui.py

@@ -29,6 +29,7 @@ class BIM_PT_constraints(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_misc"
 
     @classmethod
     def poll(cls, context):
@@ -73,6 +74,7 @@ class BIM_PT_object_constraints(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_misc_object"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/context/ui.py

@@ -29,6 +29,7 @@ class BIM_PT_context(bpy.types.Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_geometry_and_spatial_structure"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/cost/ui.py

@@ -31,6 +31,7 @@ class BIM_PT_cost_schedules(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_4D5D"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/csv/__init__.py

@@ -22,10 +22,13 @@ from . import ui, prop, operator
 classes = (
     operator.AddCsvAttribute,
     operator.RemoveCsvAttribute,
+    operator.RemoveAllCsvAttributes,
     operator.ExportIfcCsv,
     operator.ImportIfcCsv,
     operator.EyedropIfcCsv,
     operator.SelectCsvIfcFile,
+    operator.ImportCsvAttributes,
+    operator.ExportCsvAttributes,
     prop.CsvProperties,
     ui.BIM_PT_ifccsv,
 )

src/blenderbim/blenderbim/bim/module/csv/operator.py

@@ -49,6 +49,65 @@ class RemoveCsvAttribute(bpy.types.Operator):
         return {"FINISHED"}
 
 
+class RemoveAllCsvAttributes(bpy.types.Operator):
+    bl_idname = "bim.remove_all_csv_attributes"
+    bl_label = "Remove all CSV Attributes"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        context.scene.CsvProperties.csv_attributes.clear()
+        return {"FINISHED"}
+
+
+class ImportCsvAttributes(bpy.types.Operator):
+    bl_idname = "bim.import_csv_attributes"
+    bl_label = "Import CSV Attributes"
+    bl_options = {"REGISTER", "UNDO"}
+    filter_glob: bpy.props.StringProperty(default="*.json", options={"HIDDEN"})
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+
+    def execute(self, context):
+        csv_attributes = context.scene.CsvProperties.csv_attributes
+        csv_attributes.clear()
+        csv_json = json.load(open(self.filepath))
+        i = 0
+        for attribute in csv_json:
+            csv_attributes.add()
+            csv_attributes[i].name = attribute
+            i += 1
+
+        return {"FINISHED"}
+
+    def invoke(self, context, event):
+        context.window_manager.fileselect_add(self)
+        return {"RUNNING_MODAL"}
+
+
+class ExportCsvAttributes(bpy.types.Operator):
+    bl_idname = "bim.export_csv_attributes"
+    bl_label = "Export CSV Attributes"
+    bl_options = {"REGISTER", "UNDO"}
+    filename_ext = ".json"
+    filter_glob: bpy.props.StringProperty(default="*.json", options={"HIDDEN"})
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+
+    def execute(self, context):
+        csv_attributes = []
+        with open(self.filepath, "w") as outfile:
+            for attribute in context.scene.CsvProperties.csv_attributes:
+                csv_attributes.append(attribute.name)
+
+            json.dump(csv_attributes, outfile)
+
+        return {"FINISHED"}
+
+    def invoke(self, context, event):
+        self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".json")
+        WindowManager = context.window_manager
+        WindowManager.fileselect_add(self)
+        return {"RUNNING_MODAL"}
+
+
 class ExportIfcCsv(bpy.types.Operator):
     bl_idname = "bim.export_ifccsv"
     bl_label = "Export IFC to CSV"

src/blenderbim/blenderbim/bim/module/csv/prop.py

@@ -32,7 +32,7 @@ from bpy.props import (
 
 
 class CsvProperties(PropertyGroup):
-    csv_ifc_file: StringProperty(default="", name="CSV IFC File")
+    csv_ifc_file: StringProperty(default="", name="IFC File")
     ifc_selector: StringProperty(default="", name="IFC Selector")
     csv_attributes: CollectionProperty(name="CSV Attributes", type=StrProperty)
     csv_delimiter: EnumProperty(

src/blenderbim/blenderbim/bim/module/csv/ui.py

@@ -27,6 +27,7 @@ class BIM_PT_ifccsv(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_collaboration_and_data_exchange"
 
     def draw(self, context):
         layout = self.layout
@@ -46,15 +47,29 @@ class BIM_PT_ifccsv(Panel):
         row = layout.row(align=True)
         row.prop(props, "ifc_selector")
         row.operator("bim.eyedrop_ifccsv", icon="EYEDROPPER", text="")
+        layout.separator()
 
         row = layout.row()
-        row.operator("bim.add_csv_attribute")
+        split = row.split(factor=0.7)
+        c = split.column()
+        c.operator("bim.add_csv_attribute")
+        c = split.column()
+        c.operator("bim.import_csv_attributes", icon="IMPORT", text="Load Template")
 
         for index, attribute in enumerate(props.csv_attributes):
             row = layout.row(align=True)
             row.prop(attribute, "name", text="")
             row.operator("bim.remove_csv_attribute", icon="X", text="").index = index
 
+        if props.csv_attributes:
+            row = layout.row()
+            row.label()
+            row.operator("bim.remove_all_csv_attributes", icon="CANCEL", text="")
+            row = layout.row()
+            row.operator("bim.export_csv_attributes", icon="EXPORT", text="Create Template")
+
+        layout.separator()
+
         row = layout.row(align=True)
         row.prop(props, "csv_delimiter")
 
@@ -62,6 +77,9 @@ class BIM_PT_ifccsv(Panel):
             row = layout.row(align=True)
             row.prop(props, "csv_custom_delimiter")
 
-        row = layout.row(align=True)
-        row.operator("bim.export_ifccsv", icon="EXPORT")
-        row.operator("bim.import_ifccsv", icon="IMPORT")
+        row = layout.row()
+        split = row.split(factor=0.7)
+        c = split.column()
+        c.operator("bim.export_ifccsv", icon="EXPORT")
+        c = split.column()
+        c.operator("bim.import_ifccsv", icon="IMPORT")

src/blenderbim/blenderbim/bim/module/debug/__init__.py

@@ -20,17 +20,21 @@ import bpy
 from . import ui, prop, operator
 
 classes = (
-    operator.PrintIfcFile,
-    operator.PurgeIfcLinks,
-    operator.PrintObjectPlacement,
-    operator.ValidateIfcFile,
-    operator.ProfileImportIFC,
     operator.CreateAllShapes,
     operator.CreateShapeFromStepId,
-    operator.SelectHighPolygonMeshes,
-    operator.InspectFromStepId,
     operator.InspectFromObject,
+    operator.InspectFromStepId,
+    operator.ParseExpress,
+    operator.PrintIfcFile,
+    operator.PrintObjectPlacement,
+    operator.ProfileImportIFC,
+    operator.PurgeHdf5Cache,
+    operator.PurgeIfcLinks,
     operator.RewindInspector,
+    operator.SelectExpressFile,
+    operator.SelectHighPolygonMeshes,
+    operator.SelectHighestPolygonMeshes,
+    operator.ValidateIfcFile,
     prop.BIMDebugProperties,
     ui.BIM_PT_debug,
 )

src/blenderbim/blenderbim/bim/module/debug/operator.py

@@ -16,20 +16,25 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+import os
 import bpy
 import time
 import logging
 import ifcopenshell
 import ifcopenshell.util.placement
 import ifcopenshell.util.representation
+import blenderbim.tool as tool
+import blenderbim.core.debug as core
 import blenderbim.bim.handler
 import blenderbim.bim.import_ifc as import_ifc
+import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
 
 
 class PrintIfcFile(bpy.types.Operator):
     bl_idname = "bim.print_ifc_file"
     bl_label = "Print IFC File"
+    bl_description = "Prints the file contents in the system console.\nAccess it with Window > Toggle System Console"
 
     @classmethod
     def poll(cls, context):
@@ -43,6 +48,7 @@ class PrintIfcFile(bpy.types.Operator):
 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."
 
     def execute(self, context):
         for obj in bpy.data.objects:
@@ -96,7 +102,8 @@ class ProfileImportIFC(bpy.types.Operator):
 
 class CreateAllShapes(bpy.types.Operator):
     bl_idname = "bim.create_all_shapes"
-    bl_label = "Create All Shapes"
+    bl_label = "Test All Shapes"
+    bl_description = "Look for errors in all the shapes contained in the file"
 
     @classmethod
     def poll(cls, context):
@@ -126,7 +133,7 @@ class CreateAllShapes(bpy.types.Operator):
             except:
                 failures.append(element)
                 print("***** FAILURE *****")
-        print("Failures:")
+        print(f"Failures: {len(failures)}")
         for failure in failures:
             print(failure)
         return {"FINISHED"}
@@ -135,6 +142,7 @@ class CreateAllShapes(bpy.types.Operator):
 class CreateShapeFromStepId(bpy.types.Operator):
     bl_idname = "bim.create_shape_from_step_id"
     bl_label = "Create Shape From STEP ID"
+    bl_description = "Recreate a mesh object from a STEP ID"
     bl_options = {"REGISTER", "UNDO"}
     should_include_curves: bpy.props.BoolProperty()
 
@@ -154,9 +162,12 @@ class CreateShapeFromStepId(bpy.types.Operator):
         if self.should_include_curves:
             settings.set(settings.INCLUDE_CURVES, True)
         shape = ifcopenshell.geom.create_shape(settings, element)
-        ifc_importer = import_ifc.IfcImporter(self.ifc_import_settings)
-        ifc_importer.file = self.file
-        mesh = ifc_importer.create_mesh(element, shape)
+        if shape:
+            ifc_importer = import_ifc.IfcImporter(self.ifc_import_settings)
+            ifc_importer.file = self.file
+            mesh = ifc_importer.create_mesh(element, shape)
+        else:
+            mesh = None
         obj = bpy.data.objects.new("Debug", mesh)
         context.scene.collection.objects.link(obj)
         return {"FINISHED"}
@@ -165,20 +176,37 @@ class CreateShapeFromStepId(bpy.types.Operator):
 class SelectHighPolygonMeshes(bpy.types.Operator):
     bl_idname = "bim.select_high_polygon_meshes"
     bl_label = "Select High Polygon Meshes"
+    bl_description = "Select objects containing more polygons than the specified number"
     bl_options = {"REGISTER", "UNDO"}
+    threshold: bpy.props.IntProperty()
 
     def execute(self, context):
-        [
-            o.select_set(True)
-            for o in context.view_layer.objects
-            if o.type == "MESH" and len(o.data.polygons) > context.scene.BIMDebugProperties.number_of_polygons
-        ]
+        for obj in context.view_layer.objects:
+            if obj.type == "MESH" and len(obj.data.polygons) > self.threshold:
+                obj.select_set(True)
+        return {"FINISHED"}
+
+
+class SelectHighestPolygonMeshes(bpy.types.Operator):
+    bl_idname = "bim.select_highest_polygon_meshes"
+    bl_label = "Select Highest Polygon Meshes"
+    bl_description = "Select objects with a number of polygons superior to the specified percentile"
+    bl_options = {"REGISTER", "UNDO"}
+    percentile: bpy.props.IntProperty()
+
+    def execute(self, context):
+        objects = [obj for obj in context.view_layer.objects if obj.type == "MESH"]
+        if objects:
+            percentile = len(max(objects, key=lambda o: len(o.data.polygons)).data.polygons) * self.percentile / 100
+            print(f"Selected all Meshes with more than {int(percentile)} polygons")
+            [obj.select_set(True) for obj in objects if len(obj.data.polygons) > percentile]
         return {"FINISHED"}
 
 
 class RewindInspector(bpy.types.Operator):
     bl_idname = "bim.rewind_inspector"
     bl_label = "Rewind Inspector"
+    bl_description = "Rewind the Inspector to the previously inspected element"
 
     def execute(self, context):
         props = context.scene.BIMDebugProperties
@@ -195,6 +223,7 @@ class RewindInspector(bpy.types.Operator):
 class InspectFromStepId(bpy.types.Operator):
     bl_idname = "bim.inspect_from_step_id"
     bl_label = "Inspect From STEP ID"
+    bl_description = "Inspect the attributes and references by looking up the specified STEP ID"
     step_id: bpy.props.IntProperty()
 
     @classmethod
@@ -245,12 +274,21 @@ class InspectFromStepId(bpy.types.Operator):
 class InspectFromObject(bpy.types.Operator):
     bl_idname = "bim.inspect_from_object"
     bl_label = "Inspect From Object"
+    bl_description = "Inspect the Active Object's attributes and references"
+
+    @classmethod
+    def poll(cls, context):
+        if not context.active_object:
+            if bpy.app.version >= (3, 0, 0):
+                cls.poll_message_set("No Active Object")
+        elif not context.active_object.BIMObjectProperties.ifc_definition_id:
+            if bpy.app.version >= (3, 0, 0):
+                cls.poll_message_set("Active Object doesn't have an IFC definition")
+        else:
+            return True
 
     def execute(self, context):
-        ifc_definition_id = context.active_object.BIMObjectProperties.ifc_definition_id
-        if not ifc_definition_id:
-            return {"FINISHED"}
-        bpy.ops.bim.inspect_from_step_id(step_id=ifc_definition_id)
+        bpy.ops.bim.inspect_from_step_id(step_id=context.active_object.BIMObjectProperties.ifc_definition_id)
         return {"FINISHED"}
 
 
@@ -262,3 +300,40 @@ class PrintObjectPlacement(bpy.types.Operator):
     def execute(self, context):
         print(ifcopenshell.util.placement.get_local_placement(IfcStore.get_file().by_id(self.step_id)))
         return {"FINISHED"}
+
+
+class ParseExpress(bpy.types.Operator):
+    bl_idname = "bim.parse_express"
+    bl_label = "Parse Express"
+
+    def execute(self, context):
+        core.parse_express(tool.Debug, context.scene.BIMDebugProperties.express_file)
+        blenderbim.bim.handler.refresh_ui_data()
+        return {"FINISHED"}
+
+
+class SelectExpressFile(bpy.types.Operator):
+    bl_idname = "bim.select_express_file"
+    bl_label = "Select Express File"
+    bl_options = {"REGISTER", "UNDO"}
+    bl_description = "Select an IFC EXPRESS definition"
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_glob: bpy.props.StringProperty(default="*.exp", options={"HIDDEN"})
+
+    def execute(self, context):
+        if os.path.exists(self.filepath) and "exp" in os.path.splitext(self.filepath)[1]:
+            context.scene.BIMDebugProperties.express_file = self.filepath
+        return {"FINISHED"}
+
+    def invoke(self, context, event):
+        context.window_manager.fileselect_add(self)
+        return {"RUNNING_MODAL"}
+
+
+class PurgeHdf5Cache(bpy.types.Operator):
+    bl_idname = "bim.purge_hdf5_cache"
+    bl_label = "Purge HDF5 Cache"
+
+    def execute(self, context):
+        core.purge_hdf5_cache(tool.Debug)
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/debug/prop.py

@@ -33,8 +33,10 @@ from bpy.props import (
 class BIMDebugProperties(PropertyGroup):
     step_id: IntProperty(name="STEP ID")
     number_of_polygons: IntProperty(name="Number of Polygons", min=0)
-    active_step_id: IntProperty(name="STEP ID")
+    percentile_of_polygons: IntProperty(name="Percentile of Polygons", min=0, max=100, default=90, subtype="PERCENTAGE")
+    active_step_id: IntProperty(name="STEP ID", default=1, soft_min=1)
     step_id_breadcrumb: CollectionProperty(name="STEP ID Breadcrumb", type=StrProperty)
     attributes: CollectionProperty(name="Attributes", type=Attribute)
     inverse_attributes: CollectionProperty(name="Inverse Attributes", type=Attribute)
     inverse_references: CollectionProperty(name="Inverse References", type=Attribute)
+    express_file: StringProperty(name="Express File")

src/blenderbim/blenderbim/bim/module/debug/ui.py

@@ -27,6 +27,7 @@ class BIM_PT_debug(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_quality_control"
 
     def draw(self, context):
         layout = self.layout
@@ -38,9 +39,17 @@ class BIM_PT_debug(Panel):
         row.operator("bim.validate_ifc_file", icon="CHECKMARK", text="")
         row.operator("bim.select_ifc_file", icon="FILE_FOLDER", text="")
 
+        row = self.layout.row(align=True)
+        row.prop(props, "express_file", text="")
+        row.operator("bim.parse_express", icon="IMPORT", text="")
+        row.operator("bim.select_express_file", icon="FILE_FOLDER", text="")
+
         row = layout.row()
         row.operator("bim.print_ifc_file")
 
+        row = layout.row()
+        row.operator("bim.purge_hdf5_cache")
+
         row = layout.row()
         row.operator("bim.purge_ifc_links")
 
@@ -56,8 +65,13 @@ class BIM_PT_debug(Panel):
         row.prop(props, "step_id", text="")
 
         row = layout.split(factor=0.7, align=True)
-        row.operator("bim.select_high_polygon_meshes")
+        row.operator("bim.select_high_polygon_meshes").threshold = context.scene.BIMDebugProperties.number_of_polygons
         row.prop(props, "number_of_polygons", text="")
+        row = layout.split(factor=0.7, align=True)
+        row.operator(
+            "bim.select_highest_polygon_meshes"
+        ).percentile = context.scene.BIMDebugProperties.percentile_of_polygons
+        row.prop(props, "percentile_of_polygons", text="")
 
         layout.label(text="Inspector:")
 

src/blenderbim/blenderbim/bim/module/diff/ui.py

@@ -27,6 +27,7 @@ class BIM_PT_diff(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_quality_control"
 
     def draw(self, context):
         layout = self.layout

src/blenderbim/blenderbim/bim/module/document/ui.py

@@ -29,6 +29,7 @@ class BIM_PT_documents(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_collaboration_and_data_exchange"
 
     @classmethod
     def poll(cls, context):
@@ -77,6 +78,7 @@ class BIM_PT_object_documents(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_misc_object"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/drawing/__init__.py

@@ -35,7 +35,6 @@ classes = (
     operator.ResizeText,
     operator.AddVariable,
     operator.RemoveVariable,
-    operator.PropagateTextData,
     operator.RemoveDrawing,
     operator.AddDrawingStyle,
     operator.RemoveDrawingStyle,
@@ -54,6 +53,9 @@ classes = (
     operator.CleanWireframes,
     operator.CopyGrid,
     operator.AddSectionsAnnotations,
+    operator.EditText,
+    operator.DisableEditingText,
+    operator.EnableEditingText,
     prop.Variable,
     prop.Drawing,
     prop.Schedule,
@@ -81,6 +83,7 @@ classes = (
 def register():
     bpy.types.Scene.DocProperties = bpy.props.PointerProperty(type=prop.DocProperties)
     bpy.types.Camera.BIMCameraProperties = bpy.props.PointerProperty(type=prop.BIMCameraProperties)
+    bpy.types.Object.BIMTextProperties = bpy.props.PointerProperty(type=prop.BIMTextProperties)
     bpy.types.TextCurve.BIMTextProperties = bpy.props.PointerProperty(type=prop.BIMTextProperties)
     bpy.app.handlers.load_post.append(handler.toggleDecorationsOnLoad)
     bpy.app.handlers.depsgraph_update_pre.append(handler.depsgraph_update_pre_handler)

src/blenderbim/blenderbim/bim/module/drawing/annotation.py

@@ -18,6 +18,7 @@
 
 import bpy
 import os
+import blenderbim.tool as tool
 from mathutils import Vector
 
 
@@ -150,18 +151,30 @@ class Annotator:
         return obj
 
     @staticmethod
-    def get_annotation_obj(name, data_type, context):
+    def get_annotation_obj(object_type, data_type, context):
         collection = context.scene.camera.users_collection[0]
-        for obj in collection.objects:
-            if name in obj.name:
-                return obj
-        if data_type == "mesh":
-            data = bpy.data.meshes.new(name)
-        elif data_type == "curve":
-            data = bpy.data.curves.new(name, type="CURVE")
+        if object_type == "TEXT":
+            obj = bpy.data.objects.new(object_type, None)
+            collection.objects.link(obj)
+            return obj
+        elif object_type == "TEXT_LEADER":
+            data = bpy.data.curves.new(object_type, type="CURVE")
             data.dimensions = "3D"
             data.resolution_u = 2
-        obj = bpy.data.objects.new(name, data)
+            obj = bpy.data.objects.new(object_type, data)
+            collection.objects.link(obj)
+            return obj
+        for obj in collection.objects:
+            element = tool.Ifc.get_entity(obj)
+            if element and element.ObjectType == object_type:
+                return obj
+        if data_type == "mesh":
+            data = bpy.data.meshes.new(object_type)
+        elif data_type == "curve":
+            data = bpy.data.curves.new(object_type, type="CURVE")
+            data.dimensions = "3D"
+            data.resolution_u = 2
+        obj = bpy.data.objects.new(object_type, data)
         collection.objects.link(obj)
         return obj
 

src/blenderbim/blenderbim/bim/module/drawing/data.py

@@ -0,0 +1,47 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import ifcopenshell.util.representation
+import blenderbim.tool as tool
+
+
+def refresh():
+    TextData.is_loaded = False
+
+
+class TextData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.data = {"attributes": cls.attributes()}
+        cls.is_loaded = True
+
+    @classmethod
+    def attributes(cls):
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        if not element or not element.is_a("IfcAnnotation") or element.ObjectType not in ["TEXT", "TEXT_LEADER"]:
+            return []
+        rep = ifcopenshell.util.representation.get_representation(element, "Plan", "Annotation")
+        text_literal = [i for i in rep.Items if i.is_a("IfcTextLiteral")][0]
+        return [
+            {"name": "Literal", "value": text_literal.Literal},
+            {"name": "BoxAlignment", "value": text_literal.BoxAlignment},
+        ]

src/blenderbim/blenderbim/bim/module/drawing/decoration.py

@@ -16,32 +16,32 @@
 # 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/>.
 
-"""Viewport decorations"""
+import os
+import gpu
+import bpy
+import blf
+import bgl
 import math
+import bmesh
+import blenderbim.tool as tool
+import blenderbim.bim.module.drawing.helper as helper
 from functools import reduce
 from itertools import chain
-
 from bpy.types import SpaceView3D
 from mathutils import Vector, Matrix
-import bpy
-import bmesh
-import blf
 from bpy_extras.view3d_utils import location_3d_to_region_2d
-import gpu
-import bgl
 from gpu.types import GPUShader, GPUBatch, GPUIndexBuf, GPUVertBuf, GPUVertFormat
 from gpu_extras.batch import batch_for_shader
-import blenderbim.bim.module.drawing.helper as helper
 
 
 class BaseDecorator:
     # base name of objects to decorate
-    basename = "IfcAnnotation/Something"
+    objecttype = "NOTDEFINED"
 
     DEF_GLSL = """
         #define PI 3.141592653589793
-        #define MAX_POINTS 64
-        #define CIRCLE_SEGS 24
+        #define MAX_POINTS 32
+        #define CIRCLE_SEGS 12
     """
 
     LIB_GLSL = """
@@ -90,6 +90,7 @@ class BaseDecorator:
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=2) out;
@@ -134,13 +135,48 @@ class BaseDecorator:
             defines=self.DEF_GLSL,
         )
 
+        # Horrific prototype code to ensure bgl draws at drawing scales
+        # https://blender.stackexchange.com/questions/16493/is-there-a-way-to-fit-the-viewport-to-the-current-field-of-view
+        def is_landscape(render):
+            return render.resolution_x > render.resolution_y
+
+        def get_scale(camera):
+            if camera.data.BIMCameraProperties.diagram_scale == "CUSTOM":
+                human_scale, fraction = camera.data.BIMCameraProperties.custom_diagram_scale.split("|")
+            else:
+                human_scale, fraction = camera.data.BIMCameraProperties.diagram_scale.split("|")
+            numerator, denominator = fraction.split("/")
+            return float(numerator) / float(denominator)
+
+        camera = bpy.context.scene.camera
+        render = bpy.context.scene.render
+        if is_landscape(render):
+            camera_width_model = camera.data.ortho_scale
+        else:
+            camera_width_model = camera.data.ortho_scale / render.resolution_y * render.resolution_x
+        self.camera_width_mm = get_scale(camera) * camera_width_model
+
+        self.font_id = blf.load(
+            os.path.join(bpy.context.scene.BIMProperties.data_dir, "fonts", "OpenGost Type B TT.ttf")
+        )
+
+    def camera_zoom_to_factor(self, zoom):
+        return math.pow(((zoom / 50) + math.sqrt(2)) / 2, 2)
+
     def get_objects(self, collection):
         """find relevant objects
-        using class.basename
+        using class.objecttype
 
         returns: iterable of blender objects
         """
-        return filter(lambda o: self.basename in o.name, collection.all_objects)
+        results = []
+        for obj in collection.all_objects:
+            element = tool.Ifc.get_entity(obj)
+            if not element:
+                continue
+            if element.is_a("IfcAnnotation") and element.ObjectType == self.objecttype:
+                results.append(obj)
+        return results
 
     def get_path_geom(self, obj, topo=True):
         """Parses path geometry into line segments
@@ -208,7 +244,7 @@ class BaseDecorator:
         return vertices, indices
 
     def decorate(self, context, object):
-        """perform actuall drawing stuff"""
+        """perform actual drawing stuff"""
         raise NotImplementedError()
 
     def draw_lines(self, context, obj, vertices, indices, topology=None):
@@ -241,6 +277,15 @@ class BaseDecorator:
         self.shader.uniform_float("winsize", (region.width, region.height))
         self.shader.uniform_float("color", color)
 
+        # Horrific prototype code
+        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.camera_width_mm
+        # 0.00025 is a magic constant number I visually discovered to get the right number.
+        # It probably should be dynamically calculated using system.dpi or something.
+        viewport_drawing_scale = 0.00025 * mm_to_px
+        self.shader.uniform_float("viewportDrawingScale", viewport_drawing_scale)
+
         batch.draw(self.shader)
 
     def draw_label(self, context, text, pos, dir, gap=4, center=True, vcenter=False):
@@ -251,8 +296,9 @@ class BaseDecorator:
 
         aligned and centered at segment middle
         """
-        font_id = 0
-        font_size = 16
+        # 0 is the default font, but we're fancier than that
+        font_id = self.font_id
+
         dpi = context.preferences.system.dpi
 
         color = context.scene.DocProperties.decorations_colour
@@ -261,6 +307,16 @@ class BaseDecorator:
         cos = math.cos(ang)
         sin = math.sin(ang)
 
+        # Horrific prototype code
+        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.camera_width_mm
+        # 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
+        font_size = int(0.004118616 * mm_to_px)
+
         blf.size(font_id, font_size, dpi)
 
         w, h = 0, 0
@@ -284,6 +340,9 @@ class BaseDecorator:
 
         blf.rotation(font_id, ang)
         blf.color(font_id, *color)
+        #blf.enable(font_id, blf.SHADOW)
+        #blf.shadow(font_id, 5, 0, 0, 0, 1)
+        #blf.shadow_offset(font_id, 1, -1)
         blf.draw(font_id, text)
         blf.disable(font_id, blf.ROTATION)
 
@@ -311,7 +370,7 @@ class DimensionDecorator(BaseDecorator):
     - puts metric text next to each segment
     """
 
-    basename = "IfcAnnotation/Dimension"
+    objecttype = "DIMENSION"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -323,6 +382,7 @@ class DimensionDecorator(BaseDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -339,7 +399,7 @@ class DimensionDecorator(BaseDecorator):
         vec4 p;
 
         vec4 head[3];
-        arrow_head(dir, ARROW_SIZE, ARROW_ANGLE, head);
+        arrow_head(dir, viewportDrawingScale * ARROW_SIZE, ARROW_ANGLE, head);
 
         // start edge arrow
         gl_Position = p0;
@@ -406,7 +466,7 @@ class EqualityDecorator(DimensionDecorator):
     - puts 'EQ' label
     """
 
-    basename = "IfcAnnotation/Equal"
+    objecttype = "EQUAL_DIMENSION"
 
     def draw_labels(self, context, obj, vertices, indices):
         region = context.region
@@ -423,12 +483,11 @@ class EqualityDecorator(DimensionDecorator):
 
 
 class LeaderDecorator(BaseDecorator):
-    """Decorating stairs
+    """Decorating text with arrows
     - head point with arrow
-    - middle points w/out decorations
     """
 
-    basename = "IfcAnnotation/Leader"
+    objecttype = "TEXT_LEADER"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -440,6 +499,7 @@ class LeaderDecorator(BaseDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -461,7 +521,7 @@ class LeaderDecorator(BaseDecorator):
         // end edge arrow for last segment
         if (t1 == 2u) {
             vec4 head[3];
-            arrow_head(dir, ARROW_SIZE, ARROW_ANGLE, head);
+            arrow_head(dir, viewportDrawingScale * ARROW_SIZE, ARROW_ANGLE, head);
 
             gl_Position = p1;
             EmitVertex();
@@ -475,7 +535,7 @@ class LeaderDecorator(BaseDecorator):
             EmitVertex();
             EndPrimitive();
 
-            gap1 = dir * ARROW_SIZE;
+            gap1 = dir * viewportDrawingScale * ARROW_SIZE;
         }
 
         // stem, adjusted for and arrow
@@ -488,9 +548,24 @@ class LeaderDecorator(BaseDecorator):
     }
     """
 
+    def get_spline_end(self, obj):
+        spline = obj.data.splines[0]
+        spline_points = spline.bezier_points if spline.bezier_points else spline.points
+        if not spline_points:
+            return Vector((0, 0, 0))
+        return obj.matrix_world @ spline_points[0].co
+
     def decorate(self, context, obj):
         verts, idxs, topo = self.get_path_geom(obj)
         self.draw_lines(context, obj, verts, idxs, topo)
+        self.draw_labels(context, obj)
+
+    def draw_labels(self, context, obj):
+        region = context.region
+        region3d = context.region_data
+        dir = Vector((1, 0))
+        pos = location_3d_to_region_2d(region, region3d, self.get_spline_end(obj))
+        self.draw_label(context, obj.BIMTextProperties.value, pos, dir, gap=0, center=False, vcenter=False)
 
 
 class StairDecorator(BaseDecorator):
@@ -500,12 +575,12 @@ class StairDecorator(BaseDecorator):
     - middle points w/out decorations
     """
 
-    basename = "IfcAnnotation/Stair"
+    objecttype = "STAIR_ARROW"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
         + """
-        #define CIRCLE_SIZE 8.0
+        #define CIRCLE_SIZE 6.0
         #define ARROW_ANGLE PI / 3.0
         #define ARROW_SIZE 24.0
     """
@@ -513,6 +588,7 @@ class StairDecorator(BaseDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -534,7 +610,7 @@ class StairDecorator(BaseDecorator):
         // start edge circle for first segment
         if (t0 == 1u) {
             vec4 head[CIRCLE_SEGS];
-            circle_head(CIRCLE_SIZE, head);
+            circle_head(viewportDrawingScale * CIRCLE_SIZE, head);
 
             for(int i=0; i<CIRCLE_SEGS; i++) {
                 p = p0w + head[i];
@@ -546,13 +622,13 @@ class StairDecorator(BaseDecorator):
             EmitVertex();
             EndPrimitive();
 
-            gap0 = dir * CIRCLE_SIZE;
+            gap0 = dir * viewportDrawingScale * CIRCLE_SIZE;
         }
 
         // end edge arrow for last segment
         if (t1 == 2u) {
             vec4 head[3];
-            arrow_head(dir, ARROW_SIZE, ARROW_ANGLE, head);
+            arrow_head(dir, viewportDrawingScale * ARROW_SIZE, ARROW_ANGLE, head);
 
             p = p1w - head[1];
             gl_Position = WIN2CLIP(p);
@@ -583,7 +659,7 @@ class StairDecorator(BaseDecorator):
 
 
 class HiddenDecorator(BaseDecorator):
-    basename = "IfcAnnotation/Hidden"
+    objecttype = "HIDDEN_LINE"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -628,13 +704,14 @@ class HiddenDecorator(BaseDecorator):
     """
 
     FRAG_GLSL = """
+    uniform float viewportDrawingScale;
     uniform vec4 color;
     in vec2 gl_FragCoord;
     in float dist;
     out vec4 fragColor;
 
     void main() {
-        uint bit = uint(fract(dist / DASH_SIZE) * 32);
+        uint bit = uint(fract(dist / (viewportDrawingScale * DASH_SIZE)) * 32);
         if ((DASH_PATTERN & (1U<<bit)) == 0U) discard;
         fragColor = color;
     }
@@ -649,7 +726,7 @@ class HiddenDecorator(BaseDecorator):
 
 
 class MiscDecorator(HiddenDecorator):
-    basename = "IfcAnnotation/Misc"
+    objecttype = "MISC"
 
     FRAG_GLSL = BaseDecorator.FRAG_GLSL
 
@@ -677,7 +754,7 @@ class LevelDecorator(BaseDecorator):
 
 
 class PlanLevelDecorator(LevelDecorator):
-    basename = "IfcAnnotation/Plan Level"
+    objecttype = "PLAN_LEVEL"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -689,6 +766,7 @@ class PlanLevelDecorator(LevelDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -710,7 +788,7 @@ class PlanLevelDecorator(LevelDecorator):
         // end edge cross+circle for last segment
         if (t1 == 2u) {
             vec4 head_o[CIRCLE_SEGS];
-            circle_head(CIRCLE_SIZE, head_o);
+            circle_head(viewportDrawingScale * CIRCLE_SIZE, head_o);
 
             for(int i=0; i<CIRCLE_SEGS; i++) {
                 p = p1w + head_o[i];
@@ -723,7 +801,7 @@ class PlanLevelDecorator(LevelDecorator):
             EndPrimitive();
 
             vec4 head_x[3];
-            cross_head(dir, CROSS_SIZE, head_x);
+            cross_head(dir, viewportDrawingScale * CROSS_SIZE, head_x);
 
             p = p1w + head_x[1];
             gl_Position = WIN2CLIP(p);
@@ -762,7 +840,7 @@ class PlanLevelDecorator(LevelDecorator):
 
 
 class SectionLevelDecorator(LevelDecorator):
-    basename = "IfcAnnotation/Section Level"
+    objecttype = "SECTION_LEVEL"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -774,6 +852,7 @@ class SectionLevelDecorator(LevelDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -781,8 +860,8 @@ class SectionLevelDecorator(LevelDecorator):
     out float dist; // distance from starging point along segment
 
     void callout_head(in vec4 dir, out vec4 head[4]) {
-        vec2 gap = dir.xy * CALLOUT_GAP;
-        vec2 tail = dir.xy * -CALLOUT_SIZE;
+        vec2 gap = dir.xy * viewportDrawingScale * CALLOUT_GAP;
+        vec2 tail = dir.xy * viewportDrawingScale * -CALLOUT_SIZE;
         vec2 side = cross(vec3(dir.xy, 0), vec3(0, 0, 1)).xy * CALLOUT_GAP;
 
         head[0] = vec4(tail + side, 0, 0);
@@ -850,7 +929,7 @@ class BreakDecorator(BaseDecorator):
     Uses first two vertices in verts list.
     """
 
-    basename = "IfcAnnotation/Break"
+    objecttype = "BREAKLINE"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -862,6 +941,7 @@ class BreakDecorator(BaseDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -878,8 +958,8 @@ class BreakDecorator(BaseDecorator):
 
         vec4 p;
 
-        vec4 quart = dir * BREAK_LENGTH * .25;
-        vec4 side = vec4(cross(vec3(dir.xy, 0), vec3(0, 0, 1)).xy, 0, 0) * BREAK_WIDTH;
+        vec4 quart = dir * viewportDrawingScale * BREAK_LENGTH * .25;
+        vec4 side = vec4(cross(vec3(dir.xy, 0), vec3(0, 0, 1)).xy, 0, 0) * viewportDrawingScale * BREAK_WIDTH;
 
         // TODO: check if there's enough length for zigzag
 
@@ -928,7 +1008,7 @@ class BreakDecorator(BaseDecorator):
 
 
 class GridDecorator(BaseDecorator):
-    basename = "IfcGridAxis/"
+    objecttype = "GRID"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -941,6 +1021,7 @@ class GridDecorator(BaseDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -955,12 +1036,12 @@ class GridDecorator(BaseDecorator):
 
         vec4 p0w = CLIP2WIN(p0), p1w = CLIP2WIN(p1);
         vec4 edge = p1w - p0w, dir = normalize(edge);
-        vec4 gap = dir * CIRCLE_SIZE;
+        vec4 gap = dir * CIRCLE_SIZE * viewportDrawingScale;
 
         vec4 p;
 
         vec4 head[CIRCLE_SEGS];
-        circle_head(CIRCLE_SIZE, head);
+        circle_head(CIRCLE_SIZE * viewportDrawingScale, head);
 
         dist = 0;
 
@@ -1045,7 +1126,7 @@ class GridDecorator(BaseDecorator):
 
 
 class SectionViewDecorator(LevelDecorator):
-    basename = "IfcAnnotation/Section"
+    objecttype = "SECTION"
 
     DEF_GLSL = (
         BaseDecorator.DEF_GLSL
@@ -1058,6 +1139,7 @@ class SectionViewDecorator(LevelDecorator):
 
     GEOM_GLSL = """
     uniform vec2 winsize;
+    uniform float viewportDrawingScale;
 
     layout(lines) in;
     layout(line_strip, max_vertices=MAX_POINTS) out;
@@ -1078,12 +1160,12 @@ class SectionViewDecorator(LevelDecorator):
 
         vec4 p0w = CLIP2WIN(p0), p1w = CLIP2WIN(p1);
         vec4 edge = p1w - p0w, dir = normalize(edge);
-        vec4 gap = dir * TRIANGLE_L * .5;
+        vec4 gap = dir * viewportDrawingScale * TRIANGLE_L * .5;
         vec4 side = vec4(cross(vec3(dir.xy, 0), vec3(0, 0, 1)).xy, 0, 0);
         vec4 p;
 
         vec4 head[CIRCLE_SEGS];
-        circle_head(CIRCLE_SIZE, head);
+        circle_head(viewportDrawingScale * CIRCLE_SIZE, head);
 
         vec4 head3[3];
 
@@ -1099,7 +1181,7 @@ class SectionViewDecorator(LevelDecorator):
         EndPrimitive();
 
         // start edge triangle
-        triangle_head(dir, -side, TRIANGLE_L, TRIANGLE_W, head3);
+        triangle_head(dir, -side, viewportDrawingScale * TRIANGLE_L, viewportDrawingScale * TRIANGLE_W, head3);
         p = p0w + head3[0];
         gl_Position = WIN2CLIP(p);
         EmitVertex();
@@ -1123,7 +1205,7 @@ class SectionViewDecorator(LevelDecorator):
         EndPrimitive();
 
         // end edge triangle
-        triangle_head(-dir, -side, TRIANGLE_L, TRIANGLE_W, head3);
+        triangle_head(-dir, -side, viewportDrawingScale * TRIANGLE_L, viewportDrawingScale * TRIANGLE_W, head3);
         p = p1w + head3[0];
         gl_Position = WIN2CLIP(p);
         EmitVertex();
@@ -1149,6 +1231,90 @@ class SectionViewDecorator(LevelDecorator):
         self.draw_lines(context, obj, verts, [(0, 1)])
 
 
+class TextDecorator(BaseDecorator):
+    """Decorator for text objects
+    - draws the text next to the origin
+    """
+
+    objecttype = "TEXT"
+
+    DEF_GLSL = (
+        BaseDecorator.DEF_GLSL
+        + """
+        #define ARROW_ANGLE PI / 12.0
+        #define ARROW_SIZE 16.0
+    """
+    )
+
+    GEOM_GLSL = """
+    uniform vec2 winsize;
+    uniform float viewportDrawingScale;
+
+    layout(lines) in;
+    layout(line_strip, max_vertices=MAX_POINTS) out;
+
+    void main() {
+        vec4 clip2win = matCLIP2WIN();
+        vec4 win2clip = matWIN2CLIP();
+
+        vec4 p0 = gl_in[0].gl_Position, p1 = gl_in[1].gl_Position;
+
+        vec4 p0w = CLIP2WIN(p0), p1w = CLIP2WIN(p1);
+        vec4 edge = p1w - p0w, dir = normalize(edge);
+
+        vec4 p;
+
+        vec4 head[3];
+        arrow_head(dir, viewportDrawingScale * ARROW_SIZE, ARROW_ANGLE, head);
+
+        // start edge arrow
+        gl_Position = p0;
+        EmitVertex();
+        p = p0w + head[1];
+        gl_Position = WIN2CLIP(p);
+        EmitVertex();
+        p = p0w + head[2];
+        gl_Position = WIN2CLIP(p);
+        EmitVertex();
+        gl_Position = p0;
+        EmitVertex();
+        EndPrimitive();
+
+        // end edge arrow
+        gl_Position = p1;
+        EmitVertex();
+        p = p1w - head[1];
+        gl_Position = WIN2CLIP(p);
+        EmitVertex();
+        p = p1w - head[2];
+        gl_Position = WIN2CLIP(p);
+        EmitVertex();
+        gl_Position = p1;
+        EmitVertex();
+        EndPrimitive();
+
+        // stem, with gaps for arrows
+        p = p0w + head[0];
+        gl_Position = WIN2CLIP(p);
+        EmitVertex();
+        p = p1w - head[0];
+        gl_Position = WIN2CLIP(p);
+        EmitVertex();
+        EndPrimitive();
+    }
+    """
+
+    def decorate(self, context, obj):
+        self.draw_labels(context, obj)
+
+    def draw_labels(self, context, obj):
+        region = context.region
+        region3d = context.region_data
+        dir = Vector((1, 0))
+        pos = location_3d_to_region_2d(region, region3d, obj.matrix_world.translation)
+        self.draw_label(context, obj.BIMTextProperties.value, pos, dir, gap=0, center=False, vcenter=False)
+
+
 class DecorationsHandler:
     decorators_classes = [
         DimensionDecorator,
@@ -1162,6 +1328,7 @@ class DecorationsHandler:
         StairDecorator,
         BreakDecorator,
         SectionViewDecorator,
+        TextDecorator,
     ]
 
     installed = None

src/blenderbim/blenderbim/bim/module/drawing/helper.py

@@ -263,7 +263,7 @@ def get_active_drawing(scene):
         return None, None
     try:
         drawing = props.active_drawing
-        return scene.collection.children["Views"].children[f"IfcGroup/{drawing.name}"], drawing.camera
+        return drawing.camera.users_collection[0], drawing.camera
     except (KeyError, IndexError):
         raise RuntimeError("missing drawing collection")
 

src/blenderbim/blenderbim/bim/module/drawing/operator.py

@@ -31,13 +31,17 @@ import ifcopenshell.geom
 import ifcopenshell.util.selector
 import ifcopenshell.util.representation
 import blenderbim.bim.schema
+import blenderbim.tool as tool
+import blenderbim.core.drawing as core
 import blenderbim.bim.module.drawing.svgwriter as svgwriter
 import blenderbim.bim.module.drawing.annotation as annotation
 import blenderbim.bim.module.drawing.sheeter as sheeter
 import blenderbim.bim.module.drawing.scheduler as scheduler
 import blenderbim.bim.module.drawing.helper as helper
-from blenderbim.bim.module.drawing.prop import RasterStyleProperty
+import blenderbim.bim.export_ifc
+from lxml import etree
 from mathutils import Vector, Matrix, Euler, geometry
+from blenderbim.bim.module.drawing.prop import RasterStyleProperty
 from blenderbim.bim.ifc import IfcStore
 from ifcopenshell.api.group.data import Data as GroupData
 from ifcopenshell.api.pset.data import Data as PsetData
@@ -54,6 +58,13 @@ def open_with_user_command(user_command, path):
         webbrowser.open("file://" + path)
 
 
+class Operator:
+    def execute(self, context):
+        IfcStore.execute_ifc_operator(self, context)
+        blenderbim.bim.handler.refresh_ui_data()
+        return {"FINISHED"}
+
+
 class AddDrawing(bpy.types.Operator):
     bl_idname = "bim.add_drawing"
     bl_label = "Add Drawing"
@@ -76,7 +87,7 @@ class AddDrawing(bpy.types.Operator):
         view_collection = bpy.data.collections.new("IfcGroup/" + new.name)
         views_collection.children.link(view_collection)
         camera = bpy.data.objects.new(new.name, bpy.data.cameras.new(new.name))
-        camera.location = (0, 0, 1.7)  # The view shall be 1.7m above the origin
+        camera.location = (0, 0, 1.5)  # The view shall be 1.5m above the origin
         camera.data.type = "ORTHO"
         camera.data.ortho_scale = 50  # The default of 6m is too small
         camera.data.clip_end = 10  # A slightly more reasonable default
@@ -140,12 +151,16 @@ class CreateDrawing(bpy.types.Operator):
 
     def execute(self, context):
         self.camera = context.scene.camera
+        self.camera_element = tool.Ifc.get_entity(self.camera)
         self.file = IfcStore.get_file()
         self.time = None
         start = time.time()
         self.profile_code("Start drawing generation process")
         self.props = context.scene.DocProperties
         self.drawing_name = self.file.by_id(self.camera.BIMObjectProperties.ifc_definition_id).Name
+        self.get_scale()
+        if self.camera.data.BIMCameraProperties.update_representation(self.camera):
+            bpy.ops.bim.update_representation(obj=self.camera.name, ifc_representation_class="")
         underlay_svg = self.generate_underlay(context)
         self.profile_code("Generate underlay")
         linework_svg = self.generate_linework(context)
@@ -190,7 +205,7 @@ class CreateDrawing(bpy.types.Operator):
                         elif "<defs>" in line:
                             should_skip = True
                             continue
-                        elif "</style>" in line:
+                        elif "</defs>" in line:
                             should_skip = False
                             continue
                         elif should_skip:
@@ -248,21 +263,15 @@ class CreateDrawing(bpy.types.Operator):
                 bpy.data.objects[name].hide_set(value)
 
         svg_writer = svgwriter.SvgWriter()
-        if self.camera.data.BIMCameraProperties.diagram_scale == "CUSTOM":
-            human_scale, fraction = self.camera.data.BIMCameraProperties.custom_diagram_scale.split("|")
-        else:
-            human_scale, fraction = self.camera.data.BIMCameraProperties.diagram_scale.split("|")
-        if self.camera.data.BIMCameraProperties.is_nts:
-            svg_writer.human_scale = "NTS"
-        else:
-            svg_writer.human_scale = human_scale
         render = context.scene.render
-        if self.is_landscape():
+        if self.is_landscape(render):
             width = self.camera.data.ortho_scale
             height = width / render.resolution_x * render.resolution_y
         else:
             height = self.camera.data.ortho_scale
             width = height / render.resolution_y * render.resolution_x
+        svg_writer.human_scale = self.human_scale
+        svg_writer.scale = self.scale
         svg_writer.output = svg_path
         svg_writer.data_dir = context.scene.BIMProperties.data_dir
         svg_writer.vector_style = drawing_style.vector_style
@@ -280,62 +289,160 @@ class CreateDrawing(bpy.types.Operator):
         svg_path = os.path.join(context.scene.BIMProperties.data_dir, "cache", self.drawing_name + "-linework.svg")
         if os.path.isfile(svg_path) and self.props.should_use_linework_cache:
             return svg_path
+
+        # All very hackish whilst prototyping
+        exporter = blenderbim.bim.export_ifc.IfcExporter(None)
+        exporter.file = tool.Ifc.get()
+        invalidated_guids = exporter.sync_deletions()
+        invalidated_elements = exporter.sync_all_objects()
+        invalidated_elements += exporter.sync_edited_objects()
+        [invalidated_guids.append(e.GlobalId) for e in invalidated_elements if hasattr(e, "GlobalId")]
+
+        # If we have already calculated it in the SVG in the past, don't recalculate
+        edited_guids = set()
+        for obj in IfcStore.edited_objs:
+            element = tool.Ifc.get_entity(obj)
+            edited_guids.add(element.GlobalId) if hasattr(element, "GlobalId") else None
+        cached_linework = set()
+        if os.path.isfile(svg_path):
+            tree = etree.parse(svg_path)
+            root = tree.getroot()
+            cached_linework = {
+                el.get("{http://www.ifcopenshell.org/ns}guid")
+                for el in root.findall(".//{http://www.w3.org/2000/svg}g[@{http://www.ifcopenshell.org/ns}guid]")
+            }
+        cached_linework -= edited_guids
+
         # This is a work in progress. See #1153 and #1564.
-        # Switch from old to new if you are testing v0.7.0
-        self.generate_linework_old(context, svg_path)
-        # self.generate_linework_new(svg_path)
+        import hashlib
+        import ifcopenshell.draw
+
+        files = {context.scene.BIMProperties.ifc_file: tool.Ifc.get()}
+
+        for ifc_path, ifc in files.items():
+            # Don't use draw.main() just whilst we're prototyping and experimenting
+            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")
+
+            # Get all representation contexts to see what we're dealing with
+            # A drawing prioritises a target view context first, followed by a body context as a fallback
+            body_contexts = []
+            target_view_contexts = []
+            for rep_context in ifc.by_type("IfcGeometricRepresentationContext"):
+                if rep_context.is_a("IfcGeometricRepresentationSubContext"):
+                    if rep_context.TargetView == context.scene.camera.data.BIMCameraProperties.target_view:
+                        target_view_contexts.append(rep_context.id())
+                        continue
+                if rep_context.ContextIdentifier in ["Body", "Facetation"]:
+                    body_contexts.append(rep_context.id())
+                    continue
+                if rep_context.is_a() == "IfcGeometricRepresentationContext" and rep_context.ContextType == "Model":
+                    body_contexts.append(rep_context.id())
+                    continue
+
+            elements = set(ifc.by_type("IfcElement")) - set(ifc.by_type("IfcOpeningElement"))
+
+            self.setup_serialiser(ifc)
+            cache_settings = ifcopenshell.geom.settings(DISABLE_TRIANGULATION=True)
+            cache = IfcStore.get_cache()
+            [cache.remove(guid) for guid in invalidated_guids]
+
+            if target_view_contexts and elements:
+                geom_settings = ifcopenshell.geom.settings(DISABLE_TRIANGULATION=True, INCLUDE_CURVES=True)
+                geom_settings.set_context_ids(target_view_contexts)
+                it = ifcopenshell.geom.iterator(geom_settings, ifc, multiprocessing.cpu_count(), include=elements)
+                it.set_cache(cache)
+                processed = set()
+                for elem in self.yield_from_iterator(it):
+                    processed.add(ifc.by_id(elem.id))
+                    self.serialiser.write(elem)
+                elements -= processed
+
+            if body_contexts and elements:
+                geom_settings = ifcopenshell.geom.settings(
+                    DISABLE_TRIANGULATION=True,
+                )
+                geom_settings.set_context_ids(body_contexts)
+                it = ifcopenshell.geom.iterator(geom_settings, ifc, multiprocessing.cpu_count(), include=elements)
+                it.set_cache(cache)
+                for elem in self.yield_from_iterator(it):
+                    self.serialiser.write(elem)
+
+            geom_settings = ifcopenshell.geom.settings(
+                DISABLE_TRIANGULATION=True,
+            )
+            it = ifcopenshell.geom.iterator(geom_settings, ifc, include=[self.camera_element])
+            for elem in self.yield_from_iterator(it):
+                self.serialiser.write(elem)
+
+        self.serialiser.finalize()
+        results = self.svg_buffer.get_value()
+
+        root = etree.fromstring(results)
+        self.enrich_linework_with_metadata(root)
+        self.move_projection_to_bottom(root)
+        with open(svg_path, "wb") as svg:
+            svg.write(etree.tostring(root))
+
         return svg_path
 
-    def generate_linework_new(self, svg_path):
-        settings = ifcopenshell.geom.settings(
-            APPLY_DEFAULT_MATERIALS=True,
-            DISABLE_TRIANGULATION=True,
-            INCLUDE_CURVES=True,
-            EXCLUDE_SOLIDS_AND_SURFACES=False,
-        )
-        buffer = ifcopenshell.geom.serializers.buffer()
-        serialiser = ifcopenshell.geom.serializers.svg(buffer, settings)
-        serialiser.setFile(self.file)
-        serialiser.setElevationRef("DRAWING")
-        serialiser.setUseNamespace(True)
-        serialiser.setAlwaysProject(True)
-        serialiser.setUseHlrPoly(True)
-        serialiser.setWithoutStoreys(True)
-        excluded_elements = []
-        for ifc_class in ["IfcSpace", "IfcOpeningElement", "IfcDoor", "IfcWindow"]:
-            excluded_elements += self.file.by_type(ifc_class)
-        for element in ifcopenshell.geom.iterate(
-            settings, self.file, multiprocessing.cpu_count(), exclude=excluded_elements
-        ):
-            serialiser.write(element)
-        serialiser.finalize()
-        with open(svg_path, "w") as svg:
-            svg.write(buffer.get_value())
+    def setup_serialiser(self, ifc):
+        self.svg_settings = ifcopenshell.geom.settings(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.setUseNamespace(True)
+        self.serialiser.setAlwaysProject(True)
+        self.serialiser.setAutoElevation(False)
+        self.serialiser.setAutoSection(False)
+        self.serialiser.setPrintSpaceNames(False)
+        self.serialiser.setPrintSpaceAreas(False)
+        self.serialiser.setDrawDoorArcs(False)
+        self.serialiser.setNoCSS(True)
+        self.serialiser.setElevationRefGuid(self.camera_element.GlobalId)
+        self.serialiser.setScale(self.scale)
+        self.serialiser.setSubtractionSettings(ifcopenshell.ifcopenshell_wrapper.ALWAYS)
+        # tree = ifcopenshell.geom.tree()
+        # This instructs the tree to explode BReps into faces and return
+        # the style of the face when running tree.select_ray()
+        # tree.enable_face_styles(True)
 
-    def generate_linework_old(self, context, svg_path):
-        ifcconvert_path = os.path.join(cwd, "..", "..", "..", "libs", "IfcConvert")
-        subprocess.run(
-            [
-                ifcconvert_path,
-                context.scene.BIMProperties.ifc_file,
-                "-yv",
-                svg_path,
-                "--plan",
-                "--model",
-                "--elevation-ref=DRAWING",
-                "--svg-xmlns",
-                "--svg-project",
-                "--svg-poly",
-                "--svg-without-storeys",
-                "--exclude",
-                "entities",
-                "IfcSpace",
-                "IfcOpeningElement",
-                "IfcDoor",
-                "IfcWindow",
-            ]
-        )
-        return svg_path
+    def yield_from_iterator(self, it):
+        if it.initialize():
+            while True:
+                yield it.get()
+                if not it.next():
+                    break
+
+    def enrich_linework_with_metadata(self, root):
+        ifc = tool.Ifc.get()
+        for el in root.findall(".//{http://www.w3.org/2000/svg}g[@{http://www.ifcopenshell.org/ns}guid]"):
+            classes = ["cut"]
+            try:
+                element = ifc.by_guid(el.get("{http://www.ifcopenshell.org/ns}guid"))
+            except:
+                # See #1861 - freshly created guids cannot be extracted unfortunately
+                continue
+            material = ifcopenshell.util.element.get_material(element, should_skip_usage=True)
+            if material:
+                if material.is_a("IfcMaterialLayerSet"):
+                    name = material.LayerSetName or "null"
+                else:
+                    name = getattr(material, "Name", "null") or "null"
+                name = self.canonicalise_class_name(name)
+                classes.append(f"material-{name}")
+            el.set("class", (el.get("class", "") + " " + " ".join(classes)).strip())
+
+    def move_projection_to_bottom(self, root):
+        # https://stackoverflow.com/questions/36018627/sorting-child-elements-with-lxml-based-on-attribute-value
+        group = root.find("{http://www.w3.org/2000/svg}g")
+        # group[:] = sorted(group, key=lambda e : "projection" in e.get("class"))
+        group[:] = reversed(group)
+
+    def canonicalise_class_name(self, name):
+        return re.sub("[^0-9a-zA-Z]+", "", name)
 
     def generate_annotation(self, context):
         if not self.props.has_annotation:
@@ -347,18 +454,6 @@ class CreateDrawing(bpy.types.Operator):
         camera = self.camera
         svg_writer = svgwriter.SvgWriter()
 
-        if camera.data.BIMCameraProperties.diagram_scale == "CUSTOM":
-            human_scale, fraction = camera.data.BIMCameraProperties.custom_diagram_scale.split("|")
-        else:
-            human_scale, fraction = camera.data.BIMCameraProperties.diagram_scale.split("|")
-
-        numerator, denominator = fraction.split("/")
-
-        if camera.data.BIMCameraProperties.is_nts:
-            svg_writer.human_scale = "NTS"
-        else:
-            svg_writer.human_scale = human_scale
-
         drawing_style = context.scene.DocProperties.drawing_styles[
             camera.data.BIMCameraProperties.active_drawing_style_index
         ]
@@ -371,7 +466,8 @@ class CreateDrawing(bpy.types.Operator):
             height = camera.data.ortho_scale
             width = height / render.resolution_y * render.resolution_x
 
-        svg_writer.scale = float(numerator) / float(denominator)
+        svg_writer.human_scale = self.human_scale
+        svg_writer.scale = self.scale
         svg_writer.output = svg_path
         svg_writer.data_dir = context.scene.BIMProperties.data_dir
         svg_writer.vector_style = drawing_style.vector_style
@@ -381,43 +477,55 @@ class CreateDrawing(bpy.types.Operator):
         svg_writer.camera_projection = tuple(camera.matrix_world.to_quaternion() @ Vector((0, 0, -1)))
 
         for obj in camera.users_collection[0].objects:
-            if "IfcGrid" in obj.name:
+            if "IfcAnnotation/" not in obj.name:
+                continue
+            element = tool.Ifc.get_entity(obj)
+            if element.ObjectType == "GRID":
                 svg_writer.annotations.setdefault("grid_objs", []).append(obj)
             elif obj.type == "CAMERA":
                 continue
-
-            if "IfcAnnotation/" not in obj.name:
-                continue
-
-            if "Leader" in obj.name:
-                svg_writer.annotations["leader_obj"] = (obj, obj.data)
-            elif "Stair" in obj.name:
+            elif element.ObjectType == "TEXT_LEADER":
+                svg_writer.annotations.setdefault("leader_objs", []).append(obj)
+            elif element.ObjectType == "STAIR_ARROW":
                 svg_writer.annotations["stair_obj"] = obj
-            elif "Equal" in obj.name:
+            elif element.ObjectType == "EQUAL_DIMENSION":
                 svg_writer.annotations.setdefault("equal_objs", []).append(obj)
-            elif "Dimension" in obj.name:
+            elif element.ObjectType == "DIMENSION":
                 svg_writer.annotations.setdefault("dimension_objs", []).append(obj)
-            elif "Break" in obj.name:
+            elif element.ObjectType == "BREAKLINE":
                 svg_writer.annotations["break_obj"] = obj
-            elif "Hidden" in obj.name:
+            elif element.ObjectType == "HIDDEN_LINE":
                 svg_writer.annotations.setdefault("hidden_objs", []).append((obj, obj.data))
-            elif "Solid" in obj.name:
+            elif element.ObjectType == "SOLID_LINE":
                 svg_writer.annotations.setdefault("solid_objs", []).append((obj, obj.data))
-            elif "Plan Level" in obj.name:
-                svg_writer.annotations["plan_level_obj"] = obj
-            elif "Section Level" in obj.name:
+            elif element.ObjectType == "PLAN_LEVEL":
+                svg_writer.annotations.setdefault("plan_level_objs", []).append(obj)
+            elif element.ObjectType == "SECTION_LEVEL":
                 svg_writer.annotations["section_level_obj"] = obj
-            elif obj.type == "FONT":
+            elif element.ObjectType == "TEXT":
                 svg_writer.annotations.setdefault("text_objs", []).append(obj)
-            else:
+            elif element.ObjectType == "MISC":
                 svg_writer.annotations.setdefault("misc_objs", []).append(obj)
 
         svg_writer.annotations["attributes"] = [a.name for a in drawing_style.attributes]
-        svg_writer.annotations["annotation_objs"] = self.get_annotation(svg_writer)
+        # TODO: This was the old 2D annotation box checking system, prepare to deprecate
+        svg_writer.annotations["annotation_objs"] = []
 
         svg_writer.write("annotation")
         return svg_writer.output
 
+    def get_scale(self):
+        if self.camera.data.BIMCameraProperties.diagram_scale == "CUSTOM":
+            self.human_scale, fraction = self.camera.data.BIMCameraProperties.custom_diagram_scale.split("|")
+        else:
+            self.human_scale, fraction = self.camera.data.BIMCameraProperties.diagram_scale.split("|")
+
+        if self.camera.data.BIMCameraProperties.is_nts:
+            self.human_scale = "NTS"
+
+        numerator, denominator = fraction.split("/")
+        self.scale = float(numerator) / float(denominator)
+
     def is_landscape(self, render):
         return render.resolution_x > render.resolution_y
 
@@ -430,56 +538,6 @@ class CreateDrawing(bpy.types.Operator):
                     continue
                 return space
 
-    def get_annotation(self, svg_writer):
-        results = []
-        x = svg_writer.camera_width / 2
-        y = svg_writer.camera_height / 2
-        z = 0.01
-        camera_box = helper.BoundingBox(
-            self.camera,
-            [
-                self.camera.matrix_world @ Vector((-x, -y, -z)),
-                self.camera.matrix_world @ Vector((-x, -y, 0)),
-                self.camera.matrix_world @ Vector((-x, y, 0)),
-                self.camera.matrix_world @ Vector((-x, y, -z)),
-                self.camera.matrix_world @ Vector((x, -y, -z)),
-                self.camera.matrix_world @ Vector((x, -y, 0)),
-                self.camera.matrix_world @ Vector((x, y, 0)),
-                self.camera.matrix_world @ Vector((x, y, -z)),
-            ],
-        )
-        # This should probably be also part of IfcConvert in the future, here is a Python prototype
-        settings_2d = ifcopenshell.geom.settings()
-        settings_2d.set(settings_2d.INCLUDE_CURVES, True)
-        for obj in bpy.data.objects:
-            if not obj.BIMObjectProperties.ifc_definition_id:
-                continue
-            if obj == self.camera:
-                continue
-            element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
-            if element.is_a("IfcTypeProduct"):
-                continue
-            representation = ifcopenshell.util.representation.get_representation(
-                element, "Plan", "Annotation", self.camera.data.BIMCameraProperties.target_view
-            )
-            if not representation:
-                continue
-            if not camera_box.intersect(helper.BoundingBox(obj)):
-                continue
-            shape = ifcopenshell.geom.create_shape(settings_2d, representation)
-            geometry = shape
-            e = geometry.edges
-            v = geometry.verts
-            results.append(
-                {
-                    "raw": element,
-                    "classes": self.get_classes(element, "annotation", svg_writer),
-                    "edges": [[e[i], e[i + 1]] for i in range(0, len(e), 2)],
-                    "vertices": [obj.matrix_world @ Vector((v[i], v[i + 1], v[i + 2])) for i in range(0, len(v), 3)],
-                }
-            )
-        return results
-
     def get_classes(self, element, position, svg_writer):
         classes = [position, element.is_a()]
         material = ifcopenshell.util.element.get_material(element, should_skip_usage=True)
@@ -506,7 +564,7 @@ class AddAnnotation(bpy.types.Operator):
     bl_idname = "bim.add_annotation"
     bl_label = "Add Annotation"
     bl_options = {"REGISTER", "UNDO"}
-    obj_name: bpy.props.StringProperty()
+    object_type: bpy.props.StringProperty()
     data_type: bpy.props.StringProperty()
 
     @classmethod
@@ -517,33 +575,51 @@ class AddAnnotation(bpy.types.Operator):
         return IfcStore.execute_ifc_operator(self, context)
 
     def _execute(self, context):
+        context.scene.DocProperties.should_draw_decorations = True
         subcontext = ifcopenshell.util.representation.get_context(
             IfcStore.get_file(), "Plan", "Annotation", context.scene.camera.data.BIMCameraProperties.target_view
         )
         if not subcontext:
             return {"FINISHED"}
-        if self.data_type == "text":
-            if context.selected_objects:
-                for selected_object in context.selected_objects:
-                    obj = annotation.Annotator.add_text(context, related_element=selected_object)
-            else:
-                obj = annotation.Annotator.add_text(context)
-        else:
-            obj = annotation.Annotator.get_annotation_obj(self.obj_name, self.data_type, context)
-            if self.obj_name == "Break":
-                obj = annotation.Annotator.add_plane_to_annotation(obj, context)
-            else:
-                obj = annotation.Annotator.add_line_to_annotation(obj, context)
+        # TODO: reimplement bulk smart tagging
+        # if self.data_type == "text":
+        #    if context.selected_objects:
+        #        for selected_object in context.selected_objects:
+        #            obj = annotation.Annotator.add_text(context, related_element=selected_object)
+        #    else:
+        #        obj = annotation.Annotator.add_text(context)
+        # else:
+        obj = annotation.Annotator.get_annotation_obj(self.object_type, self.data_type, context)
+        if self.object_type == "BREAKLINE":
+            obj = annotation.Annotator.add_plane_to_annotation(obj, context)
+        elif self.object_type != "TEXT":
+            obj = annotation.Annotator.add_line_to_annotation(obj, context)
 
         if not obj.BIMObjectProperties.ifc_definition_id:
-            bpy.ops.bim.assign_class(obj=obj.name, ifc_class="IfcAnnotation", context_id=subcontext.id())
+            ifc_representation_class = ""
+            if self.object_type == "TEXT":
+                ifc_representation_class = "IfcTextLiteral"
+            elif self.object_type == "TEXT_LEADER":
+                ifc_representation_class = "IfcGeometricCurveSet/IfcTextLiteral"
+            bpy.ops.bim.assign_class(
+                obj=obj.name,
+                ifc_class="IfcAnnotation",
+                context_id=subcontext.id(),
+                ifc_representation_class=ifc_representation_class,
+            )
+            element = tool.Ifc.get_entity(obj)
+            element.ObjectType = self.object_type
+            camera = tool.Ifc.get_entity(context.scene.camera)
+            group = [r for r in camera.HasAssignments if r.is_a("IfcRelAssignsToGroup")][0].RelatingGroup
+            bpy.ops.bim.assign_group(product=obj.name, group=group.id())
         else:
             bpy.ops.bim.update_representation(obj=obj.name)
 
         bpy.ops.object.select_all(action="DESELECT")
         context.view_layer.objects.active = obj
         obj.select_set(True)
-        bpy.ops.object.mode_set(mode="EDIT")
+        if obj.data:
+            bpy.ops.object.mode_set(mode="EDIT")
         return {"FINISHED"}
 
 
@@ -717,9 +793,8 @@ class ActivateView(bpy.types.Operator):
                 ):
                     project_collection.children["Views"].children[collection.name].hide_viewport = True
                     bpy.data.collections.get(collection.name).hide_render = True
-        context.view_layer.layer_collection.children["Views"].children[
-            camera.users_collection[0].name
-        ].hide_viewport = False
+
+                    project_collection.children["Views"].children[camera.users_collection[0].name].hide_viewport = False
         bpy.data.collections.get(camera.users_collection[0].name).hide_render = False
         bpy.ops.bim.activate_drawing_style()
         return {"FINISHED"}
@@ -787,12 +862,6 @@ class GenerateReferences(bpy.types.Operator):
         level_obj = annotation.Annotator.get_annotation_obj("Section Level", "curve", context)
 
         width_in_mm = width * 1000
-        if self.camera.data.BIMCameraProperties.diagram_scale == "CUSTOM":
-            human_scale, fraction = self.camera.data.BIMCameraProperties.custom_diagram_scale.split("|")
-        else:
-            human_scale, fraction = self.camera.data.BIMCameraProperties.diagram_scale.split("|")
-        numerator, denominator = fraction.split("/")
-        scale = float(numerator) / float(denominator)
         real_world_width_in_mm = width_in_mm * scale
         offset_in_mm = 20
         offset_percentage = offset_in_mm / real_world_width_in_mm
@@ -844,29 +913,6 @@ class RemoveVariable(bpy.types.Operator):
         return {"FINISHED"}
 
 
-class PropagateTextData(bpy.types.Operator):
-    bl_idname = "bim.propagate_text_data"
-    bl_label = "Propagate Text Data"
-    bl_options = {"REGISTER", "UNDO"}
-
-    def execute(self, context):
-        source = context.active_object
-        for obj in context.selected_objects:
-            if obj == source:
-                continue
-            obj.data.body = source.data.body
-            obj.data.align_x = source.data.align_x
-            obj.data.align_y = source.data.align_y
-            obj.data.BIMTextProperties.font_size = source.data.BIMTextProperties.font_size
-            obj.data.BIMTextProperties.symbol = source.data.BIMTextProperties.symbol
-            obj.data.BIMTextProperties.variables.clear()
-            for variable in source.data.BIMTextProperties.variables:
-                new_variable = obj.data.BIMTextProperties.variables.add()
-                new_variable.name = variable.name
-                new_variable.prop_key = variable.prop_key
-        return {"FINISHED"}
-
-
 class RemoveDrawing(bpy.types.Operator):
     bl_idname = "bim.remove_drawing"
     bl_label = "Remove Drawing"
@@ -1186,6 +1232,12 @@ class CopyGrid(bpy.types.Operator):
         return helper.get_active_drawing(context.scene)[0] is not None
 
     def execute(self, context):
+        subcontext = ifcopenshell.util.representation.get_context(
+            IfcStore.get_file(), "Plan", "Annotation", context.scene.camera.data.BIMCameraProperties.target_view
+        )
+        if not subcontext:
+            return {"FINISHED"}
+
         proj_coll = helper.get_project_collection(context.scene)
         view_coll, camera = helper.get_active_drawing(context.scene)
         is_ortho = camera.data.type == "ORTHO"
@@ -1194,11 +1246,19 @@ class CopyGrid(bpy.types.Operator):
         elevating = is_ortho and camera.data.BIMCameraProperties.target_view in ("ELEVATION_VIEW", "SECTION_VIEW")
 
         def grep(coll):
-            return [obj for obj in coll.all_objects if obj.name.startswith("IfcGridAxis")]
+            results = []
+            for obj in coll.all_objects:
+                element = tool.Ifc.get_entity(obj)
+                if element and element.is_a("IfcAnnotation") and element.ObjectType == "GRID":
+                    results.append(obj)
+            return results
 
         def clone(src):
             dst = src.copy()
             dst.data = dst.data.copy()
+            dst.name = dst.name.replace("IfcGridAxis/", "")
+            dst.BIMObjectProperties.ifc_definition_id = 0
+            dst.data.BIMMeshProperties.ifc_definition_id = 0
             return dst
 
         def disassemble(obj):
@@ -1245,17 +1305,25 @@ class CopyGrid(bpy.types.Operator):
         for obj in grep(view_coll):
             view_coll.objects.unlink(obj)
 
-        grid = [localize(*disassemble(clone(obj))) for obj in grep(proj_coll)]
+        grids = []
+        for element in tool.Ifc.get().by_type("IfcGridAxis"):
+            obj = tool.Ifc.get_object(element)
+            if not obj:
+                continue
+            grids.append((*localize(*disassemble(clone(obj))), element))
 
         if clipping:
-            grid = [(obj, clip(mesh)) for obj, mesh in grid]
+            grids = [(obj, clip(mesh), element) for obj, mesh, element in grids]
         elif elevating:
-            grid = [(obj, elev(mesh)) for obj, mesh in grid]
+            grids = [(obj, elev(mesh), element) for obj, mesh, element in grids]
 
-        for obj, mesh in grid:
+        for obj, mesh, element in grids:
             if mesh is not None:
                 view_coll.objects.link(assemble(obj, mesh))
-
+                bpy.ops.bim.assign_class(obj=obj.name, ifc_class="IfcAnnotation", context_id=subcontext.id())
+                annotation = tool.Ifc.get_entity(obj)
+                annotation.Name = element.AxisTag
+                annotation.ObjectType = "GRID"
         return {"FINISHED"}
 
 
@@ -1314,3 +1382,30 @@ class AddSectionsAnnotations(bpy.types.Operator):
             view_coll.objects.link(obj)
 
         return {"FINISHED"}
+
+
+class EditText(bpy.types.Operator, Operator):
+    bl_idname = "bim.edit_text"
+    bl_label = "Edit Text"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.edit_text(tool.Ifc, tool.Drawing, obj=context.active_object)
+
+
+class EnableEditingText(bpy.types.Operator, Operator):
+    bl_idname = "bim.enable_editing_text"
+    bl_label = "Enable Editing Text"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.enable_editing_text(tool.Drawing, obj=context.active_object)
+
+
+class DisableEditingText(bpy.types.Operator, Operator):
+    bl_idname = "bim.disable_editing_text"
+    bl_label = "Disable Editing Text"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.disable_editing_text(tool.Drawing, obj=context.active_object)

src/blenderbim/blenderbim/bim/module/drawing/prop.py

@@ -18,6 +18,9 @@
 
 import os
 import bpy
+import json
+import ifcopenshell
+import blenderbim.tool as tool
 import blenderbim.bim.module.drawing.annotation as annotation
 import blenderbim.bim.module.drawing.decoration as decoration
 import enum
@@ -53,6 +56,22 @@ def purge():
     vector_styles_enum = []
 
 
+def update_diagram_scale(self, context):
+    scale = self.diagram_scale
+    if scale == "CUSTOM":
+        scale = self.custom_diagram_scale
+    scale = scale.split("|")[1]
+    element = tool.Ifc.get_entity(context.scene.camera)
+    if not element:
+        return
+    pset = ifcopenshell.util.element.get_psets(element).get("EPset_Drawing")
+    if pset:
+        pset = tool.Ifc.get().by_id(pset["id"])
+    else:
+        pset = ifcopenshell.api.run("pset.add_pset", tool.Ifc.get(), product=element, name="EPset_Drawing")
+    ifcopenshell.api.run("pset.edit_pset", tool.Ifc.get(), pset=pset, properties={"Scale": scale})
+
+
 def get_diagram_scales(self, context):
     global diagram_scales_enum
     if (
@@ -150,6 +169,10 @@ def refreshTitleblocks(self, context):
 def toggleDecorations(self, context):
     toggle = self.should_draw_decorations
     if toggle:
+        # TODO: design a proper text variable templating renderer
+        collection = context.scene.camera.users_collection[0]
+        for obj in collection.objects:
+            tool.Drawing.update_text_value(obj)
         decoration.DecorationsHandler.install(context)
     else:
         decoration.DecorationsHandler.uninstall()
@@ -265,7 +288,7 @@ class DocProperties(PropertyGroup):
     drawing_styles: CollectionProperty(name="Drawing Styles", type=DrawingStyle)
     should_draw_decorations: BoolProperty(name="Should Draw Decorations", update=toggleDecorations)
     decorations_colour: FloatVectorProperty(
-        name="Decorations Colour", subtype="COLOR", default=(1, 0, 0, 1), min=0.0, max=1.0, size=4
+        name="Decorations Colour", subtype="COLOR", default=(1, 1, 1, 1), min=0.0, max=1.0, size=4
     )
 
     @property
@@ -282,6 +305,7 @@ class DocProperties(PropertyGroup):
 
 
 class BIMCameraProperties(PropertyGroup):
+    representation: StringProperty(name="Representation")
     view_name: StringProperty(name="View Name")
     target_view: EnumProperty(
         items=[
@@ -294,8 +318,8 @@ class BIMCameraProperties(PropertyGroup):
         name="Target View",
         default="PLAN_VIEW",
     )
-    diagram_scale: EnumProperty(items=get_diagram_scales, name="Drawing Scale")
-    custom_diagram_scale: StringProperty(name="Custom Scale")
+    diagram_scale: EnumProperty(items=get_diagram_scales, name="Drawing Scale", update=update_diagram_scale)
+    custom_diagram_scale: StringProperty(name="Custom Scale", update=update_diagram_scale)
     raster_x: IntProperty(name="Raster X", default=1000)
     raster_y: IntProperty(name="Raster Y", default=1000)
     is_nts: BoolProperty(name="Is NTS")
@@ -314,8 +338,28 @@ class BIMCameraProperties(PropertyGroup):
     cut_objects_custom: StringProperty(name="Custom Cut")
     active_drawing_style_index: IntProperty(name="Active Drawing Style Index")
 
+    # For now, this JSON dump are all the parameters that determine a camera's "Block representation"
+    # By checking this, you will know whether or not the camera IFC representation needs to be refreshed
+    def update_representation(self, obj):
+        representation = json.dumps(
+            {
+                "matrix": [list(x) for x in obj.matrix_world],
+                "raster_x": self.raster_x,
+                "raster_y": self.raster_y,
+                "ortho_scale": obj.data.ortho_scale,
+                "clip_end": obj.data.clip_end,
+            }
+        )
+        if self.representation != representation:
+            self.representation = representation
+            return True
+        return False
+
 
 class BIMTextProperties(PropertyGroup):
+    is_editing: BoolProperty(name="Is Editing", default=False)
+    attributes: CollectionProperty(name="Attributes", type=Attribute)
+    value: StringProperty(name="Value", default="TEXT")
     font_size: EnumProperty(
         items=[
             ("1.8", "1.8 - Small", ""),
@@ -324,6 +368,7 @@ class BIMTextProperties(PropertyGroup):
             ("5.0", "5.0 - Header", ""),
             ("7.0", "7.0 - Title", ""),
         ],
+        default="2.5",
         update=refreshFontSize,
         name="Font Size",
     )

src/blenderbim/blenderbim/bim/module/drawing/svgwriter.py

@@ -24,6 +24,8 @@ import pystache
 import xml.etree.ElementTree as ET
 import svgwrite
 import ifcopenshell
+import ifcopenshell.util.representation
+import blenderbim.tool as tool
 import blenderbim.bim.module.drawing.helper as helper
 import blenderbim.bim.module.drawing.annotation as annotation
 from mathutils import Vector
@@ -168,7 +170,7 @@ class SvgWriter:
                 line["marker-start"] = "url(#grid-marker)"
                 line["marker-end"] = "url(#grid-marker)"
                 line["stroke-dasharray"] = "12.5, 3, 3, 3"
-                axis_tag = IfcStore.get_file().by_id(grid_obj.BIMObjectProperties.ifc_definition_id).AxisTag
+                axis_tag = tool.Ifc.get_entity(grid_obj).Name
                 self.svg.add(
                     self.svg.text(
                         axis_tag,
@@ -207,53 +209,10 @@ class SvgWriter:
         for obj_data in self.annotations.get("solid_objs", []):
             self.draw_line_annotation(obj_data, ["solid"])
 
-        if self.annotations.get("leader_obj"):
-            self.draw_line_annotation(self.annotations["leader_obj"], ["leader"])
+        self.draw_leader_annotations()
 
-        if self.annotations.get("plan_level_obj"):
-            matrix_world = self.annotations["plan_level_obj"].matrix_world
-            for spline in self.annotations["plan_level_obj"].data.splines:
-                classes = ["annotation", "plan-level"]
-                points = self.get_spline_points(spline)
-                projected_points = [self.project_point_onto_camera(matrix_world @ p.co.xyz) for p in points]
-                d = " ".join(
-                    [
-                        "L {} {}".format((x_offset + p.x) * self.scale, (y_offset - p.y) * self.scale)
-                        for p in projected_points
-                    ]
-                )
-                d = "M{}".format(d[1:])
-                path = self.svg.add(self.svg.path(d=d, class_=" ".join(classes)))
-                path["marker-end"] = "url(#plan-level-marker)"
-                text_position = Vector(
-                    (
-                        (x_offset + projected_points[0].x) * self.scale,
-                        ((y_offset - projected_points[0].y) * self.scale) - 2.5,
-                    )
-                )
-                # TODO: allow metric to be configurable
-                rl = ((matrix_world @ points[0].co).xyz + self.annotations["plan_level_obj"].location).z
-                if bpy.context.scene.unit_settings.system == "IMPERIAL":
-                    rl = helper.format_distance(rl)
-                else:
-                    rl = "{:.3f}m".format(rl)
-                if projected_points[0].x > projected_points[-1].x:
-                    text_anchor = "end"
-                else:
-                    text_anchor = "start"
-                self.svg.add(
-                    self.svg.text(
-                        "RL +{}".format(rl),
-                        insert=tuple(text_position),
-                        **{
-                            "font-size": annotation.Annotator.get_svg_text_size(2.5),
-                            "font-family": "OpenGost Type B TT",
-                            "text-anchor": text_anchor,
-                            "alignment-baseline": "baseline",
-                            "dominant-baseline": "baseline",
-                        },
-                    )
-                )
+        for obj in self.annotations.get("plan_level_objs", []):
+            self.draw_plan_level_annotation(obj)
 
         if self.annotations.get("section_level_obj"):
             matrix_world = self.annotations["section_level_obj"].matrix_world
@@ -455,72 +414,99 @@ class SvgWriter:
                 self.svg.line(start=tuple(start * self.scale), end=tuple(end * self.scale), class_=" ".join(classes))
             )
 
+    def draw_leader_annotations(self):
+        for obj in self.annotations.get("leader_objs", []):
+            self.draw_line_annotation((obj, obj.data), ["leader"])
+            spline = obj.data.splines[0]
+            spline_points = spline.bezier_points if spline.bezier_points else spline.points
+            if spline_points:
+                position = obj.matrix_world @ spline_points[0].co.xyz
+            else:
+                position = Vector((0, 0, 0))
+            self.draw_text_annotation(obj, position)
+
     def draw_text_annotations(self):
+        for text_obj in self.annotations.get("text_objs", []):
+            self.draw_text_annotation(text_obj, text_obj.location)
+
+    def draw_text_annotation(self, text_obj, position):
         x_offset = self.raw_width / 2
         y_offset = self.raw_height / 2
+        element = tool.Ifc.get_entity(text_obj)
+        rep = ifcopenshell.util.representation.get_representation(element, "Plan", "Annotation")
+        text_literal = [i for i in rep.Items if i.is_a("IfcTextLiteral")][0]
 
-        for text_obj in self.annotations.get("text_objs", []):
-            text_position = self.project_point_onto_camera(text_obj.location)
-            text_position = Vector(((x_offset + text_position.x), (y_offset - text_position.y)))
+        text_position = self.project_point_onto_camera(position)
+        text_position = Vector(((x_offset + text_position.x), (y_offset - text_position.y)))
 
-            local_x_axis = text_obj.matrix_world.to_quaternion() @ Vector((1, 0, 0))
-            projected_x_axis = self.project_point_onto_camera(text_obj.location + local_x_axis)
-            angle = math.degrees(
-                (Vector((x_offset + projected_x_axis.x, y_offset - projected_x_axis.y)) - text_position).angle_signed(
-                    Vector((1, 0))
-                )
+        local_x_axis = text_obj.matrix_world.to_quaternion() @ Vector((1, 0, 0))
+        projected_x_axis = self.project_point_onto_camera(position + local_x_axis)
+        angle = math.degrees(
+            (Vector((x_offset + projected_x_axis.x, y_offset - projected_x_axis.y)) - text_position).angle_signed(
+                Vector((1, 0))
+            )
+        )
+
+        transform = "rotate({}, {}, {})".format(
+            angle,
+            (text_position * self.scale)[0],
+            (text_position * self.scale)[1],
+        )
+
+        if text_obj.BIMTextProperties.symbol != "None":
+            self.svg.add(
+                self.svg.use("#{}".format(text_obj.BIMTextProperties.symbol), insert=tuple(text_position * self.scale))
             )
 
-            transform = "rotate({}, {}, {})".format(
-                angle,
-                (text_position * self.scale)[0],
-                (text_position * self.scale)[1],
+        if text_literal.BoxAlignment == "top-left":
+            alignment_baseline = "hanging"
+            text_anchor = "start"
+        elif text_literal.BoxAlignment == "top-middle":
+            alignment_baseline = "hanging"
+            text_anchor = "middle"
+        elif text_literal.BoxAlignment == "top-right":
+            alignment_baseline = "hanging"
+            text_anchor = "end"
+        elif text_literal.BoxAlignment == "middle-left":
+            alignment_baseline = "middle"
+            text_anchor = "start"
+        elif text_literal.BoxAlignment == "center":
+            alignment_baseline = "middle"
+            text_anchor = "middle"
+        elif text_literal.BoxAlignment == "middle-right":
+            alignment_baseline = "middle"
+            text_anchor = "end"
+        elif text_literal.BoxAlignment == "bottom-left":
+            alignment_baseline = "baseline"
+            text_anchor = "start"
+        elif text_literal.BoxAlignment == "bottom-middle":
+            alignment_baseline = "baseline"
+            text_anchor = "middle"
+        elif text_literal.BoxAlignment == "bottom-right":
+            alignment_baseline = "baseline"
+            text_anchor = "end"
+
+        text_body = text_literal.Literal
+        if text_obj.name in self.annotations.get("template_variables", {}):
+            text_body = pystache.render(text_body, self.annotations["template_variables"][text_obj.name])
+
+        for line_number, text_line in enumerate(text_body.split("\n")):
+            self.svg.add(
+                self.svg.text(
+                    text_line,
+                    insert=tuple((text_position * self.scale) + Vector((0, 3.5 * line_number))),
+                    class_=" ".join(self.get_attribute_classes(text_obj)),
+                    **{
+                        "font-size": annotation.Annotator.get_svg_text_size(text_obj.BIMTextProperties.font_size),
+                        "font-family": "OpenGost Type B TT",
+                        "text-anchor": text_anchor,
+                        "alignment-baseline": alignment_baseline,
+                        "dominant-baseline": alignment_baseline,
+                        "transform": transform,
+                    },
+                )
             )
 
-            if text_obj.data.BIMTextProperties.symbol != "None":
-                self.svg.add(
-                    self.svg.use(
-                        "#{}".format(text_obj.data.BIMTextProperties.symbol), insert=tuple(text_position * self.scale)
-                    )
-                )
-
-            if text_obj.data.align_x == "CENTER":
-                text_anchor = "middle"
-            elif text_obj.data.align_x == "RIGHT":
-                text_anchor = "end"
-            else:
-                text_anchor = "start"
-
-            if text_obj.data.align_y == "CENTER":
-                alignment_baseline = "middle"
-            elif text_obj.data.align_y == "TOP":
-                alignment_baseline = "hanging"
-            else:
-                alignment_baseline = "baseline"
-
-            text_body = text_obj.data.body
-            if text_obj.name in self.annotations.get("template_variables", {}):
-                text_body = pystache.render(text_body, self.annotations["template_variables"][text_obj.name])
-
-            for line_number, text_line in enumerate(text_body.split("\n")):
-                self.svg.add(
-                    self.svg.text(
-                        text_line,
-                        insert=tuple((text_position * self.scale) + Vector((0, 3.5 * line_number))),
-                        class_=" ".join(self.get_attribute_classes(text_obj)),
-                        **{
-                            "font-size": annotation.Annotator.get_svg_text_size(
-                                text_obj.data.BIMTextProperties.font_size
-                            ),
-                            "font-family": "OpenGost Type B TT",
-                            "text-anchor": text_anchor,
-                            "alignment-baseline": alignment_baseline,
-                            "dominant-baseline": alignment_baseline,
-                            "transform": transform,
-                        },
-                    )
-                )
-
     def draw_break_annotations(self, break_obj):
         x_offset = self.raw_width / 2
         y_offset = self.raw_height / 2
@@ -549,6 +535,54 @@ class SvgWriter:
             d = "M{}".format(d[1:])
             path = self.svg.add(self.svg.path(d=d, class_=" ".join(["breakline"])))
 
+    def draw_plan_level_annotation(self, obj):
+        x_offset = self.raw_width / 2
+        y_offset = self.raw_height / 2
+        matrix_world = obj.matrix_world
+        for spline in obj.data.splines:
+            classes = ["annotation", "plan-level"]
+            points = self.get_spline_points(spline)
+            projected_points = [self.project_point_onto_camera(matrix_world @ p.co.xyz) for p in points]
+            d = " ".join(
+                [
+                    "L {} {}".format((x_offset + p.x) * self.scale, (y_offset - p.y) * self.scale)
+                    for p in projected_points
+                ]
+            )
+            d = "M{}".format(d[1:])
+            path = self.svg.add(self.svg.path(d=d, class_=" ".join(classes)))
+            path["marker-end"] = "url(#plan-level-marker)"
+            text_position = Vector(
+                (
+                    (x_offset + projected_points[0].x) * self.scale,
+                    ((y_offset - projected_points[0].y) * self.scale) - 2.5,
+                )
+            )
+            # TODO: allow metric to be configurable
+            rl = ((matrix_world @ points[0].co).xyz + obj.location).z
+            if bpy.context.scene.unit_settings.system == "IMPERIAL":
+                rl = helper.format_distance(rl)
+            else:
+                rl = "{:.3f}m".format(rl)
+            if projected_points[0].x > projected_points[-1].x:
+                text_anchor = "end"
+            else:
+                text_anchor = "start"
+            self.svg.add(
+                self.svg.text(
+                    "RL +{}".format(rl),
+                    insert=tuple(text_position),
+                    **{
+                        "font-size": annotation.Annotator.get_svg_text_size(2.5),
+                        "font-family": "OpenGost Type B TT",
+                        "text-anchor": text_anchor,
+                        "alignment-baseline": "baseline",
+                        "dominant-baseline": "baseline",
+                    },
+                )
+            )
+
+
     def draw_dimension_annotations(self, dimension_obj, text_override=None):
         matrix_world = dimension_obj.matrix_world
         for spline in dimension_obj.data.splines:

src/blenderbim/blenderbim/bim/module/drawing/ui.py

@@ -17,7 +17,10 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
+import blenderbim.bim.helper
+import blenderbim.tool as tool
 from bpy.types import Panel
+from blenderbim.bim.module.drawing.data import TextData
 
 
 class BIM_PT_camera(Panel):
@@ -233,45 +236,63 @@ class BIM_PT_sheets(Panel):
 
 
 class BIM_PT_text(Panel):
-    bl_label = "Text Paper Space"
+    bl_label = "IFC Text"
     bl_idname = "BIM_PT_text"
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
-    bl_context = "data"
+    bl_context = "object"
 
     @classmethod
     def poll(cls, context):
-        return type(context.curve) is bpy.types.TextCurve
+        if not tool.Ifc.get() or not context.active_object:
+            return
+        element = tool.Ifc.get_entity(context.active_object)
+        if not element:
+            return
+        return element.is_a("IfcAnnotation") and element.ObjectType in ["TEXT", "TEXT_LEADER"]
 
     def draw(self, context):
-        layout = self.layout
-        layout.use_property_split = True
-        props = context.active_object.data.BIMTextProperties
+        if not TextData.is_loaded:
+            TextData.load()
 
-        row = layout.row()
-        row.operator("bim.propagate_text_data")
+        self.layout.use_property_split = True
+        props = context.active_object.BIMTextProperties
 
-        row = layout.row()
+        if props.is_editing:
+            row = self.layout.row(align=True)
+            row.operator("bim.edit_text", icon="CHECKMARK")
+            row.operator("bim.disable_editing_text", icon="CANCEL", text="")
+            blenderbim.bim.helper.draw_attributes(props.attributes, self.layout)
+        else:
+            row = self.layout.row()
+            row.operator("bim.enable_editing_text", icon="GREASEPENCIL")
+
+            for attribute in TextData.data["attributes"]:
+                row = self.layout.row(align=True)
+                row.label(text=attribute["name"])
+                row.label(text=attribute["value"])
+
+        row = self.layout.row()
         row.prop(props, "font_size")
-        row = layout.row()
+        row = self.layout.row()
         row.prop(props, "symbol")
-        row = layout.row()
+        row = self.layout.row()
         row.prop(props, "related_element")
 
-        row = layout.row()
+        row = self.layout.row()
         row.operator("bim.add_variable")
 
         for index, variable in enumerate(props.variables):
-            row = layout.row(align=True)
+            row = self.layout.row(align=True)
             row.prop(variable, "name")
             row.operator("bim.remove_variable", icon="X", text="").index = index
-            row = layout.row()
+            row = self.layout.row()
             row.prop(variable, "prop_key")
 
 
 class BIM_PT_annotation_utilities(Panel):
     bl_idname = "BIM_PT_annotation_utilities"
-    bl_label = "Annotation"
+    bl_label = "Drawing"
     bl_options = {"DEFAULT_CLOSED"}
     bl_space_type = "VIEW_3D"
     bl_region_type = "UI"
@@ -289,41 +310,42 @@ class BIM_PT_annotation_utilities(Panel):
 
         row = layout.row(align=True)
         op = row.operator("bim.add_annotation", text="Dim", icon="ARROW_LEFTRIGHT")
-        op.obj_name = "Dimension"
+        op.object_type = "DIMENSION"
         op.data_type = "curve"
         op = row.operator("bim.add_annotation", text="Dim (Eq)", icon="ARROW_LEFTRIGHT")
-        op.obj_name = "Equal"
+        op.object_type = "EQUAL_DIMENSION"
         op.data_type = "curve"
 
         row = layout.row(align=True)
         op = row.operator("bim.add_annotation", text="Text", icon="SMALL_CAPS")
-        op.data_type = "text"
+        op.object_type = "TEXT"
+        op.data_type = "empty"
         op = row.operator("bim.add_annotation", text="Leader", icon="TRACKING_BACKWARDS")
-        op.obj_name = "Leader"
+        op.object_type = "TEXT_LEADER"
         op.data_type = "curve"
 
         row = layout.row(align=True)
         op = row.operator("bim.add_annotation", text="Stair Arrow", icon="SCREEN_BACK")
-        op.obj_name = "Stair"
+        op.object_type = "STAIR_ARROW"
         op.data_type = "curve"
         op = row.operator("bim.add_annotation", text="Hidden", icon="CON_TRACKTO")
-        op.obj_name = "Hidden"
+        op.object_type = "HIDDEN_LINE"
         op.data_type = "mesh"
 
         row = layout.row(align=True)
         op = row.operator("bim.add_annotation", text="Level (Plan)", icon="SORTBYEXT")
-        op.obj_name = "Plan Level"
+        op.object_type = "PLAN_LEVEL"
         op.data_type = "curve"
         op = row.operator("bim.add_annotation", text="Level (Section)", icon="TRIA_DOWN")
-        op.obj_name = "Section Level"
+        op.object_type = "SECTION_LEVEL"
         op.data_type = "curve"
 
         row = layout.row(align=True)
         op = row.operator("bim.add_annotation", text="Breakline", icon="FCURVE")
-        op.obj_name = "Break"
+        op.object_type = "BREAKLINE"
         op.data_type = "mesh"
         op = row.operator("bim.add_annotation", text="Misc", icon="MESH_MONKEY")
-        op.obj_name = "Misc"
+        op.object_type = "MISC"
         op.data_type = "mesh"
 
         props = context.scene.DocProperties

src/blenderbim/blenderbim/bim/module/geometry/__init__.py

@@ -20,13 +20,19 @@ import bpy
 from . import ui, prop, operator
 
 classes = (
-    operator.EditObjectPlacement,
     operator.AddRepresentation,
-    operator.SwitchRepresentation,
-    operator.RemoveRepresentation,
-    operator.UpdateRepresentation,
-    operator.UpdateParametricRepresentation,
+    operator.CopyRepresentation,
+    operator.EditObjectPlacement,
     operator.GetRepresentationIfcParameters,
+    operator.OverrideDelete,
+    operator.OverrideOutlinerDelete,
+    operator.OverrideDuplicateMove,
+    operator.OverrideDuplicateMoveLinked,
+    operator.OverridePasteBuffer,
+    operator.RemoveRepresentation,
+    operator.SwitchRepresentation,
+    operator.UpdateParametricRepresentation,
+    operator.UpdateRepresentation,
     prop.BIMGeometryProperties,
     ui.BIM_PT_derived_placements,
     ui.BIM_PT_representations,
@@ -35,11 +41,30 @@ classes = (
 )
 
 
+addon_keymaps = []
+
+
 def register():
     bpy.types.Scene.BIMGeometryProperties = bpy.props.PointerProperty(type=prop.BIMGeometryProperties)
     bpy.types.OBJECT_PT_transform.append(ui.BIM_PT_transform)
+    wm = bpy.context.window_manager
+    if wm.keyconfigs.addon:
+        km = wm.keyconfigs.addon.keymaps.new(name="3D View", space_type="VIEW_3D")
+        kmi = km.keymap_items.new("bim.override_paste_buffer", "V", "PRESS", ctrl=True)
+        kmi.properties["name"] = "bim.override_paste_buffer"
+        addon_keymaps.append((km, kmi))
+        km = wm.keyconfigs.addon.keymaps.new(name="Outliner", space_type="OUTLINER")
+        kmi = km.keymap_items.new("bim.override_paste_buffer", "V", "PRESS", ctrl=True)
+        kmi.properties["name"] = "bim.override_paste_buffer"
+        addon_keymaps.append((km, kmi))
 
 
 def unregister():
     bpy.types.OBJECT_PT_transform.remove(ui.BIM_PT_transform)
     del bpy.types.Scene.BIMGeometryProperties
+    wm = bpy.context.window_manager
+    kc = wm.keyconfigs.addon
+    if kc:
+        for km, kmi in addon_keymaps:
+            km.keymap_items.remove(kmi)
+    addon_keymaps.clear()

src/blenderbim/blenderbim/bim/module/geometry/data.py

@@ -0,0 +1,140 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import blenderbim.tool as tool
+import ifcopenshell.util.placement
+from mathutils import Vector
+
+
+def refresh():
+    DerivedPlacementsData.is_loaded = False
+    RepresentationsData.is_loaded = False
+
+
+class RepresentationsData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.data = {"representations": cls.representations()}
+        cls.is_loaded = True
+
+    @classmethod
+    def representations(cls):
+        results = []
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        representations = []
+        if element.is_a("IfcProduct") and element.Representation:
+            representations = element.Representation.Representations
+        elif element.is_a("IfcTypeProduct"):
+            representations = [rm.MappedRepresentation for rm in element.RepresentationMaps or []]
+        for representation in representations:
+            representation_type = representation.RepresentationType
+            if representation_type == "MappedRepresentation":
+                representation_type = representation.Items[0].MappingSource.MappedRepresentation.RepresentationType
+                representation_type += "*"
+            data = {
+                "id": representation.id(),
+                "ContextType": representation.ContextOfItems.ContextType or "",
+                "ContextIdentifier": "",
+                "TargetView": "",
+                "RepresentationType": representation_type or "",
+            }
+            if representation.ContextOfItems.is_a("IfcGeometricRepresentationSubContext"):
+                data["ContextIdentifier"] = representation.ContextOfItems.ContextIdentifier or ""
+                data["TargetView"] = representation.ContextOfItems.TargetView or ""
+            results.append(data)
+        return results
+
+
+class DerivedPlacementsData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.load_z_values()
+        cls.load_collection()
+        cls.data = {
+            "is_storey": cls.is_storey(),
+            "storey_height": cls.storey_height(),
+            "min_global_z": cls.min_global_z(),
+            "max_global_z": cls.max_global_z(),
+            "has_collection": cls.has_collection(),
+            "min_decomposed_z": cls.min_decomposed_z(),
+            "max_decomposed_z": cls.max_decomposed_z(),
+        }
+        cls.is_loaded = True
+
+    @classmethod
+    def load_z_values(cls):
+        cls.z_values = [
+            (bpy.context.active_object.matrix_world @ Vector(co))[2] for co in bpy.context.active_object.bound_box
+        ]
+
+    @classmethod
+    def load_collection(cls):
+        cls.collection = bpy.data.objects.get(bpy.context.active_object.users_collection[0].name)
+        cls.collection_z = 0
+        if cls.collection:
+            cls.collection_z = cls.collection.matrix_world.translation.z
+
+    @classmethod
+    def has_collection(cls):
+        return bool(cls.collection)
+
+    @classmethod
+    def min_global_z(cls):
+        return "{0:.3f}".format(round(min(cls.z_values), 3))
+
+    @classmethod
+    def max_global_z(cls):
+        return "{0:.3f}".format(round(max(cls.z_values), 3))
+
+    @classmethod
+    def min_decomposed_z(cls):
+        return "{0:.3f}".format(round(min(cls.z_values) - cls.collection_z, 3))
+
+    @classmethod
+    def max_decomposed_z(cls):
+        return "{0:.3f}".format(round(max(cls.z_values) - cls.collection_z, 3))
+
+    @classmethod
+    def is_storey(cls):
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        if element:
+            return element.is_a("IfcBuildingStorey")
+
+    @classmethod
+    def storey_height(cls):
+        if not cls.is_storey():
+            return
+        element = tool.Ifc.get_entity(bpy.context.active_object)
+        storeys = [
+            (s, ifcopenshell.util.placement.get_local_placement(s.ObjectPlacement)[2][3])
+            for s in tool.Ifc.get().by_type("IfcBuildingStorey")
+        ]
+        storeys = sorted(storeys, key=lambda s: s[1])
+        for i, storey in enumerate(storeys):
+            if storey[0] != element:
+                continue
+            if i >= len(storeys):
+                return "N/A"
+            return "{0:.3f}".format(round(storeys[i + 1][1] - storey[1], 3))

src/blenderbim/blenderbim/bim/module/geometry/helper.py

@@ -22,7 +22,7 @@ import mathutils
 import ifcopenshell
 import ifcopenshell.util.unit
 from math import pi
-from mathutils import Vector, Matrix
+from mathutils import Vector, Matrix, geometry
 
 
 class Helper:
@@ -215,6 +215,95 @@ class Helper:
 
         return {"profile": outer_loop, "inner_curves": inner_loops, "extrusion": extrusion}
 
+    # An arbitrary face with voids is similar to a profile with voids for extrusion.
+    # Before we begin we check that all faces are coplanar instead of finding suitable face.
+    # Then we process the same way.
+    # Only 2 parameters are returned as there is no extrusion.
+    def auto_detect_curve_bounded_plane(self, mesh, tolerance=0.001):
+        bm = bmesh.new()
+        bm.from_mesh(mesh)
+        bmesh.ops.dissolve_limit(bm, angle_limit=pi / 180 * 1, verts=bm.verts, edges=bm.edges)
+
+        bm.faces.ensure_lookup_table()
+        faces = bm.faces
+        normal = faces[0].normal
+        point = faces[0].verts[0].co
+        for face in faces:
+            pt_f = face.verts[0].co
+            if (
+                normal.dot(face.normal) < 1 - tolerance
+                or abs(geometry.distance_point_to_plane(pt_f, point, normal)) > tolerance
+            ):
+                raise ValueError("All faces must be coplanar and have same orientation")
+
+        loop_edges = set()
+        for face in faces:
+            potential_edges = set(face.edges)
+            for face2 in faces:
+                if face == face2:
+                    continue
+                potential_edges -= set(face2.edges)
+            loop_edges |= potential_edges
+
+        # Create loops from edges
+        loops = []
+        while loop_edges:
+            edge = loop_edges.pop()
+            loop = [edge]
+            has_found_connected_edge = True
+            while has_found_connected_edge:
+                has_found_connected_edge = False
+                for edge in loop_edges.copy():
+                    edge_verts = set(edge.verts)
+                    if edge_verts & set(loop[0].verts):
+                        loop.insert(0, edge)
+                        loop_edges.remove(edge)
+                        has_found_connected_edge = True
+                    elif edge_verts & set(loop[-1].verts):
+                        loop.append(edge)
+                        loop_edges.remove(edge)
+                        has_found_connected_edge = True
+            loops.append(loop)
+
+        # Determine outer loop
+        max_area = 0
+        outer_loop = None
+        inner_loops = []
+
+        for loop in loops:
+            loop_vertices = []
+            total_edges = len(loop)
+            for i, edge in enumerate(loop):
+                if i + 1 == total_edges and edge.verts[0] in loop[i - 1].verts:
+                    loop_vertices.append(edge.verts[0])
+                elif i + 1 == total_edges and edge.verts[1] in loop[i - 1].verts:
+                    loop_vertices.append(edge.verts[1])
+                elif edge.verts[0] in loop[i + 1].verts:
+                    loop_vertices.append(edge.verts[1])
+                elif edge.verts[1] in loop[i + 1].verts:
+                    loop_vertices.append(edge.verts[0])
+
+            loop_bm = bmesh.new()
+            for vert in loop_vertices:
+                loop_bm.verts.new(vert.co)
+            face = loop_bm.faces.new(loop_bm.verts)
+
+            loop_vertex_indices = [v.index for v in loop_vertices]
+            face_area = face.calc_area()
+            if face_area > max_area:
+                max_area = face_area
+                outer_loop = loop_vertex_indices
+            inner_loops.append(loop_vertex_indices)
+            loop_bm.free()
+
+        inner_loops.remove(outer_loop)
+
+        bm.to_mesh(mesh)
+        mesh.update()
+        bm.free()
+
+        return {"outer_curve": outer_loop, "inner_curves": inner_loops}
+
     # An extrusion edge is an edge that shares a single vertex with a profile
     # face and is not on the plane of the face.
     def detect_extrusion_edge(self, bm, profile_face):

src/blenderbim/blenderbim/bim/module/geometry/operator.py

@@ -17,26 +17,32 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
+import bmesh
+import logging
 import numpy as np
 import ifcopenshell
 import ifcopenshell.util.unit
 import ifcopenshell.util.element
 import ifcopenshell.util.representation
-import logging
 import ifcopenshell.api
 import blenderbim.core.geometry as core
+import blenderbim.core.style
+import blenderbim.core.root
 import blenderbim.tool as tool
-from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim import import_ifc
+import blenderbim.bim.handler
+from mathutils import Vector
 from ifcopenshell.api.geometry.data import Data
 from ifcopenshell.api.context.data import Data as ContextData
 from ifcopenshell.api.void.data import Data as VoidData
-from mathutils import Vector
+from blenderbim.bim import import_ifc
+from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.module.root.prop import get_contexts
 
 
 class Operator:
     def execute(self, context):
         IfcStore.execute_ifc_operator(self, context)
+        blenderbim.bim.handler.refresh_ui_data()
         return {"FINISHED"}
 
 
@@ -49,10 +55,10 @@ class EditObjectPlacement(bpy.types.Operator, Operator):
     def _execute(self, context):
         objs = [bpy.data.objects.get(self.obj)] if self.obj else context.selected_objects
         for obj in objs:
-            core.edit_object_placement(tool.Ifc, tool.Surveyor, obj=obj)
+            core.edit_object_placement(tool.Ifc, tool.Geometry, tool.Surveyor, obj=obj)
 
 
-class AddRepresentation(bpy.types.Operator):
+class AddRepresentation(bpy.types.Operator, Operator):
     bl_idname = "bim.add_representation"
     bl_label = "Add Representation"
     bl_options = {"REGISTER", "UNDO"}
@@ -61,94 +67,26 @@ class AddRepresentation(bpy.types.Operator):
     ifc_representation_class: bpy.props.StringProperty()
     profile_set_usage: bpy.props.IntProperty()
 
-    def execute(self, context):
-        return IfcStore.execute_ifc_operator(self, context)
-
     def _execute(self, context):
+        ifc_context = self.context_id
+        if not ifc_context and get_contexts(self, context):
+            ifc_context = int(context.scene.BIMRootProperties.contexts or "0") or None
+        if ifc_context:
+            ifc_context = tool.Ifc.get().by_id(ifc_context)
         obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
-        self.file = IfcStore.get_file()
-
-        core.edit_object_placement(tool.Ifc, tool.Surveyor, obj=obj)
-
-        if not obj.data:
-            return {"FINISHED"}
-
-        product = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
-
-        context_id = self.context_id or int(context.scene.BIMProperties.contexts)
-        context_of_items = self.file.by_id(context_id)
-
-        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),
-                )
-            )
-
-        representation_data = {
-            "context": context_of_items,
-            "blender_object": obj,
-            "geometry": obj.data,
-            "coordinate_offset": coordinate_offset,
-            "total_items": max(1, len(obj.material_slots)),
-            "should_force_faceted_brep": context.scene.BIMGeometryProperties.should_force_faceted_brep,
-            "should_force_triangulation": context.scene.BIMGeometryProperties.should_force_triangulation,
-            "ifc_representation_class": self.ifc_representation_class,
-            "profile_set_usage": self.file.by_id(self.profile_set_usage) if self.profile_set_usage else None,
-        }
-
-        result = ifcopenshell.api.run("geometry.add_representation", self.file, **representation_data)
-
-        if not result:
-            print("Failed to write shape representation")
-            return {"FINISHED"}
-
-        [
-            bpy.ops.bim.add_style(material=s.material.name)
-            for s in obj.material_slots
-            if s.material and not s.material.BIMMaterialProperties.ifc_style_id
-        ]
-
-        if isinstance(obj.data, bpy.types.Mesh) and len(obj.data.polygons):
-            ifcopenshell.api.run(
-                "style.assign_representation_styles",
-                self.file,
-                **{
-                    "shape_representation": result,
-                    "styles": [
-                        self.file.by_id(s.material.BIMMaterialProperties.ifc_style_id)
-                        for s in obj.material_slots
-                        if s.material
-                    ],
-                    "should_use_presentation_style_assignment": context.scene.BIMGeometryProperties.should_use_presentation_style_assignment,
-                },
-            )
-        ifcopenshell.api.run(
-            "geometry.assign_representation", self.file, **{"product": product, "representation": result}
+        core.add_representation(
+            tool.Ifc,
+            tool.Geometry,
+            tool.Style,
+            tool.Surveyor,
+            obj=obj,
+            context=ifc_context,
+            ifc_representation_class=self.ifc_representation_class,
+            profile_set_usage=tool.Ifc.get().by_id(self.profile_set_usage) if self.profile_set_usage else None,
         )
 
-        mesh = obj.data.copy()
-        mesh.name = "{}/{}".format(context_id, result.id())
-        mesh.BIMMeshProperties.ifc_definition_id = int(result.id())
-        obj.data = mesh
-        Data.load(self.file, obj.BIMObjectProperties.ifc_definition_id)
 
-        if product.is_a("IfcTypeProduct"):
-            if self.file.schema == "IFC2X3":
-                types = product.ObjectTypeOf
-            else:
-                types = product.Types
-            if types:
-                for element in types[0].RelatedObjects:
-                    Data.load(self.file, element.id())
-        return {"FINISHED"}
-
-
-class SwitchRepresentation(bpy.types.Operator):
+class SwitchRepresentation(bpy.types.Operator, Operator):
     bl_idname = "bim.switch_representation"
     bl_label = "Switch Representation"
     bl_options = {"REGISTER", "UNDO"}
@@ -158,117 +96,31 @@ class SwitchRepresentation(bpy.types.Operator):
     disable_opening_subtractions: bpy.props.BoolProperty()
     should_switch_all_meshes: bpy.props.BoolProperty()
 
-    def execute(self, context):
-        self.element_obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
-        self.oprops = self.element_obj.BIMObjectProperties
-
-        self.file = IfcStore.get_file()
-        self.context_of_items = self.file.by_id(self.ifc_definition_id).ContextOfItems
-        self.mesh_name = self.get_mesh_name()
-
-        mesh = bpy.data.meshes.get(self.mesh_name)
-        if mesh:
-            self.switch_mesh(mesh)
-        if not mesh or self.should_reload:
-            self.pull_mesh_from_ifc(context)
-        return {"FINISHED"}
-
-    def switch_mesh(self, mesh):
-        if self.should_switch_all_meshes or self.file.by_id(self.oprops.ifc_definition_id).is_a("IfcTypeProduct"):
-            self.element_obj.data.user_remap(mesh)
-        else:
-            self.element_obj.data = mesh
-
-    def get_mesh_name(self):
-        representation = self.resolve_mapped_representation(self.file.by_id(self.ifc_definition_id))
-        return "{}/{}".format(self.context_of_items.id(), representation.id())
-
-    def resolve_mapped_representation(self, representation):
-        if representation.RepresentationType == "MappedRepresentation":
-            return self.resolve_mapped_representation(representation.Items[0].MappingSource.MappedRepresentation)
-        return representation
-
-    def pull_mesh_from_ifc(self, context):
-        logger = logging.getLogger("ImportIFC")
-        ifc_import_settings = import_ifc.IfcImportSettings.factory(context, IfcStore.path, logger)
-        element = self.file.by_id(self.oprops.ifc_definition_id)
-        settings = ifcopenshell.geom.settings()
-
-        if self.context_of_items.ContextIdentifier == "Body":
-            if element.is_a("IfcTypeProduct") or self.disable_opening_subtractions:
-                shape = ifcopenshell.geom.create_shape(settings, self.file.by_id(self.ifc_definition_id))
-            else:
-                shape = ifcopenshell.geom.create_shape(settings, self.file.by_id(self.oprops.ifc_definition_id))
-        else:
-            settings.set(settings.INCLUDE_CURVES, True)
-            shape = ifcopenshell.geom.create_shape(settings, self.file.by_id(self.ifc_definition_id))
-
-        ifc_importer = import_ifc.IfcImporter(ifc_import_settings)
-        ifc_importer.file = self.file
-        mesh = ifc_importer.create_mesh(element, shape)
-        mesh.name = self.mesh_name
-        mesh.BIMMeshProperties.ifc_definition_id = self.ifc_definition_id
-        self.switch_mesh(mesh)
-        material_creator = import_ifc.MaterialCreator(ifc_import_settings, ifc_importer)
-        material_creator.load_existing_materials()
-        material_creator.create(element, self.element_obj, mesh)
-
-        if self.disable_opening_subtractions and self.context_of_items.ContextIdentifier == "Body":
-            if self.oprops.ifc_definition_id not in VoidData.products:
-                VoidData.load(self.file, self.oprops.ifc_definition_id)
-            for opening_id in VoidData.products[self.oprops.ifc_definition_id]:
-                opening = IfcStore.get_element(opening_id)
-                if not opening:
-                    continue
-                modifier = self.element_obj.modifiers.new("IfcOpeningElement", "BOOLEAN")
-                modifier.operation = "DIFFERENCE"
-                modifier.object = opening
-                modifier.solver = "EXACT"
-                modifier.use_self = True
-        else:
-            for modifier in self.element_obj.modifiers:
-                if modifier.type == "BOOLEAN" and "IfcOpeningElement" in modifier.name:
-                    self.element_obj.modifiers.remove(modifier)
+    def _execute(self, context):
+        core.switch_representation(
+            tool.Geometry,
+            obj=bpy.data.objects.get(self.obj) if self.obj else context.active_object,
+            representation=tool.Ifc.get().by_id(self.ifc_definition_id),
+            should_reload=self.should_reload,
+            enable_dynamic_voids=self.disable_opening_subtractions,
+            is_global=self.should_switch_all_meshes,
+            should_sync_changes_first=True,
+        )
 
 
-class RemoveRepresentation(bpy.types.Operator):
+class RemoveRepresentation(bpy.types.Operator, Operator):
     bl_idname = "bim.remove_representation"
     bl_label = "Remove Representation"
     bl_options = {"REGISTER", "UNDO"}
-    obj: bpy.props.StringProperty()
     representation_id: bpy.props.IntProperty()
 
-    def execute(self, context):
-        return IfcStore.execute_ifc_operator(self, context)
-
     def _execute(self, context):
-        self.file = IfcStore.get_file()
-        representation = self.file.by_id(self.representation_id)
-        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
-        is_mapped_representation = representation.RepresentationType == "MappedRepresentation"
-        if is_mapped_representation:
-            mesh_name = "{}/{}".format(
-                representation.ContextOfItems.id(), representation.Items[0].MappingSource.MappedRepresentation.id()
-            )
-        else:
-            mesh_name = "{}/{}".format(representation.ContextOfItems.id(), representation.id())
-        mesh = bpy.data.meshes.get(mesh_name)
-        if mesh:
-            if obj.data == mesh:
-                # TODO we can do better than this
-                void_mesh = bpy.data.meshes.get("Void")
-                if not void_mesh:
-                    void_mesh = bpy.data.meshes.new("Void")
-                obj.data = void_mesh
-            if not is_mapped_representation:
-                bpy.data.meshes.remove(mesh)
-        product = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
-        ifcopenshell.api.run(
-            "geometry.unassign_representation", self.file, **{"product": product, "representation": representation}
+        core.remove_representation(
+            tool.Ifc,
+            tool.Geometry,
+            obj=context.active_object,
+            representation=tool.Ifc.get().by_id(self.representation_id),
         )
-        ifcopenshell.api.run("geometry.remove_representation", self.file, **{"representation": representation})
-        Data.load(self.file, product.id())
-        return {"FINISHED"}
 
 
 class UpdateRepresentation(bpy.types.Operator):
@@ -304,7 +156,7 @@ class UpdateRepresentation(bpy.types.Operator):
             ifcopenshell.api.run("grid.create_axis_curve", self.file, **{"axis_curve": obj, "grid_axis": product})
             return
 
-        bpy.ops.bim.edit_object_placement(obj=obj.name)
+        core.edit_object_placement(tool.Ifc, tool.Geometry, tool.Surveyor, obj=obj)
 
         old_representation = self.file.by_id(obj.data.BIMMeshProperties.ifc_definition_id)
         context_of_items = old_representation.ContextOfItems
@@ -331,10 +183,17 @@ class UpdateRepresentation(bpy.types.Operator):
             "ifc_representation_class": self.ifc_representation_class,
         }
 
+        if not self.ifc_representation_class:
+            representation_data["ifc_representation_class"] = tool.Geometry.get_ifc_representation_class(
+                product, old_representation
+            )
+            representation_data["profile_set_usage"] = tool.Geometry.get_profile_set_usage(product)
+            representation_data["text_literal"] = tool.Geometry.get_text_literal(old_representation)
+
         new_representation = ifcopenshell.api.run("geometry.add_representation", self.file, **representation_data)
 
         [
-            bpy.ops.bim.add_style(material=s.material.name)
+            blenderbim.core.style.add_style(tool.Ifc, tool.Style, obj=s.material)
             for s in obj.material_slots
             if s.material and not s.material.BIMMaterialProperties.ifc_style_id
         ]
@@ -353,6 +212,7 @@ class UpdateRepresentation(bpy.types.Operator):
                     "should_use_presentation_style_assignment": context.scene.BIMGeometryProperties.should_use_presentation_style_assignment,
                 },
             )
+            tool.Geometry.record_object_materials(obj)
 
         # TODO: move this into a replace_representation usecase or something
         for inverse in self.file.get_inverse(old_representation):
@@ -360,10 +220,10 @@ class UpdateRepresentation(bpy.types.Operator):
 
         obj.data.BIMMeshProperties.ifc_definition_id = int(new_representation.id())
         obj.data.name = f"{old_representation.ContextOfItems.id()}/{new_representation.id()}"
-        bpy.ops.bim.remove_representation(representation_id=old_representation.id(), obj=obj.name)
+        core.remove_representation(tool.Ifc, tool.Geometry, obj=obj, representation=old_representation)
         Data.load(self.file, obj.BIMObjectProperties.ifc_definition_id)
         if obj.data.BIMMeshProperties.ifc_parameters:
-            bpy.ops.bim.get_representation_ifc_parameters()
+            core.get_representation_ifc_parameters(tool.Geometry, obj=obj)
 
 
 class UpdateParametricRepresentation(bpy.types.Operator):
@@ -383,34 +243,307 @@ class UpdateParametricRepresentation(bpy.types.Operator):
         parameter = props.ifc_parameters[self.index]
         self.file.by_id(parameter.step_id)[parameter.index] = parameter.value
         show_representation_parameters = bool(props.ifc_parameters)
-        bpy.ops.bim.switch_representation(
-            ifc_definition_id=props.ifc_definition_id, should_reload=True, should_switch_all_meshes=True
+        core.switch_representation(
+            tool.Geometry,
+            obj=obj,
+            representation=tool.Ifc.get().by_id(props.ifc_definition_id),
+            should_reload=True,
+            enable_dynamic_voids=False,
+            is_global=True,
+            should_sync_changes_first=False,
         )
         if show_representation_parameters:
-            bpy.ops.bim.get_representation_ifc_parameters()
+            core.get_representation_ifc_parameters(tool.Geometry, obj=obj)
         return {"FINISHED"}
 
 
-class GetRepresentationIfcParameters(bpy.types.Operator):
+class GetRepresentationIfcParameters(bpy.types.Operator, Operator):
     bl_idname = "bim.get_representation_ifc_parameters"
     bl_label = "Get Representation IFC Parameters"
     bl_options = {"REGISTER", "UNDO"}
 
+    def _execute(self, context):
+        core.get_representation_ifc_parameters(tool.Geometry, obj=context.active_object)
+
+
+class CopyRepresentation(bpy.types.Operator, Operator):
+    bl_idname = "bim.copy_representation"
+    bl_label = "Copy Representation"
+    bl_options = {"REGISTER", "UNDO"}
+    obj: bpy.props.StringProperty()
+
+    def _execute(self, context):
+        if not context.active_object:
+            return
+        bm = bmesh.new()
+        bm.from_mesh(context.active_object.data)
+        geometric_context = tool.Root.get_representation_context(
+            tool.Root.get_object_representation(context.active_object)
+        )
+        for obj in context.selected_objects:
+            if obj == context.active_object:
+                continue
+            if obj.data:
+                element = tool.Ifc.get_entity(obj)
+                if not element:
+                    continue
+                bm.to_mesh(obj.data)
+                old_rep = self.get_representation_by_context(element, geometric_context)
+                if old_rep:
+                    ifcopenshell.api.run(
+                        "geometry.unassign_representation", tool.Ifc.get(), product=element, representation=old_rep
+                    )
+                    ifcopenshell.api.run("geometry.remove_representation", tool.Ifc.get(), representation=old_rep)
+                core.add_representation(
+                    tool.Ifc,
+                    tool.Geometry,
+                    tool.Style,
+                    tool.Surveyor,
+                    obj=obj,
+                    context=geometric_context,
+                    ifc_representation_class=None,
+                    profile_set_usage=None,
+                )
+
+    def get_representation_by_context(self, element, context):
+        if element.is_a("IfcProduct") and element.Representation:
+            for r in element.Representation.Representations:
+                if r.ContextOfItems == context:
+                    return r
+        elif element.is_a("IfcTypeProduct") and element.RepresentationMaps:
+            for r in element.RepresentationMaps:
+                if r.MappedRepresentation.ContextOfItems == context:
+                    return r.MappedRepresentation
+
+
+class OverrideDeleteTrait:
+    def delete_ifc_object(self, obj):
+        if obj.BIMObjectProperties.ifc_definition_id:
+            element = IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id)
+            IfcStore.deleted_ids.add(element.id())
+            if getattr(element, "FillsVoids", None):
+                self.remove_filling(element)
+            if element.is_a("IfcOpeningElement"):
+                for rel in element.HasFillings:
+                    self.remove_filling(rel.RelatedBuildingElement)
+                if element.VoidsElements:
+                    self.delete_opening_element(element)
+            elif getattr(element, "HasOpenings", None):
+                for rel in element.HasOpenings:
+                    self.delete_opening_element(rel.RelatedOpeningElement)
+
+    def delete_opening_element(self, element):
+        obj = IfcStore.get_element(element.VoidsElements[0].RelatingBuildingElement.id())
+        bpy.ops.bim.remove_opening(opening_id=element.id(), obj=obj.name)
+
+    def remove_filling(self, element):
+        obj = IfcStore.get_element(element.id())
+        bpy.ops.bim.remove_filling(obj=obj.name)
+
+
+class OverrideDelete(bpy.types.Operator, OverrideDeleteTrait):
+    bl_idname = "object.delete"
+    bl_label = "Delete"
+    use_global: bpy.props.BoolProperty(default=False)
+    confirm: bpy.props.BoolProperty(default=True)
+
+    @classmethod
+    def poll(cls, context):
+        return len(context.selected_objects) > 0
+
     def execute(self, context):
-        self.file = IfcStore.get_file()
-        obj = context.active_object
-        props = obj.data.BIMMeshProperties
-        elements = self.file.traverse(self.file.by_id(props.ifc_definition_id))
-        props.ifc_parameters.clear()
-        for element in elements:
-            if element.is_a("IfcRepresentationItem") or element.is_a("IfcParameterizedProfileDef"):
-                for i in range(0, len(element)):
-                    if element.attribute_type(i) == "DOUBLE":
-                        new = props.ifc_parameters.add()
-                        new.name = "{}/{}".format(element.is_a(), element.attribute_name(i))
-                        new.step_id = element.id()
-                        new.type = element.attribute_type(i)
-                        new.index = i
-                        if element[i]:
-                            new.value = element[i]
+        # Deep magick from the dawn of time
+        if IfcStore.get_file():
+            return IfcStore.execute_ifc_operator(self, context)
+        for obj in context.selected_objects:
+            bpy.data.objects.remove(obj)
+        return {"FINISHED"}
+
+    def invoke(self, context, event):
+        return context.window_manager.invoke_confirm(self, event)
+
+    def _execute(self, context):
+        for obj in context.selected_objects:
+            self.delete_ifc_object(obj)
+            bpy.data.objects.remove(obj)
+        return {"FINISHED"}
+
+
+class OverrideOutlinerDelete(bpy.types.Operator, OverrideDeleteTrait):
+    bl_idname = "outliner.delete"
+    bl_label = "Delete"
+    hierarchy: bpy.props.BoolProperty(default=False)
+
+    @classmethod
+    def poll(cls, context):
+        return len(context.selected_ids) > 0
+
+    def execute(self, context):
+        # In this override, we don't check self.hierarchy. This effectively
+        # makes Delete and Delete Hierarchy identical. This is on purpose, since
+        # non-hierarchical deletion may imply a whole bunch of potentially
+        # unintended IFC spatial modifications. To make life less confusing for
+        # the user, Delete means Delete. End of story.
+        # Deep magick from the dawn of time
+        if IfcStore.get_file():
+            return IfcStore.execute_ifc_operator(self, context)
+        # https://blender.stackexchange.com/questions/203729/python-get-selected-objects-in-outliner
+        objects_to_delete = set()
+        collections_to_delete = set()
+        for item in context.selected_ids:
+            if item.bl_rna.identifier == "Collection":
+                collection = bpy.data.collections.get(item.name)
+                collection_data = self.get_collection_objects_and_children(collection)
+                print(collection_data)
+                objects_to_delete |= collection_data["objects"]
+                collections_to_delete |= collection_data["children"]
+                collections_to_delete.add(collection)
+            elif item.bl_rna.identifier == "Object":
+                objects_to_delete.add(bpy.data.objects.get(item.name))
+        for obj in objects_to_delete:
+            bpy.data.objects.remove(obj)
+        for collection in collections_to_delete:
+            bpy.data.collections.remove(collection)
+        return {"FINISHED"}
+
+    def _execute(self, context):
+        objects_to_delete = set()
+        collections_to_delete = set()
+        for item in context.selected_ids:
+            if item.bl_rna.identifier == "Collection":
+                collection = bpy.data.collections.get(item.name)
+                collection_data = self.get_collection_objects_and_children(collection)
+                objects_to_delete |= collection_data["objects"]
+                collections_to_delete |= collection_data["children"]
+                collections_to_delete.add(collection)
+            elif item.bl_rna.identifier == "Object":
+                objects_to_delete.add(bpy.data.objects.get(item.name))
+        for obj in objects_to_delete:
+            # This is the only difference
+            self.delete_ifc_object(obj)
+            bpy.data.objects.remove(obj)
+        for collection in collections_to_delete:
+            bpy.data.collections.remove(collection)
+        return {"FINISHED"}
+
+    def get_collection_objects_and_children(self, collection):
+        objects = set()
+        children = set()
+        queue = [collection]
+        while queue:
+            collection = queue.pop()
+            for obj in collection.objects:
+                print('obj is', obj)
+                objects.add(obj)
+            queue.extend(collection.children)
+            children = children.union(collection.children)
+        return {"objects": objects, "children": children}
+
+
+class OverrideDuplicateMove(bpy.types.Operator):
+    bl_idname = "object.duplicate_move"
+    bl_label = "Duplicate Objects"
+
+    @classmethod
+    def poll(cls, context):
+        return len(context.selected_objects) > 0
+
+    def execute(self, context):
+        # Deep magick from the dawn of time
+        if IfcStore.get_file():
+            IfcStore.execute_ifc_operator(self, context)
+            if self.new_active_obj:
+                context.view_layer.objects.active = self.new_active_obj
+            return {"FINISHED"}
+
+        new_active_obj = None
+        for obj in context.selected_objects:
+            new_obj = obj.copy()
+            if obj.data:
+                new_obj.data = obj.data.copy()
+            if obj == context.active_object:
+                new_active_obj = new_obj
+            for collection in obj.users_collection:
+                collection.objects.link(new_obj)
+            obj.select_set(False)
+            new_obj.select_set(True)
+        if new_active_obj:
+            context.view_layer.objects.active = new_active_obj
+        bpy.ops.transform.translate("INVOKE_DEFAULT")
+        return {"FINISHED"}
+
+    def _execute(self, context):
+        self.new_active_obj = None
+        for obj in context.selected_objects:
+            new_obj = obj.copy()
+            if obj.data:
+                new_obj.data = obj.data.copy()
+            if obj == context.active_object:
+                self.new_active_obj = new_obj
+            for collection in obj.users_collection:
+                collection.objects.link(new_obj)
+            obj.select_set(False)
+            new_obj.select_set(True)
+            # This is the only difference
+            blenderbim.core.root.copy_class(tool.Ifc, tool.Collector, tool.Geometry, tool.Root, obj=new_obj)
+        bpy.ops.transform.translate("INVOKE_DEFAULT")
+        blenderbim.bim.handler.purge_module_data()
+
+
+class OverrideDuplicateMoveLinked(bpy.types.Operator):
+    bl_idname = "object.duplicate_move_linked"
+    bl_label = "Duplicate Linked"
+
+    @classmethod
+    def poll(cls, context):
+        return len(context.selected_objects) > 0
+
+    def execute(self, context):
+        # Deep magick from the dawn of time
+        if IfcStore.get_file():
+            IfcStore.execute_ifc_operator(self, context)
+            if self.new_active_obj:
+                context.view_layer.objects.active = self.new_active_obj
+            return {"FINISHED"}
+
+        new_active_obj = None
+        for obj in context.selected_objects:
+            new_obj = obj.copy()
+            if obj == context.active_object:
+                new_active_obj = new_obj
+            for collection in obj.users_collection:
+                collection.objects.link(new_obj)
+            obj.select_set(False)
+            new_obj.select_set(True)
+        if new_active_obj:
+            context.view_layer.objects.active = new_active_obj
+        bpy.ops.transform.translate("INVOKE_DEFAULT")
+        return {"FINISHED"}
+
+    def _execute(self, context):
+        self.new_active_obj = None
+        for obj in context.selected_objects:
+            new_obj = obj.copy()
+            if obj == context.active_object:
+                self.new_active_obj = new_obj
+            for collection in obj.users_collection:
+                collection.objects.link(new_obj)
+            obj.select_set(False)
+            new_obj.select_set(True)
+            # This is the only difference
+            blenderbim.core.root.copy_class(tool.Ifc, tool.Collector, tool.Geometry, tool.Root, obj=new_obj)
+        bpy.ops.transform.translate("INVOKE_DEFAULT")
+        blenderbim.bim.handler.purge_module_data()
+        return {"FINISHED"}
+
+
+class OverridePasteBuffer(bpy.types.Operator):
+    bl_idname = "bim.override_paste_buffer"
+    bl_label = "Paste BIM Objects"
+
+    def execute(self, context):
+        bpy.ops.view3d.pastebuffer()
+        if IfcStore.get_file():
+            for obj in context.selected_objects:
+                blenderbim.core.root.copy_class(tool.Ifc, tool.Collector, tool.Geometry, tool.Root, obj=obj)
         return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/geometry/ui.py

@@ -18,8 +18,8 @@
 
 import bpy
 from bpy.types import Panel
-from ifcopenshell.api.geometry.data import Data
 from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.module.geometry.data import RepresentationsData, DerivedPlacementsData
 
 
 class BIM_PT_representations(Panel):
@@ -29,6 +29,7 @@ class BIM_PT_representations(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_geometry_and_spatial_structure"
 
     @classmethod
     def poll(cls, context):
@@ -39,33 +40,31 @@ class BIM_PT_representations(Panel):
         return IfcStore.get_file()
 
     def draw(self, context):
+        if not RepresentationsData.is_loaded:
+            RepresentationsData.load()
+
         layout = self.layout
         props = context.active_object.BIMObjectProperties
 
-        if props.ifc_definition_id not in Data.products:
-            Data.load(IfcStore.get_file(), props.ifc_definition_id)
-
-        representations = Data.products[props.ifc_definition_id]
-        if not representations:
+        if not RepresentationsData.data["representations"]:
             layout.label(text="No representations found")
 
         row = layout.row(align=True)
         row.prop(context.scene.BIMProperties, "contexts", text="")
         row.operator("bim.add_representation", icon="ADD", text="")
 
-        for ifc_definition_id in representations:
-            representation = Data.representations[ifc_definition_id]
+        for representation in RepresentationsData.data["representations"]:
             row = self.layout.row(align=True)
-            row.label(text=representation["ContextOfItems"]["ContextType"])
-            row.label(text=representation["ContextOfItems"]["ContextIdentifier"])
-            row.label(text=representation["ContextOfItems"]["TargetView"])
+            row.label(text=representation["ContextType"])
+            row.label(text=representation["ContextIdentifier"])
+            row.label(text=representation["TargetView"])
             row.label(text=representation["RepresentationType"])
             op = row.operator("bim.switch_representation", icon="OUTLINER_DATA_MESH", text="")
             op.should_switch_all_meshes = True
             op.should_reload = True
-            op.ifc_definition_id = ifc_definition_id
+            op.ifc_definition_id = representation["id"]
             op.disable_opening_subtractions = False
-            row.operator("bim.remove_representation", icon="X", text="").representation_id = ifc_definition_id
+            row.operator("bim.remove_representation", icon="X", text="").representation_id = representation["id"]
 
 
 class BIM_PT_mesh(Panel):
@@ -102,9 +101,16 @@ class BIM_PT_mesh(Panel):
         op.ifc_definition_id = props.ifc_definition_id
         op.disable_opening_subtractions = True
 
+        row = layout.row()
+        row.operator("bim.copy_representation")
+
         row = layout.row()
         row.operator("bim.update_representation")
 
+        row = layout.row()
+        op = row.operator("bim.update_representation", text="Update Mesh As Tessellation")
+        op.ifc_representation_class = "IfcTessellatedFaceSet"
+
         row = layout.row()
         op = row.operator("bim.update_representation", text="Update Mesh As Rectangle Extrusion")
         op.ifc_representation_class = "IfcExtrudedAreaSolid/IfcRectangleProfileDef"
@@ -150,24 +156,28 @@ class BIM_PT_derived_placements(Panel):
     bl_parent_id = "OBJECT_PT_transform"
 
     def draw(self, context):
-        z = context.active_object.matrix_world.translation.z
-        z_values = [co[2] for co in context.active_object.bound_box]
+        if not DerivedPlacementsData.is_loaded:
+            DerivedPlacementsData.load()
+
         row = self.layout.row(align=True)
         row.label(text="Min Global Z")
-        row.label(text="{0:.3f}".format(min(z_values) + z))
+        row.label(text=DerivedPlacementsData.data["min_global_z"])
         row = self.layout.row(align=True)
         row.label(text="Max Global Z")
-        row.label(text="{0:.3f}".format(max(z_values) + z))
+        row.label(text=DerivedPlacementsData.data["max_global_z"])
 
-        collection = bpy.data.objects.get(context.active_object.users_collection[0].name)
-        if collection:
-            collection_z = collection.matrix_world.translation.z
+        if DerivedPlacementsData.data["has_collection"]:
             row = self.layout.row(align=True)
-            row.label(text="Min Local Z")
-            row.label(text="{0:.3f}".format(min(z_values) + z - collection_z))
+            row.label(text="Min Decomposed Z")
+            row.label(text=DerivedPlacementsData.data["min_decomposed_z"])
             row = self.layout.row(align=True)
-            row.label(text="Max Local Z")
-            row.label(text="{0:.3f}".format(max(z_values) + z - collection_z))
+            row.label(text="Max Decomposed Z")
+            row.label(text=DerivedPlacementsData.data["max_decomposed_z"])
+
+        if DerivedPlacementsData.data["is_storey"]:
+            row = self.layout.row(align=True)
+            row.label(text="Storey Height")
+            row.label(text=DerivedPlacementsData.data["storey_height"])
 
 
 class BIM_PT_workarounds(Panel):

src/blenderbim/blenderbim/bim/module/georeference/ui.py

@@ -30,6 +30,7 @@ class BIM_PT_gis(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_geometry_and_spatial_structure"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/gis/__init__.py

@@ -0,0 +1,37 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+from . import prop
+from . import operator
+from . import ui
+
+classes = (
+    prop.BIMCityJsonProperties,
+    operator.BIM_OT_cityjson2ifc,
+    operator.BIM_OT_find_cityjson_lod,
+    ui.BIM_PT_cityjson_converter,
+)
+
+
+def register():
+    bpy.types.Scene.ifccityjson_properties = bpy.props.PointerProperty(type=prop.BIMCityJsonProperties)
+
+
+def unregister():
+    del bpy.types.Scene.ifccityjson_properties

src/blenderbim/blenderbim/bim/module/gis/operator.py

@@ -0,0 +1,69 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+from bpy.types import Operator
+
+
+class BIM_OT_cityjson2ifc(Operator):
+    bl_idname = "bim.convert_cityjson2ifc"
+    bl_label = "Convert CityJSON to IFC"
+    bl_context = "scene"
+
+    def execute(self, context):
+        from cjio import cityjson
+        from ifccityjson.cityjson2ifc.cityjson2ifc import Cityjson2ifc
+
+        props = context.scene.ifccityjson_properties
+        city_model = cityjson.load(props.input, transform=False)
+        data = {
+            "file_destination": props.output,
+            "lod": props.lod,
+            "split": props.split_lod,
+        }
+        if props.name != "":
+            data["name_attribute"] = props.name
+
+        converter = Cityjson2ifc()
+        converter.configuration(**data)
+        converter.convert(city_model)
+        if props.load_after_convert:
+            bpy.ops.bim.load_project(filepath=props.output)
+        return {"FINISHED"}
+
+
+class BIM_OT_find_cityjson_lod(Operator):
+    bl_idname = "bim.find_cityjson_lod"
+    bl_label = "Find LODs in CityJSON file"
+    bl_context = "scene"
+
+    def execute(self, context):
+        from cjio import cityjson
+
+        props = context.scene.ifccityjson_properties
+        city_model = cityjson.load(props.input)
+        lods = set()
+        for obj_id, obj in city_model.get_cityobjects().items():
+            for geometry in obj.geometry:
+                lod = str(geometry.lod)
+                if lod not in lods:
+                    lods.add(lod)
+                    props.lods.add()
+                    props.lods[-1].name = lod
+        props.is_lod_found = True
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/gis/prop.py

@@ -0,0 +1,36 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+from bpy.types import PropertyGroup
+from bpy.props import StringProperty, BoolProperty, EnumProperty, CollectionProperty
+from blenderbim.bim.prop import StrProperty
+
+
+class BIMCityJsonProperties(PropertyGroup):
+    def get_lods(self, context):
+        return [(item.name, "LOD" + item.name, "Level of Detail " + item.name) for item in self.lods]
+
+    # TODO: instead of subtype it would be nice to have a helper operator that allows filtered file browsing
+    input: StringProperty(name="CityJSON Input", default="", subtype="FILE_PATH")
+    output: StringProperty(name="IFC Output", default="", subtype="FILE_PATH")
+    name: StringProperty(name="Identifier", default="")
+    split_lod: BoolProperty(name="Should Split LOD", default=True)
+    lods: CollectionProperty(name="LODs", type=StrProperty)
+    lod: EnumProperty(name="LOD", description="", items=get_lods, options={"ANIMATABLE"}, default=None)
+    is_lod_found: BoolProperty(name="Is LOD Found", default=False)
+    load_after_convert: BoolProperty(name="Load After Converting", default=True)

src/blenderbim/blenderbim/bim/module/gis/ui.py

@@ -0,0 +1,52 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+from bpy.types import Panel
+
+
+class BIM_PT_cityjson_converter(Panel):
+    bl_label = "IFC CityJSON"
+    bl_idname = "BIM_PT_ifccityjson"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_collaboration_and_data_exchange"
+
+    def draw(self, context):
+        layout = self.layout
+        scene = context.scene
+        props = scene.ifccityjson_properties
+
+        row = layout.row(align=True)
+        row.prop(props, "input")
+        row = layout.row(align=True)
+        row.operator("bim.find_cityjson_lod")
+        row = layout.row(align=True)
+        row.prop(props, "output")
+        row = layout.row(align=True)
+        row.prop(props, "name")
+        row = layout.row(align=True)
+        row.prop(props, "split_lod")
+        row.prop(props, "load_after_convert")
+        row = layout.row(align=True)
+        row.prop(props, "lod")
+        if not props.is_lod_found:
+            row.enabled = False
+        row = layout.row(align=True)
+        row.operator("bim.convert_cityjson2ifc")

src/blenderbim/blenderbim/bim/module/group/ui.py

@@ -28,6 +28,7 @@ class BIM_PT_groups(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_utilities"
 
     @classmethod
     def poll(cls, context):
@@ -74,6 +75,7 @@ class BIM_PT_object_groups(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_utilities_object"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/layer/ui.py

@@ -28,6 +28,7 @@ class BIM_PT_layers(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "scene"
+    bl_parent_id = "BIM_PT_geometry_and_spatial_structure_object"
 
     @classmethod
     def poll(cls, context):

src/blenderbim/blenderbim/bim/module/lca/__init__.py

@@ -21,6 +21,7 @@ from . import ui, prop, operator
 
 classes = (
     operator.CalculateLCA,
+    operator.ConnectOpenLCA,
     prop.BIMLCAProperties,
     ui.BIM_PT_lca,
 )

src/blenderbim/blenderbim/bim/module/lca/data.py

@@ -0,0 +1,49 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import olca
+import blenderbim.tool as tool
+
+
+def refresh():
+    LcaData.is_loaded = False
+
+
+class LcaData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.data = {
+            "product_systems": cls.product_systems(),
+        }
+        cls.is_loaded = True
+
+    @classmethod
+    def product_systems(cls):
+        if not bpy.context.scene.BIMLCAProperties.is_connected:
+            return []
+        results = []
+        client = olca.Client(context.preferences.addons["blenderbim"].preferences.openlca_port)
+        try:
+            results = [(ps.name, ps.name, "") for ps in client.get_all(olca.ProductSystem)]
+        except:
+            pass
+        return results

src/blenderbim/blenderbim/bim/module/lca/operator.py

@@ -43,3 +43,13 @@ class CalculateLCA(bpy.types.Operator):
     def invoke(self, context, event):
         context.window_manager.fileselect_add(self)
         return {"RUNNING_MODAL"}
+
+
+class ConnectOpenLCA(bpy.types.Operator):
+    bl_idname = "bim.connect_openlca"
+    bl_label = "Connect OpenLCA"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        bpy.context.scene.BIMLCAProperties.is_connected = True
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/lca/prop.py

@@ -17,7 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
-import olca
+from blenderbim.bim.module.lca.data import LcaData
 from blenderbim.bim.prop import StrProperty, Attribute
 from bpy.types import PropertyGroup
 from bpy.props import (
@@ -31,25 +31,14 @@ from bpy.props import (
     CollectionProperty,
 )
 
-productsystems_enum = []
-
-
-def purge():
-    global productsystems_enum
-    productsystems_enum = []
-
 
 def get_product_systems(self, context):
-    global productsystems_enum
-    if not len(productsystems_enum):
-        client = olca.Client(context.preferences.addons["blenderbim"].preferences.openlca_port)
-        try:
-            productsystems_enum = [(ps.name, ps.name, "") for ps in client.get_all(olca.ProductSystem)]
-        except:
-            pass
-    return productsystems_enum
+    if not LcaData.is_loaded:
+        LcaData.load()
+    return LcaData.data["product_systems"]
 
 
 class BIMLCAProperties(PropertyGroup):
+    is_connected: BoolProperty(name="Is Connected")
     amount: FloatProperty(name="Amount")
     product_systems: EnumProperty(items=get_product_systems, name="Product Systems")

src/blenderbim/blenderbim/bim/module/lca/ui.py

@@ -30,9 +30,13 @@ class BIM_PT_lca(Panel):
 
     def draw(self, context):
         props = context.scene.BIMLCAProperties
-        row = self.layout.row()
-        row.prop(props, "product_systems", text="")
-        row = self.layout.row()
-        row.prop(props, "amount", text="")
-        row = self.layout.row()
-        row.operator("bim.calculate_lca")
+        if props.is_connected:
+            row = self.layout.row()
+            row.prop(props, "product_systems", text="")
+            row = self.layout.row()
+            row.prop(props, "amount", text="")
+            row = self.layout.row()
+            row.operator("bim.calculate_lca")
+        else:
+            row = self.layout.row()
+            row.operator("bim.connect_openlca")

src/blenderbim/blenderbim/bim/module/library/__init__.py

@@ -0,0 +1,51 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+from . import ui, prop, operator
+
+classes = (
+    operator.AddLibrary,
+    operator.AddLibraryReference,
+    operator.AssignLibraryReference,
+    operator.DisableEditingLibrary,
+    operator.DisableEditingLibraryReference,
+    operator.DisableEditingLibraryReferences,
+    operator.EditLibrary,
+    operator.EditLibraryReference,
+    operator.EnableEditingLibrary,
+    operator.EnableEditingLibraryReference,
+    operator.EnableEditingLibraryReferences,
+    operator.RemoveLibrary,
+    operator.RemoveLibraryReference,
+    operator.UnassignLibraryReference,
+    prop.LibraryReference,
+    prop.BIMLibraryProperties,
+    ui.BIM_PT_libraries,
+    ui.BIM_PT_library_references,
+    ui.BIM_UL_library_references,
+    ui.BIM_UL_object_library_references,
+)
+
+
+def register():
+    bpy.types.Scene.BIMLibraryProperties = bpy.props.PointerProperty(type=prop.BIMLibraryProperties)
+
+
+def unregister():
+    del bpy.types.Scene.BIMLibraryProperties

src/blenderbim/blenderbim/bim/module/library/data.py

@@ -0,0 +1,110 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import blenderbim.tool as tool
+
+
+def refresh():
+    LibrariesData.is_loaded = False
+    LibraryReferencesData.is_loaded = False
+
+
+class LibrariesData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data = {
+            "libraries": cls.libraries(),
+            "library_attributes": cls.library_attributes(),
+            "reference_attributes": cls.reference_attributes(),
+        }
+
+    @classmethod
+    def libraries(cls):
+        results = []
+        for library in tool.Ifc.get().by_type("IfcLibraryInformation"):
+            results.append({"id": library.id(), "name": library.Name})
+        return results
+
+    @classmethod
+    def library_attributes(cls):
+        library_id = bpy.context.scene.BIMLibraryProperties.active_library_id
+        if not library_id:
+            return []
+        results = []
+        data = tool.Ifc.get().by_id(library_id).get_info()
+        if tool.Ifc.get_schema() == "IFC2X3":
+            del data["VersionDate"]
+        for key, value in data.items():
+            if key in ["id", "type"]:
+                continue
+            if value is not None:
+                results.append({"name": key, "value": str(value)})
+        return results
+
+    @classmethod
+    def reference_attributes(cls):
+        props = bpy.context.scene.BIMLibraryProperties
+        try:
+            reference_id = props.references[props.active_reference_index].ifc_definition_id
+        except:
+            return []
+        if not reference_id:
+            return []
+        results = []
+        data = tool.Ifc.get().by_id(reference_id).get_info()
+        del data["ReferencedLibrary"]
+        for key, value in data.items():
+            if key in ["id", "type"]:
+                continue
+            if value is not None:
+                results.append({"name": key, "value": str(value)})
+        return results
+
+
+class LibraryReferencesData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data = {
+            "references": cls.references(),
+        }
+
+    @classmethod
+    def references(cls):
+        results = []
+        for rel in getattr(tool.Ifc.get_entity(bpy.context.active_object), "HasAssociations", []):
+            if rel.is_a("IfcRelAssociatesLibrary"):
+                library = rel.RelatingLibrary
+                results.append(
+                    {
+                        "id": library.id(),
+                        "identification": library.ItemReference
+                        if tool.Ifc.get_schema() == "IFC2X3"
+                        else library.Identification,
+                        "name": library.Name or "Unnamed",
+                    }
+                )
+        return results

src/blenderbim/blenderbim/bim/module/library/operator.py

@@ -0,0 +1,167 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import ifcopenshell.api
+import blenderbim.tool as tool
+import blenderbim.core.library as core
+import blenderbim.bim.handler
+from blenderbim.bim.ifc import IfcStore
+
+
+class Operator:
+    def execute(self, context):
+        IfcStore.execute_ifc_operator(self, context)
+        blenderbim.bim.handler.refresh_ui_data()
+        return {"FINISHED"}
+
+
+class AddLibrary(bpy.types.Operator, Operator):
+    bl_idname = "bim.add_library"
+    bl_label = "Add Library"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.add_library(tool.Ifc)
+
+
+class RemoveLibrary(bpy.types.Operator, Operator):
+    bl_idname = "bim.remove_library"
+    bl_label = "Remove Library"
+    bl_options = {"REGISTER", "UNDO"}
+    library: bpy.props.IntProperty()
+
+    def _execute(self, context):
+        core.remove_library(tool.Ifc, library=tool.Ifc.get().by_id(self.library))
+
+
+class EnableEditingLibraryReferences(bpy.types.Operator, Operator):
+    bl_idname = "bim.enable_editing_library_references"
+    bl_label = "Enable Editing Library References"
+    bl_options = {"REGISTER", "UNDO"}
+    library: bpy.props.IntProperty()
+
+    def _execute(self, context):
+        core.enable_editing_library_references(tool.Library, library=tool.Ifc.get().by_id(self.library))
+
+
+class DisableEditingLibraryReferences(bpy.types.Operator, Operator):
+    bl_idname = "bim.disable_editing_library_references"
+    bl_label = "Disable Editing Library References"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.disable_editing_library_references(tool.Library)
+
+
+class EnableEditingLibrary(bpy.types.Operator, Operator):
+    bl_idname = "bim.enable_editing_library"
+    bl_label = "Enable Editing Library"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.enable_editing_library(tool.Library)
+
+
+class DisableEditingLibrary(bpy.types.Operator, Operator):
+    bl_idname = "bim.disable_editing_library"
+    bl_label = "Disable Editing Library"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.disable_editing_library(tool.Library)
+
+
+class EditLibrary(bpy.types.Operator, Operator):
+    bl_idname = "bim.edit_library"
+    bl_label = "Edit Library"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.edit_library(tool.Ifc, tool.Library)
+
+
+class AddLibraryReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.add_library_reference"
+    bl_label = "Add Library Reference"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.add_library_reference(tool.Ifc, tool.Library)
+
+
+class RemoveLibraryReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.remove_library_reference"
+    bl_label = "Remove Library Reference"
+    bl_options = {"REGISTER", "UNDO"}
+    reference: bpy.props.IntProperty()
+
+    def _execute(self, context):
+        core.remove_library_reference(tool.Ifc, tool.Library, reference=tool.Ifc.get().by_id(self.reference))
+
+
+class EnableEditingLibraryReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.enable_editing_library_reference"
+    bl_label = "Enable Editing Library Reference"
+    bl_options = {"REGISTER", "UNDO"}
+    reference: bpy.props.IntProperty()
+
+    def _execute(self, context):
+        core.enable_editing_library_reference(tool.Library, reference=tool.Ifc.get().by_id(self.reference))
+
+
+class DisableEditingLibraryReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.disable_editing_library_reference"
+    bl_label = "Disable Editing Library Reference"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.disable_editing_library_reference(tool.Library)
+
+
+class EditLibraryReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.edit_library_reference"
+    bl_label = "Edit Library Reference"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.edit_library_reference(tool.Ifc, tool.Library)
+
+
+class AssignLibraryReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.assign_library_reference"
+    bl_label = "Assign Library Reference"
+    bl_options = {"REGISTER", "UNDO"}
+    reference: bpy.props.IntProperty()
+
+    def _execute(self, context):
+        core.assign_library_reference(
+            tool.Ifc, obj=context.active_object, reference=tool.Ifc.get().by_id(self.reference)
+        )
+
+
+class UnassignLibraryReference(bpy.types.Operator, Operator):
+    bl_idname = "bim.unassign_library_reference"
+    bl_label = "Unassign Library Reference"
+    bl_options = {"REGISTER", "UNDO"}
+    reference: bpy.props.IntProperty()
+
+    def _execute(self, context):
+        core.unassign_library_reference(
+            tool.Ifc, obj=context.active_object, reference=tool.Ifc.get().by_id(self.reference)
+        )

src/blenderbim/blenderbim/bim/module/library/prop.py

@@ -0,0 +1,51 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+from blenderbim.bim.prop import StrProperty, Attribute
+from blenderbim.bim.module.library.data import LibrariesData
+from bpy.types import PropertyGroup
+from bpy.props import (
+    PointerProperty,
+    StringProperty,
+    EnumProperty,
+    BoolProperty,
+    IntProperty,
+    FloatProperty,
+    FloatVectorProperty,
+    CollectionProperty,
+)
+
+
+def update_active_reference_index(self, context):
+    LibrariesData.is_loaded = False
+
+
+class LibraryReference(PropertyGroup):
+    name: StringProperty(name="Name")
+    ifc_definition_id: IntProperty(name="IFC Definition ID")
+
+
+class BIMLibraryProperties(PropertyGroup):
+    editing_mode: StringProperty(name="Editing Mode")
+    library_attributes: CollectionProperty(name="Library Attributes", type=Attribute)
+    active_library_id: IntProperty(name="Active Library Id")
+    reference_attributes: CollectionProperty(name="Library Attributes", type=Attribute)
+    active_reference_id: IntProperty(name="Active Reference Id")
+    references: CollectionProperty(type=LibraryReference, name="References")
+    active_reference_index: IntProperty(name="Active Reference Index", update=update_active_reference_index)

src/blenderbim/blenderbim/bim/module/library/ui.py

@@ -0,0 +1,147 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import blenderbim.bim.helper
+import blenderbim.tool as tool
+from bpy.types import Panel, UIList
+from blenderbim.bim.module.library.data import LibrariesData, LibraryReferencesData
+
+
+class BIM_PT_libraries(Panel):
+    bl_label = "IFC Libraries"
+    bl_idname = "BIM_PT_libraries"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_project_and_template_setup"
+
+    @classmethod
+    def poll(cls, context):
+        return tool.Ifc.get()
+
+    def draw(self, context):
+        if not LibrariesData.is_loaded:
+            LibrariesData.load()
+        self.props = context.scene.BIMLibraryProperties
+
+        if self.props.editing_mode == "LIBRARY":
+            self.draw_editable_library_ui()
+        elif self.props.editing_mode == "REFERENCE":
+            self.draw_editable_reference_ui()
+        elif self.props.editing_mode == "REFERENCES":
+            self.draw_editable_references_ui()
+        else:
+            self.draw_readonly_library_ui()
+
+    def draw_editable_library_ui(self):
+        row = self.layout.row(align=True)
+        row.operator("bim.edit_library", icon="CHECKMARK")
+        row.operator("bim.disable_editing_library", text="", icon="CANCEL")
+        blenderbim.bim.helper.draw_attributes(self.props.library_attributes, self.layout)
+
+    def draw_editable_references_ui(self):
+        row = self.layout.row(align=True)
+        row.operator("bim.enable_editing_library", icon="GREASEPENCIL")
+        row.operator("bim.disable_editing_library_references", text="", icon="CANCEL")
+
+        for attribute in LibrariesData.data["library_attributes"]:
+            row = self.layout.row(align=True)
+            row.label(text=attribute["name"])
+            row.label(text=attribute["value"])
+
+        row = self.layout.row(align=True)
+        row.operator("bim.add_library_reference", icon="ADD")
+
+        self.layout.template_list(
+            "BIM_UL_library_references", "", self.props, "references", self.props, "active_reference_index"
+        )
+
+        for attribute in LibrariesData.data["reference_attributes"]:
+            row = self.layout.row(align=True)
+            row.label(text=attribute["name"])
+            row.label(text=attribute["value"])
+
+    def draw_editable_reference_ui(self):
+        row = self.layout.row(align=True)
+        row.operator("bim.edit_library_reference", icon="CHECKMARK")
+        row.operator("bim.disable_editing_library_reference", text="", icon="CANCEL")
+        blenderbim.bim.helper.draw_attributes(self.props.reference_attributes, self.layout)
+
+    def draw_readonly_library_ui(self):
+        row = self.layout.row()
+        row.operator("bim.add_library", icon="ADD")
+        for library in LibrariesData.data["libraries"]:
+            row = self.layout.row(align=True)
+            row.label(text=library["name"], icon="ASSET_MANAGER")
+            row.operator("bim.enable_editing_library_references", text="", icon="OUTLINER").library = library["id"]
+            row.operator("bim.remove_library", text="", icon="X").library = library["id"]
+
+
+class BIM_PT_library_references(Panel):
+    bl_label = "IFC Library References"
+    bl_idname = "BIM_PT_library_references"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+    bl_parent_id = "BIM_PT_misc_object"
+
+    @classmethod
+    def poll(cls, context):
+        return tool.Ifc.get()
+
+    def draw(self, context):
+        if not LibraryReferencesData.is_loaded:
+            LibraryReferencesData.load()
+        self.props = context.scene.BIMLibraryProperties
+
+        if self.props.editing_mode == "REFERENCES":
+            self.layout.template_list(
+                "BIM_UL_object_library_references", "", self.props, "references", self.props, "active_reference_index"
+            )
+
+        if not LibraryReferencesData.data["references"]:
+            row = self.layout.row()
+            row.label(text="No References")
+
+        for reference in LibraryReferencesData.data["references"]:
+            row = self.layout.row(align=True)
+            row.label(text=reference["identification"], icon="ASSET_MANAGER")
+            row.label(text=reference["name"])
+            row.operator("bim.unassign_library_reference", text="", icon="X").reference = reference["id"]
+
+
+class BIM_UL_library_references(UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        if item:
+            row = layout.row(align=True)
+            row.label(text=item.name)
+            op = row.operator("bim.enable_editing_library_reference", text="", icon="GREASEPENCIL")
+            op.reference = item.ifc_definition_id
+            op = row.operator("bim.remove_library_reference", text="", icon="X")
+            op.reference = item.ifc_definition_id
+
+
+class BIM_UL_object_library_references(UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        if item:
+            row = layout.row(align=True)
+            row.label(text=item.name)
+            op = row.operator("bim.assign_library_reference", text="", icon="ADD")
+            op.reference = item.ifc_definition_id

src/blenderbim/blenderbim/bim/module/material/__init__.py

@@ -20,27 +20,29 @@ import bpy
 from . import ui, prop, operator
 
 classes = (
-    operator.CopyMaterial,
-    operator.AddMaterial,
-    operator.RemoveMaterial,
-    operator.AssignMaterial,
-    operator.UnassignMaterial,
     operator.AddConstituent,
-    operator.RemoveConstituent,
-    operator.AddProfile,
-    operator.RemoveProfile,
-    operator.AssignParameterizedProfile,
+    operator.AddDefaultMaterial,
     operator.AddLayer,
-    operator.RemoveLayer,
-    operator.ReorderMaterialSetItem,
     operator.AddListItem,
-    operator.RemoveListItem,
-    operator.EnableEditingAssignedMaterial,
+    operator.AddMaterial,
+    operator.AddProfile,
+    operator.AssignMaterial,
+    operator.AssignParameterizedProfile,
+    operator.CopyMaterial,
     operator.DisableEditingAssignedMaterial,
-    operator.EditAssignedMaterial,
-    operator.EnableEditingMaterialSetItem,
     operator.DisableEditingMaterialSetItem,
+    operator.EditAssignedMaterial,
     operator.EditMaterialSetItem,
+    operator.EnableEditingAssignedMaterial,
+    operator.EnableEditingMaterialSetItem,
+    operator.RemoveConstituent,
+    operator.RemoveLayer,
+    operator.RemoveListItem,
+    operator.RemoveMaterial,
+    operator.RemoveProfile,
+    operator.ReorderMaterialSetItem,
+    operator.UnassignMaterial,
+    operator.UnlinkMaterial,
     prop.BIMObjectMaterialProperties,
     ui.BIM_PT_material,
     ui.BIM_PT_object_material,

src/blenderbim/blenderbim/bim/module/material/operator.py

@@ -23,12 +23,21 @@ import ifcopenshell.util.element
 import ifcopenshell.util.attribute
 import ifcopenshell.util.representation
 import blenderbim.bim.helper
+import blenderbim.tool as tool
+import blenderbim.core.material as core
 from blenderbim.bim.module.material.prop import purge as material_prop_purge
 from blenderbim.bim.ifc import IfcStore
 from ifcopenshell.api.material.data import Data
 from ifcopenshell.api.profile.data import Data as ProfileData
 
 
+class Operator:
+    def execute(self, context):
+        IfcStore.execute_ifc_operator(self, context)
+        blenderbim.bim.handler.refresh_ui_data()
+        return {"FINISHED"}
+
+
 class AssignParameterizedProfile(bpy.types.Operator):
     bl_idname = "bim.assign_parameterized_profile"
     bl_label = "Assign Parameterized Profile"
@@ -59,6 +68,16 @@ class AssignParameterizedProfile(bpy.types.Operator):
         return {"FINISHED"}
 
 
+class AddDefaultMaterial(bpy.types.Operator, Operator):
+    bl_idname = "bim.add_default_material"
+    bl_label = "Add Default Material"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.add_default_material(tool.Ifc, tool.Material)
+        Data.load(IfcStore.get_file())
+
+
 class AddMaterial(bpy.types.Operator):
     bl_idname = "bim.add_material"
     bl_label = "Add Material"
@@ -112,6 +131,15 @@ class RemoveMaterial(bpy.types.Operator):
         return {"FINISHED"}
 
 
+class UnlinkMaterial(bpy.types.Operator, Operator):
+    bl_idname = "bim.unlink_material"
+    bl_label = "Unlink Material"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context):
+        core.unlink_material(tool.Ifc, obj=context.active_object.active_material)
+
+
 class AssignMaterial(bpy.types.Operator):
     bl_idname = "bim.assign_material"
     bl_label = "Assign Material"

src/blenderbim/blenderbim/bim/module/material/ui.py

@@ -36,9 +36,10 @@ class BIM_PT_material(Panel):
         return IfcStore.get_file() and context.active_object and context.active_object.active_material
 
     def draw(self, context):
-        row = self.layout.row()
+        row = self.layout.row(align=True)
         if bool(context.active_object.active_material.BIMObjectProperties.ifc_definition_id):
             row.operator("bim.remove_material", icon="X", text="Remove IFC Material")
+            row.operator("bim.unlink_material", icon="UNLINKED", text="")
         else:
             row.operator("bim.add_material", icon="ADD", text="Create IFC Material")
 
@@ -49,6 +50,7 @@ class BIM_PT_object_material(Panel):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
     bl_context = "object"
+    bl_parent_id = "BIM_PT_object_attributes_properties_and_relationships"
 
     @classmethod
     def poll(cls, context):
@@ -76,8 +78,9 @@ class BIM_PT_object_material(Panel):
         self.product_data = Data.products[self.oprops.ifc_definition_id]
 
         if not Data.materials:
-            row = self.layout.row()
+            row = self.layout.row(align=True)
             row.label(text="No Materials Available")
+            row.operator("bim.add_default_material", icon="ADD", text="")
             return
 
         if self.product_data:

src/blenderbim/blenderbim/bim/module/misc/__init__.py

@@ -0,0 +1,40 @@
+# 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/>.
+
+import bpy
+from . import ui, prop, operator
+
+classes = (
+    operator.DrawSystemArrows,
+    operator.GetConnectedSystemElements,
+    operator.ResizeToStorey,
+    operator.SetOverrideColour,
+    operator.SetViewportShadowFromSun,
+    operator.SnapSpacesTogether,
+    operator.SplitAlongEdge,
+    prop.BIMMiscProperties,
+    ui.BIM_PT_misc_utilities,
+)
+
+
+def register():
+    bpy.types.Scene.BIMMiscProperties = bpy.props.PointerProperty(type=prop.BIMMiscProperties)
+
+
+def unregister():
+    del bpy.types.Scene.BIMMiscProperties

src/blenderbim/blenderbim/bim/module/misc/operator.py

@@ -0,0 +1,262 @@
+# 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/>.
+
+import bpy
+import numpy as np
+import ifcopenshell
+import blenderbim.bim.handler
+import blenderbim.tool as tool
+import blenderbim.core.misc as core
+from blenderbim.bim.ifc import IfcStore
+from mathutils import Vector, Matrix, Euler
+
+
+class Operator:
+    def execute(self, context):
+        IfcStore.execute_ifc_operator(self, context)
+        blenderbim.bim.handler.refresh_ui_data()
+        return {"FINISHED"}
+
+
+class SetOverrideColour(bpy.types.Operator):
+    bl_idname = "bim.set_override_colour"
+    bl_label = "Set Override Colour"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects
+
+    def execute(self, context):
+        for obj in context.selected_objects:
+            obj.color = context.scene.BIMMiscProperties.override_colour
+        area = next(area for area in context.screen.areas if area.type == "VIEW_3D")
+        area.spaces[0].shading.color_type = "OBJECT"
+        return {"FINISHED"}
+
+
+class SetViewportShadowFromSun(bpy.types.Operator):
+    bl_idname = "bim.set_viewport_shadow_from_sun"
+    bl_label = "Set Viewport Shadow from Sun"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.active_object
+
+    def execute(self, context):
+        # Does this belong in the drawing module? Perhaps.
+        # The vector used for the light direction is a bit funny
+        mat = Matrix(((-1.0, 0.0, 0.0, 0.0), (0.0, 0, 1.0, 0.0), (-0.0, -1.0, 0, 0.0), (0.0, 0.0, 0.0, 1.0)))
+        context.scene.display.light_direction = mat.inverted() @ (
+            context.active_object.matrix_world.to_quaternion() @ Vector((0, 0, -1))
+        )
+        return {"FINISHED"}
+
+
+class SnapSpacesTogether(bpy.types.Operator):
+    bl_idname = "bim.snap_spaces_together"
+    bl_label = "Snap Spaces Together"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects
+
+    def execute(self, context):
+        threshold = 0.5
+        processed_polygons = set()
+        selected_mesh_objects = [o for o in context.selected_objects if o.type == "MESH"]
+        for obj in selected_mesh_objects:
+            for polygon in obj.data.polygons:
+                center = obj.matrix_world @ polygon.center
+                distance = None
+                for obj2 in selected_mesh_objects:
+                    if obj2 == obj:
+                        continue
+                    result = obj2.ray_cast(obj2.matrix_world.inverted() @ center, polygon.normal, distance=threshold)
+                    if not result[0]:
+                        continue
+                    hit = obj2.matrix_world @ result[1]
+                    distance = (hit - center).length / 2
+                    if distance < 0.01:
+                        distance = None
+                        break
+
+                    if (obj2.name, result[3]) in processed_polygons:
+                        distance *= 2
+                        continue
+
+                    offset = polygon.normal * distance * -1
+                    processed_polygons.add((obj2.name, result[3]))
+                    for v in obj2.data.polygons[result[3]].vertices:
+                        obj2.data.vertices[v].co += offset
+                    break
+                if distance:
+                    offset = polygon.normal * distance
+                    processed_polygons.add((obj.name, polygon.index))
+                    for v in polygon.vertices:
+                        obj.data.vertices[v].co += offset
+        return {"FINISHED"}
+
+
+class ResizeToStorey(bpy.types.Operator, Operator):
+    bl_idname = "bim.resize_to_storey"
+    bl_label = "Resize To Storey"
+    bl_options = {"REGISTER", "UNDO"}
+    total_storeys: bpy.props.IntProperty()
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects and tool.Ifc.get()
+
+    def _execute(self, context):
+        for obj in context.selected_objects:
+            core.resize_to_storey(tool.Misc, obj=obj, total_storeys=self.total_storeys)
+
+
+class SplitAlongEdge(bpy.types.Operator, Operator):
+    bl_idname = "bim.split_along_edge"
+    bl_label = "Split Along Edge"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects and tool.Ifc.get()
+
+    def _execute(self, context):
+        core.split_along_edge(tool.Misc, cutter=context.active_object, objs=context.selected_objects)
+
+
+class GetConnectedSystemElements(bpy.types.Operator, Operator):
+    bl_idname = "bim.get_connected_system_elements"
+    bl_label = "Get Connected System Elements"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects and tool.Ifc.get()
+
+    def _execute(self, context):
+        # Just dumped here for now before the system module gets properly planned
+        def pprint_element(e):
+            return "{} ({})".format(e.Name, e.GlobalId)
+
+        start = tool.Ifc.get_entity(bpy.context.active_object)
+
+        connected_elements = []
+
+        # Note: this code is for IFC2X3. IFC4 has a different approach.
+        print("Investigating element:", pprint_element(start))
+        for rel in start.HasPorts:
+            for rel2 in rel.RelatingPort.ConnectedTo:
+                print(
+                    "{} is connected as via {} ({}) TO {} ({}), contained in {}".format(
+                        pprint_element(start),
+                        rel.RelatingPort.FlowDirection,
+                        rel.RelatingPort.GlobalId,
+                        rel2.RelatedPort.FlowDirection,
+                        rel2.RelatedPort.GlobalId,
+                        [pprint_element(r.RelatedElement) for r in rel2.RelatedPort.ContainedIn],
+                    )
+                )
+                connected_elements.extend([r.RelatedElement for r in rel2.RelatedPort.ContainedIn])
+            for rel2 in rel.RelatingPort.ConnectedFrom:
+                print(
+                    "{} is connected as via {} ({}) FROM {} ({}), contained in {}".format(
+                        pprint_element(start),
+                        rel.RelatingPort.FlowDirection,
+                        rel.RelatingPort.GlobalId,
+                        rel2.RelatingPort.FlowDirection,
+                        rel2.RelatingPort.GlobalId,
+                        [pprint_element(r.RelatedElement) for r in rel2.RelatingPort.ContainedIn],
+                    )
+                )
+                connected_elements.extend([r.RelatedElement for r in rel2.RelatingPort.ContainedIn])
+
+        for element in connected_elements:
+            obj = tool.Ifc.get_object(element)
+            if obj:
+                obj.select_set(True)
+
+
+class DrawSystemArrows(bpy.types.Operator, Operator):
+    bl_idname = "bim.draw_system_arrows"
+    bl_label = "Draw System Arrows"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects and tool.Ifc.get()
+
+    def _execute(self, context):
+        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+        curve = bpy.data.objects.new("System Arrows", bpy.data.curves.new("System Arrows", "CURVE"))
+        curve.data.dimensions = "3D"
+        context.scene.collection.objects.link(curve)
+        for obj in bpy.context.selected_objects:
+            if not obj.BIMObjectProperties.ifc_definition_id:
+                continue
+            element = tool.Ifc.get_entity(obj)
+            sources = []
+            sinks = []
+            for rel in getattr(element, "HasPorts", []) or []:
+                if rel.RelatingPort.FlowDirection == "SOURCE":
+                    sources.append(
+                        self.get_absolute_matrix(
+                            ifcopenshell.util.placement.get_local_placement(rel.RelatingPort.ObjectPlacement)
+                        )
+                    )
+                elif rel.RelatingPort.FlowDirection == "SINK":
+                    sinks.append(
+                        self.get_absolute_matrix(
+                            ifcopenshell.util.placement.get_local_placement(rel.RelatingPort.ObjectPlacement)
+                        )
+                    )
+                else:
+                    sources.append(
+                        self.get_absolute_matrix(
+                            ifcopenshell.util.placement.get_local_placement(rel.RelatingPort.ObjectPlacement)
+                        )
+                    )
+                    sinks.append(
+                        self.get_absolute_matrix(
+                            ifcopenshell.util.placement.get_local_placement(rel.RelatingPort.ObjectPlacement)
+                        )
+                    )
+            for sink in sinks:
+                for source in sources:
+                    polyline = curve.data.splines.new("POLY")
+                    polyline.points.add(1)
+                    polyline.points[0].co = (Matrix(sink).translation * unit_scale).to_4d()
+                    polyline.points[1].co = (Matrix(source).translation * unit_scale).to_4d()
+
+    def get_absolute_matrix(self, matrix):
+        props = bpy.context.scene.BIMGeoreferenceProperties
+        if props.has_blender_offset:
+            matrix = np.array(
+                ifcopenshell.util.geolocation.global2local(
+                    matrix,
+                    float(props.blender_eastings),
+                    float(props.blender_northings),
+                    float(props.blender_orthogonal_height),
+                    float(props.blender_x_axis_abscissa),
+                    float(props.blender_x_axis_ordinate),
+                )
+            )
+        return matrix

src/blenderbim/blenderbim/bim/module/misc/prop.py

@@ -0,0 +1,38 @@
+# 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/>.
+
+import bpy
+from blenderbim.bim.prop import StrProperty, Attribute
+from bpy.types import PropertyGroup
+from bpy.props import (
+    PointerProperty,
+    StringProperty,
+    EnumProperty,
+    BoolProperty,
+    IntProperty,
+    FloatProperty,
+    FloatVectorProperty,
+    CollectionProperty,
+)
+
+
+class BIMMiscProperties(PropertyGroup):
+    total_storeys: IntProperty(name="Total Storeys", default=1)
+    override_colour: FloatVectorProperty(
+        name="Override Colour", subtype="COLOR", default=(1, 0, 0, 1), min=0.0, max=1.0, size=4
+    )

src/blenderbim/blenderbim/bim/module/misc/ui.py

@@ -0,0 +1,49 @@
+# 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/>.
+
+import bpy
+
+
+class BIM_PT_misc_utilities(bpy.types.Panel):
+    bl_idname = "BIM_PT_misc_utilities"
+    bl_label = "Miscellaneous"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "VIEW_3D"
+    bl_region_type = "UI"
+    bl_category = "BlenderBIM"
+
+    def draw(self, context):
+        layout = self.layout
+        props = context.scene.BIMMiscProperties
+
+        row = layout.split(factor=0.2, align=True)
+        row.prop(props, "override_colour", text="")
+        row.operator("bim.set_override_colour")
+        row = layout.row()
+        row.operator("bim.set_viewport_shadow_from_sun")
+        row = layout.row()
+        row.operator("bim.snap_spaces_together")
+        row = layout.split(factor=0.2, align=True)
+        row.prop(props, "total_storeys", text="")
+        row.operator("bim.resize_to_storey").total_storeys = props.total_storeys
+        row = layout.row()
+        row.operator("bim.split_along_edge")
+        row = layout.row()
+        row.operator("bim.get_connected_system_elements")
+        row = layout.row()
+        row.operator("bim.draw_system_arrows")

src/blenderbim/blenderbim/bim/module/model/__init__.py

@@ -17,7 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
-from . import handler, prop, ui, grid, product, wall, slab, stair, door, window, opening, pie, workspace
+from . import handler, prop, ui, grid, product, wall, slab, stair, opening, pie, workspace
 
 classes = (
     product.AddEmptyType,
@@ -34,11 +34,8 @@ classes = (
     prop.BIMModelProperties,
     ui.BIM_PT_authoring,
     ui.BIM_PT_authoring_architectural,
-    ui.BIM_PT_misc_utilities,
     grid.BIM_OT_add_object,
     stair.BIM_OT_add_object,
-    door.BIM_OT_add_object,
-    window.BIM_OT_add_object,
     opening.BIM_OT_add_object,
     pie.OpenPieClass,
     pie.PieUpdateContainer,
@@ -56,8 +53,6 @@ def register():
     bpy.types.Scene.BIMModelProperties = bpy.props.PointerProperty(type=prop.BIMModelProperties)
     bpy.types.VIEW3D_MT_mesh_add.append(grid.add_object_button)
     bpy.types.VIEW3D_MT_mesh_add.append(stair.add_object_button)
-    bpy.types.VIEW3D_MT_mesh_add.append(door.add_object_button)
-    bpy.types.VIEW3D_MT_mesh_add.append(window.add_object_button)
     bpy.types.VIEW3D_MT_mesh_add.append(opening.add_object_button)
     bpy.types.VIEW3D_MT_add.append(product.add_empty_type_button)
     bpy.app.handlers.load_post.append(handler.load_post)
@@ -76,8 +71,6 @@ def unregister():
     bpy.app.handlers.load_post.remove(handler.load_post)
     bpy.types.VIEW3D_MT_mesh_add.remove(grid.add_object_button)
     bpy.types.VIEW3D_MT_mesh_add.remove(stair.add_object_button)
-    bpy.types.VIEW3D_MT_mesh_add.remove(door.add_object_button)
-    bpy.types.VIEW3D_MT_mesh_add.remove(window.add_object_button)
     bpy.types.VIEW3D_MT_mesh_add.remove(opening.add_object_button)
     bpy.types.VIEW3D_MT_add.remove(product.add_empty_type_button)
     wm = bpy.context.window_manager

src/blenderbim/blenderbim/bim/module/model/data.py

@@ -0,0 +1,59 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 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/>.
+
+import bpy
+import blenderbim.tool as tool
+
+
+def refresh():
+    AuthoringData.is_loaded = False
+
+
+class AuthoringData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data = {
+            "ifc_classes": cls.ifc_classes(),
+            "relating_types": cls.relating_types(),
+        }
+
+    @classmethod
+    def ifc_classes(cls):
+        results = []
+        classes = {e.is_a() for e in tool.Ifc.get().by_type("IfcElementType")}
+        results.extend([(c, c, "") for c in sorted(classes)])
+        return results
+
+    @classmethod
+    def relating_types(cls):
+        ifc_classes = cls.ifc_classes()
+        if not ifc_classes:
+            return []
+        results = []
+        ifc_class = bpy.context.scene.BIMModelProperties.ifc_class
+        if not ifc_class and ifc_classes:
+            ifc_class = ifc_classes[0][0]
+        if ifc_class:
+            elements = [(str(e.id()), e.Name, "") for e in tool.Ifc.get().by_type(ifc_class)]
+            results.extend(sorted(elements, key=lambda s: s[1]))
+            return results
+        return []

src/blenderbim/blenderbim/bim/module/model/door.py

@@ -1,226 +0,0 @@
-# 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/>.
-
-import bpy
-import math
-import ifcopenshell
-from bpy.types import Operator
-from bpy.props import FloatProperty
-from mathutils import Vector
-from blenderbim.bim.ifc import IfcStore
-
-
-def add_object(self, context):
-    guid = ifcopenshell.guid.new()
-    leaf_width = self.overall_width - 0.045 - 0.045
-    # TODO reimplement 2D. See #1222.
-    # verts = [
-    #    # Left lining
-    #    Vector((0, 0, 0)),
-    #    Vector((0, self.depth, 0)),
-    #    Vector((0.04, self.depth, 0)),
-    #    Vector((0.04, self.depth - 0.04, 0)),
-    #    Vector((0.065, self.depth - 0.04, 0)),
-    #    Vector((0.065, 0, 0)),
-    #    # Right lining
-    #    Vector((self.overall_width, 0, 0)),
-    #    Vector((self.overall_width, self.depth, 0)),
-    #    Vector((self.overall_width - 0.04, self.depth, 0)),
-    #    Vector((self.overall_width - 0.04, self.depth - 0.04, 0)),
-    #    Vector((self.overall_width - 0.065, self.depth - 0.04, 0)),
-    #    Vector((self.overall_width - 0.065, 0, 0)),
-    #    # Door panel
-    #    Vector((0.045, self.depth, 0)),
-    #    Vector((0.045, self.depth + leaf_width, 0)),
-    #    Vector((0.080, self.depth + leaf_width, 0)),
-    #    Vector((0.080, self.depth, 0)),
-    # ]
-    # edges = [
-    #    [0, 1],
-    #    [1, 2],
-    #    [2, 3],
-    #    [3, 4],
-    #    [4, 5],  # Left lining
-    #    [6, 7],
-    #    [7, 8],
-    #    [8, 9],
-    #    [9, 10],
-    #    [10, 11],  # Right lining
-    #    [12, 13],
-    #    [13, 14],
-    #    [14, 15],
-    #    [15, 12],  # Door panel
-    # ]
-    ## Door swing
-    # for i in range(0, 9):
-    #    verts.append(
-    #        Vector(
-    #            (
-    #                0.045 + (leaf_width * math.cos((math.pi / 2) / 8 * i)),
-    #                self.depth + (leaf_width * math.sin((math.pi / 2) / 8 * i)),
-    #                0,
-    #            )
-    #        )
-    #    )
-    #    edges.append([16 + i, 17 + i])
-    # edges.pop()
-    # faces = []
-    # mesh = bpy.data.meshes.new(name="Plan/Annotation/PLAN_VIEW/" + guid)
-    # mesh.use_fake_user = True
-    # mesh.from_pydata(verts, edges, faces)
-
-    # Door lining profile
-    verts = [
-        Vector((0, 0, 0)),
-        Vector((0, -self.depth, 0)),
-        Vector((0.04, -self.depth, 0)),
-        Vector((0.04, -self.depth + 0.04, 0)),
-        Vector((0.065, -self.depth + 0.04, 0)),
-        Vector((0.065, 0, 0)),
-    ]
-    edges = []
-    faces = [[0, 1, 2, 3, 4, 5]]
-    mesh = bpy.data.meshes.new(name="Dumb Door Profile")
-    mesh.from_pydata(verts, edges, faces)
-    obj = bpy.data.objects.new("Door Profile", mesh)
-
-    context.view_layer.active_layer_collection.collection.objects.link(obj)
-    context.view_layer.objects.active = obj
-    obj.select_set(True)
-    bpy.ops.object.convert(target="CURVE")
-
-    # Door lining sweep
-    verts = [
-        Vector((0, 0, 0)),
-        Vector((0, self.overall_height, 0)),
-        Vector((self.overall_width, self.overall_height, 0)),
-        Vector((self.overall_width, 0, 0)),
-    ]
-    edges = [[0, 1], [1, 2], [2, 3]]
-    faces = []
-    mesh = bpy.data.meshes.new(name="Dumb Door")
-    mesh.from_pydata(verts, edges, faces)
-    obj2 = bpy.data.objects.new("Door", mesh)
-
-    context.view_layer.active_layer_collection.collection.objects.link(obj2)
-    context.view_layer.objects.active = obj2
-    obj2.select_set(True)
-    bpy.ops.object.convert(target="CURVE")
-
-    obj2.data.dimensions = "2D"
-    obj2.data.bevel_mode = "OBJECT"
-    obj2.data.bevel_object = obj
-
-    obj2.rotation_euler[0] = math.pi / 2
-    bpy.ops.object.convert(target="MESH")
-    bpy.ops.object.transform_apply(location=False)
-    bpy.data.objects.remove(obj, do_unlink=True)
-
-    # Door panel
-    verts = [
-        Vector((0.045, self.depth, 0)),
-        Vector((0.045, self.depth - 0.035, 0)),
-        Vector((self.overall_width - 0.045, self.depth - 0.035, 0)),
-        Vector((self.overall_width - 0.045, self.depth, 0)),
-    ]
-    edges = []
-    faces = [[0, 1, 2, 3]]
-    mesh = bpy.data.meshes.new(name="Dumb Door Panel")
-    mesh.from_pydata(verts, edges, faces)
-    obj3 = bpy.data.objects.new("Door Panel", mesh)
-    modifier = obj3.modifiers.new("Panel Height", "SOLIDIFY")
-    modifier.offset = 1
-    modifier.thickness = self.overall_height - 0.045
-
-    context.view_layer.active_layer_collection.collection.objects.link(obj3)
-    context.view_layer.objects.active = obj3
-    obj3.select_set(True)
-    bpy.ops.object.convert(target="MESH")
-
-    ctx = context.copy()
-    ctx["active_object"] = obj2
-    ctx["selected_editable_objects"] = [obj2, obj3]
-    bpy.ops.object.join(ctx)
-
-    # Door Opening
-    verts = [
-        Vector((0, -0.1, -0.1)),
-        Vector((0, self.depth + 0.1, -0.1)),
-        Vector((self.overall_width, self.depth + 0.1, -0.1)),
-        Vector((self.overall_width, -0.1, -0.1)),
-    ]
-    edges = []
-    faces = [[0, 1, 2, 3]]
-    mesh = bpy.data.meshes.new(name="Dumb Door Opening")
-    mesh.from_pydata(verts, edges, faces)
-    obj4 = bpy.data.objects.new("Door Opening", mesh)
-    modifier = obj4.modifiers.new("Panel Height", "SOLIDIFY")
-    modifier.offset = -1
-    modifier.thickness = self.overall_height + 0.1
-
-    context.view_layer.active_layer_collection.collection.objects.link(obj4)
-    context.view_layer.objects.active = obj4
-    obj4.select_set(True)
-    bpy.ops.object.convert(target="MESH")
-
-    obj4.display_type = "WIRE"
-    obj4.parent = obj2
-    obj4.matrix_parent_inverse = obj2.matrix_world.inverted()
-    obj4.hide_render = True
-    obj4.name = "Door Opening"
-
-    obj2.name = "Door"
-
-    if IfcStore.get_file():
-        bpy.ops.bim.assign_class(obj=obj2.name, ifc_class="IfcDoor")
-
-    obj2.location = context.scene.cursor.location
-    # obj2.data.name = "Model/Body/MODEL_VIEW/" + guid
-    # obj2.data.use_fake_user = True
-
-    # TODO: reimplement. See #1222.
-    # rep = obj2.BIMObjectProperties.representation_contexts.add()
-    # rep.context = "Model"
-    # rep.name = "Body"
-    # rep.target_view = "MODEL_VIEW"
-
-    # rep = obj2.BIMObjectProperties.representation_contexts.add()
-    # rep.context = "Plan"
-    # rep.name = "Annotation"
-    # rep.target_view = "PLAN_VIEW"
-
-
-class BIM_OT_add_object(Operator):
-    bl_idname = "mesh.add_door"
-    bl_label = "Dumb Door"
-    bl_options = {"REGISTER", "UNDO"}
-
-    overall_width: FloatProperty(name="Overall Width", default=0.85)
-    overall_height: FloatProperty(name="Overall Height", default=2.1)
-    depth: FloatProperty(name="Depth", default=0.2)
-
-    def execute(self, context):
-        return IfcStore.execute_ifc_operator(self, context)
-
-    def _execute(self, context):
-        add_object(self, context)
-        return {"FINISHED"}
-
-
-def add_object_button(self, context):
-    self.layout.operator(BIM_OT_add_object.bl_idname, icon="PLUGIN")

src/blenderbim/blenderbim/bim/module/model/grid.py

@@ -18,6 +18,8 @@
 
 import bpy
 import ifcopenshell.api
+import blenderbim.core.spatial
+import blenderbim.tool as tool
 from bpy.types import Operator
 from bpy.props import FloatProperty, IntProperty
 from mathutils import Vector
@@ -51,8 +53,8 @@ def add_object(self, context):
         if has_site_collection:
             site_obj = bpy.data.objects.get(grandchild.name)
             if site_obj and site_obj.BIMObjectProperties.ifc_definition_id:
-                bpy.ops.bim.assign_container(
-                    relating_structure=site_obj.BIMObjectProperties.ifc_definition_id, related_element=obj.name
+                blenderbim.core.spatial.assign_container(
+                    tool.Ifc, tool.Collector, tool.Spatial, structure_obj=site_obj, element_obj=obj
                 )
 
     axes_collection = bpy.data.collections.new("UAxes")

src/blenderbim/blenderbim/bim/module/model/handler.py

@@ -60,41 +60,32 @@ def load_post(*args):
     IfcStore.add_element_listener(slab.element_listener)
     IfcStore.add_element_listener(profile.element_listener)
 
-    ifcopenshell.api.add_pre_listener(
-        "geometry.add_representation", "BlenderBIM.DumbWall.EnsureSolid", wall.ensure_solid
-    )
     ifcopenshell.api.add_post_listener(
         "geometry.add_representation", "BlenderBIM.DumbWall.GenerateAxis", wall.generate_axis
     )
     ifcopenshell.api.add_post_listener(
         "geometry.add_representation", "BlenderBIM.DumbWall.CalculateQuantities", wall.calculate_quantities
     )
-    ifcopenshell.api.add_pre_listener(
+    ifcopenshell.api.add_post_listener(
         "material.edit_layer", "BlenderBIM.DumbWall.RegenerateFromLayer", wall.DumbWallPlaner().regenerate_from_layer
     )
-    ifcopenshell.api.add_pre_listener(
+    ifcopenshell.api.add_post_listener(
         "type.assign_type", "BlenderBIM.DumbWall.RegenerateFromType", wall.DumbWallPlaner().regenerate_from_type
     )
 
-    ifcopenshell.api.add_pre_listener(
-        "geometry.add_representation", "BlenderBIM.DumbSlab.EnsureSolid", slab.ensure_solid
-    )
     ifcopenshell.api.add_post_listener(
         "geometry.add_representation", "BlenderBIM.DumbSlab.GenerateFootprint", slab.generate_footprint
     )
     ifcopenshell.api.add_post_listener(
         "geometry.add_representation", "BlenderBIM.DumbSlab.CalculateQuantities", slab.calculate_quantities
     )
-    ifcopenshell.api.add_pre_listener(
+    ifcopenshell.api.add_post_listener(
         "material.edit_layer", "BlenderBIM.DumbSlab.RegenerateFromLayer", slab.DumbSlabPlaner().regenerate_from_layer
     )
-    ifcopenshell.api.add_pre_listener(
+    ifcopenshell.api.add_post_listener(
         "type.assign_type", "BlenderBIM.DumbSlab.RegenerateFromType", slab.DumbSlabPlaner().regenerate_from_type
     )
 
-    ifcopenshell.api.add_pre_listener(
-        "geometry.add_representation", "BlenderBIM.DumbProfile.EnsureSolid", profile.ensure_solid
-    )
     ifcopenshell.api.add_pre_listener(
         "material.edit_profile",
         "BlenderBIM.DumbProfile.SyncObjectFromProfile",

src/blenderbim/blenderbim/bim/module/model/opening.py

@@ -21,6 +21,8 @@ import bmesh
 import blenderbim.bim.handler
 import ifcopenshell
 import ifcopenshell.util.representation
+import blenderbim.tool as tool
+import blenderbim.core.geometry
 from blenderbim.bim.ifc import IfcStore
 from math import pi
 from mathutils import Vector
@@ -57,12 +59,14 @@ def mode_callback(obj, data):
             )
             if not representation:
                 continue
-            bpy.ops.bim.switch_representation(
-                obj=building_element_obj.name,
-                should_switch_all_meshes=True,
+            blenderbim.core.geometry.switch_representation(
+                tool.Geometry,
+                obj=building_element_obj,
+                representation=representation,
                 should_reload=True,
-                ifc_definition_id=representation.id(),
-                disable_opening_subtractions=True,
+                enable_dynamic_voids=True,
+                is_global=True,
+                should_sync_changes_first=False,
             )
         IfcStore.edited_objs.add(obj)
         bm = bmesh.from_edit_mesh(obj.data)

src/blenderbim/blenderbim/bim/module/model/pie.py

@@ -17,6 +17,8 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
+import blenderbim.tool as tool
+import blenderbim.core.spatial
 from blenderbim.bim.ifc import IfcStore
 
 
@@ -67,8 +69,8 @@ class PieUpdateContainer(bpy.types.Operator):
             for collection in obj.users_collection:
                 spatial_obj = bpy.data.objects.get(collection.name)
                 if spatial_obj and spatial_obj.BIMObjectProperties.ifc_definition_id:
-                    bpy.ops.bim.assign_container(
-                        relating_structure=spatial_obj.BIMObjectProperties.ifc_definition_id, related_element=obj.name
+                    blenderbim.core.spatial.assign_container(
+                        tool.Ifc, tool.Collector, tool.Spatial, structure_obj=spatial_obj, element_obj=obj
                     )
                     break
         return {"FINISHED"}
@@ -80,7 +82,7 @@ class VIEW3D_MT_PIE_bim(bpy.types.Menu):
     def draw(self, context):
         pie = self.layout.menu_pie()
         pie.operator("bim.edit_object_placement")
-        pie.operator("bim.update_representation")
+        pie.operator("bim.update_representation").ifc_representation_class = ""
         pie.operator("bim.pie_add_opening")
         pie.operator("bim.pie_update_container")
         pie.operator("bim.open_pie_class", text="Assign IFC Class")

src/blenderbim/blenderbim/bim/module/model/product.py

@@ -22,6 +22,9 @@ import ifcopenshell
 import ifcopenshell.api
 import ifcopenshell.util.element
 import ifcopenshell.util.representation
+import blenderbim.tool as tool
+import blenderbim.core.type
+import blenderbim.core.geometry
 from . import wall, slab, profile
 from blenderbim.bim.ifc import IfcStore
 from ifcopenshell.api.pset.data import Data as PsetData
@@ -36,14 +39,7 @@ class AddEmptyType(bpy.types.Operator, AddObjectHelper):
 
     def execute(self, context):
         obj = bpy.data.objects.new("TYPEX", None)
-        for project in [c for c in context.view_layer.layer_collection.children if "IfcProject" in c.name]:
-            if not [c for c in project.children if "Types" in c.name]:
-                types = bpy.data.collections.new("Types")
-                project.collection.children.link(types)
-            for collection in [c for c in project.children if "Types" in c.name]:
-                collection.collection.objects.link(obj)
-                break
-            break
+        context.scene.collection.objects.link(obj)
         context.scene.BIMRootProperties.ifc_product = "IfcElementType"
         bpy.ops.object.select_all(action="DESELECT")
         context.view_layer.objects.active = obj
@@ -59,6 +55,7 @@ class AddTypeInstance(bpy.types.Operator):
     bl_idname = "bim.add_type_instance"
     bl_label = "Add Type Instance"
     bl_options = {"REGISTER", "UNDO"}
+    bl_description = "Add the selected Type Instance to the model"
     ifc_class: bpy.props.StringProperty()
     relating_type: bpy.props.IntProperty()
 
@@ -66,9 +63,9 @@ class AddTypeInstance(bpy.types.Operator):
         return IfcStore.execute_ifc_operator(self, context)
 
     def _execute(self, context):
-        tprops = context.scene.BIMTypeProperties
-        ifc_class = self.ifc_class or tprops.ifc_class
-        relating_type_id = self.relating_type or tprops.relating_type
+        props = context.scene.BIMModelProperties
+        ifc_class = self.ifc_class or props.ifc_class
+        relating_type_id = self.relating_type or props.relating_type
 
         if not ifc_class or not relating_type_id:
             return {"FINISHED"}
@@ -117,7 +114,12 @@ class AddTypeInstance(bpy.types.Operator):
         collection.objects.link(obj)
         collection_obj = bpy.data.objects.get(collection.name)
         bpy.ops.bim.assign_class(obj=obj.name, ifc_class=instance_class)
-        bpy.ops.bim.assign_type(relating_type=int(tprops.relating_type), related_object=obj.name)
+        blenderbim.core.type.assign_type(
+            tool.Ifc,
+            tool.Type,
+            element=tool.Ifc.get_entity(obj),
+            type=tool.Ifc.get().by_id(int(props.relating_type)),
+        )
 
         if building_obj:
             if instance_class in ["IfcWindow", "IfcDoor"]:
@@ -229,12 +231,14 @@ class DynamicallyVoidProduct(bpy.types.Operator):
         was_edit_mode = obj.mode == "EDIT"
         if was_edit_mode:
             bpy.ops.object.mode_set(mode="OBJECT")
-        bpy.ops.bim.switch_representation(
-            obj=obj.name,
-            should_switch_all_meshes=True,
+        blenderbim.core.geometry.switch_representation(
+            tool.Geometry,
+            obj=obj,
+            representation=representation,
             should_reload=True,
-            ifc_definition_id=representation.id(),
-            disable_opening_subtractions=True,
+            enable_dynamic_voids=True,
+            is_global=True,
+            should_sync_changes_first=False,
         )
         if was_edit_mode:
             bpy.ops.object.mode_set(mode="EDIT")
@@ -252,7 +256,7 @@ def generate_box(usecase_path, ifc_file, settings):
     old_box = ifcopenshell.util.representation.get_representation(product, "Model", "Box", "MODEL_VIEW")
     if settings["context"].ContextType == "Model" and getattr(settings["context"], "ContextIdentifier") == "Body":
         if old_box:
-            bpy.ops.bim.remove_representation(representation_id=old_box.id(), obj=obj.name)
+            blenderbim.core.geometry.remove_representation(tool.Ifc, tool.Geometry, obj=obj, representation=old_box)
 
         new_settings = settings.copy()
         new_settings["context"] = box_context
@@ -286,16 +290,22 @@ def regenerate_profile_usage(usecase_path, ifc_file, settings):
             continue
         representation = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
         if representation:
-            bpy.ops.bim.switch_representation(
-                obj=obj.name, ifc_definition_id=representation.id(), should_reload=True, should_switch_all_meshes=True
+            blenderbim.core.geometry.switch_representation(
+                tool.Geometry,
+                obj=obj,
+                representation=representation,
+                should_reload=True,
+                enable_dynamic_voids=True,
+                is_global=True,
+                should_sync_changes_first=False,
             )
 
 
 def ensure_material_assigned(usecase_path, ifc_file, settings):
     if usecase_path == "material.assign_material":
-        if not settings.get("Material", None):
+        if not settings.get("material", None):
             return
-        elements = [self.settings["product"]]
+        elements = [settings["product"]]
     else:
         elements = []
         for rel in ifc_file.by_type("IfcRelAssociatesMaterial"):
@@ -321,4 +331,7 @@ def ensure_material_assigned(usecase_path, ifc_file, settings):
         if material[0].id() in object_material_ids:
             continue
 
+        if len(obj.data.materials) == 1:
+            obj.data.materials.clear()
+
         obj.data.materials.append(IfcStore.get_element(material[0].id()))

src/blenderbim/blenderbim/bim/module/model/profile.py

@@ -17,14 +17,17 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
-import bmesh
 import math
+import bmesh
+import mathutils.geometry
 import ifcopenshell
 import ifcopenshell.util.type
 import ifcopenshell.util.unit
 import ifcopenshell.util.element
-import mathutils.geometry
 import blenderbim.bim.handler
+import blenderbim.tool as tool
+import blenderbim.core.type
+import blenderbim.core.geometry
 from blenderbim.bim.ifc import IfcStore
 from math import pi, degrees, inf
 from mathutils import Vector, Matrix
@@ -89,19 +92,6 @@ def mode_callback(obj, data):
             obj.matrix_world.translation = new_origin
 
 
-def ensure_solid(usecase_path, ifc_file, settings):
-    product = ifc_file.by_id(settings["blender_object"].BIMObjectProperties.ifc_definition_id)
-    parametric = ifcopenshell.util.element.get_psets(product).get("EPset_Parametric")
-    if not parametric or parametric["Engine"] != "BlenderBIM.DumbProfile":
-        return
-    material = ifcopenshell.util.element.get_material(product)
-    if material and material.is_a("IfcMaterialProfileSetUsage"):
-        settings["profile_set_usage"] = material
-    else:
-        return
-    settings["ifc_representation_class"] = "IfcExtrudedAreaSolid/IfcMaterialProfileSetUsage"
-
-
 class DumbProfileGenerator:
     def __init__(self, relating_type):
         self.relating_type = relating_type
@@ -167,18 +157,8 @@ class DumbProfileGenerator:
             obj.rotation_euler[2] = math.pi / 2
 
         element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
-        bpy.ops.bim.assign_type(relating_type=self.relating_type.id(), related_object=obj.name)
+        blenderbim.core.type.assign_type(tool.Ifc, tool.Type, element=tool.Ifc.get_entity(obj), type=self.relating_type)
         profile_set_usage = ifcopenshell.util.element.get_material(element)
-        bpy.ops.bim.add_representation(
-            obj=obj.name,
-            context_id=ifcopenshell.util.representation.get_context(self.file, "Model", "Body", "MODEL_VIEW").id(),
-            ifc_representation_class="IfcExtrudedAreaSolid/IfcMaterialProfileSetUsage",
-            profile_set_usage=profile_set_usage.id(),
-        )
-        representation = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
-        bpy.ops.bim.switch_representation(
-            obj=obj.name, ifc_definition_id=representation.id(), should_reload=True, should_switch_all_meshes=True
-        )
         pset = ifcopenshell.api.run("pset.add_pset", self.file, product=element, name="EPset_Parametric")
         ifcopenshell.api.run("pset.edit_pset", self.file, pset=pset, properties={"Engine": "BlenderBIM.DumbProfile"})
         MaterialData.load(self.file)
@@ -233,8 +213,14 @@ class DumbProfileRegenerator:
             return
         representation = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
         if representation:
-            bpy.ops.bim.switch_representation(
-                obj=obj.name, ifc_definition_id=representation.id(), should_reload=True, should_switch_all_meshes=True
+            blenderbim.core.geometry.switch_representation(
+                tool.Geometry,
+                obj=obj,
+                representation=representation,
+                should_reload=True,
+                enable_dynamic_voids=True,
+                is_global=True,
+                should_sync_changes_first=False,
             )
 
     def sync_object(self, element):