mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-10-02 21:12:07 +00:00
Dion Moult
1695 lines
77 KiB
Python
1695 lines
77 KiB
Python
import ifcopenshell
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import ifcopenshell.geom
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import bpy
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import bmesh
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import os
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import shutil
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import threading
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import json
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import time
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import mathutils
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import math
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import multiprocessing
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import zipfile
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import tempfile
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from pathlib import Path
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from . import helper
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from . import schema
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from . import ifc
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class FileCopy(threading.Thread):
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def __init__(self, file_path, destination):
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threading.Thread.__init__(self)
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self.file_path = file_path
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self.destination = destination
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def run(self):
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shutil.copy(self.file_path, self.destination)
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class MaterialCreator():
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def __init__(self, ifc_import_settings):
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self.mesh = None
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self.materials = {}
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self.parsed_meshes = []
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self.ifc_import_settings = ifc_import_settings
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def create(self, element, obj, mesh):
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self.obj = obj
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self.mesh = mesh
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if (hasattr(element, 'Representation') and not element.Representation) \
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or (hasattr(element, 'RepresentationMaps') and not element.RepresentationMaps):
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return
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if self.ifc_import_settings.should_treat_styled_item_as_material \
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and self.mesh.name in self.parsed_meshes:
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return
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self.parse_material(element)
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self.parsed_meshes.append(self.mesh.name)
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if self.parse_representations(element):
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self.assign_material_slots_to_faces(obj, self.mesh)
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self.parsed_meshes.append(self.mesh.name)
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def parse_representations(self, element):
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has_parsed = False
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if hasattr(element, 'Representation'):
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for representation in element.Representation.Representations:
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if self.parse_representation(representation):
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has_parsed = True
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elif hasattr(element, 'RepresentationMaps'):
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for representation_map in element.RepresentationMaps:
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if self.parse_representation(representation_map.MappedRepresentation):
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has_parsed = True
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return has_parsed
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def parse_representation(self, representation):
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has_parsed = False
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representation_items = self.resolve_mapped_representation_items(representation)
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for item in representation_items:
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if self.parse_representation_item(item):
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has_parsed = True
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return has_parsed
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def parse_representation_item(self, item):
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if not item.StyledByItem:
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return
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styled_item = item.StyledByItem[0]
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material_name = self.get_material_name(styled_item)
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if material_name not in self.materials:
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material = bpy.data.materials.get(material_name)
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if material:
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self.materials[material_name] = material
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else:
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self.materials[material_name] = bpy.data.materials.new(material_name)
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self.parse_styled_item(styled_item, self.materials[material_name])
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if self.ifc_import_settings.should_treat_styled_item_as_material:
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# Revit workaround: since Revit/DDS-CAD exports all material
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# assignments as individual object styled items. Treating them as
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# reusable materials makes things much more efficient in Blender.
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self.assign_material_to_mesh(self.materials[material_name])
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else:
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# Proper behaviour
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self.assign_material_to_mesh(self.materials[material_name], is_styled_item=True)
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return True
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def assign_material_slots_to_faces(self, obj, mesh):
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if 'ios_materials' not in mesh or not mesh['ios_materials']:
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return
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slots = [s.name for s in obj.material_slots]
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for index, polygon in enumerate(mesh.polygons):
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material_id = mesh['ios_material_ids'][index]
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# Magic number 999999 represents no material, until this has a better approach
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if material_id == 999999:
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continue
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material = mesh['ios_materials'][material_id]
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if 'surface-style-' in material:
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material = material.split('-')[2]
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try:
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polygon.material_index = slots.index(material)
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except:
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self.ifc_import_settings.logger.error(
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'Failed to assign material {} to object {}'.format(material, obj.name))
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def parse_material(self, element):
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for association in element.HasAssociations:
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if association.is_a('IfcRelAssociatesMaterial'):
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material_select = association.RelatingMaterial
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if material_select.is_a('IfcMaterialDefinition'):
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self.create_definition(material_select)
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elif material_select.is_a('IfcMaterialLayerSetUsage'):
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self.create_layer_set_usage(material_select)
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def create_layer_set_usage(self, usage):
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# TODO import rest of the layer set usage data
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self.create_definition(usage.ForLayerSet)
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def create_definition(self, material):
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if material.is_a('IfcMaterial'):
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self.create_single(material)
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elif material.is_a('IfcMaterialLayerSet'):
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self.create_layer_set(material)
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def create_single(self, material):
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if material.Name not in self.materials:
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self.create_new_single(material)
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return self.assign_material_to_mesh(self.materials[material.Name])
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def create_layer_set(self, layer_set):
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for layer in layer_set.MaterialLayers:
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if layer.Material:
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if layer.Material.Name not in self.materials:
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# TODO import rest of the layer set data
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self.create_new_single(layer.Material)
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self.assign_material_to_mesh(self.materials[layer.Material.Name])
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def create_new_single(self, material):
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self.materials[material.Name] = bpy.data.materials.new(material.Name)
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if not material.HasRepresentation \
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or not material.HasRepresentation[0].Representations:
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return
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for representation in material.HasRepresentation[0].Representations:
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if not representation.Items:
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continue
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for item in representation.Items:
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if not item.is_a('IfcStyledItem'):
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continue
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self.parse_styled_item(item, self.materials[material.Name])
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def get_material_name(self, styled_item):
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if styled_item.Name:
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return styled_item.Name
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styled_item = self.resolve_presentation_style_assignment(styled_item)
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for style in styled_item.Styles:
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if not style.is_a('IfcSurfaceStyle'):
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continue
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if style.Name:
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return style.Name
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return str(style.id())
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return str(styled_item.id())
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def parse_styled_item(self, styled_item, material):
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styled_item = self.resolve_presentation_style_assignment(styled_item)
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for style in styled_item.Styles:
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if not style.is_a('IfcSurfaceStyle'):
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continue
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external_style = None
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for surface_style in style.Styles:
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if surface_style.is_a('IfcSurfaceStyleShading'):
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alpha = 1.
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# Transparency was added in IFC4
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if hasattr(surface_style, 'Transparency') \
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and surface_style.Transparency:
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alpha = 1 - surface_style.Transparency
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material.diffuse_color = (
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surface_style.SurfaceColour.Red,
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surface_style.SurfaceColour.Green,
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surface_style.SurfaceColour.Blue,
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alpha)
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elif surface_style.is_a('IfcExternallyDefinedSurfaceStyle'):
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external_style = surface_style
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if external_style:
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material.BIMMaterialProperties.is_external = True
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material.BIMMaterialProperties.location = external_style.Location
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material.BIMMaterialProperties.identification = external_style.Identification
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material.BIMMaterialProperties.name = external_style.Name
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# IfcPresentationStyleAssignment is deprecated as of IFC4
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# However it is still widely used thanks to Revit :(
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def resolve_presentation_style_assignment(self, styled_item):
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for style in styled_item.Styles:
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if style.is_a('IfcPresentationStyleAssignment'):
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return style
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return styled_item
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def resolve_mapped_representation_items(self, representation):
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items = []
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for item in representation.Items:
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if item.is_a('IfcMappedItem'):
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items.extend(item.MappingSource.MappedRepresentation.Items)
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else:
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items.append(item)
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return items
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def assign_material_to_mesh(self, material, is_styled_item=False):
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self.mesh.materials.append(material)
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if is_styled_item:
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index = len(self.obj.material_slots) - 1
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self.obj.material_slots[index].link = 'OBJECT'
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self.obj.material_slots[index].material = material
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class IfcImporter():
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def __init__(self, ifc_import_settings):
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self.ifc_import_settings = ifc_import_settings
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self.diff = None
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self.file = None
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self.settings = ifcopenshell.geom.settings()
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if self.ifc_import_settings.should_import_curves:
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self.settings.set(self.settings.INCLUDE_CURVES, True)
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self.settings_2d = ifcopenshell.geom.settings()
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self.settings_2d.set(self.settings_2d.INCLUDE_CURVES, True)
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self.existing_elements = {}
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self.project = None
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self.classifications = {}
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self.spatial_structure_elements = {}
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self.elements = {}
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self.type_collection = None
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self.type_products = {}
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self.meshes = {}
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self.mesh_shapes = {}
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self.time = 0
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self.unit_scale = 1
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self.added_data = {}
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self.native_elements = {}
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self.native_data = {}
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self.groups = {}
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self.aggregates = {}
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self.material_creator = MaterialCreator(ifc_import_settings)
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def execute(self):
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self.load_existing_rooted_elements()
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self.load_diff()
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self.cache_file()
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self.load_file()
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self.set_ifc_file()
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if self.ifc_import_settings.should_auto_set_workarounds:
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self.auto_set_workarounds()
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self.calculate_unit_scale()
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self.set_units()
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self.create_geometric_representation_contexts()
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self.create_project()
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self.create_classifications()
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self.create_document_information()
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self.create_document_references()
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self.create_spatial_hierarchy()
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self.purge_diff()
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self.create_type_products()
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if self.ifc_import_settings.should_import_aggregates:
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self.create_aggregates()
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if self.ifc_import_settings.should_import_opening_elements:
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self.create_openings_collection()
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if self.ifc_import_settings.should_import_native:
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self.parse_native_products()
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self.filter_ifc()
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self.patch_ifc()
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self.create_georeferencing()
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self.create_groups()
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self.create_grids()
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# TODO: Deprecate after bug #682 is fixed and the new importer is stable
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if self.ifc_import_settings.should_use_legacy:
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self.create_products_legacy()
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else:
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self.create_products()
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self.place_objects_in_spatial_tree()
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if self.ifc_import_settings.should_merge_aggregates:
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self.merge_aggregates()
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if self.ifc_import_settings.should_merge_by_class:
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self.merge_by_class()
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elif self.ifc_import_settings.should_merge_by_material:
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self.merge_by_material()
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if self.ifc_import_settings.should_merge_materials_by_colour \
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or (self.ifc_import_settings.should_auto_set_workarounds \
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and len(self.material_creator.materials) > 300):
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self.merge_materials_by_colour()
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if self.ifc_import_settings.should_clean_mesh:
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self.clean_mesh()
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def auto_set_workarounds(self):
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if 'DDS-CAD' in self.file.wrapped_data.header.file_name.originating_system:
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self.ifc_import_settings.should_treat_styled_item_as_material = True
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applications = self.file.by_type('IfcApplication')
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if not applications:
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return
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if applications[0].ApplicationIdentifier == 'Revit':
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self.ifc_import_settings.should_treat_styled_item_as_material = True
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if self.is_ifc_class_far_away('IfcSite'):
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self.ifc_import_settings.should_ignore_site_coordinates = True
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if self.is_ifc_class_far_away('IfcBuilding'):
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self.ifc_import_settings.should_ignore_building_coordinates = True
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elif applications[0].ApplicationFullName.lower() == '12d model':
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self.ifc_import_settings.should_reset_absolute_coordinates = True
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elif 'Civil 3D' in applications[0].ApplicationFullName:
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self.ifc_import_settings.should_reset_absolute_coordinates = True
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elif applications[0].ApplicationFullName == 'Tekla Structures':
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if self.is_ifc_class_far_away('IfcSite'):
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self.ifc_import_settings.should_ignore_site_coordinates = True
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def is_ifc_class_far_away(self, ifc_class):
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for site in self.file.by_type(ifc_class):
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if not site.ObjectPlacement \
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or not site.ObjectPlacement.RelativePlacement \
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or not site.ObjectPlacement.RelativePlacement.Location:
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continue
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if self.is_point_far_away(site.ObjectPlacement.RelativePlacement.Location):
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return True
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def is_point_far_away(self, point):
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# Arbitrary threshold based on experience
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return abs(point.Coordinates[0]) > 1000000 \
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or abs(point.Coordinates[1]) > 1000000 \
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or abs(point.Coordinates[2]) > 1000000
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def parse_native_products(self):
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self.parse_native_swept_disk_solid()
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self.parse_native_extruded_area_solid()
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def parse_native_swept_disk_solid(self):
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for element in self.file.by_type('IfcSweptDiskSolid'):
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dummy_geometry = self.get_dummy_geometry()
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inverse_elements = self.file.get_inverse(element)
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for inverse_element in inverse_elements:
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if inverse_element.is_a('IfcShapeRepresentation'):
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inverse_element.RepresentationType = 'Curve'
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for product in self.get_products_from_shape_representation(inverse_element):
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self.native_elements.setdefault(product.GlobalId, {})[dummy_geometry.id()] = element
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self.replace_attribute(inverse_element, element, dummy_geometry)
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def parse_native_extruded_area_solid(self):
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for element in self.file.by_type('IfcExtrudedAreaSolid'):
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if element.SweptArea.is_a() not in [
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'IfcArbitraryClosedProfileDef',
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'IfcRectangleProfileDef'
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]:
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continue
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dummy_geometry = self.get_dummy_geometry()
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inverse_elements = self.file.get_inverse(element)
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for inverse_element in inverse_elements:
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if inverse_element.is_a('IfcShapeRepresentation'):
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inverse_element.RepresentationType = 'Curve'
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for product in self.get_products_from_shape_representation(inverse_element):
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self.native_elements.setdefault(product.GlobalId, {})[dummy_geometry.id()] = element
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self.replace_attribute(inverse_element, element, dummy_geometry)
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def get_dummy_geometry(self):
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point = self.file.createIfcCartesianPoint((0., 0., 0.))
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direction = self.file.createIfcVector(self.file.createIfcDirection((0., 0., 1.)), 1000.)
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return self.file.createIfcLine(point, direction)
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def get_products_from_shape_representation(self, element):
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products = [pr.ShapeOfProduct[0] for pr in element.OfProductRepresentation]
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for rep_map in element.RepresentationMap:
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for usage in rep_map.MapUsage:
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for inverse_element in self.file.get_inverse(usage):
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if inverse_element.is_a('IfcShapeRepresentation'):
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products.extend(self.get_products_from_shape_representation(inverse_element))
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return products
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def replace_attribute(self, element, old, new):
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for i, attribute in enumerate(element):
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if attribute == old:
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element[i] = new
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elif isinstance(attribute, tuple):
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new_attribute = list(attribute)
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for j, item in enumerate(attribute):
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if item == old:
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new_attribute[j] = new
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element[i] = new_attribute
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def filter_ifc(self):
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for element in self.file.by_type('IfcElement'):
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if self.diff \
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and element.GlobalId not in self.diff['added'] \
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and element.GlobalId not in self.diff['changed'].keys():
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self.file.remove(element)
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def patch_ifc(self):
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project = self.file.by_type('IfcProject')[0]
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if self.ifc_import_settings.should_ignore_site_coordinates:
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sites = self.find_decomposed_ifc_class(project, 'IfcSite')
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for site in sites:
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self.patch_placement_to_origin(site)
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if self.ifc_import_settings.should_ignore_building_coordinates:
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buildings = self.find_decomposed_ifc_class(project, 'IfcBuilding')
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for building in buildings:
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self.patch_placement_to_origin(building)
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if self.ifc_import_settings.should_reset_absolute_coordinates:
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self.reset_absolute_coordinates()
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def reset_absolute_coordinates(self):
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# 12D can have some funky coordinates out of any sensible range. This
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# method will not work all the time, but will catch most issues.
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offset_point = None
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for point in self.file.by_type('IfcCartesianPoint'):
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if len(point.Coordinates) == 2 or not self.is_point_far_away(point):
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continue
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if not offset_point:
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offset_point = (point.Coordinates[0], point.Coordinates[1], point.Coordinates[2])
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self.ifc_import_settings.logger.info(f'Resetting absolute coordinates by {point}')
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point.Coordinates = (
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point.Coordinates[0] - offset_point[0],
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point.Coordinates[1] - offset_point[1],
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point.Coordinates[2] - offset_point[2]
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)
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def find_decomposed_ifc_class(self, element, ifc_class):
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results = []
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rel_aggregates = element.IsDecomposedBy
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if not rel_aggregates:
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return results
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for rel_aggregate in rel_aggregates:
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for part in rel_aggregate.RelatedObjects:
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if part.is_a(ifc_class):
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results.append(part)
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results.extend(self.find_decomposed_ifc_class(part, ifc_class))
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return results
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def patch_placement_to_origin(self, element):
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element.ObjectPlacement.RelativePlacement.Location.Coordinates = (0., 0., 0.)
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if element.ObjectPlacement.RelativePlacement.Axis:
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element.ObjectPlacement.RelativePlacement.Axis.DirectionRatios = (0., 0., 1.)
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if element.ObjectPlacement.RelativePlacement.RefDirection:
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element.ObjectPlacement.RelativePlacement.RefDirection.DirectionRatios = (1., 0., 0.)
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def create_georeferencing(self):
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try:
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map_conversion = self.file.by_type('IfcMapConversion')
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projected_crs = self.file.by_type('IfcProjectedCRS')
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if not map_conversion or not projected_crs:
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return
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except:
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return # For example, in IFC2X3
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map_conversion = map_conversion[0]
|
|
projected_crs = projected_crs[0]
|
|
scene = bpy.context.scene
|
|
scene.BIMProperties.has_georeferencing = True
|
|
scene.MapConversion.eastings = str(map_conversion.Eastings)
|
|
scene.MapConversion.northings = str(map_conversion.Northings)
|
|
scene.MapConversion.orthogonal_height = str(map_conversion.OrthogonalHeight)
|
|
scene.MapConversion.x_axis_abscissa = str(map_conversion.XAxisAbscissa)
|
|
scene.MapConversion.x_axis_ordinate = str(map_conversion.XAxisOrdinate)
|
|
scene.MapConversion.scale = str(map_conversion.Scale)
|
|
scene.TargetCRS.name = projected_crs.Name
|
|
scene.TargetCRS.description = projected_crs.Description
|
|
scene.TargetCRS.geodetic_datum = projected_crs.GeodeticDatum
|
|
scene.TargetCRS.vertical_datum = projected_crs.VerticalDatum
|
|
scene.TargetCRS.map_projection = projected_crs.MapProjection
|
|
scene.TargetCRS.map_zone = projected_crs.MapZone
|
|
scene.TargetCRS.map_unit = self.get_unit_name(projected_crs.MapUnit)
|
|
|
|
def get_unit_name(self, named_unit):
|
|
name = ''
|
|
if hasattr(named_unit, 'Prefix') and named_unit.Prefix:
|
|
name += named_unit.Prefix
|
|
name += named_unit.Name
|
|
return name
|
|
|
|
def create_groups(self):
|
|
group_collection = None
|
|
for collection in self.project['blender'].children:
|
|
if collection.name == 'Groups':
|
|
group_collection = collection
|
|
break
|
|
if group_collection is None:
|
|
group_collection = bpy.data.collections.new('Groups')
|
|
self.project['blender'].children.link(group_collection)
|
|
for element in self.file.by_type('IfcGroup'):
|
|
self.create_group(element, group_collection)
|
|
|
|
def create_group(self, element, group_collection):
|
|
if element.GlobalId in self.existing_elements:
|
|
obj = self.existing_elements[element.GlobalId]
|
|
else:
|
|
obj = bpy.data.objects.new(f'IfcGroup/{element.Name}', None)
|
|
self.add_element_attributes(element, obj)
|
|
group_collection.objects.link(obj)
|
|
self.groups[element.GlobalId] = {
|
|
'ifc': element,
|
|
'blender': obj
|
|
}
|
|
|
|
def create_grids(self):
|
|
grids = self.file.by_type('IfcGrid')
|
|
for grid in grids:
|
|
collection = bpy.data.collections.new(self.get_name(grid))
|
|
self.project['blender'].children.link(collection)
|
|
element_matrix = self.get_local_placement(grid.ObjectPlacement)
|
|
element_matrix[0][3] *= self.unit_scale
|
|
element_matrix[1][3] *= self.unit_scale
|
|
element_matrix[2][3] *= self.unit_scale
|
|
self.create_grid_axes(grid.UAxes, collection, element_matrix)
|
|
self.create_grid_axes(grid.VAxes, collection, element_matrix)
|
|
|
|
def create_grid_axes(self, axes, grid, matrix_world):
|
|
for axis in axes:
|
|
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.matrix_world = matrix_world
|
|
grid.objects.link(obj)
|
|
|
|
def create_type_products(self):
|
|
type_products = self.file.by_type('IfcTypeProduct')
|
|
for collection in self.project['blender'].children:
|
|
if collection.name == 'Types':
|
|
self.type_collection = collection
|
|
break
|
|
if not self.type_collection:
|
|
self.type_collection = bpy.data.collections.new('Types')
|
|
self.project['blender'].children.link(self.type_collection)
|
|
for type_product in type_products:
|
|
self.create_type_product(type_product)
|
|
bpy.context.view_layer.layer_collection.children[self.project['blender'].name].children[self.type_collection.name].hide_viewport = True
|
|
|
|
def create_type_product(self, element):
|
|
self.ifc_import_settings.logger.info('Creating object {}'.format(element))
|
|
if element.GlobalId in self.existing_elements:
|
|
return
|
|
representation_map = self.get_type_product_body_representation_map(element)
|
|
mesh = None
|
|
if representation_map:
|
|
try:
|
|
shape = ifcopenshell.geom.create_shape(self.settings, representation_map.MappedRepresentation)
|
|
mesh_name = f'mesh-{shape.id}'
|
|
mesh = self.meshes.get(mesh_name)
|
|
if mesh is None:
|
|
mesh = self.create_mesh(element, shape)
|
|
self.meshes[mesh_name] = mesh
|
|
except:
|
|
self.ifc_import_settings.logger.error('Failed to generate shape for {}'.format(element))
|
|
obj = bpy.data.objects.new(self.get_name(element), mesh)
|
|
if mesh:
|
|
self.material_creator.create(element, obj, mesh)
|
|
self.add_element_attributes(element, obj)
|
|
self.add_element_classifications(element, obj)
|
|
self.add_element_document_relations(element, obj)
|
|
self.add_type_product_psets(element, obj)
|
|
self.add_product_representation_contexts(element, obj)
|
|
self.type_collection.objects.link(obj)
|
|
self.type_products[element.GlobalId] = obj
|
|
|
|
def get_type_product_body_representation_map(self, element):
|
|
if not element.RepresentationMaps:
|
|
return
|
|
for representation_map in element.RepresentationMaps:
|
|
context = representation_map.MappedRepresentation.ContextOfItems
|
|
if context.ContextType == 'Model' \
|
|
and context.ContextIdentifier == 'Body' \
|
|
and context.TargetView == 'MODEL_VIEW':
|
|
return representation_map
|
|
|
|
def create_products_legacy(self):
|
|
elements = self.file.by_type('IfcElement') + self.file.by_type('IfcSpace')
|
|
for element in elements:
|
|
self.create_product_legacy(element)
|
|
|
|
def create_products(self):
|
|
if self.ifc_import_settings.should_use_cpu_multiprocessing:
|
|
iterator = ifcopenshell.geom.iterator(self.settings, self.file, multiprocessing.cpu_count())
|
|
else:
|
|
iterator = ifcopenshell.geom.iterator(self.settings, self.file)
|
|
valid_file = iterator.initialize()
|
|
if not valid_file:
|
|
self.create_products_legacy() # Sometimes, this can still work, not 100% sure why yet
|
|
return False
|
|
old_progress = -1
|
|
while True:
|
|
progress = iterator.progress() // 2
|
|
if progress > old_progress:
|
|
print("\r[" + "#" * progress + " " * (50 - progress) + "]", end="")
|
|
old_progress = progress
|
|
shape = iterator.get()
|
|
if shape:
|
|
self.create_product(self.file.by_id(shape.guid), shape)
|
|
if not iterator.next():
|
|
break
|
|
print("\rDone creating geometry" + " " * 30)
|
|
|
|
def create_product(self, element, shape=None):
|
|
if element is None:
|
|
return
|
|
|
|
if not self.ifc_import_settings.should_import_opening_elements \
|
|
and element.is_a('IfcOpeningElement'):
|
|
return
|
|
|
|
if not self.ifc_import_settings.should_import_spaces \
|
|
and element.is_a('IfcSpace'):
|
|
return
|
|
|
|
if element.GlobalId in self.existing_elements:
|
|
return self.existing_elements[element.GlobalId]
|
|
|
|
self.ifc_import_settings.logger.info('Creating object {}'.format(element))
|
|
|
|
if shape:
|
|
# TODO: make names more meaningful
|
|
mesh_name = f'mesh-{shape.geometry.id}'
|
|
mesh = self.meshes.get(mesh_name)
|
|
if mesh is None:
|
|
if element.GlobalId in self.native_elements:
|
|
mesh = self.create_native_mesh(element, shape)
|
|
if mesh is None:
|
|
mesh = self.create_mesh(element, shape)
|
|
self.meshes[mesh_name] = mesh
|
|
else:
|
|
mesh = None
|
|
|
|
obj = bpy.data.objects.new(self.get_name(element), mesh)
|
|
|
|
if shape:
|
|
m = shape.transformation.matrix.data
|
|
mat = mathutils.Matrix(([m[0], m[1], m[2], 0],
|
|
[m[3], m[4], m[5], 0],
|
|
[m[6], m[7], m[8], 0],
|
|
[m[9], m[10], m[11], 1]))
|
|
mat.transpose()
|
|
obj.matrix_world = mat
|
|
self.material_creator.create(element, obj, mesh)
|
|
elif hasattr(element, 'ObjectPlacement'):
|
|
obj.matrix_world = self.get_element_matrix(element)
|
|
|
|
self.add_element_representation_items(element, obj)
|
|
self.add_element_attributes(element, obj)
|
|
self.add_element_classifications(element, obj)
|
|
self.add_element_document_relations(element, obj)
|
|
self.add_defines_by_type_relation(element, obj)
|
|
self.add_product_definitions(element, obj)
|
|
self.add_product_representation_contexts(element, obj)
|
|
self.added_data[element.GlobalId] = obj
|
|
return obj
|
|
|
|
def add_element_representation_items(self, element, obj):
|
|
if not obj.data or 'ios_items' not in obj.data:
|
|
return
|
|
cumulative_vertex_index = 0
|
|
for item in obj.data['ios_items']:
|
|
vg = obj.vertex_groups.new(name=item['name'])
|
|
vg.add([v.index for v in obj.data.vertices[cumulative_vertex_index:cumulative_vertex_index+item['total_vertices']]], 1, 'ADD')
|
|
cumulative_vertex_index += item['total_vertices']
|
|
|
|
def create_native_mesh(self, element, shape):
|
|
data = self.native_elements[element.GlobalId]
|
|
materials = []
|
|
items = []
|
|
for representation in self.get_body_representations(element.Representation.Representations):
|
|
for item in representation['raw'].Items:
|
|
materials.append(self.get_representation_item_material_name(item))
|
|
if item.id() in data:
|
|
item = data[item.id()]
|
|
if item.is_a() == 'IfcExtrudedAreaSolid':
|
|
bm = self.create_native_extruded_area_solid(item, element)
|
|
if bm:
|
|
bmesh.ops.transform(bm, matrix=representation['matrix'], verts=bm.verts)
|
|
items.append({'blender': bm, 'raw': item})
|
|
else:
|
|
items.append(None)
|
|
elif item.is_a('IfcSweptDiskSolid'):
|
|
items.append({
|
|
'blender': self.transform_curve(
|
|
self.create_native_swept_disk_solid(item, element), representation['matrix']),
|
|
'raw': item
|
|
})
|
|
else:
|
|
items.append(None)
|
|
|
|
if not items:
|
|
return None
|
|
|
|
bevel_depth = None
|
|
merged_curve = None
|
|
merged_bm = bmesh.new()
|
|
material_ids = []
|
|
representation_items = []
|
|
for i, item in enumerate(items):
|
|
if not item:
|
|
continue
|
|
if isinstance(item['blender'], bpy.types.Curve):
|
|
if bevel_depth is None:
|
|
bevel_depth = item['blender'].bevel_depth
|
|
merged_curve = item['blender']
|
|
elif item['blender'].bevel_depth == bevel_depth:
|
|
self.merge_curves(merged_curve, item['blender'])
|
|
else:
|
|
# TODO: handle if there are multiple different radiuses
|
|
# We don't have a choice but to meshify it
|
|
pass
|
|
elif isinstance(item['blender'], bmesh.types.BMesh):
|
|
representation_items.append({
|
|
'name': item['raw'].is_a(),
|
|
'total_vertices': len(item['blender'].verts)
|
|
})
|
|
total_polygons = len(item['blender'].faces)
|
|
if merged_bm is None:
|
|
merged_bm = item['blender']
|
|
else:
|
|
self.merge_bmeshes(merged_bm, item['blender'])
|
|
if materials[i]:
|
|
material_ids += [i] * total_polygons
|
|
else:
|
|
# Magic number 999999 represents no material, until this has a better approach
|
|
material_ids += [999999] * total_polygons
|
|
if merged_curve:
|
|
return merged_curve
|
|
# TODO: handle both curve and bmeshes combined
|
|
mesh = bpy.data.meshes.new('Native Mesh')
|
|
merged_bm.to_mesh(mesh)
|
|
merged_bm.free()
|
|
mesh['ios_materials'] = materials
|
|
mesh['ios_material_ids'] = material_ids
|
|
mesh['ios_items'] = representation_items
|
|
for representation_item in representation_items:
|
|
new = mesh.BIMMeshProperties.representation_items.add()
|
|
new.name = representation_item['name']
|
|
return mesh
|
|
|
|
def get_representation_item_material_name(self, item):
|
|
if not item.StyledByItem:
|
|
return
|
|
styled_item = item.StyledByItem[0]
|
|
return self.material_creator.get_material_name(styled_item)
|
|
|
|
def transform_curve(self, curve, matrix):
|
|
for spline in curve.splines:
|
|
for point in spline.points:
|
|
point.co = matrix @ point.co
|
|
return curve
|
|
|
|
def merge_curves(self, a, b):
|
|
for spline in b.splines:
|
|
new_spline = a.splines.new('POLY')
|
|
is_first = True
|
|
for point in spline.points:
|
|
if is_first:
|
|
is_first = False
|
|
else:
|
|
new_spline.points.add(1)
|
|
new_spline.points[-1].co = point.co
|
|
return a
|
|
|
|
def merge_bmeshes(self, a, b):
|
|
mesh = bpy.data.meshes.new('x')
|
|
b.to_mesh(mesh)
|
|
b.free()
|
|
a.from_mesh(mesh)
|
|
return a
|
|
|
|
def create_native_swept_disk_solid(self, item, element):
|
|
# TODO: support inner radius, start param, and end param
|
|
shape = ifcopenshell.geom.create_shape(self.settings, item.Directrix)
|
|
mesh = self.create_mesh(element, shape, is_curve=True)
|
|
mesh.bevel_depth = self.unit_scale * item.Radius
|
|
return mesh
|
|
|
|
def create_native_extruded_area_solid(self, item, element):
|
|
#print(shape.materials)
|
|
if item.SweptArea.is_a() == 'IfcArbitraryClosedProfileDef':
|
|
shape = ifcopenshell.geom.create_shape(self.settings, item.SweptArea.OuterCurve)
|
|
bm = self.bmesh_from_pydata(*self.shape_to_mesh(shape))
|
|
bm.faces.new([v for v in bm.verts])
|
|
bm.faces.ensure_lookup_table()
|
|
elif item.SweptArea.is_a() == 'IfcRectangleProfileDef':
|
|
bm = self.bmesh_from_rectangle(item.SweptArea.XDim, item.SweptArea.YDim)
|
|
if item.SweptArea.Position:
|
|
bmesh.ops.transform(bm, matrix=self.get_axis2placement(item.SweptArea.Position), verts=bm.verts)
|
|
bmesh.ops.transform(bm, matrix=mathutils.Matrix() * self.unit_scale, verts=bm.verts)
|
|
else:
|
|
# TODO: what if we can't handle it?
|
|
return
|
|
results = bmesh.ops.extrude_face_region(bm, geom=[bm.faces[0]])
|
|
bm.faces.ensure_lookup_table()
|
|
offset = self.unit_scale * item.Depth * mathutils.Vector(item.ExtrudedDirection.DirectionRatios)
|
|
for geom in results['geom']:
|
|
if isinstance(geom, bmesh.types.BMVert):
|
|
geom.co += offset
|
|
if item.Position:
|
|
bmesh.ops.transform(bm, matrix=self.get_axis2placement(item.Position), verts=bm.verts)
|
|
return bm
|
|
#mesh['ios_material_ids'] = [0] * len(bm.faces)
|
|
|
|
def bmesh_from_rectangle(self, x, y):
|
|
bm = bmesh.new()
|
|
bmesh.ops.create_grid(bm, x_segments=1, y_segments=1, size=x/2)
|
|
bm.verts.ensure_lookup_table()
|
|
diff_vector = mathutils.Vector((0., (x - y) / 2., 0.))
|
|
bm.verts[0].co += diff_vector
|
|
bm.verts[1].co += diff_vector
|
|
bm.verts[2].co -= diff_vector
|
|
bm.verts[3].co -= diff_vector
|
|
bm.edges.ensure_lookup_table()
|
|
bm.faces.ensure_lookup_table()
|
|
return bm
|
|
|
|
def merge_aggregates(self):
|
|
self.merge_objects_inside_aggregates()
|
|
self.convert_aggregate_instances_to_object()
|
|
|
|
def merge_objects_inside_aggregates(self):
|
|
global_ids_to_delete = []
|
|
for collection in bpy.data.collections:
|
|
if 'IfcRelAggregates/' not in collection.name:
|
|
continue
|
|
obs = []
|
|
for i, ob in enumerate(collection.objects):
|
|
if ob.type == 'MESH':
|
|
if i > 0:
|
|
global_ids_to_delete.append(ob.BIMObjectProperties.attributes.get('GlobalId').string_value)
|
|
obs.append(ob)
|
|
ctx = {}
|
|
ctx['active_object'] = obs[0]
|
|
ctx['selected_editable_objects'] = obs
|
|
if obs[0].data.users > 1:
|
|
obs[0].data = obs[0].data.copy()
|
|
bpy.ops.object.join(ctx)
|
|
|
|
for global_id in global_ids_to_delete:
|
|
del self.added_data[global_id]
|
|
|
|
def convert_aggregate_instances_to_object(self):
|
|
for obj in self.aggregates.values():
|
|
aggregate = obj.instance_collection.objects[0]
|
|
obj.users_collection[0].objects.link(aggregate)
|
|
aggregate.name = obj.name
|
|
bpy.data.collections.remove(obj.instance_collection)
|
|
bpy.data.objects.remove(obj)
|
|
|
|
def merge_by_class(self):
|
|
merge_set = {}
|
|
for obj in self.added_data.values():
|
|
if '/' not in obj.name \
|
|
or 'IfcRelAggregates' in obj.users_collection[0].name:
|
|
continue
|
|
merge_set.setdefault(obj.name.split('/')[0], []).append(obj)
|
|
self.merge_objects(merge_set)
|
|
|
|
def merge_by_material(self):
|
|
merge_set = {}
|
|
for obj in self.added_data.values():
|
|
if '/' not in obj.name \
|
|
or 'IfcRelAggregates' in obj.users_collection[0].name:
|
|
continue
|
|
if not obj.material_slots:
|
|
merge_set.setdefault('no-material', []).append(obj)
|
|
else:
|
|
merge_set.setdefault(obj.material_slots[0].name, []).append(obj)
|
|
self.merge_objects(merge_set)
|
|
|
|
def merge_objects(self, merge_set):
|
|
for ifc_class, objs in merge_set.items():
|
|
context_override = {}
|
|
context_override['object'] = context_override['active_object'] = objs[0]
|
|
context_override['selected_objects'] = context_override['selected_editable_objects'] = objs
|
|
bpy.ops.object.join(context_override)
|
|
|
|
def merge_materials_by_colour(self):
|
|
cleaned_materials = {}
|
|
for m in bpy.data.materials:
|
|
key = '-'.join([str(x) for x in m.diffuse_color])
|
|
cleaned_materials[key] = { 'diffuse_color': m.diffuse_color }
|
|
|
|
for cleaned_material in cleaned_materials.values():
|
|
cleaned_material['material'] = bpy.data.materials.new('Merged Material')
|
|
cleaned_material['material'].diffuse_color = cleaned_material['diffuse_color']
|
|
|
|
for obj in self.added_data.values():
|
|
if not hasattr(obj, 'material_slots') \
|
|
or not obj.material_slots:
|
|
continue
|
|
for slot in obj.material_slots:
|
|
m = slot.material
|
|
key = '-'.join([str(x) for x in m.diffuse_color])
|
|
slot.material = cleaned_materials[key]['material']
|
|
|
|
for material in self.material_creator.materials.values():
|
|
bpy.data.materials.remove(material)
|
|
|
|
def clean_mesh(self):
|
|
obj = None
|
|
last_obj = None
|
|
for obj in self.added_data.values():
|
|
if obj.type == 'MESH':
|
|
obj.select_set(True)
|
|
last_obj = obj
|
|
if not obj:
|
|
return
|
|
bpy.context.view_layer.objects.active = last_obj
|
|
context_override = {}
|
|
bpy.ops.object.editmode_toggle(context_override)
|
|
bpy.ops.mesh.remove_doubles(context_override)
|
|
bpy.ops.mesh.tris_convert_to_quads(context_override)
|
|
bpy.ops.mesh.normals_make_consistent(context_override)
|
|
bpy.ops.object.editmode_toggle(context_override)
|
|
|
|
def add_product_representation_contexts(self, element, obj):
|
|
subcontexts = []
|
|
if element.is_a('IfcProduct'):
|
|
if not element.Representation:
|
|
return
|
|
for r in element.Representation.Representations:
|
|
if r.ContextOfItems.is_a('IfcGeometricRepresentationSubContext'):
|
|
subcontexts.append('{}/{}/{}'.format(
|
|
r.ContextOfItems.ContextType or '',
|
|
r.ContextOfItems.ContextIdentifier or '',
|
|
r.ContextOfItems.TargetView or ''))
|
|
else:
|
|
subcontexts.append('{}/{}/{}'.format(
|
|
r.ContextOfItems.ContextType or '',
|
|
r.ContextOfItems.ContextIdentifier or '',
|
|
''))
|
|
elif element.is_a('IfcTypeProduct'):
|
|
if not element.RepresentationMaps:
|
|
return
|
|
for r in element.RepresentationMaps:
|
|
subcontexts.append('{}/{}/{}'.format(
|
|
r.MappedRepresentation.ContextOfItems.ContextType or '',
|
|
r.MappedRepresentation.ContextOfItems.ContextIdentifier or '',
|
|
r.MappedRepresentation.ContextOfItems.TargetView or ''))
|
|
subcontexts = set(subcontexts)
|
|
for subcontext in subcontexts:
|
|
representation_context = obj.BIMObjectProperties.representation_contexts.add()
|
|
representation_context.context, representation_context.name, representation_context.target_view = subcontext.split('/')
|
|
|
|
def add_product_definitions(self, element, obj):
|
|
if not hasattr(element, 'IsDefinedBy') or not element.IsDefinedBy:
|
|
return
|
|
for definition in element.IsDefinedBy:
|
|
if not definition.is_a('IfcRelDefinesByProperties'):
|
|
continue
|
|
if definition.RelatingPropertyDefinition.is_a('IfcPropertySet'):
|
|
self.add_pset(definition.RelatingPropertyDefinition, obj)
|
|
elif definition.RelatingPropertyDefinition.is_a('IfcElementQuantity'):
|
|
self.add_qto(definition.RelatingPropertyDefinition, obj)
|
|
|
|
def add_type_product_psets(self, element, obj):
|
|
if not hasattr(element, 'HasPropertySets') or not element.HasPropertySets:
|
|
return
|
|
for definition in element.HasPropertySets:
|
|
if definition.is_a('IfcPropertySet'):
|
|
self.add_pset(definition, obj)
|
|
|
|
def add_pset(self, pset, obj):
|
|
new_pset = obj.BIMObjectProperties.psets.add()
|
|
new_pset.name = pset.Name
|
|
if new_pset.name in schema.ifc.psets:
|
|
for prop_name in schema.ifc.psets[new_pset.name]['HasPropertyTemplates'].keys():
|
|
prop = new_pset.properties.add()
|
|
prop.name = prop_name
|
|
# Invalid IFC, but some vendors like Solidworks do this so we accomodate it
|
|
if not pset.HasProperties:
|
|
return
|
|
for prop in pset.HasProperties:
|
|
if prop.is_a('IfcPropertySingleValue') and prop.NominalValue:
|
|
index = new_pset.properties.find(prop.Name)
|
|
if index >= 0:
|
|
new_pset.properties[index].string_value = str(prop.NominalValue.wrappedValue)
|
|
else:
|
|
new_prop = new_pset.properties.add()
|
|
new_prop.name = prop.Name
|
|
new_prop.string_value = str(prop.NominalValue.wrappedValue)
|
|
|
|
def add_qto(self, qto, obj):
|
|
new_qto = obj.BIMObjectProperties.qtos.add()
|
|
new_qto.name = qto.Name
|
|
if new_qto.name in schema.ifc.qtos:
|
|
for prop_name in schema.ifc.qtos[new_qto.name]['HasPropertyTemplates'].keys():
|
|
prop = new_qto.properties.add()
|
|
prop.name = prop_name
|
|
for prop in qto.Quantities:
|
|
if prop.is_a('IfcPhysicalSimpleQuantity'):
|
|
value = getattr(prop, '{}Value'.format(prop.is_a()[len('IfcQuantity'):]))
|
|
if not value:
|
|
continue
|
|
index = new_qto.properties.find(prop.Name)
|
|
if index >= 0:
|
|
new_qto.properties[index].string_value = str(value)
|
|
else:
|
|
new_prop = new_qto.properties.add()
|
|
new_prop.name = prop.Name
|
|
new_prop.string_value = str(value)
|
|
|
|
def add_defines_by_type_relation(self, element, obj):
|
|
related_type = None
|
|
if self.file.schema == 'IFC2X3':
|
|
if not hasattr(element, 'IsDefinedBy') or not element.IsDefinedBy:
|
|
return
|
|
for relationship in element.IsDefinedBy:
|
|
if relationship.is_a('IfcRelDefinesByType'):
|
|
related_type = relationship.RelatingType
|
|
break
|
|
else:
|
|
if not hasattr(element, 'IsTypedBy') or not element.IsTypedBy:
|
|
return
|
|
related_type = element.IsTypedBy[0].RelatingType
|
|
if related_type:
|
|
obj.BIMObjectProperties.relating_type = self.type_products[related_type.GlobalId]
|
|
|
|
def load_existing_rooted_elements(self):
|
|
for obj in bpy.data.objects:
|
|
if hasattr(obj, 'BIMObjectProperties') and obj.BIMObjectProperties.attributes.get('GlobalId'):
|
|
self.existing_elements[obj.BIMObjectProperties.attributes.get('GlobalId').string_value] = obj
|
|
|
|
def load_diff(self):
|
|
if not self.ifc_import_settings.diff_file:
|
|
return
|
|
with open(self.ifc_import_settings.diff_file, 'r') as file:
|
|
self.diff = json.load(file)
|
|
|
|
def cache_file(self):
|
|
destination = os.path.join(bpy.context.scene.BIMProperties.data_dir, 'cache', 'ifc')
|
|
copythread = FileCopy(self.ifc_import_settings.input_file, destination)
|
|
bpy.context.scene.BIMProperties.ifc_cache = os.path.join(destination,
|
|
os.path.basename(self.ifc_import_settings.input_file))
|
|
copythread.start()
|
|
copythread.join()
|
|
|
|
def load_file(self):
|
|
self.ifc_import_settings.logger.info('loading file {}'.format(self.ifc_import_settings.input_file))
|
|
extension = self.ifc_import_settings.input_file.split('.')[-1]
|
|
if extension == 'ifczip':
|
|
with tempfile.TemporaryDirectory() as unzipped_path:
|
|
with zipfile.ZipFile(self.ifc_import_settings.input_file, 'r') as zip_ref:
|
|
zip_ref.extractall(unzipped_path)
|
|
for filename in Path(unzipped_path).glob('**/*.ifc'):
|
|
self.file = ifcopenshell.open(filename)
|
|
break
|
|
elif extension == 'ifcxml':
|
|
self.file = ifcopenshell.file(
|
|
ifcopenshell.ifcopenshell_wrapper.parse_ifcxml(self.ifc_import_settings.input_file))
|
|
elif extension == 'ifc':
|
|
self.file = ifcopenshell.open(self.ifc_import_settings.input_file)
|
|
ifc.IfcStore.file = self.file
|
|
|
|
def set_ifc_file(self):
|
|
bpy.context.scene.BIMProperties.ifc_file = self.ifc_import_settings.input_file
|
|
ifc.IfcStore.path = 'self.ifc_import_settings.input_file'
|
|
|
|
def calculate_unit_scale(self):
|
|
units = self.file.by_type('IfcUnitAssignment')[0]
|
|
for unit in units.Units:
|
|
if not hasattr(unit, 'UnitType') \
|
|
or unit.UnitType != 'LENGTHUNIT':
|
|
continue
|
|
while unit.is_a('IfcConversionBasedUnit'):
|
|
self.unit_scale *= unit.ConversionFactor.ValueComponent.wrappedValue
|
|
unit = unit.ConversionFactor.UnitComponent
|
|
if unit.is_a('IfcSIUnit'):
|
|
self.unit_scale *= helper.SIUnitHelper.get_prefix_multiplier(unit.Prefix)
|
|
|
|
def set_units(self):
|
|
units = self.file.by_type('IfcUnitAssignment')[0]
|
|
for unit in units.Units:
|
|
if unit.is_a('IfcNamedUnit') and unit.UnitType == 'LENGTHUNIT':
|
|
if unit.is_a('IfcSIUnit'):
|
|
bpy.context.scene.unit_settings.system = 'METRIC'
|
|
if unit.Name == 'METRE':
|
|
if not unit.Prefix:
|
|
bpy.context.scene.unit_settings.length_unit = 'METERS'
|
|
else:
|
|
bpy.context.scene.unit_settings.length_unit = f'{unit.Prefix}METERS'
|
|
else:
|
|
bpy.context.scene.unit_settings.system = 'IMPERIAL'
|
|
if unit.Name == 'inch':
|
|
bpy.context.scene.unit_settings.length_unit = 'INCHES'
|
|
elif unit.Name == 'foot':
|
|
bpy.context.scene.unit_settings.length_unit = 'FEET'
|
|
|
|
def create_geometric_representation_contexts(self):
|
|
bpy.context.scene.BIMProperties.has_model_context = False
|
|
for context in self.file.by_type('IfcGeometricRepresentationContext'):
|
|
if context.is_a('IfcGeometricRepresentationSubContext'):
|
|
if not context.ContextIdentifier:
|
|
# Revit creates invalid contexts, so we just ignore them
|
|
continue
|
|
if context.ContextType == 'Model':
|
|
subcontexts = bpy.context.scene.BIMProperties.model_subcontexts
|
|
elif context.ContextType == 'Plan':
|
|
subcontexts = bpy.context.scene.BIMProperties.plan_subcontexts
|
|
if subcontexts.get(context.ContextIdentifier):
|
|
continue
|
|
subcontext = subcontexts.add()
|
|
subcontext.name = context.ContextIdentifier
|
|
subcontext.target_view = context.TargetView
|
|
elif context.ContextType == 'Model':
|
|
bpy.context.scene.BIMProperties.has_model_context = True
|
|
elif context.ContextType == 'Plan':
|
|
bpy.context.scene.BIMProperties.has_plan_context = True
|
|
|
|
def create_project(self):
|
|
self.project = { 'ifc': self.file.by_type('IfcProject')[0] }
|
|
if self.project['ifc'].GlobalId in self.existing_elements:
|
|
self.project['blender'] = self.existing_elements[self.project['ifc'].GlobalId].users_collection[0]
|
|
return
|
|
self.project['blender'] = bpy.data.collections.new('IfcProject/{}'.format(self.project['ifc'].Name))
|
|
bpy.context.scene.collection.children.link(self.project['blender'])
|
|
obj = self.create_product(self.project['ifc'])
|
|
if obj:
|
|
self.project['blender'].objects.link(obj)
|
|
del self.added_data[self.project['ifc'].GlobalId]
|
|
|
|
def create_classifications(self):
|
|
for element in self.file.by_type('IfcClassification'):
|
|
classification = bpy.context.scene.BIMProperties.classifications.add()
|
|
data_map = {
|
|
'name': 'Name', 'source': 'Source',
|
|
'edition': 'Edition', 'edition_date': 'EditionDate',
|
|
'description': 'Description', 'location': 'Location',
|
|
'reference_tokens': 'ReferenceTokens'
|
|
}
|
|
for key, value in data_map.items():
|
|
if hasattr(element, value) and getattr(element, value):
|
|
setattr(classification, key, str(getattr(element, value)))
|
|
classification_file = ifcopenshell.file()
|
|
|
|
# IFC2X3 has no references, so let's manually add them
|
|
if self.file.wrapped_data.schema == 'IFC2X3':
|
|
classification_element = classification_file.createIfcClassification(
|
|
element.Source, element.Edition, element.EditionDate, element.Name)
|
|
for reference in self.file.by_type('IfcClassificationReference'):
|
|
classification_file.createIfcClassificationReference(
|
|
reference.Location, reference.ItemReference, reference.Name, classification_element)
|
|
else:
|
|
references = [element]
|
|
while references:
|
|
entities_to_add = references
|
|
references = self.get_classification_references(references)
|
|
for entity in entities_to_add:
|
|
classification_file.add(entity)
|
|
|
|
classification_filename = '{}-{}'.format(
|
|
Path(os.path.basename(self.ifc_import_settings.input_file)).stem, element.Name)
|
|
classification_file.write(os.path.join(
|
|
bpy.context.scene.BIMProperties.schema_dir, 'classifications',
|
|
'{}.ifc'.format(classification_filename)))
|
|
classification.filename = classification_filename
|
|
self.classifications[classification.filename] = classification
|
|
|
|
def get_classification_references(self, references):
|
|
results = []
|
|
for reference in references:
|
|
results.extend(self.file.get_inverse(reference))
|
|
return results
|
|
|
|
def create_document_information(self):
|
|
for element in self.file.by_type('IfcDocumentInformation'):
|
|
info = bpy.context.scene.BIMProperties.document_information.add()
|
|
data_map = {
|
|
'name': 'Identification',
|
|
'human_name': 'Name',
|
|
'description': 'Description',
|
|
'location': 'Location',
|
|
'purpose': 'Purpose',
|
|
'intended_use': 'IntendedUse',
|
|
'scope': 'Scope',
|
|
'revision': 'Revision',
|
|
'creation_time': 'CreationTime',
|
|
'last_revision_time': 'LastRevisionTime',
|
|
'electronic_format': 'ElectronicFormat',
|
|
'valid_from': 'ValidFrom',
|
|
'valid_until': 'ValidUntil',
|
|
'confidentiality': 'Confidentiality',
|
|
'status': 'Status'
|
|
}
|
|
for key, value in data_map.items():
|
|
if hasattr(element, value) and getattr(element, value):
|
|
setattr(info, key, getattr(element, value))
|
|
|
|
|
|
def create_document_references(self):
|
|
for element in self.file.by_type('IfcDocumentReference'):
|
|
reference = bpy.context.scene.BIMProperties.document_references.add()
|
|
data_map = {
|
|
'name': 'Identification',
|
|
'human_name': 'Name',
|
|
'location': 'Location',
|
|
'description': 'Description'
|
|
}
|
|
for key, value in data_map.items():
|
|
if hasattr(element, value) and getattr(element, value):
|
|
setattr(reference, key, getattr(element, value))
|
|
if element.ReferencedDocument:
|
|
reference.referenced_document = element.ReferencedDocument.Identification
|
|
|
|
def create_spatial_hierarchy(self):
|
|
if self.project['ifc'].IsDecomposedBy:
|
|
for rel_aggregate in self.project['ifc'].IsDecomposedBy:
|
|
self.add_related_objects(self.project['blender'], rel_aggregate.RelatedObjects)
|
|
|
|
def add_related_objects(self, parent, related_objects):
|
|
for element in related_objects:
|
|
if element.is_a('IfcSpace'):
|
|
continue
|
|
global_id = element.GlobalId
|
|
if global_id in self.existing_elements:
|
|
collection = self.existing_elements[global_id].users_collection[0]
|
|
self.spatial_structure_elements[global_id] = { 'blender': collection }
|
|
else:
|
|
collection = bpy.data.collections.new(self.get_name(element))
|
|
self.spatial_structure_elements[global_id] = { 'blender': collection }
|
|
parent.children.link(collection)
|
|
obj = self.create_product(element)
|
|
if obj:
|
|
collection.objects.link(obj)
|
|
del self.added_data[element.GlobalId]
|
|
if element.IsDecomposedBy:
|
|
for rel_aggregate in element.IsDecomposedBy:
|
|
self.add_related_objects(collection, rel_aggregate.RelatedObjects)
|
|
|
|
def create_aggregates(self):
|
|
rel_aggregates = [a for a in self.file.by_type('IfcRelAggregates')
|
|
if a.RelatingObject.is_a('IfcElement')]
|
|
for rel_aggregate in rel_aggregates:
|
|
self.create_aggregate(rel_aggregate)
|
|
|
|
def create_aggregate(self, rel_aggregate):
|
|
collection = bpy.data.collections.new(f'IfcRelAggregates/{rel_aggregate.id()}')
|
|
self.project['blender'].children.link(collection)
|
|
bpy.context.view_layer.layer_collection.children[self.project['blender'].name].children[collection.name].hide_viewport = True
|
|
element = rel_aggregate.RelatingObject
|
|
|
|
obj = bpy.data.objects.new('{}/{}'.format(element.is_a(), element.Name), None)
|
|
obj.instance_type = 'COLLECTION'
|
|
obj.instance_collection = collection
|
|
self.place_object_in_spatial_tree(element, obj)
|
|
self.add_element_attributes(element, obj)
|
|
self.add_element_classifications(element, obj)
|
|
self.add_element_document_relations(element, obj)
|
|
self.add_defines_by_type_relation(element, obj)
|
|
self.add_product_definitions(element, obj)
|
|
self.aggregates[element.GlobalId] = obj
|
|
|
|
def create_openings_collection(self):
|
|
collection = bpy.data.collections.new('IfcOpeningElements')
|
|
bpy.context.scene.collection.children.link(collection)
|
|
|
|
def get_name(self, element):
|
|
return '{}/{}'.format(element.is_a(), element.Name)
|
|
|
|
def purge_diff(self):
|
|
if not self.diff:
|
|
return
|
|
objects_to_purge = []
|
|
for obj in bpy.data.objects:
|
|
if 'GlobalId' not in obj.BIMObjectProperties.attributes:
|
|
continue
|
|
global_id = obj.BIMObjectProperties.attributes['GlobalId'].string_value
|
|
if global_id in self.diff['deleted'] \
|
|
or global_id in self.diff['changed'].keys():
|
|
objects_to_purge.append(obj)
|
|
bpy.ops.object.delete({'selected_objects': objects_to_purge})
|
|
|
|
def create_product_legacy(self, element):
|
|
if self.diff \
|
|
and element.GlobalId not in self.diff['added'] \
|
|
and element.GlobalId not in self.diff['changed'].keys():
|
|
return
|
|
|
|
self.ifc_import_settings.logger.info('Creating object {}'.format(element))
|
|
self.time = time.time()
|
|
if element.is_a('IfcOpeningElement'):
|
|
return
|
|
|
|
try:
|
|
representation_id = self.get_representation_id(element)
|
|
|
|
mesh_name = 'mesh-{}'.format(representation_id)
|
|
mesh = self.meshes.get(mesh_name)
|
|
if mesh is None \
|
|
or representation_id is None:
|
|
shape = ifcopenshell.geom.create_shape(self.settings, element)
|
|
self.ifc_import_settings.logger.info('Shape was generated in {:.2f}'.format(time.time() - self.time))
|
|
self.time = time.time()
|
|
|
|
mesh = self.create_mesh(element, shape)
|
|
self.meshes[mesh_name] = mesh
|
|
self.mesh_shapes[mesh_name] = shape
|
|
else:
|
|
self.ifc_import_settings.logger.info('Mesh reused.')
|
|
except:
|
|
self.ifc_import_settings.logger.error('Failed to generate shape for {}'.format(element))
|
|
return
|
|
|
|
obj = bpy.data.objects.new(self.get_name(element), mesh)
|
|
self.material_creator.create(element, obj, mesh)
|
|
obj.matrix_world = self.get_element_matrix(element, mesh_name)
|
|
self.add_element_attributes(element, obj)
|
|
self.add_element_classifications(element, obj)
|
|
self.add_element_document_relations(element, obj)
|
|
self.add_defines_by_type_relation(element, obj)
|
|
self.add_product_definitions(element, obj)
|
|
self.added_data[element.GlobalId] = obj
|
|
|
|
def add_element_document_relations(self, element, obj):
|
|
for association in element.HasAssociations:
|
|
if association.is_a('IfcRelAssociatesDocument'):
|
|
reference = obj.BIMObjectProperties.document_references.add()
|
|
data_map = {
|
|
'name': 'Identification',
|
|
'human_name': 'Name',
|
|
'description': 'Description',
|
|
'location': 'Location'
|
|
}
|
|
attributes = {}
|
|
for key, value in data_map.items():
|
|
if hasattr(association.RelatingDocument, value) \
|
|
and getattr(association.RelatingDocument, value):
|
|
setattr(reference, key, getattr(association.RelatingDocument, value))
|
|
|
|
def place_objects_in_spatial_tree(self):
|
|
for global_id, obj in self.added_data.items():
|
|
self.place_object_in_spatial_tree(self.file.by_guid(global_id), obj)
|
|
|
|
def place_object_in_spatial_tree(self, element, obj):
|
|
if hasattr(element, 'ContainedInStructure') \
|
|
and element.ContainedInStructure \
|
|
and element.ContainedInStructure[0].RelatingStructure:
|
|
container = element.ContainedInStructure[0].RelatingStructure
|
|
if container.is_a('IfcSpace'):
|
|
if container.GlobalId in self.added_data:
|
|
obj.BIMObjectProperties.relating_structure = self.added_data[container.GlobalId]
|
|
return self.place_object_in_spatial_tree(container, obj)
|
|
relating_structure_global_id = container.GlobalId
|
|
if relating_structure_global_id in self.spatial_structure_elements:
|
|
self.spatial_structure_elements[relating_structure_global_id]['blender'].objects.link(obj)
|
|
elif hasattr(element, 'Decomposes') \
|
|
and element.Decomposes:
|
|
collection = None
|
|
if element.Decomposes[0].RelatingObject.is_a('IfcProject'):
|
|
collection = bpy.data.collections.get(f'IfcProject/{element.Decomposes[0].RelatingObject.Name}')
|
|
elif element.Decomposes[0].RelatingObject.is_a('IfcSpatialStructureElement'):
|
|
global_id = element.Decomposes[0].RelatingObject.GlobalId
|
|
if global_id in self.spatial_structure_elements:
|
|
collection = self.spatial_structure_elements[global_id]['blender']
|
|
elif self.ifc_import_settings.should_import_aggregates:
|
|
collection = bpy.data.collections.get(f'IfcRelAggregates/{element.Decomposes[0].id()}')
|
|
else:
|
|
return self.place_object_in_spatial_tree(element.Decomposes[0].RelatingObject, obj)
|
|
if collection:
|
|
collection.objects.link(obj)
|
|
else:
|
|
self.ifc_import_settings.logger.error('An element could not be placed in the spatial tree {}'.format(element))
|
|
elif hasattr(element, 'HasFillings') \
|
|
and element.HasFillings:
|
|
bpy.data.collections.get('IfcOpeningElements').objects.link(obj)
|
|
else:
|
|
self.ifc_import_settings.logger.warning('Warning: this object is outside the spatial hierarchy')
|
|
bpy.context.scene.collection.objects.link(obj)
|
|
|
|
def add_element_attributes(self, element, obj):
|
|
attributes = element.get_info()
|
|
if element.is_a() in schema.ifc.elements:
|
|
applicable_attributes = [a['name'] for a in schema.ifc.elements[element.is_a()]['attributes']]
|
|
for key, value in attributes.items():
|
|
if key not in applicable_attributes \
|
|
or value is None:
|
|
continue
|
|
attribute = obj.BIMObjectProperties.attributes.add()
|
|
attribute.name = key
|
|
attribute.data_type = 'string'
|
|
attribute.string_value = str(self.cast_edge_case_attribute(element.is_a(), key, value))
|
|
|
|
def cast_edge_case_attribute(self, ifc_class, key, value):
|
|
if key == 'RefLatitude' or key == 'RefLongitude':
|
|
return self.dms2dd(*value)
|
|
return value
|
|
|
|
# TODO: migrate to ifcopenshell.util
|
|
def dms2dd(self, degrees, minutes, seconds, milliseconds=0):
|
|
dd = float(degrees) + float(minutes)/60 + float(seconds)/(3600)
|
|
return dd
|
|
|
|
def add_element_classifications(self, element, obj):
|
|
if not element.HasAssociations:
|
|
return
|
|
for association in element.HasAssociations:
|
|
if not association.is_a('IfcRelAssociatesClassification'):
|
|
continue
|
|
data = association.RelatingClassification
|
|
reference = obj.BIMObjectProperties.classifications.add()
|
|
data_map = {
|
|
'name': 'Identification', 'location': 'Location', 'human_name': 'Name',
|
|
'description': 'Description', 'sort': 'Sort'
|
|
}
|
|
if self.file.schema == 'IFC2X3':
|
|
data_map['name'] = 'ItemReference'
|
|
for key, value in data_map.items():
|
|
if hasattr(data, value) and getattr(data, value):
|
|
setattr(reference, key, getattr(data, value))
|
|
if hasattr(data, 'ReferencedSource') and data.ReferencedSource:
|
|
reference.referenced_source = self.get_referenced_source_name(data.ReferencedSource)
|
|
|
|
def get_referenced_source_name(self, element):
|
|
if not hasattr(element, 'ReferencedSource') or not element.ReferencedSource:
|
|
if element.is_a('IfcClassification'):
|
|
for filename, classification in self.classifications.items():
|
|
if classification.name == element.Name:
|
|
return filename
|
|
return element.Name
|
|
else:
|
|
return element.Identification
|
|
return self.get_referenced_source_name(element.ReferencedSource)
|
|
|
|
def get_element_matrix(self, element, mesh_name=None):
|
|
element_matrix = self.get_local_placement(element.ObjectPlacement)
|
|
|
|
if mesh_name:
|
|
# Blender supports reusing a mesh with a different transformation
|
|
# applied at the object level. In contrast, IFC supports reusing a mesh
|
|
# with a different transformation applied at the mesh level _as well as_
|
|
# the object level. For this reason, if the end-goal is to re-use mesh
|
|
# data, we must combine IFC's mesh-level transformation into Blender's
|
|
# object level transformation.
|
|
|
|
# The first step to do this is to _undo_ the mesh-level transformation
|
|
# from whatever shared mesh we are using, as it is not necessarily the
|
|
# same as the current mesh.
|
|
shared_shape_transformation = self.get_representation_cartesian_transformation(
|
|
self.file.by_id(self.mesh_shapes[mesh_name].product.id()))
|
|
if shared_shape_transformation:
|
|
shared_transform = self.get_cartesiantransformationoperator(shared_shape_transformation)
|
|
shared_transform.invert()
|
|
element_matrix = element_matrix @ shared_transform
|
|
|
|
# The next step is to apply the current element's mesh level
|
|
# transformation to our current element's object transformation
|
|
transformation = self.get_representation_cartesian_transformation(element)
|
|
if transformation:
|
|
element_matrix = self.get_cartesiantransformationoperator(transformation) @ element_matrix
|
|
|
|
element_matrix[0][3] *= self.unit_scale
|
|
element_matrix[1][3] *= self.unit_scale
|
|
element_matrix[2][3] *= self.unit_scale
|
|
|
|
return element_matrix
|
|
|
|
def get_body_representations(self, representations, matrix=None):
|
|
if matrix is None:
|
|
matrix = mathutils.Matrix()
|
|
results = []
|
|
for representation in representations:
|
|
if representation.RepresentationIdentifier == 'Body' \
|
|
and representation.RepresentationType == 'MappedRepresentation':
|
|
for item in representation.Items:
|
|
# TODO: Confirm if this transformation is right
|
|
transform = self.get_axis2placement(item.MappingSource.MappingOrigin)
|
|
if item.MappingTarget:
|
|
transform = transform @ self.get_cartesiantransformationoperator(item.MappingTarget)
|
|
results.extend(self.get_body_representations([item.MappingSource.MappedRepresentation],
|
|
transform @ matrix))
|
|
elif representation.RepresentationIdentifier == 'Body':
|
|
matrix[0][3] *= self.unit_scale
|
|
matrix[1][3] *= self.unit_scale
|
|
matrix[2][3] *= self.unit_scale
|
|
results.append({ 'raw': representation, 'matrix': matrix })
|
|
return results
|
|
|
|
def get_representation_id(self, element):
|
|
if not element.Representation:
|
|
return None
|
|
for representation in element.Representation.Representations:
|
|
if not representation.is_a('IfcShapeRepresentation'):
|
|
continue
|
|
if representation.RepresentationIdentifier == 'Body' \
|
|
and representation.RepresentationType != 'MappedRepresentation':
|
|
return representation.id()
|
|
elif representation.RepresentationIdentifier == 'Body':
|
|
return representation.Items[0].MappingSource.MappedRepresentation.id()
|
|
|
|
def get_representation_cartesian_transformation(self, element):
|
|
if not element.Representation:
|
|
return None
|
|
for representation in element.Representation.Representations:
|
|
if not representation.is_a('IfcShapeRepresentation'):
|
|
continue
|
|
if representation.RepresentationIdentifier == 'Body' \
|
|
and representation.RepresentationType == 'MappedRepresentation':
|
|
return representation.Items[0].MappingTarget
|
|
|
|
def get_geometry_type(self, element):
|
|
if hasattr(element, 'Representation'):
|
|
tree = self.file.traverse(element.Representation)
|
|
elif hasattr(element, 'RepresentationMaps'):
|
|
tree = []
|
|
for representation_map in element.RepresentationMaps:
|
|
tree.extend(self.file.traverse(representation_map))
|
|
representations = [e for e in tree if e.is_a('IfcRepresentation') \
|
|
and e.RepresentationIdentifier == 'Body' \
|
|
and e.RepresentationType != 'MappedRepresentation']
|
|
for representation in representations:
|
|
return representation.Items[0].is_a()
|
|
|
|
def create_mesh(self, element, shape, is_curve=False):
|
|
try:
|
|
if hasattr(shape, 'geometry'):
|
|
geometry = shape.geometry
|
|
else:
|
|
geometry = shape
|
|
|
|
if is_curve:
|
|
return self.create_curve(geometry)
|
|
|
|
mesh = bpy.data.meshes.new(geometry.id)
|
|
f = geometry.faces
|
|
e = geometry.edges
|
|
v = geometry.verts
|
|
vertices = [[v[i], v[i + 1], v[i + 2]]
|
|
for i in range(0, len(v), 3)]
|
|
faces = [[f[i], f[i + 1], f[i + 2]]
|
|
for i in range(0, len(f), 3)]
|
|
if faces:
|
|
edges = []
|
|
else:
|
|
edges = [[e[i], e[i + 1]]
|
|
for i in range(0, len(e), 2)]
|
|
mesh.from_pydata(vertices, edges, faces)
|
|
ios_materials = []
|
|
for mat in geometry.materials:
|
|
if mat.original_name():
|
|
ios_materials.append(mat.original_name())
|
|
else:
|
|
ios_materials.append(mat.name)
|
|
mesh['ios_materials'] = ios_materials
|
|
mesh['ios_material_ids'] = geometry.material_ids
|
|
mesh.BIMMeshProperties.geometry_type = self.get_geometry_type(element)
|
|
return mesh
|
|
except:
|
|
self.ifc_import_settings.logger.error('Could not create mesh for {}: {}'.format(element.GlobalId, element))
|
|
|
|
def create_curve(self, geometry):
|
|
curve = bpy.data.curves.new(geometry.id, type='CURVE')
|
|
curve.dimensions = '3D'
|
|
curve.resolution_u = 2
|
|
polyline = curve.splines.new('POLY')
|
|
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 = v1
|
|
v2 = vertices[edge[1]]
|
|
polyline.points.add(1)
|
|
polyline.points[-1].co = v2
|
|
return curve
|
|
|
|
def shape_to_mesh(self, shape):
|
|
if hasattr(shape, 'geometry'):
|
|
geometry = shape.geometry
|
|
else:
|
|
geometry = shape
|
|
f = geometry.faces
|
|
e = geometry.edges
|
|
v = geometry.verts
|
|
vertices = [[v[i], v[i + 1], v[i + 2]]
|
|
for i in range(0, len(v), 3)]
|
|
faces = [[f[i], f[i + 1], f[i + 2]]
|
|
for i in range(0, len(f), 3)]
|
|
if faces:
|
|
edges = []
|
|
else:
|
|
edges = [[e[i], e[i + 1]]
|
|
for i in range(0, len(e), 2)]
|
|
return (vertices, edges, faces)
|
|
|
|
def bmesh_from_pydata(self, verts=[], edges=[], faces=[]):
|
|
bm = bmesh.new()
|
|
[bm.verts.new(co) for co in verts]
|
|
bm.verts.index_update()
|
|
bm.verts.ensure_lookup_table()
|
|
if faces:
|
|
for face in faces:
|
|
bm.faces.new(tuple(bm.verts[i] for i in face))
|
|
bm.faces.index_update()
|
|
bm.faces.ensure_lookup_table()
|
|
if edges:
|
|
for edge in edges:
|
|
edge_seq = tuple(bm.verts[i] for i in edge)
|
|
try:
|
|
bm.edges.new(edge_seq)
|
|
except ValueError:
|
|
# edge exists!
|
|
pass
|
|
bm.edges.index_update()
|
|
bm.edges.ensure_lookup_table()
|
|
return bm
|
|
|
|
def a2p(self, o, z, x):
|
|
y = z.cross(x)
|
|
r = mathutils.Matrix((x, y, z, o))
|
|
r.resize_4x4()
|
|
r.transpose()
|
|
return r
|
|
|
|
def get_axis2placement(self, plc):
|
|
if plc.is_a('IfcAxis2Placement3D'):
|
|
z = mathutils.Vector(plc.Axis.DirectionRatios if plc.Axis else (0,0,1))
|
|
x = mathutils.Vector(plc.RefDirection.DirectionRatios if plc.RefDirection else (1,0,0))
|
|
o = plc.Location.Coordinates
|
|
else:
|
|
z = mathutils.Vector((0,0,1))
|
|
if plc.RefDirection:
|
|
x = mathutils.Vector(list(plc.RefDirection.DirectionRatios) + [0])
|
|
else:
|
|
x = mathutils.Vector((1,0,0))
|
|
o = list(plc.Location.Coordinates) + [0]
|
|
return self.a2p(o,z,x)
|
|
|
|
def get_cartesiantransformationoperator(self, plc):
|
|
x = mathutils.Vector(plc.Axis1.DirectionRatios if plc.Axis1 else (1,0,0))
|
|
z = x.cross(mathutils.Vector(plc.Axis2.DirectionRatios if plc.Axis2 else (0,1,0)))
|
|
o = plc.LocalOrigin.Coordinates
|
|
return self.a2p(o,z,x)
|
|
|
|
def get_local_placement(self, plc):
|
|
if plc is None:
|
|
return mathutils.Matrix()
|
|
if plc.PlacementRelTo is None:
|
|
parent = mathutils.Matrix()
|
|
else:
|
|
parent = self.get_local_placement(plc.PlacementRelTo)
|
|
return parent @ self.get_axis2placement(plc.RelativePlacement)
|
|
|
|
class IfcImportSettings:
|
|
def __init__(self):
|
|
self.logger = None
|
|
self.input_file = None
|
|
self.should_auto_set_workarounds = True
|
|
self.should_ignore_site_coordinates = False
|
|
self.should_ignore_building_coordinates = False
|
|
self.should_reset_absolute_coordinates = False
|
|
self.should_merge_materials_by_colour = False
|
|
self.should_import_curves = False
|
|
self.should_import_opening_elements = False
|
|
self.should_import_spaces = False
|
|
self.should_treat_styled_item_as_material = False
|
|
self.should_use_cpu_multiprocessing = False
|
|
self.should_import_native = False
|
|
self.should_use_legacy = False
|
|
self.should_merge_aggregates = False
|
|
self.should_merge_by_class = False
|
|
self.should_merge_by_material = False
|
|
self.should_import_aggregates = True
|
|
self.should_clean_mesh = True
|
|
self.diff_file = None
|
|
|
|
@staticmethod
|
|
def factory(context, input_file, logger):
|
|
scene_bim = context.scene.BIMProperties
|
|
settings = IfcImportSettings()
|
|
settings.input_file = input_file
|
|
settings.logger = logger
|
|
settings.diff_file = scene_bim.diff_json_file
|
|
settings.should_ignore_site_coordinates = scene_bim.import_should_ignore_site_coordinates
|
|
settings.should_ignore_building_coordinates = scene_bim.import_should_ignore_building_coordinates
|
|
settings.should_reset_absolute_coordinates = scene_bim.import_should_reset_absolute_coordinates
|
|
settings.should_import_curves = scene_bim.import_should_import_curves
|
|
settings.should_import_opening_elements = scene_bim.import_should_import_opening_elements
|
|
settings.should_import_spaces = scene_bim.import_should_import_spaces
|
|
settings.should_auto_set_workarounds = scene_bim.import_should_auto_set_workarounds
|
|
settings.should_treat_styled_item_as_material = scene_bim.import_should_treat_styled_item_as_material
|
|
settings.should_use_cpu_multiprocessing = scene_bim.import_should_use_cpu_multiprocessing
|
|
settings.should_import_native = scene_bim.import_should_import_native
|
|
settings.should_use_legacy = scene_bim.import_should_use_legacy
|
|
settings.should_import_aggregates = scene_bim.import_should_import_aggregates
|
|
settings.should_merge_aggregates = scene_bim.import_should_merge_aggregates
|
|
settings.should_merge_by_class = scene_bim.import_should_merge_by_class
|
|
settings.should_merge_by_material = scene_bim.import_should_merge_by_material
|
|
settings.should_merge_materials_by_colour = scene_bim.import_should_merge_materials_by_colour
|
|
settings.should_clean_mesh = scene_bim.import_should_clean_mesh
|
|
return settings
|