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Support multiple materials per object on IFC export

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Dion Moult
2020-03-18 14:22:01 +11:00
parent f24db3402f
commit 130d732745
1 changed files with 19 additions and 12 deletions
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src/ifcblenderexport/blenderbim/export_ifc.py
+19 -12
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@@ -1549,14 +1549,17 @@ class IfcExporter():
for styled_item in self.ifc_parser.styled_items: for styled_item in self.ifc_parser.styled_items:
product = self.ifc_parser.products[ product = self.ifc_parser.products[
self.ifc_parser.get_product_index_from_raw_name( self.ifc_parser.get_product_index_from_raw_name(
styled_item['related_product_name'])]['ifc'] styled_item['related_product_name'])]
representation_items = [] material_slots = {}
if product.Representation: if product['ifc'].Representation:
for representation in product.Representation.Representations: for representation in product['ifc'].Representation.Representations:
for item in representation.Items: for mapped_item in representation.Items:
representation_items.append(item) items = mapped_item[0].MappedRepresentation.Items
for representation_item in representation_items: for i, item in enumerate(items):
styled_item['ifc'] = self.create_styled_item(styled_item, representation_item) material_slots[product['raw'].material_slots[i].name] = item
for styled_item_name, representation_item in material_slots.items():
if styled_item_name == styled_item['attributes']['Name']:
styled_item['ifc'] = self.create_styled_item(styled_item, representation_item)
def create_styled_item(self, item, representation_item=None): def create_styled_item(self, item, representation_item=None):
styles = [] styles = []
@@ -1821,7 +1824,6 @@ class IfcExporter():
def create_representation(self, representation): def create_representation(self, representation):
self.ifc_vertices = [] self.ifc_vertices = []
self.ifc_edges = [] self.ifc_edges = []
self.ifc_faces = []
if representation['is_generated'] \ if representation['is_generated'] \
and representation['subcontext'] == 'Box': and representation['subcontext'] == 'Box':
return self.file.createIfcRepresentationMap(self.origin, return self.file.createIfcRepresentationMap(self.origin,
@@ -2174,16 +2176,21 @@ class IfcExporter():
if not representation['is_parametric']: if not representation['is_parametric']:
mesh = representation['raw_object'].evaluated_get(bpy.context.evaluated_depsgraph_get()).to_mesh() mesh = representation['raw_object'].evaluated_get(bpy.context.evaluated_depsgraph_get()).to_mesh()
self.create_vertices(mesh.vertices) self.create_vertices(mesh.vertices)
ifc_faces = [None] * len(representation['raw_object'].material_slots)
for i, value in enumerate(ifc_faces):
ifc_faces[i] = []
if not ifc_faces:
ifc_faces = [[]]
for polygon in mesh.polygons: for polygon in mesh.polygons:
self.ifc_faces.append(self.file.createIfcFace([ ifc_faces[polygon.material_index].append(self.file.createIfcFace([
self.file.createIfcFaceOuterBound( self.file.createIfcFaceOuterBound(
self.file.createIfcPolyLoop([self.ifc_vertices[vertice] for vertice in polygon.vertices]), self.file.createIfcPolyLoop([self.ifc_vertices[vertice] for vertice in polygon.vertices]),
True)])) True)]))
items = [self.file.createIfcFacetedBrep(self.file.createIfcClosedShell(f)) for f in ifc_faces]
return self.file.createIfcShapeRepresentation( return self.file.createIfcShapeRepresentation(
self.ifc_rep_context[representation['context']][representation['subcontext']][ self.ifc_rep_context[representation['context']][representation['subcontext']][
representation['target_view']]['ifc'], representation['target_view']]['ifc'],
representation['subcontext'], 'Brep', representation['subcontext'], 'Brep', items)
[self.file.createIfcFacetedBrep(self.file.createIfcClosedShell(self.ifc_faces))])
def create_vertices(self, vertices): def create_vertices(self, vertices):
self.ifc_vertices.extend( self.ifc_vertices.extend(