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Update export_ifc.py

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Fix for objects where material index > material slots
Keep material indexes in material slots range (index % slots is blender default behavior)
Fallback to a minimal slot count to 1 for objects without material slots
This commit is contained in:
s-leger
2020-06-25 11:07:21 +02:00
committed by Dion Moult
parent 2132706c6e
commit fd283b9c84
1 changed files with 3 additions and 6 deletions
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src/ifcblenderexport/blenderbim/bim/export_ifc.py
+3 -6
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@@ -2533,13 +2533,10 @@ class IfcExporter():
if not representation['is_parametric']:
mesh = representation['raw_object'].evaluated_get(bpy.context.evaluated_depsgraph_get()).to_mesh()
self.create_vertices(mesh.vertices)
ifc_raw_items = [None] * len(representation['raw_object'].material_slots)
for i, value in enumerate(ifc_raw_items):
ifc_raw_items[i] = []
if not ifc_raw_items:
ifc_raw_items = [[]]
n_slots = max(1, len(representation['raw_object'].material_slots))
ifc_raw_items = [[]] * n_slots
for polygon in mesh.polygons:
ifc_raw_items[polygon.material_index].append(self.file.createIfcFace([
ifc_raw_items[polygon.material_index % n_slots].append(self.file.createIfcFace([
self.file.createIfcFaceOuterBound(
self.file.createIfcPolyLoop([self.ifc_vertices[vertice] for vertice in polygon.vertices]),
True)]))