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Shape builder can now created triangulated face sets

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This commit is contained in:
Dion Moult
2025-02-15 16:10:12 +11:00
parent a63c8e1d70
commit a0fa861b92
1 changed files with 16 additions and 0 deletions
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src/ifcopenshell-python/ifcopenshell/util/shape_builder.py
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@@ -1305,6 +1305,22 @@ class ShapeBuilder:
]
return self.file.createIfcFacetedBrep(self.file.createIfcClosedShell(faces))
def triangulated_face_set(
self, points: SequenceOfVectors, faces: Sequence[Sequence[int]]
) -> ifcopenshell.entity_instance:
"""
Generate an IfcTriangulatedFaceSet
Note that this is not available in IFC2X3.
:param points: list of 3d coordinates
:param faces: list of triangles consisted of point indices (points indices starting from 0)
:return: IfcTriangulatedFaceSet
"""
ifc_points = self.file.createIfcCartesianPointList3D(ifc_safe_vector_type(points))
ifc_faces = [[i + 1 for i in face][:3] for face in faces]
return self.file.createIfcTriangulatedFaceSet(Coordinates=ifc_points, CoordIndex=ifc_faces)
def polygonal_face_set(
self, points: SequenceOfVectors, faces: Sequence[Sequence[int]]
) -> ifcopenshell.entity_instance: