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ifcopenshell.util.shape.get_normals

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Andrej730
2024-09-20 21:22:30 +05:00
parent 95e76c3ab9
commit d4df21c4be
1 changed files with 10 additions and 0 deletions
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src/ifcopenshell-python/ifcopenshell/util/shape.py
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@@ -290,6 +290,16 @@ def get_material_colors(geometry: ShapeType) -> npt.NDArray[np.float64]:
return np.frombuffer(geometry.colors_buffer, dtype="d").reshape(-1, 4)
def get_normals(geometry: ShapeType) -> npt.NDArray[np.float64]:
"""Get vertex normals as a numpy array.
See geometry settings documentation for settings that affect normals.
:return: A numpy array listing normal for each shape vertex.
"""
return np.frombuffer(geometry.normals_buffer, dtype="d").reshape(-1, 3)
def get_representation_item_ids(geometry: ShapeType) -> npt.NDArray[np.int32]:
"""Get representation item ids for the geometry faces."""
return np.frombuffer(geometry.item_ids_buffer, dtype="i")