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Get side area lets you choose the side axis now in util.shape.

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Dion Moult
2023-03-09 17:48:42 +11:00
parent 93b44b43a5
commit 3e2ca328d2
1 changed files with 3 additions and 2 deletions
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src/ifcopenshell-python/ifcopenshell/util/shape.py
+3 -2
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@@ -113,7 +113,7 @@ def get_area(geometry):
return get_area_vf(vertices, faces)
def get_side_area(geometry):
def get_side_area(geometry, axis="Y"):
verts = geometry.verts
faces = geometry.faces
vertices = np.array([[verts[i], verts[i + 1], verts[i + 2]] for i in range(0, len(verts), 3)])
@@ -128,7 +128,8 @@ def get_side_area(geometry):
triangle_normals = triangle_normals / np.linalg.norm(triangle_normals, axis=1)[:, np.newaxis]
# Find the faces with a normal vector pointing in the desired +Y normal direction
filtered_face_indices = np.where(triangle_normals[:, 1] > tol)[0]
axis = {"X": 0, "Y": 1, "Z": 2}[axis]
filtered_face_indices = np.where(triangle_normals[:, axis] > tol)[0]
filtered_faces = faces[filtered_face_indices]
return get_area_vf(vertices, filtered_faces)