getTangentSpace(vertices=None,
normals=None,
uvs=None,
triangles=None,
orientation=False,
orthogonal=True)
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Calculate tangent space data.
>>> vertices = [(0,0,0), (0,1,0), (1,0,0)]
>>> normals = [(0,0,1), (0,0,1), (0,0,1)]
>>> uvs = [(0,0), (0,1), (1,0)]
>>> triangles = [(0,1,2)]
>>> getTangentSpace(vertices = vertices, normals = normals, uvs = uvs, triangles = triangles)
([(0.0, 1.0, 0.0), (0.0, 1.0, 0.0), (0.0, 1.0, 0.0)], [(1.0, 0.0, 0.0), (1.0, 0.0, 0.0), (1.0, 0.0, 0.0)])
- Parameters:
vertices - A list of vertices (triples of floats/ints).normals - A list of normals (triples of floats/ints).uvs - A list of uvs (pairs of floats/ints).triangles - A list of triangle indices (triples of ints).orientation - Set to True to return orientation (this is used by
for instance Crysis). - Returns:
- Two lists of vectors, tangents and binormals. If C{orientation}
is True, then returns an extra list with orientations (containing
floats which describe the total signed surface of all faces sharing
the particular vertex).
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