Method average_many_vectors_v3d

pyrender.py:270–273

(vectors)

        Average all normals on each vertex, stored in self.svn and self.faces[:][3]
        """
        def average_many_vectors_v3d(vectors):
            # transformed_vecs = [(x1, x2, ...), (y1, y2, ...), (z1, z2, ...)]
            transformed_vecs = tuple(zip(*tuple(zip(*vectors))[0]))
            return normalize_v3d((sum(transformed_vecs[0]), sum(transformed_vecs[1]), sum(transformed_vecs[2])))
        if self.faces[0][2] is None:
            self.calculate_face_normals()
        # v_vn = {v: [([nx, ny, nz], face_index, vertex_index_in_a_face), (...)],