Function _proj_transform_vec

lib/mpl_toolkits/mplot3d/proj3d.py:161–166

(vec, M)

def _proj_transform_vec(vec, M):
    vecw = np.dot(M, vec.data)
    ts = vecw[0:3]/vecw[3]
    if np.ma.isMA(vec):
        ts = np.ma.array(ts, mask=vec.mask)
    return ts[0], ts[1], ts[2]


def _scale_proj_transform_vectors(vecs, axes):