def load_ply(self, filename):
Mesh.load_ply(self, filename)
v_array=np.array(self.verts, dtype=np.float32)
bbox=(np.min(v_array,0), np.max(v_array,0) )
self.v_array = v_array.astype(np.float32)
self.bbox = bbox
self.zoom=1.0/la.norm(bbox[1])
self.tri_array = np.array(self.tris, dtype=np.uint32)
self.n_array = self.vert_props['normal'].astype(np.float32)
logging.debug( 'done matrix {}'.format(self.zoom) )
return self.zoom
