filename => the full path of the stl file filetype => 0 for binary, 1 for ascii (other values raise an error)
points => the verticies of the triangles normals => the normals of the triangles
filename => the full path of the stl file filetype => 0 for binary, 1 for ascii (other values raise an error)
points => the verticies of the triangles normals => the normals of the triangles