mtllib materials.mtl v -0.1450001 -0.03999996 -0.28 v 0.145 -0.04000008 -0.2800001 v 0.145 0.03999996 -0.2800001 v -0.1450001 0.04000008 -0.28 v -0.145 -0.03999996 0.28 v -0.145 0.04000008 0.28 v 0.1450001 0.03999996 0.28 v 0.1450001 -0.04000008 0.28 vn -1.192093E-07 0 -1 vn 1.192093E-07 0 1 vn -1.748456E-07 -1 0 vn 1.748456E-07 1 0 vn -1 1.748456E-07 1.192093E-07 vn 1 -1.748456E-07 -1.192093E-07 usemtl mat11 f 4//1 3//1 2//1 1//1 f 8//2 7//2 6//2 5//2 f 2//3 8//3 5//3 1//3 f 6//4 7//4 3//4 4//4 f 5//5 6//5 4//5 1//5 f 3//6 7//6 8//6 2//6