1 2 3 4
0.0 0.0 1.0 1.0 0.0 1.0 0.0 1.0 1.0 1.0 0.0 1.0 0.0 1.0 1.0 1.0 1.0 1.0 0.0 0.0 -1.0 -1.0 0.0 -1.0 0.0 -1.0 -1.0 -1.0 0.0 -1.0 0.0 -1.0 -1.0 -1.0 -1.0 -1.0