ply
format ascii 1.0
element vertex 8
property float x
property float y
property float z
element face 6
property list uchar int vertex_index
end_header

0.0 0.0 0.0
1.0 0.0 0.0
1.0 1.0 0.0
0.0 1.0 0.0
0.0 0.0 1.0
1.0 0.0 1.0
1.0 1.0 1.0
0.0 1.0 1.0

4 0 1 5 4
4 1 2 6 5
4 2 3 7 6
4 3 0 4 7
4 0 3 2 1
4 4 5 6 7