ply
format ascii 1.0
element vertex 8
property double x
property double y
property double z
element face 12
property list uchar uchar vertex_indices
end_header
-1 -1 -1
-1 -1 1
-1 1 -1
-1 1 1
1 -1 -1
1 -1 1
1 1 -1
1 1 1
3 7 3 1
3 7 1 5
3 4 0 2
3 4 2 6
3 7 6 2
3 7 2 3
3 3 2 0
3 3 0 1
3 1 0 4
3 1 4 5
3 5 4 6
3 5 6 7