ply
format ascii 1.0
element vertex 11
property float x
property float y
property float z
element face 11
property list uchar int vertex_indices
end_header
0 1 0
0 3 0
2 0 0
2 2 0
2 4 0
3 2 10
4 1.8 0
4 2.2 0
6 0 0
6 2 0
6 4 0
3 0 2 3
3 0 3 1
3 1 3 4
3 2 6 3
3 3 6 5
3 3 5 7
3 3 7 4
3 5 6 7
3 6 8 9
3 6 9 7
3 7 9 10