ply
format ascii 1.0
comment VCGLIB generated
element vertex 5
property float x
property float y
property float z
element face 3
property list uchar int vertex_indices
end_header
1 -1 0 
-1 1 0 
-1 -1 0 
1 1 0 
0 2 0 
3 0 1 2 
3 0 3 1 
3 1 3 4