ply
format ascii 1.0          
element vertex 8          
property float32 x         
property float32 y         
property float32 z         
element face 6             
property list uint8 int32 vertex_index 
end_header
0 0 0
0 0 1
0 1 1
0 1 0
1 0 0
1 0 1
1 1 1
1 1 0
4 0 1 2 3
4 7 6 5 4
4 0 4 5 1
4 1 5 6 2
4 2 6 7 3
4 3 7 4 0
