ply
format ascii 1.0
comment single tetrahedron with colored faces
element vertex 4
comment tetrahedron vertices
property float x
property float y
property float z
element face 4
property list uchar int vertex_indices
property uchar red
property uchar green
property uchar blue
end_header
0 0 0
0 1 1
1 0 1
1 1 0
3 0 1 2 255 255 255
3 0 2 3 255 0 0
3 0 1 3 0 255 0
3 1 2 3 0 0 255