ply
format ascii 1.0
comment created by MATLAB ply_write
element vertex 5
property float x
property float y
property char z
element face 6
property list uchar char vertex_indices
end_header
1.000000 1.000000 6 
3.000000 0.000000 4 
0.000000 0.000000 4 
0.000000 3.000000 4 
1.500000 0.500000 0 
3 0 2 1 
3 0 1 3 
3 0 3 2 
3 1 2 4 
3 3 1 4 
3 2 3 4