ply format ascii 1.0 comment created by MATLAB ply_write element vertex 5 property float x property float y property float z element face 6 property list uchar char vertex_indices end_header 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 1.000000 1.000000 0.000000 0.000000 1.000000 0.000000 0.500000 0.500000 1.600000 3 1 0 3 3 1 3 2 3 0 1 4 3 0 4 3 3 3 4 2 3 1 2 4