The result can't be supported by third_program?

[XiaXingLuo]

@danielTobon43
Hi! Thanks for your grate work. I use your code get one mesh, when I put it into the CloudCompare meeting warning "some faces are not triangular", moreover I use rply library to read the result, meeting wrong "Read PLY failed: A polygon in the mesh could not be decomposed into triangles.RPly: Aborted by user"
Here is my experiment data.
parasaurolophus2.zip