How to visualize the output from Compute_Ridges_Umbilics example?

[NahomKidane]

Hi

I am currently testing the crest and umbilics estimation algorithm on CGAL. I compile the example (Compute_Ridges_Umbilics), but I don't know how to visualize the results and get similar images as below. Can I use the polyhedron package demo?

Thank you!