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[kyungjoo <>]

I tried very simple example of sphere mesh on the example.
What I want is almost uniform surface mesh on the sphere. I tried and make
many combinations, but I dont' get a nice one. Those parameters are
dependent on the radius of sphere. 
Could you give me a pointer how I can tune ?

  // defining the surface
  Surface_3 surface(sphere_function,             // pointer to function
                    Sphere_3(CGAL::ORIGIN, 2.)); // bounding sphere
  // Note that "2." above is the *squared* radius of the bounding sphere!

  // defining meshing criteria
  CGAL::Surface_mesh_default_criteria_3<Tr> criteria(30.,  // angular bound
                                                     0.1,  // radius bound
                                                     0.1); // distance bound
  // meshing surface
  CGAL::make_surface_mesh(c2t3, surface, criteria,
CGAL::Non_manifold_tag());




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