The class Delaunay_mesh_criteria_2<CDT> is a model for the MeshingCriteria_2 concept. The shape criterion on triangles is given by a bound $$B such that for good triangles $$(r)/(l) B where $$l is the shortest edge length and $$r is the circumradius of the triangle. By default, $$B=sqrt(2), which is the best bound one can use with the guarantee that the refinement algorithm will terminate. The upper bound $$B is related to a lower bound $$_{min} on the minimum angle in the triangle:
$$ sin$$ _{min} = (1)/(4 B^{2})
so $$B=sqrt(2) corresponds to $$_{min} 20.7 degrees.
#include <CGAL/Delaunay_mesh_criteria_2.h>
 
Default constructor. $$B=sqrt(2).
 
 
Construct
a traits class with bound $$B=sqrt((1)/(4 b)).
