This class computes the traveling time T using the fast marching method for arbitrary triangulated meshes. If the equation is solved multiple times, computation time is saved by re-using unchanged values. The quality of the result depends on the quality of the triangulation. For a high accuracy the triangulation should not contain too many non-acute triangles. @param the type of the vertices of the triangulation @param the type of the half-edges of the triangulation @param the type of the faces of the triangulation @author Benedikt Zoennchen