Fig. 3From: 3D B-Rep meshing for real-time data-based geometric parametric analysisTopological properties and pants decomposition of a double torus. a Triangulated genus-2 surface without boundaries has Euler characteristic \(\chi =2-2g-b=-2\). b Pants decomposition provides two pants (gray and blue meshes) by cutting along handle loops and using symmetry. Homology basis is composed by two handle loops and two tunnel loops respectively depicted in red and greenBack to article page