A Simple Compression of Tri-Quad Meshes with Handles

Abstract

This paper extends a mesh compression method to deal with meshes composed of triangular and quadrilateral faces with genus. The proposed method is very useful given the fact that many CAD meshes have these characteristics. A quad extension has been introduced to the original EdgeBreaker encoding and decoding algorithm. The modification is simple and amounts to a case analysis of the possible compression labels assigned to two triangles originating from splitting a quadrilateral face. The new method entails to augmenting the C,L,E,R,S EdgeBreaker codes with the additional labels c,l,s.