A B-rep Model Decomposition Approach Based on Face Shell Shrinking
Ma Lu, Cad Support · Chinese Journal of Computers · 2009
Decomposition of 3D solid models with B-rep format is a crucial problem in transforming the models to CSG format,and it also benefits shape and structure analysis of these models. Here,a face-shell shrinking approach for model decomposition is presented. First,cutting loops of a B-rep model are recognized through local shape analysis,then the B-rep model is decomposed into multiple face shells along edges in the cutting loops,and finally,the face shells are transformed into solids by shrinking the cutting loops on the faces. With the above three steps,B-rep models with quadric surfaces can be effectively decomposed into the composition of positive and negative volumes. At the same time,the experimental results show that this approach is efficient.