高鲁棒性的六面体重构法的网格简化

包含多个第三方库:vcg、eigen等,所以资源较大 This repository contains the meshing software developed as part of the publication Robust Structure Simplification for Hex Re-meshing Xifeng Gao, Daniele Panozzo, Wenping Wang, Zhigang Deng, Guoning Chen In ACM Transactions on Graphics (Proceedings of SIGGRAPH AS