std::vector arr; 内含4个坐标元素. 求四个边v0-v1, v1-v2, v2-v3, v3-v0连起来的是一个四边形，先不考虑凹凸，允许非共面。
More About Us>>
3d display Ads blending c++ differential geometry everything graphics image interesting stuff modeling new seminar patch question SIGGRAPH Research Subdivision tech 实验室 有趣的东西 结婚照 问题 Study Notes (20) Technology (3) 随笔小扎 (10)
WP Cumulus Flash tag cloud by Roy Tanck and Luke Morton requires Flash Player 9 or better.
