计算几何模版
............\三角形.doc
............\两凸包最短距离.doc
............\凸多边形交.doc
............\半平面交.doc
............\单位圆覆盖.doc
............\多边形重心.doc
............\小函数模版.doc
............\矩形覆盖.doc
............\经纬度.doc