Archive 2015 Mar-3rd UVa 805 - Polygon Intersections 射線法幾何搜索 2014 Dec-27th UVa 881 - Points, Polygons and Containers 射線法幾何 Nov-22nd UVa 10907 - Art Gallery 射線法幾何極角掃描計算幾何 Nov-18th UVa 10867 - Cutting a Polygon 射線法幾何鬼畜