国外一个计算机图形学课程的作业源代码，输入*.obj文件中的三角形网格，构造模型的半边数据结构，使用动态数组和哈希表，提取棱边并用opengl突出显示。-A half-edge mesh adjacency data structure is provided, along with a very simple .obj mesh parser. Throughout this code you are asked to consider the efficiency of various me