openGL 基于八叉树的图形编程，计算机图形学作业-openGL based on octree graphics programming, computer graphics work

空间八叉树，用opengl实现，测试样例为一个空间八面体，用不同的角度及片元显示-Octree space, using opengl to achieve, test sample for a space octahedron, with different angles and the film element shows