历史上阴影检测算法的归纳总结，对初学和使用阴影检测很有帮助- The history of the shadow detection algorithm summary of the learning and use of shadow detection very helpful

openGL下的飞机小游戏，包含自动地图生成，阴影，天空体，碰撞检测等功能-aircraft under openGL games, including automatic map generation, shadows, sky, body, collision detection and other functions

阴影检测，本实验用于消除车辆底盘阴影，效果明显(Shadow detection, this experiment is used to eliminate vehicle chassis shadow, the effect is obvious)