说明：  区域填充和影线填充原理,算法和实现 图形几何变换,投影变换和视向变换的方法和实现 直线段,多边形裁剪算法和实现 曲线生成原理,算法和实现 常用的消隐算法
(area filling and filling hatched theory, algorithms and graphic geometric transformation, and visual projection transformation to transform the methods and linear, polygon clipping algorithm and the realization Curve theory, algorithms and implementation of the commonly used algorithms blanking)