一个类似磁盘扫描得界面，很酷得哦，值得大家去研究-a disk scan in a similar interface, cool in, oh, we should study

理解扫描转换多边形的扫描线算法原理 利用扫描线算法实现多边形的扫描转换 -Understand the scan line polygon scan conversion algorithm principle The scan line algorithm polygon scan conversion