To display animations with raster systems, animated objects (which may consist of graphical primitives such as lines, polygons, and so on) must be scan-converted into their pixmap in the frame buffer.
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- 为了在光栅系统中显示动画,必须将运动物体(由如线,多边形这样的图元组成)经扫描转换变为可在帧缓存放的位图。