The algorithm foresees the pixels which will be activated in a rasterline and implements parallel filling pixels.
在配有块写入图形存储器的系统中，该算法可以实现并行填充象素。
2
Digital raster graphic(DRG) and digital line graphic(DLG) are two digital maps that can be taken cheaply, and DLG is a commonest data format now, it is the main data source of GIS.
The different information is implemented to clear and steadily display by using of time-shared display with line by line scanning and interlaced scanning in a raster picture.