斜率为0～1和大于1的Bresenham画线程序，将该算法程序扩展到任一八分圆坐标空间图，从而形成一般的Bresenham画线算法。-slope of 0 to 1 and more than a line drawing of Bresenham procedures, the extension of this algorithm, arrived on January 8 pm Yuan map coordinates space, thus forming a general line drawing Bresenham algorithm.