Description: According to the regional polygon filling principle can be extended to the domain filled round, a round of special attributes, can be filled under any wishes to the central pixel and the distance is greater than or less than the radius to determine whether the circle or round, realize the procedure is as follows; Midpoint Circle Algorithm border procedures : void CArea_FillData : : MidpointCircle (int xc. yc int, int r, int color) (//painting of the eighth round int x, y, d x = 0 y = r d = 1-r WholeCircle (xc, yc, x, y, color) while (x
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