Searched refs:dda (Results 1 – 1 of 1) sorted by relevance
109 #define SETUP_DDA(xs,ys,xe,ye,dda) \ argument114 dda.xi = xs; \118 dda.mi = result; \119 dda.mf = 2*( do_remain(dx,dy) ); \120 dda.xf = -dy; \121 dda._2dy = 2 * dy; \122 if (dda.mf < 0) { \123 dda.mf += 2 * ABS(dy); \124 dda.mi--; \128 dda.mi = 0; \[all …]