Lines Matching defs:sy
910 int sx, sy, x0, y0, x1, y1, r, k;
922 sy = vy < 0 ? -ONE : ONE;
927 sy = cvRound(vy*ONE/fabs(vx));
937 y0 += min_radius * sy;
939 for( x1 = x0, y1 = y0, r = min_radius; r <= max_radius; x1 += sx, y1 += sy, r++ )
949 y0 -= min_radius * sy;
950 sx = -sx; sy = -sy;
