Lines Matching refs:dx
85 int dx; /* local storage */ \
93 dx = (x2) - xStart; \
94 if (dx < 0) { \
95 m = dx / (dy); \
97 incr1 = -2 * dx + 2 * (dy) * m1; \
98 incr2 = -2 * dx + 2 * (dy) * m; \
99 d = 2 * m * (dy) - 2 * dx - 2 * (dy); \
101 m = dx / (dy); \
103 incr1 = 2 * dx - 2 * (dy) * m1; \
104 incr2 = 2 * dx - 2 * (dy) * m; \
105 d = -2 * m * (dy) + 2 * dx; \