Lines Matching refs:dx
1102 int dx, dy, incr1, incr2, d, x, y, xend, yend, xdirflag, ydirflag;
1122 dx = abs (x2 - x1);
1125 if (dx == 0) {
1133 if (dy <= dx) {
1136 if ((dx == 0) && (dy == 0)) {
1141 double ac = cos (atan2 (dy, dx));
1151 d = 2 * dy - dx;
1153 incr2 = 2 * (dy - dx);
1205 double as = sin (atan2 (dy, dx));
1215 d = 2 * dx - dy;
1216 incr1 = 2 * dx;
1217 incr2 = 2 * (dx - dy);
1300 long dx, dy,tmp;
1352 dx = x2 - x1;
1355 if (dx == 0 && dy == 0) {
1358 if (abs(dx) > abs(dy)) {
1359 if (dx < 0) {
1366 dx = x2 - x1;
1371 inc = (dy * 65536) / dx;
1388 dx = x2 - x1;
1393 inc = (dx * 65536) / dy;
1409 int dx, dy, incr1, incr2, d, x, y, xend, yend, xdirflag, ydirflag;
1416 dx = abs(x2 - x1);
1418 if (dy <= dx) {
1422 double as = sin(atan2(dy, dx));
1428 wid = (int)(thick * sin(atan2(dy, dx)));
1431 d = 2 * dy - dx;
1433 incr2 = 2 * (dy - dx);
1472 double as = sin (atan2 (dy, dx));
1480 d = 2 * dx - dy;
1481 incr1 = 2 * dx;
1482 incr2 = 2 * (dx - dy);