Lines Matching defs:ya
1081 double ya = yc - 4 * sy * (y1 - y2);
1090 ((y3 - y0) * (y1 - y2) < EP || yb * yb < ya * yc + EP));
1092 if (xa == 0.0 && ya == 0.0) { /* quadratic Bezier */
1101 ab = xa * yb - xb * ya;
1102 ac = xa * yc - xc * ya;
1113 cb = 8 * (xa - ya); /* init differences of 1st degree */
1114 dx = 27 * (8 * ab * (yb * yb - ya * yc) +
1115 ex * (ya + 2 * yb + yc)) / 64 - ya * ya * (xy - ya);
1119 xx = 3 * (3 * ab * (3 * yb * yb - ya * ya - 2 * ya * yc) -
1120 ya * (3 * ac * (ya + yb) + ya * cb)) / 4;
1123 xy = xa * ya * (6 * ab + 6 * ac - 3 * bc + cb);
1124 ac = ya * ya;
1138 ab = 6 * ya * ac;
1140 bc = 6 * ya * cb;
1200 long ya = yc - 4 * (y1 - y2);
1224 t1 = (double) (yb * yb - ya * yc);
1225 if (ya == 0) { /* vertical */
1230 t1 = ((double) yb - t2) / (double) ya;
1233 t1 = ((double) yb + t2) / (double) ya;
1255 t2 * (t1 * (t1 * (double) ya - (double) (2 * yb)) + (double)
1261 t1 * (t2 * (t2 * (double) ya - (double) (2 * yb)) + (double)
1265 fy0 -= fy3 = (t2 * (t2 * ((double) (3 * yb) - t2 * (double) ya) -