Lines Matching defs:ab
1083 double ab, ac, bc, cb, xx, xy, yy, dx, dy, ex, *pxy;
1101 ab = xa * yb - xb * ya;
1104 ex = ab * (ab + ac - 3 * bc) + ac * ac; /* P0 part of self-intersection loop? */
1108 ab *= f;
1112 xy = 9 * (ab + ac + bc) / 8;
1114 dx = 27 * (8 * ab * (yb * yb - ya * yc) +
1116 dy = 27 * (8 * ab * (xb * xb - xa * xc) -
1119 xx = 3 * (3 * ab * (3 * yb * yb - ya * ya - 2 * ya * yc) -
1121 yy = 3 * (3 * ab * (3 * xb * xb - xa * xa - 2 * xa * xc) -
1123 xy = xa * ya * (6 * ab + 6 * ac - 3 * bc + cb);
1127 18 * xb * yb * ab) / 8;
1138 ab = 6 * ya * ac;
1157 xx += ab;