Lines Matching defs:x0
567 double xi, yi, xi_1, yi_1, x0, y0, dxy, sk, sk1, t;
588 a00 = x0 = y0 = xi_1 = yi_1 = 0;
620 x0 = xi_1;
638 dxy = xi * y0 - x0 * yi;
648 x0 = xi;
670 dxy = x_s * y0 - x0 * y_s;
680 x0 = x_s;
697 xi = x0;
790 double x0, y0, idet, scale, offx = 0, offy = 0;
903 | a b/2 | * | x0 | + | d/2 | = |0 |
928 x0 = (-d * c + e * b * 0.5) * 2.;
932 box->center.x = (float)(x0 + offx);
935 // offset ellipse to (x0,y0)
936 // new f == F(x0,y0)
937 f += a * x0 * x0 + b * x0 * y0 + c * y0 * y0 + d * x0 + e * y0;
