Lines Matching refs:ellipse_y
2703 * ellipse_y w^2 w^2
2705 * compute the derivative with-respect-to ellipse_y and solve
2708 * (w^2 - h^2) ellipse_y^3 + h^4 y
2710 * h w ellipse_y^2 sqrt (h^2 - ellipse_y^2)
2713 * ellipse_y = ( ---------- ) ^ (1/3)
2777 double ellipse_y, x;
2781 ellipse_y = hookEllipseY (scan_y, bound, acc, left);
2782 if (boundedLe (ellipse_y, bound->ellipse)) {
2787 maxMin = ellipse_y*ellipse_y*ellipse_y * acc->h2mw2 -
2788 acc->h2 * scan_y * (3 * ellipse_y*ellipse_y - 2*acc->h2);
2790 if (ellipse_y == 0)
2792 x = (acc->h2 * scan_y - ellipse_y * acc->h2mw2) *
2793 sqrt (acc->h2 - ellipse_y * ellipse_y) /
2794 (def->h * def->w * ellipse_y);