1714     function bezlen(x1, y1, x2, y2, x3, y3, x4, y4, z) {  argument
1727                 ybase = base3(ct, y1, y2, y3, y4),
1733     function getTatLen(x1, y1, x2, y2, x3, y3, x4, y4, ll) {  argument
1734         if (ll < 0 || bezlen(x1, y1, x2, y2, x3, y3, x4, y4) < ll) {
1742         l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
1746             l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
1750     function intersect(x1, y1, x2, y2, x3, y3, x4, y4) {  argument
1754             mmax(y1, y2) < mmin(y3, y4) ||
1755             mmin(y1, y2) > mmax(y3, y4)
1759         var nx = (x1 * y2 - y1 * x2) * (x3 - x4) - (x1 - x2) * (x3 * y4 - y3 * x4),
1760             ny = (x1 * y2 - y1 * x2) * (y3 - y4) - (y1 - y2) * (x3 * y4 - y3 * x4),
1761             denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4);
1777             py2 < +mmin(y3, y4).toFixed(2) ||
1778             py2 > +mmax(y3, y4).toFixed(2)