5386     function getPointAtSegmentLength(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length) {  argument
5388             return bezlen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y);
5390             return findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y,
5391                 getTotLen(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, length));
5458     function findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {  argument
5465             y = t13 * p1y + t12 * 3 * t * c1y + t1 * 3 * t * t * c2y + t3 * p2y,
5467             my = p1y + 2 * t * (c1y - p1y) + t2 * (c2y - 2 * c1y + p1y),
5471             ay = t1 * p1y + t * c1y,
5486     function bezierBBox(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {  argument
5488             p1x = [p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y];
6147     function findDotAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {  argument
6151             y: pow(t1, 3) * p1y + pow(t1, 2) * 3 * t * c1y + t1 * 3 * t * t * c2y + pow(t, 3) * p2y