1053 function angle(x1, y1, x2, y2, x3, y3) {
1056             y = y1 - y2;
1062         return angle(x1, y1, x3, y3) - angle(x2, y2, x3, y3);
1200 Snap.len = function (x1, y1, x2, y2) {
1201     return Math.sqrt(Snap.len2(x1, y1, x2, y2));
1215 Snap.len2 = function (x1, y1, x2, y2) {
1216     return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
1864                 y1,
1873                     y1 = inver.y(0, 0);
1876                     m.translate(x2 - x1, y2 - y1);
5037     proto.line = function (x1, y1, x2, y2) {  argument
5045                 y1: y1,  property in proto.line.attr
5121                     y1 = $(this.node, "y1") || 0,
5123                 return Snap._.box(x1, y1, math.abs(x2 - x1), math.abs(y2 - y1));
5172         function gradientLinear(defs, x1, y1, x2, y2) {  argument
5180                     y1: y1,
5247         proto.gradientLinear = function (x1, y1, x2, y2) {  argument
5248             return gradientLinear(this.defs, x1, y1, x2, y2);
5525     function bezlen(x1, y1, x2, y2, x3, y3, x4, y4, z) {  argument
5538                 ybase = base3(ct, y1, y2, y3, y4),
5544     function getTotLen(x1, y1, x2, y2, x3, y3, x4, y4, ll) {  argument
5545         if (ll < 0 || bezlen(x1, y1, x2, y2, x3, y3, x4, y4) < ll) {
5553         l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
5557             l = bezlen(x1, y1, x2, y2, x3, y3, x4, y4, t2);
5561     function intersect(x1, y1, x2, y2, x3, y3, x4, y4) {  argument
5565             mmax(y1, y2) < mmin(y3, y4) ||
5566             mmin(y1, y2) > mmax(y3, y4)
5570         var nx = (x1 * y2 - y1 * x2) * (x3 - x4) - (x1 - x2) * (x3 * y4 - y3 * x4),
5571             ny = (x1 * y2 - y1 * x2) * (y3 - y4) - (y1 - y2) * (x3 * y4 - y3 * x4),
5572             denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4);
5586             py2 < +mmin(y1, y2).toFixed(2) ||
5587             py2 > +mmax(y1, y2).toFixed(2) ||
5665         var x1, y1, x2, y2, x1m, y1m, x2m, y2m, bez1, bez2,
5671                 y1 = y1m = pi[2];
5674                     bez1 = [x1, y1].concat(pi.slice(1));
5676                     y1 = bez1[7];
5678                     bez1 = [x1, y1, x1, y1, x1m, y1m, x1m, y1m];
5680                     y1 = y1m;
5788                 y1 = y + rx * Math.sin(-ry * rad),
5790                 res = [["M", x1, y1], ["A", rx, rx, 0, +(a - ry > 180), 0, x2, y2]];
6043     function l2c(x1, y1, x2, y2) {  argument
6044         return [x1, y1, x2, y2, x2, y2];
6046     function q2c(x1, y1, ax, ay, x2, y2) {  argument
6051                 _13 * y1 + _23 * ay,
6058     function a2c(x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {  argument
6071             xy = rotate(x1, y1, -rad);
6073             y1 = xy.y;
6080                 y = (y1 - y2) / 2;
6092                 cy = k * -ry * x / rx + (y1 + y2) / 2,
6093                 f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
6130             m1 = [x1, y1],
6131             m2 = [x1 + hx * s1, y1 - hy * c1],
6159     function curveDim(x0, y0, x1, y1, x2, y2, x3, y3) {  argument
6169                 b = 6 * y0 - 12 * y1 + 6 * y2;
6170                 a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3;
6171                 c = 3 * y1 - 3 * y0;
6205 …bounds[1][j] = (mt * mt * mt * y0) + (3 * mt * mt * t * y1) + (3 * mt * t * t * y2) + (t * t * t *…