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svg-morpheus.js
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svg-morpheus.js
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/*!
* SVG Morpheus v0.3.2
* https://github.com/alexk111/SVG-Morpheus
*
* Copyright (c) 2016 Alex Kaul
* License: MIT
*
* Generated at Saturday, May 14th, 2016, 5:19:19 PM
*/
(function() {
'use strict';
/*
* Easing functions
*/
var easings={};
easings['circ-in']=function (t) {
return -1 * (Math.sqrt(1 - t*t) - 1);
};
easings['circ-out']=function (t) {
return Math.sqrt(1 - (t=t-1)*t);
};
easings['circ-in-out']=function (t) {
if ((t/=1/2) < 1) return -1/2 * (Math.sqrt(1 - t*t) - 1);
return 1/2 * (Math.sqrt(1 - (t-=2)*t) + 1);
};
easings['cubic-in']=function (t) { return t*t*t };
easings['cubic-out']=function (t) { return (--t)*t*t+1 };
easings['cubic-in-out']=function (t) { return t<.5 ? 4*t*t*t : (t-1)*(2*t-2)*(2*t-2)+1 };
easings['elastic-in']=function (t) {
var s=1.70158;var p=0;var a=1;
if (t==0) return 0; if (t==1) return 1; if (!p) p=.3;
if (a < Math.abs(1)) { a=1; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (1/a);
return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t-s)*(2*Math.PI)/p ));
};
easings['elastic-out']=function (t) {
var s=1.70158;var p=0;var a=1;
if (t==0) return 0; if (t==1) return 1; if (!p) p=.3;
if (a < Math.abs(1)) { a=1; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (1/a);
return a*Math.pow(2,-10*t) * Math.sin( (t-s)*(2*Math.PI)/p ) + 1;
};
easings['elastic-in-out']=function (t) {
var s=1.70158;var p=0;var a=1;
if (t==0) return 0; if ((t/=1/2)==2) return 1; if (!p) p=1*(.3*1.5);
if (a < Math.abs(1)) { a=1; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (1/a);
if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t-s)*(2*Math.PI)/p ));
return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t-s)*(2*Math.PI)/p )*.5 + 1;
};
easings['expo-in']=function (t) {
return (t==0) ? 0 : Math.pow(2, 10 * (t - 1));
};
easings['expo-out']=function (t) {
return (t==1) ? 1 : 1-Math.pow(2, -10 * t);
};
easings['expo-in-out']=function (t) {
if (t==0) return 0;
if (t==1) return 1;
if ((t/=1/2) < 1) return 1/2 * Math.pow(2, 10 * (t - 1));
return 1/2 * (-Math.pow(2, -10 * --t) + 2);
};
easings['linear']=function (t) { return t };
easings['quad-in']=function (t) { return t*t };
easings['quad-out']=function (t) { return t*(2-t) };
easings['quad-in-out']=function (t) { return t<.5 ? 2*t*t : -1+(4-2*t)*t };
easings['quart-in']=function (t) { return t*t*t*t };
easings['quart-out']=function (t) { return 1-(--t)*t*t*t };
easings['quart-in-out']=function (t) { return t<.5 ? 8*t*t*t*t : 1-8*(--t)*t*t*t };
easings['quint-in']=function (t) { return t*t*t*t*t };
easings['quint-out']=function (t) { return 1+(--t)*t*t*t*t };
easings['quint-in-out']=function (t) { return t<.5 ? 16*t*t*t*t*t : 1+16*(--t)*t*t*t*t };
easings['sine-in']=function (t) {
return 1-Math.cos(t * (Math.PI/2));
};
easings['sine-out']=function (t) {
return Math.sin(t * (Math.PI/2));
};
easings['sine-in-out']=function (t) {
return 1/2 * (1-Math.cos(Math.PI*t));
};
/*
* Helper functions
*/
var _reqAnimFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.oRequestAnimationFrame;
var _cancelAnimFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame || window.webkitCancelAnimationFrame || window.oCancelAnimationFrame;
// Calculate style
function styleNormCalc(styleNormFrom, styleNormTo, progress) {
var i, len, styleNorm={};
for(i in styleNormFrom) {
switch (i) {
case 'fill':
case 'stroke':
styleNorm[i]=clone(styleNormFrom[i]);
styleNorm[i].r=styleNormFrom[i].r+(styleNormTo[i].r-styleNormFrom[i].r)*progress;
styleNorm[i].g=styleNormFrom[i].g+(styleNormTo[i].g-styleNormFrom[i].g)*progress;
styleNorm[i].b=styleNormFrom[i].b+(styleNormTo[i].b-styleNormFrom[i].b)*progress;
styleNorm[i].opacity=styleNormFrom[i].opacity+(styleNormTo[i].opacity-styleNormFrom[i].opacity)*progress;
break;
case 'opacity':
case 'fill-opacity':
case 'stroke-opacity':
case 'stroke-width':
styleNorm[i]=styleNormFrom[i]+(styleNormTo[i]-styleNormFrom[i])*progress;
break;
}
}
return styleNorm;
}
function styleNormToString(styleNorm) {
var i;
var style={};
for(i in styleNorm) {
switch (i) {
case 'fill':
case 'stroke':
style[i]=rgbToString(styleNorm[i]);
break;
case 'opacity':
case 'fill-opacity':
case 'stroke-opacity':
case 'stroke-width':
style[i]=styleNorm[i];
break;
}
}
return style;
}
function styleToNorm(styleFrom, styleTo) {
var styleNorm=[{},{}];
var i;
for(i in styleFrom) {
switch(i) {
case 'fill':
case 'stroke':
styleNorm[0][i]=getRGB(styleFrom[i]);
if(styleTo[i]===undefined) {
styleNorm[1][i]=getRGB(styleFrom[i]);
styleNorm[1][i].opacity=0;
}
break;
case 'opacity':
case 'fill-opacity':
case 'stroke-opacity':
case 'stroke-width':
styleNorm[0][i]=styleFrom[i];
if(styleTo[i]===undefined) {
styleNorm[1][i]=1;
}
break;
}
}
for(i in styleTo) {
switch(i) {
case 'fill':
case 'stroke':
styleNorm[1][i]=getRGB(styleTo[i]);
if(styleFrom[i]===undefined) {
styleNorm[0][i]=getRGB(styleTo[i]);
styleNorm[0][i].opacity=0;
}
break;
case 'opacity':
case 'fill-opacity':
case 'stroke-opacity':
case 'stroke-width':
styleNorm[1][i]=styleTo[i];
if(styleFrom[i]===undefined) {
styleNorm[0][i]=1;
}
break;
}
}
return styleNorm;
}
// Calculate transform progress
function transCalc(transFrom, transTo, progress) {
var res={};
for(var i in transFrom) {
switch(i) {
case 'rotate':
res[i]=[0,0,0];
for(var j=0;j<3;j++) {
res[i][j]=transFrom[i][j]+(transTo[i][j]-transFrom[i][j])*progress;
}
break;
}
}
return res;
}
function trans2string(trans) {
var res='';
if(!!trans.rotate) {
res+='rotate('+trans.rotate.join(' ')+')';
}
return res;
}
// Calculate curve progress
function curveCalc(curveFrom, curveTo, progress) {
var curve=[];
for(var i=0,len1=curveFrom.length;i<len1;i++) {
curve.push([curveFrom[i][0]]);
for(var j=1,len2=curveFrom[i].length;j<len2;j++) {
curve[i].push(curveFrom[i][j]+(curveTo[i][j]-curveFrom[i][j])*progress);
}
}
return curve;
}
function clone(obj) {
var copy;
// Handle Array
if (obj instanceof Array) {
copy = [];
for (var i = 0, len = obj.length; i < len; i++) {
copy[i] = clone(obj[i]);
}
return copy;
}
// Handle Object
if (obj instanceof Object) {
copy = {};
for (var attr in obj) {
if (obj.hasOwnProperty(attr)) {
copy[attr] = clone(obj[attr]);
}
}
return copy;
}
return obj;
}
/*
* Useful things from Adobe's Snap.svg adopted to the library needs
*/
/*
* Paths
*/
var spaces = "\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029";
var pathCommand = new RegExp("([a-z])[" + spaces + ",]*((-?\\d*\\.?\\d*(?:e[\\-+]?\\d+)?[" + spaces + "]*,?[" + spaces + "]*)+)", "ig");
var pathValues = new RegExp("(-?\\d*\\.?\\d*(?:e[\\-+]?\\d+)?)[" + spaces + "]*,?[" + spaces + "]*", "ig");
// Parses given path string into an array of arrays of path segments
var parsePathString = function (pathString) {
if (!pathString) {
return null;
}
if(typeof pathString === typeof []) {
return pathString;
} else {
var paramCounts = {a: 7, c: 6, o: 2, h: 1, l: 2, m: 2, r: 4, q: 4, s: 4, t: 2, v: 1, u: 3, z: 0},
data = [];
String(pathString).replace(pathCommand, function (a, b, c) {
var params = [],
name = b.toLowerCase();
c.replace(pathValues, function (a, b) {
b && params.push(+b);
});
if (name == "m" && params.length > 2) {
data.push([b].concat(params.splice(0, 2)));
name = "l";
b = b == "m" ? "l" : "L";
}
if (name == "o" && params.length == 1) {
data.push([b, params[0]]);
}
if (name == "r") {
data.push([b].concat(params));
} else while (params.length >= paramCounts[name]) {
data.push([b].concat(params.splice(0, paramCounts[name])));
if (!paramCounts[name]) {
break;
}
}
});
return data;
}
};
// http://schepers.cc/getting-to-the-point
var catmullRom2bezier=function(crp, z) {
var d = [];
for (var i = 0, iLen = crp.length; iLen - 2 * !z > i; i += 2) {
var p = [
{x: +crp[i - 2], y: +crp[i - 1]},
{x: +crp[i], y: +crp[i + 1]},
{x: +crp[i + 2], y: +crp[i + 3]},
{x: +crp[i + 4], y: +crp[i + 5]}
];
if (z) {
if (!i) {
p[0] = {x: +crp[iLen - 2], y: +crp[iLen - 1]};
} else if (iLen - 4 == i) {
p[3] = {x: +crp[0], y: +crp[1]};
} else if (iLen - 2 == i) {
p[2] = {x: +crp[0], y: +crp[1]};
p[3] = {x: +crp[2], y: +crp[3]};
}
} else {
if (iLen - 4 == i) {
p[3] = p[2];
} else if (!i) {
p[0] = {x: +crp[i], y: +crp[i + 1]};
}
}
d.push(["C",
(-p[0].x + 6 * p[1].x + p[2].x) / 6,
(-p[0].y + 6 * p[1].y + p[2].y) / 6,
(p[1].x + 6 * p[2].x - p[3].x) / 6,
(p[1].y + 6*p[2].y - p[3].y) / 6,
p[2].x,
p[2].y
]);
}
return d;
};
var ellipsePath=function(x, y, rx, ry, a) {
if (a == null && ry == null) {
ry = rx;
}
x = +x;
y = +y;
rx = +rx;
ry = +ry;
if (a != null) {
var rad = Math.PI / 180,
x1 = x + rx * Math.cos(-ry * rad),
x2 = x + rx * Math.cos(-a * rad),
y1 = y + rx * Math.sin(-ry * rad),
y2 = y + rx * Math.sin(-a * rad),
res = [["M", x1, y1], ["A", rx, rx, 0, +(a - ry > 180), 0, x2, y2]];
} else {
res = [
["M", x, y],
["m", 0, -ry],
["a", rx, ry, 0, 1, 1, 0, 2 * ry],
["a", rx, ry, 0, 1, 1, 0, -2 * ry],
["z"]
];
}
return res;
};
var pathToAbsolute=function(pathArray) {
pathArray = parsePathString(pathArray);
if (!pathArray || !pathArray.length) {
return [["M", 0, 0]];
}
var res = [],
x = 0,
y = 0,
mx = 0,
my = 0,
start = 0,
pa0;
if (pathArray[0][0] == "M") {
x = +pathArray[0][1];
y = +pathArray[0][2];
mx = x;
my = y;
start++;
res[0] = ["M", x, y];
}
var crz = pathArray.length == 3 &&
pathArray[0][0] == "M" &&
pathArray[1][0].toUpperCase() == "R" &&
pathArray[2][0].toUpperCase() == "Z";
for (var r, pa, i = start, ii = pathArray.length; i < ii; i++) {
res.push(r = []);
pa = pathArray[i];
pa0 = pa[0];
if (pa0 != pa0.toUpperCase()) {
r[0] = pa0.toUpperCase();
switch (r[0]) {
case "A":
r[1] = pa[1];
r[2] = pa[2];
r[3] = pa[3];
r[4] = pa[4];
r[5] = pa[5];
r[6] = +pa[6] + x;
r[7] = +pa[7] + y;
break;
case "V":
r[1] = +pa[1] + y;
break;
case "H":
r[1] = +pa[1] + x;
break;
case "R":
var dots = [x, y].concat(pa.slice(1));
for (var j = 2, jj = dots.length; j < jj; j++) {
dots[j] = +dots[j] + x;
dots[++j] = +dots[j] + y;
}
res.pop();
res = res.concat(catmullRom2bezier(dots, crz));
break;
case "O":
res.pop();
dots = ellipsePath(x, y, pa[1], pa[2]);
dots.push(dots[0]);
res = res.concat(dots);
break;
case "U":
res.pop();
res = res.concat(ellipsePath(x, y, pa[1], pa[2], pa[3]));
r = ["U"].concat(res[res.length - 1].slice(-2));
break;
case "M":
mx = +pa[1] + x;
my = +pa[2] + y;
default:
for (j = 1, jj = pa.length; j < jj; j++) {
r[j] = +pa[j] + ((j % 2) ? x : y);
}
}
} else if (pa0 == "R") {
dots = [x, y].concat(pa.slice(1));
res.pop();
res = res.concat(catmullRom2bezier(dots, crz));
r = ["R"].concat(pa.slice(-2));
} else if (pa0 == "O") {
res.pop();
dots = ellipsePath(x, y, pa[1], pa[2]);
dots.push(dots[0]);
res = res.concat(dots);
} else if (pa0 == "U") {
res.pop();
res = res.concat(ellipsePath(x, y, pa[1], pa[2], pa[3]));
r = ["U"].concat(res[res.length - 1].slice(-2));
} else {
for (var k = 0, kk = pa.length; k < kk; k++) {
r[k] = pa[k];
}
}
pa0 = pa0.toUpperCase();
if (pa0 != "O") {
switch (r[0]) {
case "Z":
x = +mx;
y = +my;
break;
case "H":
x = r[1];
break;
case "V":
y = r[1];
break;
case "M":
mx = r[r.length - 2];
my = r[r.length - 1];
default:
x = r[r.length - 2];
y = r[r.length - 1];
}
}
}
return res;
};
var l2c = function(x1, y1, x2, y2) {
return [x1, y1, x2, y2, x2, y2];
};
var q2c = function(x1, y1, ax, ay, x2, y2) {
var _13 = 1 / 3,
_23 = 2 / 3;
return [
_13 * x1 + _23 * ax,
_13 * y1 + _23 * ay,
_13 * x2 + _23 * ax,
_13 * y2 + _23 * ay,
x2,
y2
];
};
var a2c = function(x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
// for more information of where this math came from visit:
// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
var _120 = Math.PI * 120 / 180,
rad = Math.PI / 180 * (+angle || 0),
res = [],
xy,
rotate = function (x, y, rad) {
var X = x * Math.cos(rad) - y * Math.sin(rad),
Y = x * Math.sin(rad) + y * Math.cos(rad);
return {x: X, y: Y};
};
if (!recursive) {
xy = rotate(x1, y1, -rad);
x1 = xy.x;
y1 = xy.y;
xy = rotate(x2, y2, -rad);
x2 = xy.x;
y2 = xy.y;
var cos = Math.cos(Math.PI / 180 * angle),
sin = Math.sin(Math.PI / 180 * angle),
x = (x1 - x2) / 2,
y = (y1 - y2) / 2;
var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
if (h > 1) {
h = Math.sqrt(h);
rx = h * rx;
ry = h * ry;
}
var rx2 = rx * rx,
ry2 = ry * ry,
k = (large_arc_flag == sweep_flag ? -1 : 1) *
Math.sqrt(Math.abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x))),
cx = k * rx * y / ry + (x1 + x2) / 2,
cy = k * -ry * x / rx + (y1 + y2) / 2,
f1 = Math.asin(((y1 - cy) / ry).toFixed(9)),
f2 = Math.asin(((y2 - cy) / ry).toFixed(9));
f1 = x1 < cx ? Math.PI - f1 : f1;
f2 = x2 < cx ? Math.PI - f2 : f2;
f1 < 0 && (f1 = Math.PI * 2 + f1);
f2 < 0 && (f2 = Math.PI * 2 + f2);
if (sweep_flag && f1 > f2) {
f1 = f1 - Math.PI * 2;
}
if (!sweep_flag && f2 > f1) {
f2 = f2 - Math.PI * 2;
}
} else {
f1 = recursive[0];
f2 = recursive[1];
cx = recursive[2];
cy = recursive[3];
}
var df = f2 - f1;
if (Math.abs(df) > _120) {
var f2old = f2,
x2old = x2,
y2old = y2;
f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
x2 = cx + rx * Math.cos(f2);
y2 = cy + ry * Math.sin(f2);
res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
}
df = f2 - f1;
var c1 = Math.cos(f1),
s1 = Math.sin(f1),
c2 = Math.cos(f2),
s2 = Math.sin(f2),
t = Math.tan(df / 4),
hx = 4 / 3 * rx * t,
hy = 4 / 3 * ry * t,
m1 = [x1, y1],
m2 = [x1 + hx * s1, y1 - hy * c1],
m3 = [x2 + hx * s2, y2 - hy * c2],
m4 = [x2, y2];
m2[0] = 2 * m1[0] - m2[0];
m2[1] = 2 * m1[1] - m2[1];
if (recursive) {
return [m2, m3, m4].concat(res);
} else {
res = [m2, m3, m4].concat(res).join().split(",");
var newres = [];
for (var i = 0, ii = res.length; i < ii; i++) {
newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
}
return newres;
}
};
var path2curve=function(path, path2) {
var p = pathToAbsolute(path),
p2 = path2 && pathToAbsolute(path2),
attrs = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
attrs2 = {x: 0, y: 0, bx: 0, by: 0, X: 0, Y: 0, qx: null, qy: null},
processPath = function (path, d, pcom) {
var nx, ny;
if (!path) {
return ["C", d.x, d.y, d.x, d.y, d.x, d.y];
}
!(path[0] in {T: 1, Q: 1}) && (d.qx = d.qy = null);
switch (path[0]) {
case "M":
d.X = path[1];
d.Y = path[2];
break;
case "A":
path = ["C"].concat(a2c.apply(0, [d.x, d.y].concat(path.slice(1))));
break;
case "S":
if (pcom == "C" || pcom == "S") { // In "S" case we have to take into account, if the previous command is C/S.
nx = d.x * 2 - d.bx; // And reflect the previous
ny = d.y * 2 - d.by; // command's control point relative to the current point.
}
else { // or some else or nothing
nx = d.x;
ny = d.y;
}
path = ["C", nx, ny].concat(path.slice(1));
break;
case "T":
if (pcom == "Q" || pcom == "T") { // In "T" case we have to take into account, if the previous command is Q/T.
d.qx = d.x * 2 - d.qx; // And make a reflection similar
d.qy = d.y * 2 - d.qy; // to case "S".
}
else { // or something else or nothing
d.qx = d.x;
d.qy = d.y;
}
path = ["C"].concat(q2c(d.x, d.y, d.qx, d.qy, path[1], path[2]));
break;
case "Q":
d.qx = path[1];
d.qy = path[2];
path = ["C"].concat(q2c(d.x, d.y, path[1], path[2], path[3], path[4]));
break;
case "L":
path = ["C"].concat(l2c(d.x, d.y, path[1], path[2]));
break;
case "H":
path = ["C"].concat(l2c(d.x, d.y, path[1], d.y));
break;
case "V":
path = ["C"].concat(l2c(d.x, d.y, d.x, path[1]));
break;
case "Z":
path = ["C"].concat(l2c(d.x, d.y, d.X, d.Y));
break;
}
return path;
},
fixArc = function (pp, i) {
if (pp[i].length > 7) {
pp[i].shift();
var pi = pp[i];
while (pi.length) {
pcoms1[i] = "A"; // if created multiple C:s, their original seg is saved
p2 && (pcoms2[i] = "A"); // the same as above
pp.splice(i++, 0, ["C"].concat(pi.splice(0, 6)));
}
pp.splice(i, 1);
ii = Math.max(p.length, p2 && p2.length || 0);
}
},
fixM = function (path1, path2, a1, a2, i) {
if (path1 && path2 && path1[i][0] == "M" && path2[i][0] != "M") {
path2.splice(i, 0, ["M", a2.x, a2.y]);
a1.bx = 0;
a1.by = 0;
a1.x = path1[i][1];
a1.y = path1[i][2];
ii = Math.max(p.length, p2 && p2.length || 0);
}
},
pcoms1 = [], // path commands of original path p
pcoms2 = [], // path commands of original path p2
pfirst = "", // temporary holder for original path command
pcom = ""; // holder for previous path command of original path
for (var i = 0, ii = Math.max(p.length, p2 && p2.length || 0); i < ii; i++) {
p[i] && (pfirst = p[i][0]); // save current path command
if (pfirst != "C") { // C is not saved yet, because it may be result of conversion
pcoms1[i] = pfirst; // Save current path command
i && ( pcom = pcoms1[i - 1]); // Get previous path command pcom
}
p[i] = processPath(p[i], attrs, pcom); // Previous path command is inputted to processPath
if (pcoms1[i] != "A" && pfirst == "C") pcoms1[i] = "C"; // A is the only command
// which may produce multiple C:s
// so we have to make sure that C is also C in original path
fixArc(p, i); // fixArc adds also the right amount of A:s to pcoms1
if (p2) { // the same procedures is done to p2
p2[i] && (pfirst = p2[i][0]);
if (pfirst != "C") {
pcoms2[i] = pfirst;
i && (pcom = pcoms2[i - 1]);
}
p2[i] = processPath(p2[i], attrs2, pcom);
if (pcoms2[i] != "A" && pfirst == "C") {
pcoms2[i] = "C";
}
fixArc(p2, i);
}
fixM(p, p2, attrs, attrs2, i);
fixM(p2, p, attrs2, attrs, i);
var seg = p[i],
seg2 = p2 && p2[i],
seglen = seg.length,
seg2len = p2 && seg2.length;
attrs.x = seg[seglen - 2];
attrs.y = seg[seglen - 1];
attrs.bx = parseFloat(seg[seglen - 4]) || attrs.x;
attrs.by = parseFloat(seg[seglen - 3]) || attrs.y;
attrs2.bx = p2 && (parseFloat(seg2[seg2len - 4]) || attrs2.x);
attrs2.by = p2 && (parseFloat(seg2[seg2len - 3]) || attrs2.y);
attrs2.x = p2 && seg2[seg2len - 2];
attrs2.y = p2 && seg2[seg2len - 1];
}
return p2 ? [p, p2] : p;
};
var box=function(x, y, width, height) {
if (x == null) {
x = y = width = height = 0;
}
if (y == null) {
y = x.y;
width = x.width;
height = x.height;
x = x.x;
}
return {
x: x,
y: y,
w: width,
h: height,
cx: x + width / 2,
cy: y + height / 2
};
};
// Returns bounding box of cubic bezier curve.
// Source: http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
// Original version: NISHIO Hirokazu
// Modifications: https://github.com/timo22345
var curveDim=function(x0, y0, x1, y1, x2, y2, x3, y3) {
var tvalues = [],
bounds = [[], []],
a, b, c, t, t1, t2, b2ac, sqrtb2ac;
for (var i = 0; i < 2; ++i) {
if (i == 0) {
b = 6 * x0 - 12 * x1 + 6 * x2;
a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3;
c = 3 * x1 - 3 * x0;
} else {
b = 6 * y0 - 12 * y1 + 6 * y2;
a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3;
c = 3 * y1 - 3 * y0;
}
if (Math.abs(a) < 1e-12) {
if (Math.abs(b) < 1e-12) {
continue;
}
t = -c / b;
if (0 < t && t < 1) {
tvalues.push(t);
}
continue;
}
b2ac = b * b - 4 * c * a;
sqrtb2ac = Math.sqrt(b2ac);
if (b2ac < 0) {
continue;
}
t1 = (-b + sqrtb2ac) / (2 * a);
if (0 < t1 && t1 < 1) {
tvalues.push(t1);
}
t2 = (-b - sqrtb2ac) / (2 * a);
if (0 < t2 && t2 < 1) {
tvalues.push(t2);
}
}
var x, y, j = tvalues.length,
jlen = j,
mt;
while (j--) {
t = tvalues[j];
mt = 1 - t;
bounds[0][j] = (mt * mt * mt * x0) + (3 * mt * mt * t * x1) + (3 * mt * t * t * x2) + (t * t * t * x3);
bounds[1][j] = (mt * mt * mt * y0) + (3 * mt * mt * t * y1) + (3 * mt * t * t * y2) + (t * t * t * y3);
}
bounds[0][jlen] = x0;
bounds[1][jlen] = y0;
bounds[0][jlen + 1] = x3;
bounds[1][jlen + 1] = y3;
bounds[0].length = bounds[1].length = jlen + 2;
return {
min: {x: Math.min.apply(0, bounds[0]), y: Math.min.apply(0, bounds[1])},
max: {x: Math.max.apply(0, bounds[0]), y: Math.max.apply(0, bounds[1])}
};
};
var curvePathBBox=function(path) {
var x = 0,
y = 0,
X = [],
Y = [],
p;
for (var i = 0, ii = path.length; i < ii; i++) {
p = path[i];
if (p[0] == "M") {
x = p[1];
y = p[2];
X.push(x);
Y.push(y);
} else {
var dim = curveDim(x, y, p[1], p[2], p[3], p[4], p[5], p[6]);
X = X.concat(dim.min.x, dim.max.x);
Y = Y.concat(dim.min.y, dim.max.y);
x = p[5];
y = p[6];
}
}
var xmin = Math.min.apply(0, X),
ymin = Math.min.apply(0, Y),
xmax = Math.max.apply(0, X),
ymax = Math.max.apply(0, Y),
bb = box(xmin, ymin, xmax - xmin, ymax - ymin);
return bb;
};
var p2s=/,?([a-z]),?/gi;
var path2string=function(path) {
return path.join(',').replace(p2s, "$1");
};
/*
* Styles
*/
var hsrg = {hs: 1, rg: 1},
has = "hasOwnProperty",
colourRegExp = /^\s*((#[a-f\d]{6})|(#[a-f\d]{3})|rgba?\(\s*([\d\.]+%?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+%?(?:\s*,\s*[\d\.]+%?)?)\s*\)|hsba?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?%?)\s*\)|hsla?\(\s*([\d\.]+(?:deg|\xb0|%)?\s*,\s*[\d\.]+%?\s*,\s*[\d\.]+(?:%?\s*,\s*[\d\.]+)?%?)\s*\))\s*$/i,
commaSpaces = new RegExp("[" + spaces + "]*,[" + spaces + "]*");
// Converts RGB values to a hex representation of the color
// var rgb = function (r, g, b, o) {
// if (isFinite(o)) {
// var round = math.round;
// return "rgba(" + [round(r), round(g), round(b), +o.toFixed(2)] + ")";
// }
// return "#" + (16777216 | b | (g << 8) | (r << 16)).toString(16).slice(1);
// };
var rgbToString = function (rgb) {
var round = Math.round;
return "rgba(" + [round(rgb.r), round(rgb.g), round(rgb.b), +rgb.opacity.toFixed(2)] + ")";
};
var toHex = function (color) {
var i = window.document.getElementsByTagName("head")[0] || window.document.getElementsByTagName("svg")[0],
red = "rgb(255, 0, 0)";
toHex = function (color) {
if (color.toLowerCase() == "red") {
return red;
}
i.style.color = red;
i.style.color = color;
var out = window.document.defaultView.getComputedStyle(i, "").getPropertyValue("color");
return out == red ? null : out;
};
return toHex(color);
};
var packageRGB = function (r, g, b, o) {
r = Math.round(r * 255);
g = Math.round(g * 255);
b = Math.round(b * 255);
var rgb = {
r: r,
g: g,
b: b,
opacity: isFinite(o) ? o : 1
};
return rgb;
};
// Converts HSB values to an RGB object
var hsb2rgb = function (h, s, v, o) {
if (typeof h === typeof {} && "h" in h && "s" in h && "b" in h) {
v = h.b;
s = h.s;
h = h.h;
o = h.o;
}
h *= 360;
var R, G, B, X, C;
h = (h % 360) / 60;
C = v * s;
X = C * (1 - Math.abs(h % 2 - 1));
R = G = B = v - C;
h = ~~h;
R += [C, X, 0, 0, X, C][h];
G += [X, C, C, X, 0, 0][h];
B += [0, 0, X, C, C, X][h];
return packageRGB(R, G, B, o);
};
// Converts HSL values to an RGB object
var hsl2rgb = function (h, s, l, o) {
if (typeof h === typeof {} && "h" in h && "s" in h && "l" in h) {
l = h.l;
s = h.s;
h = h.h;
}
if (h > 1 || s > 1 || l > 1) {
h /= 360;
s /= 100;
l /= 100;
}
h *= 360;
var R, G, B, X, C;
h = (h % 360) / 60;
C = 2 * s * (l < .5 ? l : 1 - l);
X = C * (1 - Math.abs(h % 2 - 1));
R = G = B = l - C / 2;
h = ~~h;
R += [C, X, 0, 0, X, C][h];
G += [X, C, C, X, 0, 0][h];
B += [0, 0, X, C, C, X][h];
return packageRGB(R, G, B, o);
};
// Parses color string as RGB object
var getRGB = function (colour) {
if (!colour || !!((colour = String(colour)).indexOf("-") + 1)) {
return {r: -1, g: -1, b: -1, opacity: -1, error: 1};
}
if (colour == "none") {
return {r: -1, g: -1, b: -1, opacity: -1};
}
!(hsrg[has](colour.toLowerCase().substring(0, 2)) || colour.charAt() == "#") && (colour = toHex(colour));
if (!colour) {
return {r: -1, g: -1, b: -1, opacity: -1, error: 1};
}
var res,
red,
green,
blue,
opacity,
t,
values,
rgb = colour.match(colourRegExp);
if (rgb) {
if (rgb[2]) {
blue = parseInt(rgb[2].substring(5), 16);
green = parseInt(rgb[2].substring(3, 5), 16);
red = parseInt(rgb[2].substring(1, 3), 16);
}
if (rgb[3]) {
blue = parseInt((t = rgb[3].charAt(3)) + t, 16);
green = parseInt((t = rgb[3].charAt(2)) + t, 16);
red = parseInt((t = rgb[3].charAt(1)) + t, 16);
}
if (rgb[4]) {
values = rgb[4].split(commaSpaces);
red = parseFloat(values[0]);
values[0].slice(-1) == "%" && (red *= 2.55);
green = parseFloat(values[1]);
values[1].slice(-1) == "%" && (green *= 2.55);
blue = parseFloat(values[2]);
values[2].slice(-1) == "%" && (blue *= 2.55);
rgb[1].toLowerCase().slice(0, 4) == "rgba" && (opacity = parseFloat(values[3]));
values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
}
if (rgb[5]) {
values = rgb[5].split(commaSpaces);
red = parseFloat(values[0]);
values[0].slice(-1) == "%" && (red /= 100);
green = parseFloat(values[1]);
values[1].slice(-1) == "%" && (green /= 100);
blue = parseFloat(values[2]);
values[2].slice(-1) == "%" && (blue /= 100);
(values[0].slice(-3) == "deg" || values[0].slice(-1) == "\xb0") && (red /= 360);
rgb[1].toLowerCase().slice(0, 4) == "hsba" && (opacity = parseFloat(values[3]));
values[3] && values[3].slice(-1) == "%" && (opacity /= 100);
return hsb2rgb(red, green, blue, opacity);
}