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")}w.each(i,function(){var e=w(this).val(),t=w(this).closest(".ff-el-group.has-conditions").hasClass("ff_excluded");e&&!t&&o.push(e)});var s,f="";f=o.length?o.join(r):w(t).data("fallback"),w(this).html(null==(s=f)?"":("string"!=typeof s&&(s=String(s)),(s=(s=s.replace(/[^]*?<\/script>/gi,"").replace(/[^]*?<\/iframe>/gi,"").replace(/<.*?\bon\w+=["'][^"']*["']/gi,"").replace(/javascript:/gi,"")).replace(//g,">")).replace(/<br\s*\/?>/gi,"
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")))}else a.trigger("calculate_payment_summary",{element:w(t)})})}}),(x=String.prototype).startsWith||(x.startsWith=function(e,t){return t=!t||t<0?0:+t,this.substring(t,t+e.length)===e}),x.endsWith||(x.endsWith=function(e,t){return(void 0===t||t>this.length)&&(t=this.length),this.substring(t-e.length,t)===e}),x.includes||(x.includes=function(e,t){if(e instanceof RegExp)throw TypeError("first argument must not be a RegExp");return void 0===t&&(t=0),-1!==this.indexOf(e,t)})})(); (function (global, factory){ typeof exports==='object'&&typeof module!=='undefined' ? module.exports=factory() : typeof define==='function'&&define.amd ? define(factory) : (global.SignaturePad=factory()); }(this, (function (){ 'use strict'; function Point(x, y, time){ this.x=x; this.y=y; this.time=time||new Date().getTime(); } Point.prototype.velocityFrom=function (start){ return this.time!==start.time ? this.distanceTo(start) / (this.time - start.time):1; }; Point.prototype.distanceTo=function (start){ return Math.sqrt(Math.pow(this.x - start.x, 2) + Math.pow(this.y - start.y, 2)); }; Point.prototype.equals=function (other){ return this.x===other.x&&this.y===other.y&&this.time===other.time; }; function Bezier(startPoint, control1, control2, endPoint){ this.startPoint=startPoint; this.control1=control1; this.control2=control2; this.endPoint=endPoint; } Bezier.prototype.length=function (){ var steps=10; var length=0; var px=void 0; var py=void 0; for (var i=0; i <=steps; i +=1){ var t=i / steps; var cx=this._point(t, this.startPoint.x, this.control1.x, this.control2.x, this.endPoint.x); var cy=this._point(t, this.startPoint.y, this.control1.y, this.control2.y, this.endPoint.y); if(i > 0){ var xdiff=cx - px; var ydiff=cy - py; length +=Math.sqrt(xdiff * xdiff + ydiff * ydiff); } px=cx; py=cy; } return length; }; Bezier.prototype._point=function (t, start, c1, c2, end){ return start * (1.0 - t) * (1.0 - t) * (1.0 - t) + 3.0 * c1 * (1.0 - t) * (1.0 - t) * t + 3.0 * c2 * (1.0 - t) * t * t + end * t * t * t; }; function throttle(func, wait, options){ var context, args, result; var timeout=null; var previous=0; if(!options) options={}; var later=function later(){ previous=options.leading===false ? 0:Date.now(); timeout=null; result=func.apply(context, args); if(!timeout) context=args=null; }; return function (){ var now=Date.now(); if(!previous&&options.leading===false) previous=now; var remaining=wait - (now - previous); context=this; args=arguments; if(remaining <=0||remaining > wait){ if(timeout){ clearTimeout(timeout); timeout=null; } previous=now; result=func.apply(context, args); if(!timeout) context=args=null; }else if(!timeout&&options.trailing!==false){ timeout=setTimeout(later, remaining); } return result; };} function SignaturePad(canvas, options){ var self=this; var opts=options||{}; this.velocityFilterWeight=opts.velocityFilterWeight||0.7; this.minWidth=opts.minWidth||0.5; this.maxWidth=opts.maxWidth||2.5; this.throttle='throttle' in opts ? opts.throttle:16; this.minDistance='minDistance' in opts ? opts.minDistance:5; if(this.throttle){ this._strokeMoveUpdate=throttle(SignaturePad.prototype._strokeUpdate, this.throttle); }else{ this._strokeMoveUpdate=SignaturePad.prototype._strokeUpdate; } this.dotSize=opts.dotSize||function (){ return (this.minWidth + this.maxWidth) / 2; }; this.penColor=opts.penColor||'black'; this.backgroundColor=opts.backgroundColor||'rgba(0,0,0,0)'; this.onBegin=opts.onBegin; this.onEnd=opts.onEnd; this._canvas=canvas; this._ctx=canvas.getContext('2d'); this.clear(); this._handleMouseDown=function (event){ if(event.which===1){ self._mouseButtonDown=true; self._strokeBegin(event); }}; this._handleMouseMove=function (event){ if(self._mouseButtonDown){ self._strokeMoveUpdate(event); }}; this._handleMouseUp=function (event){ if(event.which===1&&self._mouseButtonDown){ self._mouseButtonDown=false; self._strokeEnd(event); }}; this._handleTouchStart=function (event){ if(event.targetTouches.length===1){ var touch=event.changedTouches[0]; self._strokeBegin(touch); }}; this._handleTouchMove=function (event){ event.preventDefault(); var touch=event.targetTouches[0]; self._strokeMoveUpdate(touch); }; this._handleTouchEnd=function (event){ var wasCanvasTouched=event.target===self._canvas; if(wasCanvasTouched){ event.preventDefault(); self._strokeEnd(event); }}; this.on(); } SignaturePad.prototype.clear=function (){ var ctx=this._ctx; var canvas=this._canvas; ctx.fillStyle=this.backgroundColor; ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.fillRect(0, 0, canvas.width, canvas.height); this._data=[]; this._reset(); this._isEmpty=true; }; SignaturePad.prototype.fromDataURL=function (dataUrl){ var _this=this; var options=arguments.length > 1&&arguments[1]!==undefined ? arguments[1]:{}; var image=new Image(); var ratio=options.ratio||window.devicePixelRatio||1; var width=options.width||this._canvas.width / ratio; var height=options.height||this._canvas.height / ratio; this._reset(); image.src=dataUrl; image.onload=function (){ _this._ctx.drawImage(image, 0, 0, width, height); }; this._isEmpty=false; }; SignaturePad.prototype.toDataURL=function (type){ var _canvas; switch (type){ case 'image/svg+xml': return this._toSVG(); default: for (var _len=arguments.length, options=Array(_len > 1 ? _len - 1:0), _key=1; _key < _len; _key++){ options[_key - 1]=arguments[_key]; } return (_canvas=this._canvas).toDataURL.apply(_canvas, [type].concat(options)); }}; SignaturePad.prototype.on=function (){ this._handleMouseEvents(); this._handleTouchEvents(); }; SignaturePad.prototype.off=function (){ this._canvas.removeEventListener('mousedown', this._handleMouseDown); this._canvas.removeEventListener('mousemove', this._handleMouseMove); document.removeEventListener('mouseup', this._handleMouseUp); this._canvas.removeEventListener('touchstart', this._handleTouchStart); this._canvas.removeEventListener('touchmove', this._handleTouchMove); this._canvas.removeEventListener('touchend', this._handleTouchEnd); }; SignaturePad.prototype.isEmpty=function (){ return this._isEmpty; }; SignaturePad.prototype._strokeBegin=function (event){ this._data.push([]); this._reset(); this._strokeUpdate(event); if(typeof this.onBegin==='function'){ this.onBegin(event); }}; SignaturePad.prototype._strokeUpdate=function (event){ var x=event.clientX; var y=event.clientY; var point=this._createPoint(x, y); var lastPointGroup=this._data[this._data.length - 1]; var lastPoint=lastPointGroup&&lastPointGroup[lastPointGroup.length - 1]; var isLastPointTooClose=lastPoint&&point.distanceTo(lastPoint) < this.minDistance; if(!(lastPoint&&isLastPointTooClose)){ var _addPoint=this._addPoint(point), curve=_addPoint.curve, widths=_addPoint.widths; if(curve&&widths){ this._drawCurve(curve, widths.start, widths.end); } this._data[this._data.length - 1].push({ x: point.x, y: point.y, time: point.time, color: this.penColor }); }}; SignaturePad.prototype._strokeEnd=function (event){ var canDrawCurve=this.points.length > 2; var point=this.points[0]; if(!canDrawCurve&&point){ this._drawDot(point); } if(point){ var lastPointGroup=this._data[this._data.length - 1]; var lastPoint=lastPointGroup[lastPointGroup.length - 1]; if(!point.equals(lastPoint)){ lastPointGroup.push({ x: point.x, y: point.y, time: point.time, color: this.penColor }); }} if(typeof this.onEnd==='function'){ this.onEnd(event); }}; SignaturePad.prototype._handleMouseEvents=function (){ this._mouseButtonDown=false; this._canvas.addEventListener('mousedown', this._handleMouseDown); this._canvas.addEventListener('mousemove', this._handleMouseMove); document.addEventListener('mouseup', this._handleMouseUp); }; SignaturePad.prototype._handleTouchEvents=function (){ this._canvas.style.msTouchAction='none'; this._canvas.style.touchAction='none'; this._canvas.addEventListener('touchstart', this._handleTouchStart); this._canvas.addEventListener('touchmove', this._handleTouchMove); this._canvas.addEventListener('touchend', this._handleTouchEnd); }; SignaturePad.prototype._reset=function (){ this.points=[]; this._lastVelocity=0; this._lastWidth=(this.minWidth + this.maxWidth) / 2; this._ctx.fillStyle=this.penColor; }; SignaturePad.prototype._createPoint=function (x, y, time){ var rect=this._canvas.getBoundingClientRect(); return new Point(x - rect.left, y - rect.top, time||new Date().getTime()); }; SignaturePad.prototype._addPoint=function (point){ var points=this.points; var tmp=void 0; points.push(point); if(points.length > 2){ if(points.length===3) points.unshift(points[0]); tmp=this._calculateCurveControlPoints(points[0], points[1], points[2]); var c2=tmp.c2; tmp=this._calculateCurveControlPoints(points[1], points[2], points[3]); var c3=tmp.c1; var curve=new Bezier(points[1], c2, c3, points[2]); var widths=this._calculateCurveWidths(curve); points.shift(); return { curve: curve, widths: widths };} return {};}; SignaturePad.prototype._calculateCurveControlPoints=function (s1, s2, s3){ var dx1=s1.x - s2.x; var dy1=s1.y - s2.y; var dx2=s2.x - s3.x; var dy2=s2.y - s3.y; var m1={ x: (s1.x + s2.x) / 2.0, y: (s1.y + s2.y) / 2.0 }; var m2={ x: (s2.x + s3.x) / 2.0, y: (s2.y + s3.y) / 2.0 }; var l1=Math.sqrt(dx1 * dx1 + dy1 * dy1); var l2=Math.sqrt(dx2 * dx2 + dy2 * dy2); var dxm=m1.x - m2.x; var dym=m1.y - m2.y; var k=l2 / (l1 + l2); var cm={ x: m2.x + dxm * k, y: m2.y + dym * k }; var tx=s2.x - cm.x; var ty=s2.y - cm.y; return { c1: new Point(m1.x + tx, m1.y + ty), c2: new Point(m2.x + tx, m2.y + ty) };}; SignaturePad.prototype._calculateCurveWidths=function (curve){ var startPoint=curve.startPoint; var endPoint=curve.endPoint; var widths={ start: null, end: null }; var velocity=this.velocityFilterWeight * endPoint.velocityFrom(startPoint) + (1 - this.velocityFilterWeight) * this._lastVelocity; var newWidth=this._strokeWidth(velocity); widths.start=this._lastWidth; widths.end=newWidth; this._lastVelocity=velocity; this._lastWidth=newWidth; return widths; }; SignaturePad.prototype._strokeWidth=function (velocity){ return Math.max(this.maxWidth / (velocity + 1), this.minWidth); }; SignaturePad.prototype._drawPoint=function (x, y, size){ var ctx=this._ctx; ctx.moveTo(x, y); ctx.arc(x, y, size, 0, 2 * Math.PI, false); this._isEmpty=false; }; SignaturePad.prototype._drawCurve=function (curve, startWidth, endWidth){ var ctx=this._ctx; var widthDelta=endWidth - startWidth; var drawSteps=Math.floor(curve.length()); ctx.beginPath(); for (var i=0; i < drawSteps; i +=1){ var t=i / drawSteps; var tt=t * t; var ttt=tt * t; var u=1 - t; var uu=u * u; var uuu=uu * u; var x=uuu * curve.startPoint.x; x +=3 * uu * t * curve.control1.x; x +=3 * u * tt * curve.control2.x; x +=ttt * curve.endPoint.x; var y=uuu * curve.startPoint.y; y +=3 * uu * t * curve.control1.y; y +=3 * u * tt * curve.control2.y; y +=ttt * curve.endPoint.y; var width=startWidth + ttt * widthDelta; this._drawPoint(x, y, width); } ctx.closePath(); ctx.fill(); }; SignaturePad.prototype._drawDot=function (point){ var ctx=this._ctx; var width=typeof this.dotSize==='function' ? this.dotSize():this.dotSize; ctx.beginPath(); this._drawPoint(point.x, point.y, width); ctx.closePath(); ctx.fill(); }; SignaturePad.prototype._fromData=function (pointGroups, drawCurve, drawDot){ for (var i=0; i < pointGroups.length; i +=1){ var group=pointGroups[i]; if(group.length > 1){ for (var j=0; j < group.length; j +=1){ var rawPoint=group[j]; var point=new Point(rawPoint.x, rawPoint.y, rawPoint.time); var color=rawPoint.color; if(j===0){ this.penColor=color; this._reset(); this._addPoint(point); }else if(j!==group.length - 1){ var _addPoint2=this._addPoint(point), curve=_addPoint2.curve, widths=_addPoint2.widths; if(curve&&widths){ drawCurve(curve, widths, color); }}else{ }} }else{ this._reset(); var _rawPoint=group[0]; drawDot(_rawPoint); }} }; SignaturePad.prototype._toSVG=function (){ var _this2=this; var pointGroups=this._data; var canvas=this._canvas; var ratio=Math.max(window.devicePixelRatio||1, 1); var minX=0; var minY=0; var maxX=canvas.width / ratio; var maxY=canvas.height / ratio; var svg=document.createElementNS('http://www.w3.org/2000/svg', 'svg'); svg.setAttributeNS(null, 'width', canvas.width); svg.setAttributeNS(null, 'height', canvas.height); this._fromData(pointGroups, function (curve, widths, color){ var path=document.createElement('path'); if(!isNaN(curve.control1.x)&&!isNaN(curve.control1.y)&&!isNaN(curve.control2.x)&&!isNaN(curve.control2.y)){ var attr='M ' + curve.startPoint.x.toFixed(3) + ',' + curve.startPoint.y.toFixed(3) + ' ' + ('C ' + curve.control1.x.toFixed(3) + ',' + curve.control1.y.toFixed(3) + ' ') + (curve.control2.x.toFixed(3) + ',' + curve.control2.y.toFixed(3) + ' ') + (curve.endPoint.x.toFixed(3) + ',' + curve.endPoint.y.toFixed(3)); path.setAttribute('d', attr); path.setAttribute('stroke-width', (widths.end * 2.25).toFixed(3)); path.setAttribute('stroke', color); path.setAttribute('fill', 'none'); path.setAttribute('stroke-linecap', 'round'); svg.appendChild(path); }}, function (rawPoint){ var circle=document.createElement('circle'); var dotSize=typeof _this2.dotSize==='function' ? _this2.dotSize():_this2.dotSize; circle.setAttribute('r', dotSize); circle.setAttribute('cx', rawPoint.x); circle.setAttribute('cy', rawPoint.y); circle.setAttribute('fill', rawPoint.color); svg.appendChild(circle); }); var prefix='data:image/svg+xml;base64,'; var header='';
var body=svg.innerHTML;
if(body===undefined){
var dummy=document.createElement('dummy');
var nodes=svg.childNodes;
dummy.innerHTML='';
for (var i=0; i < nodes.length; i +=1){
dummy.appendChild(nodes[i].cloneNode(true));
}
body=dummy.innerHTML;
}
var footer='';
var data=header + body + footer;
return prefix + btoa(data);
};
SignaturePad.prototype.fromData=function (pointGroups){
var _this3=this;
this.clear();
this._fromData(pointGroups, function (curve, widths){
return _this3._drawCurve(curve, widths.start, widths.end);
}, function (rawPoint){
return _this3._drawDot(rawPoint);
});
this._data=pointGroups;
};
SignaturePad.prototype.toData=function (){
return this._data;
};
return SignaturePad;
})));
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}; Point.prototype.equals=function (other){ return this.x===other.x&&this.y===other.y&&this.time===other.time; }; function Bezier(startPoint, control1, control2, endPoint){ this.startPoint=startPoint; this.control1=control1; this.control2=control2; this.endPoint=endPoint; } Bezier.prototype.length=function (){ var steps=10; var length=0; var px=void 0; var py=void 0; for (var i=0; i <=steps; i +=1){ var t=i / steps; var cx=this._point(t, this.startPoint.x, this.control1.x, this.control2.x, this.endPoint.x); var cy=this._point(t, this.startPoint.y, this.control1.y, this.control2.y, this.endPoint.y); if(i > 0){ var xdiff=cx - px; var ydiff=cy - py; length +=Math.sqrt(xdiff * xdiff + ydiff * ydiff); } px=cx; py=cy; } return length; }; Bezier.prototype._point=function (t, start, c1, c2, end){ return start * (1.0 - t) * (1.0 - t) * (1.0 - t) + 3.0 * c1 * (1.0 - t) * (1.0 - t) * t + 3.0 * c2 * (1.0 - t) * t * t + end * t * t * t; }; function throttle(func, wait, options){ var context, args, result; var timeout=null; var previous=0; if(!options) options={}; var later=function later(){ previous=options.leading===false ? 0:Date.now(); timeout=null; result=func.apply(context, args); if(!timeout) context=args=null; }; return function (){ var now=Date.now(); if(!previous&&options.leading===false) previous=now; var remaining=wait - (now - previous); context=this; args=arguments; if(remaining <=0||remaining > wait){ if(timeout){ clearTimeout(timeout); timeout=null; } previous=now; result=func.apply(context, args); if(!timeout) context=args=null; }else if(!timeout&&options.trailing!==false){ timeout=setTimeout(later, remaining); } return result; };} function SignaturePad(canvas, options){ var self=this; var opts=options||{}; this.velocityFilterWeight=opts.velocityFilterWeight||0.7; this.minWidth=opts.minWidth||0.5; this.maxWidth=opts.maxWidth||2.5; this.throttle='throttle' in opts ? opts.throttle:16; this.minDistance='minDistance' in opts ? opts.minDistance:5; if(this.throttle){ this._strokeMoveUpdate=throttle(SignaturePad.prototype._strokeUpdate, this.throttle); }else{ this._strokeMoveUpdate=SignaturePad.prototype._strokeUpdate; } this.dotSize=opts.dotSize||function (){ return (this.minWidth + this.maxWidth) / 2; }; this.penColor=opts.penColor||'black'; this.backgroundColor=opts.backgroundColor||'rgba(0,0,0,0)'; this.onBegin=opts.onBegin; this.onEnd=opts.onEnd; this._canvas=canvas; this._ctx=canvas.getContext('2d'); this.clear(); this._handleMouseDown=function (event){ if(event.which===1){ self._mouseButtonDown=true; self._strokeBegin(event); }}; this._handleMouseMove=function (event){ if(self._mouseButtonDown){ self._strokeMoveUpdate(event); }}; this._handleMouseUp=function (event){ if(event.which===1&&self._mouseButtonDown){ self._mouseButtonDown=false; self._strokeEnd(event); }}; this._handleTouchStart=function (event){ if(event.targetTouches.length===1){ var touch=event.changedTouches[0]; self._strokeBegin(touch); }}; this._handleTouchMove=function (event){ event.preventDefault(); var touch=event.targetTouches[0]; self._strokeMoveUpdate(touch); }; this._handleTouchEnd=function (event){ var wasCanvasTouched=event.target===self._canvas; if(wasCanvasTouched){ event.preventDefault(); self._strokeEnd(event); }}; this.on(); } SignaturePad.prototype.clear=function (){ var ctx=this._ctx; var canvas=this._canvas; ctx.fillStyle=this.backgroundColor; ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.fillRect(0, 0, canvas.width, canvas.height); this._data=[]; this._reset(); this._isEmpty=true; }; SignaturePad.prototype.fromDataURL=function (dataUrl){ var _this=this; var options=arguments.length > 1&&arguments[1]!==undefined ? arguments[1]:{}; var image=new Image(); var ratio=options.ratio||window.devicePixelRatio||1; var width=options.width||this._canvas.width / ratio; var height=options.height||this._canvas.height / ratio; this._reset(); image.src=dataUrl; image.onload=function (){ _this._ctx.drawImage(image, 0, 0, width, height); }; this._isEmpty=false; }; SignaturePad.prototype.toDataURL=function (type){ var _canvas; switch (type){ case 'image/svg+xml': return this._toSVG(); default: for (var _len=arguments.length, options=Array(_len > 1 ? _len - 1:0), _key=1; _key < _len; _key++){ options[_key - 1]=arguments[_key]; } return (_canvas=this._canvas).toDataURL.apply(_canvas, [type].concat(options)); }}; SignaturePad.prototype.on=function (){ this._handleMouseEvents(); this._handleTouchEvents(); }; SignaturePad.prototype.off=function (){ this._canvas.removeEventListener('mousedown', this._handleMouseDown); this._canvas.removeEventListener('mousemove', this._handleMouseMove); document.removeEventListener('mouseup', this._handleMouseUp); this._canvas.removeEventListener('touchstart', this._handleTouchStart); this._canvas.removeEventListener('touchmove', this._handleTouchMove); this._canvas.removeEventListener('touchend', this._handleTouchEnd); }; SignaturePad.prototype.isEmpty=function (){ return this._isEmpty; }; SignaturePad.prototype._strokeBegin=function (event){ this._data.push([]); this._reset(); this._strokeUpdate(event); if(typeof this.onBegin==='function'){ this.onBegin(event); }}; SignaturePad.prototype._strokeUpdate=function (event){ var x=event.clientX; var y=event.clientY; var point=this._createPoint(x, y); var lastPointGroup=this._data[this._data.length - 1]; var lastPoint=lastPointGroup&&lastPointGroup[lastPointGroup.length - 1]; var isLastPointTooClose=lastPoint&&point.distanceTo(lastPoint) < this.minDistance; if(!(lastPoint&&isLastPointTooClose)){ var _addPoint=this._addPoint(point), curve=_addPoint.curve, widths=_addPoint.widths; if(curve&&widths){ this._drawCurve(curve, widths.start, widths.end); } this._data[this._data.length - 1].push({ x: point.x, y: point.y, time: point.time, color: this.penColor }); }}; SignaturePad.prototype._strokeEnd=function (event){ var canDrawCurve=this.points.length > 2; var point=this.points[0]; if(!canDrawCurve&&point){ this._drawDot(point); } if(point){ var lastPointGroup=this._data[this._data.length - 1]; var lastPoint=lastPointGroup[lastPointGroup.length - 1]; if(!point.equals(lastPoint)){ lastPointGroup.push({ x: point.x, y: point.y, time: point.time, color: this.penColor }); }} if(typeof this.onEnd==='function'){ this.onEnd(event); }}; SignaturePad.prototype._handleMouseEvents=function (){ this._mouseButtonDown=false; this._canvas.addEventListener('mousedown', this._handleMouseDown); this._canvas.addEventListener('mousemove', this._handleMouseMove); document.addEventListener('mouseup', this._handleMouseUp); }; SignaturePad.prototype._handleTouchEvents=function (){ this._canvas.style.msTouchAction='none'; this._canvas.style.touchAction='none'; this._canvas.addEventListener('touchstart', this._handleTouchStart); this._canvas.addEventListener('touchmove', this._handleTouchMove); this._canvas.addEventListener('touchend', this._handleTouchEnd); }; SignaturePad.prototype._reset=function (){ this.points=[]; this._lastVelocity=0; this._lastWidth=(this.minWidth + this.maxWidth) / 2; this._ctx.fillStyle=this.penColor; }; SignaturePad.prototype._createPoint=function (x, y, time){ var rect=this._canvas.getBoundingClientRect(); return new Point(x - rect.left, y - rect.top, time||new Date().getTime()); }; SignaturePad.prototype._addPoint=function (point){ var points=this.points; var tmp=void 0; points.push(point); if(points.length > 2){ if(points.length===3) points.unshift(points[0]); tmp=this._calculateCurveControlPoints(points[0], points[1], points[2]); var c2=tmp.c2; tmp=this._calculateCurveControlPoints(points[1], points[2], points[3]); var c3=tmp.c1; var curve=new Bezier(points[1], c2, c3, points[2]); var widths=this._calculateCurveWidths(curve); points.shift(); return { curve: curve, widths: widths };} return {};}; SignaturePad.prototype._calculateCurveControlPoints=function (s1, s2, s3){ var dx1=s1.x - s2.x; var dy1=s1.y - s2.y; var dx2=s2.x - s3.x; var dy2=s2.y - s3.y; var m1={ x: (s1.x + s2.x) / 2.0, y: (s1.y + s2.y) / 2.0 }; var m2={ x: (s2.x + s3.x) / 2.0, y: (s2.y + s3.y) / 2.0 }; var l1=Math.sqrt(dx1 * dx1 + dy1 * dy1); var l2=Math.sqrt(dx2 * dx2 + dy2 * dy2); var dxm=m1.x - m2.x; var dym=m1.y - m2.y; var k=l2 / (l1 + l2); var cm={ x: m2.x + dxm * k, y: m2.y + dym * k }; var tx=s2.x - cm.x; var ty=s2.y - cm.y; return { c1: new Point(m1.x + tx, m1.y + ty), c2: new Point(m2.x + tx, m2.y + ty) };}; SignaturePad.prototype._calculateCurveWidths=function (curve){ var startPoint=curve.startPoint; var endPoint=curve.endPoint; var widths={ start: null, end: null }; var velocity=this.velocityFilterWeight * endPoint.velocityFrom(startPoint) + (1 - this.velocityFilterWeight) * this._lastVelocity; var newWidth=this._strokeWidth(velocity); widths.start=this._lastWidth; widths.end=newWidth; this._lastVelocity=velocity; this._lastWidth=newWidth; return widths; }; SignaturePad.prototype._strokeWidth=function (velocity){ return Math.max(this.maxWidth / (velocity + 1), this.minWidth); }; SignaturePad.prototype._drawPoint=function (x, y, size){ var ctx=this._ctx; ctx.moveTo(x, y); ctx.arc(x, y, size, 0, 2 * Math.PI, false); this._isEmpty=false; }; SignaturePad.prototype._drawCurve=function (curve, startWidth, endWidth){ var ctx=this._ctx; var widthDelta=endWidth - startWidth; var drawSteps=Math.floor(curve.length()); ctx.beginPath(); for (var i=0; i < drawSteps; i +=1){ var t=i / drawSteps; var tt=t * t; var ttt=tt * t; var u=1 - t; var uu=u * u; var uuu=uu * u; var x=uuu * curve.startPoint.x; x +=3 * uu * t * curve.control1.x; x +=3 * u * tt * curve.control2.x; x +=ttt * curve.endPoint.x; var y=uuu * curve.startPoint.y; y +=3 * uu * t * curve.control1.y; y +=3 * u * tt * curve.control2.y; y +=ttt * curve.endPoint.y; var width=startWidth + ttt * widthDelta; this._drawPoint(x, y, width); } ctx.closePath(); ctx.fill(); }; SignaturePad.prototype._drawDot=function (point){ var ctx=this._ctx; var width=typeof this.dotSize==='function' ? this.dotSize():this.dotSize; ctx.beginPath(); this._drawPoint(point.x, point.y, width); ctx.closePath(); ctx.fill(); }; SignaturePad.prototype._fromData=function (pointGroups, drawCurve, drawDot){ for (var i=0; i < pointGroups.length; i +=1){ var group=pointGroups[i]; if(group.length > 1){ for (var j=0; j < group.length; j +=1){ var rawPoint=group[j]; var point=new Point(rawPoint.x, rawPoint.y, rawPoint.time); var color=rawPoint.color; if(j===0){ this.penColor=color; this._reset(); this._addPoint(point); }else if(j!==group.length - 1){ var _addPoint2=this._addPoint(point), curve=_addPoint2.curve, widths=_addPoint2.widths; if(curve&&widths){ drawCurve(curve, widths, color); }}else{ }} }else{ this._reset(); var _rawPoint=group[0]; drawDot(_rawPoint); }} }; SignaturePad.prototype._toSVG=function (){ var _this2=this; var pointGroups=this._data; var canvas=this._canvas; var ratio=Math.max(window.devicePixelRatio||1, 1); var minX=0; var minY=0; var maxX=canvas.width / ratio; var maxY=canvas.height / ratio; var svg=document.createElementNS('http://www.w3.org/2000/svg', 'svg'); svg.setAttributeNS(null, 'width', canvas.width); svg.setAttributeNS(null, 'height', canvas.height); this._fromData(pointGroups, function (curve, widths, color){ var path=document.createElement('path'); if(!isNaN(curve.control1.x)&&!isNaN(curve.control1.y)&&!isNaN(curve.control2.x)&&!isNaN(curve.control2.y)){ var attr='M ' + curve.startPoint.x.toFixed(3) + ',' + curve.startPoint.y.toFixed(3) + ' ' + ('C ' + curve.control1.x.toFixed(3) + ',' + curve.control1.y.toFixed(3) + ' ') + (curve.control2.x.toFixed(3) + ',' + curve.control2.y.toFixed(3) + ' ') + (curve.endPoint.x.toFixed(3) + ',' + curve.endPoint.y.toFixed(3)); path.setAttribute('d', attr); path.setAttribute('stroke-width', (widths.end * 2.25).toFixed(3)); path.setAttribute('stroke', color); path.setAttribute('fill', 'none'); path.setAttribute('stroke-linecap', 'round'); svg.appendChild(path); }}, function (rawPoint){ var circle=document.createElement('circle'); var dotSize=typeof _this2.dotSize==='function' ? _this2.dotSize():_this2.dotSize; circle.setAttribute('r', dotSize); circle.setAttribute('cx', rawPoint.x); circle.setAttribute('cy', rawPoint.y); circle.setAttribute('fill', rawPoint.color); svg.appendChild(circle); }); var prefix='data:image/svg+xml;base64,'; var header='