var E=parseInt(D.paddingLeft)||0;var F=parseInt(D.paddingRight)||0;A.width=this.el.dom.clientWidth-E-F;if(C){B.putImageData(C,0,0);}},_handleMouseDown:function(e){if(e.browserEvent.which===1){this.mouse_btn_down=true;this.strokeBegin(e);}},_handleMouseMove:function(e){if(this.mouse_btn_down){this.strokeMoveUpdate(e);
}},_handleMouseUp:function(e){if(e.browserEvent.which===1&&this.mouse_btn_down){this.mouse_btn_down=false;this.strokeEnd(e);}},_handleTouchStart:function(e){e.preventDefault();if(e.browserEvent.targetTouches.length===1){this.strokeBegin(e);}},_handleTouchMove:function(e){e.preventDefault();
this.strokeMoveUpdate(e);},_handleTouchEnd:function(e){var A=e.target===this.canvasEl().dom;if(A){e.preventDefault();this.strokeEnd(e);}},reset:function(){this._lastPoints=[];this._lastVelocity=0;this._lastWidth=(this.min_width+this.max_width)/2;this.canvasElCtx().fillStyle=this.dot_color;
-},strokeMoveUpdate:function(e){this.strokeUpdate(e);if(this.throttle){this.throttle(this.strokeUpdate,this.throttle);}else{this.strokeUpdate(e);}},strokeBegin:function(e){var A={color:this.dot_color,points:[]};if(typeof this.onBegin==='function'){this.onBegin(e);
+},strokeMoveUpdate:function(e){this.strokeUpdate(e);if(this.throttle){this.throttleStroke(this.strokeUpdate,this.throttle);}else{this.strokeUpdate(e);}},strokeBegin:function(e){var A={color:this.dot_color,points:[]};if(typeof this.onBegin==='function'){this.onBegin(e);
}this.curve_data.push(A);this.reset();this.strokeUpdate(e);},strokeUpdate:function(e){var A=this.canvasEl().dom.getBoundingClientRect();var B=new this.Point(e.xy[0]-A.left,e.xy[1]-A.top,new Date().getTime());var C=this.curve_data[this.curve_data.length-1];
var D=C.points;var E=D.length>0&&D[D.length-1];var F=E?B.distanceTo(E)<=this.min_distance:false;var G=C.color;if(!E||!(E&&F)){var H=this.addPoint(B);if(!E){this.drawDot({color:G,point:B});}else if(H){this.drawCurve({color:G,curve:H});}D.push({time:B.time,x:B.x,y:B.y}
);}},strokeEnd:function(e){this.strokeUpdate(e);if(typeof this.onEnd==='function'){this.onEnd(e);}},addPoint:function(A){var B=this._lastPoints;B.push(A);if(B.length>2){if(B.length===3){B.unshift(B[0]);}var C=this.calculateCurveWidths(B[1],B[2]);var D=this.Bezier.fromPoints(B,C,this);
var c3=this.calculateControlPoints(A[1],A[2],A[3],C).c1;return new Bezier(A[1],c2,c3,A[2],B.start,B.end);};Bezier.calculateControlPoints=function(s1,s2,s3,A){var B=s1.x-s2.x;var C=s1.y-s2.y;var D=s2.x-s3.x;var E=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(B*B+C*C);var l2=Math.sqrt(D*D+E*E);var F=m1.x-m2.x;var G=m1.y-m2.y;var k=l2/(l1+l2);var cm={x:m2.x+F*k,y:m2.y+G*k};var tx=s2.x-cm.x;var ty=s2.y-cm.y;return {c1:new A.Point(m1.x+tx,m1.y+ty),c2:new A.Point(m2.x+tx,m2.y+ty)}
;};Bezier.prototype.length=function(){var A=10;var B=0;var px;var py;for(var i=0;i<=A;i+=1){var t=i/A;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 C=cx-px;var D=cy-py;B+=Math.sqrt(C*C+D*D);}px=cx;py=cy;}return B;};Bezier.prototype.point=function(t,A,c1,c2,B){return (A*(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)+(B*t*t*t);};return Bezier;}()),throttle:function(fn,A){if(A===void 0){A=250;
+if(i>0){var C=cx-px;var D=cy-py;B+=Math.sqrt(C*C+D*D);}px=cx;py=cy;}return B;};Bezier.prototype.point=function(t,A,c1,c2,B){return (A*(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)+(B*t*t*t);};return Bezier;}()),throttleStroke:function(fn,A){if(A===void 0){A=250;
}var B=0;var C=null;var D;var E;var F;var G=function(){B=Date.now();C=null;D=fn.apply(E,F);if(!C){E=null;F=[];}};return function H(){var I=[];for(var _i=0;_i<arguments.length;_i++){I[_i]=arguments[_i];}var J=Date.now();var K=A-(J-B);E=this;F=I;if(K<=0||K>A){if(C){clearTimeout(C);
C=null;}B=J;D=fn.apply(E,F);if(!C){E=null;F=[];}}else if(!C){C=window.setTimeout(G,K);}return D;};}});
projects / roojs1 / blobdiff