mxAbstractCanvas2D.prototype.begin=function(){this.lastY=this.lastX=0;this.path=[]};mxAbstractCanvas2D.prototype.moveTo=function(a,b){this.addOp(this.moveOp,a,b)};mxAbstractCanvas2D.prototype.lineTo=function(a,b){this.addOp(this.lineOp,a,b)};mxAbstractCanvas2D.prototype.quadTo=function(a,b,c,d){this.addOp(this.quadOp,a,b,c,d)};mxAbstractCanvas2D.prototype.curveTo=function(a,b,c,d,e,f){this.addOp(this.curveOp,a,b,c,d,e,f)};