function cRectangle(p1,p2){if((!p1)||(!$.isArray(p1))){p1=[0,0];}
if((!p2)||(!$.isArray(p2))){p2=[0,0];}
if(!p1[0]){p1[0]=0;}
if(!p1[1]){p1[1]=0;}
if(!p2[0]){p2[0]=0;}
if(!p2[1]){p2[1]=0;}
p1[0]=parseFloat(p1[0]);p1[1]=parseFloat(p1[1]);p2[0]=parseFloat(p2[0]);p2[1]=parseFloat(p2[1]);if(isNaN(p1[0])){p1[0]=0;}
if(isNaN(p1[1])){p1[1]=0;}
if(isNaN(p2[0])){p2[0]=0;}
if(isNaN(p2[1])){p2[1]=0;}
this._p1=p1;this._p2=p2;this._p1x=p1[0];this._p1y=p1[1];this._p2x=p2[0];this._p2y=p2[1];this._c=null;this._e=null;}
cRectangle.prototype.points=function(){return{'p1':this._p1,'p2':this._p2};}
cRectangle.prototype.p1p2=function(){return[this._p1,this._p2];}
cRectangle.prototype.p1=function(){return this._p1;}
cRectangle.prototype.p2=function(){return this._p2;}
cRectangle.prototype.sp1=function(){return'('+this._p1x+', '+this._p1y+')';}
cRectangle.prototype.sp2=function(){return'('+this._p2x+', '+this._p2y+')';}
cRectangle.prototype.minX=function(){return(this._p1x<this._p2x)?this._p1x:this._p2x;}
cRectangle.prototype.maxX=function(){return(this._p1x<this._p2x)?this._p2x:this._p1x;}
cRectangle.prototype.minY=function(){return(this._p1y<this._p2y)?this._p1y:this._p2y;}
cRectangle.prototype.maxY=function(){return(this._p1y<this._p2y)?this._p2y:this._p1y;}
cRectangle.prototype.center=function(){if(this._c===null){this._c=[(this._p1x+this._p2x)/2,(this._p1y+this._p2y)/2];}
return this._c;}
cRectangle.prototype.edges=function(){if(this._e===null){this._e=[[this._p1x,this._p1y],[this._p2x,this._p1y],[this._p2x,this._p2y],[this._p1x,this._p2y]];}
return this._e;}
cRectangle.prototype.centerArea=function(){var p1=[(this._p1x+2*this._p2x)/3,(this._p1y+2*this._p2y)/3];var p2=[(2*this._p1x+this._p2x)/3,(2*this._p1y+this._p2y)/3];return new cRectangle(p1,p2);}