/*
	Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
	Available via Academic Free License >= 2.1 OR the modified BSD license.
	see: http://dojotoolkit.org/license for details
*/


if(!dojo._hasResource["dojox.gfx.arc"]){dojo._hasResource["dojox.gfx.arc"]=true;dojo.provide("dojox.gfx.arc");dojo.require("dojox.gfx.matrix");(function(){var m=dojox.gfx.matrix,_1=2*Math.PI,_2=Math.PI/4,_3=Math.PI/8,_4=_2+_3,_5=_6(_3);function _6(_7){var _8=Math.cos(_7),_9=Math.sin(_7),p2={x:_8+(4/3)*(1-_8),y:_9-(4/3)*_8*(1-_8)/_9};return {s:{x:_8,y:-_9},c1:{x:p2.x,y:-p2.y},c2:p2,e:{x:_8,y:_9}};};dojox.gfx.arc={unitArcAsBezier:_6,curvePI4:_5,arcAsBezier:function(_a,rx,ry,_b,_c,_d,x,y){_c=Boolean(_c);_d=Boolean(_d);var _e=m._degToRad(_b),_f=rx*rx,ry2=ry*ry,pa=m.multiplyPoint(m.rotate(-_e),{x:(_a.x-x)/2,y:(_a.y-y)/2}),_10=pa.x*pa.x,_11=pa.y*pa.y,c1=Math.sqrt((_f*ry2-_f*_11-ry2*_10)/(_f*_11+ry2*_10));if(isNaN(c1)){c1=0;}var ca={x:c1*rx*pa.y/ry,y:-c1*ry*pa.x/rx};if(_c==_d){ca={x:-ca.x,y:-ca.y};}var c=m.multiplyPoint([m.translate((_a.x+x)/2,(_a.y+y)/2),m.rotate(_e)],ca);var _12=m.normalize([m.translate(c.x,c.y),m.rotate(_e),m.scale(rx,ry)]);var _13=m.invert(_12),sp=m.multiplyPoint(_13,_a),ep=m.multiplyPoint(_13,x,y),_14=Math.atan2(sp.y,sp.x),_15=Math.atan2(ep.y,ep.x),_16=_14-_15;if(_d){_16=-_16;}if(_16<0){_16+=_1;}else{if(_16>_1){_16-=_1;}}var _17=_3,_18=_5,_19=_d?_17:-_17,_1a=[];for(var _1b=_16;_1b>0;_1b-=_2){if(_1b<_4){_17=_1b/2;_18=_6(_17);_19=_d?_17:-_17;_1b=0;}var c1,c2,e,M=m.normalize([_12,m.rotate(_14+_19)]);if(_d){c1=m.multiplyPoint(M,_18.c1);c2=m.multiplyPoint(M,_18.c2);e=m.multiplyPoint(M,_18.e);}else{c1=m.multiplyPoint(M,_18.c2);c2=m.multiplyPoint(M,_18.c1);e=m.multiplyPoint(M,_18.s);}_1a.push([c1.x,c1.y,c2.x,c2.y,e.x,e.y]);_14+=2*_19;}return _1a;}};})();}