/*
	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.matrix"]){dojo._hasResource["dojox.gfx.matrix"]=true;dojo.provide("dojox.gfx.matrix");(function(){var m=dojox.gfx.matrix;var _1={};m._degToRad=function(_2){return _1[_2]||(_1[_2]=(Math.PI*_2/180));};m._radToDeg=function(_3){return _3/Math.PI*180;};m.Matrix2D=function(_4){if(_4){if(typeof _4=="number"){this.xx=this.yy=_4;}else{if(_4 instanceof Array){if(_4.length>0){var _5=m.normalize(_4[0]);for(var i=1;i<_4.length;++i){var l=_5,r=dojox.gfx.matrix.normalize(_4[i]);_5=new m.Matrix2D();_5.xx=l.xx*r.xx+l.xy*r.yx;_5.xy=l.xx*r.xy+l.xy*r.yy;_5.yx=l.yx*r.xx+l.yy*r.yx;_5.yy=l.yx*r.xy+l.yy*r.yy;_5.dx=l.xx*r.dx+l.xy*r.dy+l.dx;_5.dy=l.yx*r.dx+l.yy*r.dy+l.dy;}dojo.mixin(this,_5);}}else{dojo.mixin(this,_4);}}}};dojo.extend(m.Matrix2D,{xx:1,xy:0,yx:0,yy:1,dx:0,dy:0});dojo.mixin(m,{identity:new m.Matrix2D(),flipX:new m.Matrix2D({xx:-1}),flipY:new m.Matrix2D({yy:-1}),flipXY:new m.Matrix2D({xx:-1,yy:-1}),translate:function(a,b){if(arguments.length>1){return new m.Matrix2D({dx:a,dy:b});}return new m.Matrix2D({dx:a.x,dy:a.y});},scale:function(a,b){if(arguments.length>1){return new m.Matrix2D({xx:a,yy:b});}if(typeof a=="number"){return new m.Matrix2D({xx:a,yy:a});}return new m.Matrix2D({xx:a.x,yy:a.y});},rotate:function(_6){var c=Math.cos(_6);var s=Math.sin(_6);return new m.Matrix2D({xx:c,xy:-s,yx:s,yy:c});},rotateg:function(_7){return m.rotate(m._degToRad(_7));},skewX:function(_8){return new m.Matrix2D({xy:Math.tan(_8)});},skewXg:function(_9){return m.skewX(m._degToRad(_9));},skewY:function(_a){return new m.Matrix2D({yx:Math.tan(_a)});},skewYg:function(_b){return m.skewY(m._degToRad(_b));},reflect:function(a,b){if(arguments.length==1){b=a.y;a=a.x;}var a2=a*a,b2=b*b,n2=a2+b2,xy=2*a*b/n2;return new m.Matrix2D({xx:2*a2/n2-1,xy:xy,yx:xy,yy:2*b2/n2-1});},project:function(a,b){if(arguments.length==1){b=a.y;a=a.x;}var a2=a*a,b2=b*b,n2=a2+b2,xy=a*b/n2;return new m.Matrix2D({xx:a2/n2,xy:xy,yx:xy,yy:b2/n2});},normalize:function(_c){return (_c instanceof m.Matrix2D)?_c:new m.Matrix2D(_c);},clone:function(_d){var _e=new m.Matrix2D();for(var i in _d){if(typeof (_d[i])=="number"&&typeof (_e[i])=="number"&&_e[i]!=_d[i]){_e[i]=_d[i];}}return _e;},invert:function(_f){var M=m.normalize(_f),D=M.xx*M.yy-M.xy*M.yx,M=new m.Matrix2D({xx:M.yy/D,xy:-M.xy/D,yx:-M.yx/D,yy:M.xx/D,dx:(M.xy*M.dy-M.yy*M.dx)/D,dy:(M.yx*M.dx-M.xx*M.dy)/D});return M;},_multiplyPoint:function(_10,x,y){return {x:_10.xx*x+_10.xy*y+_10.dx,y:_10.yx*x+_10.yy*y+_10.dy};},multiplyPoint:function(_11,a,b){var M=m.normalize(_11);if(typeof a=="number"&&typeof b=="number"){return m._multiplyPoint(M,a,b);}return m._multiplyPoint(M,a.x,a.y);},multiply:function(_12){var M=m.normalize(_12);for(var i=1;i<arguments.length;++i){var l=M,r=m.normalize(arguments[i]);M=new m.Matrix2D();M.xx=l.xx*r.xx+l.xy*r.yx;M.xy=l.xx*r.xy+l.xy*r.yy;M.yx=l.yx*r.xx+l.yy*r.yx;M.yy=l.yx*r.xy+l.yy*r.yy;M.dx=l.xx*r.dx+l.xy*r.dy+l.dx;M.dy=l.yx*r.dx+l.yy*r.dy+l.dy;}return M;},_sandwich:function(_13,x,y){return m.multiply(m.translate(x,y),_13,m.translate(-x,-y));},scaleAt:function(a,b,c,d){switch(arguments.length){case 4:return m._sandwich(m.scale(a,b),c,d);case 3:if(typeof c=="number"){return m._sandwich(m.scale(a),b,c);}return m._sandwich(m.scale(a,b),c.x,c.y);}return m._sandwich(m.scale(a),b.x,b.y);},rotateAt:function(_14,a,b){if(arguments.length>2){return m._sandwich(m.rotate(_14),a,b);}return m._sandwich(m.rotate(_14),a.x,a.y);},rotategAt:function(_15,a,b){if(arguments.length>2){return m._sandwich(m.rotateg(_15),a,b);}return m._sandwich(m.rotateg(_15),a.x,a.y);},skewXAt:function(_16,a,b){if(arguments.length>2){return m._sandwich(m.skewX(_16),a,b);}return m._sandwich(m.skewX(_16),a.x,a.y);},skewXgAt:function(_17,a,b){if(arguments.length>2){return m._sandwich(m.skewXg(_17),a,b);}return m._sandwich(m.skewXg(_17),a.x,a.y);},skewYAt:function(_18,a,b){if(arguments.length>2){return m._sandwich(m.skewY(_18),a,b);}return m._sandwich(m.skewY(_18),a.x,a.y);},skewYgAt:function(_19,a,b){if(arguments.length>2){return m._sandwich(m.skewYg(_19),a,b);}return m._sandwich(m.skewYg(_19),a.x,a.y);}});})();dojox.gfx.Matrix2D=dojox.gfx.matrix.Matrix2D;}