| /* |
| Copyright (c) 2004-2009, 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; |
| m._degToRad=function(_2){ |
| return 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(_d){ |
| var c=Math.cos(_d); |
| var s=Math.sin(_d); |
| return new m.Matrix2D({xx:c,xy:-s,yx:s,yy:c}); |
| },rotateg:function(_10){ |
| return m.rotate(m._degToRad(_10)); |
| },skewX:function(_11){ |
| return new m.Matrix2D({xy:Math.tan(_11)}); |
| },skewXg:function(_12){ |
| return m.skewX(m._degToRad(_12)); |
| },skewY:function(_13){ |
| return new m.Matrix2D({yx:Math.tan(_13)}); |
| },skewYg:function(_14){ |
| return m.skewY(m._degToRad(_14)); |
| },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(_21){ |
| return (_21 instanceof m.Matrix2D)?_21:new m.Matrix2D(_21); |
| },clone:function(_22){ |
| var obj=new m.Matrix2D(); |
| for(var i in _22){ |
| if(typeof (_22[i])=="number"&&typeof (obj[i])=="number"&&obj[i]!=_22[i]){ |
| obj[i]=_22[i]; |
| } |
| } |
| return obj; |
| },invert:function(_25){ |
| var M=m.normalize(_25),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(_28,x,y){ |
| return {x:_28.xx*x+_28.xy*y+_28.dx,y:_28.yx*x+_28.yy*y+_28.dy}; |
| },multiplyPoint:function(_2b,a,b){ |
| var M=m.normalize(_2b); |
| if(typeof a=="number"&&typeof b=="number"){ |
| return m._multiplyPoint(M,a,b); |
| } |
| return m._multiplyPoint(M,a.x,a.y); |
| },multiply:function(_2f){ |
| var M=m.normalize(_2f); |
| 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(_34,x,y){ |
| return m.multiply(m.translate(x,y),_34,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(_3b,a,b){ |
| if(arguments.length>2){ |
| return m._sandwich(m.rotate(_3b),a,b); |
| } |
| return m._sandwich(m.rotate(_3b),a.x,a.y); |
| },rotategAt:function(_3e,a,b){ |
| if(arguments.length>2){ |
| return m._sandwich(m.rotateg(_3e),a,b); |
| } |
| return m._sandwich(m.rotateg(_3e),a.x,a.y); |
| },skewXAt:function(_41,a,b){ |
| if(arguments.length>2){ |
| return m._sandwich(m.skewX(_41),a,b); |
| } |
| return m._sandwich(m.skewX(_41),a.x,a.y); |
| },skewXgAt:function(_44,a,b){ |
| if(arguments.length>2){ |
| return m._sandwich(m.skewXg(_44),a,b); |
| } |
| return m._sandwich(m.skewXg(_44),a.x,a.y); |
| },skewYAt:function(_47,a,b){ |
| if(arguments.length>2){ |
| return m._sandwich(m.skewY(_47),a,b); |
| } |
| return m._sandwich(m.skewY(_47),a.x,a.y); |
| },skewYgAt:function(_4a,a,b){ |
| if(arguments.length>2){ |
| return m._sandwich(m.skewYg(_4a),a,b); |
| } |
| return m._sandwich(m.skewYg(_4a),a.x,a.y); |
| }}); |
| })(); |
| dojox.gfx.Matrix2D=dojox.gfx.matrix.Matrix2D; |
| } |