Andrej Cimperšek - diploma

/*

        Copyright (c) 2004-2010, 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.gradutils"]){

dojo._hasResource["dojox.gfx.gradutils"]=true;

dojo.provide("dojox.gfx.gradutils");

dojo.require("dojox.gfx.matrix");

(function(){

var d=dojo,m=dojox.gfx.matrix,C=d.Color;

function _1(o,c){

if(o<=0){

return c[0].color;

}

var _2=c.length;

if(o>=1){

return c[_2-1].color;

}

for(var i=0;i<_2;++i){

var _3=c[i];

if(_3.offset>=o){

if(i){

var _4=c[i-1];

return d.blendColors(new C(_4.color),new C(_3.color),(o-_4.offset)/(_3.offset-_4.offset));

}

return _3.color;

}

}

return c[_2-1].color;

};

dojox.gfx.gradutils.getColor=function(_5,pt){

var o;

if(_5){

switch(_5.type){

case "linear":

var _6=Math.atan2(_5.y2-_5.y1,_5.x2-_5.x1),_7=m.rotate(-_6),_8=m.project(_5.x2-_5.x1,_5.y2-_5.y1),p=m.multiplyPoint(_8,pt),_9=m.multiplyPoint(_8,_5.x1,_5.y1),_a=m.multiplyPoint(_8,_5.x2,_5.y2),_b=m.multiplyPoint(_7,_a.x-_9.x,_a.y-_9.y).x,o=m.multiplyPoint(_7,p.x-_9.x,p.y-_9.y).x/_b;

break;

case "radial":

var dx=pt.x-_5.cx,dy=pt.y-_5.cy,o=Math.sqrt(dx*dx+dy*dy)/_5.r;

break;

}

return _1(o,_5.colors);

}

return new C(_5||[0,0,0,0]);

};

dojox.gfx.gradutils.reverse=function(_c){

if(_c){

switch(_c.type){

case "linear":

case "radial":

_c=dojo.delegate(_c);

if(_c.colors){

var c=_c.colors,l=c.length,i=0,_d,n=_c.colors=new Array(c.length);

for(;i<l;++i){

_d=c[i];

n[i]={offset:1-_d.offset,color:_d.color};

}

n.sort(function(a,b){

return a.offset-b.offset;

});

}

break;

}

}

return _c;

};

})();

}