(function(){var tags;var defaults={height:400,width:400,radius:150,speed:3,slower:0.99,timer:5,fontMultiplier:15,tagCSSOver:{border:'solid 1px #F89B17',color:'#F89B17'},tagCSSOut:{border:'',color:''}}
var forCalcs={halfHeight:null,halfWidth:null,hwratio:null,dtr:null,diametr:null,speedX:null,speedY:null,tLength:null}
var curState={mouseOver:null,lastFy:null,lastFx:null,sy:null,cy:null,sx:null,cx:null,mouseX:null,mouseY:null}
var options={};jQuery.fn.tagSphere=function(opt){options=jQuery.extend(defaults,opt);initContainer(this);initTags(this);initCalcs();deployTags();setInterval(updateTags,options.timer);return this;};function initCalcs(){forCalcs.halfHeight=options.height/2;forCalcs.halfWidth=options.width/2;forCalcs.speedX=options.speed/forCalcs.halfWidth;forCalcs.speedY=options.speed/forCalcs.halfHeight;forCalcs.dtr=Math.PI/180;forCalcs.diametr=options.radius*2;forCalcs.hwratio=options.height/options.width;forCalcs.whratio=options.width/options.height;forCalcs.tLength=tags.length-1;curState.mouseOver=false;curState.lastFx=options.speed;curState.lastFy=options.speed;}
function initContainer(tagCont){tagCont.height(options.height);tagCont.width(options.width);tagCont.css({'overflow':'hidden','position':'relative'});tagCont.mousemove(function(e){curState.mouseX=e.pageX-this.offsetLeft;curState.mouseY=e.pageY-this.offsetTop;});tagCont.hover(function(){curState.mouseOver=true;},function(){curState.mouseOver=false;});}
function initTags(tagCont){tags=tagCont.children('ul').children();tags.css({'position':'absolute','list-style-type':'none','list-style-position':'outside','list-style-image':'none'});for(var i=0;i<tags.length;i++){var jTag=jQuery(tags[i]);tags[i]=jTag;jTag.hover(function(){jQuery(this).css(options.tagCSSOver);},function(){jQuery(this).css(options.tagCSSOut);})}}
function deployTags(){var phi=0;var theta=0;var max=forCalcs.tLength+1;var i=0;while(i++<max){phi=Math.acos(-1+(2*i-1)/max);theta=Math.sqrt(max*Math.PI)*phi;tags[i-1].cx=options.radius*Math.cos(theta)*Math.sin(phi);tags[i-1].cy=options.radius*Math.sin(theta)*Math.sin(phi);tags[i-1].cz=options.radius*Math.cos(phi);tags[i-1].h=jQuery(tags[i-1]).height()/4;tags[i-1].w=jQuery(tags[i-1]).width()/4;}}
function calcRotation(fy,fx){curState.sy=Math.sin(fy*forCalcs.dtr);curState.cy=Math.cos(fy*forCalcs.dtr);curState.sx=Math.sin(fx*forCalcs.dtr);curState.cx=Math.cos(fx*forCalcs.dtr);}
function updateTags(){var fy;var fx;if(curState.mouseOver){fy=options.speed-forCalcs.speedY*curState.mouseY;fx=forCalcs.speedX*curState.mouseX-options.speed;}
else{fy=curState.lastFy*options.slower;fx=curState.lastFx*options.slower;}
curState.lastFy=fy;curState.lastFx=fx;if(Math.abs(fy)>0.01||Math.abs(fx)>0.01){calcRotation(fy,fx);j=-1;while(j++<forCalcs.tLength){rx1=tags[j].cx;ry1=tags[j].cy*curState.cy+tags[j].cz*-curState.sy;rz1=tags[j].cy*curState.sy+tags[j].cz*curState.cy;tags[j].cx=rx1*curState.cx+rz1*curState.sx;tags[j].cy=tags[j].cy*curState.cy+tags[j].cz*-curState.sy;tags[j].cz=rx1*-curState.sx+rz1*curState.cx;var per=forCalcs.diametr/(forCalcs.diametr+tags[j].cz);tags[j].x=tags[j].cx*per;tags[j].y=tags[j].cy*per;tags[j].alpha=per/2;tags[j].css({'left':forCalcs.whratio*(tags[j].x-tags[j].w*per)+forCalcs.halfWidth,'top':forCalcs.hwratio*(tags[j].y-tags[j].h*per)+forCalcs.halfHeight,'opacity':tags[j].alpha,'font-size':options.fontMultiplier*tags[j].alpha+'px','z-index':Math.round(-tags[j].cz)});}}}})()