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From 2014.igem.org

recalcRingSize = function(setPosition) {

 var placeholder = $("#img-placeholder");
 var ring = $("#ring");
 var width = placeholder.outerWidth(false);
 var position = placeholder.offset();
 position.left = position.left - $(".container").offset().left;
 if(setPosition){
   ring.css(position);
 }
 ring.css("width", width+"px");
 placeholder.css("height", ring.height()+"px");

};

var moveRing = false; function setTweenParams(tween) {

 var params = {css: {
   left: $('#ring').width()/-2,
   top: $('.second').position().top + ($('.second').outerHeight() - $('#ring').height())/2
 }};
 tween.updateTo(params, false);

}

var moveRingTween = new TweenMax("#ring", 2, {}); var scene = new ScrollScene({duration: 1000}); var timeline = new TimelineMax();

getDropdown = function(){ return $(this).parent().children('.dropdown').html(); }

$(document).ready(function(){

 /* check if ring should be moved by visability of placholder */
 if ($('#placeholder-2').css('display') != "none"){
   moveRing = true;
 }

 /* Animate ring movement */
 controller = new ScrollMagic();
 if(moveRing){
   $("#ring").load(function(){
     recalcRingSize(true);
     $("#img-placeholder img").css("display", "none");
     $("#ring").css("visibility", "");
     setTweenParams(moveRingTween);
     timeline.add(moveRingTween, 0);
     timeline.to("#ring", 4, { rotation: 360}, 0);
     scene.setTween(timeline);
   });
 }
 else {
   /* only rotate Ring, dont move it on small devices */
   timeline.to("#placeholder", 4, { rotation: 360}, 0);
 }
 
 scene
   .setTween(timeline)
   .addTo(controller);
 scene2 = new ScrollScene({duration: 10});
 scene2.setTween(TweenMax.to("#front-nav ul", 2, { padding: "10px 20px"})).addTo(controller);
 //scene.addIndicators();

 $("#front-nav ul li a")
 .popover({trigger: 'manual', html: true, content: getDropdown})
 .mouseenter(function(){
    $(this).find('img').animate({opacity: 0}, 200);
    $(this).popover('show');})
 .mouseleave(function(){
    $this = $(this)
    $this.find('img').stop(true, true);
    $this.find('img').css("opacity", 1);
    var timeoutId = setTimeout(function(){
       $this.popover('hide');
    }, 650);
    $this.siblings(".popover")
       .mouseenter(function() {clearTimeout(timeoutId);})
       .mouseleave(function() {$this.popover('hide');});
 });
 //updateScrollVars();

 TweenMax.to('#scrollNag', 2, {opacity:1, repeat: -1, yoyo: true});

 $('#scrollNag').click(function() {
    $('body').scrollTo('#second', 1500, {easing: "easeInOutCubic"})
 });

});

$( window ).resize(function() {

 if ($('#placeholder-2').css('display') != "none")
   moveRing = true;
 else
   moveRing = false;

 if(moveRing){
   recalcRingSize(false);
   setTweenParams(moveRingTween);
   scene.setTween(timeline);
 }
 //updateScrollVars();

});

//$(window).load(updateScrollVars);

jQuery.extend(jQuery.easing, { easeInOutCubic: function (x, t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t*t + b; return c/2*((t-=2)*t*t + 2) + b; } });

/* jQuery.extend(jQuery.easing, {

 easeOutQuint: function(x, t, b, c, d) {
   return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
 }

});

var wheel = false, $docH, $scrollTop;

function updateScrollVars(){

 $docH = $(document).outerHeight() - $(window).height(),
 $scrollTop = $(document).scrollTop();

}

$(window).bind('scroll', function() {

   if (wheel === false) {
       $scrollTop = $(this).scrollTop();
   }

});

$(document).bind('DOMMouseScroll mousewheel', function(e, delta) {

   delta = delta || -e.originalEvent.detail / 3 || e.originalEvent.wheelDelta / 120;
   wheel = true;
   var isWebkit = 'WebkitAppearance' in document.documentElement.style;
   $scrollTop = Math.min($docH, Math.max(0, parseInt($scrollTop - delta * 30)));
   console.log(delta, $scrollTop, $docH);
   $(isWebkit ? 'body' : 'html').stop().animate({
       scrollTop: $scrollTop + 'px'
   }, 2000, 'easeOutQuint', function() {
       wheel = false;
   });
   return false;

});

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