Team:UT-Dallas/general.js

From 2014.igem.org

$(document).ready(function($) { // define params var duration = $("#parallax1").height() + $(window).height(); var bgPosMovement = "0 " + (duration*0.8) + "px";

// init controller var controller = new ScrollMagic({globalSceneOptions: {triggerHook: "onEnter", duration: duration}});

// build scenes new ScrollScene({triggerElement: "#trigger1"}) .setTween(TweenMax.to("#parallax1", 1, {backgroundPosition: bgPosMovement, ease: Linear.easeNone})) .addTo(controller);

new ScrollScene({triggerElement: "#trigger2"}) .setTween(TweenMax.to("#parallax2", 1, {backgroundPosition: bgPosMovement, ease: Linear.easeNone})) .addTo(controller);

new ScrollScene({triggerElement: "#trigger3"}) .setTween(TweenMax.to("#parallax3", 1, {backgroundPosition: bgPosMovement, ease: Linear.easeNone})) .addTo(controller);

//this is the floating content var $floatingbox = $('#top_bar');

if ($('#content_body').length > 0) {

var bodyY = parseInt($('#content_body').offset().top) - 20; var originalX = $floatingbox.css('margin-left'); $(window).scroll(function() { var scrollY = $(window).scrollTop(); var isfixed = $floatingbox.css('position') == 'fixed'; if ($floatingbox.length > 0) { $floatingbox.html("srollY : " + scrollY + ", bodyY : " + bodyY + ", isfixed : " + isfixed); if (scrollY > bodyY && !isfixed) { $floatingbox.stop().css({ position: 'fixed', left: '50%', top: 20, marginLeft: -500 }); } else if (scrollY < bodyY && isfixed) { $floatingbox.css({ position: 'relative', left: 0, top: 0, marginLeft: originalX }); } } }); } });