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August 5, 2018 05:47
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Calculate percentage of scroll
Then uses tweenmax callbacks to continue the animation
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| <!DOCTYPE html> | |
| <html lang=""> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title></title> | |
| <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script> | |
| <script src="http://cdnjs.cloudflare.com/ajax/libs/gsap/1.10.1/TweenMax.min.js"></script> | |
| <script> | |
| $(function(){ | |
| tl = new TimelineMax({paused: true}); | |
| tl.to($("div"), .2, {width: 50, | |
| onComplete: withDraw, | |
| onReverseComplete: function(){ console.log("start"); } | |
| }); | |
| function withDraw(){ | |
| TweenMax.to($("div"), .2, {marginLeft:50, width:10, onComplete:down}); | |
| } | |
| function down(){ | |
| TweenMax.to($("div"), .2, {height:50, onComplete:downSquare}); | |
| } | |
| function downSquare(){ | |
| TweenMax.to($("div"), .2, {marginTop: 50,height:10, onComplete:left}); | |
| } | |
| function left(){ | |
| TweenMax.to($("div"), .2, {width:50, marginLeft:0, onComplete:leftSquared}); | |
| } | |
| function leftSquared(){ | |
| TweenMax.to($("div"), .2, {width:10, onComplete:backToTop}); | |
| } | |
| function backToTop(){ | |
| TweenMax.to($("div"), .2, {height:50, marginTop:0, onComplete:square}); | |
| } | |
| function square(){ | |
| TweenMax.to($("div"), .2, {height:10}); | |
| } | |
| $(window).scroll(function(){ | |
| var progress = tl.totalProgress(); | |
| var pct = $(this).scrollTop() / ($(document).height() - $(window).height()); | |
| tl.progress(pct); | |
| console.log(pct); | |
| }); | |
| }); | |
| </script> | |
| <style> | |
| body{height: 2000px;} | |
| div{ | |
| height: 10px; | |
| width: 0px; | |
| background-color: red; | |
| position: fixed; | |
| top: 0px; | |
| left: 0px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div></div> | |
| </body> | |
| </html> | |
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