溢出社区， 我一直在寻找可通过滚动播放的动画，然后我找到了
我想在缺乏 js 和 js 库知识的情况下做出类似的东西。 但即使复制并粘贴所有元素，它仍然不起作用。
// initialise ScrollMagic controller
var controller = new ScrollMagic.Controller();
// create Tween
var tween = TweenMax.to("#js-animation", 1.0, {
backgroundPosition: "100% 0",
ease: SteppedEase.config(480)
})
// build scene
var scene = new ScrollMagic.Scene({duration: 15000})
.triggerHook("onCenter")
.setPin("#js-pinned")
.setTween(tween)
.addTo(controller);body {
padding: 20px;
text-align: center;
}
.container {
font-size: 15em;
min-height: 110vh;
}
.cnc {
margin: auto;
width: 50%;
height: 50%;
background: url('http://image.gilawhost.com/16/12/29/9mq5kqgu.png') no-repeat 0 0%;
background-size: 100%;
}
h1 {
font-size: 1.2em;
}
p {
width: 60%;
margin: auto;
text-align: left;
}
.p {
margin-top: 120px;
font-size: 14px;
text-align: center;
}<!DOCTYPE html>
<!--
come from the demo de Tom Bennet
http://www.sitepoint.com/responsive-sprite-animations-imagemagick-greensock
-->
<html >
<head>
<meta charset="UTF-8">
<title>Demo 4: Synchronising Playback with the Scrollbar</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
</head>
<body>
<h1>Demo 4: Synchronising Playback with the Scrollbar</h1>
<p>A responsive sprite animation that is synchronised with the scrollbar, and that remains in a fixed position for its duration of 1500 pixels. Scroll up and down to control playback.</p>
<div class="container" id="js-pinned">
<div class="cnc" id="js-animation"></div>
</div>
<p class="p">Demo by Tom Bennet. <a href="http://www.sitepoint.com/responsive-sprite-animations-imagemagick-greensock" target="_blank">See article</a>.</p>
<script src='https://cdnjs.cloudflare.com/ajax/libs/gsap/1.16.1/TweenMax.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.2/ScrollMagic.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.2/plugins/animation.gsap.min.js'></script>
</body>
</html>我是不是遗漏了什么或者 Sprite 文件太重了？
最佳答案
您的 sprite PNG 很好 - 不太重。您只需要在图像元素上定义一些更明确的大小调整规则。
这是该元素现在的样子:
.cnc {
margin: auto;
width: 350px;
height: 200px;
background: url('http://image.gilawhost.com/16/12/29/9mq5kqgu.png') no-repeat 0 0%;
background-size: auto 100%;
}
请注意与 Sprite 动画的一帧成比例的宽度/高度尺寸，以及 background-size: auto 100%(这将使图像适应 100% 的高度 容器，但让宽度按比例增长)。
下面的工作示例 - 滚动:
// initialise ScrollMagic controller
var controller = new ScrollMagic.Controller();
// create Tween
var tween = TweenMax.to("#js-animation", 1.0, {
backgroundPosition: "100% 0",
ease: SteppedEase.config(479)
})
// build scene
var scene = new ScrollMagic.Scene({duration: 15000})
.triggerHook("onCenter")
.setPin("#js-pinned")
.setTween(tween)
.addTo(controller);body {
padding: 20px;
text-align: center;
}
.container {
font-size: 15em;
min-height: 110vh;
}
.cnc {
margin: auto;
width: 350px;
height: 200px;
background: url('http://image.gilawhost.com/16/12/29/9mq5kqgu.png') no-repeat 0 0%;
background-size: auto 100%;
}
h1 {
font-size: 1.2em;
}
p {
width: 60%;
margin: auto;
text-align: left;
}
.p {
margin-top: 120px;
font-size: 14px;
text-align: center;
}<!DOCTYPE html>
<!--
come from the demo de Tom Bennet
http://www.sitepoint.com/responsive-sprite-animations-imagemagick-greensock
-->
<html >
<head>
<meta charset="UTF-8">
<title>Demo 4: Synchronising Playback with the Scrollbar</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
</head>
<body>
<div class="container" id="js-pinned">
<div class="cnc" id="js-animation"></div>
</div>
<p class="p">Demo by Tom Bennet. <a href="http://www.sitepoint.com/responsive-sprite-animations-imagemagick-greensock" target="_blank">See article</a>.</p>
<script src='https://cdnjs.cloudflare.com/ajax/libs/gsap/1.16.1/TweenMax.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.2/ScrollMagic.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.2/plugins/animation.gsap.min.js'></script>
</body>
</html>关于javascript - 使用 ScrollMagic 同步 Sprite 和滚动，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41380994/