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<html class="reftest-wait">
<title>Worklet Animation sets keyframes</title>
<link rel="help" href="https://drafts.css-houdini.org/css-animationworklet/">
<meta name="assert" content="Can update the keyframes for an effect while the animation is running">
<link rel="match" href="references/translated-box-ref.html">
<script src="/web-animations/testcommon.js"></script>
<script src="/common/reftest-wait.js"></script>
<script src="common.js"></script>
<style>
#box {
width: 100px;
height: 100px;
background-color: green;
}
</style>
<div id="box"></div>
<script>
registerConstantLocalTimeAnimator(500).then(()=>{
const keyframes_before = [
{ transform: 'translateX(0)' },
{ transform: 'translateX(200px)' }
];
const keyframes_after = [
{ transform: 'translateY(0)' },
{ transform: 'translateY(200px)' }
];
const box = document.getElementById('box');
const effect = new KeyframeEffect(box, keyframes_before, {duration: 1000});
const animation = new WorkletAnimation('constant_time', effect);
animation.play();
waitForAsyncAnimationFrames(1).then(_ => {
effect.setKeyframes(keyframes_after);
waitForAsyncAnimationFrames(1).then(_ => {
takeScreenshot();
});
});
});
</script>
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