perspective-origin-interpolation.html

<!DOCTYPE html>
<meta charset="UTF-8">
<style>
.parent {
  perspective-origin: 30px 10px;
}
.target {
  display: inline-block;
  -webkit-perspective: 50;
  perspective: 50;
  margin-top: 50px;
  margin-bottom: 25px;
  perspective-origin: 10px 30px;
}
.transformed {
  width: 50px;
  height: 50px;
  background: black;
  transform: rotateY(45deg);
}
.expected .transformed {
  background: green;
}
.expected {
  position: relative;
  left: -50px;
  opacity: 0.75;
}
</style>
<body>
<template id="target-template">
<div><div class="transformed"></div></div>
</template>
<script src="resources/interpolation-test.js"></script>
<script>
// Regression test for https://crbug.com/984700
assertInterpolation({
  property: 'perspective-origin',
  from: '20% 25%',
  to: '40% 50%',
}, [
  {at: 3.40282e+38, is: '3.35544e+07px 3.35544e+07px'}
]);
</script>
</body>

chromium/third_party/blink/web_tests/animations/interpolation/perspective-origin-interpolation.html