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<!DOCTYPE html>
<meta charset="UTF-8">
<title>transform interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-transforms/#transform-property">
<meta name="assert" content="transform supports animation as a transform list">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.target {
color: white;
width: 100px;
height: 100px;
background-color: black;
display: inline-block;
overflow: hidden;
}
.expected {
background-color: green;
}
.target > div {
width: 10px;
height: 10px;
display: inline-block;
background: orange;
margin: 1px;
}
.test {
overflow: hidden;
}
</style>
<body>
<template id="target-template">
<div></div>
</template>
</body>
<script>
test_interpolation({
property: 'transform',
from: 'skewX(10rad) scaleZ(1)',
to: 'skewX(20rad) scaleZ(2)'
}, [
{at: -1, expect: 'skewX(0rad) scaleZ(0)'},
{at: 0, expect: 'skewX(10rad) scaleZ(1)'},
{at: 0.25, expect: 'skewX(12.5rad) scaleZ(1.25)'},
{at: 0.75, expect: 'skewX(17.5rad) scaleZ(1.75)'},
{at: 1, expect: 'skewX(20rad) scaleZ(2)'},
{at: 2, expect: 'skewX(30rad) scaleZ(3)'},
]);
test_interpolation({
property: 'transform',
from: 'skewX(10rad)',
to: 'skewX(20rad) scaleZ(2)'
}, [
{at: -1, expect: 'skewX(0rad) scaleZ(0)'},
{at: 0, expect: 'skewX(10rad) scaleZ(1)'},
{at: 0.25, expect: 'skewX(12.5rad) scaleZ(1.25)'},
{at: 0.75, expect: 'skewX(17.5rad) scaleZ(1.75)'},
{at: 1, expect: 'skewX(20rad) scaleZ(2)'},
{at: 2, expect: 'skewX(30rad) scaleZ(3)'},
]);
test_interpolation({
property: 'transform',
from: 'scaleZ(3) perspective(400px)',
to: 'scaleZ(4) skewX(1rad) perspective(500px)'
}, [
{at: -1, expect: 'scaleZ(2) matrix3d(1, 0, 0, 0, -1.55741, 1, 0, 0, 0, 0, 1, -0.003, 0, 0, 0, 1)'},
{at: 0, expect: 'scaleZ(3) matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, -0.0025, 0, 0, 0, 1)'},
{at: 0.25, expect: 'scaleZ(3.25) matrix3d(1, 0, 0, 0, 0.389352, 1, 0, 0, 0, 0, 1, -0.002375, 0, 0, 0, 1)'},
{at: 0.75, expect: 'scaleZ(3.75) matrix3d(1, 0, 0, 0, 1.16806, 1, 0, 0, 0, 0, 1, -0.002125, 0, 0, 0, 1)'},
{at: 1, expect: 'scaleZ(4) matrix3d(1, 0, 0, 0, 1.55741, 1, 0, 0, 0, 0, 1, -0.002, 0, 0, 0, 1)'},
{at: 2, expect: 'scaleZ(5) matrix3d(1, 0, 0, 0, 3.11482, 1, 0, 0, 0, 0, 1, -0.0015, 0, 0, 0, 1)'},
]);
test_interpolation({
property: 'transform',
from: 'translateY(70%) scaleZ(1)',
to: 'translateY(90%) scaleZ(2)'
}, [
{at: -1, expect: 'translateY(50%) scaleZ(0)'},
{at: 0, expect: 'translateY(70%) scaleZ(1)'},
{at: 0.25, expect: 'translateY(75%) scaleZ(1.25)'},
{at: 0.75, expect: 'translateY(85%) scaleZ(1.75)'},
{at: 1, expect: 'translateY(90%) scaleZ(2)'},
{at: 2, expect: 'translateY(110%) scaleZ(3)'},
]);
test_interpolation({
property: 'transform',
from: 'translateY(70%)',
to: 'translateY(90%) scaleZ(2)'
}, [
{at: -1, expect: 'translateY(50%) scaleZ(0)'},
{at: 0, expect: 'translateY(70%)'},
{at: 0.25, expect: 'translateY(75%) scaleZ(1.25)'},
{at: 0.75, expect: 'translateY(85%) scaleZ(1.75)'},
{at: 1, expect: 'translateY(90%) scaleZ(2)'},
{at: 2, expect: 'translateY(110%) scaleZ(3)'},
]);
// Skew
test_interpolation({
property: 'transform',
from: 'skewX(10rad)',
to: 'skewX(20rad)'
}, [
{at: -1, expect: 'skewX(0rad)'},
{at: 0, expect: 'skewX(10rad)'},
{at: 0.25, expect: 'skewX(12.5rad)'},
{at: 0.75, expect: 'skewX(17.5rad)'},
{at: 1, expect: 'skewX(20rad)'},
{at: 2, expect: 'skewX(30rad)'},
]);
test_interpolation({
property: 'transform',
from: 'skewY(10rad)',
to: 'skewY(20rad)'
}, [
{at: -1, expect: 'skewY(0rad)'},
{at: 0, expect: 'skewY(10rad)'},
{at: 0.25, expect: 'skewY(12.5rad)'},
{at: 0.75, expect: 'skewY(17.5rad)'},
{at: 1, expect: 'skewY(20rad)'},
{at: 2, expect: 'skewY(30rad)'},
]);
</script>
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