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<!DOCTYPE html>
<title>clip composition</title>
<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#clip-property">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<body>
<script>
test_composition({
property: 'clip',
underlying: 'rect(0px 10px 20px 30px)',
addFrom: 'rect(40px 50px 60px 70px)',
addTo: 'rect(140px 150px 160px 170px)',
}, [
{at: -1, expect: 'rect(-60px -40px -20px 0px)'},
{at: 0, expect: 'rect(40px 60px 80px 100px)'},
{at: 0.25, expect: 'rect(65px 85px 105px 125px)'},
{at: 0.75, expect: 'rect(115px 135px 155px 175px)'},
{at: 1, expect: 'rect(140px 160px 180px 200px)'},
{at: 2, expect: 'rect(240px 260px 280px 300px)'},
]);
test_composition({
property: 'clip',
underlying: 'auto',
addFrom: 'rect(0px 0px 0px 0px)',
addTo: 'rect(100px 100px 100px 100px)',
}, [
{at: -1, expect: 'rect(-100px -100px -100px -100px)'},
{at: 0, expect: 'rect(0px 0px 0px 0px)'},
{at: 0.25, expect: 'rect(25px 25px 25px 25px)'},
{at: 0.75, expect: 'rect(75px 75px 75px 75px)'},
{at: 1, expect: 'rect(100px 100px 100px 100px)'},
{at: 2, expect: 'rect(200px 200px 200px 200px)'},
]);
test_composition({
property: 'clip',
underlying: 'rect(50px auto auto 50px)',
addFrom: 'rect(50px auto auto 50px)',
addTo: 'rect(100px 100px 100px 100px)',
}, [
{at: -1, expect: 'rect(100px auto auto 100px)'},
{at: 0, expect: 'rect(100px auto auto 100px)'},
{at: 0.25, expect: 'rect(100px auto auto 100px)'},
{at: 0.75, expect: 'rect(100px 100px 100px 100px)'},
{at: 1, expect: 'rect(100px 100px 100px 100px)'},
{at: 2, expect: 'rect(100px 100px 100px 100px)'},
]);
test_composition({
property: 'clip',
underlying: 'rect(50px 50px 50px 50px)',
addFrom: 'rect(50px auto auto 50px)',
addTo: 'rect(100px auto auto 100px)',
}, [
{at: -1, expect: 'rect(0px auto auto 0px)'},
{at: 0, expect: 'rect(50px auto auto 50px)'},
{at: 0.25, expect: 'rect(62.5px auto auto 62.5px)'},
{at: 0.75, expect: 'rect(87.5px auto auto 87.5px)'},
{at: 1, expect: 'rect(100px auto auto 100px)'},
{at: 2, expect: 'rect(150px auto auto 150px)'},
]);
test_composition({
property: 'clip',
underlying: 'rect(50px auto auto 50px)',
addFrom: 'rect(50px 50px 50px 50px)',
replaceTo: 'rect(100px auto auto 100px)',
}, [
{at: -1, expect: 'rect(50px 50px 50px 50px)'},
{at: 0, expect: 'rect(50px 50px 50px 50px)'},
{at: 0.25, expect: 'rect(50px 50px 50px 50px)'},
{at: 0.75, expect: 'rect(100px auto auto 100px)'},
{at: 1, expect: 'rect(100px auto auto 100px)'},
{at: 2, expect: 'rect(100px auto auto 100px)'},
]);
test_composition({
property: 'clip',
underlying: 'rect(50px 50px 50px 50px)',
addFrom: 'rect(50px auto auto 50px)',
addTo: 'auto',
}, [
{at: -1, expect: 'rect(50px auto auto 50px)'},
{at: 0, expect: 'rect(50px auto auto 50px)'},
{at: 0.25, expect: 'rect(50px auto auto 50px)'},
{at: 0.75, expect: 'auto'},
{at: 1, expect: 'auto'},
{at: 2, expect: 'auto'},
]);
</script>
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