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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>offset-distance interpolation</title>
<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
<link rel="help" href="https://drafts.fxtf.org/motion-1/#offset-distance-property">
<meta name="assert" content="offset-distance supports animation.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/interpolation-testcommon.js"></script>
</head>
<body>
<script>
'use strict';
test_no_interpolation({
property: 'offset-path',
from: "path('M 0 0 L 100 100 M 100 200 L 200 200 Z L 200 100 Z')",
to: "ray(0deg closest-side)",
});
test_no_interpolation({
property: 'offset-path',
from: "ray(0deg closest-corner)",
to: "none",
});
// No interpolation to a ray from the initial value 'none'.
test_no_interpolation({
property: 'offset-path',
from: 'none',
to: 'ray(20deg closest-side)',
});
// Interpolation between rays.
test_interpolation({
property: 'offset-path',
from: 'ray(10deg sides contain)',
to: 'ray(50deg sides contain)'
}, [
{at: -1, expect: 'ray(-30deg sides contain)'},
{at: 0, expect: 'ray(10deg sides contain)'},
{at: 0.125, expect: 'ray(15deg sides contain)'},
{at: 0.875, expect: 'ray(45deg sides contain)'},
{at: 1, expect: 'ray(50deg sides contain)'},
{at: 2, expect: 'ray(90deg sides contain)'},
]);
test_interpolation({
property: 'offset-path',
from: 'ray(-10deg farthest-corner)',
to: 'ray(-50deg farthest-corner)'
}, [
{at: -1, expect: 'ray(30deg farthest-corner)'},
{at: 0, expect: 'ray(-10deg farthest-corner)'},
{at: 0.125, expect: 'ray(-15deg farthest-corner)'},
{at: 0.875, expect: 'ray(-45deg farthest-corner)'},
{at: 1, expect: 'ray(-50deg farthest-corner)'},
{at: 2, expect: 'ray(-90deg farthest-corner)'},
]);
// No interpolation between different sizes and/or different containment.
test_no_interpolation({
property: 'offset-path',
from: 'ray(200deg farthest-side)',
to: 'ray(300deg sides)'
});
test_no_interpolation({
property: 'offset-path',
from: 'ray(200deg sides contain)',
to: 'ray(300deg sides)'
});
test_no_interpolation({
property: 'offset-path',
from: 'ray(200deg farthest-side contain)',
to: 'ray(300deg sides)'
});
</script>
</body>
</html>
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