<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>offset-rotate interpolation</title>
<link rel="author" title="Eric Willigers" href="mailto:[email protected]">
<link rel="help" href="https://drafts.fxtf.org/motion-1/#offset-rotate-property">
<meta name="assert" content="offset-rotate supports animation.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
</head>
<style>
.parent {
offset-rotate: 30deg;
}
.target {
width: 80px;
height: 80px;
display: inline-block;
background-color: black;
margin-right: 5px;
offset-rotate: 10deg;
}
.expected {
background-color: green;
margin-right: 15px;
}
</style>
<body>
<script>
test_interpolation({
property: 'offset-rotate',
from: '100deg',
to: '180deg',
}, [
{at: -1, expect: '20deg'},
{at: 0, expect: '100deg'},
{at: 0.125, expect: '110deg'},
{at: 0.875, expect: '170deg'},
{at: 1, expect: '180deg'},
{at: 2, expect: '260deg'}
]);
test_interpolation({
property: 'offset-rotate',
from: 'auto 45deg',
to: 'auto 125deg',
}, [
{at: -1, expect: 'auto -35deg'},
{at: 0, expect: 'auto 45deg'},
{at: 0.125, expect: 'auto 55deg'},
{at: 0.875, expect: 'auto 115deg'},
{at: 1, expect: 'auto 125deg'},
{at: 2, expect: 'auto 205deg'}
]);
test_interpolation({
property: 'offset-rotate',
from: 'auto 170deg',
to: '100grad auto',
}, [
{at: -1, expect: 'auto 250deg'},
{at: 0, expect: 'auto 170deg'},
{at: 0.125, expect: 'auto 160deg'},
{at: 0.875, expect: 'auto 100deg'},
{at: 1, expect: '100grad auto'},
{at: 2, expect: 'auto 10deg'}
]);
test_interpolation({
property: 'offset-rotate',
from: 'auto -280deg',
to: 'auto calc(90deg - 0.5turn - 300grad + 0rad)',
}, [
{at: -1, expect: 'auto -200deg'},
{at: 0, expect: 'auto -280deg'},
{at: 0.125, expect: 'auto -290deg'},
{at: 0.875, expect: 'auto -350deg'},
{at: 1, expect: 'auto calc(90deg - 0.5turn - 300grad + 0rad)'},
{at: 2, expect: 'auto -440deg'}
]);
test_interpolation({
property: 'offset-rotate',
from: 'auto 100deg',
to: 'reverse',
}, [
{at: -1, expect: 'auto 20deg'},
{at: 0, expect: 'auto 100deg'},
{at: 0.125, expect: 'auto 110deg'},
{at: 0.875, expect: 'auto 170deg'},
{at: 1, expect: 'reverse'},
{at: 2, expect: 'auto 260deg'}
]);
// No interpolation between auto/reverse and angle.
test_no_interpolation({
property: 'offset-rotate',
from: 'reverse 90deg',
to: '360deg',
});
test_no_interpolation({
property: 'offset-rotate',
from: '6rad',
to: 'auto',
});
// Neutral keyframes use the inline style.
test_interpolation({
property: 'offset-rotate',
from: neutralKeyframe,
to: '20deg',
}, [
{at: -0.3, expect: '7deg'},
{at: 0, expect: '10deg'},
{at: 0.3, expect: '13deg'},
{at: 0.6, expect: '16deg'},
{at: 1, expect: '20deg'},
{at: 1.5, expect: '25deg'},
]);
// No interpolation to an angle from the initial value 'auto'.
test_no_interpolation({
property: 'offset-rotate',
from: 'initial',
to: '20deg',
});
// 'inherit' keyframes use the parent style.
test_interpolation({
property: 'offset-rotate',
from: 'inherit',
to: '20deg',
}, [
{at: -0.3, expect: '33deg'},
{at: 0, expect: '30deg'},
{at: 0.3, expect: '27deg'},
{at: 0.6, expect: '24deg'},
{at: 1, expect: '20deg'},
{at: 1.5, expect: '15deg'},
]);
// No interpolation to an angle from the initial value 'auto'.
test_no_interpolation({
property: 'offset-rotate',
from: 'unset',
to: '20deg',
});
// Interpolation between angles.
test_interpolation({
property: 'offset-rotate',
from: '10deg',
to: '50deg'
}, [
{at: -0.3, expect: '-2deg'},
{at: 0, expect: '10deg'},
{at: 0.3, expect: '22deg'},
{at: 0.6, expect: '34deg'},
{at: 1, expect: '50deg'},
{at: 1.5, expect: '70deg'},
]);
// Interpolation between auto angles.
test_interpolation({
property: 'offset-rotate',
from: 'auto 10deg',
to: 'auto 50deg'
}, [
{at: -0.3, expect: 'auto -2deg'},
{at: 0, expect: 'auto 10deg'},
{at: 0.3, expect: 'auto 22deg'},
{at: 0.6, expect: 'auto 34deg'},
{at: 1, expect: 'auto 50deg'},
{at: 1.5, expect: 'auto 70deg'},
]);
// 'reverse' is like 'auto 180deg'.
test_interpolation({
property: 'offset-rotate',
from: 'reverse -170deg',
to: 'reverse -130deg'
}, [
{at: -0.3, expect: 'auto -2deg'},
{at: 0, expect: 'auto 10deg'},
{at: 0.3, expect: 'auto 22deg'},
{at: 0.6, expect: 'auto 34deg'},
{at: 1, expect: 'auto 50deg'},
{at: 1.5, expect: 'auto 70deg'},
]);
// Interpolation between 'auto' and 'reverse'.
test_interpolation({
property: 'offset-rotate',
from: 'auto 10deg',
to: 'reverse -130deg'
}, [
{at: -0.3, expect: 'auto -2deg'},
{at: 0, expect: 'auto 10deg'},
{at: 0.3, expect: 'auto 22deg'},
{at: 0.6, expect: 'auto 34deg'},
{at: 1, expect: 'auto 50deg'},
{at: 1.5, expect: 'auto 70deg'},
]);
test_interpolation({
property: 'offset-rotate',
from: 'reverse -170deg',
to: 'auto 50deg'
}, [
{at: -0.3, expect: 'auto -2deg'},
{at: 0, expect: 'auto 10deg'},
{at: 0.3, expect: 'auto 22deg'},
{at: 0.6, expect: 'auto 34deg'},
{at: 1, expect: 'auto 50deg'},
{at: 1.5, expect: 'auto 70deg'},
]);
// No interpolation between auto/reverse and angle.
test_no_interpolation({
property: 'offset-rotate',
from: 'auto 200deg',
to: '300deg'
});
test_no_interpolation({
property: 'offset-rotate',
from: '300deg',
to: 'reverse 20deg'
});
</script>
</body>
</html>
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