Index: third_party/WebKit/LayoutTests/imported/web-platform-tests/web-animations/keyframe-effect/effect-easing.html |
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+<!DOCTYPE html> |
+<meta charset=utf-8> |
+<title>Effect-level easing tests</title> |
+<link rel="help" href="http://w3c.github.io/web-animations/#calculating-the-transformed-time"> |
+<link rel="author" title="Hiroyuki Ikezoe" href="mailto:hiikezoe@mozilla-japan.org"> |
+<script src="../../../../resources/testharness.js"></script> |
+<script src="../../../../resources/testharnessreport.js"></script> |
+<script src="../testcommon.js"></script> |
+<body> |
+<div id="log"></div> |
+<div id="target"></div> |
+<script> |
+"use strict"; |
+ |
+function assert_style_left_at(animation, time, easingFunction) { |
+ animation.currentTime = time; |
+ var portion = time / animation.effect.timing.duration; |
+ assert_approx_equals(pxToNum(getComputedStyle(animation.effect.target).left), |
+ easingFunction(portion) * 100, |
+ 0.01, |
+ 'The left of the animation should be approximately ' + |
+ easingFunction(portion) * 100 + ' at ' + time + 'ms'); |
+} |
+ |
+var gEffectEasingTests = [ |
+ { |
+ desc: 'steps(start) function', |
+ easing: 'steps(2, start)', |
+ easingFunction: stepStart(2) |
+ }, |
+ { |
+ desc: 'steps(end) function', |
+ easing: 'steps(2, end)', |
+ easingFunction: stepEnd(2) |
+ }, |
+ { |
+ desc: 'linear function', |
+ easing: 'linear', // cubic-bezier(0, 0, 1.0, 1.0) |
+ easingFunction: cubicBezier(0, 0, 1.0, 1.0) |
+ }, |
+ { |
+ desc: 'ease function', |
+ easing: 'ease', // cubic-bezier(0.25, 0.1, 0.25, 1.0) |
+ easingFunction: cubicBezier(0.25, 0.1, 0.25, 1.0) |
+ }, |
+ { |
+ desc: 'ease-in function', |
+ easing: 'ease-in', // cubic-bezier(0.42, 0, 1.0, 1.0) |
+ easingFunction: cubicBezier(0.42, 0, 1.0, 1.0) |
+ }, |
+ { |
+ desc: 'ease-in-out function', |
+ easing: 'ease-in-out', // cubic-bezier(0.42, 0, 0.58, 1.0) |
+ easingFunction: cubicBezier(0.42, 0, 0.58, 1.0) |
+ }, |
+ { |
+ desc: 'ease-out function', |
+ easing: 'ease-out', // cubic-bezier(0, 0, 0.58, 1.0) |
+ easingFunction: cubicBezier(0, 0, 0.58, 1.0) |
+ }, |
+ { |
+ desc: 'easing function which produces values greater than 1', |
+ easing: 'cubic-bezier(0, 1.5, 1, 1.5)', |
+ easingFunction: cubicBezier(0, 1.5, 1, 1.5) |
+ }, |
+ { |
+ desc: 'easing function which produces negative values', |
+ easing: 'cubic-bezier(0, -0.5 ,1, -0.5)', |
+ easingFunction: cubicBezier(0, -0.5, 1, -0.5) |
+ }, |
+]; |
+ |
+gEffectEasingTests.forEach(function(options) { |
+ test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate([ { left: '0px' }, { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: options.easing }); |
+ var easing = options.easingFunction; |
+ |
+ anim.pause(); |
+ |
+ assert_style_left_at(anim, 0, easing); |
+ assert_style_left_at(anim, 250, easing); |
+ assert_style_left_at(anim, 500, easing); |
+ assert_style_left_at(anim, 750, easing); |
+ assert_style_left_at(anim, 1000, easing); |
+ }, options.desc); |
+}); |
+ |
+var gEffectEasingTestsWithKeyframeEasing = [ |
+ { |
+ desc: 'effect easing produces values greater than 1 with keyframe ' + |
+ 'easing cubic-bezier(0, 0, 0, 0)', |
+ easing: 'cubic-bezier(0, 1.5, 1, 1.5)', |
+ keyframeEasing: 'cubic-bezier(0, 0, 0, 0)', // linear |
+ easingFunction: cubicBezier(0, 1.5, 1, 1.5) |
+ }, |
+ { |
+ desc: 'effect easing produces values greater than 1 with keyframe ' + |
+ 'easing cubic-bezier(1, 1, 1, 1)', |
+ easing: 'cubic-bezier(0, 1.5, 1, 1.5)', |
+ keyframeEasing: 'cubic-bezier(1, 1, 1, 1)', // linear |
+ easingFunction: cubicBezier(0, 1.5, 1, 1.5) |
+ }, |
+ { |
+ desc: 'effect easing produces negative values 1 with keyframe ' + |
+ 'easing cubic-bezier(0, 0, 0, 0)', |
+ easing: 'cubic-bezier(0, -0.5, 1, -0.5)', |
+ keyframeEasing: 'cubic-bezier(0, 0, 0, 0)', // linear |
+ easingFunction: cubicBezier(0, -0.5, 1, -0.5) |
+ }, |
+ { |
+ desc: 'effect easing produces negative values 1 with keyframe ' + |
+ 'easing cubic-bezier(1, 1, 1, 1)', |
+ easing: 'cubic-bezier(0, -0.5, 1, -0.5)', |
+ keyframeEasing: 'cubic-bezier(1, 1, 1, 1)', // linear |
+ easingFunction: cubicBezier(0, -0.5, 1, -0.5) |
+ }, |
+]; |
+ |
+gEffectEasingTestsWithKeyframeEasing.forEach(function(options) { |
+ test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate( |
+ [ { left: '0px', easing: options.keyframeEasing }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: options.easing }); |
+ var easing = options.easingFunction; |
+ |
+ anim.pause(); |
+ |
+ assert_style_left_at(anim, 0, easing); |
+ assert_style_left_at(anim, 250, easing); |
+ assert_style_left_at(anim, 500, easing); |
+ assert_style_left_at(anim, 750, easing); |
+ assert_style_left_at(anim, 1000, easing); |
+ }, options.desc); |
+}); |
+ |
+// Other test cases that effect easing produces values outside of [0,1]. |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate([ { left: '0px', easing: 'step-start' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, 1.5, 1, 1.5)' }); |
+ anim.pause(); |
+ |
+ // The bezier function produces values greater than 1 in (0.23368794, 1) |
+ anim.currentTime = 0; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+ anim.currentTime = 230; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+ anim.currentTime = 250; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+ anim.currentTime = 1000; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+}, 'effect easing produces values greater than 1 with step-start keyframe'); |
+ |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate([ { left: '0px', easing: 'step-end' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, 1.5, 1, 1.5)' }); |
+ anim.pause(); |
+ |
+ // The bezier function produces values greater than 1 in (0.23368794, 1) |
+ anim.currentTime = 0; |
+ assert_equals(getComputedStyle(target).left, '0px'); |
+ anim.currentTime = 230; |
+ assert_equals(getComputedStyle(target).left, '0px'); |
+ anim.currentTime = 250; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+ anim.currentTime = 1000; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+}, 'effect easing produces values greater than 1 with step-end keyframe'); |
+ |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate([ { left: '0px', easing: 'step-start' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, -0.5, 1, -0.5)' }); |
+ anim.pause(); |
+ |
+ // The bezier function produces negative values in (0, 0.766312060) |
+ anim.currentTime = 0; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+ anim.currentTime = 750; |
+ assert_equals(getComputedStyle(target).left, '0px'); |
+ anim.currentTime = 800; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+ anim.currentTime = 1000; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+}, 'effect easing produces negative values with step-start keyframe'); |
+ |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate([ { left: '0px', easing: 'step-end' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, -0.5, 1, -0.5)' }); |
+ anim.pause(); |
+ |
+ // The bezier function produces negative values in (0, 0.766312060) |
+ anim.currentTime = 0; |
+ assert_equals(getComputedStyle(target).left, '0px'); |
+ anim.currentTime = 750; |
+ assert_equals(getComputedStyle(target).left, '0px'); |
+ anim.currentTime = 800; |
+ assert_equals(getComputedStyle(target).left, '0px'); |
+ anim.currentTime = 1000; |
+ assert_equals(getComputedStyle(target).left, '100px'); |
+}, 'effect easing produces negative values with step-end keyframe'); |
+ |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate( |
+ // http://cubic-bezier.com/#.5,1,.5,0 |
+ [ { left: '0px', easing: 'cubic-bezier(0.5, 1, 0.5, 0)' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, 1.5, 1, 1.5)' }); |
+ var keyframeEasing = function(x) { |
+ assert_greater_than_equal(x, 0.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ assert_less_than_equal(x, 1.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ return cubicBezier(0.5, 1, 0.5, 0)(x); |
+ } |
+ var keyframeEasingExtrapolated = function(x) { |
+ assert_greater_than(x, 1.0, |
+ 'This function should be called in (1.0, infinity) range'); |
+ // p3x + (p2y - p3y) / (p2x - p3x) * (x - p3x) |
+ return 1.0 + (0 - 1) / (0.5 - 1) * (x - 1.0); |
+ } |
+ var effectEasing = function(x) { |
+ return cubicBezier(0, 1.5, 1, 1.5)(x); |
+ } |
+ |
+ anim.pause(); |
+ |
+ // The effect-easing produces values greater than 1 in (0.23368794, 1) |
+ assert_style_left_at(anim, 0, function(x) { |
+ return keyframeEasing(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 230, function(x) { |
+ return keyframeEasing(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 240, function(x) { |
+ return keyframeEasingExtrapolated(effectEasing(x)); |
+ }); |
+ // Near the extreme point of the effect-easing function |
+ assert_style_left_at(anim, 700, function(x) { |
+ return keyframeEasingExtrapolated(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 990, function(x) { |
+ return keyframeEasingExtrapolated(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 1000, function(x) { |
+ return keyframeEasing(effectEasing(x)); |
+ }); |
+}, 'effect easing produces values greater than 1 with keyframe easing ' + |
+ 'producing values greater than 1'); |
+ |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate( |
+ // http://cubic-bezier.com/#0,1.5,1,1.5 |
+ [ { left: '0px', easing: 'cubic-bezier(0, 1.5, 1, 1.5)' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, 1.5, 1, 1.5)' }); |
+ var easing = function(x) { |
+ assert_greater_than_equal(x, 0.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ assert_less_than_equal(x, 1.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ return cubicBezier(0, 1.5, 1, 1.5)(x); |
+ } |
+ var easingExtrapolated = function(x) { |
+ assert_greater_than(x, 1.0, |
+ 'This function should be called in negative range'); |
+ // For cubic-bezier(0, 1.5, 1, 1.5), the tangent at the |
+ // endpoint (x = 1.0) is infinity so we should just return 1.0. |
+ return 1.0; |
+ } |
+ |
+ anim.pause(); |
+ |
+ // The effect-easing produces values greater than 1 in (0.23368794, 1) |
+ assert_style_left_at(anim, 0, function(x) { |
+ return easing(easing(x)) |
+ }); |
+ assert_style_left_at(anim, 230, function(x) { |
+ return easing(easing(x)) |
+ }); |
+ assert_style_left_at(anim, 240, function(x) { |
+ return easingExtrapolated(easing(x)); |
+ }); |
+ // Near the extreme point of the effect-easing function |
+ assert_style_left_at(anim, 700, function(x) { |
+ return easingExtrapolated(easing(x)); |
+ }); |
+ assert_style_left_at(anim, 990, function(x) { |
+ return easingExtrapolated(easing(x)); |
+ }); |
+ assert_style_left_at(anim, 1000, function(x) { |
+ return easing(easing(x)) |
+ }); |
+}, 'effect easing which produces values greater than 1 and the tangent on ' + |
+ 'the upper boundary is infinity with keyframe easing producing values ' + |
+ 'greater than 1'); |
+ |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate( |
+ // http://cubic-bezier.com/#.5,1,.5,0 |
+ [ { left: '0px', easing: 'cubic-bezier(0.5, 1, 0.5, 0)' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, -0.5, 1, -0.5)' }); |
+ var keyframeEasing = function(x) { |
+ assert_greater_than_equal(x, 0.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ assert_less_than_equal(x, 1.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ return cubicBezier(0.5, 1, 0.5, 0)(x); |
+ } |
+ var keyframeEasingExtrapolated = function(x) { |
+ assert_less_than(x, 0.0, |
+ 'This function should be called in negative range'); |
+ // p0x + (p1y - p0y) / (p1x - p0x) * (x - p0x) |
+ return (1 / 0.5) * x; |
+ } |
+ var effectEasing = function(x) { |
+ return cubicBezier(0, -0.5, 1, -0.5)(x); |
+ } |
+ |
+ anim.pause(); |
+ |
+ // The effect-easing produces negative values in (0, 0.766312060) |
+ assert_style_left_at(anim, 0, function(x) { |
+ return keyframeEasing(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 10, function(x) { |
+ return keyframeEasingExtrapolated(effectEasing(x)); |
+ }); |
+ // Near the extreme point of the effect-easing function |
+ assert_style_left_at(anim, 300, function(x) { |
+ return keyframeEasingExtrapolated(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 750, function(x) { |
+ return keyframeEasingExtrapolated(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 770, function(x) { |
+ return keyframeEasing(effectEasing(x)); |
+ }); |
+ assert_style_left_at(anim, 1000, function(x) { |
+ return keyframeEasing(effectEasing(x)); |
+ }); |
+}, 'effect easing produces negative values with keyframe easing ' + |
+ 'producing negative values'); |
+ |
+test(function(t) { |
+ var target = createDiv(t); |
+ target.style.position = 'absolute'; |
+ var anim = target.animate( |
+ // http://cubic-bezier.com/#0,-0.5,1,-0.5 |
+ [ { left: '0px', easing: 'cubic-bezier(0, -0.5, 1, -0.5)' }, |
+ { left: '100px' } ], |
+ { duration: 1000, |
+ fill: 'forwards', |
+ easing: 'cubic-bezier(0, -0.5, 1, -0.5)' }); |
+ var easing = function(x) { |
+ assert_greater_than_equal(x, 0.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ assert_less_than_equal(x, 1.0, |
+ 'This function should be called in [0, 1.0] range'); |
+ return cubicBezier(0, -0.5, 1, -0.5)(x); |
+ } |
+ var easingExtrapolated = function(x) { |
+ assert_less_than(x, 0.0, |
+ 'This function should be called in negative range'); |
+ // For cubic-bezier(0, -0.5, 1, -0.5), the tangent at the |
+ // endpoint (x = 0.0) is infinity so we should just return 0.0. |
+ return 0.0; |
+ } |
+ |
+ anim.pause(); |
+ |
+ // The effect-easing produces negative values in (0, 0.766312060) |
+ assert_style_left_at(anim, 0, function(x) { |
+ return easing(easing(x)) |
+ }); |
+ assert_style_left_at(anim, 10, function(x) { |
+ return easingExtrapolated(easing(x)); |
+ }); |
+ // Near the extreme point of the effect-easing function |
+ assert_style_left_at(anim, 300, function(x) { |
+ return easingExtrapolated(easing(x)); |
+ }); |
+ assert_style_left_at(anim, 750, function(x) { |
+ return easingExtrapolated(easing(x)); |
+ }); |
+ assert_style_left_at(anim, 770, function(x) { |
+ return easing(easing(x)) |
+ }); |
+ assert_style_left_at(anim, 1000, function(x) { |
+ return easing(easing(x)) |
+ }); |
+}, 'effect easing which produces negative values and the tangent on ' + |
+ 'the lower boundary is infinity with keyframe easing producing ' + |
+ 'negative values'); |
+ |
+</script> |
+</body> |