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df8214619f
relative values feature (`start('+500')`) and make it use `.delay(500)`
instead, and avoid using negative values for delaye (`.delay(-500)`) in
the 13_relative_start_time example because it may not be intuitive and
plus that feature broke with the previous merge that fixed more
important timing issues (especially with unfocused browser tabs)
BREAKING: If you are using negative values for delay, f.e.
`tween.delay(-500)`, instead manage the time values passed to your
tweens manually. For example:
```js
tweenOffset = 500
const tween = new Tween(...)
tween.start(currentTime)
tween.update(currentTime + tweenOffset) // advance it immediate immediately, as if it already started earlier
// in the update loop
tween.update(newCurrentTime + tweenOffset)
```
73 lines
1.7 KiB
HTML
73 lines
1.7 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<title>Tween.js / complex properties</title>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<link href="css/style.css" media="screen" rel="stylesheet" type="text/css" />
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</head>
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<body>
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<div id="info">
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<h1><a href="http://github.com/tweenjs/tween.js">tween.js</a></h1>
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<h2>15 _ complex properties</h2>
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<p>Simple example for illustrating animation of nested properties.</p>
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</div>
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<div
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id="target"
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style="
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position: absolute;
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transform: translate(100px, 100px);
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width: 100px;
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height: 100px;
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background: #a0dde9;
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padding: 1em;
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"
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>
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hello world!
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</div>
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<script src="../dist/tween.umd.js"></script>
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<script>
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var position
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var target
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var tween, tweenBack
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init()
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animate()
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function init() {
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position = {x: 100, y: 100, styles: {opacity: 1.0}}
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target = document.getElementById('target')
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tween = new TWEEN.Tween(position)
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.to({x: 700, y: 200, styles: {opacity: 0}}, 1000)
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.delay(1000)
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.onUpdate(update)
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tweenBack = new TWEEN.Tween(position)
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.to({x: 100, y: 100, styles: {opacity: 1.0}}, 1000)
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.onUpdate(update)
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tween.chain(tweenBack)
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tweenBack.chain(tween)
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tween.start()
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}
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//If we register the callback animate, but the TWEEN.update(time) returns false,
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//cancel/unregister the handler
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function animate(time) {
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var id = requestAnimationFrame(animate)
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var result = TWEEN.update(time)
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if (!result) cancelAnimationFrame(id)
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}
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function update(values) {
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target.style.opacity = values.styles.opacity
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target.style.transform = `translate(${values.x}px, ${values.y}px)`
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}
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</script>
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</body>
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</html>
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