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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)
```
91 lines
1.7 KiB
HTML
91 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 / pause tween</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>14 _ pause tween</h2>
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<br />
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<p>
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<button type="button" onclick="pause()">Pause</button>
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, then
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<button type="button" onclick="resume()">Resume</button>.
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</p>
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</div>
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<div
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id="progress_bar_wrapper"
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style="
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position: absolute;
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top: 300px;
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left: 100px;
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width: 500px;
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height: 100px;
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border: 0.5em solid black;
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overflow: hidden;
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"
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>
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<div
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id="progress_bar_fill"
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style="
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position: absolute;
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top: 0px;
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left: 0px;
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width: 0%;
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height: 100%;
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background: #a0dde9;
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line-height: 6em;
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text-align: center;
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"
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>
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0%
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</div>
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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 progress
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var fill
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var tween1
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init()
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animate()
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function init() {
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progress = {width: 0}
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fill = document.getElementById('progress_bar_fill')
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tween1 = new TWEEN.Tween(progress)
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.to({width: 100}, 2000)
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.onUpdate(update1)
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.yoyo(true)
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.repeat(Infinity)
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.delay(500)
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.start()
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}
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function animate(time) {
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requestAnimationFrame(animate)
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TWEEN.update(time)
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}
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function update1() {
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fill.style.width = progress.width + '%'
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fill.innerHTML = Math.floor(progress.width) + '%'
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}
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function pause() {
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tween1.pause()
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}
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function resume() {
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tween1.resume()
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}
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</script>
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</body>
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</html>
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