2020-04-24 19:06:19 +00:00
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>SkottieKit Demo</title>
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<script type="text/javascript" src="/bin/skottiekit.js"></script>
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<script type="text/javascript" charset="utf-8">
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const bootTime = performance.now();
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const cdn = 'https://storage.googleapis.com/skia-cdn/misc/';
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// loadKit resolves with SkottieKit.
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const loadKit = SkottieKitInit({
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locateFile: (file) => '/bin/'+file,
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2020-05-21 14:51:35 +00:00
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});
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2020-04-24 19:06:19 +00:00
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loadKit.then(() => {
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const n = performance.now();
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console.log(`loaded Kit in ${(n - bootTime).toFixed(2)} ms`)
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});
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const loadLegoJSON = fetch(cdn + 'lego_loader.json').then((resp) => {
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return resp.text();
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});
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const loadPartyJSON = fetch(cdn + 'confetti.json').then((resp) => {
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return resp.text();
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});
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const loadDrinksJSON = fetch(cdn + 'drinks.json').then((resp) => {
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return resp.text();
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});
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const loadOnboardingJSON = fetch(cdn + 'onboarding.json').then((resp) => {
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return resp.text();
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});
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function SkottieDemo(values, canvasID, width=400, height=400) {
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const [SkottieKit, legoJSON] = values;
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const animation = SkottieKit.MakeManagedAnimation(legoJSON);
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const duration = animation.duration() * 1000;
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const size = animation.size();
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const bounds = {fLeft: 0, fTop: 0, fRight: width, fBottom: height};
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const surface = SkottieKit.MakeCanvasSurface(canvasID);
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if (!surface) {
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console.error('Could not make surface');
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return;
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}
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const firstFrame = Date.now();
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const clearColor = SkottieKit.WHITE;
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function drawFrame(canvas) {
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const seek = ((Date.now() - firstFrame) / duration) % 1.0;
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const damage = animation.seek(seek);
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if (damage.fRight > damage.fLeft && damage.fBottom > damage.fTop) {
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canvas.clear(clearColor);
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animation.render(canvas, bounds);
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}
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surface.requestAnimationFrame(drawFrame);
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}
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surface.requestAnimationFrame(drawFrame);
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}
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const legosAnimating = Promise.all([loadKit, loadLegoJSON]).then((values) => {
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SkottieDemo(values, 'legos', 400, 400);
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});
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const partyAnimating = Promise.all([loadKit, loadPartyJSON]).then((values) => {
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SkottieDemo(values, 'party', 400, 400);
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});
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const drinksAnimating = Promise.all([loadKit, loadDrinksJSON]).then((values) => {
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SkottieDemo(values, 'drinks', 400, 400);
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});
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const onboardingAnimating = Promise.all([loadKit, loadOnboardingJSON]).then((values) => {
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SkottieDemo(values, 'onboarding', 400, 400);
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});
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Promise.all([legosAnimating, partyAnimating, drinksAnimating, onboardingAnimating]).then(() => {
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const frames = new Float64Array(100);
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let idx = 0;
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let now = performance.now();
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function benchFrame() {
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frames[idx] = performance.now() - now;
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idx++;
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if (idx < frames.length) {
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now = performance.now();
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window.requestAnimationFrame(benchFrame);
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} else {
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let out = '';
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for (const frameTime of frames) {
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out += frameTime.toFixed(2);
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out += '\n';
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}
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console.log(out);
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}
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}
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window.requestAnimationFrame(benchFrame);
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})
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</script>
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<style>
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canvas {
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border: 1px dashed #AAA;
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width: 400px;
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height: 400px;
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}
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</style>
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</head>
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<body>
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<h1> SkottieKit</h1>
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<canvas id=legos width=400 height=400></canvas>
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<canvas id=party width=400 height=400></canvas>
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<canvas id=drinks width=400 height=400></canvas>
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<canvas id=onboarding width=400 height=400></canvas>
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</body>
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</html>
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