2019-03-21 09:57:27 +01:00
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<!doctype html>
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>DeepZoomImage Doctests</title>
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<link rel="stylesheet" href="../../3rdparty/highlight/styles/default.css">
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<link rel="stylesheet" href="../../../css/doctest.css">
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<script src="../../3rdparty/highlight/highlight.pack.js"></script>
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2019-05-22 16:03:19 +02:00
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<script src="../../../dist/iwmlib.3rdparty.js"></script>
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2019-03-28 09:37:30 +01:00
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<script src="../../../node_modules/jquery/dist/jquery.min.js"></script>
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2019-03-21 09:57:27 +01:00
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<script src="../../all.js"></script>
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<script src="../all.js"></script>
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<style>
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#app {
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display: table;
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margin: 0 auto;
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}
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#app > * {
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margin-bottom: 5px;
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}
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</style>
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</head>
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<body onload="Doctest.run()">
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<h1>DeepZoomImage</h1>
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<p>
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The main class of a deeply zoomable image that is represented by a hierarchy of tile layers for each zoom level. This gives
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the user the impression that even huge pictures (up to gigapixel-images) can be zoomed instantaneously, since the
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tiles at smaller levels are scaled immediately and overloaded by more detailed tiles at the larger level as fast
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as possible.
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</p>
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<br />
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<div id="app">
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<button id="change_dpr">Change Pixel Ratio</button>
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<div id="canvas_container"></div>
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<div id="info"></div>
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</div>
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<script class="doctest">
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// When an element is added, the ScatterApp wrapps it in it's own Scatter Container.
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// Just as in the doctest: scatter.html
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class ScatterApp extends PIXIApp {
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sceneFactory() {
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return new ScatterContainer(this.renderer, { showBounds: true, app: this })
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}
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}
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let app
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let state = 0
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//Destroys the PIXIApp element and the corresponding canvas,
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//to reinstantiate the entire application.
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changePIXI()
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function changePIXI() {
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if (typeof app != 'undefined') {
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//The parameter destroys the canvas, when destroying the app.
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// Not deleting a new canvas resulted in some
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// weird PIXI error.
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app.destroy(true)
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}
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//A new canvas has to be created
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//for the new view.
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var canvas = document.createElement("canvas")
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canvas_container.appendChild(canvas);
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app = new ScatterApp({
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resolution: state + 1,
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//Default parameters
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view: canvas,
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autoResize: false,
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width: 128,
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height: 128,
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backgroundColor: 0xFFCCCCCC
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}).setup().run()
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// To create a DeepZoomImage, a DeepZoomInfo has to
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// be provided. It contains all the necessary informations
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// for the DeepZoomImage, to behave as intended.
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// (E.g. that it displays the right level of tiles for the current view distance.)
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deepZoomInfo = new DeepZoomInfo(
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{
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"tileSize": 128,
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"format": "jpg",
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"overlap": 0,
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"type": "map",
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"height": 4096,
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"width": 4096,
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"path": "../assets/maps/test",
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"urlTileTemplate": "{path}/{level}/{column}/{row}.{format}"
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});
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// Create the DeepZoomImage
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deepZoomImage = new DeepZoomImage(deepZoomInfo, {
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highResolution: !!state,
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app
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});
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deepZoomImage.scatter = new DisplayObjectScatter(deepZoomImage, app.renderer, {
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// Allow more flexible scaling for debugging purposes.
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minScale: 0,
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maxScale: 100,
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// Notify the DeepZoomImage, when it's container has
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// been transformed (translated, scaled, rotated, ...)
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onTransform: (event) => {
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deepZoomImage.transformed(event)
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}
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});
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// Add the DeepZoomImage to the scene.
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app.scene.addChild(deepZoomImage)
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//Set info text.
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info.innerHTML = "resolution: " + app._options.resolution +
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"<br>high resolution: " + !!state;
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}
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// Add functionality to the button.
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change_dpr.addEventListener("click", (event) => {
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state = (state + 1) % 2
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changePIXI()
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})
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</script>
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</body>
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</html>
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