mirror of https://github.com/CesiumGS/cesium.git
102 lines
3.3 KiB
HTML
102 lines
3.3 KiB
HTML
<!doctype html>
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<html lang="en">
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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
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name="viewport"
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content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"
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/>
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<meta name="description" content="Apply simple color-to-alpha on imagery layers." />
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<meta name="cesium-sandcastle-labels" content="Beginner, Tutorials" />
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<title>Cesium Demo</title>
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<script type="text/javascript" src="../Sandcastle-header.js"></script>
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<script
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type="text/javascript"
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src="../../../Build/CesiumUnminified/Cesium.js"
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nomodule
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></script>
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<script type="module" src="../load-cesium-es6.js"></script>
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</head>
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<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
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<style>
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@import url(../templates/bucket.css);
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#toolbar {
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background: rgba(42, 42, 42, 0.8);
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padding: 4px;
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border-radius: 4px;
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}
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</style>
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<div id="cesiumContainer" class="fullSize"></div>
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<div id="loadingOverlay"><h1>Loading...</h1></div>
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<div id="toolbar">
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<table>
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<tbody>
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<tr>
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<td>Threshold</td>
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<td>
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<input
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type="range"
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min="0.0"
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max="1.0"
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step="0.01"
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data-bind="value: threshold, valueUpdate: 'input'"
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/>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<script id="cesium_sandcastle_script">
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window.startup = async function (Cesium) {
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"use strict";
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//Sandcastle_Begin
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const viewer = new Cesium.Viewer("cesiumContainer", {
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geocoder: Cesium.IonGeocodeProviderType.BING,
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});
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const layers = viewer.scene.imageryLayers;
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// Set oceans on Bing base layer to transparent
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const baseLayer = layers.get(0);
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baseLayer.colorToAlpha = new Cesium.Color(0.0, 0.016, 0.059);
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baseLayer.colorToAlphaThreshold = 0.2;
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// Add a bump layer with adjustable threshold
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const singleTileLayer = Cesium.ImageryLayer.fromProviderAsync(
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Cesium.SingleTileImageryProvider.fromUrl("../images/earthbump1k.jpg", {
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rectangle: Cesium.Rectangle.fromDegrees(-180.0, -90.0, 180.0, 90.0),
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}),
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);
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layers.add(singleTileLayer);
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singleTileLayer.colorToAlpha = new Cesium.Color(0.0, 0.0, 0.0, 1.0);
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singleTileLayer.colorToAlphaThreshold = 0.1;
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const viewModel = {
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threshold: singleTileLayer.colorToAlphaThreshold,
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};
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Cesium.knockout.track(viewModel);
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const toolbar = document.getElementById("toolbar");
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Cesium.knockout.applyBindings(viewModel, toolbar);
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Cesium.knockout
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.getObservable(viewModel, "threshold")
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.subscribe(function (newValue) {
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singleTileLayer.colorToAlphaThreshold = parseFloat(viewModel.threshold);
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}); //Sandcastle_End
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};
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if (typeof Cesium !== "undefined") {
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window.startupCalled = true;
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window.startup(Cesium).catch((error) => {
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"use strict";
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console.error(error);
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});
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Sandcastle.finishedLoading();
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}
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</script>
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</body>
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</html>
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