138 lines
4.7 KiB
HTML
138 lines
4.7 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
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name="description"
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content="Load GeoJSON or TopoJSON data and apply custom styling."
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/>
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<meta
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name="cesium-sandcastle-labels"
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content="Showcases, Tutorials, DataSources"
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/>
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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
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class="sandcastle-loading"
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data-sandcastle-bucket="bucket-requirejs.html"
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>
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<style>
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@import url(../templates/bucket.css);
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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"></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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//Example 1: Load with default styling.
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Sandcastle.addDefaultToolbarButton("Default styling", function () {
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viewer.dataSources.add(
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Cesium.GeoJsonDataSource.load(
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"../../SampleData/ne_10m_us_states.topojson"
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)
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);
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});
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//Example 2: Load with basic styling options.
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Sandcastle.addToolbarButton("Basic styling", function () {
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viewer.dataSources.add(
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Cesium.GeoJsonDataSource.load(
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"../../SampleData/ne_10m_us_states.topojson",
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{
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stroke: Cesium.Color.HOTPINK,
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fill: Cesium.Color.PINK.withAlpha(0.5),
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strokeWidth: 3,
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}
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)
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);
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});
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//Example 3: Apply custom graphics after load.
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Sandcastle.addToolbarButton("Custom styling", function () {
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//Seed the random number generator for repeatable results.
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Cesium.Math.setRandomNumberSeed(0);
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const promise = Cesium.GeoJsonDataSource.load(
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"../../SampleData/ne_10m_us_states.topojson"
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);
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promise
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.then(function (dataSource) {
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viewer.dataSources.add(dataSource);
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//Get the array of entities
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const entities = dataSource.entities.values;
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const colorHash = {};
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for (let i = 0; i < entities.length; i++) {
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//For each entity, create a random color based on the state name.
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//Some states have multiple entities, so we store the color in a
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//hash so that we use the same color for the entire state.
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const entity = entities[i];
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const name = entity.name;
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let color = colorHash[name];
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if (!color) {
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color = Cesium.Color.fromRandom({
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alpha: 1.0,
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});
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colorHash[name] = color;
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}
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//Set the polygon material to our random color.
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entity.polygon.material = color;
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//Remove the outlines.
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entity.polygon.outline = false;
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//Extrude the polygon based on the state's population. Each entity
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//stores the properties for the GeoJSON feature it was created from
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//Since the population is a huge number, we divide by 50.
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entity.polygon.extrudedHeight =
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entity.properties.Population / 50.0;
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}
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})
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.catch(function (error) {
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//Display any errrors encountered while loading.
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window.alert(error);
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});
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});
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//Reset the scene when switching demos.
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Sandcastle.reset = function () {
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viewer.dataSources.removeAll();
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//Set the camera to a US centered tilted view and switch back to moving in world coordinates.
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viewer.camera.lookAt(
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Cesium.Cartesian3.fromDegrees(-98.0, 40.0),
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new Cesium.Cartesian3(0.0, -4790000.0, 3930000.0)
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);
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viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
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};
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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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