197 lines
6.8 KiB
HTML
197 lines
6.8 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="Configure viewer to add a button enabling look at a mobile device with cardboard."
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/>
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<meta name="cesium-sandcastle-labels" content="Beginner, Showcases" />
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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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vrButton: true,
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terrain: Cesium.Terrain.fromWorldTerrain(),
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});
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// Click the VR button in the bottom right of the screen to switch to VR mode.
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viewer.scene.globe.enableLighting = true;
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viewer.scene.globe.depthTestAgainstTerrain = true;
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// Follow the path of a plane. See the interpolation Sandcastle example.
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Cesium.Math.setRandomNumberSeed(3);
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const start = Cesium.JulianDate.fromDate(new Date(2015, 2, 25, 16));
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const stop = Cesium.JulianDate.addSeconds(
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start,
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360,
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new Cesium.JulianDate()
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);
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viewer.clock.startTime = start.clone();
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viewer.clock.stopTime = stop.clone();
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viewer.clock.currentTime = start.clone();
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viewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP;
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viewer.clock.multiplier = 1.0;
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viewer.clock.shouldAnimate = true;
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function computeCirclularFlight(lon, lat, radius) {
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const property = new Cesium.SampledPositionProperty();
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const startAngle = Cesium.Math.nextRandomNumber() * 360.0;
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const endAngle = startAngle + 360.0;
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const increment =
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(Cesium.Math.nextRandomNumber() * 2.0 - 1.0) * 10.0 + 45.0;
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for (let i = startAngle; i < endAngle; i += increment) {
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const radians = Cesium.Math.toRadians(i);
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const timeIncrement = i - startAngle;
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const time = Cesium.JulianDate.addSeconds(
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start,
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timeIncrement,
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new Cesium.JulianDate()
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);
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const position = Cesium.Cartesian3.fromDegrees(
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lon + radius * 1.5 * Math.cos(radians),
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lat + radius * Math.sin(radians),
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Cesium.Math.nextRandomNumber() * 500 + 1800
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);
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property.addSample(time, position);
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}
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return property;
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}
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const longitude = -112.110693;
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const latitude = 36.0994841;
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const radius = 0.03;
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const modelURI =
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"../../SampleData/models/CesiumBalloon/CesiumBalloon.glb";
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const entity = viewer.entities.add({
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availability: new Cesium.TimeIntervalCollection([
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new Cesium.TimeInterval({
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start: start,
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stop: stop,
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}),
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]),
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position: computeCirclularFlight(longitude, latitude, radius),
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model: {
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uri: modelURI,
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minimumPixelSize: 64,
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},
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});
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entity.position.setInterpolationOptions({
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interpolationDegree: 2,
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interpolationAlgorithm: Cesium.HermitePolynomialApproximation,
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});
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// Set initial camera position and orientation to be when in the model's reference frame.
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const camera = viewer.camera;
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camera.position = new Cesium.Cartesian3(0.25, 0.0, 0.0);
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camera.direction = new Cesium.Cartesian3(1.0, 0.0, 0.0);
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camera.up = new Cesium.Cartesian3(0.0, 0.0, 1.0);
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camera.right = new Cesium.Cartesian3(0.0, -1.0, 0.0);
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viewer.scene.postUpdate.addEventListener(function (scene, time) {
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const position = entity.position.getValue(time);
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if (!Cesium.defined(position)) {
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return;
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}
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let transform;
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if (!Cesium.defined(entity.orientation)) {
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transform = Cesium.Transforms.eastNorthUpToFixedFrame(position);
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} else {
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const orientation = entity.orientation.getValue(time);
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if (!Cesium.defined(orientation)) {
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return;
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}
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transform = Cesium.Matrix4.fromRotationTranslation(
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Cesium.Matrix3.fromQuaternion(orientation),
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position
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);
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}
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// Save camera state
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const offset = Cesium.Cartesian3.clone(camera.position);
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const direction = Cesium.Cartesian3.clone(camera.direction);
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const up = Cesium.Cartesian3.clone(camera.up);
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// Set camera to be in model's reference frame.
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camera.lookAtTransform(transform);
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// Reset the camera state to the saved state so it appears fixed in the model's frame.
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Cesium.Cartesian3.clone(offset, camera.position);
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Cesium.Cartesian3.clone(direction, camera.direction);
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Cesium.Cartesian3.clone(up, camera.up);
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Cesium.Cartesian3.cross(direction, up, camera.right);
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});
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// Add a few more balloons flying with the one the viewer is in.
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const numBalloons = 12;
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for (let i = 0; i < numBalloons; ++i) {
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const balloonRadius =
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(Cesium.Math.nextRandomNumber() * 2.0 - 1.0) * 0.01 + radius;
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const balloon = viewer.entities.add({
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availability: new Cesium.TimeIntervalCollection([
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new Cesium.TimeInterval({
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start: start,
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stop: stop,
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}),
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]),
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position: computeCirclularFlight(
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longitude,
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latitude,
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balloonRadius
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),
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model: {
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uri: modelURI,
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minimumPixelSize: 64,
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},
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});
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balloon.position.setInterpolationOptions({
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interpolationDegree: 2,
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interpolationAlgorithm: Cesium.HermitePolynomialApproximation,
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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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