mirror of https://github.com/CesiumGS/cesium.git
169 lines
6.0 KiB
HTML
169 lines
6.0 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="Manually control a model's animations." />
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<meta name="cesium-sandcastle-labels" content="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 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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</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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shouldAnimate: true,
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});
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//Make sure viewer is at the desired time.
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const start = Cesium.JulianDate.fromDate(new Date(2018, 11, 12, 15));
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const totalSeconds = 30;
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const stop = Cesium.JulianDate.addSeconds(
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start,
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totalSeconds,
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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.timeline.zoomTo(start, stop);
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// Create a path for our model by lerping between two positions.
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const position = new Cesium.SampledPositionProperty();
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const distance = new Cesium.SampledProperty(Number);
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const startPosition = new Cesium.Cartesian3(
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-2379556.799372864,
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-4665528.205030263,
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3628013.106599678,
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);
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const endPosition = new Cesium.Cartesian3(
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-2379603.7074103747,
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-4665623.48990283,
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3627860.82704567,
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);
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// A velocity vector property will give us the entity's speed and direction at any given time.
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const velocityVectorProperty = new Cesium.VelocityVectorProperty(position, false);
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const velocityVector = new Cesium.Cartesian3();
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const numberOfSamples = 100;
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let prevLocation = startPosition;
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let totalDistance = 0;
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for (let i = 0; i <= numberOfSamples; ++i) {
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const factor = i / numberOfSamples;
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const time = Cesium.JulianDate.addSeconds(
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start,
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factor * totalSeconds,
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new Cesium.JulianDate(),
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);
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// Lerp using a non-linear factor so that the model accelerates.
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const locationFactor = Math.pow(factor, 2);
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const location = Cesium.Cartesian3.lerp(
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startPosition,
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endPosition,
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locationFactor,
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new Cesium.Cartesian3(),
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);
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position.addSample(time, location);
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distance.addSample(
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time,
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(totalDistance += Cesium.Cartesian3.distance(location, prevLocation)),
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);
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prevLocation = location;
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}
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function updateSpeedLabel(time, result) {
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velocityVectorProperty.getValue(time, velocityVector);
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const metersPerSecond = Cesium.Cartesian3.magnitude(velocityVector);
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const kmPerHour = Math.round(metersPerSecond * 3.6);
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return `${kmPerHour} km/hr`;
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}
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// Add our model.
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try {
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const modelPrimitive = viewer.scene.primitives.add(
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await Cesium.Model.fromGltfAsync({
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url: "../../SampleData/models/CesiumMan/Cesium_Man.glb",
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scale: 4,
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}),
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);
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modelPrimitive.readyEvent.addEventListener(() => {
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modelPrimitive.activeAnimations.addAll({
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loop: Cesium.ModelAnimationLoop.REPEAT,
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animationTime: function (duration) {
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return distance.getValue(viewer.clock.currentTime) / duration;
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},
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multiplier: 0.25,
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});
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});
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const rotation = new Cesium.Matrix3();
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viewer.scene.preUpdate.addEventListener(function () {
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const time = viewer.clock.currentTime;
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const pos = position.getValue(time);
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const vel = velocityVectorProperty.getValue(time);
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Cesium.Cartesian3.normalize(vel, vel);
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Cesium.Transforms.rotationMatrixFromPositionVelocity(
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pos,
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vel,
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viewer.scene.globe.ellipsoid,
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rotation,
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);
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Cesium.Matrix4.fromRotationTranslation(
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rotation,
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pos,
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modelPrimitive.modelMatrix,
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);
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});
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} catch (error) {
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window.alert(error);
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}
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const modelLabel = viewer.entities.add({
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position: position,
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orientation: new Cesium.VelocityOrientationProperty(position), // Automatically set the model's orientation to the direction it's facing.
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label: {
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text: new Cesium.CallbackProperty(updateSpeedLabel, false),
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font: "20px sans-serif",
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showBackground: true,
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distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0.0, 100.0),
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eyeOffset: new Cesium.Cartesian3(0, 7.2, 0),
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},
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});
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viewer.trackedEntity = modelLabel;
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modelLabel.viewFrom = new Cesium.Cartesian3(-30.0, -10.0, 10.0);
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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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