forked from Rowland/EG
163 lines
6.0 KiB
HTML
163 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="Use image-based lighting to light a model." />
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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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if (!viewer.scene.specularEnvironmentMapsSupported) {
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window.alert("This browser does not support specular environment maps.");
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}
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const modelURL = "../../SampleData/models/Pawns/Pawns.glb";
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// This environment map was processed using Khronos's glTF IBL Sampler. To process your own:
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// 1 - Download and build the Khronos glTF IBL Sampler (https://github.com/KhronosGroup/glTF-IBL-Sampler).
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// 2 - Run `cli -inputPath /path/to/image.hdr -outCubeMap /path/to/output.ktx2`. Run `cli -h` for all options.
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const environmentMapURL =
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"https://cesium.com/public/SandcastleSampleData/kiara_6_afternoon_2k_ibl.ktx2";
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// To generate the spherical harmonic coefficients below, use Google's Filament project:
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// 1 - Download the Filament release (https://github.com/google/filament/releases).
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// 2 - Run `cmgen --no-mirror --type=ktx --deploy=/path/to/output /path/to/image.hdr`.
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// Other formats are also supported. Run `cmgen --help` for all options.
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// 3 - Take the generated coefficients and load them in CesiumJS as shown below.
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const L00 = new Cesium.Cartesian3(
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1.234897375106812,
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1.221635103225708,
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1.273374080657959,
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);
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const L1_1 = new Cesium.Cartesian3(
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1.136140108108521,
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1.171419978141785,
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1.287894368171692,
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);
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const L10 = new Cesium.Cartesian3(
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1.245410919189453,
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1.245791077613831,
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1.283067107200623,
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);
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const L11 = new Cesium.Cartesian3(
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1.107124328613281,
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1.112697005271912,
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1.153419137001038,
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);
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const L2_2 = new Cesium.Cartesian3(
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1.08641505241394,
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1.079904079437256,
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1.10212504863739,
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);
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const L2_1 = new Cesium.Cartesian3(
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1.190043210983276,
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1.186099290847778,
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1.214627981185913,
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);
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const L20 = new Cesium.Cartesian3(
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0.017783647403121,
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0.020140396431088,
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0.025317270308733,
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);
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const L21 = new Cesium.Cartesian3(
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1.087014317512512,
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1.084779262542725,
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1.111417651176453,
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);
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const L22 = new Cesium.Cartesian3(
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-0.052426788955927,
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-0.048315055668354,
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-0.041973855346441,
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);
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const coefficients = [L00, L1_1, L10, L11, L2_2, L2_1, L20, L21, L22];
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const height = 0.0;
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const hpr = new Cesium.HeadingPitchRoll(0.0, 0.0, 0.0);
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const origin = Cesium.Cartesian3.fromDegrees(-123.0744619, 44.0503706, height);
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const modelMatrix = Cesium.Transforms.headingPitchRollToFixedFrame(origin, hpr);
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try {
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const model = viewer.scene.primitives.add(
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await Cesium.Model.fromGltfAsync({
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url: modelURL,
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modelMatrix: modelMatrix,
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minimumPixelSize: 128,
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}),
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);
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model.readyEvent.addEventListener(() => {
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const camera = viewer.camera;
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// Zoom to model
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const controller = viewer.scene.screenSpaceCameraController;
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const r = 2.0 * Math.max(model.boundingSphere.radius, camera.frustum.near);
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controller.minimumZoomDistance = r * 0.5;
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const center = model.boundingSphere.center;
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const heading = Cesium.Math.toRadians(230.0);
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const pitch = Cesium.Math.toRadians(-20.0);
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camera.lookAt(center, new Cesium.HeadingPitchRange(heading, pitch, r * 2.0));
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camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
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const ibl = model.imageBasedLighting;
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ibl.sphericalHarmonicCoefficients = coefficients;
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ibl.specularEnvironmentMaps = environmentMapURL;
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model.environmentMapManager.groundColor =
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Cesium.Color.fromCssColorString("#292817");
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Sandcastle.addToggleButton(
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"Use procedural environment lighting",
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false,
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function (checked) {
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if (!checked) {
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ibl.sphericalHarmonicCoefficients = coefficients;
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ibl.specularEnvironmentMaps = environmentMapURL;
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} else {
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ibl.sphericalHarmonicCoefficients = undefined;
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ibl.specularEnvironmentMaps = undefined;
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}
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},
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);
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});
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} catch (error) {
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window.alert(`Error loading model: ${error}`);
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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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