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218 lines
6.9 KiB
HTML
218 lines
6.9 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="Use image-based lighting to light a model."
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/>
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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
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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">
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<table>
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<tbody>
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<tr>
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<td>Luminance at Zenith</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="2.0"
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step="0.01"
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data-bind="value: luminanceAtZenith, valueUpdate: 'input'"
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/>
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<input
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type="text"
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size="4"
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data-bind="value: luminanceAtZenith"
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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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function startup(Cesium) {
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"use strict";
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//Sandcastle_Begin
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var viewer = new Cesium.Viewer("cesiumContainer");
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if (!viewer.scene.specularEnvironmentMapsSupported) {
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window.alert(
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"This browser does not support specular environment maps."
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);
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}
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var environmentMapURL =
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"https://cesium.com/public/SandcastleSampleData/kiara_6_afternoon_2k_ibl.ktx";
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var modelURL = "../../SampleData/models/Pawns/Pawns.glb";
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// This environment map was processed using Google's Filament project. To process your own:
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// 1 - Download the Filament release (https://github.com/google/filament/releases).
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// 2 - Run `cmgen --type=ktx --deploy=/path/to/output /path/to/image.hdr`. Other formats are also supported. Run `cmgen --help` for all options.
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// 3 - Take the generated coefficients and the KTX file and load them in CesiumJS as shown below.
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var L00 = new Cesium.Cartesian3(
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0.170455150831422,
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0.163151083190219,
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0.196966760289763
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);
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var L1_1 = new Cesium.Cartesian3(
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-0.066550267689383,
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-0.022088055746048,
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0.078835009246127
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);
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var L10 = new Cesium.Cartesian3(
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0.038364097478591,
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0.045714300098753,
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0.063498904606215
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);
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var L11 = new Cesium.Cartesian3(
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-0.01436536331281,
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-0.026490613715151,
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-0.05018940406602
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);
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var L2_2 = new Cesium.Cartesian3(
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-0.05153278691789,
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-0.050777795729986,
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-0.056449044453032
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);
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var L2_1 = new Cesium.Cartesian3(
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0.043454596136534,
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0.046672590104157,
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0.05753010764661
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);
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var L20 = new Cesium.Cartesian3(
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-0.00164046627411,
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0.001286638231156,
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0.007228908989616
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);
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var L21 = new Cesium.Cartesian3(
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-0.042260855700641,
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-0.046394335094707,
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-0.057562936365585
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);
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var L22 = new Cesium.Cartesian3(
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-0.004953478914091,
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-0.000479681664876,
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0.008508150106928
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);
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var coefficients = [L00, L1_1, L10, L11, L2_2, L2_1, L20, L21, L22];
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var height = 0.0;
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var hpr = new Cesium.HeadingPitchRoll(0.0, 0.0, 0.0);
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var origin = Cesium.Cartesian3.fromDegrees(
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-123.0744619,
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44.0503706,
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height
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);
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var modelMatrix = Cesium.Transforms.headingPitchRollToFixedFrame(
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origin,
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hpr
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);
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var model = viewer.scene.primitives.add(
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Cesium.Model.fromGltf({
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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.readyPromise
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.then(function (model) {
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var camera = viewer.camera;
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// Zoom to model
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var controller = viewer.scene.screenSpaceCameraController;
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var r =
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2.0 * Math.max(model.boundingSphere.radius, camera.frustum.near);
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controller.minimumZoomDistance = r * 0.5;
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var center = Cesium.Matrix4.multiplyByPoint(
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model.modelMatrix,
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model.boundingSphere.center,
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new Cesium.Cartesian3()
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);
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var heading = Cesium.Math.toRadians(230.0);
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var pitch = Cesium.Math.toRadians(-20.0);
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camera.lookAt(
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center,
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new Cesium.HeadingPitchRange(heading, pitch, r * 2.0)
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);
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camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
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model.sphericalHarmonicCoefficients = coefficients;
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model.specularEnvironmentMaps = environmentMapURL;
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// The viewModel tracks the state of our mini application.
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var viewModel = {
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luminanceAtZenith: model.luminanceAtZenith,
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};
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// Convert the viewModel members into knockout observables.
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Cesium.knockout.track(viewModel);
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// Bind the viewModel to the DOM elements of the UI that call for it.
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var toolbar = document.getElementById("toolbar");
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Cesium.knockout.applyBindings(viewModel, toolbar);
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function subscribeParameter(name) {
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Cesium.knockout
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.getObservable(viewModel, name)
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.subscribe(function (newValue) {
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model[name] = newValue;
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});
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}
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subscribeParameter("luminanceAtZenith");
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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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model.sphericalHarmonicCoefficients = coefficients;
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model.specularEnvironmentMaps = environmentMapURL;
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} else {
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model.sphericalHarmonicCoefficients = undefined;
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model.specularEnvironmentMaps = undefined;
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}
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}
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);
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})
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.otherwise(function (error) {
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window.alert(error);
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});
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//Sandcastle_End
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Sandcastle.finishedLoading();
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}
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if (typeof Cesium !== "undefined") {
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window.startupCalled = true;
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startup(Cesium);
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}
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</script>
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</body>
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</html>
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