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gkjohnsongeorginahalpernGeorgina Halpern
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Add support for Babylon tiles renderer (#1389)
* Add babylon renderer * Add a README * Adjust aliases * Move comment * Add demos * Fixups * Remove log * Clean up demos * Add minimum types * Add new demos * Reduce scratch math object creation * Reduce scratch variable creation * Use specific imports * Fixes * Fix frustums * Fix import usage * Add attributions to the index js example * Add initial work for babylon google attributions * simplify styles * Fix lint issue * Update babylon-support branch to use GeospatialCamera, es6 imports, module-level GTLF loader function, auto-detect extension, and observables (#1467) * add PR changes * use geo cam * with debug logs * obb changes * better starting view * cleanup * try * depth buffer * remove reverse depth buffer * geospatial cam * cleanup and packagelock.json * packagelock * Remove space * comments * adjust babylon peer dependencies * Remove the need load the gltf json twice * Update package lock * Remove sample gltf file comment * Remove console log from example * Ensure the babylon packages are marked as optional --------- Co-authored-by: Georgina Halpern <[email protected]> Co-authored-by: Garrett Johnson <[email protected]> * cached -> engineData * Pass the extension in the "parse" function * store metadata from json (#1468) Co-authored-by: Georgina Halpern <[email protected]> * Adjust clear colors * group -> scene * README update --------- Co-authored-by: Georgie <[email protected]> Co-authored-by: Georgina Halpern <[email protected]>
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‎example/babylonjs/googleMapsAerial.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<title>Google Maps Aerial - Babylon.js 3D Tiles</title>
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
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<link rel="stylesheet" href="../styles.css">
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</head>
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<body>
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<div id="info">
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<div>
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Tokyo Tower example using <a href="https://cloud.google.com/blog/products/maps-platform/create-immersive-3d-map-experiences-photorealistic-3d-tiles">Googles Photorealistic 3D Tiles</a> & <a href="https://ion.cesium.com/">Cesium Ion</a>
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<br/>
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Google Cloud or Cesium Ion API token required
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</div>
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</div>
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<div id="footer">
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<div id="credits"></div>
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<div id="logos">
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<img src="../logos/google.png" />
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<img src="../logos/cesiumion.png" />
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</div>
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</div>
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<canvas id="renderCanvas"></canvas>
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<script type="module" src="./googleMapsAerial.js"></script>
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</body>
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</html>

‎example/babylonjs/googleMapsAerial.js‎

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import { Scene, Engine, GeospatialCamera, Vector3, Color4 } from '@babylonjs/core';
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import { GeospatialClippingBehavior } from '@babylonjs/core/Behaviors/Cameras';
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import { TilesRenderer } from '3d-tiles-renderer/babylonjs';
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import { CesiumIonAuthPlugin } from '3d-tiles-renderer/core/plugins';
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import GUI from 'lil-gui';
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const GOOGLE_TILES_ASSET_ID = 2275207;
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const PLANET_RADIUS = 6378137;
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// gui
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const params = {
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enabled: true,
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visibleTiles: 0,
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errorTarget: 20,
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minZ: 0,
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maxZ: 0,
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};
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const gui = new GUI();
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gui.add( params, 'enabled' );
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gui.add( params, 'visibleTiles' ).name( 'Visible Tiles' ).listen().disable();
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gui.add( params, 'errorTarget', 1, 100 );
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gui.add( params, 'minZ' ).name( 'Camera MinZ' ).listen().disable();
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gui.add( params, 'maxZ' ).name( 'Camera MaxZ' ).listen().disable();
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// engine
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const canvas = document.getElementById( 'renderCanvas' );
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const engine = new Engine( canvas, true, { useLargeWorldRendering: true } );
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engine.setHardwareScalingLevel( 1 / window.devicePixelRatio );
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// scene
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const scene = new Scene( engine );
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scene.clearColor = new Color4( 0.05, 0.05, 0.05, 1 );
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// 3D Tiles data uses right-handed coordinate system
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scene.useRightHandedSystem = true;
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// camera
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const camera = new GeospatialCamera( 'geo', scene, { planetRadius: PLANET_RADIUS } );
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camera.attachControl( true );
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const clippingBehavior = new GeospatialClippingBehavior();
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camera.addBehavior( clippingBehavior );
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// Start farther out, then fly in once tiles are loaded
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camera.radius = 50000;
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// Set center to Tokyo Tower location (ECEF coordinates)
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// Tokyo Tower: 35.6586° N, 139.7454° E
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camera.center = new Vector3( - 3959611.825621192, 3352599.0363458656, 3697549.0362687325 );
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camera.pitch = 1.167625429373872;
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camera.yaw = - 0.2513281792775774;
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camera.checkCollisions = true;
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scene.collisionsEnabled = true;
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// Fly to close view once tiles load
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let hasZoomedIn = false;
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// tiles
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const tiles = new TilesRenderer( null, scene );
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tiles.registerPlugin( new CesiumIonAuthPlugin( {
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apiToken: import.meta.env.VITE_ION_KEY,
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assetId: GOOGLE_TILES_ASSET_ID,
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autoRefreshToken: true,
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} ) );
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tiles.errorTarget = params.errorTarget;
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// Babylon render loop
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scene.onBeforeRenderObservable.add( () => {
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if ( params.enabled ) {
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tiles.errorTarget = params.errorTarget;
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tiles.update();
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params.visibleTiles = tiles.visibleTiles.size;
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params.minZ = camera.minZ;
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params.maxZ = camera.maxZ;
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// Once we have some tiles visible, fly in to target
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if ( ! hasZoomedIn && tiles.visibleTiles.size > 5 ) {
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hasZoomedIn = true;
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camera.flyToAsync( undefined, undefined, 300, undefined, 2000 );
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}
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}
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// update attributions
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const attributions = tiles.getAttributions();
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const creditsEl = document.getElementById( 'credits' );
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creditsEl.innerText = attributions[ 0 ]?.value || '';
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} );
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engine.runRenderLoop( () => {
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scene.render();
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} );
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// Handle window resize
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window.addEventListener( 'resize', () => {
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engine.resize();
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} );

‎example/babylonjs/index.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<title>Babylon.js 3D Tiles Demo</title>
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
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<link rel="stylesheet" href="../styles.css">
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</head>
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<body>
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<div id="info">
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<div>
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Dingo Gap site reconstructed from multiple sols of Curiosity Rover and Mars Reconnaissance Orbiter images.
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<br/>
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See more information <a href="https://github.com/NASA-AMMOS/3DTilesSampleData/tree/master/msl-dingo-gap">here</a>.
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</div>
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</div>
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<canvas id="renderCanvas"></canvas>
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<script type="module" src="./index.js"></script>
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</body>
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</html>

‎example/babylonjs/index.js‎

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import { Engine, Scene, ArcRotateCamera, Vector3, Color4 } from '@babylonjs/core';
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import { TilesRenderer } from '3d-tiles-renderer/babylonjs';
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import GUI from 'lil-gui';
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const TILESET_URL = 'https://raw.githubusercontent.com/NASA-AMMOS/3DTilesSampleData/master/msl-dingo-gap/0528_0260184_to_s64o256_colorize/0528_0260184_to_s64o256_colorize/0528_0260184_to_s64o256_colorize_tileset.json';
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// gui
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const params = {
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enabled: true,
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visibleTiles: 0,
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};
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const gui = new GUI();
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gui.add( params, 'enabled' );
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gui.add( params, 'visibleTiles' ).listen().disable();
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// init engine
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const canvas = document.getElementById( 'renderCanvas' );
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const engine = new Engine( canvas, true, { useLargeWorldRendering: true } );
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engine.setHardwareScalingLevel( 1 / window.devicePixelRatio );
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// scene
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const scene = new Scene( engine );
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scene.clearColor = new Color4( 0.05, 0.05, 0.05, 1 );
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scene.useRightHandedSystem = true;
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// Camera controls
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const camera = new ArcRotateCamera(
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'camera',
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- Math.PI / 2,
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Math.PI / 2.5,
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new Vector3( 0, 0, 0 ),
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scene,
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);
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camera.attachControl( canvas, true );
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camera.minZ = 0.1;
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camera.maxZ = 1000;
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// instantiate tiles renderer and orient the group so it's Z+ down
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const tiles = new TilesRenderer( TILESET_URL, scene );
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tiles.group.rotation.x = Math.PI / 2;
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// render
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scene.onBeforeRenderObservable.add( () => {
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if ( params.enabled ) {
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tiles.update();
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}
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params.visibleTiles = tiles.visibleTiles.size;
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} );
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engine.runRenderLoop( () => {
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scene.render();
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} );
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// resize
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window.addEventListener( 'resize', () => {
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engine.resize();
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} );

‎example/styles.css‎

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padding: 0;
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}
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html {
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html, body {
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overflow: hidden;
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font-family: Arial, Helvetica, sans-serif;
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user-select: none;
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width: 100%;
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height: 100%;
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}
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canvas {
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width: 100%;
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height: 100%;
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image-rendering: pixelated;
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outline: none;
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}

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