145 lines
5.1 KiB
HTML
145 lines
5.1 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>FlightHelmet</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,user-scalable=no,initial-scale=1">
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<link href="favicon.png" rel="icon" type="image/x-icon" />
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<style>
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html, body { height: 100%; }
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body { margin: 0; overflow: hidden; }
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#container { position: relative; height: 100%; }
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canvas { position: absolute; width: 100%; height: 100%; }
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#messages { position: absolute; width: 100%; height: 100%; padding-left: 10px; color:white; }
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</style>
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</head>
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<body>
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<div id="container">
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<canvas></canvas>
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<pre id="messages"></pre>
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</div>
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<script src="filament.js"></script>
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<script src="gl-matrix-min.js"></script>
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<script src="https://unpkg.com/gltumble"></script>
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<script>
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const env = 'venetian_crossroads_2k';
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const ibl_url = `${env}/${env}_ibl.ktx`;
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const sky_url = `${env}/${env}_skybox.ktx`;
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const mesh_url = 'FlightHelmet.gltf';
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Filament.init([mesh_url, ibl_url, sky_url], () => {
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window.gltfio = Filament.gltfio;
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window.Fov = Filament.Camera$Fov;
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window.LightType = Filament.LightManager$Type;
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window.IndirectLight = Filament.IndirectLight;
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window.app = new App(document.getElementsByTagName('canvas')[0]);
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});
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class App {
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constructor(canvas) {
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this.canvas = canvas;
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const engine = this.engine = Filament.Engine.create(this.canvas);
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const scene = this.scene = engine.createScene();
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this.trackball = new Trackball(canvas, {startSpin: 0.035});
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const indirectLight = this.ibl = engine.createIblFromKtx(ibl_url);
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this.scene.setIndirectLight(indirectLight);
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const iblDirection = IndirectLight.getDirectionEstimate(indirectLight.shfloats);
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const iblColor = IndirectLight.getColorEstimate(indirectLight.shfloats, iblDirection);
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indirectLight.setIntensity(50000);
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const skybox = engine.createSkyFromKtx(sky_url);
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this.scene.setSkybox(skybox);
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const sunlight = Filament.EntityManager.get().create();
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Filament.LightManager.Builder(LightType.SUN)
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.color(iblColor.slice(0, 3))
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.intensity(150000)
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.direction(iblDirection)
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.sunAngularRadius(1.9)
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.castShadows(true)
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.sunHaloSize(10.0)
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.sunHaloFalloff(80.0)
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.build(engine, sunlight);
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this.scene.addEntity(sunlight);
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const loader = engine.createAssetLoader();
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const asset = this.asset = loader.createAssetFromJson(mesh_url);
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const messages = document.getElementById('messages');
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// Crudely indicate progress by printing the URI of each resource as it is loaded.
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const onFetched = (uri) => messages.innerText += `Downloaded ${uri}\n`;
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const onDone = () => {
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// Destroy the asset loader.
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loader.delete();
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// Enable shadows on every renderable.
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const entities = asset.getEntities();
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const rm = engine.getRenderableManager();
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for (let i = 0; i < entities.size(); i++) {
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const instance = rm.getInstance(entities.get(i));
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rm.setCastShadows(instance, true);
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instance.delete();
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}
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// Hide the HUD.
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messages.remove();
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};
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asset.loadResources(onDone, onFetched);
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this.swapChain = engine.createSwapChain();
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this.renderer = engine.createRenderer();
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this.camera = engine.createCamera();
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this.camera.setExposure(32, 1/125.0, 100);
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this.view = engine.createView();
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this.view.setCamera(this.camera);
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this.view.setScene(this.scene);
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this.resize();
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this.render = this.render.bind(this);
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this.resize = this.resize.bind(this);
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window.addEventListener('resize', this.resize);
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window.requestAnimationFrame(this.render);
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}
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render() {
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// Spin the model according to the trackball controller.
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const tcm = this.engine.getTransformManager();
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const inst = tcm.getInstance(this.asset.getRoot());
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tcm.setTransform(inst, this.trackball.getMatrix());
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inst.delete();
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// Add renderable entities to the scene as they become ready.
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let entity;
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const popRenderable = () => {
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entity = this.asset.popRenderable();
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return entity.getId() != 0;
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}
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while (popRenderable()) {
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this.scene.addEntity(entity);
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}
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// Render the scene and request the next animation frame.
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this.renderer.render(this.swapChain, this.view);
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window.requestAnimationFrame(this.render);
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}
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resize() {
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const dpr = window.devicePixelRatio;
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const width = this.canvas.width = window.innerWidth * dpr;
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const height = this.canvas.height = window.innerHeight * dpr;
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this.view.setViewport([0, 0, width, height]);
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const y = -0.125, eye = [0, y, 2], center = [0, y, 0], up = [0, 1, 0];
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this.camera.lookAt(eye, center, up);
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const aspect = width / height;
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const fov = aspect < 1 ? Fov.HORIZONTAL : Fov.VERTICAL;
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this.camera.setProjectionFov(30, aspect, 1.0, 10.0, fov);
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}
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}
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</script>
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</body>
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</html>
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