109 lines
4.2 KiB
JavaScript
109 lines
4.2 KiB
JavaScript
const environ = 'pillars_2k';
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const ibl_url = `${environ}/${environ}_ibl.ktx`;
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const sky_url = `${environ}/${environ}_skybox.ktx`;
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const filamat_url = 'plastic.filamat'
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Filament.init([filamat_url, ibl_url, sky_url], () => {
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// Create some global aliases to enums for convenience.
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window.VertexAttribute = Filament.VertexAttribute;
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window.AttributeType = Filament.VertexBuffer$AttributeType;
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window.PrimitiveType = Filament.RenderableManager$PrimitiveType;
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window.IndexType = Filament.IndexBuffer$IndexType;
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window.Fov = Filament.Camera$Fov;
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window.LightType = Filament.LightManager$Type;
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// Obtain the canvas DOM object and pass it to the App.
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const canvas = document.getElementsByTagName('canvas')[0];
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window.app = new App(canvas);
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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(canvas);
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const scene = engine.createScene();
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const material = engine.createMaterial(filamat_url);
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const matinstance = material.createInstance();
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const red = [0.8, 0.0, 0.0];
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matinstance.setColor3Parameter('baseColor', Filament.RgbType.sRGB, red);
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matinstance.setFloatParameter('roughness', 0.5);
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matinstance.setFloatParameter('clearCoat', 1.0);
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matinstance.setFloatParameter('clearCoatRoughness', 0.3);
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const renderable = Filament.EntityManager.get()
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.create();
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scene.addEntity(renderable);
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const icosphere = new Filament.IcoSphere(5);
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const vb = Filament.VertexBuffer.Builder()
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.vertexCount(icosphere.vertices.length / 3)
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.bufferCount(2)
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.attribute(VertexAttribute.POSITION, 0, AttributeType.FLOAT3, 0, 0)
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.attribute(VertexAttribute.TANGENTS, 1, AttributeType.SHORT4, 0, 0)
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.normalized(VertexAttribute.TANGENTS)
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.build(engine);
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const ib = Filament.IndexBuffer.Builder()
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.indexCount(icosphere.triangles.length)
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.bufferType(IndexType.USHORT)
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.build(engine);
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vb.setBufferAt(engine, 0, icosphere.vertices);
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vb.setBufferAt(engine, 1, icosphere.tangents);
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ib.setBuffer(engine, icosphere.triangles);
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Filament.RenderableManager.Builder(1)
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.boundingBox({
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center: [-1, -1, -1],
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halfExtent: [1, 1, 1]
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})
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.material(0, matinstance)
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.geometry(0, PrimitiveType.TRIANGLES, vb, ib)
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.build(engine, renderable);
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const sunlight = Filament.EntityManager.get()
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.create();
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scene.addEntity(sunlight);
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Filament.LightManager.Builder(LightType.SUN)
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.color([0.98, 0.92, 0.89])
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.intensity(110000.0)
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.direction([0.6, -1.0, -0.8])
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.sunAngularRadius(1.9)
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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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const backlight = Filament.EntityManager.get()
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.create();
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scene.addEntity(backlight);
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Filament.LightManager.Builder(LightType.DIRECTIONAL)
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.direction([-1, 0, 1])
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.intensity(50000.0)
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.build(engine, backlight);
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const indirectLight = engine.createIblFromKtx1(ibl_url);
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indirectLight.setIntensity(50000);
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scene.setIndirectLight(indirectLight);
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const skybox = engine.createSkyFromKtx1(sky_url);
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scene.setSkybox(skybox);
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this.swapChain = engine.createSwapChain();
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this.renderer = engine.createRenderer();
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this.camera = engine.createCamera(Filament.EntityManager.get()
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.create());
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this.view = engine.createView();
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this.view.setCamera(this.camera);
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this.view.setScene(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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const eye = [0, 0, 4],
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center = [0, 0, 0],
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up = [0, 1, 0];
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const radians = Date.now() / 10000;
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vec3.rotateY(eye, eye, center, radians);
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this.camera.lookAt(eye, center, up);
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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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this.camera.setProjectionFov(45, width / height, 1.0, 10.0, Fov.VERTICAL);
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}
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}
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