threepipe/examples/rect-area-light/script.js

A 3D viewer framework built on top of three.js in TypeScript with a focus on quality rendering, modularity and extensibility.

import { _testFinish, Box3B, LoadingScreenPlugin, Mesh, Object3DWidgetsPlugin, PhysicalMaterial, PlaneGeometry, RectAreaLight2, ThreeViewer, Vector3, } from 'threepipe';
import { TweakpaneUiPlugin } from '@threepipe/plugin-tweakpane';
async function init() {
    const viewer = new ThreeViewer({
        canvas: document.getElementById('mcanvas'),
        msaa: true,
        dropzone: {
            allowedExtensions: ['gltf', 'glb', 'hdr', 'obj', 'fbx', 'bin', 'png', 'jpeg', 'webp', 'jpg', 'exr'],
            addOptions: {
                disposeSceneObjects: true,
                autoSetEnvironment: true, // when hdr/exr is dropped
            },
        },
        plugins: [Object3DWidgetsPlugin, LoadingScreenPlugin],
    });
    // viewer.scene.addObject(new HemisphereLight(0xffffff, 0x444444, 10))
    const result = await viewer.load('https://threejs.org/examples/models/gltf/ShadowmappableMesh.glb', {
        autoCenter: true,
        autoScale: true,
    });
    const ground = new Mesh(new PlaneGeometry(100, 100)
        .rotateX(-Math.PI / 2)
        .translate(0, new Box3B().expandByObject(result).getSize(new Vector3()).y / -2, 0), new PhysicalMaterial({
        color: '#ffffff',
    }));
    viewer.scene.addObject(ground);
    const light = viewer.scene.addObject(new RectAreaLight2(0xffffff, 4));
    light.position.set(2, 4, 0);
    light.lookAt(0, 4, 0);
    light.width = 2;
    light.height = 10;
    const ui = viewer.addPluginSync(TweakpaneUiPlugin, true);
    ui.appendChild(light.uiConfig, { expanded: true });
}
init().finally(_testFinish);