threepipe/examples/simplify-modifier-plugin/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, generateUiFolder, LoadingScreenPlugin, PickingPlugin, SimplifyModifierPlugin, ThreeViewer, } from 'threepipe';
import { TweakpaneUiPlugin } from '@threepipe/plugin-tweakpane';
import { SimplifyModifier } from 'three/examples/jsm/modifiers/SimplifyModifier.js';
import { createSimpleButtons } from '../examples-utils/simple-bottom-buttons.js';
class SimplifyModifierPluginImpl extends SimplifyModifierPlugin {
    constructor() {
        super(...arguments);
        this.uiConfig = generateUiFolder('Simplify Modifier', this);
    }
    _simplify(geometry, count) {
        const res = new SimplifyModifier().modify(geometry, count);
        res.computeVertexNormals();
        return res;
    }
}
async function init() {
    const viewer = new ThreeViewer({
        canvas: document.getElementById('mcanvas'),
        msaa: true,
        plugins: [PickingPlugin, LoadingScreenPlugin],
    });
    const simplify = viewer.addPluginSync(SimplifyModifierPluginImpl);
    const ui = viewer.addPluginSync(new TweakpaneUiPlugin(true));
    await viewer.setEnvironmentMap('https://threejs.org/examples/textures/equirectangular/venice_sunset_1k.hdr', {
        setBackground: true,
    });
    const result = await viewer.load('https://threejs.org/examples/models/gltf/DamagedHelmet/glTF/DamagedHelmet.gltf', {
        autoCenter: true,
        autoScale: true,
    });
    const mats = [];
    result?.traverse((obj) => {
        obj.materials?.map(m => {
            if (!m)
                return;
            m.wireframe = true;
            mats.push(m);
        });
    });
    createSimpleButtons({
        ['Simplify']: async (_) => {
            await simplify.simplifyAll(result, { factor: 0.5 });
        },
    });
    ui.setupPluginUi(SimplifyModifierPluginImpl);
    mats.forEach(m => ui.appendChild(m.uiConfig, { expanded: false }));
}
init().finally(_testFinish);