threejs使用unrealBloomPass实现辉光效果

效果预览：效果预览
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一、安装

npm install three

二、App.vue

<template>
  <div>
    <div id="container"></div>
  </div>
</template>
<script>
import * as THREE from 'three';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls';
import { UnrealBloomPass } from 'three/examples/jsm/postprocessing/UnrealBloomPass';
import { RenderPass } from 'three/examples/jsm/postprocessing/RenderPass';
import { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer';

export default {
  data() {
    return {
      scene: null, // 场景
      camera: null, // 相机
      renderer: null, // 渲染
      composer: null, // 效果合成器
      cube: null
    };
  },
  mounted() {
    this.init();
  },
  methods: {
    // 初始化
    init() {
      const el = document.getElementById('container');
      this.initScene();
      this.initCamera();
      this.initRenderer(el);
      this.initCube();
      this.initBloomPass()
      this.initOrbitControls();
      this.render();
      this.requestAnimationFrame()
    },
    // 场景
    initScene() {
      this.scene = new THREE.Scene();
      this.scene.background = new THREE.Color('#000000');
    },
    // 相机
    initCamera() {
      this.camera = new THREE.PerspectiveCamera(
        75,
        window.innerWidth / window.innerHeight,
        0.1,
        1000
      );
      this.camera.position.set(2, 5, 2);
    },
    // 渲染器
    initRenderer(el) {
      this.renderer = new THREE.WebGLRenderer();
      this.renderer.setSize(window.innerWidth, window.innerHeight);
      el.appendChild(this.renderer.domElement);
    },
    // 立方体
    initCube() {
      const geometry = new THREE.BoxGeometry(2, 2, 2);
      const material = new THREE.MeshBasicMaterial({ color: '#00ffff' });
      this.cube = new THREE.Mesh(geometry, material);
      this.scene.add(this.cube);
      this.camera.position.z = 5;
    },
    // 炫光
    initBloomPass() {
      let renderScene = new RenderPass(this.scene, this.camera);
      let bloomPass = new UnrealBloomPass(
        new THREE.Vector2(window.innerWidth, window.innerHeight),
        1.5,
        0.4,
        0.85
      );
      bloomPass.renderToScreen = true;
      bloomPass.threshold = 0;
      bloomPass.strength = 1;
      bloomPass.radius = 0;
      this.composer = new EffectComposer(this.renderer);
      this.composer.setSize(window.innerWidth, window.innerHeight);
      this.composer.addPass(renderScene);
      this.composer.addPass(bloomPass);
    },
    // 缩放
    initOrbitControls() {
      let controls = new OrbitControls(this.camera, this.renderer.domElement);
      controls.maxDistance = 10;
      controls.addEventListener('change', this.render);
    },
    requestAnimationFrame() {
      this.composer.render();
      requestAnimationFrame(this.requestAnimationFrame);
    },
    // 渲染
    render() {
      this.renderer.render(this.scene, this.camera);
    }
  }
};
</script>