three.js CSS3DRenderer、CSS3DSprite渲染HTML标签

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效果:

<template>
  <div>
    <el-container>
      <el-main>
        <div class="box-card-left">
          <div id="threejs" style="border: 1px solid red;position: relative;"></div>
        </div>
      </el-main>
    </el-container>
  </div>
</template>
<script>
// 引入轨道控制器扩展库OrbitControls.js
import { OrbitControls } from "three/examples/jsm/controls/OrbitControls.js";
import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js";
// 效果制作器
import { EffectComposer } from "three/examples/jsm/postprocessing/EffectComposer.js";
// 渲染通道
import { RenderPass } from "three/examples/jsm/postprocessing/RenderPass.js";
// 发光描边OutlinePass
import { OutlinePass } from "three/examples/jsm/postprocessing/OutlinePass.js";
import { CSS2DObject, CSS2DRenderer } from "three/examples/jsm/renderers/CSS2DRenderer.js";
import { CSS3DObject, CSS3DSprite, CSS3DRenderer } from "three/examples/jsm/renderers/CSS3DRenderer.js";

export default {
  data() {
    return {
      name: "",
      scene: null,
      camera: null,
      renderer: null,
      css3DRenderer: null,
      effectComposer: null,
      mesh: null,
      geometry: null,
      group: null,
      material: null,
      texture: null,
      position: null,
      outlinePass: null,
      canvasWidth: 1000,
      canvasHeight: 800,
      color: [],
      meshArr: [],
    };
  },
  created() {},
  mounted() {
    this.name = this.$route.query.name;
    this.init();
  },
  methods: {
    goBack() {
      this.$router.go(-1);
    },
    init() {
      // 创建场景对象
      this.scene = new this.$three.Scene();
      // 创建环境光对象
      const light = new this.$three.AmbientLight(0xffffff,20);
      this.scene.add(light);
      // 创建辅助坐标轴对象
      const axesHelper = new this.$three.AxesHelper(200);
      this.scene.add(axesHelper);
      // 创建gltf对象，加载模型文件
      const gltfLoader = new GLTFLoader();
      gltfLoader.load("/models/gltf/phone/iphone 12 mini/Model_formats/iphone12mini-3.glb", e => {
        e.scene.children.forEach(item => {
          if(item.type === "Object3D") {
            let div = this.createDom();
            div.innerHTML = item.name;
            const wp = new this.$three.Vector3();
            item.getWorldPosition(wp);
            let css3DObject = new CSS3DSprite(div);
            css3DObject.scale.set(0.03,0.03,0.03);
            item.add(css3DObject);
          }
        })        
        console.log(   e.scene.children);
        this.scene.add(e.scene);

        this.renderFun();
      })
      // 创建相机对象
      this.camera = new this.$three.PerspectiveCamera(60,1,0.01,2000);
      this.camera.position.set(3,2,2);
      this.camera.lookAt(0,0,0);
      // 创建WebGL渲染器对象
      this.renderer = new this.$three.WebGLRenderer();
      // 设置渲染器尺寸
      this.renderer.setSize(1500,1000);
      this.renderer.render(this.scene, this.camera);
      window.document.getElementById("threejs").appendChild(this.renderer.domElement);
      
      
      this.css3DRenderer = new CSS3DRenderer();
      this.css3DRenderer.setSize(1500,1000);
      this.css3DRenderer.render(this.scene, this.camera);
      this.css3DRenderer.domElement.style.position = 'absolute';
      this.css3DRenderer.domElement.style.top = 0;
      this.css3DRenderer.domElement.style.pointerEvents = 'none';

      window.document.getElementById("threejs").appendChild(this.css3DRenderer.domElement);


      const controls = new OrbitControls(this.camera, this.renderer.domElement);
      controls.addEventListener("change", () => {
        this.renderer.render(this.scene, this.camera);
      });
    },
    createDom() {
      let dom = document.createElement("div");
      dom.style.padding = "5px 10px";
      dom.style.border = "1px solid skyblue";
      dom.style.borderRadius = '5px';
      dom.style.height = '20px';
      dom.style.pointerEvents = 'none';
      return dom;
    },
    renderFun() {
      this.renderer.render(this.scene, this.camera);
      this.css3DRenderer.render(this.scene, this.camera);
      requestAnimationFrame(this.renderFun); // 一定要设置这一句，否则，不渲染
    },
  },
};
</script>
//
<style lang="less" scoped>
.box-card-left {
  display: flex;
  align-items: flex-start;
  flex-direction: row;
  position: relative;
  width: 100%;

  .box-right {
  img{
    width:500px;
    user-select: none;
  }
  }
}
</style>

代码007普通

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