three.js : tweenjs创建threejs动画

效果：

代码

<template>
  <div>
    <el-container>
      <el-main>
        <div class="box-card-left">
          <div id="threejs" style="border: 1px solid red"></div>   <div class="box-right">
            <el-button type="primary" @click="start">开始</el-button>
          </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 TWEEN from '@tweenjs/tween.js';

export default {
  data() {
    return {
      value1: 0,
      percentage: 20,
      name: "",
      scene: null,
      camera: null,
      renderer: null,
      effectComposer: null,
      mesh: null,
      geometry: null,
      group: null,
      material: null,
      texture: null,
      position: null,
      outlinePass: null,
      clock: null,
      mixer: null,
      clip_action: null,
      request_animation_frame: 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.$three.Scene();
      // 创建立方缓存几何体对象
      this.geometry = new this.$three.BoxGeometry(50,50,50);
      // 创建材质对象
      this.material = new this.$three.MeshBasicMaterial({
        color: 0xff11aa
      });
      // 创建网格模型
      this.mesh = new this.$three.Mesh(this.geometry, this.material);
      this.scene.add(this.mesh);
      // 创建辅助坐标轴对象
      const axesHelper = new this.$three.AxesHelper(100);
      this.scene.add(axesHelper);
      // 创建相机对象
      this.camera = new this.$three.PerspectiveCamera(60,1,0.01,3000);
      this.camera.position.set(300,300,200);
      this.camera.lookAt(0,0,0,);
      // 创建渲染器对象
      this.renderer = new this.$three.WebGLRenderer();
      this.renderer.setSize(1000,800);
      this.renderer.render(this.scene, this.camera);
      window.document.getElementById("threejs").appendChild(this.renderer.domElement);
      // 创建相机空间轨道控制器对象
      const controls = new OrbitControls(this.camera, this.renderer.domElement);
      controls.addEventListener("change", () => {
        this.renderer.render(this.scene, this.camera);
      })
    },
    start() {
      // 创建tweenjs对象
      const tween0 = new TWEEN.Tween(this.mesh.position);
      tween0.to({x:100, y: 0}, 2000);
      tween0.start();
      const tween2 = new TWEEN.Tween(this.mesh.scale);
      tween2.to({x:2, y: 2}, 2000).repeat(1);
      tween2.start();
      const tween3 = new TWEEN.Tween(this.mesh.material.color);
      tween3.to({r:0.2, g: 0.6}, 2000).repeat(1);
      tween3.start();
      this.loop();
    },
    loop() {
      this.renderer.render(this.scene, this.camera);
      TWEEN.update();
      window.requestAnimationFrame(this.loop);
    }
  },
};
</script>
//
<style lang="less" scoped>
.box-card-left {
  display: flex;
  align-items: flex-start;
  flex-direction: row;

  width: 100%;

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

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