vue中利用three.js实现全景图的完整示例

粗暴一点,直接上代码:

第一步:

通过指令下载three.js

npm install three -S

第二步:

在组件中引用

import * as THREE from 'three'

第三步:

html部分

<div id="container"></div>

js部分

<script>
  import * as THREE from 'three';
  var camera;
  var renderer;
  var scene;
  export default {
    name: 'panorama',
    data() {
      return {
        bigImg: require("../../../../../images/项目案例/001.jpg"),//全景图图片路径
      }
    },
    mounted() {
      // 调用全景图函数
      this.$nextTick(() => {
        this.init();
        this.animate();
      })
    },
    methods: {
      // 全景图配置函数---------------
      init() {
        var container = document.getElementById('container');
        // 创建渲染器
        renderer = new THREE.WebGLRenderer();
        renderer.setPixelRatio(window.devicePixelRatio);
        // 设置画布的宽高
        renderer.setSize(window.innerWidth, window.innerHeight);
        // 判断容器中子元素的长度
        let childs = container.childNodes;
        if (container.childNodes.length > 0) {
          container.removeChild(childs[0]);
          container.appendChild(renderer.domElement);
        } else {
          container.appendChild(renderer.domElement);
        }
        //   container.appendChild(renderer.domElement);
        // 创建场景
        scene = new THREE.Scene();
        // 创建相机
        camera = new THREE.PerspectiveCamera(90, window.innerWidth / window.innerHeight, 0.1, 100);
        camera.position.set(0, 0, 0);
        var material = new THREE.MeshBasicMaterial();//材质
        var texture = new THREE.TextureLoader().load(this.bigImg);
        material.map = texture;
        var skyBox = new THREE.Mesh(
          new THREE.SphereBufferGeometry(100, 100, 100),
          material
        );
        skyBox.geometry.scale(1, 1, -1);
        scene.add(skyBox);
        window.addEventListener('resize', this.onWindowResize, false);
        var bMouseDown = false;
        var x = -1;
        var y = -1;
        // 添加鼠标事件
        container.onmousedown = function (event) {
          event.preventDefault();//取消默认事件
          x = event.clientX;
          y = event.clientY;
          bMouseDown = true;
        }
        container.onmouseup = function (event) {
          event.preventDefault();
          bMouseDown = false;
        }
        container.onmousemove = function (event) {
          event.preventDefault();
          if (bMouseDown) {
            skyBox.rotation.y += -0.005 * (event.clientX - x);
            skyBox.rotation.x += -0.005 * (event.clientY - y);
            if (skyBox.rotation.x > Math.PI / 2) {
              skyBox.rotation.x = Math.PI / 2
            }
            if (skyBox.rotation.x < -Math.PI / 2) {
              skyBox.rotation.x = -Math.PI / 2
            }
            x = event.clientX;
            y = event.clientY;
          }
        }
        container.onmousewheel = function (event) {
          event.preventDefault();
          if (event.wheelDelta != 0) {
            camera.fov += event.wheelDelta > 0 ? 1 : -1;
            if (camera.fov > 150) {
              camera.fov = 150;
            }
            else if (camera.fov < 30) {
              camera.fov = 30;
            }
            camera.updateProjectionMatrix();
          }
        }
      },
      onWindowResize() {
        // 窗口缩放的时候,保证场景也跟着一起缩放
        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();
        renderer.setSize(window.innerWidth, window.innerHeight);
      },
      animate() {
        requestAnimationFrame(this.animate);
        renderer.render(scene, camera);
      }
    },
  }
</script>

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