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vue可以实现推镜头

2026-02-24 17:22:01VUE

Vue 实现推镜头效果的方法

推镜头（Dolly Zoom）是一种通过同步调整相机位置和焦距实现的视觉效果，常用于影视或3D场景中。在Vue中可以通过以下方式模拟类似效果：

结合CSS与JavaScript实现基础推镜头

通过动态调整元素的transform: scale()和perspective属性模拟推近效果：

<template>
  <div class="scene" ref="scene">
    <div class="object" :style="zoomStyle"></div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      scale: 1,
      perspective: 1000
    }
  },
  computed: {
    zoomStyle() {
      return {
        transform: `scale(${this.scale})`,
        perspective: `${this.perspective}px`
      }
    }
  },
  methods: {
    zoomIn() {
      this.scale += 0.1;
      this.perspective -= 50;
    }
  }
}
</script>

<style>
.scene {
  width: 100vw;
  height: 100vh;
  perspective-origin: center;
}
.object {
  width: 200px;
  height: 200px;
  background: #42b983;
  transition: all 0.5s ease;
}
</style>

使用Three.js实现3D推镜头

对于需要真实3D效果的情况，可结合Three.js实现：

import * as THREE from 'three';

export default {
  mounted() {
    const scene = new THREE.Scene();
    const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
    const renderer = new THREE.WebGLRenderer();

    // 初始化场景
    renderer.setSize(window.innerWidth, window.innerHeight);
    this.$refs.container.appendChild(renderer.domElement);

    // 添加物体
    const geometry = new THREE.BoxGeometry();
    const material = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
    const cube = new THREE.Mesh(geometry, material);
    scene.add(cube);

    // 推镜头动画
    let fov = 75;
    function animate() {
      requestAnimationFrame(animate);
      fov -= 0.1; // 减小视野
      camera.position.z -= 0.05; // 移动相机
      camera.fov = fov;
      camera.updateProjectionMatrix();
      renderer.render(scene, camera);
    }
    animate();
  }
}

使用GSAP实现平滑过渡

通过动画库实现更流畅的效果：

import gsap from 'gsap';

methods: {
  startDollyZoom() {
    gsap.to(this.$refs.object, {
      duration: 2,
      scale: 2,
      ease: "power2.inOut"
    });
    gsap.to(this.$refs.scene, {
      duration: 2,
      perspective: 500,
      ease: "power2.inOut"
    });
  }
}