Three.js+React实现3D文字悬浮效果

import * as THREE from "three";
import { FontLoader } from "three/examples/jsm/loaders/FontLoader";
import { TextGeometry } from 'three/examples/jsm/geometries/TextGeometry';
import { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer.js';
import { RenderPass } from 'three/examples/jsm/postprocessing/RenderPass.js';
import { GlitchPass } from 'three/examples/jsm/postprocessing/GlitchPass.js';

<div className='floating_page' style={{ backgroundColor: this.state.backgroundColor }}>
  <div id="canvas"></div>
  <input className='color_pick' type="color" onChange={this.handleInputChange} value={this.state.backgroundColor} />
  <button className='pass_button' onClick={this.handleRenderChange}>特效<span className='highlight'>{this.state.renderGlithPass ? '开' : '关'}</span></button>
</div>

state = {
  backgroundColor: '#164CCA',
  renderGlithPass: !(window.navigator.userAgent.toLowerCase().indexOf('mobile') > 0)
}

background-image: linear-gradient(rgba(3, 192, 60, .3) 1px, transparent 1px), linear-gradient(90deg, rgba(3, 192, 60, .3) 1px, transparent 1px);
background-size: 1em 1em;

canvas = document.getElementById('canvas');
renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
renderer.setPixelRatio(Math.min(2, window.devicePixelRatio));
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setClearAlpha(0);
canvas.appendChild(renderer.domElement);
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, .1, 10000);
camera.position.set(-2 * 10000, 0, 780);

const material = new THREE.MeshNormalMaterial();

MeshNormalMaterial(parameters : Object)

const loader = new FontLoader();
loader.load('./fonts/helvetiker_regular.typeface.json', font => {
  textMesh.geometry = new TextGeometry('@dragonir\nfantastic\nthree.js\nart work', {
    font: font,
    size: 100,
    height: 40,
    curveSegments: 12,
    bevelEnabled: true,
    bevelThickness: 30,
    bevelSize: 8,
    bevelOffset: 1,
    bevelSegments: 12
  });
  textMesh.material = material;
  scene.add(textMesh);
});

FontLoader(manager: LoadingManager)

TextGeometry(text: String, parameters: Object)

// 批量创建模型方法
generateRandomMesh = (geometry, material, count) => {
  for (let i = 0; i < count; i  ) {
    let mesh = new THREE.Mesh(geometry, material);
    let dist = farDist / 3;
    let distDouble = dist * 2;
    // 设置随机的位置和旋转角度
    mesh.position.x = Math.random() * distDouble - dist;
    mesh.position.y = Math.random() * distDouble - dist;
    mesh.position.z = Math.random() * distDouble - dist;
    mesh.rotation.x = Math.random() * 2 * Math.PI;
    mesh.rotation.y = Math.random() * 2 * Math.PI;
    mesh.rotation.z = Math.random() * 2 * Math.PI;
    // 手动控制何时重新计算3D变换以获得更好的性能
    mesh.matrixAutoUpdate = false;
    mesh.updateMatrix();
    group.add(mesh);
  }
}
// 创建100个八面体
const octahedronGeometry = new THREE.OctahedronBufferGeometry(80);
generateRandomMesh(octahedronGeometry, material, 100);
// 创建200个圆环面
const torusGeometry = new THREE.TorusBufferGeometry(40, 25, 16, 40);
generateRandomMesh(torusGeometry, material, 200);
// 创建100个圆锥
const coneGeometry = new THREE.ConeBufferGeometry(40, 80, 80);
generateRandomMesh(coneGeometry, material, 100);
scene.add(group);

TorusBufferGeometry(radius: Float, tube: Float, radialSegments: Integer, tubularSegments: Integer, arc: Float)

ConeBufferGeometry(radius: Float, height: Float, radialSegments: Integer, heightSegments: Integer, openEnded: Boolean, thetaStart: Float, thetaLength: Float)

OctahedronBufferGeometry(radius: Float, detail: Integer)

const mouseFX = {
  windowHalfX: window.innerWidth / 2,
  windowHalfY: window.innerHeight / 2,
  coordinates: (coordX, coordY) => {
    mouseX = (coordX - mouseFX.windowHalfX) * 5;
    mouseY = (coordY - mouseFX.windowHalfY) * 5;
  },
  onMouseMove: e => { mouseFX.coordinates(e.clientX, e.clientY) },
  onTouchMove: e => { mouseFX.coordinates(e.changedTouches[0].clientX, e.changedTouches[0].clientY)}
};
document.addEventListener('mousemove', mouseFX.onMouseMove, false);
document.addEventListener('touchmove', mouseFX.onTouchMove, false);

handleInputChange = e => {
  this.setState({ backgroundColor: e.target.value });
}

composer = new EffectComposer(renderer);
composer.addPass( new RenderPass(scene, camera));
glitchPass = new GlitchPass();
composer.addPass(glitchPass);

handleRenderChange = () => {
  this.setState({ renderGlithPass: !this.state.renderGlithPass });
}

function animate() {
  requestAnimationFrame(animate);
  camera.position.x  = (mouseX - camera.position.x) * 0.05;
  camera.position.y  = (mouseY * -1 - camera.position.y) * 0.05;
  camera.lookAt(scene.position);
  // 给场景中的立方体网格和字体网格添加自转动画
  const t = Date.now() * 0.001;
  const rx = Math.sin(t * 0.7) * 0.5;
  const ry = Math.sin(t * 0.3) * 0.5;
  const rz = Math.sin(t * 0.2) * 0.5;
  group.rotation.x = rx;
  group.rotation.y = ry;
  group.rotation.z = rz;
  textMesh.rotation.x = rx;
  textMesh.rotation.y = ry;
  textMesh.rotation.z = rx;
  renderer.render(scene, camera);
  // 更新后期渲染通道
  composer.render();
}

window.addEventListener('resize', () => {
  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize(window.innerWidth, window.innerHeight);
  composer.setSize( window.innerWidth, window.innerHeight );
}, false);

window.addEventListener('dblclick', () => {
  let fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement;
  if (!fullscreenElement) {
    if (canvas.requestFullscreen) {
      canvas.requestFullscreen();
    } else if (canvas.webkitRequestFullscreen) {
      canvas.webkitRequestFullscreen();
    }
    console.log('进入全屏')
  } else {
    if (document.exitFullscreen) {
      document.exitFullscreen();
    } else if (document.webkitExitFullscreen) {
      document.webkitExitFullscreen();
    }
    console.log('退出全屏')
  }
})

var Promise = Element.requestFullscreen(options);

document.exitFullscreen();