three实现三维血色万圣节夜晚乌鸦群集飞翔动画效果代码-html代码-BFW代码库

three实现三维血色万圣节夜晚乌鸦群集飞翔动画效果代码

代码语言：html

所属分类：三维

代码描述：three实现三维血色万圣节夜晚乌鸦群集飞翔动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">
  

  
  
  
<style>
body {
  margin: 0;
  overflow: hidden;
  background: url("//repo.bfw.wiki/bfwrepo/image/63495b36ed222.png");
  background-size: cover;
  background-position: 20% 30%;
}
body:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(transparent 60%, black 120%);
  pointer-events: none;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.3);
}
</style>



</head>

<body  >
  
 
  
      <script  type="module">
import * as THREE from "//repo.bfw.wiki/bfwrepo/js/module/three/build/three.module.js";
import { OrbitControls } from "//repo.bfw.wiki/bfwrepo/js/module/three/examples/jsm/controls/OrbitControls.js";
import { OBJLoader } from "//repo.bfw.wiki/bfwrepo/js/module/three/examples/jsm/loaders/OBJLoader.js";
import { Noise } from "//repo.bfw.wiki/bfwrepo/js/module/noisejs.js";

console.clear();

let maxSpeed = 0.2;
let maxForce = 0.1;
const perceptionRadius = 8;
let sceneRadius = 100;

const noiseX = new Noise(Math.random());
const noiseY = new Noise(Math.random());
const noiseZ = new Noise(Math.random());

/* SETUP */
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(
75,
window.innerWidth / window.innerHeight,
0.1,
1000);

camera.position.z = 50;

const renderer = new THREE.WebGLRenderer({
  antialias: true,
  alpha: true });

renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

/* CONTROLS */
const controls = new OrbitControls(camera, renderer.domElement);

const ambientLight = new THREE.AmbientLight(0x000000);
scene.add(ambientLight);

const light1 = new THREE.PointLight(0xffffff, 1, 0);
light1.position.set(0, 200, 0);
scene.add(light1);

const light2 = new THREE.PointLight(0xffffff, 1, 0);
light2.position.set(100, 200, 100);
scene.add(light2);

const light3 = new THREE.PointLight(0xffffff, 1, 0);
light3.position.set(-100, -200, -100);
scene.add(light3);
/* BASIC BOX */

class Bat {
  constructor(mesh) {
    this.randFactor = Math.random() * 2;
    let scale = Math.random() * 0.5 + 0.3;
    this.scale = new THREE.Vector3(scale, scale, scale);
    this.position = new THREE.Vector3().random().subScalar(0.5).multiplyScalar(80);
    this.velocity = new THREE.Vector3().random().subScalar(0.5);
    this.velocity.setLength(Math.random() * 2 + 2);
    this.acceleration = new THREE.Vector3();
  }

  align() {

    return alignment;
  }

  separation() {

    return separation;
  }

  cohesion() {

    return cohesion;
  }


  walls() {
    if (this.position.x < -sceneRadius) {
      this.position.x = sceneRadius;
    } else if (this.position.x > sceneRadius) {
      this.position.x = -sceneRadius;
    } else if (this.position.y < -sceneRadius) {
      this.position.y = sceneRadius;
    } else if (this.position.y > sceneRadius) {
      this.position.y = -sceneRadius;
    } else if (this.position.z < -sceneRadius) {
      this.position.z = sceneRadius;
    } else if (this.position.z > sceneRadius) {
      this.position.z = -sceneRadius;
    }
  }

  flock() {
    let alignment = new THREE.Vector3();
    let c.........完整代码请登录后点击上方下载按钮下载查看