three+cannon实现三维小球搅拌重力模拟效果代码-html代码-BFW代码库

代码语言：html
所属分类：三维
代码描述：three+cannon实现三维小球搅拌重力模拟效果代码
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>
html {
  font-family: "Ropa Sans", Arial, sans-serif;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

*,
*::after,
*::before {
  box-sizing: border-box;
}

body {
  padding: 0;
  margin: 0;
  background-color: #333333;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  font-size: 22px;
  color: #fff;
  text-decoration: none;
  padding: 10px;
  transition: background-color 0.3s, color 0.3s;
}

a:hover {
  color: #390fff;
  background-color: #fff;
}

section {
  margin: 10px;
  position: absolute;
  z-index: 1;
  bottom: 0;
  width: 100%;
}

#stats {
  position: absolute;
}
</style>

 
</head>

<body >
  <div id="stats"></div>



<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/Stats-16.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.144.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/OrbitControls.144.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/TransformControls.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/tweakpane.3.02.js"></script>

      <script type="module">

import * as CANNON from "//repo.bfw.wiki/bfwrepo/js/module/cannon-es.0.20.0.js";

const hexToRgb = hex => {
  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);

  return result ?
  {
    r: parseInt(result[1], 16) / 255,
    g: parseInt(result[2], 16) / 255,
    b: parseInt(result[3], 16) / 255 } :

  null;
};

const rgbToHex = (s) =>
s.match(/[0-9]+/g).reduce((a, b) => a + (b | 256).toString(16).slice(1), "#");

class App {
  constructor() {
    this.settings = {
      velocity: 0.015,
      width: window.innerWidth,
      height: window.innerHeight,
      debug: false,
      colors: {
        background: rgbToHex(
        window.getComputedStyle(document.body).backgroundColor),

        floor: rgbToHex(window.getComputedStyle(document.body).backgroundColor),
        box: "#390fff",
        spheres: {
          left: "#390fff",
          right: "#ffffff" },

        ambientLight: "#ffffff",
        directionalLight: "#ffffff",
        pointLight: "#390fff" } };


  }

  init() {
    this.setup();
    this.createScene();
    this.createCamera();
    this.addCameraControls();
    this.addAmbientLight();
    this.addDirectionalLight();
    this.addPhysicsWorld();
    this.addPointLight();
    this.addFloor();
    this.addBox();
    this.addPropeller();
    this.addInnerBoudaries();
    this.addWindowListeners();
    this.addGuiControls();
    this.addInitialSpheres();
    this.addStatsMonitor();
    this.animate();
  }

  addGuiControls() {
    this.pane = new Tweakpane.Pane();
    this.guiSettings = this.pane.addFolder({
      title: "Colors",
      expanded: false });


    this.guiSettings.
    addInput(this.settings.colors, "background").
    on("change", evt => {
      this.floor.material.color = hexToRgb(evt.value);
      document.body.style.backgroundColor = evt.value;
      this.scene.background = new THREE.Color(evt.value);
    });

    this.guiSettings.
    addInput(this.settings.colors.spheres, "left").
    on("change", evt => {
      this.spheres.materials.left.color = hexToRgb(evt.value);
    });

    this.guiSettings.
    addInput(this.settings.colors.spheres, "right").
    on("change", evt => {
      this.spheres.materials.right.color = hexToRgb(evt.value);
    });

    this.guiSettings.
    addInput(this.settings.colors, "box").
    on("change", evt => {
      this.meshes.box.material.color = hexToRgb(evt.value);
    });

    // control lights
    this.guiSettings = this.pane.addFolder({
      title: "Directional Light",
      expanded: false });


    this.guiSettings.
    addInput(this.directionalLight.position, "x", {
      min: -100,
      max: 100,
      step: 0.1 }).

    on("change", ({ value }) => {
      this.directionalLight.position.x = value;
    });

    this.guiSettings.
    addInput(this.directionalLight.position, "y", {
      min: -100,
      max: 100,
      step: 0.1 }).

    on("change", ({ value }) => {
      this.directionalLight.position.y = value;
    });

    this.guiSettings.
    addInput(this.directionalLight.position, "z", {
      min: -100,
      max: 100,
      step: 0.1 }).

    on("change", ({ value }) => {
      this.directionalLight.position.z = value;
    });

    this.guiSettings.
    addInput(this.settings.colors, "directionalLight").
    on("change", evt => {
      this.directionalLight.color = hexToRgb(evt.value);
    });

    // control lights
    this.guiSettings = this.pane.addFolder({
      title: "Point Light",
      expanded: false });


    this.guiSettings.
    addInput(this.pointLight.position, "x", {
      min: -100,
      max: 100,
      step: 0.1 }).

    on("change", ({ value }) => {
      this.pointLight.position.x = value;
    });

    this.guiSettings.
    addInput(this.pointLight.position, "y", {
      min: -100,
      max: 100,
      step: 0.1 }).

    on("change", ({ value }) => {
      this.pointLight.position.y = value;
    });

    this.guiSettings.
    addInput(this.pointLight.position, "z", {
      min: -100,
      max: 100,
      step: 0.1 }).

    on("change", ({ value }) => {
      this.pointLight.position.z = value;
    });

    this.guiSettings.
    addInput(this.settings.colors, "pointLight").
    on("change", evt => {
      this.pointLight.color = hexToRgb(evt.value);
    });
  }

  addPhysicsWorld() {
    this.world = new CANNON.World();
    this.world.gravity.set(0, -5, 20);
    this.world.broadphase = new CANNON.NaiveBroadphase();
    this.world.defaultContactMaterial.contactEquationStiffness = 5e7;
    this.world.defaultContactMaterial.contactEquationRelaxation = 3;
    this.world.quatNormalizeFast = true;
    this.world.allowSleep = true;
  }

  setup() {
    this.spheres = {
      config: {
        radius: 0.15,
        width: 32,
        height: 32 },

      materials: {
        base: new THREE.MeshBasicMaterial({ color: "#ff00ff" }),
        left: new THREE.MeshPhysicalMaterial({
          color: this.settings.colors.spheres.left,
          metalness: 0.1,
          emissive: 0x0,
          roughness: 0.1 }),

        right: new THREE.MeshPhysicalMaterial({
          color: this.settings.colors.spheres.right,
          metalness: 0.1,
          emissive: 0x0,
          roughness: 0.1 }) } };




    this.meshes = {
      container: new THREE.Object3D(),
      spheres: [],
      propeller: null,
      material: new THREE.MeshStandardMaterial({
        color: "#ffffff",
        metalness: 0,
        emissive: 0x0,
        roughness: 1 }),

      sphere: {
        baseMaterial: new THREE.MeshBasicMaterial({ color: "#ff00ff" }),
        geometry: new THREE.SphereGeometry(this.spheres.config.radius, 16, 16),
        geometryHalf: new THREE.SphereGeometry(
        this.spheres.config.radius,
        16,
        16,
        0,
        3.15) } };



  }

  createScene() {
    this.scene = new THREE.Scene();
    this.scene.background = new THREE.Color(this.settings.colors.background);
    this.renderer = new THREE.WebGLRenderer({ antialias: true });
    this.renderer.shadowMap.enabled = true;
    this.renderer.shadowMap.type = THREE.PCFSoftShadowMap;

    this.renderer.setSize(this.settings.width, this.settings.height);

    document.body.appendChild(this.renderer.domElement);
  }

  createCamera() {
    this.camera = new THREE.PerspectiveCamera(
    20,
    this.settings.width / this.settings.height,
    1,
    1000);

    this.camera.position.set(0, 30, 0);

    this.scene.add(this.camera);
  }

  addCameraControls() {
    this.orbitControl = new THREE.OrbitControls(
    this.camera,
    this.renderer.domElement);

    this.orbitControl.enableDamping = true;
    this.orbitControl.dampingFactor = 0.02;
    this.orbitControl.minPolarAngle = THREE.MathUtils.degToRad(0);
    this.orbitControl.maxPolarAngle = THREE.MathUtils.degToRad(20);
    this.orbitControl.minAzimuthAngle = THREE.MathUtils.degToRad(0);
    this.orbitControl.maxAzimuthAngle = THREE.MathUtils.degToRad(0);
    this.orbitControl.enablePan = false;
    this.orbitControl.enableRotate = true;
    this.orbitControl.enableZoom = false;
    this.orbitControl.saveState();

    document.body.style.cursor = "-moz-grabg";
    document.body.style.cursor = "-webkit-grab";

    this.orbitControl.addEventListener("start", () => {
      requestAnimationFrame(() => {
        document.body.style.cursor = "-moz-grabbing";
        document.body.style.cursor = "-webkit-grabbing";
      });
    });

    this.orbitControl.addEventListener("end", () => {
      requestAnimationFrame(() => {
        document.body.style.cursor = "-moz-grab";
        document.body.style.cursor = "-webkit-grab";
      });
    });
  }

  addAmbientLight() {
    const light = new THREE.AmbientLight(
    { color: this.settings.colors.ambientLight },
    0.5);


    this.scene.add(light);
  }

  addDirectionalLight() {
    const target = new THREE.Object3D();
    this.directionalLight = new THREE.DirectionalLight(
    this.settings.colors.directionalLight,
    1);

    this.directionalLight.castShadow = true;
    this.directionalLight.target = target;
    this.directionalLight.shadow.mapSize.width = 2048;
    this.directionalLight.shadow.mapSize.height = 2048;
    this.directionalLight.shadow.camera.far = 1000;
    this.directionalLight.shadow.camera.near = -100;
    this.directionalLight.shadow.camera.zoom = 1;

    this.directionalLight.position.s.........完整代码请登录后点击上方下载按钮下载查看