three实现三维小兔子月球上插旗子飘动动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：三维

代码描述：three实现三维小兔子月球上插旗子飘动动画效果代码

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>
    @import url("https://fonts.googleapis.com/css2?family=Asap&display=swap");
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,
body {
  background: black;
  overscroll-behavior-x: none;
  overscroll-behavior-y: none;
}
body {
  font-family: "Asap", sans-serif;
  position: relative;
  width: 100vw;
  min-height: 100vh;
  text-align: center;
  overflow-x: hidden;
  background: black;
  color: white;
}

canvas {
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
  position: fixed;
  width: 100vw;
  height: 100vh;
  top: 0;
  left: 0;
  z-index: 0;
}
main {
  position: relative;
}
section {
  position: relative;
  width: 100vw;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
</style>
</head>
<body>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/es-module-shims.1.6.2.js"></script>
<script type="importmap">
  {
    "imports": {      
      "three": "//repo.bfw.wiki/bfwrepo/js/module/three/build/159/three.module.js",
      "three/addons/": "//repo.bfw.wiki/bfwrepo/js/module/three/examples/159/jsm/"
    }
  }
</script>
<!-- partial -->
  <script type="module" >

"use strict";

import * as THREE from "three";

import { OrbitControls as e } from "three/addons/controls/OrbitControls.js";

import * as BufferGeometryUtils from "three/addons/utils/BufferGeometryUtils.js";

    import { ParametricGeometry as t } from "three/addons/geometries/ParametricGeometry.js";

import { ParametricGeometries as o } from "three/addons/geometries/ParametricGeometries.js";

!(function () {
  function s(e, t, o) {
    H.subVectors(t.position, e.position);
    const s = H.length();
    if (0 === s) return;
    const n = H.multiplyScalar(1 - o / s).multiplyScalar(0.5);
    e.position.add(n), t.position.sub(n);
  }
  function n() {
    (b.aspect = window.innerWidth / window.innerHeight),
      b.updateProjectionMatrix(),
      g.setSize(window.innerWidth, window.innerHeight);
  }
  function i(e) {
    requestAnimationFrame(i),
      (function (e) {
        T.set(100, 0, Math.sin(e / 1e3)), T.normalize(), T.multiplyScalar(300);
        const t = y.particles;
        if (a.enableWind) {
          let e;
          const o = new THREE.Vector3(),
            s = G.index,
            n = G.attributes.normal;
          for (let i = 0, a = s.count; i < a; i += 3)
            for (let a = 0; a < 3; a++)
              (e = s.getX(i + a)),
                o.fromBufferAttribute(n, e),
                R.copy(o).normalize().multiplyScalar(o.dot(T)),
                t[e].addForce(R);
        }
        for (let e = 0, o = t.length; e < o; e++) {
          const o = t[e];
          o.addForce(w), o.integrate(u);
        }
        const o = y.constraints,
          n = o.length;
        for (let e = 0; e < n; e++) {
          const t = o[e];
          s(t[0], t[1], t[2]);
        }
        for (let e = 0, o = m.length; e < o; e++) {
          let o = Math.round(m[e] * c + e);
          o > t.length && (o = t.length), o < 0 && (o = 0);
          const s = t[o];
          s.position.copy(s.original), s.previous.copy(s.original);
        }
      })(e),
      v.update(),
      (function () {
        const e = y.particles;
        for (let t = 0, o = e.length; t < o; t++) {
          const o = e[t].position;
          G.attributes.position.setXYZ(t, o.x, o.y, o.z);
        }
        (G.attributes.position.needsUpdate = !0),
          G.computeVertexNormals(),
          (A.rotation.z -= 0.001),
          g.render(S, b);
      })();
  }
  const a = {
      enableWind: !0
    },
    r = 0.97,
    l = 0.1,
    h = 25,
    c = 10,
    E =
      ((d = h * c),
      (p = 10 * h),
      function (e, t, o) {
        const s = (e - 0.5) * d,
          n = (t + 0.5) * p;
        o.set(s, n, 0);
      });
  var d, p;
  const w = new THREE.Vector3(0, -981 * 1.4, 0).multiplyScalar(l),
    u = 0.018 * 0.018;
  let m = [];
  const T = new THREE.Vector3(0, 0, 0),
    R = new THREE.Vector3(),
    H = new THREE.Vector3();
  class M {
    constructor(e, t, o, s) {
      (this.position = new THREE.Vector3()),
        (this.previous = new THREE.Vector3()),
        (this.original = new THREE.Vector3()),
        (this.a = new THREE.Vector3(0, 0, 0)),
        (this.mass = s),
        (this.invMass = 1 / s),
        (this.tmp = new THREE.Vector3()),
        (this.tmp2 = new THREE.Vector3()),
        E(e, t, this.position),
        E(e, t, this.previous),
        E(e, t, this.original);
    }
    addForce(e) {
      this.a.add(this.tmp2.copy(e).multiplyScalar(this.invMass));
    }
    integrate(e) {
      const t = this.tmp.subVectors(this.position, this.previous);
      t.multiplyScalar(r).add(this.position),
        t.add(this.a.multiplyScalar(e)),
        (this.tmp = this.previous),
        (this.previous = this.position),
        (this.position = t),
        this.a.set(0, 0, 0);
    }
  }
  const y = new (class {
    constructor(e = 10, t = 10) {
      function o(t, o) {
        return t + o * (e + 1);
      }
      (this.w = e), (this.h = t);
      const s = [],
        n = [];
      for (let o = 0; o <= t; o++)
        for (let n = 0; n <= e; n++) s.push(new M(n / e, o / t, 0, l));
      for (let i = 0; i < t; i++)
        for (let t = 0; t < e; t++)
          n.push([s[o(t, i)], s[o(t, i + 1)], h]),
            n.push([s[o(t, i)], s[o(t + 1, i)], h]);
      for (let i = e, a = 0; a < t; a++)
        n.push([s[o(i, a)], s[o(i, a + 1)], h]);
      for (let i = t, a = 0; a < e; a++)
        n.push([s[o(a, i)], s[o(a + 1, i)], h]);
      (this.particles = s), (this.constraints = n), (this.index = o);
    }
  })(c, 10);
  let f, b, S, g, v, G, x, z, C, P, V, B, A, F, L;
  m = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
  const U = new THREE.TextureLoader();
  U.load(
    "//repo.bfw.wiki/bfwrepo/image/6203b7f7cade8.png",
    function (s) {
      ((F = s).anisotropy = 16),
        (F.colorSpace = THREE.SRGBColorSpace),
        U.load(
          "//repo.bfw.wiki/bfwrepo/image/657f9d1654193.jpeg",
          function (s) {
            ((L = s).anisotropy = 16),
              (function () {
                (f = document.createElement("div")),
                  document.body.appendChild(f),
                  ((S = new THREE.Scene()).background = new THREE.Color(
                    1118481
                  )),
                  (b = new THREE.PerspectiveCamera(
                    30,
                    window.innerWidth / window.innerHeight,
                    0.1,
                    80
                  )).position.set(0, 0.5, 5),
                  S.add(new THREE.AmbientLight("white"));
                const s = new THREE.DirectionalLight("white", 2);
                let i;
                (s.position.y = 2),
                  (s.position.z = 2),
                  (s.castShadow = !0),
                  (s.shadow.mapSize.width = 1024),
                  (s.shadow.mapSize.height = 1024),
                  S.add(s),
                  (P = new THREE.MeshPhongMaterial({
                    specular: "silver",
                    shininess: 100
                  })),
                  (G = new t(o.plane(y.w, y.h), 10, 10)).center(),
                  (z = new THREE.MeshLambertMaterial({
                    map: F,
                    side: THREE.DoubleSide
                  })),
                  (B = new THREE.Mesh(G, z)).position.set(0.39, 0.12, 0),
                  B.scale.set(0.0013, 0.0013, 0.0013),
                  (B.castShadow = !0),
                  S.add(B),
                  (x = new THREE.BoxGeometry(10, 700, 10)),
                  (z = new THREE.MeshLambertMaterial()),
                  ((C = new THREE.Mesh(x, z)).position.x = -125),
                  (C.position.y = 25),
                  (C.receiveShadow = !0),
                  (C.castShadow = !0),
                  B.add(C),
                  (x = new THREE.BoxGeometry(20, 10, 20)),
                  ((C = new THREE.Me.........完整代码请登录后点击上方下载按钮下载查看