【html】圣诞节限定圣诞树

桃扇骨 2024-04-20 06:38 55阅读 0赞

> **圣诞节限定圣诞树?**
> 
> --------------------
> 
>  *  **博客主页：**[一起去看日落吗][Link 1]
>  *  **分享给大家一句话：** 年末将至，那我在这里祝你岁岁平安???。
> 
> --------------------
> 
> ![在这里插入图片描述][0c3f31bc6bb5460689d5e339f5299830.jpeg_pic_center]

### ? ###

![在这里插入图片描述][45b98feb99d3405ea55b9b54c898954f.png]

#### 目录 ####

*   *  ?
 *  ? 前言
 *  ?1. index.html
 *  ?2. scrip.js
 *  ?3. style.css

## ? 前言 ##

这是用html语言实现的一颗圣诞树，快点去实现你的专属圣诞树吧

## ?1. index.html ##

<!DOCTYPE html>
    <html lang="en" >
    <head>
      <meta charset="UTF-8">
      <title>圣诞树-Byih</title>
      <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
    <link rel="stylesheet" href="./style.css">
    
    </head>
    <body>
    
    <script src="https://cdn.jsdelivr.net/npm/three@0.115.0/build/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/EffectComposer.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/RenderPass.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/ShaderPass.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/shaders/CopyShader.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/shaders/LuminosityHighPassShader.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/UnrealBloomPass.js"></script>
    
    <div id="overlay">
    	
    	<h1>Merry christmas</h1>
      <ul>
        <li class="title">Select Music</li>
        <li>
          <button class="btn" id="btnA" type="button">
            Snowflakes Falling Down by Simon Panrucker
          </button>
        </li>
        <li><button class="btn" id="btnB" type="button">This Christmas by Dott</button></li>
        <li><button class="btn" id="btnC" type="button">No room at the inn by TRG Banks</button></li>
        <li><button class="btn" id="btnD" type="button">Jingle Bell Swing by Mark Smeby</button></li>
        <li class="separator">OR</li>
        <li>
          <input type="file" id="upload" hidden />
          <label for="upload">Upload File</label>
        </li>
      </ul>
    </div>
    
      <script  src="./script.js"></script>
    
    
    </body>
    </html>

--------------------

## ?2. scrip.js ##

const {
         PI, sin, cos } = Math;
    const TAU = 2 * PI;
    
    const map = (value, sMin, sMax, dMin, dMax) => {
        
      return dMin + ((value - sMin) / (sMax - sMin)) * (dMax - dMin);
    };
    
    const range = (n, m = 0) =>
      Array(n)
        .fill(m)
        .map((i, j) => i + j);
    
    const rand = (max, min = 0) => min + Math.random() * (max - min);
    const randInt = (max, min = 0) => Math.floor(min + Math.random() * (max - min));
    const randChoise = (arr) => arr[randInt(arr.length)];
    const polar = (ang, r = 1) => [r * cos(ang), r * sin(ang)];
    
    let scene, camera, renderer, analyser;
    let step = 0;
    const uniforms = {
        
      time: {
         type: "f", value: 0.0 },
      step: {
         type: "f", value: 0.0 },
    };
    const params = {
        
      exposure: 1,
      bloomStrength: 0.9,
      bloomThreshold: 0,
      bloomRadius: 0.5,
    };
    let composer;
    
    const fftSize = 2048;
    const totalPoints = 4000;
    
    const listener = new THREE.AudioListener();
    
    const audio = new THREE.Audio(listener);
    
    document.querySelector("input").addEventListener("change", uploadAudio, false);
    
    const buttons = document.querySelectorAll(".btn");
    buttons.forEach((button, index) =>
      button.addEventListener("click", () => loadAudio(index))
    );
    
    function init() {
        
      const overlay = document.getElementById("overlay");
      overlay.remove();
    
      scene = new THREE.Scene();
      renderer = new THREE.WebGLRenderer({
         antialias: true });
      renderer.setPixelRatio(window.devicePixelRatio);
      renderer.setSize(window.innerWidth, window.innerHeight);
      document.body.appendChild(renderer.domElement);
    
      camera = new THREE.PerspectiveCamera(
        60,
        window.innerWidth / window.innerHeight,
        1,
        1000
      );
      camera.position.set(-0.09397456774197047,-2.5597086635726947,24.420789670889008)
      camera.rotation.set(0.10443543723052419,-0.003827152981119352,0.0004011488708739715)
    
      const format = renderer.capabilities.isWebGL2
        ? THREE.RedFormat
        : THREE.LuminanceFormat;
    
      uniforms.tAudioData = {
        
        value: new THREE.DataTexture(analyser.data, fftSize / 2, 1, format),
      };
    
      addPlane(scene, uniforms, 3000);
      addSnow(scene, uniforms);
    
      range(10).map((i) => {
        
        addTree(scene, uniforms, totalPoints, [20, 0, -20 * i]);
        addTree(scene, uniforms, totalPoints, [-20, 0, -20 * i]);
      });
    
      const renderScene = new THREE.RenderPass(scene, camera);
    
      const bloomPass = new THREE.UnrealBloomPass(
        new THREE.Vector2(window.innerWidth, window.innerHeight),
        1.5,
        0.4,
        0.85
      );
      bloomPass.threshold = params.bloomThreshold;
      bloomPass.strength = params.bloomStrength;
      bloomPass.radius = params.bloomRadius;
    
      composer = new THREE.EffectComposer(renderer);
      composer.addPass(renderScene);
      composer.addPass(bloomPass);
    
      addListners(camera, renderer, composer);
      animate();
    }
    
    function animate(time) {
        
      analyser.getFrequencyData();
      uniforms.tAudioData.value.needsUpdate = true;
      step = (step + 1) % 1000;
      uniforms.time.value = time;
      uniforms.step.value = step;
      composer.render();
      requestAnimationFrame(animate);
    }
    
    function loadAudio(i) {
        
      document.getElementById("overlay").innerHTML =
        '<div class="text-loading">Please Wait...</div>';
      const files = [
        "https://files.freemusicarchive.org/storage-freemusicarchive-org/music/no_curator/Simon_Panrucker/Happy_Christmas_You_Guys/Simon_Panrucker_-_01_-_Snowflakes_Falling_Down.mp3",
        "https://files.freemusicarchive.org/storage-freemusicarchive-org/music/no_curator/Dott/This_Christmas/Dott_-_01_-_This_Christmas.mp3",
        "https://files.freemusicarchive.org/storage-freemusicarchive-org/music/ccCommunity/TRG_Banks/TRG_Banks_Christmas_Album/TRG_Banks_-_12_-_No_room_at_the_inn.mp3",
        "https://files.freemusicarchive.org/storage-freemusicarchive-org/music/ccCommunity/Mark_Smeby/En_attendant_Nol/Mark_Smeby_-_07_-_Jingle_Bell_Swing.mp3",
      ];
      const file = files[i];
    
      const loader = new THREE.AudioLoader();
        loader.load(file, function (buffer) {
        
          audio.setBuffer(buffer);
          audio.play();
          analyser = new THREE.AudioAnalyser(audio, fftSize);
          init();
        });
    
      
    
      
    }
    
    
    function uploadAudio(event) {
        
      document.getElementById("overlay").innerHTML =
        '<div class="text-loading">Please Wait...</div>';
      const files = event.target.files;
      const reader = new FileReader();
    
      reader.onload = function (file) {
        
        var arrayBuffer = file.target.result;
    
        listener.context.decodeAudioData(arrayBuffer, function (audioBuffer) {
        
          audio.setBuffer(audioBuffer);
          audio.play();
          analyser = new THREE.AudioAnalyser(audio, fftSize);
          init();
        });
      };
    
      reader.readAsArrayBuffer(files[0]);
    }
    
    function addTree(scene, uniforms, totalPoints, treePosition) {
        
      const vertexShader = `
      attribute float mIndex;
      varying vec3 vColor;
      varying float opacity;
      uniform sampler2D tAudioData;
    
      float norm(float value, float min, float max ){
          return (value - min) / (max - min);
      }
      float lerp(float norm, float min, float max){
      return (max - min) * norm + min;
      }
    
      float map(float value, float sourceMin, float sourceMax, float destMin, float destMax){
      return lerp(norm(value, sourceMin, sourceMax), destMin, destMax);
      }
    
    
      void main() {
          vColor = color;
          vec3 p = position;
          vec4 mvPosition = modelViewMatrix * vec4( p, 1.0 );
          float amplitude = texture2D( tAudioData, vec2( mIndex, 0.1 ) ).r;
          float amplitudeClamped = clamp(amplitude-0.4,0.0, 0.6 );
          float sizeMapped = map(amplitudeClamped, 0.0, 0.6, 1.0, 20.0);
          opacity = map(mvPosition.z , -200.0, 15.0, 0.0, 1.0);
          gl_PointSize = sizeMapped * ( 100.0 / -mvPosition.z );
          gl_Position = projectionMatrix * mvPosition;
      }
    `;
      const fragmentShader = `
      varying vec3 vColor;
      varying float opacity;
      uniform sampler2D pointTexture;
      void main() {
          gl_FragColor = vec4( vColor, opacity );
          gl_FragColor = gl_FragColor * texture2D( pointTexture, gl_PointCoord ); 
      }
      `;
      const shaderMaterial = new THREE.ShaderMaterial({
        
        uniforms: {
        
          ...uniforms,
          pointTexture: {
        
            value: new THREE.TextureLoader().load(`https://assets.codepen.io/3685267/spark1.png`),
          },
        },
        vertexShader,
        fragmentShader,
        blending: THREE.AdditiveBlending,
        depthTest: false,
        transparent: true,
        vertexColors: true,
      });
    
      const geometry = new THREE.BufferGeometry();
      const positions = [];
      const colors = [];
      const sizes = [];
      const phases = [];
      const mIndexs = [];
    
      const color = new THREE.Color();
    
      for (let i = 0; i < totalPoints; i++) {
        
        const t = Math.random();
        const y = map(t, 0, 1, -8, 10);
        const ang = map(t, 0, 1, 0, 6 * TAU) + (TAU / 2) * (i % 2);
        const [z, x] = polar(ang, map(t, 0, 1, 5, 0));
    
        const modifier = map(t, 0, 1, 1, 0);
        positions.push(x + rand(-0.3 * modifier, 0.3 * modifier));
        positions.push(y + rand(-0.3 * modifier, 0.3 * modifier));
        positions.push(z + rand(-0.3 * modifier, 0.3 * modifier));
    
        color.setHSL(map(i, 0, totalPoints, 1.0, 0.0), 1.0, 0.5);
    
        colors.push(color.r, color.g, color.b);
        phases.push(rand(1000));
        sizes.push(1);
        const mIndex = map(i, 0, totalPoints, 1.0, 0.0);
        mIndexs.push(mIndex);
      }
    
      geometry.setAttribute(
        "position",
        new THREE.Float32BufferAttribute(positions, 3).setUsage(
          THREE.DynamicDrawUsage
        )
      );
      geometry.setAttribute("color", new THREE.Float32BufferAttribute(colors, 3));
      geometry.setAttribute("size", new THREE.Float32BufferAttribute(sizes, 1));
      geometry.setAttribute("phase", new THREE.Float32BufferAttribute(phases, 1));
      geometry.setAttribute("mIndex", new THREE.Float32BufferAttribute(mIndexs, 1));
    
      const tree = new THREE.Points(geometry, shaderMaterial);
    
      const [px, py, pz] = treePosition;
    
      tree.position.x = px;
      tree.position.y = py;
      tree.position.z = pz;
    
      scene.add(tree);
    }
    
    function addSnow(scene, uniforms) {
        
      const vertexShader = `
      attribute float size;
      attribute float phase;
      attribute float phaseSecondary;
    
      varying vec3 vColor;
      varying float opacity;
    
    
      uniform float time;
      uniform float step;
    
      float norm(float value, float min, float max ){
          return (value - min) / (max - min);
      }
      float lerp(float norm, float min, float max){
          return (max - min) * norm + min;
      }
    
      float map(float value, float sourceMin, float sourceMax, float destMin, float destMax){
          return lerp(norm(value, sourceMin, sourceMax), destMin, destMax);
      }
      void main() {
          float t = time* 0.0006;
    
          vColor = color;
    
          vec3 p = position;
    
          p.y = map(mod(phase+step, 1000.0), 0.0, 1000.0, 25.0, -8.0);
    
          p.x += sin(t+phase);
          p.z += sin(t+phaseSecondary);
    
          opacity = map(p.z, -150.0, 15.0, 0.0, 1.0);
    
          vec4 mvPosition = modelViewMatrix * vec4( p, 1.0 );
    
          gl_PointSize = size * ( 100.0 / -mvPosition.z );
    
          gl_Position = projectionMatrix * mvPosition;
    
      }
      `;
    
      const fragmentShader = `
      uniform sampler2D pointTexture;
      varying vec3 vColor;
      varying float opacity;
    
      void main() {
          gl_FragColor = vec4( vColor, opacity );
          gl_FragColor = gl_FragColor * texture2D( pointTexture, gl_PointCoord ); 
      }
      `;
      function createSnowSet(sprite) {
        
        const totalPoints = 300;
        const shaderMaterial = new THREE.ShaderMaterial({
        
          uniforms: {
        
            ...uniforms,
            pointTexture: {
        
              value: new THREE.TextureLoader().load(sprite),
            },
          },
          vertexShader,
          fragmentShader,
          blending: THREE.AdditiveBlending,
          depthTest: false,
          transparent: true,
          vertexColors: true,
        });
    
        const geometry = new THREE.BufferGeometry();
        const positions = [];
        const colors = [];
        const sizes = [];
        const phases = [];
        const phaseSecondaries = [];
    
        const color = new THREE.Color();
    
        for (let i = 0; i < totalPoints; i++) {
        
          const [x, y, z] = [rand(25, -25), 0, rand(15, -150)];
          positions.push(x);
          positions.push(y);
          positions.push(z);
    
          color.set(randChoise(["#f1d4d4", "#f1f6f9", "#eeeeee", "#f1f1e8"]));
    
          colors.push(color.r, color.g, color.b);
          phases.push(rand(1000));
          phaseSecondaries.push(rand(1000));
          sizes.push(rand(4, 2));
        }
    
        geometry.setAttribute(
          "position",
          new THREE.Float32BufferAttribute(positions, 3)
        );
        geometry.setAttribute("color", new THREE.Float32BufferAttribute(colors, 3));
        geometry.setAttribute("size", new THREE.Float32BufferAttribute(sizes, 1));
        geometry.setAttribute("phase", new THREE.Float32BufferAttribute(phases, 1));
        geometry.setAttribute(
          "phaseSecondary",
          new THREE.Float32BufferAttribute(phaseSecondaries, 1)
        );
    
        const mesh = new THREE.Points(geometry, shaderMaterial);
    
        scene.add(mesh);
      }
      const sprites = [
        "https://assets.codepen.io/3685267/snowflake1.png",
        "https://assets.codepen.io/3685267/snowflake2.png",
        "https://assets.codepen.io/3685267/snowflake3.png",
        "https://assets.codepen.io/3685267/snowflake4.png",
        "https://assets.codepen.io/3685267/snowflake5.png",
      ];
      sprites.forEach((sprite) => {
        
        createSnowSet(sprite);
      });
    }
    
    function addPlane(scene, uniforms, totalPoints) {
        
      const vertexShader = `
      attribute float size;
      attribute vec3 customColor;
      varying vec3 vColor;
    
      void main() {
          vColor = customColor;
          vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
          gl_PointSize = size * ( 300.0 / -mvPosition.z );
          gl_Position = projectionMatrix * mvPosition;
    
      }
      `;
      const fragmentShader = `
      uniform vec3 color;
      uniform sampler2D pointTexture;
      varying vec3 vColor;
    
      void main() {
          gl_FragColor = vec4( vColor, 1.0 );
          gl_FragColor = gl_FragColor * texture2D( pointTexture, gl_PointCoord );
    
      }
      `;
      const shaderMaterial = new THREE.ShaderMaterial({
        
        uniforms: {
        
          ...uniforms,
          pointTexture: {
        
            value: new THREE.TextureLoader().load(`https://assets.codepen.io/3685267/spark1.png`),
          },
        },
        vertexShader,
        fragmentShader,
        blending: THREE.AdditiveBlending,
        depthTest: false,
        transparent: true,
        vertexColors: true,
      });
    
      const geometry = new THREE.BufferGeometry();
      const positions = [];
      const colors = [];
      const sizes = [];
    
      const color = new THREE.Color();
    
      for (let i = 0; i < totalPoints; i++) {
        
        const [x, y, z] = [rand(-25, 25), 0, rand(-150, 15)];
        positions.push(x);
        positions.push(y);
        positions.push(z);
    
        color.set(randChoise(["#93abd3", "#f2f4c0", "#9ddfd3"]));
    
        colors.push(color.r, color.g, color.b);
        sizes.push(1);
      }
    
      geometry.setAttribute(
        "position",
        new THREE.Float32BufferAttribute(positions, 3).setUsage(
          THREE.DynamicDrawUsage
        )
      );
      geometry.setAttribute(
        "customColor",
        new THREE.Float32BufferAttribute(colors, 3)
      );
      geometry.setAttribute("size", new THREE.Float32BufferAttribute(sizes, 1));
    
      const plane = new THREE.Points(geometry, shaderMaterial);
    
      plane.position.y = -8;
      scene.add(plane);
    }
    
    function addListners(camera, renderer, composer) {
        
      document.addEventListener("keydown", (e) => {
        
        const {
         x, y, z } = camera.position;
        console.log(`camera.position.set(${
          x},${
          y},${
          z})`);
        const {
         x: a, y: b, z: c } = camera.rotation;
        console.log(`camera.rotation.set(${
          a},${
          b},${
          c})`);
      });
    
      window.addEventListener(
        "resize",
        () => {
        
          const width = window.innerWidth;
          const height = window.innerHeight;
    
          camera.aspect = width / height;
          camera.updateProjectionMatrix();
    
          renderer.setSize(width, height);
          composer.setSize(width, height);
        },
        false
      );
    }

--------------------

## ?3. style.css ##

* {
        
      box-sizing: border-box;
    }
    
    body {
        
      margin: 0;
      height: 100vh;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #161616;
      color: #c5a880;
      font-family: sans-serif;
    }
    
    label {
        
      display: inline-block;
      background-color: #161616;
      padding: 16px;
      border-radius: 0.3rem;
      cursor: pointer;
      margin-top: 1rem;
      width: 300px;
      border-radius: 10px;
      border: 1px solid #c5a880;
      text-align: center;
    }
    
    ul {
        
      list-style-type: none;
      padding: 0;
      margin: 0;
    }
    
    .btn {
        
      background-color: #161616;
      border-radius: 10px;
      color: #c5a880;
      border: 1px solid #c5a880;
      padding: 16px;
      width: 300px;
      margin-bottom: 16px;
      line-height: 1.5;
      cursor: pointer;
    }
    .separator {
        
      font-weight: bold;
      text-align: center;
      width: 300px;
      margin: 16px 0px;
      color: #a07676;
    }
    
    .title {
        
      color: #a07676;
      font-weight: bold;
      font-size: 1.25rem;
      margin-bottom: 16px;
    }
    
    .text-loading {
        
      font-size: 2rem;
    }

[Link 1]: https://blog.csdn.net/m0_60338933?type=blog
[0c3f31bc6bb5460689d5e339f5299830.jpeg_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/20/a0b1e90c9b9d4a9294269f0458ef1793.jpeg
[45b98feb99d3405ea55b9b54c898954f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/20/cfc5b85f89e245049045a3f9ab97565d.png