HTML圣诞树代码(动态音效)

桃扇骨 2024-04-27 15:31 99阅读 0赞

?今日学习目标：  
?HTML圣诞树代码  
✅创作者：林在闪闪发光  
⏰预计时间：5分钟  
?个人主页：[林在闪闪发光的个人主页][Link 1]

![b267ca92c76b4d25a2dd2f26dca92090.png][]

> <!DOCTYPE html>  
> <html lang="en">  
>   
> <head>  
> <meta charset="UTF-8">  
>   
> <title>圣诞树</title>  
>   
> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">  
>   
> <style>  
> \* \{  
> 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;  
> \}  
> </style>  
>   
> <script>  
> window.console = window.console || function (t) \{ \};  
> </script>  
>   
>   
>   
> <script>  
> if (document.location.search.match(/type=embed/gi)) \{  
> window.parent.postMessage("resize", "\*");  
> \}  
> </script>  
>   
>   
> </head>  
>   
> <body translate="no">  
> <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">  
> <ul>  
> <li class="title">请选择音乐</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">或者</li>  
> <li>  
> <input type="file" id="upload" hidden />  
> <label for="upload">Upload File</label>  
> </li>  
> </ul>  
> </div>  
>   
> <script id="rendered-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">正在下载音乐，请稍等...</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">请稍等...</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);  
>   
> \}  
> </script>  
>   
> </body>  
>   
> </html>

[Link 1]: https://blog.csdn.net/weixin_68829137?type=blog
[b267ca92c76b4d25a2dd2f26dca92090.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/27/badfafa30dc54ccba22a1001ba6a78bd.png