圣诞树的源码.html资源-CSDN文库

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【圣诞树的源码.html】这个标题提示我们，我们将探讨的是一个使用HTML语言编写的圣诞树的源代码。HTML（HyperText Markup Language）是用于创建网页的标准标记语言，它可以描述网页的结构和内容。在这个场景中，开发者可能利用HTML元素和属性来模拟一棵圣诞树的视觉效果。描述中提到的“圣诞树”是圣诞节的一个标志性元素，通常由灯饰、装饰品装点的常青树来象征。而在数字化的世界里，程序员通过编程技术将这种传统元素转化为数字形式，这正是HTML代码实现的圣诞树。它可能是通过字符图形、CSS样式或者JavaScript交互来创建的。在HTML中创建圣诞树，主要会用到以下知识点： 1. **HTML基本结构**：一个简单的HTML文档通常包括`<!DOCTYPE html>`声明，`<html>`元素，`<head>`元素和`<body>`元素。圣诞树的代码可能在`<body>`部分编写。 2. **文本元素**：HTML通过不同的标签如`<p>`（段落）、`<br>`（换行）等来组织文本。圣诞树的形状可能会由一系列有序或无序的列表`<ol>`、`<ul>`或`<li>`元素构成。 3. **CSS样式**：为了给圣诞树添加颜色和装饰，CSS（Cascading Style Sheets）会派上用场。我们可以用`color`设置文字颜色，`background-color`设置背景色，`font-size`调整字体大小，以及`text-align`控制文本对齐方式等。 4. **字符艺术**：在纯HTML实现时，可能会利用ASCII字符（如星号(*)、加号(+)等）排列成树的形状。 5. **条件语句**：如果HTML代码中包含了JavaScript，可以通过`if...else`或`switch`语句来实现交互效果，比如点击页面时，圣诞树亮起灯光。 6. **事件监听**：`addEventListener`函数可以监听用户的交互，比如点击或鼠标悬停，触发相应的动画效果。 7. **CSS动画**：使用`@keyframes`规则，可以创建动画效果，让圣诞树上的灯光闪烁或树干摇曳。 8. **响应式设计**：考虑到不同设备的屏幕尺寸，开发者可能会采用媒体查询（`@media`）来确保圣诞树在各种设备上都能正确显示。通过对这些HTML和CSS技术的巧妙运用，开发者能够构建出一个动态的、互动的圣诞树，让用户在网页上也能感受到节日的氛围。通过查看`圣诞树.html`这个文件，我们可以深入理解代码背后的逻辑和实现技巧。如果你想要了解更多关于HTML创建圣诞树的具体步骤，可以打开文件查看源代码并进行学习。

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圣诞树.zip （1个子文件）

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<!DOCTYPE html> <html lang="en" > <head> <meta charset="UTF-8"> <title></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);

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