用coding向你最爱的人说圣诞快乐
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文章目录
🎄🎄🎄圣诞节即将到来，今天让我们用编码的方式向你最爱的人表达圣诞节快乐
圣诞节的起源
圣诞节源自古罗马人迎接新年的农神节，与基督教本无关系。在基督教盛行罗马帝国后，教廷将这种民俗节日纳入基督教体系，同时以庆祝耶稣的降生。但在圣诞节这天不是耶稣的生辰，因为《圣经》未记载耶稣具体出生时间，同样没提到过有此种节日，是基督教吸收了古罗马神话的结果。
圣诞节是西方传统节日，也是许多西方国家一年中最重要的节日。每年这一天，欢快的圣诞歌在大街小巷飘扬，商场里流光溢彩，琳琅满目，到处弥漫着温馨欢乐的气息。孩子们在甜美的梦乡中，盼望着圣诞老人从天而降，带来梦寐以求的礼物。
平安夜和圣诞节现在很多人都在过，对于很多人而言，并不是在做一个所谓的洋节，而是在这一天让自己爱的人和爱我们的人开心，正如网络上流行的一句话：“ 世界上本没有圣诞老人，所有的惊喜和礼物都来自于爱你的人。 ”
圣诞祝福语
🎄 Merry Christmas
🎄今年圣诞老人🎅🏻也很忙喔
所以轮到我把圣诞惊喜给你咯！
🎄今天扎了个蝴蝶结，像不像你的圣诞礼物。
圣诞节没有领到礼物的到我这里领个37°的拥抱吧🎅🏻
🎄蟹蟹圣诞老公公，送礼全世界最棒的礼物给我，就是把你放进我心里。
麋鹿不会迷路，圣诞之礼，终将准时送达。🎅🏻
多少人，一夜之间，没穿圣诞装，却成了圣诞老人。🎅🏻
把我的小心思，偷偷塞进礼物盒，在圣诞节那一天，通通送给你
圣诞有我，要开心哦(• . •)
我想和你一起看夜景 一起吃热热的烤火鸡 一起许愿 看着那会发光的圣诞树 一起倒数
你快跳进圣诞老人的背包里 一觉醒来你就是我的礼物
想给每个善良的人一顶圣诞帽 愿这顶帽子成为他们的睡帽 从此每个安睡的日子都叫平安夜
希望圣诞树 和你一起到来🎄
圣诞快乐，喜乐长安。🎄
用 coding 说圣诞快乐
Canvas 渲染 圣诞树特效
index.html
DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>ChristmasTreetitle> <style> html, body { margin: 0; width: 100%; height: 100% } body { height: 100%; display: flex; justify-content: center; align-items: center; background-color: black; position: relative; overflow-x: hidden; overflow-y: hidden; } .snow-container { position: absolute; width: 400px; height: 550px; color: white; } @media screen and (max-width: 450px) { .snow-container { width: 100%; } } .snow-box { position: relative; width: 100%; height: 100%; } .snow { position: absolute; animation: 5s snow linear infinite; } @keyframes snow { 0% { left: 0; top: 0 } 80% { top: 90% } 100% { top: 90% } } .snow2 { left: 5%; top: 2%; position: absolute; animation: 10s snow2 ease-in infinite; } @keyframes snow2 { 0% { left: 5%; top: 2%; } 80% { top: 90% } 100% { top: 90% } } .snow3 { left: 10%; top: 8%; position: absolute; animation: 8s snow3 ease-out infinite; } @keyframes snow3 { 0% { left: 5%; top: 2%; } 80% { top: 90% } 100% { top: 90% } } .snow4 { left: 18%; top: 18%; position: absolute; animation: 7s snow4 ease-out infinite; } @keyframes snow4 { 0% { left: 18%; top: 18%; } 80% { top: 90% } 100% { top: 90% } } .snow5 { left: 59%; top: 1%; position: absolute; animation: 6s snow4 ease infinite; } @keyframes snow5 { 0% { left: 75%; top: 18%; } 80% { top: 90% } 100% { top: 90% } } .snow6 { left: 65%; top: 5%; position: absolute; animation: 6s snow6 ease-in infinite; } @keyframes snow6 { 0% { left: 75%; top: 18%; } 80% { top: 90% } 100% { top: 90% } } .snow7 { left: 75%; top: 18%; position: absolute; animation: 11s snow5 ease infinite; } @keyframes snow7 { 0% { left: 75%; top: 18%; } 80% { top: 90% } 100% { top: 90% } } .snow8 { left: 90%; top: 40%; position: absolute; animation: 5s snow8 ease-out infinite; } @keyframes snow8 { 0% { left: 90%; top: 20%; } 80% { top: 90% } 100% { top: 90% } } .snow9 { left: 50%; top: 10%; position: absolute; animation: 5s snow9 ease-out infinite; } @keyframes snow9 { 0% { left: 85%; top: 20%; } 80% { left: 50%; top: 90% } 100% { top: 90% } } .snow10 { left: 100%; top: 10%; position: absolute; animation: 7s snow10 ease infinite; } @keyframes snow10 { 0% { left: 100%; top: 10%; } 80% { left: 50%; top: 90% } 100% { left: 50%; top: 90% } } .text { font-size: 40px; color: #f1ebe5; text-shadow: 0 8px 9px #c4b59d, 0px -2px 1px #fff; font-weight: bold; letter-spacing: 2px; text-align: center; position: absolute; white-space: nowrap; left: 50%; transform: translate(-50%, -50%); } style>head><body> <div class="snow-container"> <div class="snow-box"> <span class="snow">*span> <span class="snow2">*span> <span class="snow3">*span> <span class="snow4">*span> <span class="snow5">*span> <span class="snow6">*span> <span class="snow7">*span> <span class="snow8">*span> <span class="snow9">*span> <span class="snow10">*span> div> <div class="text">鱼找水的🎄div> div> <canvas id="canvas" width="375" height="500">canvas> <script class="lazy" data-src="./assets/index.js"> script> <script> new ChristmasTree().renderTree() script>body>html>index.js
class ChristmasTree { constructor() { this.side = 20 this.gap = 6 + this.side this.init() this.treeData = [] } init() { this.canvas = document.querySelector('#canvas') this.ctx = this.canvas.getContext('2d') const { width, height } = this.canvas this.width = width this.height = height this.ctx.fillStyle = 'rgb(0, 0, 0)' this.ctx.fillRect(0, 0, width, height) } createArc(x, y, color) { this.ctx.beginPath() this.ctx.fillStyle = color this.ctx.arc(x, y, this.side / 2, 0, Math.PI * 2, false) this.ctx.fill() } createRect(x, y, color) { this.ctx.fillStyle = color this.ctx.fillRect(x, y, this.side, this.side) } createPentastar(x, y, color) { this.ctx.beginPath() const R = this.gap / 2, r = this.gap / 5 for (var i = 0; i < 5; i++) { this.ctx.lineTo( Math.cos(((18 + i * 72) / 180) * Math.PI) * R + x, -Math.sin(((18 + i * 72) / 180) * Math.PI) * R + y ) this.ctx.lineTo( Math.cos(((54 + i * 72) / 180) * Math.PI) * r + x, -Math.sin(((54 + i * 72) / 180) * Math.PI) * r + y ) } this.ctx.closePath() this.ctx.lineWidth = '3' this.ctx.fillStyle = color this.ctx.fill() } buildTreeCrown(startNodeNum, rowsNum, startHeight) { const arr = [] const midRect = this.width / 2 - this.side / 2 const midArc = this.width / 2 for (let i = 0; i < rowsNum; i++) { for (let j = 0; j < startNodeNum; j++) { if (rowsNum - i === 2 && startNodeNum - j <= 2) { arr.push({ type: 'start', x: midArc + (j % 2 === 0 ? (-this.gap * j) / 2 : (+(j + 1) / 2) * this.gap), y: startHeight + this.gap * i + this.side / 2, color: rowsNum - i === 1 ? 'red' : 'yellow' }) } else if (rowsNum - i === 1 && startNodeNum - j <= 2) { arr.push({ type: 'arc', x: midArc + (j % 2 === 0 ? (-this.gap * j) / 2 : (+(j + 1) / 2) * this.gap), y: startHeight + this.gap * i + this.side / 2, color: 'red' }) } else { arr.push({ type: 'rect', x: midRect + (j % 2 === 0 ? (-this.gap * j) / 2 : (+(j + 1) / 2) * this.gap), y: startHeight + this.gap * i, color: i === rowsNum - 1 && startNodeNum - j >= 7 ? 'red' : 'green' }) } } if (i === rowsNum - 3) { startNodeNum += 4 } else { startNodeNum += 2 } } return arr } buildTreeStump(row, col, gapRow) { const arr = [] const midRect = this.width / 2 - this.side / 2 for (let i = 0; i < row; i++) { for (let j = 0; j < col; j++) { arr.push({ type: 'rect', x: midRect + (j % 2 === 0 ? (-this.gap * j) / 2 : (+(j + 1) / 2) * this.gap), y: (gapRow + i) * this.gap, color: 'rgb(67, 11, 0)' }) } } return arr } setTreeData() { const _this = this let gapRow = 1 this.treeData = [{ type: 'start', x: this.width / 2, y: this.side / 2 + 2, color: 'yellow' }, ...setTreeCrownData(3), ...this.buildTreeStump(5, 3, gapRow) ] function setTreeCrownData(crownNum) { const arr = [] let indexNode = 1 let rowsNum = 4 for (let i = 0; i < crownNum; i++) { arr.push(..._this.buildTreeCrown(indexNode, rowsNum, _this.gap * gapRow)) indexNode += 2 gapRow += rowsNum } return arr } } renderTree() { this.setTreeData() for (const item of this.treeData) { if (item.type === 'arc') { const { x, y, color } = item this.createArc(x, y, color) } else if (item.type === 'rect') { const { x, y, color } = item this.createRect(x, y, color) } else if (item.type === 'start') { const { x, y, color } = item this.createPentastar(x, y, color) } } }}唯美圣诞树
里边用到的音乐自己下载，修改变量const files为对应mp3的路径
DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Musical Christmas Lightstitle> <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; } #tree-text { position: absolute; top: 18vh; width: 100vw; line-height: 5vh; text-align: center; color: #fab1a0; font-size: x-large; font-family: "Lucida Console", "Courier New", monospace; opacity: 1; font-weight: bold; color: transparent; background: linear-gradient(45deg, #fab1a0 35%, #ff7675, #e17055 60%); background-size: cover; -webkit-background-clip: text; -ms-background-clip: text; -moz-background-clip: text; -o-background-clip: text; } @keyframes gradually-appear { from { opacity: 0; } to { opacity: 1; } } .show { display: block; animation-name: gradually-appear; animation-duration: 8s; } .hide { display: none; } 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 class="lazy" data-src="https://cdn.jsdelivr.net/npm/three@0.115.0/build/three.min.js">script> <script class="lazy" data-src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/EffectComposer.js">script> <script class="lazy" data-src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/RenderPass.js">script> <script class="lazy" data-src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/ShaderPass.js">script> <script class="lazy" data-src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/shaders/CopyShader.js">script> <script class="lazy" data-src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/shaders/LuminosityHighPassShader.js">script> <script class="lazy" data-src="https://cdn.jsdelivr.net/npm/three@0.115.0/examples/js/postprocessing/UnrealBloomPass.js">script> <div id="overlay"> <ul> <li class="title">宝贝，选一首喜欢的歌吧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 Dottbutton>li> <li><button class="btn" id="btnC" type="button">No room at the inn by TRG Banksbutton>li> <li><button class="btn" id="btnD" type="button">Jingle Bell Swing by Mark Smebybutton>li> <li style="display: none;" class="separator">或者li> <li style="display: none;"> <input type="file" id="upload" hidden /> <label for="upload">Upload Filelabel> li> ul> div> <div id="tree-text" class="hide"> 祝我最爱的girl圣诞节快乐 <br /> 希望能与你度过以后的每一个圣诞节，I ❤️ you～ 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(); document.getElementById("tree-text").className = "show"; 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 = '正在下载音乐，请稍等...'; // 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 files = ["./music/Simon_Panrucker_-_01_-_Snowflakes_Falling_Down.mp3", "./music/Dott_-_01_-_This_Christmas.mp3", "./music/TRG_Banks_-_12_-_No_room_at_the_inn.mp3", "./music/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 = '请稍等...'; 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>CSS实现圣诞树
DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width= , initial-scale=1.0"> <title>圣诞树title>