夜雨聆风
爱心效果(附源码)
预览效果
源码(html+css)部分
<!DOCTYPE html><html><head><metahttp-equiv="Content-Type"content="text/html; charset=UTF-8"><title>💗 Love you 💗 My Dear XXX💗</title><styletype="text/css">body {margin: 0;overflow: hidden;background: #000; }canvas {position: absolute;width: 100%;height: 100%; }#pinkboard {animation: anim 1.5s ease-in-out infinite;-webkit-animation: anim 1.5s ease-in-out infinite;-o-animation: anim 1.5s ease-in-out infinite;-moz-animation: anim 1.5s ease-in-out infinite; }@keyframes anim { 0% {transform: scale(0.8); } 25% {transform: scale(0.7); } 50% {transform: scale(1); } 75% {transform: scale(0.7); } 100% {transform: scale(0.8); } }@-webkit-keyframes anim { 0% {-webkit-transform: scale(0.8); } 25% {-webkit-transform: scale(0.7); } 50% {-webkit-transform: scale(1); } 75% {-webkit-transform: scale(0.7); } 100% {-webkit-transform: scale(0.8); } }@-o-keyframes anim { 0% {-o-transform: scale(0.8); } 25% {-o-transform: scale(0.7); } 50% {-o-transform: scale(1); } 75% {-o-transform: scale(0.7); } 100% {-o-transform: scale(0.8); } }@-moz-keyframes anim { 0% {-moz-transform: scale(0.8); } 25% {-moz-transform: scale(0.7); } 50% {-moz-transform: scale(1); } 75% {-moz-transform: scale(0.7); } 100% {-moz-transform: scale(0.8); } }#name {position: absolute;top: 50%;left: 50%;transform: translate(-50%, -50%);margin-top: -20px;font-size: 46px;color: #ea80b0; }</style></head><body><canvasid="pinkboard"width="1920"height="947"></canvas><canvasid="canvas"width="1920"height="947"></canvas><scriptsrc="./server.js"></script></body>源码js (创建一个server.js文件)
var loverName = "💗楚雨荨，爱你哟💗"const colors = ["#eec996","#8fb7d3","#b7d4c6","#c3bedd","#f1d5e4","#cae1d3","#f3c89d","#d0b0c3","#819d53","#c99294","#cec884","#ff8e70","#e0a111","#fffdf6","#cbd7ac","#e8c6c0","#dc9898","#ecc8ba",]; //用来设置的颜�� var canvas = document.getElementById("canvas");var ctx = canvas.getContext("2d");let count = 1;var ww = window.innerWidth;var wh = window.innerHeight;var hearts = [];functioninit() { requestAnimationFrame(render); canvas.width = ww; canvas.height = wh;for (var i = 0; i < 100; i++) { hearts.push(new Heart()); }}functionHeart() {this.x = Math.random() * ww;this.y = Math.random() * wh;this.opacity = Math.random() * 0.5 + 0.5;this.vel = {x: (Math.random() - 0.5) * 4,y: (Math.random() - 0.5) * 4, };this.targetScale = Math.random() * 0.15 + 0.02;this.scale = this.targetScale * Math.random();}Heart.prototype.update = function (i) {this.x += this.vel.x;this.y += this.vel.y;this.scale += (this.targetScale - this.scale) * 0.01;if (this.x - this.width > ww || this.x + this.width < 0) {this.scale = 0;this.x = Math.random() * ww; }if (this.y - this.height > wh || this.y + this.height < 0) {this.scale = 0;this.y = Math.random() * wh; }this.width = 473.8;this.height = 408.6;};Heart.prototype.draw = function (i) { ctx.globalAlpha = this.opacity; ctx.font = `${180 * this.scale}px "微软雅黑"`;// ctx.font="20px"; ctx.fillStyle = colors[i % 18]; ctx.fillText( loverName,this.x - this.width * 0.5,this.y - this.height * 0.5,this.width,this.height );// ctx.drawImage(// heartImage,// this.x - this.width * 0.5,// this.y - this.height * 0.5,// this.width,// this.height// );};functionrender() { ctx.clearRect(0, 0, ww, wh);// ctx.globalAlpha = 1;// ctx.fillStyle = "rgba(255,255,255,0.3)";// ctx.fillRect(0, 0, ww, wh);for (var i = 0; i < 100; i++) { hearts[i].update(i); hearts[i].draw(i); } requestAnimationFrame(render);}init();window.addEventListener("resize", function () { ww = window.innerWidth; wh = window.innerHeight;});/* * Settings */var settings = {particles: {length: 500, // maximum amount of particlesduration: 2, // particle duration in secvelocity: 100, // particle velocity in pixels/seceffect: -0.75, // play with this for a nice effectsize: 30, // particle size in pixels },};/* * RequestAnimationFrame polyfill by Erik M?ller */(function () {var b = 0;var c = ["ms", "moz", "webkit", "o"];for (var a = 0; a < c.length && !window.requestAnimationFrame; ++a) {window.requestAnimationFrame = window[c[a] + "RequestAnimationFrame"];window.cancelAnimationFrame =window[c[a] + "CancelAnimationFrame"] ||window[c[a] + "CancelRequestAnimationFrame"]; }if (!window.requestAnimationFrame) {window.requestAnimationFrame = function (h, e) {var d = newDate().getTime();var f = Math.max(0, 16 - (d - b));var g = window.setTimeout(function () { h(d + f); }, f); b = d + f;return g; }; }if (!window.cancelAnimationFrame) {window.cancelAnimationFrame = function (d) { clearTimeout(d); }; }})();/* * Point class */var Point = (function () {functionPoint(x, y) {this.x = typeof x !== "undefined" ? x : 0;this.y = typeof y !== "undefined" ? y : 0; } Point.prototype.clone = function () {returnnew Point(this.x, this.y); }; Point.prototype.length = function (length) {if (typeof length == "undefined")returnMath.sqrt(this.x * this.x + this.y * this.y);this.normalize();this.x *= length;this.y *= length;returnthis; }; Point.prototype.normalize = function () {var length = this.length();this.x /= length;this.y /= length;returnthis; };return Point;})();/* * Particle class */var Particle = (function () {functionParticle() {this.position = new Point();this.velocity = new Point();this.acceleration = new Point();this.age = 0; } Particle.prototype.initialize = function (x, y, dx, dy) {this.position.x = x;this.position.y = y;this.velocity.x = dx;this.velocity.y = dy;this.acceleration.x = dx * settings.particles.effect;this.acceleration.y = dy * settings.particles.effect;this.age = 0; }; Particle.prototype.update = function (deltaTime) {this.position.x += this.velocity.x * deltaTime;this.position.y += this.velocity.y * deltaTime;this.velocity.x += this.acceleration.x * deltaTime;this.velocity.y += this.acceleration.y * deltaTime;this.age += deltaTime; }; Particle.prototype.draw = function (context, image) {functionease(t) {return --t * t * t + 1; }var size = image.width * ease(this.age / settings.particles.duration); context.globalAlpha = 1 - this.age / settings.particles.duration; context.drawImage( image,this.position.x - size / 2,this.position.y - size / 2, size, size ); };return Particle;})();/* * ParticlePool class */var ParticlePool = (function () {var particles, firstActive = 0, firstFree = 0, duration = settings.particles.duration;functionParticlePool(length) {// create and populate particle pool particles = newArray(length);for (var i = 0; i < particles.length; i++) particles[i] = new Particle(); } ParticlePool.prototype.add = function (x, y, dx, dy) { particles[firstFree].initialize(x, y, dx, dy);// handle circular queue firstFree++;if (firstFree == particles.length) firstFree = 0;if (firstActive == firstFree) firstActive++;if (firstActive == particles.length) firstActive = 0; }; ParticlePool.prototype.update = function (deltaTime) {var i;// update active particlesif (firstActive < firstFree) {for (i = firstActive; i < firstFree; i++) particles[i].update(deltaTime); }if (firstFree < firstActive) {for (i = firstActive; i < particles.length; i++) particles[i].update(deltaTime);for (i = 0; i < firstFree; i++) particles[i].update(deltaTime); }// remove inactive particleswhile ( particles[firstActive].age >= duration && firstActive != firstFree ) { firstActive++;if (firstActive == particles.length) firstActive = 0; } }; ParticlePool.prototype.draw = function (context, image) {// draw active particlesif (firstActive < firstFree) {for (i = firstActive; i < firstFree; i++) particles[i].draw(context, image); }if (firstFree < firstActive) {for (i = firstActive; i < particles.length; i++) particles[i].draw(context, image);for (i = 0; i < firstFree; i++) particles[i].draw(context, image); } };return ParticlePool;})();/* * Putting it all together */(function (canvas) {var context = canvas.getContext("2d"), particles = new ParticlePool(settings.particles.length), particleRate = settings.particles.length / settings.particles.duration, // particles/sec time;// get point on heart with -PI <= t <= PIfunctionpointOnHeart(t) {returnnew Point(160 * Math.pow(Math.sin(t), 3),130 * Math.cos(t) -50 * Math.cos(2 * t) -20 * Math.cos(3 * t) -10 * Math.cos(4 * t) +25 ); }// creating the particle image using a dummy canvasvar image = (function () {var canvas = document.createElement("canvas"), context = canvas.getContext("2d"); canvas.width = settings.particles.size; canvas.height = settings.particles.size;// helper function to create the pathfunctionto(t) {var point = pointOnHeart(t); point.x = settings.particles.size / 2 + (point.x * settings.particles.size) / 350; point.y = settings.particles.size / 2 - (point.y * settings.particles.size) / 350;return point; }// create the path context.beginPath();var t = -Math.PI;var point = to(t); context.moveTo(point.x, point.y);while (t < Math.PI) { t += 0.01; // baby steps! point = to(t); context.lineTo(point.x, point.y); } context.closePath();// create the fill context.fillStyle = "#ea80b0"; context.fill();// create the imagevar image = new Image(); image.src = canvas.toDataURL();return image; })();// render that thing!functionrender() {// next animation frame requestAnimationFrame(render);// update timevar newTime = newDate().getTime() / 1000, deltaTime = newTime - (time || newTime); time = newTime;// clear canvas context.clearRect(0, 0, canvas.width, canvas.height);// create new particlesvar amount = particleRate * deltaTime;for (var i = 0; i < amount; i++) {var pos = pointOnHeart(Math.PI - 2 * Math.PI * Math.random());var dir = pos.clone().length(settings.particles.velocity); particles.add( canvas.width / 2 + pos.x, canvas.height / 2 - pos.y, dir.x, -dir.y ); }// update and draw particles particles.update(deltaTime); particles.draw(context, image); }// handle (re-)sizing of the canvasfunctiononResize() { canvas.width = canvas.clientWidth; canvas.height = canvas.clientHeight; }window.onresize = onResize;// delay rendering bootstrap setTimeout(function () { onResize(); render(); }, 10);})(document.getElementById("pinkboard"));
