HTML5 实现动态爱心网页代码

表白女朋友找不到合适的方法？可以试一试动态爱心网页，带你升华感情，一步步走上人生巅峰。

代码如下：

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>canvas爱心</title><style>
html, body {height: 100%;padding: 0;margin: 0;background: #000;
}
canvas {position: absolute;width: 100%;height: 100%;
}</style>
</head>
<body><canvas id="pinkboard"></canvas><script>
/** 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=new Date().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() {function Point(x, y) {this.x = (typeof x !== 'undefined') ? x : 0;this.y = (typeof y !== 'undefined') ? y : 0;}Point.prototype.clone = function() {return new Point(this.x, this.y);};Point.prototype.length = function(length) {if (typeof length == 'undefined')return Math.sqrt(this.x * this.x + this.y * this.y);this.normalize();this.x *= length;this.y *= length;return this;};Point.prototype.normalize = function() {var length = this.length();this.x /= length;this.y /= length;return this;};return Point;
})();/** Particle class*/var Particle = (function() {function Particle() {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) {function ease(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;function ParticlePool(length) {// create and populate particle poolparticles = new Array(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 queuefirstFree++;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/sectime;// get point on heart with -PI <= t <= PIfunction pointOnHeart(t) {return new 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 pathfunction to(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 pathcontext.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 fillcontext.fillStyle = '#ea80b0';context.fill();// create the imagevar image = new Image();image.src = canvas.toDataURL();return image;})();// render that thing!function render() {// next animation framerequestAnimationFrame(render);// update timevar newTime   = new Date().getTime() / 1000,deltaTime = newTime - (time || newTime);time = newTime;// clear canvascontext.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 particlesparticles.update(deltaTime);particles.draw(context, image);}// handle (re-)sizing of the canvasfunction onResize() {canvas.width  = canvas.clientWidth;canvas.height = canvas.clientHeight;}window.onresize = onResize;// delay rendering bootstrapsetTimeout(function() {onResize();render();}, 10);
})(document.getElementById('pinkboard'));</script></body>
</html>

HTML5 实现动态爱心网页代码相关推荐

三款html版女朋友表白告白代码，动态爱心表白代码，总有一款适合你，可定制表白内容
三款html版女朋友表白告白代码,动态爱心表白代码,总有一款适合你,可定制表白内容完整代码下载地址:三款html版女朋友表白告白代码,动态爱心表白代码 index.html <!DOCTYPE ...
复制粘贴-实现动态爱心网页版
上一篇的python爱心代码有很多读者反馈不会用. 本篇来一个小白版的,无需会代码,有浏览器就可以. 操作步骤 01 复制以下内容,保存为.html文件 (不会保存?先保存为txt文本,然后将后缀改为 ...
写一个动态爱心的C语言代码吧
好的,这是一个用 C 语言写的动态爱心的代码.需要注意,这段代码需要在 Windows 系统上运行,因为它使用了 Windows API 函数. #include <stdio.h> #i ...
HTML/樱花爱心网页/
HTML/樱花爱心网页/ 代码如下: <!DOCTYPE html> <html><head><title></title><scri ...
HTML5七夕情人节表白网页(抖音-流动爱心表白)HTML+CSS+JavaScript 求婚示爱代码 520情人节告白代码程序员表白源码 3D旋转相册 js烟花代码爱心表白网页
HTML5七夕情人节表白网页❤抖音-流动爱心表白❤ HTML+CSS+JavaScript 求婚示爱代码 520情人节告白代码程序员表白源码 3D旋转相册 js烟花代码爱心表白网页这是程序员表白 ...
HTML5七夕情人节表白网页(流星动画3D相册) HTML+CSS+JS 求婚 html生日快乐祝福代码网页 520情人节告白代码程序员表白源码 3D旋转相册 js烟花代码 css爱心表白
HTML5七夕情人节表白网页❤流星动画3D相册❤ HTML+CSS+JS 求婚 html生日快乐祝福代码网页 520情人节告白代码程序员表白源码抖音3D旋转相册 js烟花代码 css爱心表白这是 ...
HTML5七夕情人节表白网页(星空萤火虫) HTML+CSS+JS 求婚 html生日快乐祝福代码网页 520情人节告白代码程序员表白源码抖音3D旋转相册 js烟花代码 css爱心表白
HTML5七夕情人节表白网页(星空萤火虫) HTML+CSS+JS 求婚 html生日快乐祝福代码网页 520情人节告白代码程序员表白源码抖音3D旋转相册 js烟花代码 css爱心表白这是程序员 ...
HTML5七夕情人节表白网页(雪花爱心表白) HTML+CSS+JS 求婚 html生日快乐祝福代码网页 520情人节告白代码程序员表白源码抖音3D旋转相册 js烟花代码 css爱心表白
HTML5七夕情人节表白网页❤雪花爱心❤ HTML+CSS+JS 求婚 html生日快乐祝福代码网页 520情人节告白代码程序员表白源码抖音3D旋转相册 js烟花代码 css爱心表白这是程序员表 ...
HTML5七夕情人节表白网页(抖音超火3D炫酷魔方) HTML+CSS+JavaScript 求婚示爱代码 520情人节告白代码程序员表白源码 3D旋转相册 js烟花代码 css爱心表白
HTML5七夕情人节表白网页❤抖音超火❤3D炫酷魔方❤ HTML+CSS+JavaScript 求婚示爱代码 520情人节告白代码程序员表白源码 3D旋转相册 js烟花代码 css爱心表白这是程序 ...

HTML5 实现动态爱心网页代码

HTML5 实现动态爱心网页代码相关推荐

最新文章

热门文章