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html5+css3实现三款好看的告白爱心特效,赶紧去给女朋友演示吧

小程序软件开发 548

前言:

今天姐妹们对“html5爱心”可能比较看重,小伙伴们都需要了解一些“html5爱心”的相关知识。那么小编也在网摘上收集了一些对于“html5爱心””的相关资讯,希望看官们能喜欢,小伙伴们一起来了解一下吧!

序言:每当过节的时候,女朋友就抱怨我总是忘记给她买花,说程序不懂浪漫,这不我准备了几款爱心动画特效,打算当面向她表达一下。

第一款:html5通过canvas实现浪漫告白爱心动画特效

寓意:告白无须多么华丽的语言,一颗颗小的爱心汇聚成一颗真心,让你的另一半感受到浓浓的爱意。

代码难度系数★★★

新建index.html,复制以下代码保存在浏览器中打开即可。

<!doctype html><html><head><meta charset="utf-8"><title>canvas 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 particles    duration:   2, // particle duration in sec    velocity: 100, // particle velocity in pixels/sec    effect: -0.75, // play with this for a nice effect    size:      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 pool    particles = 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 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 particles    if (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 particles    while (particles[firstActive].age >= duration && firstActive != firstFree) {      firstActive++;      if (firstActive == particles.length) firstActive = 0;    }          };  ParticlePool.prototype.draw = function(context, image) {    // draw active particles    if (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 <= PI  function 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 canvas  var 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 path    function 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 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 image    var image = new Image();    image.src = canvas.toDataURL();    return image;  })();    // render that thing!  function render() {    // next animation frame    requestAnimationFrame(render);        // update time    var newTime   = new Date().getTime() / 1000,        deltaTime = newTime - (time || newTime);    time = newTime;        // clear canvas    context.clearRect(0, 0, canvas.width, canvas.height);        // create new particles    var 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 canvas  function onResize() {    canvas.width  = canvas.clientWidth;    canvas.height = canvas.clientHeight;  }  window.onresize = onResize;    // delay rendering bootstrap  setTimeout(function() {    onResize();    render();  }, 10);})(document.getElementById('pinkboard'));</script></body></html>
第二款:html5通过canvas实现爱心气球上升动画特效

寓意:将想说的话打开一颗颗的爱心气球上,随着气球不断的升空,让整个氛围可更加地缠绵,看到此处可以有感动的泪水。

代码难度系数★★★

新建index.html,复制以下代码保存在浏览器中打开即可。

<!doctype html><html><head><meta charset="utf-8"><title>情人节快乐:)</title><style>canvas {	position: absolute;	top: 0;	left: 0;}</style></head><body><canvas id=c></canvas><script>var w = c.width = window.innerWidth,		h = c.height = window.innerHeight,		ctx = c.getContext( '2d' ),				opts = {			phrases: [ "Don't die\nit's not hard", "You're the Best", "Every day,\nYou're beautiful", "Every occasion,\nYou're clever", "A world without You?\nNah", "Keep kicking ass", "You're better than them,\nwhoever they are", "You're just amazing", "You are,\ntherefore I am", "Nothing better than You \ncould have happened to the world" ],			balloons: 10,			baseVelY: -1,			addedVelY: -1,			baseVelX: -.25,			addedVelX: .5,			baseSize: 20,			addedSize: 10,			baseSizeAdder: 2,			addedSizeAdder: 2,			baseIncrementer: .01,			addedIncrementer: .03,			baseHue: -10,			addedHue: 30,			font: '15px Verdana'		},				cycle = 0,		balloons = [];ctx.font = opts.font;function Balloon(){	this.reset();}Balloon.prototype.reset = function(){		this.size = opts.baseSize + opts.addedSize * Math.random();	this.sizeAdder = opts.baseSizeAdder + opts.addedSizeAdder * Math.random();	this.incrementer = opts.baseIncrementer + opts.addedIncrementer * Math.random();		this.tick = 0;		this.x = Math.random() * w;	this.y = h + this.size;		this.vx = opts.baseVelX + opts.addedVelX * Math.random();	this.vy = opts.baseVelY + opts.addedVelY * Math.random();		this.color = 'hsla(hue,70%,60%,.8)'.replace( 'hue', opts.baseHue + opts.addedHue * Math.random() );	this.phrase = opts.phrases[ ++cycle % opts.phrases.length ].split( '\n' );	this.lengths = [];		for( var i = 0; i < this.phrase.length; ++i )		this.lengths.push( -ctx.measureText( this.phrase[ i ] ).width / 2 );}Balloon.prototype.step = function(){		this.tick += this.incrementer;	this.x += this.vx;	this.y += this.vy;		var size = this.size + this.sizeAdder * Math.sin( this.tick );		ctx.lineWidth = size / 40;	ctx.strokeStyle = '#eee';	ctx.beginPath();	ctx.moveTo( this.x, this.y - 2 );	ctx.lineTo( this.x, this.y + size );	ctx.stroke();	ctx.fillStyle = this.color;		ctx.translate( this.x, this.y );	ctx.rotate( Math.PI / 4 );	//ctx.fillRect( -size / 2, -size / 2, size / 2, size / 2 );	ctx.beginPath();	ctx.moveTo( 0, 0 );	ctx.arc( -size / 2, -size / 2 + size / 4, size / 4, Math.PI / 2, Math.PI * 3 / 2 );	ctx.arc( -size / 2 + size / 4, -size / 2, size / 4, Math.PI, Math.PI * 2 );	ctx.lineTo( 0, 0 );	ctx.fill();	ctx.rotate( -Math.PI / 4 );	ctx.translate( -this.x, -this.y );		ctx.translate( this.x, this.y + size + 15 );	ctx.scale( size / this.size, size / this.size );	ctx.fillStyle = '#eee';	for( var i = 0; i < this.phrase.length; ++i )		ctx.fillText( this.phrase[ i ], this.lengths[ i ], i * 15 );	ctx.scale( this.size / size, this.size / size );	ctx.translate( -this.x, -( this.y + size + 15 ) );		if( this.y < -size * 3 )		this.reset();	}function anim(){		window.requestAnimationFrame( anim );		ctx.fillStyle = '#222';	ctx.fillRect( 0, 0, w, h );		if( balloons.length < opts.balloons && Math.random() < .01 )		balloons.push( new Balloon );		for( var i = 0; i < balloons.length; ++i )		balloons[ i ].step();}anim();</script></body></html>
第三款:jQuery+css3实现爱心雨动画特效

寓意:天空中下起了爱心雨,衬托的房间变得温暖,也让整个场景都变得温馨无比,想必此时可以有一个大大的拥抱。

代码难度系数★★★

代码有image、js和html,所以不好贴出来,有需要的朋友直接问我要吧。

总结:程序员的工作本身就很枯燥,特定找了几个好看的特效拿出来和大家分享,希望大家能够快乐每一天,上述代码亲测可用,欢迎点赞收藏。

《完》

大家如果喜欢的话麻烦点赞、关注、转发,谢谢大家。

标签: #html5爱心