言:每當過節的時候,女朋友就抱怨我總是忘記給她買花,說程序不懂浪漫,這不我準備了幾款愛心動畫特效,打算當面向她表達一下。
寓意:告白無須多么華麗的語言,一顆顆小的愛心匯聚成一顆真心,讓你的另一半感受到濃濃的愛意。
代碼難度系數★★★
新建index.html,復制以下代碼保存在瀏覽器中打開即可。
<!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>
寓意:將想說的話打開一顆顆的愛心氣球上,隨著氣球不斷的升空,讓整個氛圍可更加地纏綿,看到此處可以有感動的淚水。
代碼難度系數★★★
新建index.html,復制以下代碼保存在瀏覽器中打開即可。
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>情人節快樂:)</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>
寓意:天空中下起了愛心雨,襯托的房間變得溫暖,也讓整個場景都變得溫馨無比,想必此時可以有一個大大的擁抱。
代碼難度系數★★★
代碼有image、js和html,所以不好貼出來,有需要的朋友直接問我要吧。
總結:程序員的工作本身就很枯燥,特定找了幾個好看的特效拿出來和大家分享,希望大家能夠快樂每一天,上述代碼親測可用,歡迎點贊收藏。
《完》
大家如果喜歡的話麻煩點贊、關注、轉發,謝謝大家。
注本頭條,專注做前端
馬上就到520,作為程序員來說,這是不可多得的表白神器——html5+canvas制作的愛心,由很多個小愛心組成的大愛心,可3d旋轉,效果非常不錯
愛心中間名字可自定義
// 演示
https://www.html5tricks.com/demo/html5-heart-explain/index2.html
// 下載
https://www.html5tricks.com/download/html5-heart-explain.rar
今為了追到女朋友,眾位男士也是掏空心思,絞盡腦汁想各種表白的新招式,務必給女神一個難以忘記的表白。程序員當然也不例外。既然學的是編程,那就要好好利用編程做一個與眾不同的表白,那最適合的編程語言就是前端了,能夠輕而易舉的就做出各種讓女孩心動的代碼特效。
更多特效源碼,編程資料,私信我1即可免費領取。
首先特效鎮文:
今天我們講的就是如何用代碼做出一個愛心表白特效。源碼如下:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>520</title>
<meta name="description" content="">
<meta name="keywords" content="">
<link href="" rel="stylesheet">
<style>
*{margin: 0; padding: 0;}
ul,ol{list-style: none;}
a{text-decoration: none;color: inherit;}
.clearfix:after{content: '';display: block;clear: both;}
.clear{clear: both;}
body{
background-color: #8a0a0a;
}
.love{
display: table;
flex-wrap: wrap;
margin: 100px auto;
}
.box{
float:left;
width: 25px;
height: 25px;
border-radius: 2px;
margin-right: 2px;
margin-bottom: 2px
}
.box:hover{
background: #8a0a0a;
}
.box:not(.transparent){
background-color: #fff;
opacity: 0;
transform: translateY(-300px);
animation: move 4s infinite;
}
@keyframes move{
25%{
opacity: 1;
transform: translateY(0);
}
50%{
opacity: 1;
transform: translateY(0);
}
65%{
opacity: 1;
transform: translateY(0);
}
100%{
opacity: 0;
transform: translateY(300px);
}
}
.box.delay1{
animation-delay: .1s;
}
.box.delay2{
animation-delay: .2s;
}
.box.delay3{
animation-delay: .4s;
}
.box.delay4{
animation-delay: .5s;
}
.box.delay5{
animation-delay: .7s;
}
.box.delay6{
animation-delay: .9s;
}
p{
width: 1000px;
margin: 200px auto 0;
color: #fff;
font-size: 40px;
text-align: center;
}
</style>
</head>
<body>
<div class="love">
<div class="box transparent"></div>
<div class="box white delay6"></div>
<div class="box white delay2"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box white delay4"></div>
<div class="box white delay3"></div>
<div class="box transparent"></div>
<div class="box clear white delay5"></div>
<div class="box white delay5"></div>
<div class="box white delay6"></div>
<div class="box white delay3"></div>
<div class="box transparent"></div>
<div class="box white delay6"></div>
<div class="box white delay1"></div>
<div class="box white delay4"></div>
<div class="box white delay2"></div>
<div class="box clear white"></div>
<div class="box white delay1"></div>
<div class="box white delay4"></div>
<div class="box white delay2"></div>
<div class="box white delay6"></div>
<div class="box whitedelay3"></div>
<div class="box white delay6"></div>
<div class="box white delay3"></div>
<div class="box white delay1"></div>
<div class="box clear white"></div>
<div class="box white delay3"></div>
<div class="box white delay1"></div>
<div class="box white delay1"></div>
<div class="box white delay6"></div>
<div class="box white delay3"></div>
<div class="box white delay5"></div>
<div class="box white delay2"></div>
<div class="box white delay4"></div>
<div class="box clear transparent"></div>
<div class="box white delay6"></div>
<div class="box white delay1"></div>
<div class="box white delay5"></div>
<div class="box white delay1"></div>
<div class="box white delay5"></div>
<div class="box white delay3"></div>
<div class="box white delay4"></div>
<div class="box transparent"></div>
<div class="box clear transparent"></div>
<div class="box transparent"></div>
<div class="box white delay5"></div>
<div class="box white delay1"></div>
<div class="box white delay5"></div>
<div class="box white delay2"></div>
<div class="box white"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box clear transparent"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box white"></div>
<div class="box white"></div>
<div class="box white delay2"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box clear transparent"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box white delay1"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
<div class="box transparent"></div>
</div>
<p>我愛代碼,也愛你,雖然我不善言辭,請讓我用我的方式說:我愛你!</p>
</body>
</html>
*請認真填寫需求信息,我們會在24小時內與您取得聯系。