动态爱心代码❤

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>canvas爱心</title>

/*
* 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>

HTML+原生JavaScript

效果图如下：

快写给你心爱的那个他（她）吧！

点燃我温暖你——李峋的爱心代码相关推荐

【李峋的爱心代码4】
一.源码 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3. ...
【李峋的爱心代码5带文字】
一.源码 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML>< ...
李峋的爱心表白代码来了
咱啥也不说先上代码 import random from math import sin, cos, pi, log from tkinter import *CANVAS_WIDTH = 1500 ...
李峋同款代码，用html来进行表白
(不要问我李洵是谁,我也不知道他是谁,只是身边的女生都在讨论)不要以为程序员只会埋头写代码,程序员浪漫起来,那也是很浪漫的,下面我们来看一段表白用的代码,这是用html来实现的 <!DOCTYP ...
《点燃我温暖你》中李峋的同款爱心代码
前言最近<点燃我温暖你>中李峋的爱心代码超级火,看着特别心动,这不,光棍节快到了,给兄弟们教学一波爱心代码,赶在双十一前表白,让这个双十一不在是孤单一个人! 目录前言 Python简易 ...
[Python]《点燃我，温暖你》李峋同款爱心代码
代码原作者是[抖音:无所不能的法学生小黑] 代码原作者是[抖音:无所不能的法学生小黑] 代码原作者是[抖音:无所不能的法学生小黑] 重要的事情说三次 import random import sys ...
【html】理工男李峋的极致浪漫：爱心代码｜和你的心跳同频共振
[写在开头] 不知道发生什么事了?点我看到最近<点燃我温暖你>中男主角--理工男李峋的爱心代码撩到了无数人,于是把代码开源分享给大家. 哈哈哈,只是长的比较像,李峋的爱心代码你得找李峋去 ...
李峋同款爱心代码，表白神器！
背景最近<点燃我温暖你>中李峋的爱心代码超级火,我在刷b站的时候,偶尔能刷到,然后就点进去看了下,觉得还挺有意思.于是网上搜了一下,挺多复现例子.我找了个看似最火的复现代码,分享一下- ...
【圣诞节特辑】爱心代码（程序员的浪漫plus+）-李峋
2022年圣诞节到来啦,很高兴这次我们又能一起度过~ 唯有热爱,可抵岁月漫长,唯有热爱,不畏世间无常! 一.前言前段时间<点燃我温暖你>中李峋的爱心代码超级火,看着特别心动!这不,圣诞节 ...

点燃我温暖你——李峋的爱心代码

动态爱心代码❤

点燃我温暖你——李峋的爱心代码相关推荐

最新文章

热门文章