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源码分享 HTML 爱心

lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<HTML>

<HEAD>

<TITLE> New Document </TITLE>

<META NAME="Generator" CONTENT="EditPlus">

<META NAME="Author" CONTENT="">

<META NAME="Keywords" CONTENT="">

<META NAME="Description" CONTENT="">

<style>

html, body {

height: 100%;

padding: 0;

margin: 0;

background: #000;

}

canvas {

position: absolute;

width: 100%;

height: 100%;

}

</style>

</HEAD>

<BODY>

</style>

<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 Möller

*/

(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>

天全网都在过双十一,咱们轻松点聊个 5 分钟的天,就说两件事。

第一件事

说件最近发生的 「怪事」

这几天,Gitee 咨询后台有点热闹。除了一如既往的技术操作咨询外,老有同学问个啥爱心代码,求同款,搞得客服小姐姐都懵了,还以为又是哪个商家双十一促销做广告,投放了 Gitee 词条。在 Gitee 查了下,好家伙一连串爱心代码、李同款的开源项目,这些都是个啥?

带着好奇搜了搜,原来是最近由陈凯歌之子陈飞宇和青春疼痛文学女主代表张婧仪主演的热播电视剧《点燃我,温暖我》中的剧情。简单说,陈飞宇饰演的角色「李峋」是个程序员,为女主用 C 语言写了个 爱心代码,制造了小惊喜,谁说程序员不懂浪漫呢。这不仅点燃了女主的心,屏幕对面的大伙对「阿瑟」更上头了。

题外话: 不过剧中似乎是在 Python 里写的 C 语言?编剧们不太严谨且专业吧,有没有实时追剧的小伙伴,你们发现 Bug 了吗?

电视剧爆火,大家都在让自己的程序员男朋友/女朋友写个同款爱心代码。没程序员男朋友/女朋友的别担心,别人都有爱心代码了,咱们 Gitee 的开发者们也必须有,开源人不仅懂浪漫,还有共享精神。今天给大家分享个用 Python 写的爱心代码开源项目,如果感兴趣或者想给自己的另一半制造小浪漫的同学可以自己上手试一试。

除了这个用 Python 写的同款爱心代码之外,Gitee 上还有许多采用其他语言(如 HTML)成功运行的爱心代码,如果你认为自己写的爱心更精美,你也可以去 Gitee 给 800万 开发者们展示你的项目。

项目作者: chnhjf

项目地址: https://gitee.com/chnhjf/love

操作步骤

步骤一: 确保你安装了 Python 软件,如 python3

步骤二: 安装 PIP 包 tkinter

步骤三: 执行 python3 love.py

源代码:

import random
from math import sin, cos, pi, log
from tkinter import *
import ctypes

user32 = ctypes.windll.user32
CANVAS_WIDTH = user32.GetSystemMetrics(0)  # 画布的宽
CANVAS_HEIGHT = user32.GetSystemMetrics(1)  # 画布的高
CANVAS_CENTER_X = CANVAS_WIDTH / 2  # 画布中心的X轴坐标
CANVAS_CENTER_Y = CANVAS_HEIGHT / 2  # 画布中心的Y轴坐标
IMAGE_ENLARGE = 11  # 放大比例
HEART_COLOR = "#ff2121"  # 心的颜色,这个是中国红


def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):
    """
    “爱心函数生成器”
    :param shrink_ratio: 放大比例
    :param t: 参数
    :return: 坐标
    """
    # 基础函数
    x = 16 * (sin(t) ** 3)
    y = -(13 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(4 * t))

    # 放大
    x *= shrink_ratio
    y *= shrink_ratio

    # 移到画布中央
    x += CANVAS_CENTER_X
    y += CANVAS_CENTER_Y

    return int(x), int(y)


def scatter_inside(x, y, beta=0.15):
    """
    随机内部扩散
    :param x: 原x
    :param y: 原y
    :param beta: 强度
    :return: 新坐标
    """
    ratio_x = - beta * log(random.random())
    ratio_y = - beta * log(random.random())

    dx = ratio_x * (x - CANVAS_CENTER_X)
    dy = ratio_y * (y - CANVAS_CENTER_Y)

    return x - dx, y - dy


def shrink(x, y, ratio):
    """
    抖动
    :param x: 原x
    :param y: 原y
    :param ratio: 比例
    :return: 新坐标
    """
    force = -1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.6)  # 这个参数...
    dx = ratio * force * (x - CANVAS_CENTER_X)
    dy = ratio * force * (y - CANVAS_CENTER_Y)
    return x - dx, y - dy


def curve(p):
    """
    自定义曲线函数,调整跳动周期
    :param p: 参数
    :return: 正弦
    """
    # 可以尝试换其他的动态函数,达到更有力量的效果(贝塞尔?)
    return 2 * (2 * sin(4 * p)) / (2 * pi)


class Heart:
    """
    爱心类
    """

    def __init__(self, generate_frame=20):
        self._points = set()  # 原始爱心坐标集合
        self._edge_diffusion_points = set()  # 边缘扩散效果点坐标集合
        self._center_diffusion_points = set()  # 中心扩散效果点坐标集合
        self.all_points = {}  # 每帧动态点坐标
        self.build(2000)

        self.random_halo = 1000

        self.generate_frame = generate_frame
        for frame in range(generate_frame):
            self.calc(frame)

    def build(self, number):
        # 爱心
        for _ in range(number):
            t = random.uniform(0, 2 * pi)  # 随机不到的地方造成爱心有缺口
            x, y = heart_function(t)
            self._points.add((x, y))

        # 爱心内扩散
        for _x, _y in list(self._points):
            for _ in range(3):
                x, y = scatter_inside(_x, _y, 0.05)
                self._edge_diffusion_points.add((x, y))

        # 爱心内再次扩散
        point_list = list(self._points)
        for _ in range(4000):
            x, y = random.choice(point_list)
            x, y = scatter_inside(x, y, 0.17)
            self._center_diffusion_points.add((x, y))

    @staticmethod
    def calc_position(x, y, ratio):
        # 调整缩放比例
        force = 1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.520)  # 魔法参数

        dx = ratio * force * (x - CANVAS_CENTER_X) + random.randint(-1, 1)
        dy = ratio * force * (y - CANVAS_CENTER_Y) + random.randint(-1, 1)

        return x - dx, y - dy

    def calc(self, generate_frame):
        ratio = 10 * curve(generate_frame / 10 * pi)  # 圆滑的周期的缩放比例

        halo_radius = int(4 + 6 * (1 + curve(generate_frame / 10 * pi)))
        halo_number = int(3000 + 4000 * abs(curve(generate_frame / 10 * pi) ** 2))

        all_points = []

        # 光环
        heart_halo_point = set()  # 光环的点坐标集合
        for _ in range(halo_number):
            t = random.uniform(0, 2 * pi)  # 随机不到的地方造成爱心有缺口
            x, y = heart_function(t, shrink_ratio=11.6)  # 魔法参数
            x, y = shrink(x, y, halo_radius)
            if (x, y) not in heart_halo_point:
                # 处理新的点
                heart_halo_point.add((x, y))
                x += random.randint(-14, 14)
                y += random.randint(-14, 14)
                size = random.choice((1, 2, 2))
                all_points.append((x, y, size))

        # 轮廓
        for x, y in self._points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 3)
            all_points.append((x, y, size))

        # 内容
        for x, y in self._edge_diffusion_points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 2)
            all_points.append((x, y, size))

        for x, y in self._center_diffusion_points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 2)
            all_points.append((x, y, size))

        self.all_points[generate_frame] = all_points

    def render(self, render_canvas, render_frame):
        for x, y, size in self.all_points[render_frame % self.generate_frame]:
            render_canvas.create_rectangle(x, y, x + size, y + size, width=0, fill=HEART_COLOR)


def draw(main: Tk, render_canvas: Canvas, render_heart: Heart, render_frame=0):
    render_canvas.delete('all')
    render_heart.render(render_canvas, render_frame)
    main.after(160, draw, main, render_canvas, render_heart, render_frame + 1)


if __name__ == '__main__':
    root = Tk()  # 一个Tk
    root.attributes('-fullscreen', True)  # 全屏
    root.attributes('-alpha', 0.9)  # 透明度
    canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)
    canvas.pack()
    heart = Heart()  # 心
    draw(root, canvas, heart)  # 开始画画~
    root.mainloop()

注意事项:

1.此项目的操作系统必须是 Windows ,如果你使用的是其他操作系统,请及时调整此处的分辨率。

如 马建仓在试操作时,因不是 Windows 系统,需将此处分辨率适配电脑。虽然这只是个非常小的有趣项目,不过也希望项目作者也能稍作完善。

2.如果你不想写代码,作者也为你提供了一个可以直接运行的爱心,只需要在 Gitee 仓库里下载 exe 文件即可运行。

大家可以前往 Gitee ,亲自上手试试。

第二件事

好了,该说第二件事了。

这不是双十一到了,除了给开源人的浪漫,Gitee 也给想要更高效的开发者与团队带来了福利。

自 11 月 8 日以来,Gitee 企业版已经开启了 「年终狂欢季」 活动,三重惊喜福利新老用户均可享受!

活动地址:https://gitee.com/activity/2022double11

今为了追到女朋友,众位男士也是掏空心思,绞尽脑汁想各种表白的新招式,务必给女神一个难以忘记的表白。程序员当然也不例外。既然学的是编程,那就要好好利用编程做一个与众不同的表白,那最适合的编程语言就是前端了,能够轻而易举的就做出各种让女孩心动的代码特效。

更多特效源码,编程资料,私信我1即可免费领取

首先特效镇文:

今天我们讲的就是如何用代码做出一个爱心表白特效。源码如下:

<!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>我爱代码,也爱你,虽然我不善言辞,请让我用我的方式说:我爱你!</p>

</body>

</html>