哈喽，大家好，我是木易巷！
爱情，是每个人都在追求的东西。身为一个IT行业人士，我也会追求爱情，我也会像心爱的人表达感情，只是我所表达的方式与他人有所不同。我的主要战场在计算机上，所以我就想到了用计算机来表达感情，在网页上做爱心，还是会动的爱心给她~
这次给大家带来炫酷的跳动爱心，有三种效果，大家自行领取~
第一种效果图：
代码部分
代码如下仅供参考，可以直接拿去复制粘贴！
import random
from math import sin, cos, pi, log
from tkinter import *
CANVAS_WIDTH = 640
CANVAS_HEIGHT = 480
CANVAS_CENTER_X = CANVAS_WIDTH / 2
CANVAS_CENTER_Y = CANVAS_HEIGHT / 2
IMAGE_ENLARGE = 11
HEART_COLOR = "#FF99CC"
def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):
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):
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):
force = -1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.6)
dx = ratio * force * (x - CANVAS_CENTER_X)
dy = ratio * force * (y - CANVAS_CENTER_Y)
return x - dx, y - dy
def curve(p):
return 2 * (2 * sin(4 * p)) / (2 * pi)
class Heart:
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):
for _ in range(number):
t = random.uniform(0, 2 * pi)
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):
force = 1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.520)
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)
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()
for _ in range(halo_number):
t = random.uniform(0, 2 * pi)
x, y = heart_function(t, shrink_ratio=11.6)
x, y = shrink(x, y, halo_radius)
if (x, y) not in heart_halo_point:
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()
canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)
canvas.pack()
heart = Heart()
draw(root, canvas, heart)
root.title("公众号：木易巷")
root.mainloop()
第二种效果图：
代码部分
代码如下仅供参考，可以直接拿去复制粘贴！
<!DOCTYPE HTML>
<!-- saved from url=(0051)https://httishere.gitee.io/notion/v4/love-name.html -->
<!DOCTYPE html PUBLIC "" ""><HTML><HEAD><META content="IE=11.0000"
http-equiv="X-UA-Compatible">
<META charset="utf-8"> <TITLE>木易巷</TITLE>
<STYLE type="text/css">
body {
margin: 0;
overflow: hidden;
background: #000;
}
canvas {
position: absolute;
width: 100%;
height: 100%;
}
#pinkboard {
animation: anim 1.5s ease-in-out infinite;
-webkit-animation: anim 1.5s ease-in-out infinite;
-o-animation: anim 1.5s ease-in-out infinite;
-moz-animation: anim 1.5s ease-in-out infinite;
}
@keyframes anim {
0% {
transform: scale(0.8);
}
25% {
transform: scale(0.7);
}
50% {
transform: scale(1);
}
75% {
transform: scale(0.7);
}
100% {
transform: scale(0.8);
}
}
@-webkit-keyframes anim {
0% {
-webkit-transform: scale(0.8);
}
25% {
-webkit-transform: scale(0.7);
}
50% {
-webkit-transform: scale(1);
}
75% {
-webkit-transform: scale(0.7);
}
100% {
-webkit-transform: scale(0.8);
}
}
@-o-keyframes anim {
0% {
-o-transform: scale(0.8);
}
25% {
-o-transform: scale(0.7);
}
50% {
-o-transform: scale(1);
}
75% {
-o-transform: scale(0.7);
}
100% {
-o-transform: scale(0.8);
}
}
@-moz-keyframes anim {
0% {
-moz-transform: scale(0.8);
}
25% {
-moz-transform: scale(0.7);
}
50% {
-moz-transform: scale(1);
}
75% {
-moz-transform: scale(0.7);
}
100% {
-moz-transform: scale(0.8);
}
}
#name {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
margin-top: -20px;
font-size: 46px;
color: #ea80b0;
}
</STYLE>
<META name="GENERATOR" content="MSHTML 11.00.10570.1001"></HEAD>
<BODY><CANVAS id="pinkboard"></CANVAS> <!-- <div id="name">木易巷 ❤️</div> -->
<CANVAS id="canvas"></CANVAS>
<SCRIPT type="text/javascript">
const colors = [
"#eec996",
"#8fb7d3",
"#b7d4c6",
"#c3bedd",
"#f1d5e4",
"#cae1d3",
"#f3c89d",
"#d0b0c3",
"#819d53",
"#c99294",
"#cec884",
"#ff8e70",
"#e0a111",
"#fffdf6",
"#cbd7ac",
"#e8c6c0",
"#dc9898",
"#ecc8ba",
]; //用来设置的颜色
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
let count = 1;
var ww = window.innerWidth;
var wh = window.innerHeight;
var hearts = [];
function init() {
requestAnimationFrame(render);
canvas.width = ww;
canvas.height = wh;
for (var i = 0; i < 100; i++) {
hearts.push(new Heart());
}
}
function Heart() {
this.x = Math.random() * ww;
this.y = Math.random() * wh;
this.opacity = Math.random() * 0.5 + 0.5;
this.vel = {
x: (Math.random() - 0.5) * 4,
y: (Math.random() - 0.5) * 4,
};
this.targetScale = Math.random() * 0.15 + 0.02;
this.scale = this.targetScale * Math.random();
}
Heart.prototype.update = function (i) {
this.x += this.vel.x;
this.y += this.vel.y;
this.scale += (this.targetScale - this.scale) * 0.01;
if (this.x - this.width > ww || this.x + this.width < 0) {
this.scale = 0;
this.x = Math.random() * ww;
}
if (this.y - this.height > wh || this.y + this.height < 0) {
this.scale = 0;
this.y = Math.random() * wh;
}
this.width = 473.8;
this.height = 408.6;
};
Heart.prototype.draw = function (i) {
ctx.globalAlpha = this.opacity;
ctx.font = `${180 * this.scale}px "微软雅黑"`;
// ctx.font="20px";
ctx.fillStyle = colors[i % 18];
ctx.fillText(
"木易巷",
this.x - this.width * 0.5,
this.y - this.height * 0.5,
this.width,
this.height
);
// ctx.drawImage(
// heartImage,
// this.x - this.width * 0.5,
// this.y - this.height * 0.5,
// this.width,
// this.height
// );
};
function render() {
ctx.clearRect(0, 0, ww, wh);
// ctx.globalAlpha = 1;
// ctx.fillStyle = "rgba(255,255,255,0.3)";
// ctx.fillRect(0, 0, ww, wh);
for (var i = 0; i < 100; i++) {
hearts[i].update(i);
hearts[i].draw(i);
}
requestAnimationFrame(render);
}
init();
// var heartImage = new Image();
// heartImage.onload = init();
// heartImage.src =
// "data:image/svg+xml;base64,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";
window.addEventListener("resize", function () {
ww = window.innerWidth;
wh = window.innerHeight;
});
</SCRIPT>
<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 = "#B22222";
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>
第三种效果图：
代码部分
代码如下仅供参考，可以直接拿去复制粘贴！
<!DOCTYPE HTML>
<!DOCTYPE html PUBLIC "" "">
<HTML>
<HEAD>
<META content="IE=11.0000"
http-equiv="X-UA-Compatible">
<META charset="utf-8">
<TITLE>木易巷</TITLE>
<STYLE type="text/css">
body {
margin: 0;
overflow: hidden;
background: #000;
}
canvas {
position: absolute;
width: 100%;
height: 100%;
}
#pinkboard {
animation: anim 1.5s ease-in-out infinite;
-webkit-animation: anim 1.5s ease-in-out infinite;
-o-animation: anim 1.5s ease-in-out infinite;
-moz-animation: anim 1.5s ease-in-out infinite;
}
@keyframes anim {
0% {
transform: scale(0.8);
}
25% {
transform: scale(0.7);
}
50% {
transform: scale(1);
}
75% {
transform: scale(0.7);
}
100% {
transform: scale(0.8);
}
}
@-webkit-keyframes anim {
0% {
-webkit-transform: scale(0.8);
}
25% {
-webkit-transform: scale(0.7);
}
50% {
-webkit-transform: scale(1);
}
75% {
-webkit-transform: scale(0.7);
}
100% {
-webkit-transform: scale(0.8);
}
}
@-o-keyframes anim {
0% {
-o-transform: scale(0.8);
}
25% {
-o-transform: scale(0.7);
}
50% {
-o-transform: scale(1);
}
75% {
-o-transform: scale(0.7);
}
100% {
-o-transform: scale(0.8);
}
}
@-moz-keyframes anim {
0% {
-moz-transform: scale(0.8);
}
25% {
-moz-transform: scale(0.7);
}
50% {
-moz-transform: scale(1);
}
75% {
-moz-transform: scale(0.7);
}
100% {
-moz-transform: scale(0.8);
}
}
#name {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
margin-top: -20px;
font-size: 46px;
color: #ea80b0;
}
</STYLE>
<META name="GENERATOR" content="MSHTML 11.00.10570.1001">
</HEAD>
<BODY>
<!--这个是红心-->
<CANVAS id="pinkboard"></CANVAS>
<!--这个是字体-->
<!--<CANVAS id="canvas"></CANVAS>-->
<SCRIPT>
const colors = [
"#eec996",
"#8fb7d3",
"#b7d4c6",
"#c3bedd",
"#f1d5e4",
"#cae1d3",
"#f3c89d",
"#d0b0c3",
"#819d53",
"#c99294",
"#cec884",
"#ff8e70",
"#e0a111",
"#fffdf6",
"#cbd7ac",
"#e8c6c0",
"#dc9898",
"#ecc8ba",
]; //用来设置的颜色
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
let count = 1;
var ww = window.innerWidth;
var wh = window.innerHeight;
var hearts = [];
function init() {
requestAnimationFrame(render);
canvas.width = ww;
canvas.height = wh;
for (var i = 0; i < 100; i++) {
hearts.push(new Heart());
}
}
function Heart() {
this.x = Math.random() * ww;
this.y = Math.random() * wh;
this.opacity = Math.random() * 0.5 + 0.5;
this.vel = {
x: (Math.random() - 0.5) * 4,
y: (Math.random() - 0.5) * 4,
};
this.targetScale = Math.random() * 0.15 + 0.02;
this.scale = this.targetScale * Math.random();
}
Heart.prototype.update = function (i) {
this.x += this.vel.x;
this.y += this.vel.y;
this.scale += (this.targetScale - this.scale) * 0.01;
if (this.x - this.width > ww || this.x + this.width < 0) {
this.scale = 0;
this.x = Math.random() * ww;
}
if (this.y - this.height > wh || this.y + this.height < 0) {
this.scale = 0;
this.y = Math.random() * wh;
}
this.width = 473.8;
this.height = 408.6;
};
Heart.prototype.draw = function (i) {
ctx.globalAlpha = this.opacity;
ctx.font = `${180 * this.scale}px "微软雅黑"`;
// ctx.font="20px";
ctx.fillStyle = colors[i % 18];
ctx.fillText(
"木易巷",
this.x - this.width * 0.5,
this.y - this.height * 0.5,
this.width,
this.height
);
// ctx.drawImage(
// heartImage,
// this.x - this.width * 0.5,
// this.y - this.height * 0.5,
// this.width,
// this.height
// );
};
function render() {
ctx.clearRect(0, 0, ww, wh);
// ctx.globalAlpha = 1;
// ctx.fillStyle = "rgba(255,255,255,0.3)";
// ctx.fillRect(0, 0, ww, wh);
for (var i = 0; i < 100; i++) {
hearts[i].update(i);
hearts[i].draw(i);
}
requestAnimationFrame(render);
}
init();
// var heartImage = new Image();
// heartImage.onload = init();
// heartImage.src =
// "data:image/svg+xml;base64,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";
window.addEventListener("resize", function () {
ww = window.innerWidth;
wh = window.innerHeight;
});
</SCRIPT>
<SCRIPT>
/*
* Settings
*/
var settings = {
particles: {
length: 500, // maximum amount of particles-最大颗粒量
duration: 2, // particle duration in sec-粒子持续时间(秒)
velocity: 100, // particle velocity in pixels/sec-粒子速度(像素/秒)
effect: -0.75, // play with this for a nice effect-玩这个会有很好的效果
size: 30, // particle size in pixels-颗粒尺寸(像素)
},
};
/*
* RequestAnimationFrame polyfill
* 请求动画帧多边形填充，立即执行函数，当解析到这一行，代码立即执行，后面的括号可以传递参数
*/
(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
* 像素点的类，prototype可以给类中添加方法
*/
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
*粒子类
*/
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
* 粒子池类
*/
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
//绘制活性粒子
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
* 把它们放在一起，立即执行
* 执行行为：
* 1、渲染一个
*/
(function (canvas) {
//下面的canvas对象获取，由立即执行函数的参数传递了，不需要get获取
// var canvas = document.getElementById("pinkboard")
//获取上下文容器、new粒子池对象、定义变量粒子比率变量并赋值、定义事件变量
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
//定义得到像素点对象的方法，在下面虚拟画布中调用了该方法
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
);
}
function gradientColor(startColor, endColor, step) {
startRGB = colorRgb(startColor);//转换为rgb数组模式
startR = startRGB[0];
startG = startRGB[1];
startB = startRGB[2];
endRGB = colorRgb(endColor);
endR = endRGB[0];
endG = endRGB[1];
endB = endRGB[2];
sR = (endR - startR) / step;//总差值
sG = (endG - startG) / step;
sB = (endB - startB) / step;
var colorArr = [];
for (var i = 0; i < step; i++) {
//计算每一步的hex值
var hex = colorHex('rgb(' + parseInt((sR * i + startR)) + ',' + parseInt((sG * i + startG)) + ',' + parseInt((sB * i + startB)) + ')');
colorArr.push(hex);
}
return colorArr;
}
var colorRgb = function (sColor) {
var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
var sColor = sColor.toLowerCase();
if (sColor && reg.test(sColor)) {
if (sColor.length === 4) {
var sColorNew = "#";
for (var i = 1; i < 4; i += 1) {
sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1));
}
sColor = sColorNew;
}
//处理六位的颜色值
var sColorChange = [];
for (var i = 1; i < 7; i += 2) {
sColorChange.push(parseInt("0x" + sColor.slice(i, i + 2)));
}
return sColorChange;
} else {
return sColor;
}
}
// 将rgb表示方式转换为hex表示方式
var colorHex = function (rgb) {
var _this = rgb;
var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
if (/^(rgb|RGB)/.test(_this)) {
var aColor = _this.replace('rgb', "").replace('(', "").replace(')', "").split(",");
var strHex = "#";
for (var i = 0; i < aColor.length; i++) {
var hex = Number(aColor[i]).toString(16);
hex = hex < 10 ? 0 + '' + hex : hex;// 保证每个rgb的值为2位
if (hex === "0") {
hex += hex;
}
strHex += hex;
}
if (strHex.length !== 7) {
strHex = _this;
}
return strHex;
} else if (reg.test(_this)) {
var aNum = _this.replace(/#/, "").split("");
if (aNum.length === 6) {
return _this;
} else if (aNum.length === 3) {
var numHex = "#";
for (var i = 0; i < aNum.length; i += 1) {
numHex += (aNum[i] + aNum[i]);
}
return numHex;
}
} else {
return _this;
}
}
var weight = 20;
var colorArrAsc = gradientColor('#FF0000', '#0000FF', weight);
var colorArrDesc = gradientColor('#0000FF', '#FF0000', weight);
// alert(weight + ',' + colorArrAsc.length + ',' + colorArrDesc.length);
//用来设置的颜色\
// creating the particle image using a dummy canvas
//使用虚拟画布创建粒子图像，返回了图像的像素点
function getImageAsc(i) {
var canvas = document.createElement("canvas");
var context = canvas.getContext("2d");
canvas.width = settings.particles.size;
canvas.height = settings.particles.size;
// helper function to create the path
// Helper函数来创建路径
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
//创建路径
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
//创建填充
context.fillStyle = colorArrAsc[i % (weight+1)];
// alert('asc,'+(i % weight));
context.fill();
// create the image
var image = new Image();
image.src = canvas.toDataURL();
return image;
};
function getImageDesc(i) {
var canvas = document.createElement("canvas");
var context = canvas.getContext("2d");
canvas.width = settings.particles.size;
canvas.height = settings.particles.size;
// helper function to create the path
// Helper函数来创建路径
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
//创建路径
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
//创建填充
context.fillStyle = colorArrDesc[i % (weight+1)];
// alert('desc,'+(i % (weight+1));
context.fill();
// create the image
var image = new Image();
image.src = canvas.toDataURL();
return image;
};
var image1 = getImageAsc(0);
// render that thing!
//定义了一个渲染的方法，使用渲染器，渲染这些点
function render() {
// next animation frame
//下一个动画帧
requestAnimationFrame(render);
// update time
//更新时间，
var newTime = new Date().getTime() / 1000,
deltaTime = newTime - (time || newTime);
time = newTime;
// alert(newTime);
// clear canvas
//在给定矩形内清空一个矩形：
context.clearRect(0, 0, canvas.width, canvas.height);
// create new particles
// 创建新粒子
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, image1);
}
// handle (re-)sizing of the canvas
//定义一个方法，初始化画布的大小
function onResize() {
canvas.width = canvas.clientWidth;
canvas.height = canvas.clientHeight;
}
window.onresize = onResize;
// delay rendering bootstrap
//定义一个延迟呈现引导的方法，10微秒后重设画布，并且重新渲染，模拟心跳的效果
setTimeout(function () {
onResize();
render();
}, 10);
var x = 0
setInterval(function () {
if (x <= weight) {
image1 = getImageAsc(x);
}
if (x > weight && x < 2 * weight) {
image1 = getImageDesc(x - weight)
}
if (x == 2 * weight) {
image1 = getImageDesc(x - weight)
x = 0;
}
x++;
}, 1000);
})
(document.getElementById("pinkboard"));
</SCRIPT>
<script>
</script>
</BODY>
</HTML>
好啦，本次分享就到这里，祝大家开心~
最后
博主为人老实，无偿解答问题，也会录制一些学习视频❤
如果对您有帮助，希望能给个👍/评论/收藏
您的三连~是对我创作最大的动力支持
本文转载自: https://blog.csdn.net/qq_44794321/article/details/127736297
版权归原作者 木易巷 所有， 如有侵权，请联系我们删除。
版权归原作者 木易巷 所有， 如有侵权，请联系我们删除。