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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>爱你三千遍</title>
<style>
html, body {
height: 100%;
padding: 0;
margin: 0;
/* 修改下面的值可以改变背景颜色 */
/* background: #000000; */
background: url(https://i.imgtg.com/2022/11/17/t4T7b.jpg) no-repeat center center;
background-size: cover;
height: 100vh;
}
body::after {
content: '';
display: block;
position: absolute;
width: 100%;
height: 100vh;
-webkit-background-color: rgba(0, 0, 0, .5);
background-color: rgba(0, 0, 0, 0.27);
}
canvas {
position: absolute;
width: 100%;
height: 100%;
}</style>
</head>
<body>
<canvas id="pinkboard"></canvas>
<script>
/*
* Settings
*/
var words_attr = [];
var words = []
var name = '我爱你'; // 洋子:修改周边漂浮的文字 名字
var name2 = '小白'; // 洋子:在中心的名字
var count = '50'; // 洋子:修改漂浮文字数量
var nameHeartFont = "50px "; // 洋子:修改数值则修改中心名字的大小
var myfont = " Times New Roman "; //洋子:改成你电脑上有的字体
var nameFlowColor = '#fc7f82'; // 飘动名字的颜色,#cc0000为红色。#ffffff是白色。#ffff00是黄色
// var nameFlowColor = '#ffc0cb'; // 飘动名字的颜色,#cc0000为红色。#ffffff是白色。#ffff00是黄色
var nameHeartColor = '#fc7f82'; // 爱心名字的颜色,#cc0000为红色
// var nameHeartColor = '#ffc0cb'; // 爱心名字的颜色,#cc0000为红色
for (var i=0; i<count; i++) {
words.push(name);
}
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 = '#FFC0CB';
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);
context.font = "50px 微软雅黑";
context.fillStyle = nameHeartColor;
// 计算字体长度
context.fillText(name2, canvas.width/2-24*name2.length, canvas.height/2-24);
for (var i=0; i<words_attr.length; i++) {
context.font = words_attr[i].font;
context.fillStyle = nameFlowColor;
// console.log("words_attr[i].x = ", words_attr[i].x, " words_attr[i].y = ", words_attr[i].y)
// 飘屏文字
context.fillText(words_attr[i].text, words_attr[i].x, words_attr[i].y);
context.stroke();
}
for (var i=0; i<words_attr.length; i++) {
if (words_attr[i].x > canvas.width || words_attr[i].x<0) {
words_attr[i].speed = -words_attr[i].speed;
}
words_attr[i].x += words_attr[i].speed;
}
// console.log("words_attr = ", words_attr);
// 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() {
// console.log(document.body.clientWidth())
Word = function(key) {
this.text = key;
// console.log("canvas.width = ", canvas.width, "canvas.height = ", canvas.height)
this.x = Math.random() * canvas.width;
this.y = Math.random() * document.body.clientHeight;
// console.log("this.x = ", this.x, "this.y = ", this.y)
this.font = Math.random() * 50 + 'px ' + myfont;
this.speed = Math.random() * 4;
}
for (var i=0; i<words.length; i++) {
words_attr.push(new Word(words[i]));
}
onResize();
render();
}, 10);
})(document.getElementById('pinkboard'));</script>
</body>
</html>
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