😍😍😍😍😍😍春天来了~没有表白的同学赶紧来学技术，去收获女神的芳心了！！！

静态效果图：

设置爱心的基础属性

❤️❤️❤️标题“爱心黑洞”

 <div style="color : red; font-size : 50px;  
 text-align : center; line-height : 150px;">爱心黑洞</div>

效果：

🎈length: 1314------小心心数量
🎈duration: 3------离子间距
🎈velocity:520------移动速度
🎈effect: -0.75------方向（朝内）
🎈size: 60------像素

var settings = {
  particles: {
    length:   1314, 
    duration:   3, 
    velocity: 520, 
    effect: -0.75, 
    size:      60, 
  },
};

主函数

(
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)}
}
}());

点类

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;
})();

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;
})();

粒子容器类

var ParticlePool = (function() {
  var particles,
      firstActive = 0,
      firstFree   = 0,
      duration    = settings.particles.duration;
  
  function ParticlePool(length) {
    // 创建和填充粒子容器
    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);
    
    // 处理循环队列
    firstFree++;
    if (firstFree   == particles.length) firstFree   = 0;
    if (firstActive == firstFree       ) firstActive++;
    if (firstActive == particles.length) firstActive = 0;
  };
  ParticlePool.prototype.update = function(deltaTime) {
    var i;
    
    // 更新活动的粒子
    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);
    }
      // 移除不活跃粒子
    while (particles[firstActive].age >= duration && firstActive != firstFree) {
      firstActive++;
      if (firstActive == particles.length) firstActive = 0;
    }
    
    
  };
  ParticlePool.prototype.draw = function(context, image) {
    // 刻画活跃例子
    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;
})();

整合

(function(canvas) {
  var context = canvas.getContext('2d'),
      particles = new ParticlePool(settings.particles.length),
      particleRate = settings.particles.length / settings.particles.duration, // particles/sec
      time;
  
  // 把重心点放在 -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
    );
  }
  
  // 使用虚拟画布创造粒子图片
  var image = (function() {
    var canvas  = document.createElement('canvas'),
        context = canvas.getContext('2d');
    canvas.width  = settings.particles.size;
    canvas.height = settings.particles.size;
    // 帮助函数创造路径
    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;
    }
    // 创造路径
    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();
    // 填充
    context.fillStyle = '#ea80b0';
    context.fill();
    // 创造图片
    var image = new Image();
    image.src = canvas.toDataURL();
    return image;
  })();

渲染

 function render() {
    //下一个活跃框架
    requestAnimationFrame(render);
    
    // 更新时间
    var newTime   = new Date().getTime() / 1000,
        deltaTime = newTime - (time || newTime);
    time = newTime;
    
    //清理画布
    context.clearRect(0, 0, canvas.width, canvas.height);
    
    // 创建新的小心心函数
    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);
    }
    
    //更新
    particles.update(deltaTime);
    particles.draw(context, image);
  }
  
  // 画布尺寸
  function onResize() {
    canvas.width  = canvas.clientWidth;
    canvas.height = canvas.clientHeight;
  }
  window.onresize = onResize;
  
  // 出现时间
  setTimeout(function() {
    onResize();
    render();
  }, 10);
})(document.getElementById('pinkboard'));

动态效果：

源代码链接：
链接：https://pan.baidu.com/s/1QB299kKnyR8Kp5HR6vtRUQ
提取码：9527

多谢大家支持~🎈❤️