套用黑黑老师的代码

有声有色 发表于 2022-8-23 11:42

本帖最后由有声有色于 2025-9-7 10:18 编辑 <br /><br /><style>
#papa { left: -214px; width: 1024px; height: 640px; display: grid; place-items: center; background: #000 url('https://pic1.imgdb.cn/item/6699ced4d9c307b7e9838763.png') no-repeat center/cover; box-shadow: 3px 3px 30px #000; position: relative; }
#canv { position: relative; top: 0; left: 0; opacity: .65; }
#disc { position: absolute; width: 40px; height: 40px; left: 10px; top: 10px; background: conic-gradient(red,orange,yellow,green,teal,blue,purple); mask: radial-gradient(transparent 4px,red 0); -webkit-mask: radial-gradient(transparent 4px,red 0); border-radius: 50%; cursor: pointer; z-index: 10; animation: rot 2s linear infinite; }
#lrcbox { position: absolute; left: 60px; top: 10px;font: bold 22px / 40px sans-serif; color: lightblue; text-shadow: 2px 2px 4px #222; }
@keyframes rot { to { transform: rotate(360deg); } }
</style>
</head>
<body>

<div id="papa">
   <span id="disc"></span>
   <span id="lrcbox">看着我的眼睛</span>
   <canvas id="canv" width="1024" height="640"></canvas>
</div>

<script>
let ctx = canv.getContext('2d');
let w = canv.width,
   h = canv.height,
   tick = 0,
   particles = [];
let opts = {
   baseBaseSize: 15,
   addedBaseSize: 5,
   baseVel: 2,
   addedVel: 1,
   baseTime: 60,
   addedTime: 20,
   overTime: 5,
   sliding: .99,
   particleChance: .9,
   particles: 100,
   templateParticleColor: 'hsla(hue,80%,40%,alp)',
   repaintAlpha: 'rgba(0,0,0,.1)',
   startColor: .2,
   fullColor: .5,
   stopColor: .6,
   timeToColorChange: 3
};
let aud = new Audio();
aud.src = 'https://music.163.com/song/media/outer/url?id=1906487836.mp3';
aud.loop = true;
aud.autoplay = true;
disc.style.animationPlayState = aud.paused ? 'paused' : 'running';
disc.onclick = () => aud.paused ? aud.play() : aud.pause();
aud.addEventListener('playing', () => disc.style.animationPlayState = 'running');
aud.addEventListener('pause', () => disc.style.animationPlayState = 'paused');

function Particle() {
   this.reset();
}
Particle.prototype.reset = function() {
   this.x = Math.pow(Math.random(), 1 / 4);
   this.y = h / 2;
   var color = opts.templateParticleColor.replace('hue', this.x * 360 * 2 + tick * opts.timeToColorChange);
   this.baseSize = (Math.random() + this.x) / 2 * (opts.baseBaseSize + opts.addedBaseSize * Math.random());
   this.gradient = ctx.createRadialGradient(0, 0, 0, 0, 0, this.baseSize / 2);
   this.gradient.addColorStop(opts.startColor, color.replace('alp', 0));
   this.gradient.addColorStop(opts.fullColor, color.replace('alp', 1));
   this.gradient.addColorStop(opts.stopColor, color.replace('alp', 1));
   this.gradient.addColorStop(1, color.replace('alp', 0));
   this.vx = -(1 + Math.random() / 10 - this.x) * (opts.baseVel + Math.random() * opts.addedVel);
   this.vy = Math.pow(this.x, 4) * (opts.baseVel + Math.random() * opts.addedVel) * (Math.random() < .5 ? -1 : 1);
   this.x *= w / 2;
   if (Math.random() < .5) {
            this.x = w - this.x;
            this.vx *= -1;
   }
   this.time = opts.baseTime + opts.addedTime * Math.random();
   this.tick = this.time + opts.overTime;
};
Particle.prototype.step = function() {
   var size;
   if (this.tick <= this.time) {
            this.x += this.vx *= opts.sliding;
            this.y += this.vy *= opts.sliding;
            size = Math.pow(this.tick / this.time, 1 / 2)
   } else size = 1 - ((this.tick - this.time) / opts.overTime) + .000001;
   --this.tick;
   ctx.translate(this.x, this.y);
   ctx.scale(size, size);
   ctx.fillStyle = this.gradient;
   ctx.fillRect(-this.baseSize / 2, -this.baseSize / 2, this.baseSize, this.baseSize);
   ctx.scale(1 / size, 1 / size);
   ctx.translate(-this.x, -this.y);
   if (this.tick <= 0) this.reset();
};
(function anim() {
   window.requestAnimationFrame(anim);
   ctx.globalCompositeOperation = 'source-over';
   ctx.fillStyle = opts.repaintAlpha;
   ctx.fillRect(0, 0, w, h);
   ctx.globalCompositeOperation = 'lighter';
   ++tick;
   if (particles.length < opts.particles && Math.random() < opts.particleChance) particles.push(new Particle);
   particles.map(function(particle) {
            particle.step();
   });
})();
</script>

红影发表于 2022-8-23 12:17

这双眼睛很灵动。欣赏有声有色好帖{:4_187:}

马黑黑 发表于 2022-8-23 13:01

很有想象力！赞！

有声有色 发表于 2022-8-23 13:02

红影发表于 2022-8-23 12:17
这双眼睛很灵动。欣赏有声有色好帖

突发奇想

有声有色 发表于 2022-8-23 14:16

马黑黑发表于 2022-8-23 13:01
很有想象力！赞！

谢谢老师鼓励

红影发表于 2022-8-23 17:05

有声有色发表于 2022-8-23 13:02
突发奇想

这个效果加上去了，感觉好奇妙{:4_204:}

有声有色 发表于 2022-8-23 17:19

红影发表于 2022-8-23 17:05
这个效果加上去了，感觉好奇妙

我是瞎蒙的，想不到效果还不错

马黑黑 发表于 2022-8-23 17:28

有声有色发表于 2022-8-23 14:16
谢谢老师鼓励

{:4_190:}

红影发表于 2022-8-23 21:03

有声有色发表于 2022-8-23 17:19
我是瞎蒙的，想不到效果还不错

是啊，很美{:4_187:}

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套用黑黑老师的代码