域外之音
本帖最后由 马黑黑 于 2022-8-18 12:59 编辑 <br /><br /><style>#papa { left: -214px; width: 1024px; height: 640px; display: grid; place-items: center; background: #000 url('/data/attachment/forum/202208/18/125530ma3dvflfbv915vtw.jpg') 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">域外之音</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>
代码（全）：
<style>
#papa { left: -214px; width: 1024px; height: 640px; display: grid; place-items: center; background: #000 url('/data/attachment/forum/202208/18/125530ma3dvflfbv915vtw.jpg') 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">域外之音</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>
制作得很奇妙。漂亮的画面。我去睡觉了。这个音乐听了想休息了。{:5_110:} 哇，这个效果也漂亮，画布上作画真是变化无穷{:4_187:} 好玄妙的效果，黑黑真棒{:4_199:} 漂亮，漂亮，五彩缤纷真漂亮。 太袖奇了。这才是五彩斑斓！！ 樵歌 发表于 2022-8-18 16:47
太袖奇了。这才是五彩斑斓！！
你这神字竖不够长{:4_170:} 加林森 发表于 2022-8-18 13:55
制作得很奇妙。漂亮的画面。我去睡觉了。这个音乐听了想休息了。
天外的音乐可能你不习惯{:4_173:} 红影 发表于 2022-8-18 16:17
哇，这个效果也漂亮，画布上作画真是变化无穷
方寸之间有经纬 红影 发表于 2022-8-18 16:17
好玄妙的效果，黑黑真棒
果酱果酱 梦油 发表于 2022-8-18 16:20
漂亮，漂亮，五彩缤纷真漂亮。
{:4_189:} 马黑黑 发表于 2022-8-18 18:10
天外的音乐可能你不习惯
你能干，直接把我催眠了。 醉美水芙蓉 发表于 2022-8-18 18:53
欣赏学习黑黑老师漂亮的特效！
喝水{:4_190:} 加林森 发表于 2022-8-18 18:31
你能干，直接把我催眠了。
但这个不是摇篮曲 马黑黑 发表于 2022-8-18 19:11
但这个不是摇篮曲
心跳的感觉。 黑黑这个效果我以前H5播放器背景玩过的，非常漂亮的特效{:4_178:} 小辣椒 发表于 2022-8-18 20:32
黑黑这个效果我以前H5播放器背景玩过的，非常漂亮的特效
不过这是用JS+画布做的 马黑黑 发表于 2022-8-18 20:51
不过这是用JS+画布做的
你这个感觉可以加背景图片更加漂亮