Regardez d'abord l'effet :
puis regardez le code :
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>若隐若现的芯片</title>
<script src="https://unpkg.co/gsap@3/dist/gsap.min.js"></script>
<style>
body {
background-color: #000000;
overflow: hidden;
text-align:center;
display: flex;
align-items: center;
justify-content: center;
}
body,
html {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
svg {
width: 100%;
height: 100%;
visibility: hidden;
}
.ell, #ai {
fill: none;
}
</style>
</head>
<body>
<svg id="mainSVG" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 800 600">
<defs>
<linearGradient id="aiGrad" x1="513.98" y1="290" x2="479.72" y2="320" gradientUnits="userSpaceOnUse">
<stop offset="0" stop-color="#000" stop-opacity="0" />
<stop offset=".15" stop-color="#EF476F" />
<stop offset=".4" stop-color="#359eee" />
<stop offset=".6" stop-color="#03cea4" />
<stop offset=".78" stop-color="#FFC43D" />
<stop offset="1" stop-color="#000" stop-opacity="0" />
</linearGradient>
</defs>
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<ellipse class="ell" cx="400" cy="300" rx="80" ry="80" />
<path id="ai" opacity=0.85 d="m417.17,323.85h-34.34c-3.69,0-6.67-2.99-6.67-6.67v-34.34c0-3.69,2.99-6.67,6.67-6.67h34.34c3.69,0,6.67,2.99,6.67,6.67v34.34c0,3.69-2.99,6.67-6.67,6.67Zm-5.25-12.92v-21.85c0-.55-.45-1-1-1h-21.85c-.55,0-1,.45-1,1v21.85c0,.55.45,1,1,1h21.85c.55,0,1-.45,1-1Zm23.08-16.29h-11.15m-47.69,0h-11.15m70,10.73h-11.15m-47.69,0h-11.15m40.37,29.63v-11.15m0-47.69v-11.15m-10.73,70v-11.15m0-47.69v-11.15" stroke="url(#aiGrad)" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" />
</svg>
</body>
<script>
gsap.config({
trialWarn: false});
let select = s => document.querySelector(s),
toArray = s => gsap.utils.toArray(s),
mainSVG = select('#mainSVG'),
allEll = toArray('.ell'),
colorArr = ['#359EEE', '#FFC43D','#EF476F','#03CEA4']
let colorInterp = gsap.utils.interpolate(colorArr);
gsap.set(mainSVG, {
visibility: 'visible'
})
function animate (el, count) {
let tl = gsap.timeline({
defaults: {
ease: 'sine.inOut'
},
repeat: -1
});
gsap.set(el, {
opacity:1- count/(allEll.length),
stroke: colorInterp(count/(allEll.length))
})
tl.to(el, {
attr: {
ry: `-=${
count*2.3}`,
rx: `+=${
count*1.4}`
},
ease: 'sine.in'
})
.to(el, {
attr: {
ry: `+=${
count*2.3}`,
rx: `-=${
count*1.4}`
},
ease: 'sine'
})
.to(el, {
duration: 1,
rotation: -180,
transformOrigin: '50% 50%'
}, 0).timeScale(0.5)
}
allEll.forEach((c, i) => {
gsap.delayedCall(i/(allEll.length-1), animate, [c, i+1])
})
gsap.to('#aiGrad', {
duration: 4,
delay: 0.75,
attr: {
x1: '-=300',
x2: '-=300'
},
scale: 1.2,
transformOrigin: '50% 50%',
repeat: -1,
ease: 'none'
})
gsap.to('#ai', {
duration: 1,
scale: 1.1,
transformOrigin: '50% 50%',
repeat: -1,
yoyo: true,
ease: 'sine.inOut'
})
</script>
</html>