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16 lines
659 B
JavaScript
16 lines
659 B
JavaScript
// loading ring of dots with a fading trail, and a little face in the middle watching it go round
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const{sin,cos,PI}=Math,T=2*PI
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export const delay=60
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export default(c,t)=>{
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const h=t*T
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c.lineWidth=5
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for(let k=0;k<10;k++){
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const a=k*T/10-PI/2,g=((t-k/10)%1+1)%1,r=5+13*(1-g)**1.6
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c.beginPath();c.arc(128+cos(a)*78,128+sin(a)*78,r,0,T);c.fill();c.stroke()
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}
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c.lineWidth=7;c.beginPath();c.arc(128,128,40,0,T);c.fill();c.stroke()
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const ex=cos(h-PI/2)*5,ey=sin(h-PI/2)*5
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c.fillStyle='#111';for(const d of[-1,1])c.beginPath(),c.arc(128+d*13+ex,122+ey,6,0,T),c.fill()
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c.lineWidth=5;c.beginPath();c.arc(128+ex*.5,140+ey*.5,6,0,T);c.stroke()
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}
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