Files
vibegif.direct-img.link/gen/bw/drum/beat.js
T
multipleof4andClaude Opus 5.5 7108136edd Double the black-and-white section with 50 more stickers
Animals (mouse, sheep, cow, elephant, monkey, lion, sloth, bat, spider,
hedgehog, shark, seal, caterpillar, pigeon, koala, squirrel), weather
(snowman, tornado, wind, icicle), food (toaster, banana, lemon, cherry,
pudding, teapot, hot dog, lollipop, carrot, milk), objects (scissors,
padlock, candle, fan, gears, stapler, faucet, trash, tv, cursor) and toys
and symbols (yo-yo, spring, Newton's cradle, drum, trumpet, bowling,
basketball, skull, question mark, puzzle).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-22 23:48:07 +00:00

21 lines
1.3 KiB
JavaScript

// snare drum with two sticks taking turns hitting it, the head dipping and impact lines on every hit
const{sin,cos,PI,abs,max}=Math,T=2*PI
export const frames=20,delay=60
const D=(c,f,a=11,b=4)=>{for(const[l,s]of[[a,'#111'],[b,'#fff']])c.lineWidth=l,c.strokeStyle=s,c.beginPath(),f(),c.stroke();c.lineWidth=7;c.strokeStyle='#111'}
export default(c,t)=>{
const top=128,bot=192,rx=86,ry=26,h=[abs(sin(PI*t)),abs(cos(PI*t))]
const dip=4*max(0,1-Math.min(...h)/.25)
c.beginPath();c.moveTo(128-rx,top);c.lineTo(128-rx,bot);c.ellipse(128,bot,rx,ry,0,PI,0,true);c.lineTo(128+rx,top);c.closePath();c.fill();c.stroke()
c.lineWidth=5;for(const y of[top+12,bot-12])c.beginPath(),c.ellipse(128,y,rx,ry,0,.08,PI-.08),c.stroke()
c.lineWidth=4;c.beginPath()
for(let k=0;k<=8;k++){const x=52+k*19,e=Math.sqrt(1-((x-128)/rx)**2)*ry;c.lineTo(x,k%2?bot-12+e:top+12+e)}
c.stroke();c.lineWidth=7
c.beginPath();c.ellipse(128,top,rx,ry-dip,0,0,T);c.fill();c.stroke()
for(const d of[-1,1]){
const k=h[d<0?0:1],px=128+d*116,py=92,a=(d<0?.335:PI-.335)-d*.75*k,tx=px+cos(a)*97,ty=py+sin(a)*97
if(k<.2)for(const b of[-.7,0,.7])D(c,()=>{c.moveTo(tx+sin(b)*16,top-6-cos(b)*16);c.lineTo(tx+sin(b)*32,top-6-cos(b)*32)})
D(c,()=>{c.moveTo(px,py);c.lineTo(tx,ty)},17,8)
c.beginPath();c.ellipse(tx,ty,9,7,a,0,T);c.fill();c.stroke()
}
}