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26 lines
1.5 KiB
JavaScript
26 lines
1.5 KiB
JavaScript
// ostrich running in place: long pink legs cycling, fluffy body bouncing, neck bobbing with each stride
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const{sin,cos,PI,sqrt,max,min,hypot}=Math,T=2*PI
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export const frames=24,delay=60
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const B='#b48cff',L='#dac6ff',P='#ff85a8',Q='#ffc2d4',D='#2b2633'
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export default(c,t)=>{
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const f=2*T*t,bob=4*cos(2*f),hx=126,hy=136+bob
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const fill=(col,g)=>{c.fillStyle=c.strokeStyle=col;c.lineWidth=6;c.beginPath();g();c.fill();c.stroke()}
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const leg=(ph,col)=>{
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const fx=hx+28*cos(ph),fy=224-16*max(0,sin(ph)),dx=fx-hx,dy=fy-hy,d=min(hypot(dx,dy),92),h=sqrt(max(0,46*46-(d/2)**2))
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const ux=dx/hypot(dx,dy),uy=dy/hypot(dx,dy),kx=hx+ux*d/2-uy*h,ky=hy+uy*d/2+ux*h
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c.strokeStyle=col;c.lineWidth=9;c.lineCap=c.lineJoin='round'
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c.beginPath();c.moveTo(hx,hy);c.lineTo(kx,ky);c.lineTo(fx,fy);c.lineTo(fx+14,fy);c.stroke()
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}
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leg(f+PI,Q);leg(f,P)
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c.translate(0,bob)
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for(const[x,y,r]of[[58,96,16],[50,116,14],[64,124,13]])fill(L,()=>c.arc(x,y,r,0,T))
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fill(B,()=>{c.ellipse(118,112,54,34,-.08,0,T);for(let x=78;x<=158;x+=16)c.moveTo(x+13,138-(x-118)*.08),c.arc(x,138-(x-118)*.08,13,0,T)})
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fill(L,()=>c.ellipse(112,108,30,16,-.15,0,T))
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const nx=176+5*sin(2*f),ny=40
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c.strokeStyle=P;c.lineWidth=12;c.lineCap='round'
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c.beginPath();c.moveTo(152,100);c.quadraticCurveTo(170,70,nx,ny+12);c.stroke()
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fill(P,()=>c.ellipse(nx,ny,15,12,0,0,T))
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fill(P,()=>{c.moveTo(nx+10,ny-2);c.lineTo(nx+26,ny+3);c.lineTo(nx+10,ny+7);c.closePath()})
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c.fillStyle=D;c.beginPath();c.arc(nx+3,ny-3,4.5,0,T);c.fill()
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}
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