Stress Spiral!
#p5t #つぶやきProcessing

Stress Spiral!

t=0
draw=_=>{t+=.04
createCanvas(w=500,w)
fill('#ff8')
beginShape(s=99)
l=Array(s).fill(0)
for(i=0;i<s*s;i++)l.push(l[i]+60*noise(i/40,sin(t),cos(t))*min(i/s,1))
strokeWeight(12)
stroke('#e31')
for(i=0;i<s*s;i++)vertex(w/2+cos(a=i*(TAU/s)-t)*l[i],w/2+sin(a)*l[i])
endShape()}