t=0,draw=e=>{for(t||createCanvas(W=720,W),noFill(H=W/2),stroke(0),background(255),translate(H,H),u=v=0,step=192,i=0;i<1;i+=.05)for(a=0;a<step;++a)x=cos(TAU*(a+i)/step)*H*tan(t+i),y=sin(TAU*(a-i)/step)*H*tan(i),a%6!=0&&line(u,v,x,y),u=x,v=y;t+=.01};// #つぶやきProcessing #CreativeCoding