t=u=v=0,draw=o=>{for(t||(createCanvas(W=720,W,WEBGL),noFill(H=W/2),stroke(255,192)),background(0),rotate(t),i=-PI;i<=PI;i+=.05*PI)for(j=-PI;j<=PI;j+=.05*PI)a=atan2(j,i),x=cos(a+i)*sin(t+j)*H,y=sin(j-i)*cos(a+t)*H,line(x,y,u,v),u=x,v=y;t+=.01};// #つぶやきProcessing #CreativeCoding