https://twitter.com/zozuar/status/1446922093598322692

for(float i,j,g,e,s;i++<1e2;g+=e*.1){vec3 p=vec3((FC.xy-.5r)/r.yg,g-3.);p.yz*=rotate2D(5.);e=p.y;for(j=16.;j-->-2.;e+=min(0.,(cos(p.xsPI)-sin(p.zsPI))/s*.6))s=exp(j/2.-fract(t/PI)3.),p.xz=rotate2D(PI/3.);o+=exp(-e*1e3)/70.;} // https://bit.ly/3DoY8I5