Metsuke (めつけ)

for(float e,i,a,g,h;i++<99.;){vec3 p=vec3((FC.xy-r)/r*g+3.,g);p.zx*=rotate2D(a);e=p.y;h=e;for(a=.8;a>.01;a*=.8)p.xz*=rotate2D(4.),e-=exp(sin(p.z/a+t)-3.)*a,h+=abs(dot(sin(p.zx/a*.3)*a,r/r));g+=e=min(e,h*.4-1.);o.rgb+=.01-.04/exp(max(s,e)*8e3)/h*hsv(g/i*.5,.16*h,1.);}#つぶやきGLSL