“#つぶやきGLSL https://t.co/DJz37Mx6gK vec2 n,q,p=(FC.xy-.5*r)/r.y; float d=dot(p,p),S=9.,i,a,j; for(mat2 m=rotate2D(5.);j++<30.;){ p*=m; n*=m; q=p*S+t*4.+sin(t*4.-d*6.)*.8+j+n; a+=dot(cos(q)/S,vec2(.2)); n-=sin(q); S*=1.2; } o+=(a+.2)*vec4(4,2,1,0)+a+a-d;”