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Deltographos::Blog

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Color Flow

float i,j,d=.1,e; vec3 p;
for(i=0.;i++<64.&&d>1e-4;){
    p=vec3((FC.xy-.5*r)/r.y,1)*12.;
    p.z-=4.;
    for(j=0.;j++<4.;)
        p=abs(p/d)*rotate3D(t,vec3((p.z),(p.x),(p.y))),
        d=max(cos(length(p.xy)),tan(length(p.zy)))/d,
        d-=dot(p,p)/1e4;
    e+=d;
}o+=vec4(exp(p),1)*3./i;
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