Room lighting via radiosity from one sphere.  Uses 3.5

(This kind of realism [imho] kind of makes me afraid to try my
realism-be-danged blobby characters in it.)

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Any possibility of getting the code for the sphere in the back? I'd like to
play around with it.

-Ed

"Greg M. Johnson" <"gregj56590[:-0]"@aol.com> wrote in message
news:3BCF46B2.FD6D2E4A@aol.com...
> Room lighting via radiosity from one sphere.  Uses 3.5
>
> (This kind of realism [imho] kind of makes me afraid to try my
> realism-be-danged blobby characters in it.)
>
>


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It was not invented by me and I apologize that I forgot who did it.

#declare Gball = union{
        //sphere { 0, 1 }
        #declare N = 150;               //arbitrary 150422;
        #declare nn = 0;               //arbitrary 150422;
        #declare R = 1/sqrt(N); //also arbitrary
        #declare Theta = 0;
//        #declare H = (N-1)/N;   //I dunno which of these makes a better
pattern.
      #declare H = 1;                 //There's a logical argument for either.
        #while (H >= -1)
                #declare Phi = degrees(acos(H));

                sphere { <0,1,0>, R*2
                        rotate <Phi, Theta, 0>
                        inverse
                pigment{color rgb nn/150}
                finish{reflection 0.2}
                        }
                #declare H = H - 2/N;
                #declare Theta = mod (Theta + 137.5077641, 360);
                #declare nn=nn+1;
        #end
        texture {Tex_2 }
        }


#object {Gball
        rotate <0,0,0>
        translate <3,0,3>}

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