Mike Williams wrote:

> Instead of adding a new sphere for each iteration of the strange attractor,
> if there already was a sphere at a point I just changed its pigment to make
> it brighter. 

You added a "measure."  Nice!

How did you decide whether there already was a sphere at a point?  I 
mean, what did the POV code look like for that?  I've been trying to do 
this, but my solutions are always very inefficient.  I'm guessing that 
you store the locations in an array and compare (?)

Thanks

Dave Matthews

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