> Hi everyone,
> Despite I'm lucky enough to be able to use Pov-Ray at my work almost every day,
> I haven't had time to play with it personally since probably more than a year.
> Finally last month has been quiet enough to let me achieve one of the things I
> wanted to do since eternity: reproduce a lithography of Escher.
> I've chosen the House of Stairs. My final result has several differences from
> the original one but I'm really happy with it. Differences come from incoherence
> in his lithography. Not to satisfy some optical illusion like his infinite
> staircase, but real mistakes I believe. This lithography is so complex that
> thinking of him doing it with only a pencil and a ruler... we can't blame it !
> The lighting to is unrealistic, but I think he was more attached to the
> aesthetic on this point. I could have cheated to get closer to his result, but
> I've chosen to remain faithful to the underlying mathematical model (according
> to my hypothesis): the House is made of one quarter repeated by rotation and
> horizontal symmetry. With a camera's type set to cylinder it works perfectly !
> About lighting, I've kept his idea of light entering from outside through wall's
> doors, and tuned it freely until it pleases me. It lacks the "Curl-ups", which I
> definitely want to add, when I'll find time for that... Different points of view
> and a video are also tempting me.
> 
> 

Nice and impressive.
Very well done.

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