In article <3bf027bd@news.povray.org>, Wilson Reis <wil### [at] ismcombr>
wrote:

> I think Sascha used a trick which is quite similar to yours, perhaps you'd
> be interested in this link:  http...

I see.  Similar yet opposite.  He used a plane perpendicular to the
camera while I used a plane that intersects with the camera. 
(Perspective!)  I also recall seeing this image before and rendering it
a couple of times myself.  Never took the time to figure out exactly
what he did though.  I also recall seeing an animation of this once
where a perspective camera with a narrow angle slowly zoomed in until
it was a normal perspective.  Unfortunately, I have absolutely no idea
where I saw that.  Possibly about 2000 messages back in p.b.a?  I'll
take a look.

> And congratulations for the image :-)
> It's kinda tricky to manage those illusions, ahn?

Thanks.  Illusions are always fun to do in pov.  Drawing is one thing
but designing and programming them is always a challenge.

 - Rico

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