I'm really looking forward to trying it out.  It was a tad slow
downloading, but I'm sure it'll be worth the wait.

You mention on that page that uv mapping will be included in official
3.5 with some modifications.  You may recall that I had a problem with
the uv mapping of bezier patches.  One that I haven't been able to
resolve is that I can only specify 2 uv vectors, but the software I am
trying to convert from uses 4 - one for each corner of the patch (it
actually allows for 12, but 4 is enough).

Where the problem seems to arise is that a patch can effectively have a
u_start 0 and u_end 1 on one side of a patch and u_start 0, u_end .5 on
the other.  I think there are also some ambiguities, as I am getting
some rotation for some reason.

Also, the convention seems to be to match up texture coordinates to that
of an image, where the values start at 0 in the top left corner and end
at the bottom right.  For a left handed coordinate system like POV's, it
also seems typical to make the patch uv coordinate follow the same
pattern, where <0,0> matches point 1, <0,1> matches cp 13, <1,0> matches
cp 4, and <1,1> matches cp 16. 

I'm just wondering if this is going to be adressed before it becomes
official.  Might want to pass it along to Chris Young if not.

Nathan Kopp wrote:
> 
> The newest version of UVPov (alpha 4) is now available.  This version includes
> photon mapping.  You can download the source code, but it is not very pretty
> right now.  Also, just yesterday I fixed a bug that caused an access violation
> crash when I tried to render the splash screen, and there might be more such
> bugs.  There's your warning.
> 
> Also, the syntax is bound to change, so just use this to play around with it
> and test it.  Documentation is not included in the zip file, so you'll have to
> read the webpage if you want to know how to make it work.
> 
> Oh, and the web site might be slow (it's been REALLY slow for me today).
> 
> With that said, here's the web site:
> http://nathan.kopp.com/patched.htm
> 
> Have fun!
> 
> -Nathan Kopp

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