I've been working on a macro that takes a two dimensional array of floats
and constructs a bicubic patchwork smooth surface from them. I would very
much like to have others look it over for bugs or useability problems.

Here's the link: http://will.thornhenge.net/bigpatch/. The download is a
small zip file (under 10 k). There is also a little more info about the
BigPatch macro on the web site.

TIA,

--
Will Woodhull
Thornhenge, SW Oregon, USA
willl.at.thornhenge.net

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"Will W" <wil### [at] NOSPAMwizzardsnet> wrote in news:3e83fb9a@news.povray.org:

> I've been working on a macro that takes a two dimensional array of floats
> and constructs a bicubic patchwork smooth surface from them. I would very
> much like to have others look it over for bugs or useability problems.
> 
> Here's the link: http://will.thornhenge.net/bigpatch/. The download is a
> small zip file (under 10 k). There is also a little more info about the
> BigPatch macro on the web site.


Will,

I just had a very brief look at your bigPatch macro.

And I wonder if you forgot some parenthesis in these two
statements:

#local dX = toPt.x-fromPt.x/Cols; 
#local dZ = toPt.z-fromPt.z/Rows;

I suspect that it should be like this:

#local dX = (toPt.x - fromPt.x)/Cols; 
#local dZ = (toPt.z - fromPt.z)/Rows;


Note that the link you gave in the readme.txt file does
not work:

http://PovDolls.thornhenge.net/BigPatch/


If you are interested in getting an impression of how
(some) POV-people look at commercialized pov utilities,
then I recommend that you skim through this thread:

http://news.povray.org/povray.general/28215/

(It is quite long; 73 posts)


Tor Olav

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Thanks, Tor.

I apparently blew off those parens in the final stages of clean-up. I
sometimes do a lot of stupid things at that stage-- ususally I catch them
when the code fails my final tests. This time I was using a test object that
just happened to be a special case that worked in spite of this screw-up.
There's always something.

I've corrected a few other bugs yesterday and will be putting up the
corrected code in a couple of hours. There is a dog with soulful eyes
begging for his morning walk...

Also thank you very much for the link to the discussion on licensing. I
skimmed through enough of it before bedtime last night to know I need to
study it more thoroughly. I am awae that it is not going to be easy to word
the TOS I want. I do want people to feel free to use this work in any
non-commercial way, and feel free to modify or extend it as well. But I want
to preserve my legal options if I find some company with $40 billion in
pocket change is ripping off my work-- that means a license written in such
a way that I could sell my rights to someone who got off on lawyer fights.
Of course I could just do the whole think as a .exe that could be called
from a .pov file, but that also is a disservice to the POV community in a
couple of ways. For one, there are a lot of neat ways my basic macro could
be extended by others, if it is supplied in the POV SDL. I really don't want
to lock it up.

One of the things I'm considering is accepting extensions or variants of the
macro as a form of payment. I'm not afraid of using my website as a library
for such things.

Thanks for pointing out the bad link, too.

More to come.


--
Will Woodhull
Thornhenge, SW Oregon, USA
willl.at.thornhenge.net



"Tor Olav Kristensen" <tor_olav_kCURLYAhotmail.com> wrote in message
news:Xns### [at] 204213191226...
> "Will W" <wil### [at] NOSPAMwizzardsnet> wrote in
news:3e83fb9a@news.povray.org:
>
> > I've been working on a macro that takes a two dimensional array of
floats

<snip>

> I just had a very brief look at your bigPatch macro.
>
> And I wonder if you forgot some parenthesis in these two
> statements:

<snip>

> #local dX = toPt.x-fromPt.x/Cols;
> #local dZ = toPt.z-fromPt.z/Rows;

<snip>

> Tor Olav

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