POV-Ray : Newsgroups : povray.binaries.images : Another first post... : Re: Another first post... Server Time
7 Nov 2024 07:31:07 EST (-0500)
  Re: Another first post...  
From: Jeremy M  Praay
Date: 18 Sep 2004 00:08:30
Message: <414bb4be$1@news.povray.org>
"frozen" <fro### [at] thefrozenno-ipcom> wrote in message 
news:web.414b28be90d95b221fc26f130@news.povray.org...
> "Fernando G. del Cueto" <fcu### [at] riceedu> wrote:
>> What program did you use for your trees?
>
> POV-Tree 1.5b by Gena Obukhov which uses the tree algorithm from Tom Aust
>
>>
>> As a side note, I recommend you use jpeg insted of gif. Gif has a 256
>> color limit that sucks for this kind of images.
>
> Okay, thanks! I forgot about the color limit... I will attach a 
> PNG-version.
>
>

I really like your idea for this scene!  :-)  Personally, I like the walls, 
but if you want to break it up a little, you could also add a door.  Just a 
thought.

The blades of grass seem a little bit large and/or thick.  I would try 
making them a little bit thinner (less wide), and maybe a little shorter. 
But again, that's up to you.

Referring to your response to Tim's post, it seems strange (to me) that this 
scene would take 8 hours to render on an Athlon 1800+ without any radiosity. 
Do you happen to have any complex (or somewhat complex) "difference" 
operations being performed on the walls?  Other than that, things like 
area_lights and focal blur would slow down a render, but it doesn't appear 
that you're using either of those.  If the walls are isosurfaces, that could 
also slow things down (not that iso-surfaces are a bad idea).

Also, make sure you have Gena's modified version of TomTree 
(http://propro.ru/go/Wshop/povtree/tomtree-1.5.zip).  It speeds up tree 
creation by quite a bit.


If you're relatively new to using radiosity, it's as simple as adding a 
couple lines of code to the global_settings section:
ambient_light off  //optional, but generally recommended for a scene like 
this
radiosity {count 100} // higher counts mean slower renders

Tweaking can always be done later.  I'm not sure what your current 
skill-level is, so I'm sorry if I'm oversimplifying something.  Radiosity is 
very difficult to master, but POV-Ray has an excellent tutorial on it.

I really like this scene though.  I'll be quite interested in seeing the 
final outcome.  Post it here when you're done!  I hope my suggestions have 
been helpful.

(Also, JPEG is the preferred method for posting here, simply because not 
everyone has broadband, I assume.)

-- 
Jeremy
www.beantoad.com

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