I've just downloaded pov 3.1 and got possibly a little too excited about
the new media feature. I thought that it would be possible (using a scaled
sphere and interior) to produce wispy bozo clouds in 3d. The problem is
that when I enter a transparency value in the density color_map the
renderer completely ignores it and uses only the red green and blue values.
Am I doing something wrong or is there a way around this problem?
Andrew Clinton
The POV Place - http://www3.sympatico.ca/dclinton/pov/povplace.htm
From: Dan Connelly
Subject: Re: Transparency bug in POV 3.1?
Date: 14 Aug 1998 20:59:15
Message: <35D4CF3E.7ABB32F0@flash.net>
It's in the documentation. It's the way it's supposed to
behave -- it isn't of the same form as halos.
Dan
Andrew Clinton wrote:
> > I've just downloaded pov 3.1 and got possibly a little too excited about> the new media feature. I thought that it would be possible (using a scaled> sphere and interior) to produce wispy bozo clouds in 3d. The problem is> that when I enter a transparency value in the density color_map the> renderer completely ignores it and uses only the red green and blue values.> Am I doing something wrong or is there a way around this problem?> > Andrew Clinton> The POV Place - http://www3.sympatico.ca/dclinton/pov/povplace.htm
--
http://www.flash.net/~djconnel/
Hi Andrew,
Sounds like you're trying to do the same thing as me. I have had limited
success so far in building clouds using the media of v3.1 - have a look at my
'Hazy Days ...' posts on p.b.i and the source on p.t.s-f if you want to see how
I'm going about it.
One thing you need to remember with density maps - you are actually
defining the optical density in each of the red, green and blue with 1 being
brightly emmiting/highly absorbing/hugely scattering media and 0 being
transparent; filter and transparency have _NO_ effect.
Hope this helps,
Mike Andrews.
Andrew Clinton wrote:
> I've just downloaded pov 3.1 and got possibly a little too excited about> the new media feature. I thought that it would be possible (using a scaled> sphere and interior) to produce wispy bozo clouds in 3d. The problem is> that when I enter a transparency value in the density color_map the> renderer completely ignores it and uses only the red green and blue values.> Am I doing something wrong or is there a way around this problem?>> Andrew Clinton> The POV Place - http://www3.sympatico.ca/dclinton/pov/povplace.htm
