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These images are posted in order to illustrate a question I have regarding
megaPOV glows which is primarily directed at Chris Huff.
Chris, I have rendered an animation (2 stills attatched here). You'll notice
how, when glows become closer together, their light becomes brighter and
melts into a strong (in this case white) glow? I really like the fact that
this behaviour occurs. However, I have noticed that this behaviour is not
seen in the reflection on the floor plane. I was wondering if this could be
'fixed'?
BTW, I have posted the full anim in p.b.a
Thanks,
Andy Cocker
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Attachments:
Download 'GlowBoxAnim01.jpg' (7 KB)
Download 'GlowBoxAnim20.jpg' (6 KB)
Preview of image 'GlowBoxAnim01.jpg'
![GlowBoxAnim01.jpg](/povray.binaries.images/attachment/%3C3a2bb186%40news.povray.org%3E/GlowBoxAnim01.jpg?preview=1)
Preview of image 'GlowBoxAnim20.jpg'
![GlowBoxAnim20.jpg](/povray.binaries.images/attachment/%3C3a2bb186%40news.povray.org%3E/GlowBoxAnim20.jpg?preview=1)
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"Andy Cocker" <big### [at] mariner9 fsnet co uk> wrote :
>
> I really like the fact that
> this behaviour occurs.
I would like to see it the other way. If I want the lights to appear to
glob together, I can add more and/or bigger glows. I would, however, like to
be able to place many points of light in close proximity -without- them
globbing.
Perhaps a glob_on, glob_off switch?
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> Perhaps a glob_on, glob_off switch?
as long as it retains the 'glob' keyword :) - that would make a great
addition to the POVer's vocab!
--
Rick
Kitty5 WebDesign - http://www.kitty5.com
Hi-Impact web site design & database driven e-commerce
TEL : +44 (01625) 266358 - FAX : +44 (01625) 611913 - ICQ : 15776037
PGP Public Key
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x231E1CEA
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"Rick [Kitty5]" <ric### [at] kitty5 com> wrote :
>
> > Perhaps a glob_on, glob_off switch?
>
> as long as it retains the 'glob' keyword :) - that would make a great
> addition to the POVer's vocab!
Yeah! I kinda like "glob" too...
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Yeah, you're right... glob_options sound like a useful addition. :-) Just
make them globs reflect!!
All the best,
Andy Cocker
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Bill DeWitt wrote:
>
> Yeah! I kinda like "glob" too...
http://rt.cs.tu-berlin.de/cgi-bin/man2html.cgi/usr/man/man1/glob.1
:-)
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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In article <3a2bb3f7$1@news.povray.org>, "Bill DeWitt"
<bde### [at] cfl rr com> wrote:
> I would like to see it the other way. If I want the lights to appear
> to glob together, I can add more and/or bigger glows. I would,
> however, like to be able to place many points of light in close
> proximity -without- them globbing.
>
> Perhaps a glob_on, glob_off switch?
Erm, no. If you don't want them to "glob", just make them dimmer.
There isn't any special handling done to make them blob up like that,
they are simply additive, and doing anything different would be
difficult(probably more like impossible), unrealistic, and
unnecessary...since you can get the exact results you want by dimming
those specific glows.
--
Christopher James Huff
Personal: chr### [at] mac com, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tag povray org, http://tag.povray.org/
<><
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In article <3a2bb186@news.povray.org>, "Andy Cocker"
<big### [at] mariner9 fsnet co uk> wrote:
> Chris, I have rendered an animation (2 stills attatched here). You'll
> notice how, when glows become closer together, their light becomes
> brighter and melts into a strong (in this case white) glow? I really
> like the fact that this behaviour occurs. However, I have noticed
> that this behaviour is not seen in the reflection on the floor plane.
> I was wondering if this could be 'fixed'?
Try making your plane 100% reflective. The "melting together" is due to
the glow effects adding together, if the plane reflects a dimmer image
of the glow, you won't see the effect as much. This can't be "fixed",
because it isn't a problem.
Also, this may have something to do with the fact that the glow isn't
calculated between the plane and the camera, but only between the plane
and the glow. Because the total distance the ray has travelled isn't
used, the reflection of the glow is dimmer. I may strip out the depth
dependance from the equations, which will make things slightly less
realistic but more consistent.
--
Christopher James Huff
Personal: chr### [at] mac com, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tag povray org, http://tag.povray.org/
<><
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Andy Cocker wrote:
> Chris, I have rendered an animation (2 stills attatched here). You'll notice
> how, when glows become closer together, their light becomes brighter and
> melts into a strong (in this case white) glow? I really like the fact that
> this behaviour occurs. However, I have noticed that this behaviour is not
> seen in the reflection on the floor plane. I was wondering if this could be
> 'fixed'?
But the way it is now is more realistic.
--
David Fontaine <dav### [at] faricy net> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
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Christoph Hormann wrote:
>
> Bill DeWitt wrote:
> >
> > Yeah! I kinda like "glob" too...
>
> http://rt.cs.tu-berlin.de/cgi-bin/man2html.cgi/usr/man/man1/glob.1
>
> :-)
http://www.dictionary.com/cgi-bin/dict.pl?term=glob
;` }
--
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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