POV-Ray : Newsgroups : povray.binaries.animations : cloudy sky animation [320kb] Server Time
20 Jul 2024 13:14:20 EDT (-0400)
  cloudy sky animation [320kb] (Message 1 to 3 of 3)  
From: Mike
Subject: cloudy sky animation [320kb]
Date: 10 Aug 2000 17:51:04
Message: <399322B1.25BCE909@aol.com>
Just goofing around trying to make a decent glow for the sun.  The glow
fades as the light is obscured by the clouds - courtesy of a little hack
to do_phong (doesn't check that the light is in front of the object
anymore, hee hee).


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Attachments:
Download 'sky.mpg' (302 KB)

From: Christoph Hormann
Subject: Re: cloudy sky animation [320kb]
Date: 10 Aug 2000 18:11:23
Message: <399328A9.CD76903C@schunter.etc.tu-bs.de>
Mike wrote:
> 
> Just goofing around trying to make a decent glow for the sun.  The glow
> fades as the light is obscured by the clouds - courtesy of a little hack
> to do_phong (doesn't check that the light is in front of the object
> anymore, hee hee).
> 

Looks good, but the sun needs to shine more trough the clouds at the edges,
right now, the glow immediately stops, when the sun comes near a cloud's edge.  

Furthermore, the clouds themselves should glow at the edges near the sun, that
could be obtained by using a pigment that is not translated with the clouds.  

Christoph

--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/


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From: Bob Hughes
Subject: Re: cloudy sky animation [320kb]
Date: 10 Aug 2000 23:11:59
Message: <39936eff@news.povray.org>
"Christoph Hormann" <Chr### [at] schunteretctu-bsde> wrote in
message news:399328A9.CD76903C@schunter.etc.tu-bs.de...
|
| Mike wrote:
| >
| > Just goofing around trying to make a decent glow for the sun.  The glow
| > fades as the light is obscured by the clouds - courtesy of a little hack
| > to do_phong (doesn't check that the light is in front of the object
| > anymore, hee hee).
|
| Looks good, but the sun needs to shine more trough the clouds at the
edges,
| right now, the glow immediately stops, when the sun comes near a cloud's
edge.
|
| Furthermore, the clouds themselves should glow at the edges near the sun,
that
| could be obtained by using a pigment that is not translated with the
clouds.

That is neat.  Now I see what you were talking about at the chat room.
Media might do a good job of having a glowing edge to the clouds, but then
there goes the use of a phong highlighting on the shadow side.
This sort of opposite-side-of-lightsource highlighting could be a great
feature.  Many times I've wanted to show a normal on the shadow side of a
semi-transparent object.

Bob


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