POV-Ray : Newsgroups : povray.binaries.images : Problem with Filter/Translucency and Emitting Media [ JPEG 62 KB, 800 x 800] Server Time
17 Nov 2024 22:19:00 EST (-0500)
  Problem with Filter/Translucency and Emitting Media [ JPEG 62 KB, 800 x 800] (Message 1 to 7 of 7)  
From: Yadgar
Subject: Problem with Filter/Translucency and Emitting Media [ JPEG 62 KB, 800 x 800]
Date: 21 Aug 2004 16:19:47
Message: <4127ae63@news.povray.org>
High!

While I meanwhile solved my last problem mentioned in p.b.s-f., a new
one emerged: the Sun's media glow is not visible through the transparent
parts of Saturn's ring (near the right edge of the image). Is this
inevitable - or are there possibilities to straighten this out?

The whole scene is meant as cover artwork for a PoV-Ray data CD
containing textures and heightfields for the planets and moons of the
Solar System...

See you in Khyberspace -
http://home.arcor.de/yadgar/khyberspace/index-e.html
Afghanistan Chronicle: http://home.arcor.de/yadgar/

Yadgar

Now playing: Dancing Queen (ABBA)


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From: Zeger Knaepen
Subject: Re: Problem with Filter/Translucency and Emitting Media [ JPEG 62 KB, 800 x 800]
Date: 21 Aug 2004 17:35:09
Message: <4127c00d@news.povray.org>
"Yadgar" <yaz### [at] gmxde> schreef in bericht
news:4127ae63@news.povray.org...
> High!
>
> While I meanwhile solved my last problem mentioned in p.b.s-f., a new
> one emerged: the Sun's media glow is not visible through the transparent
> parts of Saturn's ring (near the right edge of the image). Is this
> inevitable - or are there possibilities to straighten this out?

try adding the hollow modifier to the object representing Saturn's rings.

cu!
-- 
ZK AKA SaD
http://www.povplace.be.tf
"Luckyly they included a button, right here, that'll blow the entire thing
up!"


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From: Nathan Kopp
Subject: Re: Problem with Filter/Translucency and Emitting Media [ JPEG 62 KB, 800 x 800]
Date: 21 Aug 2004 18:20:18
Message: <4127caa2$1@news.povray.org>
"Zeger Knaepen" <zeg### [at] studentkuleuvenacbe> wrote...
> "Yadgar" <yaz### [at] gmxde> schreef in bericht
> news:4127ae63@news.povray.org...
> > High!
> >
> > While I meanwhile solved my last problem mentioned in p.b.s-f., a new
> > one emerged: the Sun's media glow is not visible through the transparent
> > parts of Saturn's ring (near the right edge of the image). Is this
> > inevitable - or are there possibilities to straighten this out?
>
> try adding the hollow modifier to the object representing Saturn's rings.
>

Or increase the max trace level.

-Nathan


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From: Oleguer Vilella
Subject: Re: Problem with Filter/Translucency and Emitting Media [ JPEG 62 KB, 800 x 800]
Date: 22 Aug 2004 15:15:19
Message: <4128f0c7@news.povray.org>
That's very good. I like a lot this image. Congratulations.


news:4127caa2$1@news.povray.org...
>
> "Zeger Knaepen" <zeg### [at] studentkuleuvenacbe> wrote...
> > "Yadgar" <yaz### [at] gmxde> schreef in bericht
> > news:4127ae63@news.povray.org...
> > > High!
> > >
> > > While I meanwhile solved my last problem mentioned in p.b.s-f., a new
> > > one emerged: the Sun's media glow is not visible through the
transparent
> > > parts of Saturn's ring (near the right edge of the image). Is this
> > > inevitable - or are there possibilities to straighten this out?
> >
> > try adding the hollow modifier to the object representing Saturn's
rings.
> >
>
> Or increase the max trace level.
>
> -Nathan
>
>


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From: Yadgar
Subject: Re: Problem with Filter/Translucency and Emitting Media [ JPEG 62 KB, 800 x 800]
Date: 22 Aug 2004 16:39:39
Message: <4129048b@news.povray.org>
High!

Nathan Kopp wrote:

> "Zeger Knaepen" <zeg### [at] studentkuleuvenacbe> wrote...
>>try adding the hollow modifier to the object representing Saturn's rings.
>>
> Or increase the max trace level.

Neither "hollow" nor increasing the max_trace_level worked, the latter 
not even at 256 and with adc_bailout set to 0! Now I tried replacing the 
original disc object by a very thin cylinder - and the rings disappeared 
completely!

Very strange...

See you in Khyberspace -
http://home.arcor.de/yadgar/khyberspace/index-e.html
Afghanistan Chronicle: http://home.arcor.de/yadgar/
Home-made electronic music: http://home.arcor.de/yadgar/music/

Yadgar


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From: Alain
Subject: Re: Problem with Filter/Translucency and Emitting Media [ JPEG 62KB, 800 x 800]
Date: 22 Aug 2004 22:26:46
Message: <412955e6$1@news.povray.org>
Yadgar nous apporta ses lumieres ainsi en ce 22/08/2004 16:39... :

> High!
>
> Nathan Kopp wrote:
>
>> "Zeger Knaepen" <zeg### [at] studentkuleuvenacbe> wrote...
>>
>>> try adding the hollow modifier to the object representing Saturn's 
>>> rings.
>>>
>> Or increase the max trace level.
>
>
> Neither "hollow" nor increasing the max_trace_level worked, the latter 
> not even at 256 and with adc_bailout set to 0! Now I tried replacing 
> the original disc object by a very thin cylinder - and the rings 
> disappeared completely!
>
> Very strange...
>
> See you in Khyberspace -
> http://home.arcor.de/yadgar/khyberspace/index-e.html
> Afghanistan Chronicle: http://home.arcor.de/yadgar/
> Home-made electronic music: http://home.arcor.de/yadgar/music/
>
> Yadgar

How thin compared to the other dimentions? If the thickness is very low 
(0.000 000 1 or less) and the larger other values around 1000 or more, 
the rounding may play trick on you. A realistic thickness could be 
around 1/10 000 Saturn's radius.

Alain


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From: Yadgar
Subject: Re: Problem with Filter/Translucency and Emitting Media [ JPEG 62KB,800 x 800]
Date: 27 Aug 2004 08:10:19
Message: <412f24ab@news.povray.org>
High!

> How thin compared to the other dimentions? If the thickness is very low 
> (0.000 000 1 or less) and the larger other values around 1000 or more, 
> the rounding may play trick on you. A realistic thickness could be 
> around 1/10 000 Saturn's radius.
> 
> Alain

The radius of my rings cylinder is about 137000 (1 unit = 1 km), its
thickness is 20, so I wonder why this occurred... recently, I went
troubleshooting and found out that it seems to have something to do with
the texture - but I didn't modify it in any way since the rendering with
the disc object!

See you in Khyberspace -
http://home.arcor.de/yadgar/khyberspace/index-e.html
Afghanistan Chronicle: http://home.arcor.de/yadgar/

Yadgar

Now playing: Looking Around (Yes)


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