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31 Oct 2024 21:25:37 EDT (-0400)
  how to make an object transparent? (Message 1 to 5 of 5)  
From: D  H  Berlin
Subject: how to make an object transparent?
Date: 15 Apr 2005 04:50:00
Message: <web.425f7f274f3691ec2d341c80@news.povray.org>
Hi!
I have written an object consisting of some sphere, planes and difference
and intersection, all with their own textures and/or pigments.

when using the object what could i add to make it appearing transparent?
(50% transparent for example)

pigment with rgbf or rgbt doesn't work here.

Additional: Is there a special command to show movement?

Greetings
Dieter


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From: Slime
Subject: Re: how to make an object transparent?
Date: 15 Apr 2005 07:46:11
Message: <425fa983@news.povray.org>
> pigment with rgbf or rgbt doesn't work here.

That's (almost) the best you can do. You might find that using merge{}
instead of union{} to hold the object together will make it look better (no
internal surfaces will be visible), and you can use an internal_texture to
make it so you only see the object on the way in and not the way out (so you
don't see the backside), but if there are two surfaces in front of each
other then you'll still be able to see them both. However...

> Additional: Is there a special command to show movement?

Mega-POV has a motion_blur feature that can be used for this. In addition,
motion blur can be used to make an entire object 50% transparent. Set the
object to do its motion for the first 50% of the clock time, and for the
rest, use an #if to scale the object really small and put it somewhere
off-screen. Then it will only be 50% visible, and as streaked as you want
it.

 - Slime
 [ http://www.slimeland.com/ ]


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From: Alain
Subject: Re: how to make an object transparent?
Date: 15 Apr 2005 16:09:00
Message: <42601f5c$1@news.povray.org>
D. H. Berlin nous apporta ses lumieres en ce 2005-04-15 04:45:
> Hi!
> I have written an object consisting of some sphere, planes and difference
> and intersection, all with their own textures and/or pigments.
> 
> when using the object what could i add to make it appearing transparent?
> (50% transparent for example)
> 
> pigment with rgbf or rgbt doesn't work here.
> 
> Additional: Is there a special command to show movement?
> 
> Greetings
> Dieter
> 
> 
You may need to add the filter or transmit components to each object individualy. I
don't think that 
adding a texture{transmit 0.5} to the whole union will work in your case, but you may
try.

Alain


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From: Etienne Renguet
Subject: Re: how to make an object transparent?
Date: 16 Apr 2005 05:10:01
Message: <web.4260d5f58cdced01adccfadd0@news.povray.org>
You may also need to define or increase the max_trace_level in
global_settings (see documentation 2.4.2.1 on why this may be needed, and
3.3.3 for syntax)
Etienne


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From: D  H  Berlin
Subject: Re: how to make an object transparent?
Date: 18 Apr 2005 23:20:01
Message: <web.426478328cdced01c505bd620@news.povray.org>
"Etienne Renguet" <nomail@nomail> wrote:
> You may also need to define or increase the max_trace_level in
> global_settings (see documentation 2.4.2.1 on why this may be needed, and
> 3.3.3 for syntax)
> Etienne

I haven't done this up to now, but i'm sure i have to do it. Because using
transmit/filter on all seperate parts of the intersecion/differnece
resulted in simply black.

Or i have to use merge somehow on the objec, what i haven'T done so far,
because it wouldn't be optimal for scene logical reason.

Thanks all for the help.

Greetings DH


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