POV-Ray : Newsgroups : povray.text.tutorials : Temporary Gamma? Server Time
3 Nov 2024 08:59:05 EST (-0500)
  Temporary Gamma? (Message 1 to 7 of 7)  
From: Phil Clute
Subject: Temporary Gamma?
Date: 18 Jun 1999 04:40:29
Message: <376A066B.2996EB3@tiac.net>
I have a scene that I'm including someone else's object in.
Unfortuneatly 1 works best at assumed_gamma 4.0 the other 
works at assumed_gamma 2.2 . Is there a keyword I'm not
aware of that will fix this. I was hoping I could just switch
gamma when the .inc file is read and then switch back when the
original file continues.
Really the problem is my own scene file. The shadowed area shows
up too much unless I increase the gamma. I would just tone down
the colors but I'm using an image_map.

Any help would be appreciated.
Phil
-- 
...coffee?...yes please! extra sugar,extra cream...Thank you.


Post a reply to this message

From: Ken
Subject: Re: Temporary Gamma?
Date: 18 Jun 1999 04:49:46
Message: <376A0541.A5D3D740@pacbell.net>
Phil Clute wrote:
> 
> I have a scene that I'm including someone else's object in.
> Unfortuneatly 1 works best at assumed_gamma 4.0 the other
> works at assumed_gamma 2.2 . Is there a keyword I'm not
> aware of that will fix this. I was hoping I could just switch
> gamma when the .inc file is read and then switch back when the
> original file continues.
> Really the problem is my own scene file. The shadowed area shows
> up too much unless I increase the gamma. I would just tone down
> the colors but I'm using an image_map.
> 
> Any help would be appreciated.
> Phil
> --
> ...coffee?...yes please! extra sugar,extra cream...Thank you.

I am not sure this will work but you can try adding two global setting in
your scene files. For example:

global_settings { assumed_gamma 2.2 }

#include "otherfile.inc"

object { object_from_inc }

global_settings { assumed_gamma 4.0 }

Rest of scene...

-----

I seriously doubt this will work but you can try anyway.
Don't be lazy and simply adjust the colors :-]


-- 
Ken Tyler

mailto://tylereng@pacbell.net


Post a reply to this message

From: Phil Clute
Subject: Re: Temporary Gamma?
Date: 18 Jun 1999 13:30:27
Message: <376A82A2.CF0635A6@tiac.net>
>I seriously doubt this will work but you can try anyway.

Nope it doesn't, I tried.

>Don't be lazy and simply adjust the colors :-]

In this case, the offending colors are an image_map of the earth--
the same one in p.b.i. under 'Earth/Eyes', that image was done at
gamma 4.0 because lower settings showed the dark side of the planet
as not so dark. I'm not sure how I would go about toning down an 
image_map...or even if that's the way to go. I generally try to
stay in gamma 1.0 anyhow.

I go to great leangths to be lazy. ;-)

-- 
...coffee?...yes please! extra sugar,extra cream...Thank you.


Post a reply to this message

From: Phil Clute
Subject: Re: Temporary Gamma?
Date: 18 Jun 1999 14:26:45
Message: <376A8FD5.A7B8092@tiac.net>
Of course I could adjust the ambient level...duh!
I guess it was just too obvious...

-- 
...coffee?...yes please! extra sugar,extra cream...Thank you.


Post a reply to this message

From: Ken
Subject: Re: Temporary Gamma?
Date: 18 Jun 1999 14:29:14
Message: <376A8D14.3DB60FD2@pacbell.net>
Phil Clute wrote:
> 
> Of course I could adjust the ambient level...duh!
> I guess it was just too obvious...
> 
> --
> ...coffee?...yes please! extra sugar,extra cream...Thank you.

I thought of suggesting that but it seemed a little too obvious...

One sugar is fine thank you...

-- 
Ken Tyler

mailto://tylereng@pacbell.net


Post a reply to this message

From: Phil Clute
Subject: Re: Temporary Gamma?
Date: 19 Jun 1999 00:18:22
Message: <376B1A7E.4B4C1ADD@tiac.net>
>> Of course I could adjust the ambient level...duh!
>> I guess it was just too obvious...
>> 
>> --
>> ...coffee?...yes please! extra sugar,extra cream...Thank you.

Ken Wrote
>I thought of suggesting that but it seemed a little too obvious...

Yeah well, I'm just sort of stupid sometimes.

>One sugar is fine thank you...

I'm trying to cut back...trying.

-- 
...coffee?...yes please! extra sugar,extra cream...Thank you.


Post a reply to this message

From: John Bauman
Subject: Re: Temporary Gamma?
Date: 17 Jul 1999 17:03:34
Message: <3790efa6@news.povray.org>
If you felt like it you could always map it onto a box,ajust the gamma to
4.0,
render it after you got the lights and camera right, then just use the
rendered image.
Phil Clute wrote in message <376### [at] tiacnet>...
>Of course I could adjust the ambient level...duh!
>I guess it was just too obvious...
>
>--
>...coffee?...yes please! extra sugar,extra cream...Thank you.


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.