POV-Ray: Newsgroups: povray.general: Question about camera normals

POV-Ray : Newsgroups : povray.general : Question about camera normals		Server Time 17 Mar 2025 01:05:45 EDT (-0400)

From: Tor Olav Kristensen
Subject: Question about camera normals
Date: 20 Jan 2003 08:07:38
Message: <Xns9309904076C1Ctorolavk@204.213.191.226>

What, exactly, will happen to the
camera vectors; direction, right and up
if one specifies both direction and
angle in a camera statement for a
perspective camera ?

I have read the camera section (6.4) in
the documentation, but I am not able to
find an answer there to this question.

(I think I understand what happens if
either an angle or a direction vector
is given, but I do not understand what
happens if both are given.)


Tor Olav

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From: Tor Olav Kristensen
Subject: Re: Question about camera vectors
Date: 20 Jan 2003 08:28:23
Message: <Xns930993C4D159torolavk@204.213.191.226>

Sorry, I don't know why I wrote camera
normals in the subject line, instead of
camera vectors.

Tor Olav


Tor Olav Kristensen <tor### [at] hotmailcom> wrote in 
news:Xns### [at] 204213191226:

> What, exactly, will happen to the
> camera vectors; direction, right and up
> if one specifies both direction and
> angle in a camera statement for a
> perspective camera ?
> 
> I have read the camera section (6.4) in
> the documentation, but I am not able to
> find an answer there to this question.
> 
> (I think I understand what happens if
> either an angle or a direction vector
> is given, but I do not understand what
> happens if both are given.)
> 
> 
> Tor Olav

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From: Thorsten Froehlich
Subject: Re: Question about camera normals
Date: 20 Jan 2003 08:31:24
Message: <3e2bfa2c@news.povray.org>

In article <Xns### [at] 204213191226> , Tor Olav Kristensen
<tor### [at] hotmailcom>  wrote:

> What, exactly, will happen to the
> camera vectors; direction, right and up
> if one specifies both direction and
> angle in a camera statement for a
> perspective camera ?
>
> I have read the camera section (6.4) in
> the documentation, but I am not able to
> find an answer there to this question.
>
> (I think I understand what happens if
> either an angle or a direction vector
> is given, but I do not understand what
> happens if both are given.)

The direction vector direction is used while the angle determines its
length.

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org

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From: Tor Olav Kristensen
Subject: Re: Question about camera normals
Date: 20 Jan 2003 18:20:19
Message: <Xns930A3FCDD76Ctorolavk@204.213.191.226>

"Thorsten Froehlich" <tho### [at] trfde> wrote in
news:3e2bfa2c@news.povray.org: 

> In article <Xns### [at] 204213191226> , Tor Olav
> Kristensen <tor### [at] hotmailcom>  wrote:
> 
>> What, exactly, will happen to the
>> camera vectors; direction, right and up
>> if one specifies both direction and
>> angle in a camera statement for a
>> perspective camera ?
...

> The direction vector direction is used while the angle determines
> its length.


Thank you Thorsten.


Tor Olav

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