POV-Ray : Newsgroups : povray.beta-test : a declared camera bug (transformations) Server Time
1 Nov 2024 11:16:20 EDT (-0400)
  a declared camera bug (transformations) (Message 1 to 3 of 3)  
From: Mark Weyer
Subject: a declared camera bug (transformations)
Date: 14 May 2002 05:06:20
Message: <3ce0d38c@news.povray.org>
The following occured with
Persistence of Vision(tm) Ray Tracer Version 3.5.beta.RC4 Unix
(.Linux.gcc)
on a Linux machine (64 MB, 300 MHz)

When I #declare a camera and use it later,
transformations are applied twice. The following is a minimal scene:

   light_source {
     <-1,2,-1>*100
     color rgb <1,1,1>
   }

   box {
     <-2,-3,-5> <2,3,5>
     texture {pigment {rgb <1,1,1>}}
   }

   #declare cam=camera {
     location -20*z
     look_at <0,0,0>
     right x
     up y

     rotate 30*x
   }

   camera {cam}

It seems to be equivalent to

   [...]

   camera {
     location -20*z
     look_at <0,0,0>
     right x
     up y

     rotate 30*x
     rotate 30*x
   }

instead of

   [...]

   camera {
     location -20*z
     look_at <0,0,0>
     right x
     up y

     rotate 30*x
   }

(As the manual tells me to use the news group while the man page
tells me to mail, I will try both.)


  Mark Weyer


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From: Felix Wiemann
Subject: Re: a declared camera bug (transformations)
Date: 14 May 2002 10:33:45
Message: <3ce12049@news.povray.org>
Mark Weyer wrote:
> When I #declare a camera and use it later,
> transformations are applied twice. The following is a minimal scene:

Confirmed.
RC4, SuSE Linux 7.3
-- 
Felix Wiemann


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From: Thorsten Froehlich
Subject: Re: a declared camera bug (transformations)
Date: 14 May 2002 13:35:56
Message: <3ce14afc@news.povray.org>
In article <3ce0d38c@news.povray.org> , Mark Weyer 
<wey### [at] fregemathematikuni-freiburgde>  wrote:

> When I #declare a camera and use it later,
> transformations are applied twice. The following is a minimal scene:

Will be fixed in next beta.

    Thorsten

____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org


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