POV-Ray : Newsgroups : povray.advanced-users : Projecting an image outward from the camera : Re: Projecting an image outward from the camera Server Time
8 Jul 2024 20:03:49 EDT (-0400)
  Re: Projecting an image outward from the camera  
From: Alain
Date: 5 Jul 2007 09:24:09
Message: <468cf0f9$1@news.povray.org>
Tim Attwood nous apporta ses lumieres en ce 2007/07/05 04:28:
> My first thought would be to use an orthographic
> camera for the pigment generation, then use a
> planar mapped pigment, the rear of the object
> would be textured wrong, but from the front it
> should look correct.
> 
> This is a real stumper... what you'd really want is
> some sort of inverted spherical camera, where the
> rays are shot from a sphere surrounding the look_at.
> 
> You might be able to get a reasonable map for some
> sorts of simple objects by making them hollow and
> rendering with a spherical camera placed inside at the
> center. 
> 
> 
You don't need to add the hollow keyword. The purpose of hollow is to allow an 
object to contain a media, nothing else. hollow will only remove a warning in 
this case.

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you have ever "Hand-Coded" a 
bezier patch.
Stephan Ahonen


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