POV-Ray : Newsgroups : povray.unofficial.patches : Re: Ray teleportation and multiple spaces : Re: Ray teleportation and multiple spaces Server Time
14 May 2024 22:59:38 EDT (-0400)
  Re: Ray teleportation and multiple spaces  
From: Christoph Hormann
Date: 6 Oct 2005 04:25:02
Message: <di2moi$37r$1@chho.imagico.de>
Daniel Dawson wrote:
> 
> Well, I looked through the MegaPOV docs before and I didn't see that. But I
> can tell you pretty quickly that it is precisely *not* when I'm after. I
> already thought about such a feature and ruled it out: it merely projects
> an image onto a surface as a flat image map.

Which is exactly what any POV-Ray render does.  In fact you can use the 
camera_view pigment to render a scene by placing it in front of the main 
camera and no one would notice the difference.

> I want surfaces that pass
> light through the way reflection and refraction do, except that instead of
> sending out a new ray from the same point on the surface, it sends out a
> new ray from a corresponding point on a *different* surface (where
> 'corresponding' is defined by some mapping).

I see your point but this is not as simple as it sounds.  Raytracing 
more or less relies on the rules of euclidian geometry (see 
http://en.wikipedia.org/wiki/Euclidian), esp. for shadows and by 
breaking this you won't get consistent result any more.

Everything that does not cause such trouble can already be done with 
camera_view.

> Anyway, if there's going to be some actual development on this, would you
> agree that povray.programming is a better place to discuss it?

Absolutely not.  povray.programming is for discussing aspects of the 
POV-Ray source code and right now this does not have to do anything with 
this.

Christoph

-- 
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http://www.tu-bs.de/~y0013390/ (Last updated 24 Jul. 2005)
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