POV-Ray : Newsgroups : povray.binaries.images : Dropsnow Macro Examples (48kb, 52kb & 14kb) : Re: Dropsnow Macro Examples (52kb) Server Time
10 Aug 2024 01:26:13 EDT (-0400)
  Re: Dropsnow Macro Examples (52kb)  
From: Christoph Hormann
Date: 15 Dec 2004 13:20:02
Message: <cppv0k$lls$1@chho.imagico.de>
Tim Nikias wrote:
> 
> Haven't followed the progress of this project, eh? ;-)

No, not really.

> First, a macro generates a camera which creates an orthographic view onto
> the object with the direction intended to be used for the surface sampling.
> This view is plain black/white where the object is white.
> Then, I do a pretest. Given the orthographic view, I divide the area into
> cells and check each if they have cross from white to black at their edges.
> If that fails, [...]

That will have problems with geometric features that are smaller than 
the cells i assume.  Still a clever idea of course - it will improve 
performance for thing like trees but if the orthographic view is nearly 
totally white a conventional sampling of the whole area would be more 
efficient.

> 
> I've always thought that POV-Ray relies heavily on the CPU, it's *the*
> driving force. 

That's the case for *rendering* but not for *parsing*.

Christoph

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