POV-Ray : Newsgroups : povray.newusers : Non-touching objects seem to be touching : Re: Non-touching objects seem to be touching Server Time
6 Jul 2022 17:32:54 EDT (-0400)
  Re: Non-touching objects seem to be touching  
From: clipka
Date: 10 Feb 2017 16:31:46
Message: <589e3142$1@news.povray.org>
Am 10.02.2017 um 19:00 schrieb Bald Eagle:
> Stephen <mca### [at] aolcom> wrote:
> 
>> No need to apologise you picked the right group to ask in. And every
>> time it's asked it is described in a different way. :-)
> 
> And some of us had no idea it even existed.
> 
> Christoph - what IS the distance used?  And what should be the separation
> distance?  Any value above that plus the minimum value that POV-Ray recognizes?

*Sigh!*
I had hoped nobody would ask...

The short answer is "just toy around with scene scale and distance until
you're happy".


The long answer is that there are /two/ minimum distance mechanisms,
/both/ of which may kick in independently:

- One mechanism uses a global constant, MIN_ISECT_DEPTH (defined as 1e-4
in POV-Ray 3.7), which is tested in global scene coordinate space.

- Another mechanism uses a constant depending on the type of primitive,
ranging from 1e-6 to 1e-2, which may be tested in global scene
coordinate space or some local coordinate space, also depending on the
type of primitive.


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