POV-Ray : Newsgroups : povray.binaries.images : NURBS : Re: NURBS Server Time
3 May 2024 03:41:09 EDT (-0400)
  Re: NURBS  
From: Le Forgeron
Date: 24 Jul 2016 03:08:21
Message: <57946965$1@news.povray.org>
Le 24/07/2016 08:17, clipka a écrit :
> Am 24.07.2016 um 07:55 schrieb Le_Forgeron:
>> Le 24/07/2016 04:13, clipka a écrit :
>>> What's been bothering me about POV-Ray's Bezier patches is that we don't
>>> have some kind of bezier mesh to support non-union CSG. Do you think you
>>> can throw together a nurbs mesh primitive?
>>
>> what do you want ? or what is the need ?
>>
>> It's a 2D finite surface, involving it in CSG does not seem to make sense (to me).
>> (it is rarely closed, until you glue many nurbs together)
> 
> ... and that's exactly what I'd love to see. Just like you glue many
> triangles together in a mesh.
> 

So, do you want a "container" for multiple nurbs with additional "inside" property so
it can be used in further CSG operation ?
(assuming such container would assert that the collection of nurbs defines one or more
closed surfaces with non-zero enclosed volume(s))

Using the same approach as for mesh (inside_vector), it might be possible.
I just anticipate a high cpu cost.

On the same line, while we are at it, such container could also handle bicubic_patch
the same way.

Any suggestion of name for that container ?

Still any interest for nurbs.get_vertex() ? or can I forget it ?


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