Re: gEDA-user: )(

[Bert Timmerman <bert.timmerman@xxxxxxxxx>]

Hi Peter and all,

On Fri, 2009-10-02 at 20:06 +0100, Peter Clifton wrote:
> On Fri, 2009-10-02 at 16:38 +0000, Kai-Martin Knaak wrote:
> > On Fri, 02 Oct 2009 09:50:37 +0100, Peter Clifton wrote:
> > 
> > > IMO, this is _not_ cheating, it is a standard technique. The surface of
> > > a board is flat - so you render it as one quad, and texture map the
> > > surface.
> > 
> > > Any real structure you wanted to represent (board edges, vias etc..)
> > > would need more complex geometry.
> > 
> > Well, if I think of a 3D representation of a design, the pcb is just one 
> > part of it. Components and the enclosing need to be added to make it a 
> > useful tool, rather than just a fancy picture. It would allow checking 
> > for mechanical constraints prior to manufacture. 
> > 
> > Kicad seems to be (almost?) there:
> > 	http://de.wikipedia.org/wiki/Datei:Kicad_3dviewer.jpg
> 
> Actually, looking at the Kicad code briefly made me realise that it
> isn't "that" hard to do 3D view. Basically they are just parsing VRML
> models (possibly just a subset of the syntax emitted by wings3D), and
> emitting GL drawing calls.
> 
> The bits I haven't got:
> 
> 1. VRML parser
> 2. Any models!
> 3. 3D Matrix setup for the GL stuff.
> 
> 
> > But again, I am not advocating to go along this route. Export of 3D data 
> > in some format that blender and decent mechanical CAD applications can 
> > import, would be a better way.
> 
> I'm not sure, but I heard VRML was actually a common interchange format.
> 
> 

AFAIK, VRML is a common file format and is human readable, that is the
positive side :)  VRML describes the faces of a primitive and not the
primitive itself.  Therefor one would need a high level modeler to
maintain models of 3D electronic parts and such.  With maintenance comes
the need for a feature called parametrization, another hurdle on top of
what could be achieved.

I believe that we could use Blender (or any other modeler with a
scripting language/extension) as a viewer of scripts generated by a pcb
hid exporter.

I have no experience with scripting or language extensions, I think I
read somewhere that it's Python for Blender.

Maybe this one is for a Python Guru :)

I'm willing to give things a try on modeling electronics 3D-parts.

Kind regards,

Bert Timmerman.
> 
> 
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