Subject:
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Re: Call for GUI part editor
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Newsgroups:
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lugnet.cad
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Date:
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Wed, 19 Apr 2006 22:00:58 GMT
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Viewed:
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4159 times
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In lugnet.cad, Anders Isaksson wrote:
> Sven Moritz Hein wrote:
> > for two years I have been programming on a little editor to do
> > things like that.
> > [...}
> > A sample screnshot can be found here:
> > http://www.brickshelf.com/gallery/smhltec/cad/mainscreenshot.png
>
> The idea (and the program!) looks interesting, but I have one main question:
>
> Where do the primitives enter in this picture? It looks like both Kevin's
> ideas and your program are ignoring the primitives, working down on the bare
> polygons.
>
> Primitives are an essential part of part creation, aren't they? (Correct me
> if I'm wrong)
>
> To be really useful, such a tool would have to know about primitives, the
> fact that the points of a primitive may not be moved relative to each other
> (scale, translate, rotate the full primitive is all we are allowed to do).
> The possibility to snap own lines and polygons to the points of a primitive
> would of course be necessary (or vice versa, fit a primitive to one or more
> own points?).
>
> As for Kevin's ideas about intersection calculations, it is rather
> difficult, as the only existing objects in the LDRAW world are the quad,
> triangle and line. A .DAT file does not contain any information about more
> abstract objects.
>
> I belive the best route to a part modeller is to find an existing 3D
> modeller that has the abstraction level, and functionality, that's needed,
> and concentrate on making an export filter for that to produce .DAT files.
> Are there no community projects working in that direction?
Hi Anders,
Sorry for the tardy reply. I failed to mention primitives, because they are
easy to work with compared to the manual nature of quads, tris and lines. That
post was too huge to start with, so it is a good thing I didn't mention them
;^)
My assumption was that the primitives would be used, but physically
unchangable, yet all the individual quads, tris and lines would be individually
clickable.
I wish I had time to work on something like this.
Kevin
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Message is in Reply To:
 | | Re: Call for GUI part editor
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| (...) Where do the primitives enter in this picture? It looks like both Kevin's ideas and your program are ignoring the primitives, working down on the bare polygons. Primitives are an essential part of part creation, aren't they? (Correct me if I'm (...) (18 years ago, 16-Apr-06, to lugnet.cad)
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