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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Sun, 16 Apr 2006 10:40:52 GMT
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Viewed:
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4120 times
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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?
--
Anders Isaksson, Sweden
BlockCAD: http://web.telia.com/~u16122508/proglego.htm
Gallery: http://web.telia.com/~u16122508/gallery/index.htm
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Message has 2 Replies:
 | | Re: Call for GUI part editor
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| (...) Yes, primitives are important. In my program, you can add them just like any other part. I already implemented moving and I wanted to add scaling and rotating, but I did not understand the rotation matrix command. Could anyone explain that to (...) (18 years ago, 16-Apr-06, to lugnet.cad)
| | | Re: Call for GUI part editor
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| (...) 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 (...) (18 years ago, 19-Apr-06, to lugnet.cad)
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Message is in Reply To:
| | Re: Call for GUI part editor
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| Hi Kevin, (...) You are completely right. Such a GUI editor is a program I was always looking for (and - unfortunately- I still am). But for two years I have been programming on a little editor to do things like that. My programming skills are not (...) (18 years ago, 16-Apr-06, to lugnet.cad)
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