Subject:
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Re: DAT format question
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 22 Sep 1999 02:26:07 GMT
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Viewed:
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559 times
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"Gary Williams" <graywolf@pcpros.net> writes:
> For example, it shouldn't allow the user to add primitives directly
> to a model,
Why not? I've done this when a part didn't exist (I used a box.dat for
the center of the 1x2x2 shock absorber)
> Also, the color selector would only display codes 16 and 24 when
> editing a part or primitive,
Part developers often use different colors to make sure shapes are
matching up correctly. Also, atterned parts and some other parts
(electric parts) require specific colors other than 16 and 24.
> but allow any color for a part reference in a model or subassembly (or,
at >least, something along those lines).
Make sure you allow parts of models to be color 16. That helps in
playing with color schemes.
> In other words, the user's ability to manipulate an object should be
> restricted to only those actions that are in context for that object.
I would try to limit the amount of restrictions as much as possible.
> However, it seems that any type of file can be stored in any of the
> usual suite of directories, and the program is supposed to allow this
> to be compatible with the other CAD packages. This means that the • parser
> will have to be able to somehow analyze the contents of a file to • determine
> what kind of object it contains.
Is this really necessary? After all, the format of all the types of
files is the same. (parts reference primitives as if they were parts,
models use submodels as if they were parts)
> The only other alternative I can think of would to have sub-menus on
> the File/Open and File/New menus, one for each file type. Then it would
> be up to the user to tell the program what type of file he was about to
> work with.
I think this would be best. Let the user choose which interface
(primitive, part, model) (s)he wants to use.
--Bram
Bram Lambrecht / o o \ BramL@juno.com
-------------------oooo-----(_)-----oooo-------------------
WWW: http://www.chuh.org/Students/Bram-Lambrecht/
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Message has 1 Reply:
 | | Re: DAT format question
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| Bram Lambrecht wrote in message <19990921.200045.509...no.com>... (...) My experience has been that as flexibility increases, complexity increases. I'm usually quite anal about coding objects to always behave in a very structured, predictable (...) (25 years ago, 22-Sep-99, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: DAT format question
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| My original plans called for my CAD package to distinguish among the various kinds of DAT file. This would allow the program to know when it was appropriate to enable certain editing features. For example, it shouldn't allow the user to add (...) (25 years ago, 21-Sep-99, to lugnet.cad.dev)
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