Subject:
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Re: A comprehensive LDraw object model
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sun, 10 Feb 2002 00:26:49 GMT
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Viewed:
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443 times
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Sproaticus wrote:
> Hey folks,
>
> I think we need to figure out a comprehensive LDraw object model. Something
> that can be presented simply, and easily ported to various modern
> programming languages. A comprehensive class diagram would be a great
> start, and some code to illustrate behavior, too. To include datfile line
> types, a basic datfile collection type, minimum essential matrix and vector
> math, rudimentary (generic?) bitmap generation from DAT content, etc.
> (Maybe not too much, let's keep it lean and mean.) At the least, I
> think we should make the object model workable in C++, Java, Perl and
> Python.
>
This is interesting. I wonder what we can do as far as making it both
comprehensive and generic enough to be easily used by all those
languages. (I haven't fully read your second message but I"ll probably
have more comments there.)
> I have a modest start on an object model for Java in the works for my own
> use, but I think that if we all pool our efforts, we can enable a wide array
> of LDraw tools to be made quickly and easily. Over the past week, I
> implemented a datline class hierarchy and various matrix and vector math
> classes. After that was about 90% finished, here's what I was able to write
> in LESS THAN HALF A DAY (check out the window titled "xjjld - Jeremy's Java
> LDraw", lower left corner):
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=115962
That looks pretty cool. I'd like to see it when it's done.
>
> (Note: there is absolutely NO Java3D in that program. And it's even
> kinda fast. So far... for smallish models... with no filled
> polygons... ;-)
>
I understand your dislike for J3d, and we don't need to go through that
again, but It owuld be nice to take advantage of things that are
available on the different langauge platforms. For example, even though
it's shipped with J3D, the Vector math library (javax.vecmath) is really
a separate classlibrary, and I think would be a good choice when using
Java as the language. Better than going and writing a whole 'nother
Matrix library anyway.
There really isn't any reason to reinvent the wheel is there?
Also in your evaluation J3D etc... Did you happen to try GL4Java?
-Kyle
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Message has 1 Reply:
 | | Re: A comprehensive LDraw object model
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| (...) I'll have a better answer for this when I port my Java implementation to Perl. But yah, I guess "comprehensive" and "generic" don't quite mix well. I want comprehensive, in that this library could be used for many different methods of (...) (22 years ago, 10-Feb-02, to lugnet.cad.dev)
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Message is in Reply To:
| | A comprehensive LDraw object model
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| Hey folks, I think we need to figure out a comprehensive LDraw object model. Something that can be presented simply, and easily ported to various modern programming languages. A comprehensive class diagram would be a great start, and some code to (...) (22 years ago, 9-Feb-02, to lugnet.cad.dev)
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