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- From: baby@info.polymtl.ca (Philippe Grant)
- Newsgroups: comp.graphics
- Subject: Re: Wanting format of AutoCAD .dwg files...
- Message-ID: <BABY.92Aug14091612@turing.info.polymtl.ca>
- Date: 14 Aug 92 14:16:12 GMT
- References: <1992Aug12.133743.289@csc.canterbury.ac.nz>
- Sender: news@vlsi.polymtl.ca (USENET News System)
- Organization: Ecole Polytechnique de Montreal, Canada
- Lines: 34
- In-Reply-To: geoffrey@cosc.canterbury.ac.nz's message of 12 Aug 92 13:37:42 +1200
-
- In article <1992Aug12.133743.289@csc.canterbury.ac.nz> geoffrey@cosc.canterbury.ac.nz (Geoff Thomas) writes:
-
-
- > I've got an AutoCAD .dwg file from somewhere, and I want to write a bit
- > of C code to read it in and splat it on the screen, but the .dwg file is
- > is some kind of binary format, and not very readable.
- >
- > Any help much appreciated.
- > Thanks,
- >
- > Geoff Thomas
-
- Well, I have some bad news for you. (you may want to second-source this
- though).
-
- In the little experience I've had working for a small tech drawing firm
- (wich used ACAD heavily), I've been told that the ACAD .dwg format is
- proprietary and ``secret''(1) (though someone somewhere might have hacked it).
-
- However, the .dxf format is not. Its format is even described in the ACAD
- reference manuals. The drawback is that it is a text format, so it must be
- parsed (which means that it's S-L-O-W). It also tends to gobble up space
- for large drawings. (.dxf format was put into ACAD to exchange drawings
- between different drawing/drafting/jotting software).
-
-
-
-
-
- (1) to be taken with a grain of salt
- --
- Philippe Grant | If it ain't broke,
- Ecole Polytechnique de Montreal | DON'T FIX IT!!!
- baby@info.polymtl.ca | Including this signature!
-