[cad-linux] Re: .dxf or .dwg?
- From: "Lee Harding" <lee.harding@xxxxxxxxxxxx>
- To: <cad-linux@xxxxxxxxxxxxx>
- Date: Fri, 22 Aug 2003 08:36:07 -0700
I'd like to think I'm primarily a mechanical engineer, too (BSME OSU,
MSME PSU). But after 9 years at a CAD company I think I'm (sadly) more
software than hardware.=20
The reason for using a database, in my option, is to simplify your job.
DXF isn't a very pleasant format to learn from scratch (as others on
this list will attest). To use Postgres you need only read a chapter or
two in a well-written book (there are many), and then download some free
software and start dinking around.
Once you have the geometry (and later the g-code) in the database, you
can:
-- back it up
-- share it via web applications
-- version it
-- search it
-- integrate it with whatever business systems you have
Postgres does more than just store the geometry. It has operators to
find geometries based on location ("what's near here?"), do intersection
calculations, and some experimental extensions are starting to pop-up
around topology that would make finding "loops" of curves easier.
I'd really recommend reading a book on it, or at least checking out the
online documentation.
-----Original Message-----
From: Sagar Behere [mailto:sagar_behere@xxxxxxxxx]=20
Sent: Friday, August 22, 2003 5:22 AM
To: cad-linux@xxxxxxxxxxxxx
Subject: [cad-linux] Re: .dxf or .dwg?
Hello again,
This is going to sound really awkward. I am primarily
a mechanical engineer, who got pissed off because I
couldn't find a good gpl'ed cam software. I am not a
programming guru, so bear with me if this sounds
stupid. (I got a bunch of computer science students
who are going to do that actual programming)
Where exactly and how is a database required in a CAM
software? Could somebody give a very quick rundown of
teh steps required to create a cam software? Something
like
1) Read in a .dxf file
2) identify arcs, curves blah
3) convert them to g-codes
4) do something else to modify those g-codes to obtain
a proper tool path
well...something like that anyways..
I saw the source code of a program from Yeager
automation, called Ace, which accepts a .dxf as input
and generates g-codes. I am fairly certain that it did
not incorporate a database, hence my doubt.
I'd really love to interact more with you guys as the
software starts taking shape.
Thanks and regards,
Sagar
--- Lee Harding <lee.harding@xxxxxxxxxxxx> wrote:
> Another option is using PostgreSQL's built-in
> geometry types. =20
__________________________________
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
http://sitebuilder.yahoo.com
Other related posts:
