[GRASS5] free software dxf support

[Bernhard Reiter]

I want to split the subjects:

This mail is only about evaluating technical possibilities
to exchange data with DXF DWG files with Free Software.
My other mail will be about the why to do this debate.


On Fri, May 16, 2003 at 10:29:13AM +0200, Radim Blazek wrote:
> On Thursday 15 May 2003 04:23 pm, Bernhard Reiter wrote:
> > > > DIME or dxflib might be a starting point for development.
> > >
> > > OpenDWG was not choosen by chance.
> > > DIME: C++ (not welcome in GRASS)
> > >       DXF only (no DWG)
> > >       versions 10-14 guaranteed only (missing 2000 and 2002)
> >
> > Though being C++, it is Free Software.
> > Having a import/-export module which depends on a C++,
> > because we don't have a C version is acceptable, because it is optional.
> 
> C++ is less important part of the problem. 
> DWG and version > R14 is the problem.

On the DIME website it says that it is only tested by them
up to version 14, but might work with other versions
and somebody could use it for 2000 files.

> > > dxflib: C++
> > >         DXF only
> > >         "It's at the moment very simple ..." (from home page)
> >
> > We might want to check how simple it actually is.
> >
> > Because of our conversation, Wolgang Lueck pointed out to me
> > that QCAD under GNU GPL has the ability to handle DXF files.
> > We could check if their support is better then DIME or dxflib
> > and suitable for GRASS purposes.
> 
> I know QCAD of course. I tried everything. 

Can you tell me a bit about your findings?
Did you try other things then DIME, dxflib and QCAD?
Which of these libraries would provide the best starting
point if you would develop a completely Free Software library?

> Last year, I wrote also import program based on DIME. 

I assume the source is still available somewhere?

	Bernhard
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