Re: [libredwg] [news] Autodesk and Open Design Alliance Reach Agreement for Autodesk DWG Trademarks

[address@hidden]

I have started on the header files used by gdal/ogr to extract compatible headers that will be able to be compiled against gdal. Basically I am adding in the types only based on the usage, without referencing DirectDWG (which I have never seen) this is a perfectly legal way to create the header files.

Currently, it has only stubs and does not compile totaly, yet, but it is a start.

github here :
http://github.com/h4ck3rm1k3/InDirectDWG

get the gdal svn 

cd /experiments/gdal/
svn co https://svn.osgeo.org/gdal/trunk/gdal
see page here :http://trac.osgeo.org/gdal/wiki/DownloadSource

git clone address@hidden:h4ck3rm1k3/InDirectDWG.git

get the dxfdwg client code that we use as the indirect definition of the DirectDwg :

cd /experiments/gdal/gdal/ogr/ogrsf_frmts/
svn checkout http://svn.osgeo.org/gdal/spike/dxfdwg

Configure in the root dir like this  using my code as the dwgdirect. 
cd /experiments/gdal/gdal
./configure --with-dwgdirect=$PATHTO/libredwg

make -C /experiments/gdal/gdal/ogr/ogrsf_frmts/dxfdwg

mike

On Thu, May 6, 2010 at 7:36 AM, address@hidden <address@hidden> wrote:

Wow,
Libogr uses dwgdirect, now that is really worth working on.

here are some I found :
http://code.google.com/p/gdal-kml/
http://code.google.com/p/tf-net/

here is some sketchup plugin for dwg:
http://download.sketchup.com/OnlineDoc/gsu_mac/K-Input_and_Output/Import_and_Export/IO-DWGDXFExport.htm

I will start on gdal, I will build header files for all gdal/ogr usages of dwgdirect and rebuild the header files from that.

mike

On Thu, May 6, 2010 at 7:24 AM, address@hidden <address@hidden> wrote:

Ok,
lets make a list of all open source software the uses DWGDirect and I will compile based on that, an ersatz API that fits the function templates. That way we can at least liberate the free software from the clutches of EVIL.
mike

On Thu, May 6, 2010 at 1:02 AM, Rodrigo Rodrigues da Silva <address@hidden> wrote:

On 05-05-2010 02:25, address@hidden wrote:

interesting, so does that mean there will be more progress.

I wouldn't say so. Open Design has released new libraries with R2010 support, but hasn't updated the publicly available specs. That means, they have reverse engineered R2010 but have not released it.

Is anyone here a member of this group?
are we working on api compatibility with opendesign libs?
does anyone have header files?

No, the headers are not available unless you pay for membership. Nonetheless, I think it would be illegal to copy them since they are non-free, I suppose.

Anyway, I've seen software that uses DWGDirect and the API seems too complicated. I think that our API approach, at least what we've done so far, is simpler and easier to use.

--
Rodrigo Rodrigues da Silva
GNU LibreDWG maintainer
FSF Associate Member #7788

PoliGNU - Grupo de Estudos de Software Livre da Poli/USP