[cad-linux] Re: FSF priority project for dwg reading support

  • From: Rodrigo Rodrigues da Silva <rodrigopitanga@xxxxxxxxx>
  • To: cad-linux@xxxxxxxxxxxxx
  • Date: Thu, 22 Apr 2010 20:02:44 -0300

Please read "I don't fully agree. For two reasons: one, converting
from DWG to *DXF*
potentially causes data loss, since *DXF* is a subset of DWG."

On 22 April 2010 19:57, Rodrigo Rodrigues da Silva
<rodrigopitanga@xxxxxxxxx> wrote:
>>> But surely the libredwg people would love to receive feedback or
>>> encouragements, so don't hesitate to have a look there.
>
> Sure! We definitely need people to test with their files, since every
> file can potentially have a structure that we haven't tested before.
>
>>> I'm actually wondering if those guys are not subscribed to this list...
>
> Yes, I am =]
>
>> I was wondering whether they are aware of the efforts in Blender-world
>>
>> http://wiki.blender.org/index.php/Extensions:2.4/Py/Scripts/Import/DXF-3D
>>
>> where a lot of work has been done on importing dxf, assuming that anyone
>> generating dwg can also generate dxf. And - in the worst case, where you
>> get the dwg from someone, I can confirm that the dwg-dxf converter they
>> use works perfectly fine in wine as a workaround. My guess is that the
>> chances to get someone export a dxf instead of a dwg is just as high as
>> having him export the specific 2000 format that the developers try to
>> support. Still, why not have a group try to support dwg directly, while
>> dxf import improves faster and more relieable.
>
> I don't fully agree. For two reasons: one, converting from DWG to DWX
> potentially causes data loss, since DWF is a subset of DWG. Two, most
> non-hacker people don't even know what DXF is. Talking to engineers
> and architects, I've been told that most AutoCAD files are shared in
> DWG format. It's like asking someone to save their .doc in .rtf.
>
> Two other things: we do support versions other than R2000. R13, R14
> and R2004 are currently working. R2010 (and its variants) is still
> obscure: ODA has reverse engineered it but hasn't released the specs
> so far.
>
> We are also working on write support - if everything goes as expected
> we'll have a SoC student working on it this summer. We are also trying
> to revive out python binding work.
>
> Whereas we have a mostly working library, we haven't released
> officially yet. We will make an alpha release soon if we manage to fix
> some known bugs. Please subscribe to info-libredwg@xxxxxxx for
> announcements. I can announce to this list as well.
>
>
> --
> Rodrigo Rodrigues da Silva
> PoliGNU - Grupo de Estudos de Software Livre da Poli/USP
> FSF Associate Member #7788
>



-- 
Rodrigo Rodrigues da Silva
PoliGNU - Grupo de Estudos de Software Livre da Poli/USP
FSF Associate Member #7788

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