Hi Richard,
Interesting topic!
Just for the reference - I think about 3-4 years ago we discussed the
same thing: using Teigha for reading/writing dxf and dwg.
Back then, I was suggesting the exact same thing like you: using Teigha
- but due to the proprietary license and packaging issues, there was a
lot of opposition towards using Teigha. You have to be a member in the
OpenDesignAlliance and pay a membership fee for being able to
distribute/package the Teigha libraries.
We even did a crowd funding for dxf/dwg support back then:
http://blog.qgis.org/2015/12/08/crowd-funding-project-for-reading-cad-documents-in-qgis/
During that project it was decided to use the libdxfrw library instead
of Teigha. I believe that Jürgen forked and/or improved that library a
lot during the project.
Jürgen can tell you all the details about it.
Greetings,
Andreas
Am 03.04.19 um 11:51 schrieb Even Rouault:
On mercredi 3 avril 2019 11:32:52 CEST Richard Duivenvoorde wrote:
Hi,
Here in NL a lot of municipalities still work with Microstation, so
dgn-files are a common format to use.
FME is capable of converting dgn to whatever format.
But we just found that gdal also has a dngv8 driver [0], but it needs to
be build against the Teiga driver.
QGIS can import autocat dwg/dxf files, I forgot what lib was used for that.
Anybody experience with building GDAL with Teiga?
For Linux, use the following switches for configure:
--with-teigha=path Include Teigha DWG/DGN support
--with-teigha-plt=platform Teigha platform
Like:
--with-teigha=$HOME/Teigha_lnxX64_5.3dll --with-teigha-plt=lnxX64_5.3dll
For Windows, locate the TD_ variables in nmake.opt and tweak them.
BUT: want/could we use this to create a QGIS which is capable of loading
dgn or importing files?
Sure, that works (except automatic styling) if you use a GDAL with Teigha
support
Or is there an licensing or technical problem?
No technical problem per se. Regarding licensing, Teigha is of course
proprietary. I don't recall the terms, but I guess QGIS.org or any other
distributing entitee would have to pay a fee to be able to redistribute a
plugin using their SDK.
Even
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