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libredwg-0.6.2 released
     posted by reini_urban, Wed 07 Nov 2018 10:51:55 AM UTC - 0 replies

Important bugfixes:
* Fixed several out_dxf segfaults (#39)
* Enhanced the section size limit from 2032 to 2040.
There were several DWG files with a section size of 2035
in the wild. (PR #41, Denis Pryt)
* Fixed EED realloc on decoding when end - dat->byte == 1 ...


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libredwg-0.6.1 released [alpha]
     posted by reini_urban, Mon 05 Nov 2018 01:07:32 PM UTC - 0 replies

This is a minor bugfix release, fixing
mostly a decoding error with LWPOLYLINE points.

Here are the compressed sources:
http://ftp.gnu.org/gnu/libredwg//libredwg-0.6.1.tar.gz (9.8MB)
http://ftp.gnu.org/gnu/libredwg//libredwg-0.6.1.tar.xz (3.7MB) ...


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libredwg-0.6 released [alpha]
     posted by reini_urban, Mon 13 Aug 2018 09:48:15 AM UTC - 0 replies

See https://www.gnu.org/software/libredwg/

API breaking changes:
* Removed dwg_obj_proxy_get_reactors(), use dwg_obj_get_reactors() instead.
* Renamed SORTENTSTABLE.owner_handle to SORTENTSTABLE.owner_dict.
* Renamed all -as-rNNNN program options to --as-rNNNN. ...


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Revealing unknown DWG classes (2)
     posted by reini_urban, Fri 27 Jul 2018 09:55:16 AM UTC - 0 replies

I've added more solver code and a more detailled explanation to the HACKING file, to find the binary layout of unknown DWG classes, in reference to public docs and generated DXF files. See https://savannah.gnu.org/forum/forum.php?forum_id=9197 for the first part. ...


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Revealing unknown DWG classes
     posted by reini_urban, Fri 13 Jul 2018 10:11:01 PM UTC - 0 replies

I implemented three major buzzwords today in some trivial ways.

  • massive parallel processing
  • asynchronous processing
  • machine-learning: a self-improving program

The problem is mostly trivial, and the solutions also. I need to
reverse-engineer a binary closed file-format, but got some hints from ...


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Major speedup for big DWG's
     posted by reini_urban, Mon 11 Jun 2018 06:15:49 PM UTC - 0 replies

Thanks to David Bender and James Michael DuPont for convincing me that we need a hash table for really big DWGs. I got a DWG example with 42MB, which needed 2m to process and then 3m to free the dwg struct. I also had to fix a couple of internal problems. ...


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Enabled r2018 support
     posted by reini_urban, Mon 04 Jun 2018 08:40:47 AM UTC - 0 replies

I finished now reading the remaining DWG formats r2010, r2013 and r2018.
The only DWG read limitations are now:

  • pre-R13: some entities, all blocks
  • r2010+ Some AEC EED (Autodesk Architectural Desktop) objects.
  • Untested: FIELDLIST, AcDbField, TABLECONTENT, TABLEGEOMETRY, GEODATA, WIPEOUTVARIABLE ...

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Smokers and mirrors
     posted by reini_urban, Tue 08 May 2018 04:13:26 PM UTC - 0 replies

I've setup continuous integration testing for all branches and pull requests at https://travis-ci.org/LibreDWG/libredwg/builds for GNU/Linux, and at https://ci.appveyor.com/project/rurban/libredwg for windows, which also generates binaries (a dll) automatically. ...


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New hackers' wiki
     posted by pitanga, Wed 13 Jan 2010 01:41:11 AM UTC - 0 replies

In an attempt to build a tool to assist development, with developers focused documentation like compiling, testing, sending patches and whatever we think might be useful, I've created the LibreDWG hackers' wiki, hosted at LibrePlanet: http://groups.fsf.org/wiki/LibreDWG. Feel free to contribute as well.

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