User:Xuwei/DevLog2019

Coummunity Bonding Period

• Set up the Development log
• Set up the development environment such as OS.
• Start to look at the different potential libraries code base.
• Discuss with mentors which external library to choose.

May 16th

• Start to check the checklist.
  • Agreement sent.
  • Dev log created.
  • My Profile created.

May 17th

• Had four of my wisdom teeth extracted. The progress for the following week may be slow due to teeth extraction.

May 18th

• Rest.

May 19th

• Looking at Coin3D/Dime code base, a possible library for DXF import/export.
  • It has no external dependency.
  • It supports all past and should support future version of DXF format.
  • It compiles on Windows, Linux, MacOS, etc.
  • But it only loads DXF files into Dime object hierarchies and saves Dime object hierarchies as files conforming to DXF format.
  • Seems only support 3D.

May 20th

• Looking at BRL-CAD DXF import/export code. Trying to understand how it works and see if it is suitable for OpenSCAD.
  • It converts DXF format to .g and .g to DXF which is a BRL-CAD format.
  • It seems that BRL-CAD does not support the entire format, only the part that is relative to solid-model.

May 21st

• Looking at dxflib which is used by QCAD and works fine, but it only supports 2D which is not ideal since OpenSCAD is already supporting 2D.
  • Maybe we can add the 3D part. But not sure how hard it is to add that.

May 22nd

• Searching for a library that supports both 3D and 2D DXF import/export.
  • Libraries above are for either 2D or 3D.
  • Found some libraries support both but they are written in python instead of C++.