User:Schindler97/GSoC18/Log

Development Logs

Community Bonding Period

Progress through the community bonding period

• Week 1
  • Reviewed and understood Kanzure's implementation of python bindings : https://github.com/kanzure/python-brlcad
  • Read about ctypesgen and understood it's short-comings and advantages
  • Went through chapters 1-3 of mged tutorials
• Week 2
  • Reviewed and understood nmz787's implementation of python bindings : https://github.com/nmz787/python-brlcad-tcl
  • Delved into understanding how tcl scripts are parsed by mged
  • Implemented the ell primitive following nmz's methodology : https://github.com/Killthebug/python-brlcad-tcl/commit/a0973c5b42615e0ef53ba9c876ee14992e1df937
• Week3
  • Had a discussion with Sean about introducing procedural geometry
  • Went through OpenSCAD's workflow and tried to understand how they work with procedural geometry
  • Went through chapters 4-6 of mged tutorials

Coding Period

Progress through the coding period. Track changes in the current working repo : https://github.com/Killthebug/python-brlcad-tcl/commits/master

• Week 1
  • 14 May Introduced bindings and examples for primitives : arb4, arb5, arb7
  • 15 May Introduced bindings and examples for primitives : tec, trc
  • 16 May Introduced bindings and examples for primitives : rhc, rec
  • 17 May Introduced bindings and examples for primitives : ehy, epa
  • 18 May
    • Introduced primtive : ell1
    • Going through libged to figure out how the 'in' command works. Edit : Found it, thanks to Cezar :)
    • Reading through the code of the ell primitive in librt to understand how primitives behave at a ground level. There's a lot going on, might take me a while to figure everything out.
    • Sean recommended going through the various READMEs scattered across the code, will start on those too and log progress here.
  • 19 May
    • Introduced the primitive : part
    • Trying to understand how certain parts of the pipe() function have been handled by nmz's code.
  • 20 May
    • Introduced bindings and example for : tor, eto & grip
    • Going through to libged/typce.in to understand how it works? Seems good so far.

• Week 2
  • 21 May
    • Introduced bindings and example for the primitive : half
    • I've understood how typec.in functions
    • We're trying to figure out the ??? in : tcl -> .g . src/mged/setup.c (converts tcl to c commands) -> ??? -> include/rt/db_io.h -> .g
    • I learnt about opendb, which calls the f_opendb() function defined in src/mged/mged.c. to open and create new databases, this will be handy in our pipeline.
  • 22 May
    • Fixed primtive examples for arbx and sph
    • Did mged tutorials 6-8
    • Went through libged to understand how it work
  • 23 May :
    • Went through Hacking-BRL-CAD, I really wish I had found this document way earlier!
    • Couldn't get a lot of work done because of a research paper deadline I'm working on.
  • 24 May :
    • I've started documenting the project so far. The major subtopics I'm documenting are :
      • What is python brlcad?
      • How to setup python brlcad?
      • How do the different parts of the code work?
      • Creating geometry using existing primtives
      • Introducing and experimenting with primitives
      • Further Work
  • 25 May
    • Continuing work on the documentation.
    • I'm still not able to build a page using doxygen, I've dropped a message on Zulip and hope to get it resolved soon :)