User:Sharan.nyn/GSoC18/Log

Development Logs

Community Bonding Period

Due to my semester end exams (Apr 26 - May 17), my time spent during community bonding period was less but I still managed to do the following:

• Week 1
  • Prepared a flowchart to understand how the execution of the rtcheck program works : rtcheck_flow
  • Was introduced to 'gdb' which helped me a lot to analyze the flow.
  • Understood how the front-end portions of rt and back-end portions are connected by linking the view*.c files
• Week 2
  • Read the documentation to understand the RTUIF API : https://brlcad.org/wiki/Developing_applications
  • Understood the origins of libanalyze functions.
  • Discussed some ideas on how to implement the libanalyze function, all were bad ideas because they all involved calling the rtcheck program using execvp() as they usually end with exit().
  • Was suggested a basic plan on how to proceed.
  • Understood how libanalyze functions were used by an example : libged/voxelize.c and libanalyze/voxels.c
• Week 3
  • Complied a version of the rtcheck program by just copying the relevant files to libanalyze/overlaps/.
  • Discussed the plan related to rtcheck in detail.
  • Understood the concept of using contexts and callback functions.
  • Tried out callback functions, implementing a basic callback function that alters an int.

Week 1

• 14/05/18
  • trying to build a new rtcheck command by stripping down the non-necessary parts of the front-end, so that the code is easier to understand.
  • discussed a lot of issues with mentor.
• 15/05/18
  • started working on the design of the libanalyze function
  • all parts of rt/main.c and do_ae() done
• 16/05/18
  • added do_frame(), do_run() and grid_setup() to libanalyze.
• 17/05/18
  • added worker() and do_pixel()
  • used a worker_context to pass data to worker using the void pointer for bu_parallel
  • when I ran the command I was getting segfault at rt_gettrees, thought I'd fix it next day
• 18/05/18
  • figured out the problem but it meant moving a lot of content to libanalyze
  • I did it anyway out of curiosity and it fixed the problem with rt_gettrees still it crashed at rt_shootray!
  • At the end of the day after a lot of debugging and trials, found out that rt_shootray was calling the hit sequence of gqa :O, not sure why.
  • A quick rename of the hit sequence of libanalyze to check_hit solved the problem.
  • Still need to figure out how to call rt_gettrees without moving all function calls to libanalyze.
• 19/05/18
  • Added code to fill the overlap list passed through callback data.
  • Using `gedp->ged_wdbp->dbip` to get the db name instead of asking it before objects.
• 20/05/18
  • Fixed printing of the overlap list.

Week 2

• 21/05/18
  • Clean-up of the libanalyze function :
    • Fixed a derp with setting default values of width and height in libanalyze instead of libged.
    • Removed redundant header files.
  • Read code for libged/gqa.c
  • Prepare patch for the work done in first week.
• 22/05/18
  • Submitted the patch:#488
  • Did follow up and submitted v2.
• 23/05/18
  • Didn't do much today : Read the checker.tcl file for understanding.
• 24/05/18
  • Updated the patch and submitted v3.
• 25/05/18
  • Discussed the plans for refactoring rtcheck.
  • Started work on rtcheck.
• 26/05/18
  • Added plot file output option.
  • Fixed check_overlaps command not showing up in Archer.
  • Submitted patch #491 fixing some minor issues with the accepted patch #488.
• 27/05/18
  • Added old_way of processing stdin.
  • Added command driven way of processing stdin.
  • Have to test the changes, it compiles fine.

Week 3

• 28/05/18
  • Couldn't code in the morning hours. My cousin brother came and played games on my PC all day!
  • Added getting objects from view feature to ged_check_overlaps
  • Tested rtcheck executable for matflag inputs.
• 29/05/18
  • Trying my best to get the display of overlaps working for ged_check_overlaps.
  • Okay it worked but I used temp file so that I could use two inbuilt functions pdv_3line and rt_process_uplot_value. But using them is not needed. So as suggested by Daniel, I will try to merge them together and remove the file dependency and buildup the list in my overlapsHandler.
  • With it I found one more bug with yesterday's work, that if do draw g4 and do checkover_laps g4 then it would consider g4 twice! :/. To solve this Daniel suggested to not consider visible objects if objects are mentioned with command.
  • Success! all worked out with so much minimal code, just 5 lines instead of my initial work that involved 25 lines.
• 30/05/18
  • Fixed bug with overlays considered as visible object on second run.
  • while testing matflag for rtcheck:
    • fixed a bug in tree command.
    • added parsing of az/el in degree/radians values for cm_ae.
    • fixed issue with Multiview giving segfault.
  • Added -r, -R flag to rtcheck.
  • Added -d flag to rtcheck and check_overlaps to print some debug information.
• 31/05/18
  • Fixed a major flaw in the overlapsHandler giving the same data for both reg1 and reg2.
  • Fixed issue of getting first row of plot file as W 0 0 0 0 0 0
  • Added feature to check_overlaps for getting view information from gedp.