User:Vladbogolin/GSoC2013/Logs

Project Info

Project Name	New Cross-Platform 3D Display Manager
Student Name	Bogolin Simion Vlad
IRC nick	vladbogo
Link to proposal	http://brlcad.org/wiki/User:Vladbogolin/Proposal/DisplayManager

Milestones

• Embed Qt in Tk windows
• Drawing
  • Line drawing
  • Text drawing
• Keyboard and mouse integration
• Embedding a framebuffer window

Logs

Community bonding

• 30 May 2013:
  • Updated short description of the project on the melange page.
• 1 June 2013:
  • A first step in implementing the qt display manager. Now it only prints logs similar to txt dm, but has some improvements
• 4 June 2013:
  • Final version of Qt dm patch
  • http://sourceforge.net/p/brlcad/patches/185/
• 14 June 2013:
  • Added to g-voxel (src/conv/g-voxel.c) program the same optional arguments as the src/libged/voxelize.c (-s -t and -d).
  • http://sourceforge.net/p/brlcad/patches/189/

Week 1 (17 - 23 June)

• Weekly milestone:
  • As I haven't worked with Qt before I will focus on getting more familiarized with it this week and also a more detailed look on the existing dm's code to be sure I will not miss anything.
• 17 June 2013:
  • Created a first qt small application. It is not something complicated. I focused on the compilation procedure and how to integrate qt with cmake.
• 18 June 2013:
  • I successfully built a qt project using cmake. I struggled with the difference between Qt4 and Qt5 but finally managed to make a cmake build.
• 19 June 2013:
  • Got commit access
  • Updated the txt display manager patch
    • https://sourceforge.net/p/brlcad/patches/163/
• 20 June 2013:
  • Studied existing cmake files in order to complete integration of Qt with cmake.
  • Found out a FindQt.cmake implementation and tested it: does not work.
• 21 June 2013:
  • Studied existing X-dm implementation, especially the open function.
• 22 June 2013:
  • A short break so I didn't do much today but I've looked on the mged dm files (mged/dm-ogl.c).
• 23 June 2013:
  • Studied some more detailed Qt projects that involve basic drawing.
• Conclusion:
  • Overall it was a good week in which I think I've managed to accomplish the weekly milestone. I still have to clear out some things but I'm confident I can start implementing effectively.

Week 2 (25 - 30 June)

• Weekly milestone:
  • Start implementing effectively and make progress in embedding Qt in Tk window.
• 24 June 2013:
  • Committed the qt display manager patch. It only prints logs now.
  • Additional test to set BRLCAD_ENABLE_QT. Still needs to be improved because at the moment the path to Qt installation should be provided in the CMAKE_PREFIX_PATH.
• 25 June 2013:
  • Integrated Qt in BRL-CAD's cmake build and created a small application to test the integration. Still needs to quiet warnings from Qt files.
• 26 June 2013:
  • A break day so I did not do much work.
• 27 June 2013:
  • IRC discussion regarding various problems: framebuffer to be used by the new display manager (i will start with a null/text framebuffer), fPIC flag
  • Committed changes to complete Qt integration in cmake build and found a suitable solution for the position independent code flag at least for the moment (cmake version 2.8.11)
  • Almost everything ready so tomorrow I will start working effectively to embed Qt in Tk window
• 28 June 2013:
  • Found different ways to quiet warnings from Qt files.
  • Read Qt documentation and studied some basic drawing applications.
• 29 June 2013:
  • Started working on actual embedding.
  • Small steps in order to create the Tk main window.
  • Go back to Bucharest (and hopefully this will solve the internet connection problem which was a little bad here) so today is a busy day.
• 30 June 2013:
  • Dealt with generic Tk window problems such as window type (top-level or embedded), creating a display, window dimension.
  • Almost finished the logic behind the Tk window so that Qt can be successfully embedded in it.
• Conclusion:
  • A lot of things that were needed to be clarified are now clear, especially after the IRC discussion.
  • Tk main window is almost created so I have made some progress in the actual implementation.
  • Still the cmake integration took more that I've expected so I can't say I've made all things I had in mind for this week but this is nothing to be worried about because I am on schedule.

Week 3

• Weekly milestone:
  • Finish embedding Qt in Tk window.
• 1 July 2013:
  • Finished creating Tk main window: now it's displays an empty window.
  • Struggled with a segfault due to doevent(mged/doevent.c) function: solved this by adding an qt_doevent(mged/dm-qt.c) function which does nothing for the moment.
• 2 July 2013:
  • Studied QPixmap examples.
• 3 July 2013:
  • Review existing dm X implementation and focus on pixmap creation.
• 4 July 2013:
  • After updating to the latest sources Tcl_Eval from dm_open failed. Solved it by recompiling the whole code again.
  • Read about QApplication in detail because when I tried to create some Qt widgets I got a runtime error saying that QApplication is required.
  • Looked on the drawBegin function to see how drawing is dealt with in the current implementation.
  • Ignored the float-equal warning for libdm so that the code compiles with strict compilation on.