From BlenderWiki
GSoC14 - Weekly Report #10
July 19 - 25th - BGE Cleanup and Support
This Week
The plan for this week was to wrap up the scene graph: 2-3 bugs left in the tracker and pending questions from the mailing list; and to start looking at physics bugs and code.
- I spent easily about 1/3 of my time just communicating: replying to emails, the tracker, the mailing lists and following up news.
- scene graph: I reviewed some parts of the code, cleaning up comments and style.
- Then I picked the first bug with a problematic parent transform -> T33512. I reviewed more parts of the code looking for a wrong matrix multiplication.. something transposed (because the GE math library is misaligned with the rest of blender and OpenGL)...
- I found the math library used for the ge rather ill suited for the job. I reviewed my math concepts, as it is the second day with the bug already. I asked for help, and here I have very positive feedback with sergey helping me a lot plus bastien, campbell and joshua leung all discussing the problem.
- Turns out that the way the ge does the hierarchical transform math - component wise instead of with direct matrix multiplication - will always lead to this kind of problems. It needs to be all changed, and that is not a quick task, specially if merged with replacing the math library.
- So I spent 3 days with this problem, plus some time to document it, because I have no time left on my soc to solve it.
- The scenegraph developer documentation is basically finished. I moved there the rest of the questions I posted on the mailing list early in the week. Aligorith was very helpful with a fast complete response, but then I am lacking feedback from someone from the gameengine side.
- The documentation has a 'questions' and 'problems' section including the problems above with the transform and the math library. I also made a related task on phabricator, I am still trying out the best way to coordinate/communicate.
- I had no time left to start the physics (just read some more things).
- The input bug from last week: putting it into a new design task.
- My branch is undergoing review and it should be merged soon.
- I updated the wiki with the end term goals and planning. I have basically 2 weeks left, because, for the pencils down week, I will be at Siggraph. Also, there is a trello now.
- In short, goals are scene graph, physics, less bugs and more documentation.
- After this week, I can no longer do the scene graph *and* the physics. I had not considered that the scenegraph problems could take so much time to solve. Most bugs in the tracker are either invalid or really difficult/time consuming to solve :( I decide for the physics, because it would yield more results as there is currently no maintainer.
General Development
Fixed (Reported)
- None
Fixed (Unreported)
- None
Closed / Archived / Invalid
- T30082 - Wrong blf font resolution with non-standard focal length/orthographic scale
Total: 0 fixed, 1 closed
Next Week
- tackle the physics bugs in the tracker. There are currently 46.
- start working on the physics documentation and demo files.
