利用者:Mx/GSoC2008 Week3

GSoC 2008 - Week 3 report

This week

Like I explained last week, due to the end of the school term, I haven't had much time to work on the project. Nevertheless, I still managed to make a few changes.

Freestyle now renders the object in the Blender scene (see Suzanne example). The scene export is done using Blender's internal 3ds Python script. Since the script cannot be executed directly, I copied it locally in the local Freestyle tree and modified it so that it is executed programatically without UI input.

I also removed some static dependencies, that were formerly fixed at compilation. As of now, the Freestyle runtime uses the environment variable FREESTYLE_BLENDER_DIR to determine the different files needed for execution (style module, Python 3ds export script, paper texture....). Freestyle can now be run without any local modification and on any platform, as long as the FREESTYLE_BLENDER_DIR environment variable correctly points to the directory source/blender/freestyle and the SWIG wrapper module is compiled and linked correctly.

Finally, I modified the view parameters so that the output screen size and ratio are correct. Currently, the scene is observed from the point (0,0,1) and points at the origin (0,0,0). Also, to make rendering efficient, I added a Freestyle initialization function, taking care of instanciating the view and the controller just once.

Next week

To finish the first phase, I need to change the view camera parameters to reflect those of the actual Blender camera (position and orientation) and allow the user to select different style modules from the interface.

I intend to start the second phase the upcoming week. Part of that phase has been covered already (utilizing Blender's Python environment). I will need to do some code study, to understand how the Python API works in detail (to replace SWIG) and how render layers are organized and coded in the render pipeline. I'll need to figure out how to render OpenGL commands "within" a render layer.

With the amount of code I am going to have to study, I don't expect to code extensively. I still hope to have some basic render layer functionality working.

Issues

None

Schedule

According to schedule, I am a week behind, as I was supposed to complete phase 1 last Sunday. If things go as planned, I should have it finished for this week-end's meeting.