Work Progress - May 25 to May 29

Study of Java Physics Engine mentioned in week May 11 to May 15

• Relevant demos: Demo 16 and demo 18 - both having a box sliding along a line, doing rotation on hitting something.
  

• To run the demo, download both the core jar and test jar files. Then in command prompt, run the following command: java -classpath .;phys2d-060408.jar;phys2d-test-060408.jar net.phys2d.raw.test.DemoXX where XX is the number of the demo (16 or 18). Alternatively, I have ported the source code to a NetBeans project. One can run the demo by double-clicking on the .bat file after uncompressing this.

Integrating Physics Engine into Team A2 skateboarder code

• Working code: here
• Current progress: Using Physics Engine to calculate the displacement and velocity (both linear and angular) of the skateboarder. Displaying skateboarder of a particular angular displacement correctly. Displaying BoardLine with a particular slope correctly.
• Next step: Clean the code (e.g. the collision handling/auxiliary code in the BoardLine and SkateBorder classes). Import it back to repository (after the pCSDT code update by Jason).
  

Work Progress - May 18 to May 22

Task: Move work in Team A2 code to the repository, without changing any pCSDT code in the repository.

• Start code: http://www.rpi.edu/~laut/startcode0520.zip
• Completed code: http://www.rpi.edu/~laut/csdt_05211200.zip (NOTE: [1] Changes on SB/ folder is visible when opening this NetBeans project, and viewing the source code in NetBeans. [2] The code has yet been moved to the repository. Modification of pCSDT code by Jason may require further change on the SB code.)

Next step: Complete angular momentum code

• Start with the A2's code.
• The physics of line rider: http://blog.dotphys.net/2008/09/the-physics-of-linerider/ (No info on angular momentum...)
• Study on Java physics engine in previous week
  

Work Progress - May 11 to May 15

Collecting expectation on my contribution:

• Finish collision detection in the skateboarder
• Review code from the skateboarder team to see what can be salvaged and moved into the repository proper.

Summarizing useful resource:

• Repository: http://www.mspc2.com:8089/svn/csdt (User name and password in a May 10 email, command: svn co http://www.mspc2.com:8089/svn/csdt --username username --password password, short note on making it run at here)
• Team A2 source code on skateboarder - compile.bat to compile, runprog.bat to run: Link
  
• A Java physics engine: http://www.cokeandcode.com/phys2d/

Identifying the part of code to finish (referencing the Team A2 code first, then contributing my own):

• SB/SkateBoarder.java: the Impulse(SbVector r, SbVector J) method
• SB/BoarderEngine.java: Step(double dt) method [the one method I need to work mostly on], Seek(double t) method