PhET Progress Report

Sam Reid

August 20, 2009

An online version of this report is available here

Here's a pie chart representation of the time distribution.

Ramp

· Posted 1.03.32 with 16 changes/fixes/features, see link for what's new

· Experimenting with a different rendering loop to obtain good performance on slower systems, this also has the potential to improve performance on other sims where performance is a problem.

1. old algorithm

a. update physical model

b. wait 30 msec

c. view is rendered asychronously

2. trial algorithm

a. update physical model

b. render the canvas synchronously

c. wait however long left out of 30 msec allocated for physics + paint

· Discussing 7 outstanding issues over email with the team

· See to-do list here, includes about 26 issues (of varying complexity)

1. Please find and report bugs or missing features

Misc

· Discussed matlab and polynomial solvers with Chris

· Discussed timeseries and licensing with John

· Discussed changelogs with Dano

Upcoming Work

· Ramp Simulation

· Motion Suite

· Force Law Lab based on NP's interviews

· CCK - new Physics implementation, testing and performance analysis (with Sam M)

· JMonkeyEngine/Xith /3dzzd/Flash/Papervision3d/Feng Gui

· Work on Wicket website with Jonathan