This afternoon I stumbled upon "processing".
It looks very promising for the particle modeling I want to do.
You have no examples of ball physics in 3D.
I wish to use balls with charge with possible bonds with other balls
to simulate changes in physiological water to move ions.
So I want to have various size balls for ions, bound balls for H2O,
and other things I have in mind.

I found traer's physics.jar, but can't seem to place it properly
in a directory structure to make it available.

I am very strong in C++ but I'm new to java,
so my question may seem trivial.

Where should I put "physics.jar"?
Traer has example code with the line "import traer.physics.*;".

Processing gives me the following error:
"The package 'traer' does not exist.  You might be missing a library."
"Note that release 1.0, libraries must be installed in a folder named 'libraries' inside the 'sketchbook' folder."

Here is what I'm running and what I've tried.
I run Ubuntu 9.10 linux running Processing 1.0.9
and Processing made a directory named "~/sketchbook".
Exactly what should the pathname be?
I tried:

  1. ~/sketchbook/libraries/physics.jar
  2. ~/sketchbook/libraries/traer.physics.jar
  3. ~/sketchbook/libraries/traer/physics.jar

Any help you can give me will be appreciated.

Thank you.
That worked.
Case closed.