how to move particles along a path

[Fred Chuit]

Dear EJS-users,

I am looking for a way to move a large number of particles (circles) along paths, like a chain.
If possible the particles should change colour depending on their position.
Is there a nice way in EJS to do this or do I have to work particle by particle?

Please, look at the drawing to get an idea what I mean.
Already many thanks for any help.
Regards,
Fred

[Fu-Kwun Hwang]

Please check out the following applets:

    
RC circuit (DC: charge/discharge)
RLC AC circuit
or
    
Rectifier circuit

For color to change according to their position, you need to define an array  for color object, and set their value from coordinate.