Pymunk - Apply rotational force to shape

[Projet_Peip]

Hi!

First of all, cool free physics engine, I like it so far and find it quite easy to handle.
I feel like this is a dumb question and has probably been asked by millions of noobs already, but I couldn't find anything about it anywhere.

I am currently working on a project that consists in studying the effects of ball shapes interacting in a tube that rotates. I can not make the tube rotate using pymunk but i have heard there is a possibility of applying a force on the balls that fall on my tube shape, that would simulate the rotational force.
However, being a noob, I can't seem to find the function that would allow me to apply that force. Can anybody help me ?
I've tried a couple things, like turning off friction, but nothing worked. I've tried the elasticity function but it doesn't work.

Any ideas?

[slembcke]

Not really certain I understand your question. I would take "Rotational force" to mean torque normally, but I'm not so sure from reading the rest of the description.

What prevents you from making the tube rotate?

[Projet_Peip]

Hello, first things first, thank you for your answer.

We have created an empty circle using the Static polygon function. As said, this body is static, so we can not make it move. We have entered a function alowing us to drop balls where we want by a click of the mouse.

Since the circle is static, we would like to simulate a rotating circle (rotating around it's center). We thought it would be possible to make this circle apply a force to the balls when they colide.

Is this possible ? If so, how can we accomplish such a feature ?

Once again, thank you in advance for your answer(s).

[viblo]

I dont think I fully understand your problem, why not just rotate the circle?