Real-Time Physics Simulation Forum

Thanks for your reply.

Hi,
Is it possible that the disableCollisionsBetweenLinkedBodies has stopped working in one of the recent updates?
Our constrainted links now collide even if the flas is set to True.
Anyone has noticed any issue with that?

Thanks for your reply! I have changed my previous description to be more clear on what I want to achieve, I think I did not express myself properly the first time.

Hi, I am using Generic6DofSpring2 constraints and I would like to find an easy way to reset the constraint to the initial position. It is a quite particular case in which the parent body is static and the child (connected with the constraint) is dynamic (mass>0). I am running the constraint with a m...

Hi,
I am looking for a way to know if a body with a collision shape is having a collision with another collision shape. Is there any method to get the answer as a boolean (True if it has one or several collisions), or a way to get the total number of collisions points?

Hi, I am trying to avoid using DISABLE_DEACTIVATION flag and trying to find a more efficient way to handle objects that go to sleep being on top of another object. The object bellow is able to apply lateral friction using a customMaterialCallback (to simulate a conveyor) but when it stops, after a b...

I have played a bit with negative forces to simulate magnets and it can work pretty well if you adjust the forces and masses properly. I would suggest you to use a customMaterialCallback to apply forces using the contact normals, by I wonder if it is possible to implement customMaterialCallbacks in ...

Hi Erwin, Right now I would prefer to use Python to interface the physics engine. If we see any performance issue we could move to C++. I think it is great to have the option to run the physics server in another computer, so I guess shared memory/C++ is not an option... - Motion States: A method tha...

Hi Erwin! I have been using pybullet for some days now and I would like to start implementing the plugins we discussed above: - Motion states. - Collision filters for ray tests. - Using Custom materials. Can you help me to get started? Any document that explains how to introduce new plugins? Thanks ...

Thanks for your answer Erwin! I will definitely give pybullet a try and see if I can learn how to program a plugin. Do you have any documentation or should I check the source code and figure it out? As I wrote, I will be happy to contribute or help if possible. I leave the link to my old project (I ...

Hi everyone! First of all, I want to thank you for the great job you are doing with the Bullet Physics library! I have been using Bullet 2 for many years now, but mostly in python, thanks to a wrapper I found on the internet and I have been maintaining and developing further. Now I am considering mo...

Hi, I have a working simulation environment where I have some rigid bodies (static and dynamic) and some ghost objects (PairCaching). The idea is that the ghost objects are used to detect some of the dynamic objects (like sensors) but without colliding (Flag->NO_CONTACT_RESPONSE). To complicate the ...

Thanks for your reply Basroil! Could you share your knowledge and the approach with me? Do you have any paper I could read? My research is not related to be able to mirror the robot itself, but this is something could help me to achieve my primary goal. Your results are really impressive, but I can ...

Hi, I want to try to mirror the movements of a real robot for a research project. The idea is to get the rotation of each axis from the real robot controller via Ethernet, create a virtual robot using Bullet, and try to make the Bullet robot move "exactly" the same, or at least follow as c...

I have still these open issues, can somebody help me please?
NOTE: Curiously if I using "Dantzig" solver it works well, so, is it a bug in the default solver?