Search found 83 matches
- Tue May 14, 2019 1:14 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Unexplained behaviour with rigidbody applyImpulse
- Replies: 15
- Views: 14125
Re: Unexplained behaviour with rigidbody applyImpulse
Could you provide some simple example? thanks.
- Mon May 13, 2019 8:15 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
- Replies: 11
- Views: 8913
Re: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
after changing to tag 2.82(git checkout 2.82), i find the GimpactTestDemo. i don't know why it is deleted in the later version. hope it is useful for future user.
- Sun May 12, 2019 9:33 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
- Replies: 11
- Views: 8913
Re: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
add a picture to clarify this case. any ideas about the gimpact mesh is helpful, thanks in advance.
- Sun May 12, 2019 5:23 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
- Replies: 11
- Views: 8913
Re: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
I have also tried using btGImpactMeshShape, with no change in results. Could you post some code of how did you use the btGImpactMeshShape? i will try it later. i find the algorithm for the gimpact need to be regiestered externally like below. btCollisionDispatcher * dispatcher = static_cast<btColli...
- Sun May 12, 2019 4:17 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
- Replies: 11
- Views: 8913
Re: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
your two collison objects all are the concave but now the engine doesn't support the concave vs. convave collision in the narrowphase. you can refer to this function btDefaultCollisionConfiguration::getCollisionAlgorithmCreateFunc() in file btdefaultcollisionconfiguration.cpp for details. i think yo...
- Sat May 11, 2019 9:08 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
- Replies: 11
- Views: 8913
Re: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
i just write a similar test but use two boxes instead of the concave and don't find the issue you said. so next i need the data to create the concave shape. thanks. I know from other posts on this forum that a contact manifold is created in the broadphase based on AABB intersection and may reasonabl...
- Sat May 11, 2019 3:26 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
- Replies: 11
- Views: 8913
Re: Incorrect collision results with concave shapes (contact manifolds, but 0 contact points)
i would like to work with you to find the rootcause if you can provide the sample code.
- Wed May 08, 2019 1:37 pm
- Forum: PyBullet Support and Feedback
- Topic: how to get the weights_dense1_w?
- Replies: 1
- Views: 3120
Re: how to get the weights_dense1_w?
Just for your reference.
1. site-packages/pybullet_envs$ python3.5 -m agents.train_ppo --logdir=./ --config=pybullet_humanoid
2. use the tf.train.NewCheckpointReader(checkpoint_path) to get the parameters that you need.
1. site-packages/pybullet_envs$ python3.5 -m agents.train_ppo --logdir=./ --config=pybullet_humanoid
2. use the tf.train.NewCheckpointReader(checkpoint_path) to get the parameters that you need.
- Wed May 08, 2019 1:33 pm
- Forum: PyBullet Support and Feedback
- Topic: Position control for robot base?
- Replies: 13
- Views: 34874
Re: Position control for robot base?
Moreover, the fact that resetBaseVelocity overrides was confirmed by erwin coumans here: https://github.com/bulletphysics/bullet3/issues/1845#issuecomment-463617025 my understanding is that we shouldn't use the resetBaseVelocity () during a running simulation, but can be used freely before stepsimu...
- Wed May 08, 2019 7:56 am
- Forum: PyBullet Support and Feedback
- Topic: Position control for robot base?
- Replies: 13
- Views: 34874
Re: Position control for robot base?
The way I've temporarily got around this issue is by calling resetBaseVelocity() , although I'm aware that as Erwin stated, these reset commands will override the effects of the physics simulation. hi arpastrana, i understand calling the resetBasePositionAndOrientation() will ignore the dynamic of ...
- Wed Apr 24, 2019 6:19 am
- Forum: General Bullet Physics Support and Feedback
- Topic: btVector, rigibody and Nan
- Replies: 1
- Views: 2528
Re: btVector, rigibody and Nan
it is indeed strange, i think your case needs to debug step by step. i would like to debug with you if you can provide a simple test.
- Mon Apr 22, 2019 8:40 am
- Forum: PyBullet Support and Feedback
- Topic: how to get the weights_dense1_w?
- Replies: 1
- Views: 3120
how to get the weights_dense1_w?
i find many parameters like weights_dense1_w in the example, these parameters should be the result trained by other modules. i want to know where can i find these modules? Any other related document is also helpful. thanks.
- Sat Apr 20, 2019 9:10 am
- Forum: General Bullet Physics Support and Feedback
- Topic: High resolution cloth?
- Replies: 2
- Views: 2835
Re: High resolution cloth?
did you try the Cluster? maybe it can help to make your test work well.
- Sat Apr 20, 2019 9:05 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Cloth self-collision
- Replies: 3
- Views: 3784
Re: Cloth self-collision
//only self-collision for Cluster, not Vertex-Face yet from the comment, it seems that it only support self-collision for Cluster. Could you try these interfaces to enable the cluster? pSoftBody->m_cfg.collisions = btSoftBody::fCollision::CL_SS | btSoftBody::fCollision::CL_RS | btSoftBody::fCollisi...
- Fri Apr 19, 2019 8:37 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Model Scaling
- Replies: 11
- Views: 19488
Re: Model Scaling
hi PcChip,
please add this interface below which should can fix your issue.
please add this interface below which should can fix your issue.
Code: Select all
m_dynamicsWorld->getDispatchInfo().m_allowedCcdPenetration = boundingRadius