Possible Bug - btOverlapFilterCallback and btStaticPlaneShap

[cybermax]

Hi,
I am implementing collision matrix stuff for my project(bullet solver in Houdini): http://www.sidefx.com/index.php?option= ... 1e4b#96719
and I think that I found the bug.

I using "Filtering Collisions Using a Broadphase Filter Callback" from this page: http://bulletphysics.org/mediawiki-1.5. ... _Filtering
and problem is when I create ground plane:

Code: Select all

btCollisionShape* groundShape = new btStaticPlaneShape(btVector3(0,1,0),1);
 
btDefaultMotionState* groundMotionState = new btDefaultMotionState(btTransform(btQuaternion(0,0,0,1),btVector3(0,-1,0)));
btRigidBody::btRigidBodyConstructionInfo groundRigidBodyCI(0,groundMotionState,groundShape,btVector3(0,0,0));
btRigidBody* groundRigidBody = new btRigidBody(groundRigidBodyCI);
m_dynamicsWorld->addRigidBody(groundRigidBody);

the function needBroadphaseCollision DONT call If there is collision with ground, otherwise Its call.
but when I replace above code for this:

Code: Select all

btVector3 size = btVector3(1000, 2, 1000);

btCollisionShape *fallShape = new btBoxShape(size / 2);


btVector3 fallInertia(0,0,0);
fallShape->calculateLocalInertia(0, fallInertia);
fallShape->setMargin( 0.001 );

btTransform startTransform;
startTransform.setIdentity();
startTransform.setOrigin(btVector3(0, -1, 0));
btDefaultMotionState* fallMotionState = new btDefaultMotionState(startTransform);

btRigidBody::btRigidBodyConstructionInfo fallRigidBodyCI(
															 0,
															 fallMotionState,
															 fallShape,
															 fallInertia);

btRigidBody* fallRigidBody = new btRigidBody(fallRigidBodyCI);

m_dynamicsWorld->addRigidBody(fallRigidBody);

Everything is OK.