Commit Graph

9 Commits

Author SHA1 Message Date
erwincoumans
ab8f16961e Code-style consistency improvement:
Apply clang-format-all.sh using the _clang-format file through all the cpp/.h files.
make sure not to apply it to certain serialization structures, since some parser expects the * as part of the name, instead of type.
This commit contains no other changes aside from adding and applying clang-format-all.sh
2018-09-23 14:17:31 -07:00
Lunkhound
1c3686ca51 MultiThreaded Demo:
- fixing various race conditions throughout (usage of static vars, etc)
 - addition of a few lightweight mutexes (which are compiled out by default)
 - slight code rearrangement in discreteDynamicsWorld to facilitate multithreading
 - PoolAllocator::allocate() can now be called when pool is full without
     crashing (null pointer returned)
 - PoolAllocator allocate and freeMemory, are OPTIONALLY threadsafe
     (default is un-threadsafe)
 - CollisionDispatcher no longer checks if the pool allocator is full
     before calling allocate(), instead it just calls allocate() and
     checks if the return is null -- this avoids a race condition
 - SequentialImpulseConstraintSolver OPTIONALLY uses different logic in
     getOrInitSolverBody() to avoid a race condition with kinematic bodies
 - addition of 2 classes which together allow simulation islands to be run
   in parallel:
    - btSimulationIslandManagerMt
    - btDiscreteDynamicsWorldMt
 - MultiThreadedDemo example in the example browser demonstrating use of
   OpenMP, Microsoft PPL, and Intel TBB
 - use multithreading for other demos
 - benchmark demo: add parallel raycasting
2016-10-30 12:47:27 -07:00
erwin coumans
645a88176d Enable softness for btRigidBody contacts. This is implemented by some value (CFM, constraint force mixing) to the main diagonal of A.
CFM for contacts use world CFM value by default, and can override with custom CFM value using the
BT_CONTACT_FLAG_HAS_CONTACT_CFM stored in m_contactPointFlags.
Boolean m_lateralFrictionInitialized is replaced 'BT_CONTACT_FLAG_LATERAL_FRICTION_INITIALIZED' flag stored in int m_contactPointFlags in btManifoldPoint.
Enable successive over-relaxation parameter (SOR) for contacts. btMLCPSolver uses global CFM.
In one of the next commits, contact softness will be enabled btMultiBody contacts.
Also need to review use of CFM in btMLCPSolvers (only world CFM is used at the moment)
2016-01-22 17:43:36 -08:00
Erwin Coumans
af5883c6e8 remove a lot of warnings (more todo in demos and serialization code) 2014-08-22 10:29:05 -07:00
erwin coumans
dfa738c13a Properly propagate the applied impulse for the MLCP solvers, so it will be available for contact and non-contact constraints.
Use real-time clock in AllBullet2Demos, rather than hard-coded 1./60.
2014-02-24 13:24:49 -08:00
erwin.coumans@gmail.com
218d4d1394 use a separate default cfm for the MLCP solver, it is a very sensitive value for Dantzig (and Lemke) 2013-10-31 16:52:32 +00:00
erwin.coumans@gmail.com
a1c962192c Allow the ForkLiftDemo to toggle between MLCP and SI solver, using F6 key.
Apply patch for CMake config, see Issue 754 (Issue 753)
Fix a few issue with the MLCP solver: allow split impulse, and fix offset in friction dependencies
2013-10-23 23:35:13 +00:00
erwin.coumans@gmail.com
379f0079e0 Added Dantzig MLCP solver option from Open Dynamics Engine (trying to avoid naming/linking conflicts in case ODE and Bullet is used together)
If an MLCP solver fails, use PGS/SI fallback, add a boolean return value for 'solve' method
2013-10-21 23:27:09 +00:00
erwin.coumans@gmail.com
1ca0493dc4 Build full A matrix and b vector for a MLCP solver interface, to explore Lemke, Dantzig, Newton and other MLCP solvers. The A matrix contains sparsity information.
Added a PGS solver that uses the sparsity of the A matrix, just for testing (the equivalent sequential impulse solver is much faster, not having to allocate the big matrices)
2013-10-20 17:38:14 +00:00