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52 Commits

Author SHA1 Message Date
erwin.coumans
1d4a5d950d Usually m_contactNormal2 == -m_contactNormal1, but not always, so 
use a separate contactNormal1/contactNormal2 for each body in btSolverConstraint.

Thanks to Richard McDaniel for the patch.
 2012-12-12 23:21:51 +00:00
erwin.coumans
84b1774dda improve handling of restitution by using the velocity (linear/angular) before applying forces: this is done by re-introducing the btSolverBody and only apply the forces to solver body, and use the original rigid body velocity for restitution computation. 
warmstarting for contact points was broken, fix in btPersistentManifold
enable split impulse by default (at the cost of some performance)
add  the option for zero-length friction (instead of recomputing friction directions using btPlaneSpace), use the solver mode flag SOLVER_ALLOW_ZERO_LENGTH_FRICTION_DIRECTIONS
precompute lateral friction directions (in btManifoldResult)
remove the mConstraintRow[3] from btManifoldPoint, it just took a lot of memory with no benefits: fixed it in btParallelConstraintSolver
 2012-08-31 19:46:24 +00:00
erwin.coumans
22dc2ca6c3 fix for btGeneric6DofConstraint, when the btRotationalLimitMotor goes over PI or under -PI. 
See http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=5046&p=27113#p27113
Thanks zlash for the fix/report and Flix for the reminder.
 2012-02-18 09:21:16 +00:00
erwin.coumans
4e8596eef5 Added some helper methods for constraints and btMatrix3x3, 
Thanks to  francois, See Issue 466

Prevent crash in SoftBodyDemo, when picking constraints and demo-mode switches to next demo.
 2011-02-27 03:28:53 +00:00
erwin.coumans
c49927b4ed Use cylinder inertia tensor, instead of box, by default. 
See Issue 427

Expose some internal data for constraints,
Thanks to Francois Sugny, see Issue 420
 2010-11-17 23:55:39 +00:00
erwin.coumans
07f51390ea Fix for the non-virtual implementation of btGeneric6DofConstraint (mainly for Cell SPU purposes): 
Need to explicitly call testAngularLimitMotor(i);, because it cannot be called during 'getInfo1', because m_rbA and m_rbB is not available.
 2010-04-05 20:18:53 +00:00
erwin.coumans
d4c3633405 Get rid of btSolverBody and use btRigidBody directly. btSolverBody didn't improve performance after all, due to random-access 
Tweak the BenchmarkDemo a bit: 

1) disable deactivation in graphical mode
2) add some settings that increase performance in the BenchmarkDemo2 (1000 stack) from 35ms to 15ms on this quad core (at the cost of a bit of quality)
 2010-02-11 20:30:56 +00:00
erwin.coumans
2e094c62ac remove a little bit of code duplication, small fix (nrow should be srow), and initialize return value to SIMD_INFINITY for nonvalid parameters/axis. 2010-02-04 23:06:25 +00:00
rponom
5eeb624585 Bug fixed (m_useOffsetForConstraintFrame initialization) 2010-02-04 21:24:47 +00:00
erwin.coumans
1cd52f3d11 Removed empty constructors for constraints, I don't recall why we added them (possibly SPU) but if we really need them we have to revert this. 
Moved static fixed body into a static function 'getFixedBody' to avoid issues when embedding Bullet in C#/CLI managed code.
 2010-02-03 23:02:33 +00:00
erwin.coumans
d58081ce37 Provide easier access to CFM and ERP (and Stop ERP/Stop CFM) for constraints in a similar way to Open Dynamics Engine 
virtual	void	btTypedConstraint::setParam(int num, btScalar value, int axis = -1) = 0;
virtual	btScalar btTypedConstraint::getParam(int num, int axis = -1) const = 0;
	
Parameter can be BT_CONSTRAINT_ERP,BT_CONSTRAINT_STOP_ERP,BT_CONSTRAINT_CFM,BT_CONSTRAINT_STOP_CFM
Axis is 0 .. 5, first 3 for linear degrees of freedom, last 3 for angular. If no axis is specified it will take the 'default' degree of freedom. For a btHingeConstraint this would be the hinge axis (5)
 2010-02-03 22:16:09 +00:00
erwin.coumans
788f48643b remove all warnings on Mac OSX Snow Leopard 2010-01-30 22:31:56 +00:00
rponom
d5f5ddf2f1 Bullet debug draw added 
It is off by default, see attributes of dSolverNode to turn it on
 2010-01-30 04:21:12 +00:00
rponom
e459145b91 Crash bug when "mesh" applied twice fixed 
Constraints reworked - all of them could now work with one or two bodies

Modification of constraint frames and initial positions of rigid bodies
now allowed at start frame only

Plugin version is set to 2.76
 2010-01-23 03:15:43 +00:00
rponom
f919baf03d Improved Slider, Hinge and Generic6DOF constraint setup. 
Turned on by default, use m_useOffsetForConstraintFrame = false to use old setup
Use "O" (capital 'o') button to toggle it in SliderConstraintDemo and ConstraintDemo

Total applied impulse copied back from btSolverConstraint to btTypedConstraint
 2009-11-25 23:52:12 +00:00
erwin.coumans
d67aa861f2 Add support for childshape index for btCompoundShape during ContactAddedCallback, 
see example in Bullet/Demos/ConvexDecompositionDemo
Removed some warnings
 2009-08-11 00:30:41 +00:00
erwin.coumans
1808ec6a0e Some more minor improvements for PS3 SPU version 2009-08-05 23:25:44 +00:00
rponom
99f6ff7cf3 Some fixes to work with constraint angle limits close to -PI or PI 2009-06-12 01:23:47 +00:00
erwin.coumans
a9141d5daf Fix in generic 6dof constraint, when springs/limits/motors are combined 
Added btGeneric6DofConstraint::getRelativePivotPosition to read relative linear position of the constraint frame (pivot)
 2009-06-06 01:09:06 +00:00
rponom
dfa1f033da Bug fix : Instability of spring motor for the 6DOF constraint 2009-05-27 20:20:38 +00:00
rponom
056659d2af "Motor at limit" jitter fixed for btGeneric6Dof constraint 
This also _should_ fix situation when 6DOF constraint with motor get stuck at limit 
(see forum topic at  http://bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&t=3598&p=13603&hilit=ode*#p13603 )
 2009-05-27 00:36:02 +00:00
erwin.coumans
badf723257 Replace all hardcoded 1e30(f) by BT_LARGE_FLOAT, defined in btScalar.h as 1e18(f) so that its square still fits in FLT_MAX 
Thanks to Ole K. for reporting! http://code.google.com/p/bullet/issues/detail?id=206
 2009-05-23 02:15:54 +00:00
rponom
c680791ce9 3 new constraints added : btGeneric6DofSpringConstraint, btUniversalConstraint, btHinge2Constraint 
Motors for btConeTwistConstraint added (for obsolete solver only)
appConstraintDemo changed to test new constraints
Several coding-style fixes
 2009-05-21 22:10:13 +00:00
erwin.coumans
5593a23417 upgrade version of projectfiles, cmake 
fix build for msvc 6.0
 2009-02-06 05:37:37 +00:00
rponom
2766d19d65 Bug in 6DOF constraint fixed 
Twist is now locked when twistSpan == 0 for btConeTwistConstraint
Hinge axis for rigidBodyB is no longer flipped
 2009-02-06 00:04:32 +00:00
rponom
e7ca0e6a9c Bug in Generic 6DOF joint fixed 
Debug visualization of joint constraints was added
 2009-01-16 03:04:07 +00:00
rponom
1991bf3013 Added getInfo1()/ getInfo2() code for joints to support the new SIMD constraint solver 2008-12-25 02:13:46 +00:00
erwin.coumans
5383ed4930 + need to reset rigid body using 'setCenterOfMassTransform' to reset world inertia tensor 
+ fixes in compound algorithm -> recompute contact points
+ add debug drawing to some demos.
+ revert btJacobianEntry change
+ replace dCROSSMAT by btVector3::getSkewSymmetricMatrix
 2008-12-02 04:01:56 +00:00
erwin.coumans
e80feca36b Big work-in-progress refactoring of the constraint solver: 
1) Add fast branchless SIMD support for constraint solver (Windows only until we get other contributions).
See resolveSingleConstraintRowGenericSIMD in Bullet/src/BulletDynamics/ConstraintSolver/btSequentialImpulseConstraintSolver.cpp
resolveSingleConstraintRowGenericSIMD can be used for all constraints, including contact, point 2 point, hinge, generic etc.

2) During this refactoring, all constraints support the obsolete 'solveConstraintObsolete' while we add 'getInfo1' and 'getInfo2' support.
This interface is almost identical interface to Open Dynamics Engine, to make it easier to port Dantzig LCP solver.

3) Some minor refactoring to reduce huge constructor overhead in math classes.
 2008-12-01 06:41:25 +00:00
erwin.coumans
82047e601e updated Bullet sequential impulse constraint solver, so it matches 100% ODE PGS quickstep solver innerloop, mainly by renaming variables... 2008-11-26 00:27:35 +00:00
erwin.coumans
1996004b01 removed a few unused variables 2008-11-08 05:29:19 +00:00
erwin.coumans
bcd0f48c28 some doxygen updates, added some comments to classes, fix broken links, rename some prefix some internal GIMPACT collision structures using (for example use GIM_AABB instead of BT_AAABB), 
removed obsolete btGjkEpa (it was replaced by btGjkEpa2 ages ago)
 2008-11-04 04:01:31 +00:00
rponom
6141a55f09 Added linear and angular motors for the slider constraint 2008-05-23 22:52:51 +00:00
erwin.coumans
bd97c5e569 Fixed warnings in Bullet/src core library 
Thanks Martijn Reuvers from Two Tribes B.V. (www.twotribes.com) for the patch

To make this work more visible, suppress warnings in external libraries in Extras (COLLADA_DOM, libxml and glui contain many warnings)
Added PreprocessorDefinitions: _CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE to vcproj files
 2008-05-10 18:00:21 +00:00
rponom
ce0075c96f Accumulated impulse cleaning for the 6DOF constraint added 2008-03-27 22:31:11 +00:00
ejcoumans
811c105c24 align btQuadWord on 16byte boundary 
slightly improved friction model
 2007-09-25 06:58:53 +00:00
ejcoumans
0300e8fa12 Applied patch/contribution to improve btGeneric6DofConstraint. See also GenericJointDemo/Ragdoll.cpp 
Thanks Francisco Leon/projectileman.
 2007-09-13 07:22:40 +00:00
ejcoumans
ec22825e65 added parallel solver (work in progress) and made modifications to demo/constraints to allow for getting the type without using virtual functions (needed on CELL SPU processors) 2007-08-12 17:27:33 +00:00
ejcoumans
bba61c834c applied some reported bugfixes, angular limit issue, limit scaled from -2.0 -> -1.0 2007-06-23 00:54:08 +00:00
ejcoumans
bc3f9535ad cleaned up, removed warning under MSVC2005 (Level 4) 
Mostly related to alignment and unused variables
 2007-04-13 01:37:21 +00:00
ejcoumans
adfdea5ca6 replaced #include "new.h" to #include <new> 2007-03-06 23:40:06 +00:00
ejcoumans
054d672592 - removed STL from the Bullet library: replace std::vector by btAlignedObjectArray. Also removed the std::set for overlapping pair set, and turned it into an overlapping pair array. The SAP only adds objects, never removed. Removal is postponed for during traversal of overlapping pairs (duplicates and non-overlapping pairs are removed during that traversal). 
- added heap sort and binary search/linear search to btAlignedObjectArray
- fixed wrong cast, thanks Hamstray, http://www.continuousphysics.com/Bullet/phpBB2/viewtopic.php?t=1015
 2007-03-06 09:59:17 +00:00
ejcoumans
df9230327c Contribution to add optional double precision floating point support. Define BT_USE_DOUBLE_PRECISION for all involved libraries/apps. 2006-12-16 05:51:30 +00:00
ejcoumans
6dff5a218e process contact and non-contact constraints inside the same iteration loop 
added first draft for hingeConstraint motor
 2006-12-12 03:15:11 +00:00
ejcoumans
438230b95b added proper clipping of angular limits in generic d6 ConstraintSolver/btGeneric6DofConstraint.cpp 
added trianglebuffer (easier GIMPACT integration)
 2006-11-10 22:56:45 +00:00
ejcoumans
56e135874b added angular limits to the Generic D6 constraint. Works for small angles. Will add a check for different combinations, and use different extraction of ordering of rotation from the diff quaternion. 
Improved vehicle interpolation of wheels, and added Z-up axis option for the Demo
made 'getWorldTransform' const method in btMotionState
added future 'deactivationCallback'(not used yet)
 2006-11-10 04:00:16 +00:00
ejcoumans
db65601f9a added LCP clamp for linear limit on the generic D6 joint 2006-11-07 22:11:15 +00:00
ejcoumans
c3ed55057c - added linear limits to btGeneric6DofConstraint and made sure the linear axis are in local space of objectA 
- use microseconds instead of milliseconds for deltatime
 2006-11-07 02:32:52 +00:00
ejcoumans
bf847b839a another large series of changes, related to the refactoring. 
CompoundShapes are tricky to manage with respect to persistent contact points and swapped order of btCollisionObjects,
During dispatch, finding an algorith etc. order can be swapped.
fixed several other issues, related to SimpleBroadphase (removing a proxy was not working)
 2006-10-06 05:22:13 +00:00
ejcoumans
2b1657b1dd Refactoring: another huge number of changes, renamed methods to start with lower-case. 2006-09-28 01:11:16 +00:00