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21 Commits

Author SHA1 Message Date
erwincoumans
fe92de3e50 add infrastructure float btMultiBodyLink m_jointDamping, m_jointFriction (actual damping/friction is in a separate commit) 
add door.urdf for testing damping/friction
 2016-03-17 14:54:46 -07:00
erwincoumans
2920d7e61f Only support btMultiBody multi-dof version (remove non-multi-dof path) 
Use ATTRIBUTE_ALIGNED16 for btMultiBody
Always disable parentCollision for btMultiBody::setupFixed
 2015-11-05 21:17:46 -08:00
Erwin Coumans
7698d5f95c fix some out-of-date comments in btMultiBody, thanks to Thomas Buschmann 
disable disactivation for btRigidBody in import urdf demo, increase strength of joint motor for btMultiBody
 2015-07-15 17:39:43 -07:00
erwincoumans
f6f76901fd First draft of btMultiBody serialization, including optional names for base, link and joints (see ImportURDFDemo/ImportURDFSetup.cpp how this is done) 
Bump up version number to 2.84 because of new serialization data.
 2015-07-09 17:36:00 -07:00
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33b0d429ba apply newForceTorque.diff patch: it will allow to report 
joint reaction force/torque, while using impulse-based response
for btMultiBody
 2015-07-06 16:40:09 -07:00
erwin coumans
6e9eb13235 implement joint reaction forces for mobilizer motor/limit, by passing the constraint forces as 'external forces' and going through the Articulated Body Algorithm 
minor refactor for forwardKinematics, store the cached world transform in each btMultiBody::link
 2015-06-19 15:51:24 -07:00
erwincoumans
89edc40d61 First step in btMultiBody joint force/torque feedback. There is still some work to be done for 'mobilizer limit/motor'. 
See examples/MultiBody/TestJointTorqueSetup and examples/Constraints/TestHingeTorque for joint feedback.
 2015-06-19 09:18:27 -07:00
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41aa58560b add TestHingeTorque example using btRigidBody and btHingeConstraint, setup is similar to TestJointTorque using btMultiBody and a revolute joint. 2015-06-15 23:12:29 -07:00
erwincoumans
794c8ec064 add BspDemo.bsp data file 
add sphere2.urdf
move btSpatialAlgebra into LinearMath
remove some warnings, introduce BT_ZERO, BT_ONE, BT_HALF as defines for 0.f/0., 1.f/1., 0.5f/0.5 respectively
 2015-04-16 10:17:35 -07:00
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27aa959059 fix some btMultiBody URDF conversion issues in ImportURDFSetup 
remove various vertex format structures and use GLInstanceVertex from #include "OpenGLWindow/GLInstanceGraphicsShape.h"
btMultiBody::setupPrismatic takes an additional argument to allow a shift of inertia tensor, relative to the joint frame (link frame at q=0)
 2015-02-12 09:11:55 -08:00
erwincoumans
a159fbac69 Improved URDF support for btMultiBody and separate graphics/collision/inertial frames and shapes 
Fix WinXP GetTickCount64 with a typedef
Expose debug drawing mode/flags in UI (hot keys A,D,L,W for now, buttons later)
GLInstancingRenderer: tweak near/far planes to allow closer approach of camera
btDiscreteDynamicsWorld: enable debug drawing for btGeneric6DofSpring2Constraint
btMultiBodyDynamicsWorld: enable basic debug drawing for btMultiBody
btMultibody: allow center-of-mass shift for prismatic and fixed constraint
 2015-01-22 17:56:24 -08:00
erwin coumans
89addd438e add 'fixed' joint for btMultiBody 
improve btMultiBody version of URDF reader (still work-in-progress)
enabled planar joint for btMultiBody (untested)
enable loading from relative path for .stl meshes
 2014-08-28 18:42:08 -07:00
Erwin Coumans
af5883c6e8 remove a lot of warnings (more todo in demos and serialization code) 2014-08-22 10:29:05 -07:00
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cac50c1a8e remove a few warnings, fix GLInstancingRenderer::drawLines 2014-07-29 11:08:09 -07:00
Erwin Coumans
efd3157d1f only compile Bullet 3 if desired (with CMake) 
remove empty namespace
 2014-05-07 10:19:27 -07:00
kubas
e5372f3712 first experiments with RK4 2014-01-09 00:56:46 +01:00
kubas
cb556f9525 dirty changes - stabilization hacks 2014-01-09 00:51:42 +01:00
kubas
96ff69276f multidof4 patch 2014-01-09 00:26:24 +01:00
erwin.coumans@gmail.com
d4640227ce add option to disable btMultiBody self-collision (for the entire hierarchy) or to disable parent-child collision for jointed links. 2013-10-08 00:50:40 +00:00
erwin.coumans@gmail.com
2fb686b937 change btMultiBody to allow removal/changing of links 
(still not easy to modify the link structure of a btMultiBody -> You have to manually re-link parents, copying links around etc)
 2013-10-03 05:13:41 +00:00
erwin.coumans
f02dd51597 Added a first version of a Featherstone multi body implementation. 
The original version was written by Stephen Thompson.
I replaced Eigen math by Bullet LinearMath, and added a dedicated 6x6 matrix solver. 
Also I integrated support for collisions/contact constraints between btMultiBody and btRigidBody, and de-activation support.
See Demos/FeatherstoneMultiBodyDemo/Win32FeatherstoneMultiBodyDemo.cpp for example usage.
There is currently only support for contact constraints for btMultiBody. 
Next on the list will be adding support for joint limit constraint for btMultiBody. 
The implementation is still experimental/untested, the quality will improve in upcoming Bullet releases.
 2013-10-01 22:50:31 +00:00