4 the rules for this file:
5 * entries are sorted newest-first.
6 * summarize sets of changes - dont reproduce every CVS log comment here.
7 * don't ever delete anything.
8 * keep the format consistent (79 char width, M/D/Y date format).
10 ------------------------------------------------------------------------------
11 10/25/09 Oleh Derevenko
12 * Macros changed to static inline functions in odemath.h and related files.
13 Some code duplication has been eliminated across the files.
15 09/05/09 Oleh Derevenko
16 * dWorldStepFast1 API removed along with dWorld[Get/Set]AutoEnableDepthSF1
18 08/29/09 Oleh Derevenko
19 * Fixed uninitialized floating point array used in computations.
21 08/12/09 Oleh Derevenko
22 * A typo fixed in dGeomCopyOffsetRotation() (final_posr was used instead
23 of offset_posr). Reported by Tilmann.
26 * Made sure neither dSINGLE or dDOUBLE is defined by default; the user
27 should always explicitly specify the precision.
29 06/27/09 Oleh Derevenko
30 * New functions have been added:
31 - dWorldUseSharedWorkingMemory
32 - dWorldCleanupWorkingMemory
33 - dWorldSetStepMemoryReservationPolicy
34 - dWorldSetStepMemoryManager
36 06/25/09 Remi Ricard (papaDoc)
37 * Add limit to the to the second axis of the universal joint
40 06/14/09 Oleh Derevenko
41 * dWorldQuickStep re-implemented to avoid memory allocation on stack.
42 Also several optimizations have been made to decrease memory
43 requirements and optimize algorithm implementation of dWorldQuickStep.
44 dWorldStep still remains with old memory allocation however new APIs
45 mentioned below are fully functional for it.
46 Both dWorldStep and dWorldQuickStep have been changed to return boolean
49 * dInitODE2() changed to automatically call
50 AllocateODEDataForThread(dAllocateFlagBasicData) after library
51 initialization as this is a required initialization minimum that
52 must always be performed anyway.
55 * Removed aliasing issues from OPCODE/Ice, plus some other warnings.
56 Now it builds on gcc 4.3.2 with '-Wall -Werror -O3".
58 05/30/09 Oleh Derevenko
59 * A minor memory usage optimization for QuickStep.
62 * Made the new trimesh collider the default.
63 * Added a "-texturepath" option to drawstuff.
65 05/18/09 Oleh Derevenko
66 * Heightfield rotation fixed to avoid NaNs while rotating infinite
69 05/03/09 Oleh Derevenko
70 * Incorrect parameter order fixed on contact merging in Sphere-Trimesh
71 collisions. The bug resulted in merged contact remaining with normal
72 of first contact found. Thanks to Dimitris Papavasiliou for reporting.
75 * Fixed bug #2685170: use the C99 __func__ instead of __FUNCTION__ when
76 a C99 implementation is available.
78 04/07/09 Remi Ricard (papaDoc)
79 * Remove unused code in demo_joints.cpp, reported by Tilmann.
81 04/07/09 Remi Ricard (papaDoc)
82 * Fix bug in collision categories in demo_jointPU, reported by Tilmann
84 03/14/09 Oleh Derevenko
85 * A possibility to initialize/close ODE multiple times recursively has
87 Also, now a call to dSpaceSetManualCleanup() is required for each
88 space right after creation if ODE has been initialized in thread data
91 03/07/09 Oleh Derevenko
92 * Thread local data has been cleaned up from OPCODE and OdeTls as it is
93 not used (OPC_SweepAndPrune.* and OPC_BoxPruning.* have been removed
94 - rebuilding project files is necessary).
97 * New house of cards demo, which stresses the friction handling stability.
99 01/29/09 Remi Ricard (papaDoc)
100 * Fix bug: Fix problem when attaching no body to a joint. Before calling
101 setRelativeValues a check is made for bodies.
104 01/28/09 Daniel K. O.
105 * Applied patch #2538046: Heightfield AABB bounds patch.
107 01/23/09 Remi Ricard (papaDoc)
108 * Add new function dJointSetUniversalAxis1Offset and dJointSetUniversalAxis2Offset
109 * Add unittest for those funcitons.
111 01/23/09 Remi Ricard (papaDoc)
112 * Fix problem with dJointGetUniversalAngle2 when the joint is attached to
113 only a body 2. The sign was inverted.
114 * Add unit test to verify for this problem
116 01/21/09 Remi Ricard (papaDoc)
117 * Fix bug reported by Tilman: dxJointPU::getInfo1 was setting twice the
118 limit of limot1 to zero and not limot2
120 01/17/09 Daniel K. O.
121 * Fixed a bug in dSpaceCollide2: if both geoms are not in spaces they would
122 not have valid AABBs.
124 12/20/08 Daniel K. O.
125 * New functions: dJointEnable, dJointDisable, dJointIsEnabled
128 12/19/08 Daniel K. O.
129 * Removed inline asm statements that break builds on 64-bit VC++.
131 12/09/08 Daniel K. O.
132 * Applied patch #2381592, which adds support for Kinematic Bodies.
134 12/06/08 Oleh Derevenko
136 * Applied a patch by Martijn Buijs to make GIMPACT trimesh-ray collisions to
137 be consistent with those in OPCODE.
138 * Swapped geometries returned in contacts for OPCODE Trimesh-Plane collisions
139 as they were returned in unnatural order being different from that in GIMPACT
140 * Applied a patch by Martijn Buijs to make side1, side2 fields of contact
141 structure be always initialized, either with -1 for non-trmesh geometries
142 or with triangle index for trimeshes. These fields were only assigned for
143 trimesh-trimesh collisions before.
144 * dGeomTriMeshSetTriMergeCallback/dGeomTriMeshGetTriMergeCallback API added
145 to set/get user defined callback procedure for trimeshes that would be
146 invoked when contacts are merged to let user code accumulate attributes of
147 original contact triangles and generate a fake index by which it would
148 later be able to determine those attributes. If the callback is not
149 assigned (the default) -1 is generated as triangle index for merged
150 contacts (there was an index of first of merged triangles before!!!).
151 The callback is currently used within OPCODE trimesh-sphere and OPCODE
152 new trimesh-trimesh collisions.
154 11/20/08 Remi Ricard (papaDoc)
155 * Fix problem with dJointGetPUPosition and
156 dJointGetPUPositionRate when the joint is attached to only
157 a body 2. The sign was inverted.
158 * Fix bug: When a pu joint had only one body attached to position 2,
159 dJointAttach(jId, 0, bId). The body was not push in the right direction to
160 move back between the limits.
161 * Add unit test to check the above problem
162 * Add the function void dJointSetPUAnchorOffset
163 * Make the function void dJointSetPUAnchorDelta deprecated
165 11/19/08 Remi Ricard (papaDoc)
166 * Fix bug: When a pr joint had only one body attached to position 2,
167 dJointAttach(jId, 0, bId). The body was not push in the right direction to
168 move back between the limits.
169 * Add unit test to check the above problem
171 11/19/08 Remi Ricard (papaDoc)
172 * Fix problem with dJointGetPRPosition and
173 dJointGetPRPositionRate when the joint is attached to only
174 a body 2. The sign was inverted.
175 * Add unit test to check the above problem
176 * Increase the tolerance to remove failure in unit test
177 * Remove compilation warning in unit test with the use of REAL()
179 11/18/08 Remi Ricard (papaDoc)
180 * Fix bug: When a piston joint had only one body attached to position 2,
181 dJointAttach(jId, 0, bId). The body was not push in the right direction to
182 move back between the limits.
183 * Add more functionality to demo_piston.cpp
184 * Run astyle on modified files.
186 11/18/08 Remi Ricard (papaDoc)
187 * Fix bug: When a slider joint had only one body attached to position 2,
188 dJointAttach(jId, 0, bId). The body was not push in the right direction to
189 move back between the limits.
191 10/29/08 Oleh_Derevenko
193 * Premake scripts changed to only include chosen collision library
194 sources in project on Windows. --all-collis-libs premake option
195 added to allow inclusion of all collision library sources into the
198 10/15/08 Remi Ricard (papaDoc)
199 * Applying patch #2158425 64-bit GIMPACT provided by Mark
200 William. This patch enable GIMPACT to works on 64-bit machine.
202 10/15/08 Remi Ricard (papaDoc)
203 * Add function dJointGetPRAngle and dJointGetPRAngleRate
205 10/15/08 Remi Ricard (papaDoc)
206 * Enable the motor on the rotoide part of the PR joint
208 10/15/08 Remi Ricard (papaDoc)
209 * Add unit test to check if using directly a joint
210 or using after setting with default values is the same.
211 * Add function setRelativeValues called in dJointAttach for
214 10/10/08 Remi Ricard (papaDoc)
215 * Fix bug in dJointGetPUAxis2. The axis was not multiplied with the
216 the rotation matrix of the good body.
217 * Fix bug if there is only one body on the PU joint the axis returned
218 was not the right one.
219 * Add unit test to verify previous bug.
221 10/03/08 Rodrigo Hernandez (Kwizatz)
222 * Added Blender script to create ODE convex geoms under tools.
224 10/01/08 Rodrigo Hernandez (Kwizatz)
225 * Convex-Convex collision detection code is finally stable.
227 08/31/08 Daniel K. O.
228 * Applied patch 2080674: Improved dBodySetRotation; now exact rotation
229 matrices are preserved until the next simulation step.
231 08/07/08 Daniel K. O.
232 * Fixed strict aliasing issue that was breaking the new trimesh collider.
234 07/24/08 Daniel K. O.
235 * New functions: dBodyGetGyroscopicMode and dBodySetGyroscopicMode
238 07/15/08 Remi Ricard (papaDoc)
239 * Add a new define ODE_API_DEPRECATED to mark function as deprecated
242 07/14/08 Remi Ricard (papaDoc)
243 * Finish adding patch 1336066: Joint feedback in quickstep by jsinecky
244 * demo_boxstack.cpp can now print joint feedback
246 07/11/08 Daniel K. O.
247 * Bumped version for 0.10.1
248 * Added proper usage of libtool's version info.
250 07/10/08 Remi Ricard (papaDoc)
251 * Add new function dJointSetPistonAnchorOffset
252 * Add unittest for the piston joint
253 * Fix problem with dJointGetPistonPosition and
254 dJointGetPistonPositionRate when the joint is attached to only
255 a body 2. The sign was inverted.
257 07/09/08 Remi Ricard (papaDoc)
258 * Optimize function Multiply1_12q1 in quickstep
259 Patch proposed by Riemer v.d. Zee and modified by Patrick Baggett
261 07/08/08 Remi Ricard (papaDoc)
262 * Update the slider joint to have the same behavior as the other joint
263 when there is only a body2 attached to it.
264 * Update documentation for the slider joint.
265 * Remove warning by using REAL()
266 * Add new unittest for dJointGetSliderPositionRate
268 07/08/08 Remi Ricard (papaDoc)
269 * Update unittest for the slider.
270 * Rename the new function dJointSetHingeAxisDelta to
271 dJointSetHingeAxisOffset. This remove will remove confusion with
272 the old function dJointSetHingeAnchorDelta
273 * Update documentation for the Hinge unittest
274 * Remove warning by using REAL()
276 07/07/08 Daniel K. O.
277 * Max Correcting Vel doesn't affect bounciness, as before.
279 07/03/08 Remi Ricard (papaDoc)
280 * Add new function dJointSetHingeAxisDelta
281 * Add unittest for this new function
283 06/17/08 Remi Ricard (papaDoc)
285 * Move the computation of the Relative Rotation for the slider joint
287 * Add unittest for to check qrel
289 06/17/08 Remi Ricard (papaDoc)
291 * Remove unused variables.
292 * Remove a conversion warning between unsigned int and int
294 06/17/08 Remi Ricard (papaDoc)
296 * Move the function hingeComputeRelativeRotation as a member of
297 the hinge structure/class.
299 06/17/08 Remi Ricard (papaDoc)
301 * Move the computation of the Relative Rotation for the fixed joint
304 06/16/08 Remi Ricard (papaDoc)
306 * Add testunit for the dxJointFixed
308 06/04/08 Daniel K. O.
310 * Moved joints to ode/src/joints, converted them to true virtual
313 06/02/08 Daniel K. O.
315 * Added an Auto<T> template to step.cpp to handle memory deallocation.
317 05/09/08 Daniel K. O.
319 * Applied patch #1335202: Contact Joint Motion (with some corrections),
320 and added demo_motion.
322 05/01/08 Oleh_Derevenko
324 * Memory leak in GIMPACT fixed (reported by Derek)
326 04/28/08 Oleh_Derevenko
328 * Added possibility to collide a space of lower sublevel as a geometry
329 against another space of a higher level with dSpaceCollide2.
330 dSpaceSetSublevel/dSpaceGetSublevel are used for sublevel assignment/
333 04/27/08 Oleh_Derevenko
335 * Fixed incorrect memory copying which could lead to memory corruption
336 in GIMPACT (luckily, in unused code)
337 * Fixed possible memory read beyond the end of allocated buffer along
338 with unnecessary extra memory copying in GIMPACT.
339 * Fixed buffer reserve being incorrectly reset to zero for bitsets
340 what resulted in unnecessary memory reallocations in GIMPACT.
341 * Implemented support for ability to run collision detection from
342 multiple threads for separate spaces.
344 04/14/08 Oleh_Derevenko
346 * Fixed possible memory corruption in new trimesh-trimesh collider
347 in case if two degenerated triangles are checked against each other.
349 04/12/08 Oleh_Derevenko
351 * Fixed sporadic assertion failure on vector normalization caused
352 by small triangles degenerating into segments during space
357 * Fix a bug in dJointXXXGetInfo. The value in limot.limit was not
358 always updated. (Ex: If hi and lo limit were changed).
362 * Added a new Joint: Prismatic Universal (patch #1828454).
366 * Fixed bug #1841309: collide2() method buggy.
370 * New function: dVector4Copy.
374 * Added stub calls for trimesh functions.
375 * Applied patch #1914232: dGetConfiguration.
376 * Applied patch #1655333: Optimize the function dNormalize3.
377 * New function: dSetColliderOverride.
378 * New function: dCheckConfiguration.
382 * Disabled building shared library by default with autotools.
386 * New function: dJointGetNumBodies (patch #1901550).
387 * New function: dSpaceGetClass (patch #1901637).
388 * Applied patch #1901649: Add missing function in the export
392 * Fixed drawstuff build issues on OSX.
394 01/12/08 Daniel K. O.
396 * Fixed a typedef bug in configure.in.
397 * Added dCylinder to the C++ wrappers.
398 * Applied patch 1851394: support for GIMPACT with double precision,
400 * Moved bunny geometry to bunny_geom.h.
402 12/11/07 Daniel K. O.
404 * Added damping and MaxAngularVel() functions.
405 * Const-correctness: added const qualifier to some dWorldGet and dBodyGet
407 * Updated the odecpp.h header.
409 12/07/07 Daniel K. O.
411 * Removed most of the compiler warnings from Drawstuff, ODE and
413 * Upgraded automake requirement to 1.10, and change some Makefile.am
417 * Modified autotools to use libtool for
418 library generation and administration
419 * Removed release and debug flags for configure.in
420 CPPFLAGS, CFLAGS, CXXFLAGS should be set by the
421 user to their liking, respecting autotools policies.
423 11/30/07 Daniel K. O.
424 * Applied patch 1813079 (moved callback)
425 * Replaced moveAndRotateBody by dxStepBody in stepfast.cpp
429 * Added 'Sweep and Prune' collision space.
430 * New Piston joint type with demo, by Remi Ricard
431 * Added build option to use 16-bit indices for OPCODE trimesh
435 * Integrated Christoph Beyer's average based sampling system for body
438 10/26/06 Francisco Leon
440 * Totally refactored trimesh collision system.
441 Using GIMPACT instead of OPCODE. Now works correctly, and faster.
442 Visit http://gimpact.sourceforge.net.
444 * Finally, test_moving_trimesh.exe works nicely.
446 * Fixed autodisable system. Now is possible to set bigger sleeping
447 threshold values and objects won't be sleeping on the air. They will
448 rest on the floor properly.
450 * dInitODE function added.
452 * Is Obligatory to call dInitODE() at the beginning for initialize ODE,
453 and calling dCloseODE() when the program ends.
457 * Fixed two bugs in cyl/plane collision test.
461 * New Rotoide - Prismatic joint type
462 * dJointGetUniversalAngles for efficient angle retrieval.
466 * Integrated plane2d joint type which constrains bodies to z == 0.
470 * Added heightfield primitive collision code. Simple test available in
471 ode/test/test_heightfield
475 * Added Convex primitive collision code,
476 currently only convex-sphere and convex-plane work
480 * Added program to test trimesh vs sphere: ode/test/test_basket
484 * Added new autogenerated Visual Studio projects, with Premake scripts
488 * Added plane/cyl intersection test
489 * Renamed CCylinder to Capsule
493 * Added support for geom offsets.
497 * Removed LIBTOOL from autotools since it was not really required.
498 * Added a target to build ODE as a shared library, this shared
499 library gets build alongside the static one, no flags required.
503 (Backported patches from STABLE branch, applied by Adam)
505 * dRandInt changed for a non-double all-int version.
506 * mics minor fixes and improvements.
510 * Fixed segmentation fault with OPCODE on 64 bits systems.
514 * Fixed timer.cpp compiler error on x86-64 using GCC.
518 * Added trimesh preprocessing to mark unneeded edges and verts. Also
519 added support for preprocessed info to the ccylinder-trimesh
524 * Important AMotors bugfix
528 * Assorted small bugfixes and tweaks for
529 trimesh_{box,ccylinder,trimesh} collisions
533 * added functions to joint.cpp to allow joint attachment to moving
536 * added malloc-based memory allocation in step.cpp & lcp.cpp (turned
537 on with a #define switch in common.h)
541 * added joint feedback to the QuickStep solver
545 * added warm starting to the QuickStep solver
549 * added the QuickStep solver
551 * added contact parameter functions.
555 * use dRandInt instead of rand() in stepfast.
559 * added auto-disable support from Aras Pranckevicius (with
560 modifications by russ). this useful feature can speed up
561 simulation significantly in some cases.
563 * various internal tidyups.
567 * changed the meaning of the 'index' argument to dJointGetBody():
568 it was the only remaining API function that does not respect
569 dJOINT_REVERSE (spotted by Matthew D. Hancher).
571 * updated the C++ headers: fixed two minor bugs and added
572 support for dQuadTreeSpace, dRay, and the dGeom::getSpace() method
573 (from Matthew D. Hancher).
577 * changed the way that the dInfinity constant is implemented: now it
578 is #defined to be one of: FLT_MAX, DBL_MAX, HUGE_VAL, HUGE_VALF, or
579 a large numeric constant. previously it was a variable that was
580 exported from the library. this simplifies the configuration and
581 build process quite a bit, especially in the case of DLLs.
583 * removed the old, deprecated collision system (geom.cpp,space.cpp,
584 geom.h,space.h,odecpp_old_collision.h). the ODE_OLD_COLLISION
585 configuration setting no longer has any meaning.
587 * removed support for dGeomGroups, which have been deprecated for
588 a while and are equivalent to 'spaces' anyway.
592 * bug fix in dMassSetCappedCylinder(), from Matthew D. Hancher.
596 * added trimesh-CCylinder capability, from Vadim Macagon
597 <vadim_mcagon@hotmail.com>.
601 * yet another rewrite of triangle-box collision code, this
602 time based on code donated by Croteam, ported by asko@jetti.org
603 and tweaked by Erwin.
607 * merged trimesh-trimesh collision code by
608 Jeffrey Smith <jeffreys@Softimage.com>.
610 * changed it to not break the trimesh interface, fix
611 some GCC compilation problems, bring it up to date with
612 ODE changes from 2003-11-15 -> 2004-04-04.
614 * add ability to drop meshes on meshes in test_moving_trimesh,
615 not as good as it could be but it's illustrative.
619 * implement a bunch of ultra-simple TriMesh functions that were
620 in the headers but not in the code -- patch by
621 Vadim Macagon <vadim_mcagon@hotmail.com>
623 * disable temporal coherence on trimeshes by default, since
624 it has scaleability issues that don't make it a general clear win.
628 * implement dxHashSpace::collide2(), not particularly efficiently.
632 * applied several Trimesh fixes and improvements from
633 Aras Pranckevicius <nearaz@interamotion.com>
637 * apply Nguyen Binh's work for removing many dSetZero() calls
638 and some other extraneous initializations.
642 * added dJointAdd*Torque/Force().
646 * added the StepFast code, by David Whittaker.
650 * added dMassSet*Total().
654 * added joint limits and motors to universal joints.
656 * reversed the polarity of the dJOINT_REVERSE flag.
660 * added the TriMesh geom class and the quad tree space to the ODE
661 core. both of these were developed by Erwin de Vries. added OPCODE
662 to the ODE distribution, this is required by TriMesh.
666 * added dGeomSetQuaternion() and dGeomGetQuaternion()
668 * added dJointGet*Anchor2()
672 * added dGeomGetSpace().
676 * added dMassSetCylinder().
680 * added dAreConnectedExcluding().
684 * added the ray geom class.
686 * added the dGeomXXXPointDepth() functions.
688 * added a collision test infrastructure, and some more tests.
692 * added support for multiple box-box contacts.
696 * added new collision system. select between the old/new system by
697 setting the ODE_OLD_COLLISION variable in config/user-settings.
701 * fixed two problems in the LCP code to improve the reliability of
702 the dContactApprox1 contact mode.
704 * added a FAQ question about rolling bodies getting stuck when they
709 * added dClosestLineSegmentPoints().
710 * implemented dCollideCB().
714 * added dJointSetFeedback() and dJointGetFeedback().
718 * added dGeomTransformSetInfo() and dGeomTransformGetInfo().
722 * added dBodySetForce(), dBodySetTorque(), dWorldImpulseToForce(),
723 dBodyGetPosRelPoint(), dBodyGetPosRelPoint(), dBodyVectorToWorld(),
724 dBodyVectorFromWorld().
726 * added dBodyGetPointVel() (thanks to Colin Reed).
728 * added a new C++ interface (from Martin C. Martin, with modifications
729 by russ). the old C++ interface is now in odecpp_old.h.
733 * added an additional BSD-style licensing option for ODE.
737 * added dCloseODE(), contributed by Nate Waddoups and David McClurg.
741 * added dSpaceQuery(), contributed by Nate Waddoups.
745 * added a section to the documentation for universal joints.
746 this includes a picture of the joint.
750 * added a universal joint class (generously contributed by
751 Martin C. Martin). it doesn't (yet) have a motor or joint limits,
752 but it does come with tests.
756 * makefile changes to accomodate OSs with command line length
757 limitations (thanks to Norman Lin).
761 * added the dBodySetGravityMode() and dBodyGetGravityMode()
762 functions, which change the dxBodyNoGravity body flag.
764 * added support for building a DLL with MSVC - there is now a
765 msvc-dll target. thanks to Norman Lin for doing this.
769 * added the dParamCFM joint parameter.
773 * reworked the build system to make it more cross-platform.
774 there is now a single top-level makefile and a configurator.c
775 program. see the INSTALL file for details.
779 * the "angular motor" joint has been completed, and a new section
780 has been added to the documentation.
784 * added a new joint type: "angular motor". using this joint is a good
785 way to get ball-joint motors and limits. this is work in progress -
786 it has not been fully implemented or tested yet.
790 * replaced the mmap()-based joint group stack (stack.cpp) with a
791 malloc()-based arena stack (obstack.cpp). this will be more
792 portable and should not impact performance.
796 * changed the meaning of the 'flags' parameter to dCollide() and
797 related functions: now the size of the contact buffer is kept in
798 the lower 16 bits. this change will be backward compatible.
800 * added dBodyGetFiniteRotationMode() and dBodyGetFiniteRotationAxis().
802 * added dBodyAddForceAtRelPos() function.
806 * added the ability to manually enable and disable bodies.
807 see dBodyEnable(), dBodyDisable(), dBodyIsEnabled().
809 * fixed a potential bug: when a world is destroyed that contains
810 joints in joint groups, those joints are marked as "deactivated" in
811 the joint group, so when the joint group is destroyed they can be
814 * the test_boxstack demo has new options to enable and disable bodies.
816 * new configuration parameter in config.h: dEFFICIENT_SIZE.
820 * started the change log for ODE. changes older than today were added
821 to this file by inspecting the CVS logs.
825 * added REAL() constructions for floating point numbers, to prevent
826 many warnings when compiling under VC++.
830 * added geometry transform class, documented composite objects.
832 * added collision rule: no contacts if both geoms on the same body.
833 this is not the best rule, may have to remove this in the future.
835 * new dMassAdd() function.
837 * capped cylinder to capped cylinder collision function.
841 * increase CFM in some demos to make them more robust.
845 * added new accessor functions.
849 * added the dJOINT_TWOBODIES flag to the joint, that says it can not
850 be attached to just one body.
854 * fixed a collision bug in dCollide() that was causing memory
855 corruption when multiple contacts were being returned.
859 * joints can now return m=0 to be "inactive". added a "null" joint
864 * in the LCP solver, try to fail gracefully when s <= 0.
866 * dAABBTestFn() API change.
870 * fixed a contact swapping bug in dCollide().
874 * added capped cylinder geometry object.
878 * the test_buggy demo now uses geometry groups.
880 * added a dAABBTestFn field in the geometry classes.
884 * added geometry groups.
888 * added finite rotation stuff.