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	<title>Real-Time Physics Simulation Forum</title>
	
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	<updated>2007-12-15T04:20:06+00:00</updated>

	<author><name><![CDATA[Real-Time Physics Simulation Forum]]></name></author>
	<id>https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/1783</id>

		<entry>
		<author><name><![CDATA[Erwin Coumans]]></name></author>
		<updated>2007-12-15T04:20:06+00:00</updated>

		<published>2007-12-15T04:20:06+00:00</published>
		<id>https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=6728#p6728</id>
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		<title type="html"><![CDATA[Bullet 2.66 released: improved Convex Sweep &amp; Ray Cast]]></title>

		
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<a href="http://sourceforge.net/project/showfiles.php?group_id=147573" class="postlink">Bullet 2.66</a> is released. Below is the change log. Some promised features like a character controller and collision filtering demo didn't make it, so it will go in the next release.<br><br>Enjoy,<br>Erwin<br><br>2007 Dec 16<br>        - Added btRigidBodyConstructionInfo, to make it easier to set individual setting (and leave other untouched) during rigid body construction.<br>        Thanks Vangelis Kokkevis for pointing this out.<br>        - Fixed memoryleak in the ConstraintDemo and Raytracer demo.<br>        - Fixed issue with clearing forces/gravity at the end of the stepSimulation, instead of during internalSingleStepSimulation.<br>        Thanks chunky for pointing this out: <a href="http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&amp;t=1780" class="postlink">http://www.bulletphysics.com/Bullet/php ... f=9&amp;t=1780</a><br>        - Disabled additional damping in rigid body by default, but enable it in most demos. Set btRigidBodyConstructionInfo m_additionalDamping to true to enable this.<br>        - Removed obsolete QUICKPROF BEGIN/END_PROFILE, and enabled BT_PROFILE. Profiling is enabled by default (see Bullet/Demos/OpenGL/DemoApplication.cpp how to use this).<br>        User can switch off profiling by enabling define BT_NO_PROFILE in Bullet/src/btQuickprof.h.<br><br><br>2007 Dec 14<br>- Added Hello World and BulletMultiThreaded demos<br>- Add portable version of BulletMultiThreaded, through SequentialThreadSupport (non-parallel but sharing the same code-path)<br>- Add Cmake support for AllBulletDemos<br><br><br>2007 Dec 11<br>- Moved the 'btRigidBody::clearForce' to the end of the stepSimulation, instead of in each substep.<br>See discussion <a href="http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&amp;t=1601" class="postlink">http://www.bulletphysics.com/Bullet/php ... f=9&amp;t=1601</a><br>- Added btConvexPlaneCollisionAlgorithm, makes planes perform better, and prevents tunneling<br>Thanks Andy O'Neil for reporting the performance/functionality issue<br>- Fixes for IBM Cell SDK 3.0<br>Thanks to Jochen Roth for the patch.<br><br>2007 Dec 10<br>- Fixes in btHeightfieldTerrainShape<br>Thanks to Jay Lee for the patch.<br><br>2007Dec 9<br>- Only update aabb of active objects<br>Thanks Peter Tchernev for reporting (<a href="http://bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&amp;t=1764" class="postlink">http://bulletphysics.com/Bullet/phpBB3/ ... f=9&amp;t=1764</a> )<br>- Added workaround to compile libxml under Visual Studio 2008 Beta 2<br>- Make glui compile under MSVC 9.0 beta (vsnprintf is already defined)<br><br>2007 Dec 6<br>- Added DynamicControlDemo, showing dynamic control through constraint motors<br>Thanks to Eddy Boxerman<br>- Add support for generic concave shapes for convex cast.<br>- Added convex cast query to collision world.<br>- Added workaround for OpenGL bug in Mac OS X 10.5.0 (Leopard)<br>- Added concave raycast demo<br>All above thanks to John McCutchan (JMC)<br>- Fixed issues that prevent Linux version to compile. <br>Thanks to Enrico for reporting and patch, see<br>- Fixed misleading name 'numTriangleIndices' into 'numTriangles'<br>Thanks Sean Tasker for reporting:<br><br>2007 Nov 28:<br>- Added raycast against trianglemesh. Will be extended to object cast soon.<br>Thanks John McCutchan (JMC)<br>- make getNumPoints const correct, add const getPoints(). <br>Thanks Dirk Gregorius<br>- Bugfix: allow btCollisionObjects (non-btRigidBody) to interact properly with btRigidBody for cache-friendly btSequentialImpulseConstraintSolver.<br>Thanks Andy O'Neil for pointing this out.<br>- Bugfix: don't fail if spheres have identical center, use arbitrary separating normal (1,0,0)<br>Thanks Sean Tasker for reporting! <a href="http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&amp;t=1681" class="postlink">http://www.bulletphysics.com/Bullet/php ... f=9&amp;t=1681</a><br><br><br>2007, November 20<br>- Added hierarchical profiling<br>- Fixed memory leak in btMultiSapBroadphase,<br>- Fixed hash function (typo, should use 2 proxies)<br>Thanks to Stephen (shatcher) for reporting and fixes! <a href="http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&amp;t=1696" class="postlink">http://www.bulletphysics.com/Bullet/php ... f=9&amp;t=1696</a><br><br>2007 Nov 11<br>- Fixed parallel solver (BulletMultiThreaded) friction issue<br>- Terminate Win32 Threads when closing the CcdPhysicsDemo (when USE_PARALLEL_SOLVER/USE_PARALLEL_DISPATCHER is defined)<p>Statistics: Posted by <a href="https://pybullet.org/Bullet/phpBB3/memberlist.php?mode=viewprofile&amp;u=2">Erwin Coumans</a> — Sat Dec 15, 2007 4:20 am</p><hr />
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