Real-Time Physics Simulation Forum

I am running Centos 5.2 on my machines here and was wondering if someone packages bullet in rpm format preferable a source rpm. The latest version I can find is for 2.75, which is probably okay but sometimes it would be nice to be up to date.

Thanks in advance

Tony Vasile

When you are only using a collision world and one is managing the position of your vehicles by just updating their associated transforms does the collision detection work out the one vehicle has gone through the other one or is the assumption that the vehicle has just teleported and any possible col...

Yes I am and my broadphase is of class btDbvtBroadphase.

Tony Vasile

I have set up a spherical world with the radius of the sphere the radius of the earth. I am trying to place my vehicles using latitude, longitude and altitude from the surface of the sphere and then drive one into the other to simulate a collision. My vehicles are both potentially moving and I conve...

I have some Level 1 DTED data and I was wondering what shape to use to allow testing for collision with it? Obviously the terrain will be static but I will some dynamic vehicles moving around either in the air or at sea level. I have had a look at btHeightfieldTerrainShape but it seems to only usefu...

Would it be possible to get some example code of converting the DTED data to the appropriate shape to use in Bullet. I have some level 1 data that I want to use for collision detection.

Tony Vasile

When I compile this simple program: //#define BT_USE_DOUBLE_PRECISION #include <btBulletDynamicsCommon.h> #include <btBulletCollisionCommon.h> const int maxNumObjects = 520; btCollisionObject objects[maxNumObjects]; btCollisionWorld* collisionWorld = 0; int main(int, char **) { btVector3 worldAabbMi...

Actually when I revert everything to default (single precision) my program works as expected. So is the new of 116 bytes causing me grief as it isn't on an 8 byte boundary or is that what the macro BT_DECLARE_ALIGNED_ALLOCATOR supposed to handle. I have run valgrind on my executable and the first pr...

I get the same problem if I don't define BT_USE_DOUBLE_PRECISION in my program. If do or I don't define it, the new call is trying to allocate 116 something (bytes I assume). Haven't tried 2.75 and double precision. How do I try that? The program was working with 2.75 and whatever the default precis...

Any thoughts on why I having this problem: The only reason I ask is the when I now try to construct a btAxisSweep3 broadphase I get a "malloc(): memory corruption" message at the line I try to create the broadphase object. The problem is tied in with the macro BT_DECLARE_ALIGNED_ALLOCATOR ...

It looks like the new project just has the moved librarys and a copy of Bullet-2.76. A rather strange way to package something. On another note does the newly built double precision bullet library require application which use it to know about #define BT_USE_DOUBLE_PRECISION ? The only reason I ask ...

So what happened to the Extras directories LibXML, COLLADA_DOM and BullterColladaConverter? I am using osgbBullet to integrate OpenSceneGraph and Bullet and it depends on these libraries to compile.

Tony Vasile

I notice in a previous post that the a #define BT_USE_DOUBLE_PRECISION was to be include in btScalar.h. Is this the right way to get double precision or is there an option from the cmake command line to use? If I only put the #define as above then GlutStuff.h doesn't get this change unless an additi...