Real-Time Physics Simulation Forum

I'm having the same problem. The method that note173 suggested is probably the most accurate but you could also do this: //define somewhere relevant: btScalar actualLowerLimit = -0.5; btScalar actualUpperLimit = 0.5; btScalar epsilon = 0.01; if (up) { pBoomHinge->setLimit(actualLowerLimit,actualUppe...

I am implementing a physics-interface for a simulation framework and have run into a problem that I am not sure how to fix. The Problem: Seemingly random impulses to the rigid bodies and over time btHingeConstraints that veer of their current position, although they have and active motor with 0 velo...

Sorry for necroing this thread but I thought that this would fit nicely in here. So, I know that for the translation of objects a btCompoundShape has been recommended in multiple threads. btCompoundShape may have a negligible overhead if you wrap a single complex shape into it but using it to offset...

I checked out the newest SVN and saw that the problem still exists so I filed a bug-report and attached a patch to fix it:

http://code.google.com/p/bullet/issues/detail?id=564

found the problem. btAlignedObjectArray<T> is missing an assignment operator. The implicit one doesn't cut it since one of its members is T* and the pointer get simply copied with the assignment. so btConvexHullShape hull; //default constructor called hull = btConvexHullShape(Vtx,VtxCount,3*sizeof(b...

well that's worth a bug report. The default copy constructor seems to fail here or the allocator. As you can see it actually shares one pointer to the data if you copy it. I'm going to try to narrow it down but ironically you can circumvent this by just using new to allocate the btConvexHullShape ht...

well like the name suggests this is a scaling factor for the debug draw size. So if you have DBG_DrawConstraints enabled on your debug drawer it draws a representation of the constraint. It's just that this value doesn't get initialized in most constraints so it stays 0 and you can't see it unless y...

what I mean was that
doesn't undo but does

thanks, that worked alright, except that is has to be:
otherwise the value won't change as long as DISABLE_DEACTIVATION is set.

So, I have a little problem with btHingeConstraint. When I use set enableAngularMotor() or enableMotor() then the rigid bodys that the constraint connects move but after a while they get deactivated and only continue their motion after they get activated by either a collision or a call to activate()...