Search found 5 matches

by mepster
Mon Jul 23, 2012 4:46 pm
Forum: Applications, Games, Demos or Movies using Bullet
Topic: Flight Simulator using Bullet
Replies: 8
Views: 19902

Re: Flight Simulator using Bullet

Great simulator. Source code (just of the flight dynamics / Bullet integration part) would be very useful to people! :-) Think about it anyway...
by mepster
Fri Feb 10, 2012 7:41 pm
Forum: General Bullet Physics Support and Feedback
Topic: computing work done by a btGeneric6DofConstraint?
Replies: 4
Views: 5521

Re: computing work done by a btGeneric6DofConstraint?

Sensors and effectors, yeah... thanks! Bullet is very good for evolutionary robotics. Wonder if anyone else has some tips on computing the total work done by a rotational motor. I set the m_targetVelocity of the rotational motor, and at some point this gets converted to a torque, can anyone explain ...
by mepster
Wed Feb 08, 2012 6:47 pm
Forum: General Bullet Physics Support and Feedback
Topic: computing work done by a btGeneric6DofConstraint?
Replies: 4
Views: 5521

computing work done by a btGeneric6DofConstraint?

I'm trying to compute the total work done by a btGeneric6DofConstraint in the last timestep. Has anyone figured out how to do this? I am using Bullet to evolve neural controllers for simulated robots. The robot legs are powered by btGeneric6DofConstraint joints (I'm only using the btRotationalLimitM...
by mepster
Fri Feb 04, 2011 1:14 am
Forum: General Bullet Physics Support and Feedback
Topic: Motor doesn't wake up rigid body
Replies: 6
Views: 9754

Re: Motor doesn't wake up rigid body

I think there is some low threshold, if the m_targetVelocity is too low, no impulse at all is applied. If I scale up the m_targetVelocity high enough, all legs move properly; if I scale it down enough, all legs go limp as in my previous post. Somewhere in the middle, some legs work & some go lim...
by mepster
Fri Feb 04, 2011 12:15 am
Forum: General Bullet Physics Support and Feedback
Topic: Motor doesn't wake up rigid body
Replies: 6
Views: 9754

Re: Motor doesn't wake up rigid body

I think I am getting this same thing too. I am using the "TestRig" modified from one of the bullet demos. The one called AppMotorDemo (in Xcode) or "Dynamic Control Demo" (in the glut menu of all the different demos). The original demo uses a btHingeConstraint on each joint of ea...