Search found 10 matches

by priest_wd
Sun Feb 06, 2011 2:34 am
Forum: General Bullet Physics Support and Feedback
Topic: How to solve the problem that the constraint is too elastic
Replies: 4
Views: 5426

Re: How to solve the problem that the constraint is too elas

Hi xiaoQ0903! Have you tried using btUniversalConstraint or btGeneric6DofSpringConstraint? The first one (btUniversalConstraint) have only 2 degrees of freedom. http://www.bulletphysics.com/Bullet/BulletFull/classbtUniversalConstraint.html I haven't use it yet, but maybe works better than other cons...
by priest_wd
Thu Nov 25, 2010 1:22 am
Forum: General Bullet Physics Support and Feedback
Topic: best way to change the length of a rope
Replies: 9
Views: 10861

Re: best way to change the length of a rope

Hi! Check this topic: http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?p=&f=9&t=3402 I tried modifying parameters for the softness/rigidness (m_ERP and m_limitSoftness attributes) in the getRotationalLimitMotor() method from a btGeneric6DofConstraint object as one of the guys said. I...
by priest_wd
Mon Nov 08, 2010 2:57 am
Forum: General Bullet Physics Support and Feedback
Topic: best way to change the length of a rope
Replies: 9
Views: 10861

Re: best way to change the length of a rope

Hi.

Well, when I played with the examples, I noticed that avoiding the use of "setCollisionFlags" or "setActivationState" (I dont remember wich one) when creating the rigidbody, it seems to solve the problem. Tell me if it works

Greetings!
by priest_wd
Wed Oct 27, 2010 2:29 pm
Forum: General Bullet Physics Support and Feedback
Topic: Glut32.dll is missing
Replies: 4
Views: 7845

Re: Glut32.dll is missing

Well.... I dont think so... I'm using Visual Express 2008 in Windows 7 64-bit and the Box2dDemo works fine. You can also take a look in the "CMakeLists.txt" file, to see what's going on when Visual build the app.

Greetings!
by priest_wd
Wed Oct 27, 2010 1:22 am
Forum: General Bullet Physics Support and Feedback
Topic: best way to change the length of a rope
Replies: 9
Views: 10861

Re: best way to change the length of a rope

Hello!

I used a generic6dof joint and it works fine! Many thanks!
by priest_wd
Wed Oct 27, 2010 1:14 am
Forum: General Bullet Physics Support and Feedback
Topic: Glut32.dll is missing
Replies: 4
Views: 7845

Re: Glut32.dll is missing

Hello

Have you tried copying glut32.dll from other Demo folder to Box2dDemo or Debug folder?

Greetings
by priest_wd
Wed Oct 27, 2010 1:06 am
Forum: General Bullet Physics Support and Feedback
Topic: Best way for 'end user' to learn Bullet?
Replies: 1
Views: 13367

Re: Best way for 'end user' to learn Bullet?

Hi lemond You posted several months ago, maybe you already have an answer but I hope to be usefull to anyone who gets here :D. Well, I started with Bullet some time ago, and so far, the Demos of bullet that comes with the installation package are very usefull. But it takes some work to extract the l...
by priest_wd
Sun Oct 10, 2010 8:46 pm
Forum: General Bullet Physics Support and Feedback
Topic: bullet ropes with 3D objects
Replies: 0
Views: 1747

bullet ropes with 3D objects

hi everyone!

Does somebody know how to attach 3D models to each node of a rope? What i want is to make it visible under OpenSceneGraph (OSG).

Greetings
by priest_wd
Sun Oct 10, 2010 3:58 pm
Forum: Research and development discussion about Collision Detection and Physics Simulation
Topic: spring between 2 rigid bodies
Replies: 1
Views: 2970

Re: spring between 2 rigid bodies

Hi Michel

I think you have to set the transform of your moving sphere like this

transform.setOrigin(btVector3(5., 0, 0.))

looks like both objects were in the same coordinates

Greetings
by priest_wd
Wed Sep 22, 2010 4:20 pm
Forum: General Bullet Physics Support and Feedback
Topic: best way to change the length of a rope
Replies: 9
Views: 10861

Re: best way to change the length of a rope

hello Michael I have the same problem. I'm trying to build a "ship to shore gantry crane simulator", so I need the rope to be attached to my cockpit and to the spreader in the other side. But I can't figure out how to change the length of the rope either. What I did was to create a rope wi...