A place to discuss everything related to Newton Dynamics.
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by greg2fs » Sun Apr 19, 2009 1:21 pm
Hello I need a joint like a ball and socket allowing a cone limit and for the fird rotation a stop alpha.
Does this joint exists or how can I build one ?
Thanks
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greg2fs
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by JoeWright » Sun Apr 19, 2009 1:54 pm
It doesn't exist yet and is really hard to build. Its on Julio's list of things to do I hope.
As a temporary measure you may have luck fudging it with multiple hinge joints.
Joe
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JoeWright
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by greg2fs » Sun Apr 19, 2009 3:01 pm
ok then I must use an intermediate body, right ?
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greg2fs
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by JoeWright » Mon Apr 20, 2009 5:58 pm
Yes, that's what I've done for the moment. Works quite well for me, hopefully you can find an interpretation that works for you. I used small masses for my intermediate bodies.
Joe
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JoeWright
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by greg2fs » Tue Apr 21, 2009 12:34 pm
OK, I have done that. Is it possible to add resistance (damping) inside a joint ?
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greg2fs
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by JoeWright » Tue Apr 21, 2009 2:34 pm
Yes... I can't remember the functions right now. Something like NewtonSetMinimumRowFriction and the maximum counterpart
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JoeWright
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by greg2fs » Wed Apr 22, 2009 12:38 am
It seems to be only for userjoints. Maybe I can add a torque proportionnal to the angular speed between the 2 bodies linked by a joint to have the same effect ?
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greg2fs
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by JoeWright » Wed Apr 22, 2009 5:33 am
Use the custom joint version of the hinge rather than the older built in version.
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JoeWright
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by greg2fs » Wed Apr 22, 2009 11:03 am
It's a harder work I use to use custom joints only for special thing I think to make a hinge with custom joint I suppose I'll have to store the original relative orientation and position between the two bodies, calculate the rotation errors etc... Is that correct ?
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greg2fs
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by JoeWright » Thu Apr 23, 2009 6:13 pm
Just use Julio's code in the custom joint folder. Also, I did make a post about this joint somewhere where I talked about limits and motorised versions. Perhaps look at my profile for my list of posts.
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JoeWright
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by greg2fs » Fri Apr 24, 2009 9:25 am
Yes I saw these classes, right now I'll try to keep the classic hinge joint.
Thanks
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greg2fs
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