Local quaternion to Twist and Swing angle?

KxL

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Dec 10, 2008, 9:17:20 AM12/10/08

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Hi,

I am trying to find a way of doing Twist and Swing joint based on Ball
joint with AMotor, but I am finding difficulty to get Twist and Swing
angles to update AMotor. Anyone done it, or know a place to look for
help?

Thank you
Krystian

AB

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Dec 10, 2008, 12:18:51 PM12/10/08

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Hello,

Can´t help you regarding the twist/swing representation for AMotor.

Nevertheless, you could write a spring joint taking a (local or
global) quaternion as an input. Steve has posted an example here:
http://groups.google.com/group/ode-users/browse_thread/thread/9b4c91f2c33abf1b/d8afb83e8fc6a7b7?lnk=gst&q=sinclair#d8afb83e8fc6a7b7

Cheers,
AB

Daniel Price

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Dec 10, 2008, 12:35:17 PM12/10/08

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Are you talking about torsion bars?

KxL

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Dec 12, 2008, 2:12:59 AM12/12/08

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Hi,

On 10 Gru, 18:18, AB <abouen...@gmail.com> wrote:
> Hello,
>
> Can´t help you regarding the twist/swing representation for AMotor.
>
> Nevertheless, you could write a spring joint taking a (local or

> global) quaternion as an input. Steve has posted an example here:http://groups.google.com/group/ode-users/browse_thread/thread/9b4c91f...

Thank you for reply. In fact I have found what I was looking for in:
http://ligwww.epfl.ch/~baerloch/papers/thesis.pdf

Cheers,
Krystian

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