Force direction in a ligament with a wrapping surface

[zahra abbasi]

Hi,
I want to add a wrapping surface or wrapping point in a ligament. How can I do that?
Besides, how can I find the direction of the force in the ligament having a wrapping point or wrapping surface?

Thank you.

[jimmy d]

Hi Zahra,

Wrapping gets handled by GeometryPath(). It is dealt with much like muscles. Doxygen documentation for geometry path can be found here; https://simtk.org/api_docs/opensim/api_ ... yPath.html

There are some plugins developed by the community to get muscle lines of actions; https://simtk.org/home/force_direction

These may help you get the ligament lines of action.

Cheers,
-james

[Mary K]

Hello,
according to the documentation I think we cannot set geometry path points of a muscle through C++ code.

Can someone tell the steps of how we can set the path points? For example through the XML file of the model or using the GUI?

Cheers,
Maria K.

[zahra abbasi]

Hi James,

Thank you for the response.

Best,
Zahra

[jimmy d]

Maria,

Can you point to where the documentation says you can't set geometry paths in C++. That is incorrect. You can set anything in the C++.

-james