[SOLVED] How to achieve respiratory motion?

[Times]

Hello @Hugo,
As discussed, I was hoping to create some respiratory motion for my simulation and I was wondering how I could achieve this? Thanks

[Hugo]

Hey @akthetimes

Thanks for posting it on the forum.
The way I would recreate a desired motion of an object would be to implement this change of position (dofs) as a controller, whether a python or a C++ one, which would overwrite the new positions of your object at each time step.

For oscillatory motion, we also have a projective constraint (similar to what I wrote just previously, projecting at the end of the time step the new positions) named: OscillatorConstraint.

Would this suit you?
Is a whole object moving or would you like just to impose an oscillatory motion of a part of an object?

Best,

Hugo

[Times]

@Hugo Thank you! The OscillatorConstraint does the job, I think I would like to later implement this as a controller. In my case, the whole object is moving, is there a way I can achieve this too? Thanks 🙂

[Hugo]

Hey @akthetimes

Great that OscillatorConstraint does the job!
Regarding a later implementation as a controller, all you would need in your controller is a link to the MechanicalObject of your object so that you can write in it the new position at each time step.

The MechanicalStateController (C++ class in SOFA) could be worth looking at.

Best wishes,

Hugo

—

NOTE: we are now moving the forum to GitHub Discussions. Do not hesitate to start using it already!
More information on the migration process can be found online.

[Times]

Hey @Hugo,
Thanks!

Regarding the forum migration, interesting move. Does this mean that in the future, users will be unable to ask questions on the SOFA Forum?

[Hugo]

Hey @akthetimes

Correct. Starting from this week:
– new registration on the Forum will be prevented and redirected towards GitHub Discussions
– Users will not be able to create new topics
– All admin replies will include the footer your noticed

The issue #2591 has been opened for you to follow the migration process.

Any feedback is most welcome.
Best wishes,

Hugo

—

NOTE: we are now moving the forum to GitHub Discussions. Do not hesitate to start using it already!
More information on the migration process can be found online.

[Times]

I see. For what it’s worth, I think it’s a good move

[Author]

Posts