Hugo

Hi @pasquale94

You can add Rayleigh damping which will mimic damping, i.e. viscosity based on Mass and Stiffness matrices.
You can also see :
– UniformVelocityDampingForceField
– and DiagonalVelocityDampingForceField

Do you have an idea of damping model you would be looking for?
Best wishes,

Hugo

Dear @newbie

the SofaCV plugin is a private plugin. It is therefore hard for us to help. Does your plugin have an explicit dependency on SofaCore in the CMakeLists.txt (in target_link_libraries)? Does your code include DataFileName as well?

Best,

Hugo

If it is not a blocking point, it is fine for me: this plugin being a private plugin I can not access it and help you debugging it.

I would bet for a CMakeLists.txt issue. If you want to investigate the fix, you can get inspired for other CMakeLists.txt as in Cosserat plugin for instance. If not, I let you close the topic.

Best wishes.

Hugo

Hi @amazier

It works on my side:

I just made a PR #1830 for updating the plugin and a README to guide you.
Let me know if it helps.

Best

Hugo

Hey @anoush

I think I replied about this question here.
Is this correct?
If so, please do not hesitate to close this topic.

Best

Hugo

Hi @twxu

Using the GenericConstraintSolver, you can activate the “computeConstaintForces” boolean. This fills the nodal data field “constraintForces”: this vector will have the size of the constraints, i.e. contacts.

Let me know it this helps.

Best wishes,

Hugo

Hi @sergeinikolaev

It seems your computation is diverging, isn’t it Sergei?

You are printing the position (DOFs) which clearly seems to undergo a problem.
Could you print before and after you access it to check that the script is not the problem source?

Without seeing more of your scene, it is complicated to guess.

Best

Hugo

Hi @twxu

Indeed, on your image “example2.PNG” or “exampleContactLines.PNG”, the number of contact points seems huge several hundreds maybe thousands of them. It is a lot! Really a lot!

The solution would be to definitely coarsen your collision model.

Best,

Hugo

Hi @timp

NaN could explain it or wrong pointer, but it is weird.
Could you please share with me the full scene (in PM if you prefer) so that I can investigate this?

An usual way to investigate would be to compile in debug and see the trace.

Best,

Hugo

Hi @eaparra

Thank you for your question and thank you for providing the scene files, it helps a lot!

In mechanics, the cantilever beam is a well-known example. Usually, the mass at the end is modeled as a force (F = mg) applied at the extremity of the beam. Do you really need to model the full mass object at the extremity or a force would do…[Read more]

Hey @mckysd5

Even if slow, is the collision well responding?
How many contacts can you see (activate the view option “Interactions”)?

Are your object in collision at the beginning of the simulation?
This must not be the case (in any simulation software).

Are your meshes clean? (no duplicated faces)

Are your collision settings (alarmContact /…[Read more]

Hey @olumide

Note that for each animation loop the graph traversal and its order are different. This is why this path the visitors is only described in the animation loop component pages (e.g. DefaultAnimationLoop see the flow diagram).

Non-linear FEA (involving non-linear materials as SOFA does) is always brought back to a linearized system to…[Read more]

Hi @amazier

Did you well compiled the plugin using GCC ?

Best

Hugo

Hey @anoushs

Have you noticed that with BoxROI you can define both the “box” data field or the “orientedBox” data field?
This should do the job as you expect.

Best

Hugo

Hey @jonny

Let’s ask @GuillaumeParan our release expert. Do you have any idea Guillaume? Maybe related to the changes to be backported?

Best,

Hugo

Hi @andrija987 @pasquale94

Thank you for your feedback.
@andrija987, right ! GH discussions could help a bit for the forum management with new features, but more importantly: it would better (and quicker) connect the community and, as you stated, it would foster the emergence of novel ideas (future implementations).

We are currently increasing…[Read more]

Hey @nguyenvanpho

Have you installed pybind11 as requested in the doc?
Best

Hugo

Let me notice @olivier-goury author of the code 😉

Hugo

AttachConstraint is a projective constraint.

Further to your request, I just wrote this doc page (the visual bug in the doc will soon be fixed).

I hope this helps.
Best

Hugo