Francois

Hi @hugo,

I saw that that the documentation improved a lot over the last few months. Thanks for all the work on this!

So far I made a discrete collision detection algorithm based on spatial subdivision that works well with the correct numerical settings (time step, alarm and contact distance). Now, I’m trying to adapt it to handle continuous…[Read more]

Hi @hugo,

Sorry for the late reply. It looks like I don’t receive emails anymore when my messages are answered.

I made some progress in the last few weeks. I understood some things about how the freeAnimationLoop and the free positions work. I’m using the freeAnimationLoop with the LCPConstraintSolver. However, I don’t fully understand the math…[Read more]

Hi Hugo,

Thanks for the reply. I added the relevant classes in https://github.com/FrancoisLeonard/SOFA_Custom_CollisionModels. There’s also a scene and its output in output.txt.

I’m mostly interested in solving the error:
[ERROR] [DefaultContactManager(collision response)] Contact default between ScytherPointCollisionModel and…[Read more]

Hi Hugo,

I will try again with LocalMinDistance.

For the rest_position, I was referring to your previous suggestion to impose the displacement on the rest_position and to add a RestShapeSpringForceField, rather then using LinearMovementConstraint. With what component can I do that?

Thanks,

François

Hi @hugo,

Sorry for the late reply. Why do you not advise to use DiscreteIntersection? In my scene, many objects are very close to each other. With proximity intersections, I haven’t been able to set the contact distance small enough so that the objects are not in collision from the start and yet have realistic looking collisions.

Also, how can…[Read more]

Hi,

The displacement is only imposed on one object. I don’t understand why the other object doesn’t deform or get pushed by it. I will try the RestShapeSpringForceField to see what it does.

Meanwhile, I’ve put a simplified scene here.

Thank you,

Francois

I tried to build the master branch, but I get several instances of
In file included from /home/franc/sofa/src/SofaGeneral/../modules/SofaDenseSolver/NewMatMatrix.h:29:
/home/franc/sofa/src/modules/SofaDenseSolver/NewMatVector.h:28:10: fatal error:
'newmat/newmatio.h' file not found

I will try to cherry pick all changes in the SofaCUDA…

Hi Hugo,

Thanks for the help. With the commit fixing the issue, the code compiles, but runSofa crashes when starting. Here is the trace:

########## SIG 6 - SIGABRT: usually caused by an abort() or assert() ##########
-> /home/franc/sofa/build/install/bin/../lib/libSofaHelper.so.18.12.00(sofa::helper::BackTrace::dump()+0x20) [0x7f864c6874b0]
->…[Read more]