[SOLVED] Attaching a vec3D object to a rigid 3D

[Madani]

I am designign a scene in which I need to attach a deformable object (a deformable spring) of the kind vec3d to a rigid body (a plate connected to spring top) of the kind rigid3d but there is no constraint I can use for both objects.any idea on how to manipulate the programm and do what I want?

[Matthieu Nesme]

Hi,

the most efficient is to use subsetmultimappings.
Warning, multimappings cannot be cleanly created in an xml scene.

Your exact situation is in several examples:
c++ scene: tutorial/compositeObject
python scene: SofaPython/compositeObject.py

Otherwise you can always use regular hard, bilateral constraints.

– Matthieu

[Froy]

Hello,

Indeed you cannot put constraints on objects with different types directly.
But you can achieve that anyway by using the RigidMapping on a intermediate object templated on Vec3d. And then you can attach the two vec3d model using AttachConstraint for example ; or setting a stiff spring between.
In summary: [Plate: Rigid] <- RigidMapping -> [Intermediate Vec3d] <- AttachConstraint -> [SpringObject: Vec3d]

[Guillaume]

Hi Madani,

Since you didn’t answer back to this topic, I assume your problem is solved.
Please do not hesitate to answer if it’s not.

Regards,
Guillaume.

[Author]

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