[all] Access constraints' index

[EulalieCoevoet]

No description provided.

[alxbilger]

From what I understand, you now use a variable from BaseConstraintSet to store the id, instead of using a class-specific data member. It looks like it's the good thing to do, but I am surprised that this Data is not used at all in SOFA.

[EulalieCoevoet]

I understand, but yes I think this index is only used by the constraints.
Most Lagrangian constraints in SOFA do not use this data, instead they redefine a local variable to store the constraint index. That's why I missed it when I implemented the plugin. But now, I was looking to make this index accessible for the user, and finally came across this data.

[alxbilger]

Ok, in this case, should all constraints use the same base class Data? If yes, could you review that PR so it can be applied widely? Thanks