Unable to assign rest_position to MO in SofaPython3 plugin in Debug mode

[jjcasmar]

I have compiled SOFA and SofaPython3 plugni in debug mode. In this scenario, I try to assign a numpy vector to the rest position of a mechanical object, but it fails. This is the python code I am executing:

    xNObject = coarseObject.addChild("xN")
    xN_mo = xNObject.addObject("MechanicalObject", template="Vec1", name="xN_MO")
    xN_mo.rest_position = np.array([[0,0.25,0.75]]).T

and this is the error I am getting:

[ERROR]   [vector] in vector<Vec<1, double>> 5555571952d0 size 0 : invalid index 0

I understand my MO has no size when created and therefore, assigning a numpy vector to the rest position triggers the error. How should I do this correctly? I have tried calling xN_mo.size = 3 but that also fails.

[Hugo]

Hi @jjcasmar

Have you tried to define a value of your dof in the MechanicalObject (field position)?
It should initialize the rest_position field.

Best

Hugo

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