surface mapping and PartialLinearMovementConstraint in cpp language

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  • 29 June 2020 at 03:13 #16744
    RowingMK2
    Blocked

    Dear Developers,

    Hello, I am the beginner of SOFA.
    Last week, I builded SOFA with cpp and I am using this framework to make my own program.
    I want to use this framework to move specific point of object like
    in this thread. To do this, It seems that ‘surface mapping’ and ‘PartialLinearMovementConstraint’ to be implemented.

    In python, code looks quite simple like below. However, I am not sure how cpp can implement the following code.(Application/Tutorial examples are nor cover this things.)

    Please let me know if there is any document I can refer to it.
    Thanks a lot.

    
Surf = LiverFEM.createChild("Surf")
        self.Surf = Surf
        Surf.gravity = gravity
        Surf.createObject("SphereLoader, name="SphereLoader", filename="mesh/liver.sph")
        Surf.createObject("MechanicalObject", position="@[-1].position", name="mappedMS")
        Surf.createObject("SphereModel", listRadius="@[-2].listRadius", name="CollisionModel")
        Surf.createObject("BarycentricMapping", input="@../dofs", name="sphere mapping", output="@mappedMS")

cT = self.LiverFEM.getTime()
self.LiverFEM.getObject("PartialLinearMovementConstraint").findData("keyTimes").value = [[cT], [cT + 100]]
self.LiverFEM.getObject("PartialLinearMovementConstraint").findData("movements").value = [0.5*math.sin(cT), 0.5*math.cos(cT), 0]
    7 July 2020 at 22:59 #16821
    Hugo
    Keymaster

    Dear @dst03251

    Welcome on the forum and congratulations for your first steps in SOFA.
    To start with SOFA, I would advise the following steps:

    If you prefer we also have training sessions for efficiently start with SOFA.

    In you files you are loading sphere models, usually used for collision.
    I guess you would like to move these spheres in your python script. You should get inspired from the (xml but you can do the same in python) scene : examples/Components/constraint/LinearMovementConstraint.scn

    I hope this helps.
    Best wishes,

    Hugo

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