PointsFromIndices.scn

<?xml version="1.0" ?>
<Node name="root" gravity="0 -9 1" dt="0.05">
    <RequiredPlugin name="Sofa.Component.Constraint.Projective"/> <!-- Needed to use components [FixedProjectiveConstraint] -->
    <RequiredPlugin name="Sofa.Component.Engine.Select"/> <!-- Needed to use components [BoxROI PointsFromIndices] -->
    <RequiredPlugin name="Sofa.Component.IO.Mesh"/> <!-- Needed to use components [MeshGmshLoader] -->
    <RequiredPlugin name="Sofa.Component.LinearSolver.Iterative"/> <!-- Needed to use components [CGLinearSolver] -->
    <RequiredPlugin name="Sofa.Component.Mass"/> <!-- Needed to use components [DiagonalMass] -->
    <RequiredPlugin name="Sofa.Component.ODESolver.Backward"/> <!-- Needed to use components [EulerImplicitSolver] -->
    <RequiredPlugin name="Sofa.Component.SolidMechanics.FEM.Elastic"/> <!-- Needed to use components [TriangularFEMForceField] -->
    <RequiredPlugin name="Sofa.Component.SolidMechanics.Spring"/> <!-- Needed to use components [TriangularBendingSprings] -->
    <RequiredPlugin name="Sofa.Component.StateContainer"/> <!-- Needed to use components [MechanicalObject] -->
    <RequiredPlugin name="Sofa.Component.Topology.Container.Dynamic"/> <!-- Needed to use components [TriangleSetGeometryAlgorithms TriangleSetTopologyContainer TriangleSetTopologyModifier] -->
    <RequiredPlugin name="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
    <VisualStyle displayFlags="showForceFields" />
    <DefaultAnimationLoop/>

    <Node name="SquareGravity" gravity="0 -9.81 0">
        <EulerImplicitSolver name="cg_odesolver" printLog="false"  rayleighStiffness="0.1" rayleighMass="0.1" />
        <CGLinearSolver iterations="25" name="linear solver" tolerance="1.0e-9" threshold="1.0e-9" />
        <MeshGmshLoader name="loader" filename="mesh/square3.msh" createSubelements="true"/>
        <MechanicalObject src="@loader" template="Vec3" name="mecaObj" scale3d="10 10 10" restScale="1" />
        <TriangleSetTopologyContainer src="@loader" name="Container" />
        <TriangleSetTopologyModifier name="Modifier" />
        <TriangleSetGeometryAlgorithms template="Vec3" name="GeomAlgo" />
        <DiagonalMass name="default5" massDensity="0.15" />
        <BoxROI template="Vec3" name="FixedROI" box="2 9.5 -0.5 8 10.5 0.5" drawBoxes="1" position="@mecaObj.rest_position" computeTriangles="0" computeTetrahedra="0" computeEdges="0" />
        <FixedProjectiveConstraint template="Vec3" name="default6" indices="@FixedROI.indices" />
        <TriangularFEMForceField template="Vec3" name="FEM" method="large" poissonRatio="0.3" youngModulus="60" />
        <TriangularBendingSprings template="Vec3" name="FEM-Bend" stiffness="300" damping="1" />

        <PointsFromIndices name="PFI" position="@mecaObj.position" indices="10 20 30" />

        <Node name="Selection" >
            <MechanicalObject template="Vec3" position="@../PFI.indices_position" name="SelectedDOFs" showIndices="1" showIndicesScale="0.2"  />
        </Node>

    </Node>
</Node>