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hi everyone, does anyone have used SubsetMultiMapping?
actually,I want to use SubsetMultiMapping to map from a controlling point to the tip of a BeamFEM physical model(guidewire),
but there exists unclear problems in it, I can not really find any problems in my scene, does any can help me?
the xml file is illustrated below:<Node name="root" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <VisualStyle displayFlags="hideVisual showBehavior hideCollisionModels showMapping" /> <DefaultAnimationLoop name="defaultAnimationLoop" /> <DefaultVisualManagerLoop name="defaultVisualManagerLoop" /> <Node name="simulatedScene" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <EulerImplicitSolver tolerance="0.001" maxIt="1000"/> <CGLinearSolver name="linear solver" iterations="25" tolerance="1e-09" threshold="1e-09" /> <Node name="rigidNode" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <MechanicalObject template="Rigid3d" name="rigidNode_dof" position="0 0 0 0 0 0 1" /> <!-- <UniformMass template="Rigid" name="rigidNode_mass" totalmass="1" /> --> <FixedConstraint template="Rigid3d" name="rigidNode_fixedConstraint" indices="0" /> <Node name="mappedParticles" gravity="0 -10 0" dt="0.01"> <MechanicalObject template="Rigid3d" name="mappedParticles_dof" position="0 0 0 0 0 0 1 " /> <FixedConstraint template="Rigid3d" name="rigidNode_fixedConstraint" index="0" /> <RigidRigidMapping template="Rigid3d,Rigid3d" name="mappedParticles_mapping" input="@/simulatedScene/rigidNode/rigidNode_dof" output="@mappedParticles_dof" /> </Node> </Node> <Node name="independentParticles" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <MechanicalObject template="Rigid3d" name="independentParticles_dof" position="1 0 0 0 0 0 1 2 0 0 0 0 0 1 3 0 0 0 0 0 1 4 0 0 5 0 0 0 0 0 1 " restScale="1" /> <Node name="deformableGrid" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <MechanicalObject template="Rigid3d" name="deformableGrid_dof" position="0 0 0 0 0 0 1 1 0 0 0 0 0 1 2 0 0 0 0 0 1 3 0 0 0 0 0 1 4 0 0 0 0 0 1 5 0 0 0 0 0 1" /> <Mesh name="lines" lines="0 1 1 2 2 3 3 4 4 5" /> <SubsetMultiMapping template="Rigid3d,Rigid3d" name="deformableGrid_mapping" indexPairs="1 0 0 0 0 1 0 2 0 3 0 4" input="@/simulatedScene/independentParticles/independentParticles_dof @/simulatedScene/rigidNode/mappedParticles/mappedParticles_dof" output="@deformableGrid_dof" /> <BeamFEMForceField name="deformableBeam" poissonRatio="0.7" youngModulus="10000000000" radius="0.07" /> </Node> </Node> </Node> </Node>the error showed in the console is “################ SIG11 – SIGSEGV: segfault ##########”
Dear Xiaojuan,
First note that in your scene, tolerance and maxIt defined in EulerImplicitSolver are useless.
Moreover, your problem comes from the initialization of the MechanicalObject “independentParticles_dof”. Look at the position field, the 4th rigid particle is wrong defined (the quaternion is missing).
Here is a corrected version of your scene:
<Node name="root" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <VisualStyle displayFlags="hideVisual showBehavior hideCollisionModels showMapping" /> <DefaultAnimationLoop name="defaultAnimationLoop" /> <DefaultVisualManagerLoop name="defaultVisualManagerLoop" /> <Node name="simulatedScene" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <EulerImplicitSolver /> <CGLinearSolver name="linear solver" iterations="25" tolerance="1e-09" threshold="1e-09" /> <Node name="rigidNode" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <MechanicalObject template="Rigid3d" name="rigidNode_dof" position="0 0 0 0 0 0 1" /> <FixedConstraint template="Rigid3d" name="rigidNode_fixedConstraint" indices="0" /> <Node name="mappedParticles" gravity="0 -10 0" dt="0.01"> <MechanicalObject template="Rigid3d" name="mappedParticles_dof" position="0 0 0 0 0 0 1 " /> <FixedConstraint template="Rigid3d" name="rigidNode_fixedConstraint" indices="0" /> <RigidRigidMapping template="Rigid3d,Rigid3d" name="mappedParticles_mapping" input="@/simulatedScene/rigidNode/rigidNode_dof" output="@mappedParticles_dof" /> </Node> </Node> <Node name="independentParticles" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <MechanicalObject template="Rigid3d" name="independentParticles_dof" position="1 0 0 0 0 0 1 2 0 0 0 0 0 1 3 0 0 0 0 0 1 4 0 0 0 0 0 1 5 0 0 0 0 0 1 " restScale="1" /> <Node name="deformableGrid" gravity="0 -10 0" dt="0.01" time="0" animate="0" > <MechanicalObject template="Rigid3d" name="deformableGrid_dof" position="0 0 0 0 0 0 1 1 0 0 0 0 0 1 2 0 0 0 0 0 1 3 0 0 0 0 0 1 4 0 0 0 0 0 1 5 0 0 0 0 0 1" /> <Mesh name="lines" lines="0 1 1 2 2 3 3 4 4 5" /> <SubsetMultiMapping template="Rigid3d,Rigid3d" name="deformableGrid_mapping" indexPairs="1 0 0 0 0 1 0 2 0 3 0 4" input="@../independentParticles_dof @../../rigidNode/mappedParticles/mappedParticles_dof" output="@deformableGrid_dof" /> <BeamFEMForceField name="deformableBeam" poissonRatio="0.7" youngModulus="10000000000" radius="0.07" /> </Node> </Node> </Node> </Node>Let me know if this helps (it should 😉 )
Hugo
Sorry for my late reply, Hugo, it is very nice of you to help me, I see where the error comes from, I will try the correct version of .scn file ASAP, thank you again!
Hi Xiaojuan,
No worries, do not hesitate to set this topic as solved as soon as it works for you!
Cheers,Hugo
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