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Add backbone of the MeshRepulsionEngine that will move one mesh outside from another #1

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Add backbone of the MeshRepulsionEngine that will move one mesh outside from another #1

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03b9ebf
Add test scene
epernod Jun 30, 2026
4149d9a
fix compilation
epernod Jun 30, 2026
f208b01
Add backbone of the component
epernod Jun 30, 2026
ce93789
forgot registration
epernod Jun 30, 2026
b17a18b
add code to acces position and topology of both master and slave obje…
epernod Jun 30, 2026
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2 changes: 2 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ set(HEADER_FILES
${PLUGIN_CGAL_SRC_DIR}/FrontSurfaceReconstruction.h
${PLUGIN_CGAL_SRC_DIR}/UpsamplePointCloud.h
${PLUGIN_CGAL_SRC_DIR}/BooleanOperations.h
${PLUGIN_CGAL_SRC_DIR}/MeshRepulsionEngine.h
)
set(SOURCE_FILES
${PLUGIN_CGAL_SRC_DIR}/initCGALPlugin.cpp
Expand All @@ -30,6 +31,7 @@ set(SOURCE_FILES
${PLUGIN_CGAL_SRC_DIR}/FrontSurfaceReconstruction.cpp
${PLUGIN_CGAL_SRC_DIR}/UpsamplePointCloud.cpp
${PLUGIN_CGAL_SRC_DIR}/BooleanOperations.cpp
${PLUGIN_CGAL_SRC_DIR}/MeshRepulsionEngine.cpp
)
set(README_FILES README.md)

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64 changes: 64 additions & 0 deletions scenes/MeshRepulsion.scn
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@@ -0,0 +1,64 @@
<?xml version="1.0"?>
<Node name="root" gravity="0 0 0" dt="0.03" >
<RequiredPlugin pluginName="Sofa.Component.IO.Mesh"/> <!-- Needed to use components [MeshOBJLoader] -->
<RequiredPlugin pluginName="Sofa.Component.Mapping.Linear"/> <!-- Needed to use components [IdentityMapping] -->
<RequiredPlugin pluginName="Sofa.Component.Setting"/> <!-- Needed to use components [BackgroundSetting] -->
<RequiredPlugin pluginName="Sofa.Component.StateContainer"/> <!-- Needed to use components [MechanicalObject] -->
<RequiredPlugin pluginName="Sofa.Component.Topology.Container.Constant"/> <!-- Needed to use components [MeshTopology] -->
<RequiredPlugin pluginName="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
<RequiredPlugin pluginName="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
<RequiredPlugin pluginName="Sofa.Component.Constraint.Projective"/> <!-- Needed to use components [FixedProjectiveConstraint] -->
<RequiredPlugin pluginName="Sofa.Component.Engine.Select"/> <!-- Needed to use components [BoxROI] -->
<RequiredPlugin pluginName="Sofa.Component.LinearSolver.Iterative"/> <!-- Needed to use components [CGLinearSolver] -->
<RequiredPlugin pluginName="Sofa.Component.Mass"/> <!-- Needed to use components [DiagonalMass] -->
<RequiredPlugin pluginName="Sofa.Component.ODESolver.Backward"/> <!-- Needed to use components [EulerImplicitSolver] -->
<RequiredPlugin pluginName="Sofa.Component.SolidMechanics.Spring"/> <!-- Needed to use components [MeshSpringForceField] -->
<RequiredPlugin pluginName="CGALPlugin"/>

<BackgroundSetting color="0 0.16862745098 0.21176470588"/>
<VisualStyle displayFlags="showVisual" />

<DefaultAnimationLoop />

<Node name="MasterMesh">
<MeshOBJLoader name="loader" filename="./data/mesh/liver_coarse.obj" triangulate="true"/>
<MechanicalObject name="dofs" position="@loader.position"/>
<MeshTopology name="topology" src="@loader"/>

<Node name="Visual" >
<OglModel name="visu" src="@../loader" color="red"/>
<IdentityMapping input="@../dofs" output="@visu"/>
</Node>
</Node>


<Node name="SlaveMesh">
<EulerImplicitSolver name="cg_odesolver" rayleighStiffness="0.0" rayleighMass="1.0" />
<CGLinearSolver iterations="15" name="linear_solver" tolerance="1.0e-5" threshold="1.0e-5" />
<MeshOBJLoader name="loader" filename="./data/mesh/diaphragm.obj" triangulate="true"/>
<MechanicalObject name="dofs" position="@loader.position"/>
<MeshTopology name="topology" src="@loader"/>

<!-- to adapt to the scene -->
<BoxROI name="box_roi" box="-4 3.4 -5 8 4 5" drawBoxes="1"/>
<FixedProjectiveConstraint indices="@[-1].indices" />

<UniformMass totalMass="0.5" />
<!-- gmsh file should be used with tetrahedra to use the mesh spring volume
<MeshSpringForceField name="Springs" tetrasStiffness="400" tetrasDamping="0" /> -->

<TriangularFEMForceField name="FEM" youngModulus="600" poissonRatio="0.3" method="large" />
<TriangularBendingSprings name="BS" stiffness="300" damping="1.0" />

<Node name="Visual" >
<OglModel name="visu" src="@../loader" color="white"/>
<IdentityMapping input="@../dofs" output="@visu"/>
</Node>
</Node>

<MeshRepulsionEngine name="theEngine" masterState="@MasterMesh/dofs" slaveState="@SlaveMesh/dofs"
masterTopology="@MasterMesh/topology" slaveTopology="@SlaveMesh/topology"/>


<!--<VTKExporter name="exporter" filename="data/output.vtu" XMLformat="1" edges="0" tetras="1" listening="true" exportAtBegin="true" cellsDataFields="generator.outputCellData" overwrite="true"/>-->
</Node>
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