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VisualMesh

Render a mesh

Target: Sofa.Component.Visual

namespace: sofa::component::visual

parents:

  • VisualModel

Data

Name Description Default value
name object name unnamed
printLog if true, emits extra messages at runtime. 0
tags list of the subsets the object belongs to
bbox this object bounding box
componentState The state of the component among (Dirty, Valid, Undefined, Loading, Invalid). Undefined
listening if true, handle the events, otherwise ignore the events 0
enable Display the object or not 1
position The position of the vertices of mesh
elementSpace The space between element (scalar between 0 and 1) 0.15
Name Description Destination type name
context Graph Node containing this object (or BaseContext::getDefault() if no graph is used) BaseContext
slaves Sub-objects used internally by this object BaseObject
master nullptr for regular objects, or master object for which this object is one sub-objects BaseObject
topology Link to a topology containing elements BaseMeshTopology

Examples

VisualMesh.scn

<?xml version="1.0"?>
<Node name="root" dt="0.01" gravity="0 -9.81 0">

    <Node name="tetra">
        <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" />

        <RegularGridTopology name="grid" min="-5 -5 0" max="5 5 40" n="5 5 20"/>
        <MechanicalObject template="Vec3" name="state"/>

        <TetrahedronSetTopologyContainer name="Tetra_topo" position="@grid.position"/>
        <TetrahedronSetTopologyModifier name="Modifier" />
        <TetrahedronSetGeometryAlgorithms template="Vec3" name="GeomAlgo" />
        <Hexa2TetraTopologicalMapping input="@grid" output="@Tetra_topo" />

        <DiagonalMass massDensity="0.2" />
        <TetrahedronFEMForceField name="FEM" youngModulus="1000" poissonRatio="0.4" computeGlobalMatrix="false"/>

        <BoxROI template="Vec3" name="box_roi" box="-6 -6 -1 50 6 0.1" drawBoxes="1" />
        <FixedProjectiveConstraint template="Vec3" indices="@box_roi.indices" />

        <VisualMesh position="@state.position" topology="@Tetra_topo"/>
    </Node>

    <Node name="hexa">
        <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" />

        <RegularGridTopology name="grid" min="10 -5 0" max="20 5 40" n="5 5 20"/>
        <MechanicalObject template="Vec3" name="state"/>

        <DiagonalMass massDensity="0.2" />
        <HexahedronFEMForceField name="FEM" youngModulus="1000" poissonRatio="0.4" method="large"/>

        <BoxROI template="Vec3" name="box_roi" box="-6 -6 -1 50 6 0.1" drawBoxes="1" />
        <FixedProjectiveConstraint template="Vec3" indices="@box_roi.indices" />

        <VisualMesh position="@state.position" topology="@grid"/>
    </Node>

    <Node name="triangles">
        <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" />
        <MechanicalObject name="state"/>
        <MeshMatrixMass totalMass="1000" />
        <RegularGridTopology name="grid" nx="5" ny="5" nz="1" min="25 -5 0" max="35 5 0"/>
        <BoxROI box="24 4.99 -0.1 36 5.01 0.1" name="box"/>
        <FixedProjectiveConstraint indices="@box.indices" />
        <TriangleFEMForceField name="FEM1" youngModulus="5000" poissonRatio="0.3" method="large" />
        <VisualMesh position="@state.position" topology="@grid"/>
    </Node>
</Node>

def createScene(root_node):

   root = root_node.addChild('root', dt="0.01", gravity="0 -9.81 0")

   tetra = root.addChild('tetra')

   tetra.addObject('EulerImplicitSolver', name="cg_odesolver", printLog="false", rayleighStiffness="0.1", rayleighMass="0.1")
   tetra.addObject('CGLinearSolver', iterations="25", name="linear solver", tolerance="1.0e-9", threshold="1.0e-9")
   tetra.addObject('RegularGridTopology', name="grid", min="-5 -5 0", max="5 5 40", n="5 5 20")
   tetra.addObject('MechanicalObject', template="Vec3", name="state")
   tetra.addObject('TetrahedronSetTopologyContainer', name="Tetra_topo", position="@grid.position")
   tetra.addObject('TetrahedronSetTopologyModifier', name="Modifier")
   tetra.addObject('TetrahedronSetGeometryAlgorithms', template="Vec3", name="GeomAlgo")
   tetra.addObject('Hexa2TetraTopologicalMapping', input="@grid", output="@Tetra_topo")
   tetra.addObject('DiagonalMass', massDensity="0.2")
   tetra.addObject('TetrahedronFEMForceField', name="FEM", youngModulus="1000", poissonRatio="0.4", computeGlobalMatrix="false")
   tetra.addObject('BoxROI', template="Vec3", name="box_roi", box="-6 -6 -1 50 6 0.1", drawBoxes="1")
   tetra.addObject('FixedProjectiveConstraint', template="Vec3", indices="@box_roi.indices")
   tetra.addObject('VisualMesh', position="@state.position", topology="@Tetra_topo")

   hexa = root.addChild('hexa')

   hexa.addObject('EulerImplicitSolver', name="cg_odesolver", printLog="false", rayleighStiffness="0.1", rayleighMass="0.1")
   hexa.addObject('CGLinearSolver', iterations="25", name="linear solver", tolerance="1.0e-9", threshold="1.0e-9")
   hexa.addObject('RegularGridTopology', name="grid", min="10 -5 0", max="20 5 40", n="5 5 20")
   hexa.addObject('MechanicalObject', template="Vec3", name="state")
   hexa.addObject('DiagonalMass', massDensity="0.2")
   hexa.addObject('HexahedronFEMForceField', name="FEM", youngModulus="1000", poissonRatio="0.4", method="large")
   hexa.addObject('BoxROI', template="Vec3", name="box_roi", box="-6 -6 -1 50 6 0.1", drawBoxes="1")
   hexa.addObject('FixedProjectiveConstraint', template="Vec3", indices="@box_roi.indices")
   hexa.addObject('VisualMesh', position="@state.position", topology="@grid")

   triangles = root.addChild('triangles')

   triangles.addObject('EulerImplicitSolver', name="cg_odesolver", printLog="false", rayleighStiffness="0.1", rayleighMass="0.1")
   triangles.addObject('CGLinearSolver', iterations="25", name="linear solver", tolerance="1.0e-9", threshold="1.0e-9")
   triangles.addObject('MechanicalObject', name="state")
   triangles.addObject('MeshMatrixMass', totalMass="1000")
   triangles.addObject('RegularGridTopology', name="grid", nx="5", ny="5", nz="1", min="25 -5 0", max="35 5 0")
   triangles.addObject('BoxROI', box="24 4.99 -0.1 36 5.01 0.1", name="box")
   triangles.addObject('FixedProjectiveConstraint', indices="@box.indices")
   triangles.addObject('TriangleFEMForceField', name="FEM1", youngModulus="5000", poissonRatio="0.3", method="large")
   triangles.addObject('VisualMesh', position="@state.position", topology="@grid")