Skip to content

Hexa2QuadTopologicalMapping

Topological mapping where HexahedronSetTopology is converted to QuadSetTopology

Target: Sofa.Component.Topology.Mapping

namespace: sofa::component::topology::mapping

parents:

  • TopologicalMapping

Data

Name Description Default value
name object name unnamed
printLog if true, emits extra messages at runtime. 0
tags list of the subsets the objet 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
flipNormals Flip Normal ? (Inverse point order when creating triangle) 0
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
input Input topology to map BaseMeshTopology
output Output topology to map BaseMeshTopology

Examples

Hexa2QuadTopologicalMapping.scn

<?xml version="1.0" ?>
<Node name="root" dt="0.05" showBoundingTree="0" gravity="0 -9.81 0">
    <RequiredPlugin name="Sofa.Component.Collision.Detection.Algorithm"/> <!-- Needed to use components [BVHNarrowPhase BruteForceBroadPhase CollisionPipeline] -->
    <RequiredPlugin name="Sofa.Component.Collision.Detection.Intersection"/> <!-- Needed to use components [MinProximityIntersection] -->
    <RequiredPlugin name="Sofa.Component.Collision.Geometry"/> <!-- Needed to use components [TriangleCollisionModel] -->
    <RequiredPlugin name="Sofa.Component.Collision.Response.Contact"/> <!-- Needed to use components [CollisionResponse] -->
    <RequiredPlugin name="Sofa.Component.Constraint.Projective"/> <!-- Needed to use components [FixedProjectiveConstraint] -->
    <RequiredPlugin name="Sofa.Component.Engine.Select"/> <!-- Needed to use components [BoxROI] -->
    <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.Mapping.Linear"/> <!-- Needed to use components [IdentityMapping] -->
    <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 [HexahedralFEMForceField] -->
    <RequiredPlugin name="Sofa.Component.SolidMechanics.Spring"/> <!-- Needed to use components [QuadularBendingSprings] -->
    <RequiredPlugin name="Sofa.Component.StateContainer"/> <!-- Needed to use components [MechanicalObject] -->
    <RequiredPlugin name="Sofa.Component.Topology.Container.Dynamic"/> <!-- Needed to use components [HexahedronSetGeometryAlgorithms HexahedronSetTopologyContainer HexahedronSetTopologyModifier QuadSetGeometryAlgorithms QuadSetTopologyContainer QuadSetTopologyModifier] -->
    <RequiredPlugin name="Sofa.Component.Topology.Mapping"/> <!-- Needed to use components [Hexa2QuadTopologicalMapping] -->
    <RequiredPlugin name="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
    <RequiredPlugin name="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
    <VisualStyle displayFlags="showBehaviorModels showVisual" />
    <CollisionPipeline verbose="0" />
    <BruteForceBroadPhase/>
    <BVHNarrowPhase/>
    <CollisionResponse response="PenalityContactForceField" />
    <MinProximityIntersection name="Proximity" alarmDistance="0.8" contactDistance="0.5" />
    <DefaultAnimationLoop/>

    <Node name="H">
        <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="meshLoader" filename="mesh/nine_hexa.msh" />
        <MechanicalObject name="Hexa" src="@meshLoader" />
        <include href="Objects/HexahedronSetTopology.xml" src="@meshLoader" drawHexa="1" />
        <HexahedralFEMForceField name="FEM" youngModulus="100" poissonRatio="0.3" method="large" />
        <DiagonalMass massDensity="0.5" />
        <!-- <FixedProjectiveConstraint indices="12 15 28 31" /> -->
        <BoxConstraint box="0 3 0 0 3 1 3 3 0 3 3 1" />
        <Node name="Q">
            <QuadSetTopologyContainer  name="Container" />
            <QuadSetTopologyModifier   name="Modifier" />
            <QuadSetGeometryAlgorithms name="GeomAlgo"   template="Vec3" />
            <Hexa2QuadTopologicalMapping input="@../Container" output="@Container" />
            <QuadularBendingSprings name="FEM-Bend" stiffness="3000" damping="1.0" />
            <TriangleCollisionModel />
            <Node name="Visu">
                <OglModel name="Visual" color="blue" quads="@../Container.quads" />
                <IdentityMapping input="@../../Hexa" output="@Visual" />
            </Node>
        </Node>
    </Node>
</Node>

def createScene(root_node):

   root = root_node.addChild('root', dt="0.05", showBoundingTree="0", gravity="0 -9.81 0")

   root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Detection.Algorithm")
   root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Detection.Intersection")
   root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Geometry")
   root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Response.Contact")
   root.addObject('RequiredPlugin', name="Sofa.Component.Constraint.Projective")
   root.addObject('RequiredPlugin', name="Sofa.Component.Engine.Select")
   root.addObject('RequiredPlugin', name="Sofa.Component.IO.Mesh")
   root.addObject('RequiredPlugin', name="Sofa.Component.LinearSolver.Iterative")
   root.addObject('RequiredPlugin', name="Sofa.Component.Mapping.Linear")
   root.addObject('RequiredPlugin', name="Sofa.Component.Mass")
   root.addObject('RequiredPlugin', name="Sofa.Component.ODESolver.Backward")
   root.addObject('RequiredPlugin', name="Sofa.Component.SolidMechanics.FEM.Elastic")
   root.addObject('RequiredPlugin', name="Sofa.Component.SolidMechanics.Spring")
   root.addObject('RequiredPlugin', name="Sofa.Component.StateContainer")
   root.addObject('RequiredPlugin', name="Sofa.Component.Topology.Container.Dynamic")
   root.addObject('RequiredPlugin', name="Sofa.Component.Topology.Mapping")
   root.addObject('RequiredPlugin', name="Sofa.Component.Visual")
   root.addObject('RequiredPlugin', name="Sofa.GL.Component.Rendering3D")
   root.addObject('VisualStyle', displayFlags="showBehaviorModels showVisual")
   root.addObject('CollisionPipeline', verbose="0")
   root.addObject('BruteForceBroadPhase', )
   root.addObject('BVHNarrowPhase', )
   root.addObject('CollisionResponse', response="PenalityContactForceField")
   root.addObject('MinProximityIntersection', name="Proximity", alarmDistance="0.8", contactDistance="0.5")
   root.addObject('DefaultAnimationLoop', )

   h = root.addChild('H')

   h.addObject('EulerImplicitSolver', name="cg_odesolver", printLog="false", rayleighStiffness="0.1", rayleighMass="0.1")
   h.addObject('CGLinearSolver', iterations="25", name="linear solver", tolerance="1.0e-9", threshold="1.0e-9")
   h.addObject('MeshGmshLoader', name="meshLoader", filename="mesh/nine_hexa.msh")
   h.addObject('MechanicalObject', name="Hexa", src="@meshLoader")
   h.addObject('include', href="Objects/HexahedronSetTopology.xml", src="@meshLoader", drawHexa="1")
   h.addObject('HexahedralFEMForceField', name="FEM", youngModulus="100", poissonRatio="0.3", method="large")
   h.addObject('DiagonalMass', massDensity="0.5")
   h.addObject('BoxConstraint', box="0 3 0 0 3 1 3 3 0 3 3 1")

   q = H.addChild('Q')

   q.addObject('QuadSetTopologyContainer', name="Container")
   q.addObject('QuadSetTopologyModifier', name="Modifier")
   q.addObject('QuadSetGeometryAlgorithms', name="GeomAlgo", template="Vec3")
   q.addObject('Hexa2QuadTopologicalMapping', input="@../Container", output="@Container")
   q.addObject('QuadularBendingSprings', name="FEM-Bend", stiffness="3000", damping="1.0")
   q.addObject('TriangleCollisionModel', )

   visu = Q.addChild('Visu')

   visu.addObject('OglModel', name="Visual", color="blue", quads="@../Container.quads")
   visu.addObject('IdentityMapping', input="@../../Hexa", output="@Visual")