CubeTopology

Surface topology of a cube in 3D (points, edges and quads).

Target: Sofa.Component.Topology.Container.Constant

namespace: sofa::component::topology::container::constant

parents:

• MeshTopology

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
filename	Filename of the mesh
position	List of point positions
edges	List of edge indices
triangles	List of triangle indices
quads	List of quad indices
tetrahedra	List of tetrahedron indices
hexahedra	List of hexahedron indices
uv	List of uv coordinates
nx	x grid resolution	0
ny	y grid resolution	0
nz	z grid resolution	0
internalPoints	include internal points (allow a one-to-one mapping between points from RegularGridTopology and CubeTopology)	0
splitNormals	split corner points to have planar normals	0
min	Min	0 0 0
max	Max	1 1 1
Visualization
drawEdges	if true, draw the topology Edges	0
drawTriangles	if true, draw the topology Triangles	0
drawQuads	if true, draw the topology Quads	0
drawTetrahedra	if true, draw the topology Tetrahedra	0
drawHexahedra	if true, draw the topology hexahedra	0

Links

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

Examples

CubeTopology.scn

XMLPython

<Node name="root" dt="0.02">
    <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 [DiscreteIntersection] -->
    <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.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 [UniformMass] -->
    <RequiredPlugin name="Sofa.Component.ODESolver.Backward"/> <!-- Needed to use components [EulerImplicitSolver] -->
    <RequiredPlugin name="Sofa.Component.SolidMechanics.FEM.Elastic"/> <!-- Needed to use components [TriangleFEMForceField] -->
    <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.Constant"/> <!-- Needed to use components [CubeTopology] -->
    <RequiredPlugin name="Sofa.Component.Topology.Container.Dynamic"/> <!-- Needed to use components [TriangleSetGeometryAlgorithms TriangleSetTopologyContainer TriangleSetTopologyModifier] -->
    <RequiredPlugin name="Sofa.Component.Topology.Mapping"/> <!-- Needed to use components [Quad2TriangleTopologicalMapping] -->
    <RequiredPlugin name="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
    <RequiredPlugin name="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
    <CollisionPipeline verbose="0" name="CollisionPipeline" />
    <BruteForceBroadPhase/>
    <BVHNarrowPhase/>
    <CollisionResponse response="PenalityContactForceField" name="collision response" />
    <DiscreteIntersection/>
    <DefaultAnimationLoop/>

    <Node name="Cubes" >
    <VisualStyle displayFlags="showForceFields" />
        <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" />
        <CubeTopology internalPoints="0" splitNormals="1" name="cubeTopo" nx="3" ny="3" nz="5" min="-0.015 -0.015 -0.075" max="0.015 0.015 0.075" />
        <Node name="topoTriangle" >
            <include href="Objects/TriangleSetTopology.xml" src="@../cubeTopo"/>
            <Quad2TriangleTopologicalMapping input="@../cubeTopo" output="@Container"/>
            <MechanicalObject name="dofs" printLog="1" position="@../cubeTopo.position"/>
            <FixedProjectiveConstraint name="FixedProjectiveConstraint" indices="3 39 64" />
            <TriangleFEMForceField name="FEM1" youngModulus="500" poissonRatio="0.3" method="large" />
            <TriangularBendingSprings name="FEM-Bend" stiffness="3000" damping="1.0"/>
            <UniformMass vertexMass="0.1" />

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

def createScene(root_node):

   root = root_node.addChild('root', dt="0.02")

   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.Response.Contact")
   root.addObject('RequiredPlugin', name="Sofa.Component.Constraint.Projective")
   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.Constant")
   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('CollisionPipeline', verbose="0", name="CollisionPipeline")
   root.addObject('BruteForceBroadPhase', )
   root.addObject('BVHNarrowPhase', )
   root.addObject('CollisionResponse', response="PenalityContactForceField", name="collision response")
   root.addObject('DiscreteIntersection', )
   root.addObject('DefaultAnimationLoop', )

   cubes = root.addChild('Cubes')

   cubes.addObject('VisualStyle', displayFlags="showForceFields")
   cubes.addObject('EulerImplicitSolver', name="cg_odesolver", printLog="false", rayleighStiffness="0.1", rayleighMass="0.1")
   cubes.addObject('CGLinearSolver', iterations="25", name="linear solver", tolerance="1.0e-9", threshold="1.0e-9")
   cubes.addObject('CubeTopology', internalPoints="0", splitNormals="1", name="cubeTopo", nx="3", ny="3", nz="5", min="-0.015 -0.015 -0.075", max="0.015 0.015 0.075")

   topo_triangle = Cubes.addChild('topoTriangle')

   topo_triangle.addObject('include', href="Objects/TriangleSetTopology.xml", src="@../cubeTopo")
   topo_triangle.addObject('Quad2TriangleTopologicalMapping', input="@../cubeTopo", output="@Container")
   topo_triangle.addObject('MechanicalObject', name="dofs", printLog="1", position="@../cubeTopo.position")
   topo_triangle.addObject('FixedProjectiveConstraint', name="FixedProjectiveConstraint", indices="3 39 64")
   topo_triangle.addObject('TriangleFEMForceField', name="FEM1", youngModulus="500", poissonRatio="0.3", method="large")
   topo_triangle.addObject('TriangularBendingSprings', name="FEM-Bend", stiffness="3000", damping="1.0")
   topo_triangle.addObject('UniformMass', vertexMass="0.1")

   visu = topoTriangle.addChild('Visu')

   visu.addObject('OglModel', name="Visual", color="red")
   visu.addObject('IdentityMapping', input="@../dofs", output="@Visual")