SphereGridTopology

Sphere grid in 3D.

Target: Sofa.Component.Topology.Container.Grid

namespace: sofa::component::topology::container::grid

parents:

• GridTopology

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
edges	List of edge
triangles	List of triangle
quads	List of quad
tetrahedra	List of tetrahedron
hexahedra	List of hexahedron
prisms	List of prism
pyramids	List of pyramid
quadratic_edges	List of quadratic edge
quadratic_triangles	List of quadratic triangle
quadratic_quads	List of quadratic quad
quadratic_tetrahedra	List of quadratic tetrahedron
quadratic_hexahedra	List of quadratic hexahedron
quadratic_prisms	List of quadratic prism
quadratic_pyramids	List of quadratic pyramid
position	List of point positions
uv	List of uv coordinates
computeAllBuffers	Option to compute all crossed topology buffers at init. False by default	0
n	grid resolution. (default = 2 2 2)	2 2 2
computeHexaList	put true if the list of Hexahedra is needed during init (default=true)	1
computeQuadList	put true if the list of Quad is needed during init (default=true)	1
computeTriangleList	put true if the list of Triangles is needed during init (default=true)	1
computeEdgeList	put true if the list of Lines is needed during init (default=true)	1
computePointList	put true if the list of Points is needed during init (default=true)	1
createTexCoords	If set to true, virtual texture coordinates will be generated using 3D interpolation (default=false).	0
center	Center of the cylinder	0 0 0
axis	Main direction of the cylinder	0 0 1
radius	Radius of the cylinder	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	BaseComponent
master	nullptr for regular objects, or master object for which this object is one sub-objects	BaseComponent

Examples

SphereGridTopology.scn

XMLPython

<!-- SphereGrid examples -->
<Node name="root" dt="0.02" gravity="0 -10 0">
    <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.Mapping.Linear"/> <!-- Needed to use components [IdentityMapping] -->
    <RequiredPlugin pluginName="Sofa.Component.Mass"/> <!-- Needed to use components [UniformMass] -->
    <RequiredPlugin pluginName="Sofa.Component.ODESolver.Backward"/> <!-- Needed to use components [EulerImplicitSolver] -->
    <RequiredPlugin pluginName="Sofa.Component.SolidMechanics.FEM.Elastic"/> <!-- Needed to use components [HexahedronFEMForceField TetrahedronFEMForceField] -->
    <RequiredPlugin pluginName="Sofa.Component.SolidMechanics.Spring"/> <!-- Needed to use components [MeshSpringForceField] -->
    <RequiredPlugin pluginName="Sofa.Component.StateContainer"/> <!-- Needed to use components [MechanicalObject] -->
    <RequiredPlugin pluginName="Sofa.Component.Topology.Container.Grid"/> <!-- Needed to use components [SphereGridTopology] -->
    <RequiredPlugin pluginName="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
    <RequiredPlugin pluginName="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
    <VisualStyle displayFlags="showBehaviorModels showForceFields showVisual" />
    <DefaultAnimationLoop/>
    <Node name="SphereFEMTetra">
        <EulerImplicitSolver  rayleighStiffness="0.1" rayleighMass="0.1" />
        <CGLinearSolver iterations="25" tolerance="0.000001" threshold="1e-5"/>
        <MechanicalObject dx="-10" />
        <UniformMass totalMass="100" />
        <SphereGridTopology nx="10" ny="10" nz="10" radius="4.0" axis="0 1 0" />
        <BoxConstraint box="-14 0.5 2.5 -8 4 4" fixAll="0"/>
        <TetrahedronFEMForceField name="FEM" youngModulus="1116" poissonRatio="0.3" method="polar" />
    <Node name="Visu">
            <OglModel name="Visual" color="red" translation="-5 0 0" />
            <IdentityMapping input="@.." output="@Visual" />
        </Node>
    </Node>
    <Node name="SphereFEM">
        <EulerImplicitSolver />
        <CGLinearSolver iterations="25" tolerance="0.000001" threshold="1e-5"/>
        <MechanicalObject />
        <UniformMass totalMass="100" />
        <SphereGridTopology nx="10" ny="10" nz="10" radius="4.0" axis="0 1 0" />
        <BoxConstraint box="-4 0.5 2.5 4 4 4" fixAll="0"/>
        <HexahedronFEMForceField name="FEM" youngModulus="1116" poissonRatio="0.3" method="large" />
    </Node>
    <Node name="SphereSpring">
        <EulerImplicitSolver />
        <CGLinearSolver iterations="25" tolerance="0.000001" threshold="1e-5"/>
        <MechanicalObject dx="10" />
        <UniformMass totalMass="100" />
        <SphereGridTopology nx="10" ny="10" nz="10" radius="4.0" axis="0 1 0" />
        <BoxConstraint box="8 0.5 2.5 14 4 4" fixAll="0"/>
        <MeshSpringForceField name="FEM" stiffness="1000" />
    </Node>

</Node>

def createScene(root_node):

   root = root_node.addChild('root', dt="0.02", gravity="0 -10 0")

   root.addObject('RequiredPlugin', pluginName="Sofa.Component.Constraint.Projective")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.Engine.Select")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.LinearSolver.Iterative")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.Mapping.Linear")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.Mass")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.ODESolver.Backward")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.SolidMechanics.FEM.Elastic")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.SolidMechanics.Spring")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.StateContainer")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.Topology.Container.Grid")
   root.addObject('RequiredPlugin', pluginName="Sofa.Component.Visual")
   root.addObject('RequiredPlugin', pluginName="Sofa.GL.Component.Rendering3D")
   root.addObject('VisualStyle', displayFlags="showBehaviorModels showForceFields showVisual")
   root.addObject('DefaultAnimationLoop', )

   sphere_fem_tetra = root.addChild('SphereFEMTetra')

   sphere_fem_tetra.addObject('EulerImplicitSolver', rayleighStiffness="0.1", rayleighMass="0.1")
   sphere_fem_tetra.addObject('CGLinearSolver', iterations="25", tolerance="0.000001", threshold="1e-5")
   sphere_fem_tetra.addObject('MechanicalObject', dx="-10")
   sphere_fem_tetra.addObject('UniformMass', totalMass="100")
   sphere_fem_tetra.addObject('SphereGridTopology', nx="10", ny="10", nz="10", radius="4.0", axis="0 1 0")
   sphere_fem_tetra.addObject('BoxConstraint', box="-14 0.5 2.5 -8 4 4", fixAll="0")
   sphere_fem_tetra.addObject('TetrahedronFEMForceField', name="FEM", youngModulus="1116", poissonRatio="0.3", method="polar")

   visu = SphereFEMTetra.addChild('Visu')

   visu.addObject('OglModel', name="Visual", color="red", translation="-5 0 0")
   visu.addObject('IdentityMapping', input="@..", output="@Visual")

   sphere_fem = root.addChild('SphereFEM')

   sphere_fem.addObject('EulerImplicitSolver', )
   sphere_fem.addObject('CGLinearSolver', iterations="25", tolerance="0.000001", threshold="1e-5")
   sphere_fem.addObject('MechanicalObject', )
   sphere_fem.addObject('UniformMass', totalMass="100")
   sphere_fem.addObject('SphereGridTopology', nx="10", ny="10", nz="10", radius="4.0", axis="0 1 0")
   sphere_fem.addObject('BoxConstraint', box="-4 0.5 2.5 4 4 4", fixAll="0")
   sphere_fem.addObject('HexahedronFEMForceField', name="FEM", youngModulus="1116", poissonRatio="0.3", method="large")

   sphere_spring = root.addChild('SphereSpring')

   sphere_spring.addObject('EulerImplicitSolver', )
   sphere_spring.addObject('CGLinearSolver', iterations="25", tolerance="0.000001", threshold="1e-5")
   sphere_spring.addObject('MechanicalObject', dx="10")
   sphere_spring.addObject('UniformMass', totalMass="100")
   sphere_spring.addObject('SphereGridTopology', nx="10", ny="10", nz="10", radius="4.0", axis="0 1 0")
   sphere_spring.addObject('BoxConstraint', box="8 0.5 2.5 14 4 4", fixAll="0")
   sphere_spring.addObject('MeshSpringForceField', name="FEM", stiffness="1000")