artisynth.core.femmodels

Class QuadwedgeElement

java.lang.Object

artisynth.core.modelbase.ModelComponentBase

artisynth.core.modelbase.RenderableComponentBase

artisynth.core.femmodels.FemElement

artisynth.core.femmodels.FemElement3d

artisynth.core.femmodels.QuadwedgeElement

All Implemented Interfaces:

FrameAttachable, PointAttachable, CopyableComponent, ModelComponent, PropertyChangeListener, RenderableComponent, ScalableUnits, java.lang.Cloneable, Boundable, HasProperties, HierarchyNode, HasRenderProps, IsRenderable, IsSelectable, Renderable, Scannable

public class QuadwedgeElement
extends FemElement3d

Nested Class Summary

Nested classes/interfaces inherited from interface artisynth.core.modelbase.ModelComponent

ModelComponent.NavpanelVisibility

Field Summary

Fields inherited from class artisynth.core.femmodels.FemElement3d

myProps

Fields inherited from class artisynth.core.modelbase.ModelComponentBase

enforceUniqueCompositeNames, enforceUniqueNames, myNumber, NULL_OBJ, useCompactPathNames

Fields inherited from interface artisynth.core.modelbase.CopyableComponent

COPY_REFERENCES

Fields inherited from interface maspack.render.IsRenderable

TRANSPARENT, TWO_DIMENSIONAL

Constructor Summary

Constructors

Constructor and Description
QuadwedgeElement()
QuadwedgeElement(FemNode3d[] nodes)
QuadwedgeElement(WedgeElement wedge, FemNode3d[] quadraticNodes) Create a QuadwedgeElement based on the NODE POSITIONS of a given WedgeElement (i.e.

Method Summary

Modifier and Type	Method and Description
boolean	coordsAreInside(Vector3d coords)
void	getdNds(Vector3d dNds, int i, Vector3d coords)
int[]	getEdgeIndices()
int[]	getFaceIndices()
double	getH(int i, Vector3d coords) Returns the value of the pressure shape function.
double[]	getIntegrationCoords()
IntegrationPoint3d[]	getIntegrationPoints()
double	getN(int i, Vector3d coords)
double[]	getNodalExtrapolationMatrix()
double[]	getNodeCoords()
Matrix	getPressureWeightMatrix() Returns the pressure weight matrix for this element.
static FemNode3d[]	getQuadraticNodes(FemNode3d n0, FemNode3d n1, FemNode3d n2, FemNode3d n3, FemNode3d n4, FemNode3d n5)
static FemNode3d[]	getQuadraticNodes(WedgeElement wedge)
IntegrationPoint3d	getWarpingPoint()
int	numIntegrationPoints()
int	numPressureVals() Returns the number of pressure variables associated with this element.
void	render(Renderer renderer, RenderProps props, int flags)
void	renderWidget(Renderer renderer, double size, RenderProps props)
FemNode3d[][]	triangulateFace(FaceNodes3d face)

Methods inherited from class artisynth.core.femmodels.FemElement3d

addAuxiliaryMaterial, addNodeForce, addNodeStiffness, clearState, computeCentroid, computeCovariance, computeDirectedRenderSize, computeGravityWeights, computeJacobian, computePosition, computePressures, computeRenderCoordsAndGradient, computeRestVolumes, computeVolumes, computeWarping, connectToHierarchy, copy, createElement, createElement, createFrameAttachment, createIntegrationPoints, createPointAttachment, disconnectFromHierarchy, getAllPropertyInfo, getAuxiliaryMaterials, getCopyReferences, getElementWidgetSize, getElementWidgetSizeMode, getFaces, getFrame, getIncompressConstraints, getIncompressIndex, getIntegrationData, getLagrangePressures, getMarkerCoordinates, getNaturalCoordinates, getNaturalCoordinates, getNaturalCoordinatesGSS, getNaturalCoordinatesOld, getNaturalCoordinatesStd, getNodeCoords, getNodeNeighbors, getNodes, getNumEdges, getNumFaces, getPoint, getRestVolumes, getStiffnessWarper, getVolumes, getWarpingData, hasEdge, hasFace, hasFace, invalidateRestData, isInside, isInvertedAtRest, materialsAreInvertible, numAuxiliaryMaterials, numPoints, removeAuxiliaryMaterial, scaleDistance, setElementWidgetSize, setElementWidgetSizeMode, setFrame, setIncompressIndex, setStiffnessWarper, updateBounds

Methods inherited from class artisynth.core.femmodels.FemElement

containsNode, createRenderProps, getDensity, getDensityMode, getEffectiveMaterial, getHardReferences, getIndex, getLocalNodeIndex, getMass, getMaterial, getRestVolume, getSelection, getVolume, hasActiveNodes, hasControllableNodes, integrationPointsInterpolateToNodes, integrationPointsMapToNodes, isDuplicatable, isInverted, isMassExplicit, numberString, numNodes, prerender, propertyChanged, render, scaleMass, setDensity, setDensityMode, setIndex, setInverted, setMass, setMassExplicit, setMaterial, updateRestVolumeAndMass

Methods inherited from class artisynth.core.modelbase.RenderableComponentBase

getRenderHints, getRenderProps, isSelectable, numSelectionQueriesNeeded, setRenderProps, updateRenderProps

Methods inherited from class artisynth.core.modelbase.ModelComponentBase

checkFlag, checkName, checkNameUniqueness, clearFlag, clone, createTempFlag, getChildren, getGrandParent, getName, getNameRange, getNavpanelVisibility, getNavpanelVisibility, getNumber, getParent, getProperty, getSoftReferences, hasChildren, hasState, isConnectedToHierarchy, isFixed, isMarked, isSelected, isWritable, makeValidName, makeValidName, notifyParentOfChange, postscan, printReferences, recursivelyContained, recursivelyContains, removeTempFlag, scan, setFixed, setFlag, setMarked, setName, setNavpanelVisibility, setNavpanelVisibility, setNumber, setParent, setSelected, updateReferences, write

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface artisynth.core.modelbase.ModelComponent

getHardReferences, getName, getNavpanelVisibility, getNumber, getParent, getSoftReferences, hasState, isFixed, isMarked, isSelected, notifyParentOfChange, postscan, scan, setFixed, setMarked, setName, setNumber, setParent, setSelected, updateReferences

Methods inherited from interface maspack.properties.HasProperties

getProperty

Methods inherited from interface maspack.properties.HierarchyNode

getChildren, hasChildren

Methods inherited from interface maspack.util.Scannable

isWritable, write

Constructor Detail

QuadwedgeElement

public QuadwedgeElement()

QuadwedgeElement

public QuadwedgeElement(WedgeElement wedge,
                        FemNode3d[] quadraticNodes)

Create a QuadwedgeElement based on the NODE POSITIONS of a given WedgeElement (i.e. it does not inherit any other attributes of the WedgeElement). Takes the 6 nodes of the given WedgeElement along with the 9 given quadraticNodes as the middle nodes to create a 15 node quadratic wedge.

Parameters:

wedge - A wedge element

quadraticNodes - the 9 edge nodes

QuadwedgeElement

public QuadwedgeElement(FemNode3d[] nodes)

Method Detail

getIntegrationPoints

public IntegrationPoint3d[] getIntegrationPoints()

Specified by:

getIntegrationPoints in class FemElement3d

getWarpingPoint

public IntegrationPoint3d getWarpingPoint()

Specified by:

getWarpingPoint in class FemElement3d

coordsAreInside

public boolean coordsAreInside(Vector3d coords)

Specified by:

coordsAreInside in class FemElement3d

numIntegrationPoints

public int numIntegrationPoints()

Specified by:

numIntegrationPoints in class FemElement3d

getIntegrationCoords

public double[] getIntegrationCoords()

Specified by:

getIntegrationCoords in class FemElement3d

getNodeCoords

public double[] getNodeCoords()

Specified by:

getNodeCoords in class FemElement3d

getNodalExtrapolationMatrix

public double[] getNodalExtrapolationMatrix()

Specified by:

getNodalExtrapolationMatrix in class FemElement3d

getN

public double getN(int i,
                   Vector3d coords)

Specified by:

getN in class FemElement3d

numPressureVals

public int numPressureVals()

Returns the number of pressure variables associated with this element. All of the linear elements have one pressure variable, whereas some of the quadratic elements have more.

Overrides:

numPressureVals in class FemElement3d

Returns:

number of pressure variables.make

getH

public double getH(int i,
                   Vector3d coords)

Returns the value of the pressure shape function. By default, this method returns 1, corresponding to a single pressure variable with constant value over the entire element. Elements with a larger number of pressure DOFs should override this method to supply the appropriate shape functions.

Overrides:

getH in class FemElement3d

Parameters:

i - index of the pressure variable; should be less than the value returned by FemElement3d.numPressureVals()

coords - coordinates at which the shape function should be evaluated.

Returns:

value of the pressure shape function

getPressureWeightMatrix

public Matrix getPressureWeightMatrix()

Description copied from class: FemElement3d

Returns the pressure weight matrix for this element. The pressure weight matrix is given by the inverse of the integral of H^T H, where H is the row vector formed from the pressure shape functions.

By default, this method returns a pressure weight matrix for the case where there is only one pressure value. Such matrices always have a single value of 1. Elements with a larger number of pressure values should override this method to return a pressure weight matrix appropriate for that element.

Overrides:

getPressureWeightMatrix in class FemElement3d

Returns:

pressure weight matrix for this element

getdNds

public void getdNds(Vector3d dNds,
                    int i,
                    Vector3d coords)

Specified by:

getdNds in class FemElement3d

getQuadraticNodes

public static FemNode3d[] getQuadraticNodes(WedgeElement wedge)

getQuadraticNodes

public static FemNode3d[] getQuadraticNodes(FemNode3d n0,
                                            FemNode3d n1,
                                            FemNode3d n2,
                                            FemNode3d n3,
                                            FemNode3d n4,
                                            FemNode3d n5)

getEdgeIndices

public int[] getEdgeIndices()

Specified by:

getEdgeIndices in class FemElement3d

getFaceIndices

public int[] getFaceIndices()

Specified by:

getFaceIndices in class FemElement3d

render

public void render(Renderer renderer,
                   RenderProps props,
                   int flags)

Specified by:

render in class FemElement

renderWidget

public void renderWidget(Renderer renderer,
                         double size,
                         RenderProps props)

Specified by:

renderWidget in class FemElement3d

triangulateFace

public FemNode3d[][] triangulateFace(FaceNodes3d face)

Overrides:

triangulateFace in class FemElement3d