artisynth.core.femmodels

Class FemGeometryTransformer

java.lang.Object

maspack.geometry.GeometryTransformer

maspack.geometry.DeformationTransformer

artisynth.core.femmodels.FemGeometryTransformer

public class FemGeometryTransformer
extends DeformationTransformer

Uses the piecewise smooth deformation field imported by a deformed FEM model to effect a nonlinear geometric transformation.

Nested Class Summary

Nested classes/interfaces inherited from class maspack.geometry.GeometryTransformer

GeometryTransformer.Constrainer, GeometryTransformer.UndoState, GeometryTransformer.UniformScalingConstrainer

Constructor Summary

Constructors

Constructor and Description
FemGeometryTransformer(FemModel3d fem) Creates a FemGeometry transformer for the specified FEM model

Method Summary

Modifier and Type	Method and Description
void	getDeformation(Vector3d p, Matrix3d F, Vector3d r) Computes the deformed position f(r) and deformation gradient F for a given reference point r in undeformed coordinates.
double	getMaxDistance(double maxd) Queries the maximum distance beyond which the deformation field is not applied.
void	setMaxDistance(double maxd) Set a maximum distance maxd (in the rest configuration) beyond which the deformation field is not applied.

Methods inherited from class maspack.geometry.DeformationTransformer

computeLocalTransforms, computeTransform, computeTransform, computeTransform, computeTransform, computeTransformNormal, computeTransformPnt, computeTransformVec, getInverse, isAffine, isInvertible, isRigid

Methods inherited from class maspack.geometry.GeometryTransformer

computeLinearizedTransform, computeLocalAffineTransform, computeTransform, create, getUndoDataSize, isReflecting, isRestoring, isSaving, popRestoreData, restoreObject, saveObject, setUndoState, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transformNormal, transformNormal, transformPnt, transformPnt, transformVec, transformVec, transformWorld, transformWorld

Methods inherited from class java.lang.Object

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

Constructor Detail

FemGeometryTransformer

public FemGeometryTransformer(FemModel3d fem)

Creates a FemGeometry transformer for the specified FEM model

Parameters:

fem - FEM model associated with the transformer

Method Detail

setMaxDistance

public void setMaxDistance(double maxd)

Set a maximum distance maxd (in the rest configuration) beyond which the deformation field is not applied. Specifically, no deformation is applied at points whose rest distance from the FEM position exceeds maxd. A negative value implies to maximum distance is in effect. The default value is -1.

Parameters:

maxd - maximum rest distance

See Also:

getMaxDistance

getMaxDistance

public double getMaxDistance(double maxd)

Queries the maximum distance beyond which the deformation field is not applied.

Returns:

maxd maximum rest distance

See Also:

setMaxDistance

getDeformation

public void getDeformation(Vector3d p,
                           Matrix3d F,
                           Vector3d r)

Computes the deformed position f(r) and deformation gradient F for a given reference point r in undeformed coordinates.

Specified by:

getDeformation in class DeformationTransformer

Parameters:

p - if non-null, returns the deformed position

F - if non-null, returns the deformation gradient

r - reference point in undeformed coordinates