artisynth.core.femmodels.integration

Class LagrangianFemElementSampler

java.lang.Object

artisynth.core.femmodels.integration.FemElementSamplerBase

artisynth.core.femmodels.integration.LagrangianFemElementSampler

All Implemented Interfaces:

FemElementSampler

public class LagrangianFemElementSampler
extends FemElementSamplerBase

Samples uniformly in Eulerian space

Author:

Antonio

Constructor Summary

Constructors

Constructor and Description
LagrangianFemElementSampler()

Method Summary

Modifier and Type	Method and Description
double	isample(Point3d coord, Point3d pnt) Generates a sample point from within the previously used or assigned finite element, returns probability density of point, used mainly for numerical integration
void	sample(Point3d c, Matrix3d J0, Point3d pnt)
void	sample(Point3d coord, Point3d pnt) Generates a sample point from within the previously used or assigned finite element
static void	sampleElementRejection(FemElement3d elem, CanonicalSampler canonicalSampler, double maxJR0, Point3d c, Matrix3d J0, Point3d pnt) Uses a sample rejection technique to compute a random sample within an element.
void	setElement(FemElement3d elem) Sets the element to sample from

Methods inherited from class artisynth.core.femmodels.integration.FemElementSamplerBase

sample, sample

Methods inherited from class java.lang.Object

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

Constructor Detail

LagrangianFemElementSampler

public LagrangianFemElementSampler()

Method Detail

sampleElementRejection

public static void sampleElementRejection(FemElement3d elem,
                                          CanonicalSampler canonicalSampler,
                                          double maxJR0,
                                          Point3d c,
                                          Matrix3d J0,
                                          Point3d pnt)

Uses a sample rejection technique to compute a random sample within an element.

Parameters:

elem - element

canonicalSampler - samples canonical element

maxJR0 - maximum rest jacobian ratio (compared to canonical element)

c - natural coordinates at sample position

J0 - rest jacobian at sample position

pnt - final point

setElement

public void setElement(FemElement3d elem)

Description copied from interface: FemElementSampler

Sets the element to sample from

Specified by:

setElement in interface FemElementSampler

Overrides:

setElement in class FemElementSamplerBase

Parameters:

elem - element to sample from

sample

public void sample(Point3d c,
                   Matrix3d J0,
                   Point3d pnt)

sample

public void sample(Point3d coord,
                   Point3d pnt)

Description copied from interface: FemElementSampler

Generates a sample point from within the previously used or assigned finite element

Parameters:

coord - sampled local coordinate within the element (natural coordinates)

pnt - spatial location of point

isample

public double isample(Point3d coord,
                      Point3d pnt)

Description copied from interface: FemElementSampler

Generates a sample point from within the previously used or assigned finite element, returns probability density of point, used mainly for numerical integration

Parameters:

coord - sampled local coordinate within the element (natural coordinates)

pnt - spatial location of point

Returns:

probability density function at sampled point