artisynth.core.opensim.components

Class NaturalCubicSpline

java.lang.Object

artisynth.core.opensim.components.OpenSimObject

artisynth.core.opensim.components.FunctionBase

artisynth.core.opensim.components.NaturalCubicSpline

All Implemented Interfaces:

java.lang.Cloneable, Clonable

Direct Known Subclasses:

SimmSpline

public class NaturalCubicSpline
extends FunctionBase

Simple 2D Natural Cubic Spline for interpolation in OpenSim Models

Constructor Summary

Constructors

Constructor and Description
NaturalCubicSpline()
NaturalCubicSpline(double[] x, double[] y)

Method Summary

Modifier and Type	Method and Description
NaturalCubicSpline	clone()
double	eval(VectorNd x) Evaluates the function at the given input value
void	evalDeriv(VectorNd df, VectorNd x) Evaluates the function derivative at the given input value
CubicHermiteSpline1d	getFunction()
static void	main(java.lang.String[] args)
void	set(double[] x, double[] y) Sets the spline knot locations
double	solveForNearestX(double fx, double x, double eps)
int	solveForX(double y, java.util.List<java.lang.Double> x, double eps)
boolean	validate() Verify that endspoints and endpoint derivatives match

Methods inherited from class artisynth.core.opensim.components.OpenSimObject

getName, getParent, getPath, setName, setParent

Methods inherited from class java.lang.Object

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

Constructor Detail

NaturalCubicSpline

public NaturalCubicSpline()

NaturalCubicSpline

public NaturalCubicSpline(double[] x,
                          double[] y)

Method Detail

validate

public boolean validate()

Verify that endspoints and endpoint derivatives match

Returns:

true if match, false otherwise

set

public void set(double[] x,
                double[] y)

Sets the spline knot locations

Parameters:

x - x location

y - location

eval

public double eval(VectorNd x)

Description copied from class: FunctionBase

Evaluates the function at the given input value

Specified by:

eval in class FunctionBase

evalDeriv

public void evalDeriv(VectorNd df,
                      VectorNd x)

Description copied from class: FunctionBase

Evaluates the function derivative at the given input value

Specified by:

evalDeriv in class FunctionBase

getFunction

public CubicHermiteSpline1d getFunction()

Specified by:

getFunction in class FunctionBase

solveForX

public int solveForX(double y,
                     java.util.List<java.lang.Double> x,
                     double eps)

solveForNearestX

public double solveForNearestX(double fx,
                               double x,
                               double eps)

clone

public NaturalCubicSpline clone()

Specified by:

clone in interface Clonable

Overrides:

clone in class FunctionBase

main

public static void main(java.lang.String[] args)