net.sf.ij_plugins.math

Class PiecewiseFunction

java.lang.Object

net.sf.ij_plugins.math.PiecewiseFunction

All Implemented Interfaces:

java.lang.Cloneable, IFunction

Direct Known Subclasses:

CubicSplineFunction

public class PiecewiseFunction
extends java.lang.Object
implements IFunction, java.lang.Cloneable

Defines a 1D piecewise liner function mapping.

Author:

Jarek Sacha

Field Summary

Fields

Modifier and Type	Field and Description
protected double[]	xa
protected double[]	ya

Constructor Summary

Constructors

Constructor and Description
PiecewiseFunction(double[] x, double[] y)
PiecewiseFunction(java.awt.geom.Point2D[] controlPoints)

Method Summary

Methods

Modifier and Type	Method and Description
PiecewiseFunction	clone()
double	evaluate(double x)
double[]	evaluate(double[] x)
java.awt.geom.Point2D[]	getControlPoints()
static void	sort(java.awt.geom.Point2D[] controlPoints) Sort points by increasing value of 'x', value of y is ignored.

Methods inherited from class java.lang.Object

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

Field Detail

xa

protected double[] xa

ya

protected double[] ya

Constructor Detail

PiecewiseFunction

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

PiecewiseFunction

public PiecewiseFunction(java.awt.geom.Point2D[] controlPoints)

Method Detail

evaluate

public double evaluate(double x)

Specified by:

evaluate in interface IFunction

evaluate

public double[] evaluate(double[] x)

Specified by:

evaluate in interface IFunction

getControlPoints

public java.awt.geom.Point2D[] getControlPoints()

clone

public PiecewiseFunction clone()
                        throws java.lang.CloneNotSupportedException

Overrides:

clone in class java.lang.Object

Throws:

java.lang.CloneNotSupportedException

sort

public static void sort(java.awt.geom.Point2D[] controlPoints)

Sort points by increasing value of 'x', value of y is ignored.

Parameters:

controlPoints - array of points to be sorted in place.