lt.monarch.math
Class CubicSpline

java.lang.Object
  lt.monarch.math.CubicSpline

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, AbstractSpline

public class CubicSpline
extends java.lang.Object
implements AbstractSpline

Cubic spline implementation. Data can not have adjacent identical values (x[i]!=x[i-1]).

See Also:

Serialized Form

Field Summary

Modifier and Type	Field and Description
protected Orientation	orientation HORIZONTAL - from right to left; VERTICAL - from bottom to top;
protected double[]	xa
protected Point2D[]	xy
protected double[]	y2
protected double[]	ya

Constructor and Description

CubicSpline()

Method Summary

Modifier and Type	Method and Description
AbstractSpline	clone() Clones the object
Point2D[]	getLines() Gets spline line array
Orientation	getOrientation()
double[]	interpolateYAt(double x) Interpolates x value and returns the Y values array
boolean	isXValueInRange(double x)
boolean	isYValueInRange(double y)
void	setData(double[] x, double[] y, int n, int step) Sets spline data
void	setOrientation(Orientation orientation)

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

y2

protected double[] y2

xy

protected Point2D[] xy

orientation

protected Orientation orientation

HORIZONTAL - from right to left; VERTICAL - from bottom to top;

Constructor Detail

CubicSpline

public CubicSpline()

Method Detail

setData

public void setData(double[] x,
                    double[] y,
                    int n,
                    int step)

Description copied from interface: AbstractSpline

Sets spline data

Specified by:

setData in interface AbstractSpline

Parameters:

x - normalized x values

y - normalized y values

n - point count

step - step count

getLines

public Point2D[] getLines()

Description copied from interface: AbstractSpline

Gets spline line array

Specified by:

getLines in interface AbstractSpline

Returns:

spline line array

interpolateYAt

public double[] interpolateYAt(double x)

Description copied from interface: AbstractSpline

Interpolates x value and returns the Y values array

Specified by:

interpolateYAt in interface AbstractSpline

Parameters:

x - x value, where to interpolate

Returns:

array of y values

isYValueInRange

public boolean isYValueInRange(double y)

isXValueInRange

public boolean isXValueInRange(double x)

getOrientation

public Orientation getOrientation()

setOrientation

public void setOrientation(Orientation orientation)

clone

public AbstractSpline clone()
                     throws java.lang.CloneNotSupportedException

Description copied from interface: AbstractSpline

Clones the object

Specified by:

clone in interface AbstractSpline

Overrides:

clone in class java.lang.Object

Returns:

object clone (new instance)

Throws:

java.lang.CloneNotSupportedException - exception if not possible to clone