com.jhlabs.image

Class SplineColormap

java.lang.Object

com.jhlabs.image.ArrayColormap

com.jhlabs.image.SplineColormap

All Implemented Interfaces:

Colormap, java.lang.Cloneable

public class SplineColormap
extends ArrayColormap

A Colormap implemented using Catmull-Rom colour splines. The map has a variable number of knots with a minimum of four. The first and last knots give the tangent at the end of the spline, and colours are interpolated from the second to the second-last knots.

Field Summary

Fields inherited from class com.jhlabs.image.ArrayColormap

map

Constructor Summary

Constructors

Constructor and Description
SplineColormap() Construct a SplineColormap.
SplineColormap(int[] xKnots, int[] yKnots) Construct a SplineColormap.

Method Summary

Modifier and Type	Method and Description
void	addKnot(int x, int color) Add a new knot.
int	getKnot(int n) Get a knot color.
void	removeKnot(int n) Remove a knot.
void	setKnot(int n, int color) Set a knot color.
void	setKnotPosition(int n, int x) Set a knot position.

Methods inherited from class com.jhlabs.image.ArrayColormap

clone, getColor, getMap, setColor, setColorInterpolated, setColorRange, setColorRange, setMap

Methods inherited from class java.lang.Object

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

Constructor Detail

SplineColormap

public SplineColormap()

Construct a SplineColormap.

SplineColormap

public SplineColormap(int[] xKnots,
                      int[] yKnots)

Construct a SplineColormap.

Parameters:

xKnots - the knot positions

yKnots - the knot colors

Method Detail

setKnot

public void setKnot(int n,
                    int color)

Set a knot color.

Parameters:

n - the knot index

color - the color

See Also:

getKnot(int)

getKnot

public int getKnot(int n)

Get a knot color.

Parameters:

n - the knot index

Returns:

the knot color

See Also:

setKnot(int, int)

addKnot

public void addKnot(int x,
                    int color)

Add a new knot.

Parameters:

x - the knot position

color - the color

See Also:

removeKnot(int)

removeKnot

public void removeKnot(int n)

Remove a knot.

Parameters:

n - the knot index

See Also:

addKnot(int, int)

setKnotPosition

public void setKnotPosition(int n,
                            int x)

Set a knot position.

Parameters:

n - the knot index

x - the knot position