com.jhlabs.image

Class ArrayColormap

java.lang.Object

com.jhlabs.image.ArrayColormap

All Implemented Interfaces:

Colormap, java.lang.Cloneable

Direct Known Subclasses:

Gradient, SplineColormap

public class ArrayColormap
extends java.lang.Object
implements Colormap, java.lang.Cloneable

A colormap implemented with an array of colors. This corresponds to the IndexColorModel class.

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	map The array of colors.

Constructor Summary

Constructors

Constructor and Description
ArrayColormap() Construct an all-black colormap.
ArrayColormap(int[] map) Construct a colormap with the given map.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
int	getColor(float v) Convert a value in the range 0..1 to an RGB color.
int[]	getMap() Get the array of colors for the colormap.
void	setColor(int index, int color) Set one element of the colormap to a given color.
void	setColorInterpolated(int index, int firstIndex, int lastIndex, int color) Set the color at "index" to "color".
void	setColorRange(int firstIndex, int lastIndex, int color) Set a range of the colormap to a single color.
void	setColorRange(int firstIndex, int lastIndex, int color1, int color2) Set a range of the colormap, interpolating between two colors.
void	setMap(int[] map) Set the array of colors for the colormap.

Methods inherited from class java.lang.Object

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

Field Detail

map

protected int[] map

The array of colors.

Constructor Detail

ArrayColormap

public ArrayColormap()

Construct an all-black colormap.

ArrayColormap

public ArrayColormap(int[] map)

Construct a colormap with the given map.

Parameters:

map - the array of ARGB colors

Method Detail

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

setMap

public void setMap(int[] map)

Set the array of colors for the colormap.

Parameters:

map - the colors

See Also:

getMap()

getMap

public int[] getMap()

Get the array of colors for the colormap.

Returns:

the colors

See Also:

setMap(int[])

getColor

public int getColor(float v)

Convert a value in the range 0..1 to an RGB color.

Specified by:

getColor in interface Colormap

Parameters:

v - a value in the range 0..1

Returns:

an RGB color

See Also:

setColor(int, int)

setColorInterpolated

public void setColorInterpolated(int index,
                                 int firstIndex,
                                 int lastIndex,
                                 int color)

Set the color at "index" to "color". Entries are interpolated linearly from the existing entries at "firstIndex" and "lastIndex" to the new entry. firstIndex < index < lastIndex must hold.

Parameters:

index - the position to set

firstIndex - the position of the first color from which to interpolate

lastIndex - the position of the second color from which to interpolate

color - the color to set

setColorRange

public void setColorRange(int firstIndex,
                          int lastIndex,
                          int color1,
                          int color2)

Set a range of the colormap, interpolating between two colors.

Parameters:

firstIndex - the position of the first color

lastIndex - the position of the second color

color1 - the first color

color2 - the second color

setColorRange

public void setColorRange(int firstIndex,
                          int lastIndex,
                          int color)

Set a range of the colormap to a single color.

Parameters:

firstIndex - the position of the first color

lastIndex - the position of the second color

color - the color

setColor

public void setColor(int index,
                     int color)

Set one element of the colormap to a given color.

Parameters:

index - the position of the color

color - the color

See Also:

getColor(float)