infovis.visualization
Class ColorVisualization

java.lang.Object
  infovis.visualization.ColorVisualization

All Implemented Interfaces:

EventListener, ChangeListener

Direct Known Subclasses:

CategoricalColor, ExplicitColor, NominalColor, OrderedColor

public abstract class ColorVisualization
extends Object
implements ChangeListener

Interface for Color Visualizations.

Version:

$Revision: 1.13 $

Author:

Jean-Daniel Fekete

Constructor Summary

ColorVisualization(Column column)

Method Summary

static Color	colorComplement(Color c)
static int	computeColor(double r, double g, double b, double a) Convert r,g,b,a float values into an int.
Color	getColor(int row) Returns a
abstract int	getColorValue(int row) Returns the color value omputed for the specified row.
Column	getColumn() Returns the managed Column.
void	setColumn(Column c) Sets the managed column

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.swing.event.ChangeListener

stateChanged

Constructor Detail

ColorVisualization

public ColorVisualization(Column column)

Method Detail

getColumn

public Column getColumn()

Returns the managed Column.

Returns:

the managed Column.

setColumn

public void setColumn(Column c)

Sets the managed column

Parameters:

c - the new column to manage

getColorValue

public abstract int getColorValue(int row)

Returns the color value omputed for the specified row.

Color are coded as a 32bits integers. If the color is coded with red, green, blue and alpha floating point values between 0 and 1, the returned value is: ((((int)(a * 255)) & 0xFF) << 24) | ((((int)(r * 255)) & 0xFF) << 16) | ((((int)(g * 255)) & 0xFF) << 8) | ((((int)(b * 255)) & 0xFF) << 0);

Returns:

the color computed for the specified row.

getColor

public Color getColor(int row)

Returns a

computeColor

public static int computeColor(double r,
                               double g,
                               double b,
                               double a)

Convert r,g,b,a float values into an int.

Parameters:

r - DOCUMENT ME!

g - DOCUMENT ME!

b - DOCUMENT ME!

a - DOCUMENT ME!

Returns:

DOCUMENT ME!

colorComplement

public static Color colorComplement(Color c)