org.TagCloud

Class ColorInterpolator

java.lang.Object

org.TagCloud.ColorInterpolator

All Implemented Interfaces:

ColorProvider

Direct Known Subclasses:

BlackToWhiteGradient, SampleGradientColors, ShadesOfLightBlue, YellowBrownGradient

public abstract class ColorInterpolator
extends java.lang.Object
implements ColorProvider

This abstract class can interpolate a color from a set of color points based on weight 0 to 1. Extending classed must provide an array with the colors to use in the getColorPoints method.

Constructor Summary

Constructors

Constructor and Description
ColorInterpolator()

Method Summary

Methods

Modifier and Type	Method and Description
java.awt.Color	getColor(float weight, int value) This method returns a color along a multi point color gradiant.
abstract java.awt.Color[]	getColorPoints() The extending class must implement this method and provide an array of colors

Methods inherited from class java.lang.Object

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

Constructor Detail

ColorInterpolator

public ColorInterpolator()

Method Detail

getColorPoints

public abstract java.awt.Color[] getColorPoints()

The extending class must implement this method and provide an array of colors

Returns:

The array of colors between which to interpolate

getColor

public java.awt.Color getColor(float weight,
                      int value)

This method returns a color along a multi point color gradiant. The Gradiant color points are specified by an array of Colors. The Array must have at least 2 color entries. The interpolation uses the weight parameter.

Specified by:

getColor in interface ColorProvider

Parameters:

weight - between 0 and 1

value - ignored

Returns:

The Color in the gradient