Package org.hortonmachine.gears.utils.colors

Class ColorInterpolator

java.lang.Object

org.hortonmachine.gears.utils.colors.ColorInterpolator

public class ColorInterpolator
extends Object

A color interpolation helper class.

Author:

Andrea Antonello (www.hydrologis.com)

Constructor Summary

Constructors

Constructor	Description
ColorInterpolator(Color[] colors, double[] values, int alpha)
ColorInterpolator(String colorTableName, double min, double max, Integer alpha)

Method Summary

Modifier and Type	Method	Description
Color	getColorFor(double value)	Get the color of the defined table by its value.
static Color	interpolateColor(Color color1, Color color2, float fraction)	Interpolate a color at a given fraction between 0 and 1.

Methods inherited from class java.lang.Object

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

Constructor Detail

ColorInterpolator

public ColorInterpolator(Color[] colors,
                         double[] values,
                         int alpha)

ColorInterpolator

public ColorInterpolator(String colorTableName,
                         double min,
                         double max,
                         Integer alpha)

Method Detail

getColorFor

public Color getColorFor(double value)

Get the color of the defined table by its value.

Parameters:

value - the value.

Returns:

the interpolated color.

interpolateColor

public static Color interpolateColor(Color color1,
                                     Color color2,
                                     float fraction)

Interpolate a color at a given fraction between 0 and 1.

Parameters:

color1 - start color.

color2 - end color.

fraction - the fraction to interpolate.

Returns:

the new color.