org.jhotdraw.color

Class PolarColorWheelImageProducer

java.lang.Object

java.awt.image.MemoryImageSource

org.jhotdraw.color.AbstractColorWheelImageProducer

org.jhotdraw.color.PolarColorWheelImageProducer

All Implemented Interfaces:

java.awt.image.ImageProducer

Direct Known Subclasses:

HSLHarmonicColorWheelImageProducer, HSVHarmonicColorWheelImageProducer

public class PolarColorWheelImageProducer
extends AbstractColorWheelImageProducer

Produces the image of a JColorWheel by interpreting two components of a ColorSpace as polar coordinates (angle and radius).

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	alphas Lookup table for alphas.
protected float[]	angulars Lookup table for angular component values.
protected float[]	radials Lookup table for radial component values.

Fields inherited from class org.jhotdraw.color.AbstractColorWheelImageProducer

angularIndex, colorSpace, h, isLookupValid, isPixelsValid, pixels, radialIndex, verticalIndex, verticalValue, w

Constructor Summary

Constructors

Constructor and Description
PolarColorWheelImageProducer(java.awt.color.ColorSpace sys, int w, int h) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
void	generateColorWheel()
protected void	generateLookupTables()
float[]	getColorAt(int x, int y)
java.awt.Point	getColorLocation(java.awt.Color c)
java.awt.Point	getColorLocation(float[] components)

Methods inherited from class org.jhotdraw.color.AbstractColorWheelImageProducer

getRadius, needsGeneration, regenerateColorWheel, setAngularComponentIndex, setRadialComponentIndex, setVerticalComponentIndex, setVerticalValue

Methods inherited from class java.awt.image.MemoryImageSource

addConsumer, isConsumer, newPixels, newPixels, newPixels, newPixels, newPixels, removeConsumer, requestTopDownLeftRightResend, setAnimated, setFullBufferUpdates, startProduction

Methods inherited from class java.lang.Object

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

Field Detail

angulars

protected float[] angulars

Lookup table for angular component values.

radials

protected float[] radials

Lookup table for radial component values.

alphas

protected int[] alphas

Lookup table for alphas. The alpha value is used for antialiasing the color wheel.

Constructor Detail

PolarColorWheelImageProducer

public PolarColorWheelImageProducer(java.awt.color.ColorSpace sys,
                                    int w,
                                    int h)

Creates a new instance.

Method Detail

generateLookupTables

protected void generateLookupTables()

generateColorWheel

public void generateColorWheel()

Specified by:

generateColorWheel in class AbstractColorWheelImageProducer

getColorLocation

public java.awt.Point getColorLocation(java.awt.Color c)

Overrides:

getColorLocation in class AbstractColorWheelImageProducer

getColorLocation

public java.awt.Point getColorLocation(float[] components)

Specified by:

getColorLocation in class AbstractColorWheelImageProducer

getColorAt

public float[] getColorAt(int x,
                          int y)

Specified by:

getColorAt in class AbstractColorWheelImageProducer