org.jhotdraw.color

Class QuantizingColorWheelImageProducer

java.lang.Object

java.awt.image.MemoryImageSource

org.jhotdraw.color.AbstractColorWheelImageProducer

org.jhotdraw.color.QuantizingColorWheelImageProducer

All Implemented Interfaces:

java.awt.image.ImageProducer

public class QuantizingColorWheelImageProducer
extends AbstractColorWheelImageProducer

Produces the image of a ColorWheel.

See Also:

JColorWheel

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	alphas Lookup table for alphas.
protected int	angularQuantization
protected float[]	angulars Lookup table for angular component values.
protected int	radialQuantization
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
QuantizingColorWheelImageProducer(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(float[] components)
boolean	needsGeneration()
void	regenerateColorWheel()

Methods inherited from class org.jhotdraw.color.AbstractColorWheelImageProducer

getColorLocation, getRadius, 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.

angularQuantization

protected int angularQuantization

radialQuantization

protected int radialQuantization

Constructor Detail

QuantizingColorWheelImageProducer

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

Creates a new instance.

Method Detail

generateLookupTables

protected void generateLookupTables()

needsGeneration

public boolean needsGeneration()

Overrides:

needsGeneration in class AbstractColorWheelImageProducer

regenerateColorWheel

public void regenerateColorWheel()

Overrides:

regenerateColorWheel in class AbstractColorWheelImageProducer

generateColorWheel

public void generateColorWheel()

Specified by:

generateColorWheel 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