com.threerings.media.effects
Class FadeEffect

java.lang.Object
  com.threerings.media.effects.FadeEffect

public class FadeEffect
extends Object

Handles the math and timing of doing a fade effect in a sprite or animation.

Field Summary

protected float	_alpha The current alpha of the image.
protected Composite	_comp The composite used to render the image with the current alpha.
protected boolean	_finished True when we're finished.
protected long	_initStamp Time zero.
protected Composite	_ocomp The composite in effect outside our faded render.
protected float	_startAlpha The starting alpha.
protected float	_step The alpha step per millisecond.
protected float	_target The target alpha.

Constructor Summary

FadeEffect(float alpha, float step, float target)

Method Summary

void	afterPaint(Graphics2D gfx)
void	beforePaint(Graphics2D gfx)
boolean	finished()
float	getAlpha()
void	init(long tickStamp)
boolean	tick(long tickStamp)

Methods inherited from class java.lang.Object

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

Field Detail

_comp

protected Composite _comp

The composite used to render the image with the current alpha.

_ocomp

protected Composite _ocomp

The composite in effect outside our faded render.

_alpha

protected float _alpha

The current alpha of the image.

_target

protected float _target

The target alpha.

_step

protected float _step

The alpha step per millisecond.

_startAlpha

protected float _startAlpha

The starting alpha.

_initStamp

protected long _initStamp

Time zero.

_finished

protected boolean _finished

True when we're finished.

Constructor Detail

FadeEffect

public FadeEffect(float alpha,
                  float step,
                  float target)

Method Detail

init

public void init(long tickStamp)

finished

public boolean finished()

getAlpha

public float getAlpha()

tick

public boolean tick(long tickStamp)

beforePaint

public void beforePaint(Graphics2D gfx)

afterPaint

public void afterPaint(Graphics2D gfx)