ej.microui.display.transform

Class AbstractTransform

java.lang.Object

ej.microui.display.transform.AbstractTransform

Direct Known Subclasses:

ImageDeformation, ImageFlip, ImageRotation, ImageScale

public abstract class AbstractTransform
extends java.lang.Object

The AbstractTransform class holds a generic context for all kinds of transformations (see sub classes).

Since:

2.0

Constructor Summary

Constructors

Constructor and Description
AbstractTransform()

Method Summary

Modifier and Type	Method and Description
int	getAlpha() Returns the current opacity.
int	getTranslateX() Returns the current x translation.
int	getTranslateY() Returns the current y translation.
boolean	isMirrored() Returns true if vertical mirror is enabled.
void	resetAlpha() Restore the opacity to its default value (GraphicsContext.OPAQUE).
void	resetTranslate() Resets translation ((0,0)).
void	setAlpha(int alpha) Specifiy the global opacity to apply on drawing.
void	setMirror(boolean applyMirror) Apply a vertical mirror on source image before drawing it.
void	translate(int x, int y) Translates the transformation origin with the given vector (x,y).

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractTransform

public AbstractTransform()

Method Detail

setAlpha

public void setAlpha(int alpha)

Specifiy the global opacity to apply on drawing. This opacity is in addition with the opacity encoded in the pixels of the Image to draw.
The default opacity is GraphicsContext.OPAQUE.

Parameters:

alpha - the opacity

resetAlpha

public void resetAlpha()

Restore the opacity to its default value (GraphicsContext.OPAQUE).

getAlpha

public int getAlpha()

Returns the current opacity.

Returns:

the current opacity.

setMirror

public void setMirror(boolean applyMirror)

Apply a vertical mirror on source image before drawing it.

Parameters:

applyMirror - enable or not vertical mirror.

isMirrored

public boolean isMirrored()

Returns true if vertical mirror is enabled.

Returns:

true if vertical mirror is enabled.

translate

public void translate(int x,
                      int y)

Translates the transformation origin with the given vector (x,y). Subsequent rendering operations on a GraphicsContext will be relative to the new origin (in addition of GraphicsContext's translation.

Parameters:

x - the translation for the x coordinate

y - the translation for the y coordinate

resetTranslate

public void resetTranslate()

Resets translation ((0,0)).

getTranslateX

public int getTranslateX()

Returns the current x translation.

Returns:

x the current x translation.

getTranslateY

public int getTranslateY()

Returns the current y translation.

Returns:

y the current y translation.