ShuffleOverlay

java.lang.Object
- steganography.image.overlays.SequenceOverlay
- - steganography.image.overlays.ShuffleOverlay

All Implemented Interfaces:

PixelCoordinateOverlay

Direct Known Subclasses:

RemoveTransparentShuffleOverlay, TableOverlay
```
public class ShuffleOverlay
extends SequenceOverlay
```
This class returns Pixels of the underlying BufferedImage in a random order determined by the seed that is given to its constructor

Field Summary

Fields
Modifier and Type Field Description

protected java.util.Random random
- Fields inherited from class steganography.image.overlays.SequenceOverlay
  bufferedImage, currentPosition, currentX, currentY, pixelOrder

Constructor Summary

Constructors
Constructor	Description
`ShuffleOverlay(java.awt.image.BufferedImage bufferedImage, long seed)`	Creates a ShuffleOverlay that returns Pixels of the underlying BufferedImage in a random order determined by the seed that is given to its constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`createOverlay()`	Creates the overlay as an independent method to address pixels without using BufferedImages coordinates.
`protected void`	`initOverlay()`	Initialization of the overlay.
`protected void`	`shufflePixelOrder()`	Randomization of the already created overlay.

Methods inherited from class steganography.image.overlays.SequenceOverlay
available, next, setPixel, typeAccepted

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - random
```
protected java.util.Random random
```
- Constructor Detail
  - ShuffleOverlay
```
public ShuffleOverlay(java.awt.image.BufferedImage bufferedImage,
                      long seed)
               throws UnsupportedImageTypeException
```
    Creates a ShuffleOverlay that returns Pixels of the underlying BufferedImage in a random order determined by the seed that is given to its constructor.
    
    Parameters:
    
    bufferedImage - BufferedImage to represent the pixels of
    
    seed - Long to be used to affect the randomization of pixelorder.
    
    Throws:
    
    UnsupportedImageTypeException - if the images type is not supported by this overlay
- Method Detail
  - createOverlay
```
protected void createOverlay()
```
    Creates the overlay as an independent method to address pixels without using BufferedImages coordinates. Uses two protected methods to separate the creation of the overlay from its randomization.
    
    Subclasses should only overwrite this method to alter this separation.
    
    Overrides:
    
    createOverlay in class SequenceOverlay
  - initOverlay
```
protected void initOverlay()
```
    Initialization of the overlay. This process is separate from the randomization of the overlay.
  - shufflePixelOrder
```
protected void shufflePixelOrder()
```
    Randomization of the already created overlay.