jjil.algorithm
Class RgbStretch

java.lang.Object
  jjil.core.PipelineStage
      jjil.algorithm.RgbStretch

public class RgbStretch
extends PipelineStage

Stretches a color (RgbImage) to a given size. Each band is shrunk independently. The output image must be greater than or equal to the size of the input.

Author:

webb

Constructor Summary

RgbStretch(int cWidth, int cHeight)
Creates a new instance of RgbStretch.

Method Summary

int	getHeight() Gets current target height
int	getWidth() Gets current target width
void	push(Image image) Process an image.
void	setHeight(int cHeight) Changes target height
void	setWidth(int cWidth) Changes target width
java.lang.String	toString() Return a string describing the stretching operation.

Methods inherited from class jjil.core.PipelineStage

getFront, isEmpty

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RgbStretch

public RgbStretch(int cWidth,
                  int cHeight)
           throws Error

Creates a new instance of RgbStretch.

Parameters:

cWidth - new image width

cHeight - new image height

Throws:

Error - if either is less than or equal to zero.

Method Detail

getHeight

public int getHeight()

Gets current target height

Returns:

current height

getWidth

public int getWidth()

Gets current target width

Returns:

current width

push

public void push(Image image)
          throws Error

Process an image.

Specified by:

push in class PipelineStage

Parameters:

image - the input RgbImage.

Throws:

Error - if the input is not an RgbImage, or is smaller than the target image either horizontally or vertically.

setHeight

public void setHeight(int cHeight)
               throws Error

Changes target height

Parameters:

cHeight - the new target height.

Throws:

Error - if height is not positive

setWidth

public void setWidth(int cWidth)
              throws Error

Changes target width

Parameters:

cWidth - the new target width.

Throws:

Error - if height is not positive

toString

public java.lang.String toString()

Return a string describing the stretching operation.

Overrides:

toString in class java.lang.Object

Returns:

the string describing the stretching operation.