jjil.algorithm
Class RgbShrink

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

public class RgbShrink
extends PipelineStage

Shrinks a color (RgbImage) to a given size. Each band is shrunk independently. The pixels that each pixel maps to are averaged. There is no between-target-pixel smoothing. The output image must be smaller than or equal to the size of the input.

Author:

webb

Constructor Summary

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

Method Summary

int	getHeight() Gets current target height
int	getWidth() Gets current target width
void	push(Image image) Process an image.
java.lang.String	toString() Return a string describing the shrinking 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

RgbShrink

public RgbShrink(int cWidth,
                 int cHeight)
          throws Error

Creates a new instance of RgbShrink.

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.

toString

public java.lang.String toString()

Return a string describing the shrinking operation.

Overrides:

toString in class java.lang.Object

Returns:

the string describing the shrinking operation.