I don\'t get vertical image at all. how do i write code for flipping image verti

Question

I don't get vertical image at all. how do i write code for flipping image vertically in java? below is my vertical flip code:

package pgrm8;

/**

* Filter that flips the image vertically.

* This class is COMPLETE. Don't change it. But model your other classes (such

* as FlipVerticalFilter) after it.

*/

public class flipVerticalFilter implements Filter

{

public void filter(PixelImage pi)

{

Pixel[][] data = pi.getData();

int width = pi.getWidth();

int mirrorPoint = width / 2;

Pixel leftPixel = null;

Pixel rightPixel = null;

{

for( int y = 0; y < pi.getHeight(); y++ )

{

for( int x = 0; x < mirrorPoint; x++ )

{

leftPixel = getPixel( x, y );

rightPixel = getPixel( width - 1 - x, y );

rightPixel.setColor( leftPixel.getColor() );

}

}

}

Explanation / Answer

/**
* Filter that flips the image vertically.
* This class is COMPLETE. Don't change it. But model your other classes (such
* as FlipVerticalFilter) after it.
*/

public class flipVerticalFilter implements Filter
{
public void filter(PixelImage pi)
{
Pixel[][] data = pi.getData();
int width = pi.getWidth();
int mirrorPoint = width / 2;
Pixel leftPixel = null;
Pixel rightPixel = null;

for( int y = 0; y < pi.getHeight(); y++ )
{
for( int x1 = 0, x2 = width-1; x1 < x2; x1++, x2-- )
{
leftPixel = getPixel( x1, y );
rightPixel = getPixel( x2, y );
//swap the colors
Color temp = leftPixel.getColor();
leftPixel.setColor(rightPixel.getColor());
rightPixel.setColor(temp);
}
}
}
}

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