## Mirror diagonal method

See Diagonal Mirror Questions for what diagonal mirroring means

```  /**
* Method to mirror around a diagonal line from width-1,0 to 0,height-1
*/
public void mirrorDiagonal()
{
Pixel leftPixel = null; // left of diagonal line
Pixel rightPixel = null; // right of diagonal line
int width = getWidth(); // the width of this picture
int height = getHeight(); // the height of this picture

// if the width is greater than the height reset width to height
if (width > height)
width = height;
// else if the height is greater than the width use width for height
else if (height > width)
height = width;

// get last x and y for the mirroring
int lastX = width - 1; // last valid x index
int maxX = lastX;
int lastY = height - 1; // last valid y index

// loop through the rows (from 0 to max Y)
for (int y = 0; y < lastY; y++,maxX--)
{
// loop through the columns
for (int x = 0; x < maxX; x++)
{
leftPixel = getPixel(x,y);
rightPixel = getPixel((lastX - y), (lastY - x));
rightPixel.setColor(leftPixel.getColor());
}
}
}```