import java.awt.Color;

/**
 * An image filter to mirror (flip) the image horizontally.
 *
 * @author Gede
 * @version (10/12/2018)
 */
public class FlipVerticalFilter extends Filter
{
    /**
     * Constructor for objects of class FlipVerticalFilter.
     * @param name The name of the filter.
     */
    public FlipVerticalFilter(String name)
    {
        super(name);
    }

    /**
     * Apply this filter to an image.
     *
     * @param  image  The image to be changed by this filter.
     */
    public void apply(OFImage image)
    {
        int height = image.getHeight();
        int width = image.getWidth();
        for(int y = 0; y < height; y++) {
            for(int x = 0; x < width / 2; x++) {
                Color left = image.getPixel(x, y);
                image.setPixel(x, y, image.getPixel(width - 1 - x, y));
                image.setPixel(width - 1 - x, y, left);
            }
        }
    }
}