OFImage

    /**
 * Write a description of class OFImage here.
 *
 * @author Daffa Tristan Firdaus
 * @version 7 Desember 2020
 */
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;

public class OFImage extends BufferedImage
{
    public OFImage(BufferedImage image)
    {
        super(image.getColorModel(), image.copyData(null), image.isAlphaPremultiplied(), null);
    }

    public OFImage(int width, int height)
    {
        super(width, height, TYPE_INT_RGB);
    }

    public void setPixel(int x, int y, Color warna)
    {
        int pixel = warna.getRGB();
        setRGB(x, y, pixel);
    }

    public Color getPixel(int x, int y)
    {
        int pixel = getRGB(x, y);
        return new Color(pixel);
    }

    public void darker() {
        int height = getHeight();
        int width = getWidth();
        for (int i = 0; i < height; i++)
        {
            for (int j = 0; j < width; j++)
            {
                setPixel(j, i, getPixel(j, i).darker());
            }
        }
    }

    public void lighter()
    {
        int height = getHeight();
        int width = getWidth();
        for (int i = 0; i < height; i++)
        {
            for (int j = 0; j < width; j++)
            {
                setPixel(j, i, getPixel(j, i).brighter());
            }
        }
    }

    public void threshold()
    {
        int height = getHeight();
        int width = getWidth();
        for (int i = 0; i < height; i++)
        {
            for (int j = 0; j < width; j++)
            {
                Color pixel = getPixel(j, i);
                int brightness = (pixel.getRed() + pixel.getBlue() + pixel.getGreen()) / 3;
                if (brightness <= 85)
                {
                    setPixel(j, i, Color.BLACK);
                }
                else if (brightness <= 85 * 2)
                {
                    setPixel(j, i, Color.GRAY);
                }
                else
                {
                    setPixel(j, i, Color.WHITE);
                }
            }
        }
    }
}