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package javakoe;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsEnvironment;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import javax.swing.JPanel;

/**
 *
 *
 */
public class MyPanel extends JPanel {
        private BufferedImage drawing = null;

    public MyPanel(){
        drawing = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().createCompatibleImage(800, 600);

        for (int y=0;y<drawing.getHeight();y++){
            for (int x=0;x<drawing.getWidth();x++){
                drawing.setRGB(x, y, 255 << 16 | 255 << 8 | 255);
            }
        }

    }
        public void clear(){
        for (int y=0;y<drawing.getHeight();y++){
            for (int x=0;x<drawing.getWidth();x++){
                drawing.setRGB(x, y, 255 << 16 | 255 << 8 | 255);
            }
        }
        repaint();
    }

    @Override
    public boolean isOpaque(){return true;}

    // Draws points into the panel
    public void drawPoint(int x, int y, int r, int g, int b){
        int color = (r << 16) | (g << 8) | b;
        if (x>=0 && y >= 0 && x < 800 && y < 600 ){
            drawing.setRGB(x, y, color);
        }
        // re-draw the panel (using the above my_x, my_y)
        repaint();
    }




    // Draws points into the panel
    public void drawPoint(int x, int y, Color color){
        if (x>=0 && y >= 0 && x < 800 && y < 600 ){
            drawing.setRGB(x, y, color.getRGB());

        }
        // re-draw the panel (using the above my_x, my_y)
        repaint();
    }
       protected void paintComponent(Graphics g){

        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        Color original = g2.getColor();

        //g2.drawRect(x, y, 10, 10);
        g2.drawImage(drawing, null, this);
        g2.setColor(original);


    }



}