APL/Fun/TestGraphique/FunPanel.java

import javax.swing.JPanel;
import java.awt.*;

public class FunPanel extends JPanel {
    public static double table = 50;
    public static int limit = 30;

    public FunPanel() {
        super();
    }

    @Override
    protected void paintComponent(Graphics g) {
        Graphics gg = g.create();

        if (this.isOpaque()) {
            gg.setColor(getBackground());
            gg.fillRect(this.getX(), this.getY(), getWidth(), getHeight());
        }

        double size = (double)(getWidth() > getHeight() ? getHeight() : getWidth()) / 2.5d;

        gg.setColor(Color.BLACK);
        for (double i = 0; i < limit; i++) {
            double theta = (i / (double)limit) * Math.PI * 2;

            gg.fillOval((int)(Math.cos(theta) * size) + getWidth() / 2, (int)(Math.sin(theta) * size) + getHeight() / 2, 6, 6);
            
            for (double j = 0; j < limit; j++) {
                double theta2 = (table * j / (double)limit) * Math.PI * 2;
                
                int x1 = (int)(Math.cos(theta) * size) + getWidth() / 2;
                int x2 = (int)(Math.cos(theta2) * size) + getWidth() / 2;

                int y1 = (int)(Math.sin(theta) * size) + getHeight() / 2;
                int y2 = (int)(Math.sin(theta2) * size) + getHeight() / 2;
                
                gg.drawLine(x1 + 3, y1 + 3, x2 + 3, y2 + 3);
            }
        }
    }
}