Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.image.BufferedImage;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class Main {
    public static void main(String[] args) {
        final int width = 512;
        final int height = 512;
        BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
        Graphics g = img.getGraphics();
        g.setColor(Color.black);
        g.fillRect(0, 0, width, height);
        g.setColor(Color.white);
        final double A = 8;
        final double B = 0.5;
        final double N = 4;
        final double scale = 128;
        final double zoom = 50;
        final double step = 1 / scale;
        Point last = null;
        final Point origin = new Point(width / 2, height / 2);

        for (double t = 0; t <= 2 * Math.PI; t += step) {
            final double r = zoom * polarFunction(t, A, B, N);
            final int x = (int) Math.round(r * Math.cos(t));
            final int y = (int) Math.round(r * Math.sin(t));
            Point next = new Point(x, y);
            if (last != null) {
                g.drawLine(origin.x + last.x, origin.y + last.y, origin.x + next.x, origin.y + next.y);
            }
            last = next;
        }

        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(new JLabel(new ImageIcon(img)));
        frame.pack();
        frame.setVisible(true);
    }

    public static double polarFunction(double t, double A, double B, double N) {
        return A / Math.log(B * Math.tan(t / (2 * N)));
    }
}