90 lines
2.4 KiB
Java
90 lines
2.4 KiB
Java
import java.awt.*;
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import java.awt.event.*;
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import java.util.*;
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import javax.swing.*;
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import javax.swing.Timer;
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public class ChaosGame extends JPanel {
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static class ColoredPoint extends Point {
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int colorIndex;
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ColoredPoint(int x, int y, int idx) {
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super(x, y);
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colorIndex = idx;
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}
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}
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Stack<ColoredPoint> stack = new Stack<>();
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Point[] points = new Point[3];
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Color[] colors = {Color.red, Color.green, Color.blue};
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Random r = new Random();
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public ChaosGame() {
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Dimension dim = new Dimension(640, 640);
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setPreferredSize(dim);
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setBackground(Color.white);
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int margin = 60;
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int size = dim.width - 2 * margin;
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points[0] = new Point(dim.width / 2, margin);
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points[1] = new Point(margin, size);
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points[2] = new Point(margin + size, size);
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stack.push(new ColoredPoint(-1, -1, 0));
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new Timer(10, (ActionEvent e) -> {
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if (stack.size() < 50_000) {
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for (int i = 0; i < 1000; i++)
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addPoint();
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repaint();
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}
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}).start();
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}
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private void addPoint() {
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try {
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int colorIndex = r.nextInt(3);
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Point p1 = stack.peek();
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Point p2 = points[colorIndex];
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stack.add(halfwayPoint(p1, p2, colorIndex));
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} catch (EmptyStackException e) {
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e.printStackTrace();
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}
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}
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void drawPoints(Graphics2D g) {
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for (ColoredPoint p : stack) {
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g.setColor(colors[p.colorIndex]);
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g.fillOval(p.x, p.y, 1, 1);
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}
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}
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ColoredPoint halfwayPoint(Point a, Point b, int idx) {
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return new ColoredPoint((a.x + b.x) / 2, (a.y + b.y) / 2, idx);
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}
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@Override
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public void paintComponent(Graphics gg) {
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super.paintComponent(gg);
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Graphics2D g = (Graphics2D) gg;
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g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
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RenderingHints.VALUE_ANTIALIAS_ON);
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drawPoints(g);
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}
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public static void main(String[] args) {
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SwingUtilities.invokeLater(() -> {
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JFrame f = new JFrame();
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f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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f.setTitle("Chaos Game");
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f.setResizable(false);
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f.add(new ChaosGame(), BorderLayout.CENTER);
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f.pack();
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f.setLocationRelativeTo(null);
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f.setVisible(true);
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});
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}
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}
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