Data commit

Task/Chaos-game/Java/chaos-game.java

@@ -0,0 +1,89 @@
+import java.awt.*;
+import java.awt.event.*;
+import java.util.*;
+import javax.swing.*;
+import javax.swing.Timer;
+
+public class ChaosGame extends JPanel {
+    static class ColoredPoint extends Point {
+        int colorIndex;
+
+        ColoredPoint(int x, int y, int idx) {
+            super(x, y);
+            colorIndex = idx;
+        }
+    }
+
+    Stack<ColoredPoint> stack = new Stack<>();
+    Point[] points = new Point[3];
+    Color[] colors = {Color.red, Color.green, Color.blue};
+    Random r = new Random();
+
+    public ChaosGame() {
+        Dimension dim = new Dimension(640, 640);
+        setPreferredSize(dim);
+        setBackground(Color.white);
+
+        int margin = 60;
+        int size = dim.width - 2 * margin;
+
+        points[0] = new Point(dim.width / 2, margin);
+        points[1] = new Point(margin, size);
+        points[2] = new Point(margin + size, size);
+
+        stack.push(new ColoredPoint(-1, -1, 0));
+
+        new Timer(10, (ActionEvent e) -> {
+            if (stack.size() < 50_000) {
+                for (int i = 0; i < 1000; i++)
+                    addPoint();
+                repaint();
+            }
+        }).start();
+    }
+
+    private void addPoint() {
+        try {
+            int colorIndex = r.nextInt(3);
+            Point p1 = stack.peek();
+            Point p2 = points[colorIndex];
+            stack.add(halfwayPoint(p1, p2, colorIndex));
+        } catch (EmptyStackException e) {
+            e.printStackTrace();
+        }
+    }
+
+    void drawPoints(Graphics2D g) {
+        for (ColoredPoint p : stack) {
+            g.setColor(colors[p.colorIndex]);
+            g.fillOval(p.x, p.y, 1, 1);
+        }
+    }
+
+    ColoredPoint halfwayPoint(Point a, Point b, int idx) {
+        return new ColoredPoint((a.x + b.x) / 2, (a.y + b.y) / 2, idx);
+    }
+
+    @Override
+    public void paintComponent(Graphics gg) {
+        super.paintComponent(gg);
+        Graphics2D g = (Graphics2D) gg;
+        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+
+        drawPoints(g);
+    }
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(() -> {
+            JFrame f = new JFrame();
+            f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            f.setTitle("Chaos Game");
+            f.setResizable(false);
+            f.add(new ChaosGame(), BorderLayout.CENTER);
+            f.pack();
+            f.setLocationRelativeTo(null);
+            f.setVisible(true);
+        });
+    }
+}