Initial data commit

Task/Polyspiral/Java/polyspiral.java

@@ -0,0 +1,62 @@
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import javax.swing.*;
+
+public class PolySpiral extends JPanel {
+    double inc = 0;
+
+    public PolySpiral() {
+        setPreferredSize(new Dimension(640, 640));
+        setBackground(Color.white);
+
+        new Timer(40, (ActionEvent e) -> {
+            inc = (inc + 0.05) % 360;
+            repaint();
+        }).start();
+    }
+
+    void drawSpiral(Graphics2D g, int len, double angleIncrement) {
+
+        double x1 = getWidth() / 2;
+        double y1 = getHeight() / 2;
+        double angle = angleIncrement;
+
+        for (int i = 0; i < 150; i++) {
+
+            g.setColor(Color.getHSBColor(i / 150f, 1.0f, 1.0f));
+
+            double x2 = x1 + Math.cos(angle) * len;
+            double y2 = y1 - Math.sin(angle) * len;
+            g.drawLine((int) x1, (int) y1, (int) x2, (int) y2);
+            x1 = x2;
+            y1 = y2;
+
+            len += 3;
+
+            angle = (angle + angleIncrement) % (Math.PI * 2);
+        }
+    }
+
+    @Override
+    public void paintComponent(Graphics gg) {
+        super.paintComponent(gg);
+        Graphics2D g = (Graphics2D) gg;
+        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+
+        drawSpiral(g, 5, Math.toRadians(inc));
+    }
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(() -> {
+            JFrame f = new JFrame();
+            f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            f.setTitle("PolySpiral");
+            f.setResizable(true);
+            f.add(new PolySpiral(), BorderLayout.CENTER);
+            f.pack();
+            f.setLocationRelativeTo(null);
+            f.setVisible(true);
+        });
+    }
+}