Honeycombs: Difference between revisions

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 {{libheader|Icon Programming Library}}
 [http://www.cs.arizona.edu/icon/library/src/procs/printf.icn printf.icn provides formatting]
+=={{header|Java}}==
+<lang java>import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+public class Honeycombs extends JFrame {
+    HoneycombsPanel panel;
+    public static void main(String[] args) {
+        JFrame f = new Honeycombs();
+        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        f.setVisible(true);
+    }
+    public Honeycombs() {
+        Container content = getContentPane();
+        content.setLayout(new BorderLayout());
+        panel = new HoneycombsPanel();
+        content.add(panel, BorderLayout.CENTER);
+        setTitle("Honeycombs");
+        setResizable(false);
+        pack();
+        setLocationRelativeTo(null);
+    }
+}
+class HoneycombsPanel extends JPanel {
+    class Hexagon extends Polygon {
+        final Color baseColor = Color.yellow;
+        final Color selectedColor = Color.magenta;
+        final char letter;
+        private boolean hasBeenSelected = false;
+        Hexagon(int x, int y, int halfWidth, char c) {
+            letter = c;
+            for (int i = 0; i < 6; i++)
+                addPoint((int) (x + halfWidth * Math.cos(i * Math.PI / 3)),
+                         (int) (y + halfWidth * Math.sin(i * Math.PI / 3)));
+            getBounds();
+        }
+        void setSelected() {
+            hasBeenSelected = true;
+        }
+        void draw(Graphics2D g) {
+            g.setColor(hasBeenSelected ? selectedColor : baseColor);
+            g.fillPolygon(this);
+            g.setStroke(new BasicStroke(3));
+            g.setColor(Color.black);
+            g.drawPolygon(this);
+            g.setColor(hasBeenSelected ? Color.black : Color.red);
+            drawCenteredString(String.valueOf(letter), g);
+        }
+        void drawCenteredString(String s, Graphics2D g) {
+            g.setFont(new Font("SansSerif", Font.BOLD, 30));
+            FontMetrics fm = g.getFontMetrics();
+            int asc = fm.getAscent();
+            int dec = fm.getDescent();
+            int x = bounds.x + (bounds.width - fm.stringWidth(s)) / 2;
+            int y = bounds.y + (asc + (bounds.height - (asc + dec)) / 2);
+            g.drawString(s, x, y);
+        }
+    }
+    Hexagon[] comb;
+    public HoneycombsPanel() {
+        setPreferredSize(new Dimension(600, 500));
+        setBackground(Color.white);
+        setFocusable(true);
+        addMouseListener(new MouseAdapter() {
+            @Override
+            public void mousePressed(MouseEvent e) {
+                for (Hexagon hex : comb)
+                    if (hex.contains(e.getX(), e.getY())) {
+                        hex.setSelected();
+                        break;
+                    }
+                repaint();
+            }
+        });
+        addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent e) {
+                for (Hexagon hex : comb)
+                    if (hex.letter == Character.toUpperCase(e.getKeyChar())) {
+                        hex.setSelected();
+                        break;
+                    }
+                repaint();
+            }
+        });
+        char[] letters = "LRDGITPFBVOKANUYCESM".toCharArray();
+        comb = new Hexagon[20];
+        int x1 = 150, y1 = 100, x2 = 225, y2 = 143, w = 150, h = 87;
+        for (int i = 0; i < comb.length; i++) {
+            int x = i < 12 ? x1 + (i % 3) * w : x2 + (i % 2) * w;
+            int y = i < 12 ? y1 + (i / 3) * h : y2 + ((i - 12) / 2) * h;
+            comb[i] = new Hexagon(x, y, w / 3, letters[i]);
+        }
+        requestFocus();
+    }
+    @Override
+    public void paintComponent(Graphics gg) {
+        super.paintComponent(gg);
+        Graphics2D g = (Graphics2D) gg;
+        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+        for (Hexagon hex : comb)
+            hex.draw(g);
+    }
+}</lang>
 =={{header|Perl}}==