Another update from ingydotnet^djgoku

Task/Voronoi-diagram/Java/voronoi-diagram.java

@@ -0,0 +1,77 @@
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.geom.Ellipse2D;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.util.Random;
+
+import javax.imageio.ImageIO;
+import javax.swing.JFrame;
+
+public class Voronoi extends JFrame {
+	static double p = 3;
+	static BufferedImage I;
+	static int px[], py[], color[], cells = 100, size = 1000;
+
+	public Voronoi() {
+		super("Voronoi Diagram");
+		setBounds(0, 0, size, size);
+		setDefaultCloseOperation(EXIT_ON_CLOSE);
+		int n = 0;
+		Random rand = new Random();
+		I = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
+		px = new int[cells];
+		py = new int[cells];
+		color = new int[cells];
+		for (int i = 0; i < cells; i++) {
+			px[i] = rand.nextInt(size);
+			py[i] = rand.nextInt(size);
+			color[i] = rand.nextInt(16777215);
+
+		}
+		for (int x = 0; x < size; x++) {
+			for (int y = 0; y < size; y++) {
+				n = 0;
+				for (byte i = 0; i < cells; i++) {
+					if (distance(px[i], x, py[i], y) < distance(px[n], x, py[n], y)) {
+						n = i;
+
+					}
+				}
+				I.setRGB(x, y, color[n]);
+
+			}
+		}
+
+		Graphics2D g = I.createGraphics();
+		g.setColor(Color.BLACK);
+		for (int i = 0; i < cells; i++) {
+			g.fill(new Ellipse2D .Double(px[i] - 2.5, py[i] - 2.5, 5, 5));
+		}
+
+		try {
+			ImageIO.write(I, "png", new File("voronoi.png"));
+		} catch (IOException e) {
+
+		}
+
+	}
+
+	public void paint(Graphics g) {
+		g.drawImage(I, 0, 0, this);
+	}
+
+	static double distance(int x1, int x2, int y1, int y2) {
+		double d;
+	    d = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2)); // Euclidian
+	//  d = Math.abs(x1 - x2) + Math.abs(y1 - y2); // Manhattan
+	//  d = Math.pow(Math.pow(Math.abs(x1 - x2), p) + Math.pow(Math.abs(y1 - y2), p), (1 / p)); // Minkovski
+	  	return d;
+	}
+
+	public static void main(String[] args) {
+		new Voronoi().setVisible(true);
+	}
+}