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Author: BurntPizza (posted 2014-06-12 02:41:52, viewed 131 times)

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import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Worley {
   
   public static Image worley(int width, int height, List<Point> seeds) {
      BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
      
      float maxDist = -1;
      
      for (int y = 0; y < height; y++)
         for (int x = 0; x < width; x++) {
            float dist = closest(seeds, x, y);
            dist = Math.min(dist, 255);
            if (maxDist < dist) {
               maxDist = dist;
            }
         }
      
      float scale = 255 / maxDist;
      
      for (int y = 0; y < height; y++)
         for (int x = 0; x < width; x++) {
            float dist = closest(seeds, x, y);
            dist = Math.min(dist * scale, 255);
            //dist *= scale;
            int color = (int) dist;
            color = color << 16 | color << 8 | color;
            img.setRGB(x, y, color);
         }
      
      return img;
   }
   
   private static float closest(List<Point> list, int x, int y) {
      Point closest = list.get(0);
      float closestDist = Float.MAX_VALUE;
      for (Point p : list) {
         float dx = p.x - x;
         float dy = p.y - y;
         dx *= dx;
         dy *= dy;
         float dist = dx + dy;
         if (dist < closestDist) {
            closestDist = dist;
            closest = p;
         }
      }
      return (float) Math.hypot(closest.x - x, closest.y - y);
   }
   
   @SuppressWarnings("serial")
   public static void main(String[] a) {
      int w = 400, h = 400;
      
      List<Point> l = new ArrayList<Point>();
      
      for (int i = 0; i < 300; i++) {
         l.add(new Point((float) Math.random() * w, (float) Math.random() * h));
      }
      
      final Image i = worley(w, h, l);
      
      JFrame j = new JFrame();
      j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      j.setLocationRelativeTo(null);
      j.add(new JPanel() {
         {
            setSize(i.getWidth(null), i.getHeight(null));
            setPreferredSize(getSize());
         }
         
         @Override
         public void paint(Graphics g) {
            g.drawImage(i, 0, 0, null);
         }
      });
      j.pack();
      j.setVisible(true);
   }
}





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