Just another update

Task/Brownian-tree/Java/brownian-tree-2.java

@@ -0,0 +1,90 @@
+import java.awt.Point;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+public class BasicBrownianTree {
+
+    private int pixelsLost;
+    private Point p;
+    private Point nextP;
+    private int pixelCount;
+    private int width;
+    private int height;
+    private int color;
+    private BufferedImage img;
+
+    public BasicBrownianTree( int argb, int size, double density ) {
+        pixelsLost = 0;
+        p = new Point();
+        nextP = new Point();
+        width = size;
+        height = size;
+        color = argb;
+        pixelCount = (int) ( width * height * density );
+        img = new BufferedImage( width, height, BufferedImage.TYPE_INT_ARGB );
+    }
+
+    public void generate() {
+        // print text to the console
+        System.out.println( "Drawing " + pixelCount + " pixels" );
+        int background = img.getRGB( 0, 0 );
+        img.setRGB( width / 2, height / 2, color );
+
+        for( int i = 0; i < pixelCount; i++ ) {
+            p.x = (int) ( Math.random() * width );
+            p.y = (int) ( Math.random() * height );
+
+            while ( true ) {
+                int dx = (int) ( Math.random() * 3 ) - 1;
+                int dy = (int) ( Math.random() * 3 ) - 1;
+                nextP.setLocation( p.x + dx, p.y + dy );
+                // handle out-of-bounds
+                if ( nextP.x < 0 || nextP.x >= width || nextP.y < 0
+                        || nextP.y >= height ) {
+                        // increment the number of pixels lost and escape the loop
+                    pixelsLost++;
+                    break;
+                }
+                if ( img.getRGB( nextP.x, nextP.y ) != background ) {
+                    img.setRGB( p.x, p.y, color );
+                    break;
+                }
+                p.setLocation( nextP );
+            }
+            // Print a message every 2%
+            if ( i % ( pixelCount / 50 ) == 0 ) {
+                System.out.println( "Done with " + i + " pixels" );
+            }
+        }
+        // We're done. Let the user know how many pixels were lost
+        System.out.println( "Finished. Pixels lost = " + pixelsLost );
+    }
+
+    public BufferedImage getImage() {
+        return img;
+    }
+
+    public int getWidth() {
+        return width;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
+    public static void main( String[] args ) {
+        // create the new generator
+        BasicBrownianTree generator = new BasicBrownianTree( 0x664444ff, 400, 0.4 );
+        // generate the image
+        generator.generate();
+        try {
+            // save the image to the file "image.png"
+            ImageIO.write( generator.getImage(), "png", new File( "image.png" ) );
+        } catch ( IOException e ) {
+            e.printStackTrace();
+        }
+    }
+}