/**
 * Mandelbrot set in ASCII art.
 * 
 * @author (Stefan Edelkamp) 
 * @version (2013)
 */
public class Mandelbrot
{
    /**
     * Computes and prints Mandelbrot fractal on screen
     *  
     */ 
    public void fractal() {
      int k = 2; 
      double y=-16; // x,y are coordinates
      String magic = new String(" .:-;!/>)|iIHO*+"); 
      while (y++<15) {     // r,i are updated
        String row = new String(); 
        for (double x=0;x<84;x++) { 
          row = row + magic.charAt(k&15); 
          k = 0;
          double imag = 0.0;
          double real = 0.0;
          double j;
          do {
            j = real*real - imag*imag -2 + x/25.0;
            imag = 2*real*imag + y/10;
            real = j;
          } while(j*j+imag*imag<11 && k++<111);
        }
        System.out.println(row);
       }
    }    
}