Week11 Mandelbrot/src/fractals/Mandelbrot.java


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package fractals;

/**
 * An example of the use of our pixel drawing framework
 * @author Sjaak Smetsers
 * @version 1.0, 14-03-2013
 */
public class Mandelbrot {
    
    public Mandelbrot() {
        MainWindow fractal_win = new MainWindow ();
    }
    
    public static void main(String args[]) {    	       
        Mandelbrot mandelbrot = new Mandelbrot();
    }
    
    public static int mandelNumber(double x, double y, int repetitions) {
        double x_n = x, y_n = y;
        int n = 0;
        
        while (x_n * x_n + y_n * y_n <= 4 && n <= repetitions) {
            double new_x_n = x_n * x_n - y_n * y_n + x;
            y_n = 2 * x_n * y_n + y;
            x_n = new_x_n;
            n++;
        }
        
        return n;
    }

}