Spiral.java in programe

Spiral.java

public class Spiral

{

            public static void main(String[] args)

{

        int N         = Integer.parseInt(args[0]);    

        double decay  = Double.parseDouble(args[1]);  

                    double angle  = 360.0 / N;

        double step   = Math.sin(Math.toRadians(angle/2.0));

        Turtle turtle = new Turtle(0.5, 0.0, angle/2.0);

        for (int i = 0; i < 10*N; i++)

{

            step /= decay;

            turtle.goForward(step);

            turtle.turnLeft(angle);

        }

                }

}