LACS09_TwoBodySim.java

/**
TwoBodySim.java MrG 2012.0621
purpose:    simulate a binary star system, nbody simulation, n=2, no G
required files: TwoBodySim.java         main class
        TwoBody.java            derived class
        Body.java           nbody class, n=1
        Vector.java         adt class
        StdDraw.java            graphics class
translator: javac TwoBodySim.java
interpreter:    java TwoBodySim
*/
public class TwoBodySim
{
    public static void main(String[] args)
    {
        double size= 5.0e10;

        double rx1 = 0.0e00;
        double ry1 = 4.5e10;
        double vx1 = 1.0e04;
        double vy1 = 0.0e00;
        Vector r1 = new Vector(rx1,ry1);
        Vector v1 = new Vector(vx1,vy1);
        Body star1 = new Body(r1,v1);

        double rx2 = 0.0e00;
        double ry2 = -4.5e10;
        double vx2 = -1.0e04;
        double vy2 = 0.0e00;
        Vector r2 = new Vector(rx2,ry2);
        Vector v2 = new Vector(vx2,vy2);
        Body star2 = new Body(r2,v2);

        TwoBody binary = new TwoBody(size, star1, star2);
        while(true)
        {
            binary.move(25000);
            binary.draw();
            StdDraw.show(50);
        }
    }
}