LACS09_TwoBodySimG.java

/**
TwoBodySimG.java    MrG 2012.0621  (work in progress)
purpose:    simulate a binary star system, nbody simulation, n=2, with G!
required files: TwoBodySimG.java            main class
        TwoBodyG.java           derived class
        BodyG.java          nbody class, n=1
        Vector.java         adt class
        StdDraw.java            graphics class
translator: javac TwoBodySim.java
interpreter:    java TwoBodySim
*/
public class TwoBodySimG
{
    public static void main(String[] args)
    {
        double size= 5.0e10;

        double rx1 = 0.0e00; //meters
        double ry1 = 4.5e10;
        double vx1 = 1.0e04; //meters/sec
        double vy1 = 0.0e00;
        double m1 =  1.5e30; //kilograms
        Vector r1 = new Vector(rx1,ry1);
        Vector v1 = new Vector(vx1,vy1);
        BodyG star1 = new BodyG(r1,v1,m1);

        double rx2 = 0.0e00;
        double ry2 = -4.5e10;
        double vx2 = -1.0e04;
        double vy2 = 0.0e00;
        double m2 =  1.5e30;
        Vector r2 = new Vector(rx2,ry2);
        Vector v2 = new Vector(vx2,vy2);
        BodyG star2 = new BodyG(r2,v2,m2);

        StdDraw.setPenRadius(.03);
        TwoBodyG binary = new TwoBodyG(size, star1, star2);
        while(true)
        {
            StdDraw.clear();
            binary.move(25000);
            binary.draw();
            StdDraw.show(50);
        }
    }
}