public class Planet {
    private double radie;
    private Point3D position;

    public Planet(double radie) {
        position = new Point3D();
        this.radie = radie;
    }//konstruktor

    public Planet(double radie, Point3D position){
        this.radie = radie;
        this.position =  position;
    }//konstruktor

    public double getRadie() {
        return radie;
    }//getRadie

    public Point3D getPosition() {
        return position;
    }//getPosition

    public void moveTo(Point3D position) {
        this.position = position;
    }//setPosition

    public double computeVolume() {
        return 4* Math.PI*Math.pow(radie, 3) / 3;
    }//computeVolume

    public double computeDistance(Planet other) {
        return position.computeDistance(other.position);
    }//computeDistance

} //Planet