public class Sirkel extends Form {

    private int radius;



    public Sirkel(String farge, int radius) {
        super(farge);
        this.radius = radius;
    }

    @Override
    public String hentFormelAreal() {
        return "PI*r^2";
    }

    @Override
    public int areal() {
        return (int) Math.round( Math.PI*Math.pow(radius, 2) );
    }

    @Override
    public int omkrets() {

        return (int)Math.round(2*Math.PI*radius);
    }

    public int diameter() {
        return radius*2;
    }

    @Override
    public void skrivType() {
        System.out.println("Sirkel");
    }


    public boolean equals(Object obj) {
        if (obj instanceof Sirkel) {
            if (((Sirkel) obj).hentFarge() == hentFarge() &&  ((Sirkel) obj).radius == radius) {
                return true;
            }
        }
        return false;
    }



    @Override
    public String toString() {
        return "Sirkel : "+hentFarge();
    }

    // return (int) Math.round( Math.PI*Math.pow(radius, 2) );
    //return(int)Math.round(2*Math.PI*radius);
    //
}