package introduction;

/**
 * Παρουσιάζει την βασική δομή της κλάσης υπακούοντας στους κανόνες της ενσωμάτωσης
 * @author Lefteris Moussiades
 */
public class Trigwno {

    //instance variables
    private double basi;
    private double ipsos;
    
    //constructor
    public Trigwno(double b, double i) {
        if (b < 0 || i < 0) {
            throw new RuntimeException();
        }
        basi = b;
        ipsos = i;
    }
    
    //constructor
    public Trigwno() {
        basi = 2;
        ipsos = 2;
    }
    
    //getter
    public double getBasi() {
        return basi;
    }
    
    //setter
    public void setBasi(double b) {
        if (b < 0) {
            throw new RuntimeException();
        }
        basi = b;
    }
    
    //getter
    public double getIpsos() {
        return ipsos;
    }
    
    //setter
    public void setIpsos(double i) {
        if (i < 0) {
            throw new RuntimeException();
        }
        ipsos = i;
    }
    
    // instance function
    public double getEmbadon() {
        return basi * ipsos / 2;
    }
    
    // instance function
    public void print(String varName) {
        System.out.println("ipsos " + varName + " = " + ipsos);
        System.out.println("basi " + varName + " = " + basi);
        System.out.println("embadon " + varName + " = " + getEmbadon());
    }
    
    //static function
    public static void print(Trigwno t, String varName) {
        System.out.println("ipsos " + varName + " = " + t.ipsos);
        System.out.println("basi " + varName + " = " + t.basi);
        System.out.println("embadon " + varName + " = " + t.getEmbadon());
    }
    
    // Note that main is also a static function
    public static void main(String[] args) {
        Trigwno t1 = new Trigwno(2, 5), t2 = new Trigwno();
        t1.print("t1");
        System.out.println("-------------------");
        t2.print("t2");
        System.out.println("-------------------");
        print(t1, "t1");
    }
    
}