/*
 * INFO0062 - Object-oriented programming
 * Special session (16/05/2019)
 *
 * Example of solution for the 1st question of the written examination from May 2018.
 *
 * Keep in mind that it is not the only possible solution. There are ways to write some parts of
 * the code in another manner that is still as valid as what is presented here.
 *
 * @author: J.-F. Grailet
 */

import java.io.Serializable; // Remark: not asked at the examination.

public class Point3D implements Cloneable, Serializable
{
    // Remark: not asked at the examination.
    private static final long serialVersionUID = 170192L;

    private int x, y, z;

    public Point3D(int x, int y, int z)
    {
        this.x = x;
        this.y = y;
        this.z = z;
    }

    public int getX() { return x; }
    public int getY() { return y; }
    public int getZ() { return z; }

    public void translate(int dx, int dy, int dz)
    {
        x += dx;
        y += dy;
        z += dz;
    }

    public boolean equals(Object o)
    {
        if(!(o instanceof Point3D))
            return false;

        Point3D p2 = (Point3D) o;
        if(x != p2.x || y != p2.y || z != p2.z)
            return false;
        return true;
    }

    public int hashCode()
    {
        return x + y + z;
    }

    public Object clone()
    {
        Point3D clone = null;
        try
        {
            clone = (Point3D) super.clone();
        }
        catch(CloneNotSupportedException e)
        {
            throw new InternalError("Unable to clone Point3D");
        }
        return clone;
    }

    // Not asked, just for display in the Main class
    public String toString()
    {
        return "(" + x + "," + y + "," + z + ")";
    }
}