/**

 * Copyright (C) 2008 Markus Broeker

 */

#include <cmath>

#include <vector.hpp>

#include <cstdio>

using namespace algebra;

Vector::Vector (int xx, int yy)

{

    name = "Vector";

    x = xx;

    y = yy;

    mode = RAD;

    refCounter++;

#ifdef DEBUG

    fprintf (stderr, "New Vector: (%.3d, %.3d)\n", x, y);

#endif

}

Vector::Vector (const Vector & copy)

:x (copy.x), y (copy.y)

{

    fprintf (stderr, "Warning: Copy Constructor: ");

    vector ();

    fprintf (stderr, "\n");

    refCounter++;

}

Vector::~Vector ()

{

#ifdef DEBUG

    fprintf (stderr, "Bye, bye Vector: (%.3d, %.3d)\n", x, y);

#endif

}

int Vector::X ()

{

    return x;

}

int Vector::Y ()

{

    return y;

}

Vector Vector::operator+ (Vector & a)

{

    return Vector (x + a.X (), y + a.Y ());

}

Vector Vector::operator- (Vector & a)

{

    return Vector (x - a.X (), y - a.Y ());

}

double Vector::abs ()

{

    return (std::sqrt (x * x + y * y));

}

void Vector::vector ()

{

    fprintf (stderr, "(%.3d, %.3d)", x, y);

}

double Vector::angle (Vector & v)

{

    if (mode == DEG)

        return ((180.0 / M_PI) * std::acos ((v.X () * X () + v.Y () * Y ()) / (abs () * v.abs ())));

    return (std::acos ((v.X () * X () + v.Y () * Y ()) / (abs () * v.abs ())));

}

void Vector::setMode (Mode m)

{

    mode = m;

}