1// SuperTux
2// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
3//
4// This program is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with this program. If not, see <http://www.gnu.org/licenses/>.
16
17#include <math.h>
18#include <ostream>
19
20#include "math/vector.hpp"
21
22Vector Vector::unit() const
23{
24 return *this / norm();
25}
26
27float Vector::norm() const
28{
29 return sqrtf(x*x + y*y);
30}
31
32std::ostream& operator<<(std::ostream& out, const Vector& vector)
33{
34 out << "Vector(" << vector.x << ", " << vector.y << ')';
35 return out;
36}
37
38/* EOF */
39