refactored Vector2
[physics.git] / src / Vector2.h
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1/*
2 * Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com.
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
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18#ifndef VECTOR2_H
19#define VECTOR2_H
20
21#include <string>
22
23using std::string;
24
25/// ***** Header Class *****
26class Vector2
27{
28 public:
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29 float m_fX;
30 float m_fY;
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31
32 Vector2();
33 Vector2(float, float);
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34
35 void zero();
36 void unit();
37
38 float angle() const;
39 float length() const;
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40 float sqrLength() const;
41
42 float dot(const Vector2&) const;
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43
44 Vector2 add(const Vector2&) const;
45 Vector2 subtract(const Vector2&) const;
46 Vector2 divide(float) const;
47 Vector2 multiply(float) const;
48
49 string toString() const;
50 void print() const;
51};
52
53/// ***** Header Methods *****
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54
55// definitions of the operators are external because (float, Vector2) would
56// fail inside the class
57
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58Vector2 operator+(const Vector2&, const Vector2&);
59Vector2 operator-(const Vector2&, const Vector2&);
60Vector2 operator*(float, const Vector2&);
61Vector2 operator*(const Vector2&, float);
62Vector2 operator/(const Vector2&, float);
63
64void operator+=(Vector2&, const Vector2&);
65void operator-=(Vector2&, const Vector2&);
66void operator*=(Vector2&, float);
67void operator/=(Vector2&, float);
68
69#endif // VECTOR2_H