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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 | #include "Vector2.h" |
19 | #include "mathw.h" | |
20 | ||
617dcc71 PG |
21 | /// ***** Constructors/Destructors ***** |
22 | ||
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23 | Vector2::Vector2() |
24 | : x(0), y(0) | |
25 | { | |
617dcc71 | 26 | |
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27 | } |
28 | Vector2::Vector2(float x, float y) | |
29 | : x(x), y(y) | |
30 | { | |
617dcc71 | 31 | |
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32 | } |
33 | Vector2::Vector2(const Vector2& vec) | |
34 | : x(vec.x), y(vec.y) | |
35 | { | |
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36 | |
37 | } | |
38 | Vector2::~Vector2() | |
39 | { | |
40 | ||
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41 | } |
42 | ||
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43 | /// ***** Public Class Methods ***** |
44 | ||
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45 | void Vector2::zero() |
46 | { | |
617dcc71 PG |
47 | x = 0; |
48 | y = 0; | |
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49 | } |
50 | void Vector2::unit() | |
51 | { | |
617dcc71 | 52 | float len = length(); |
ad9f1fb6 | 53 | |
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54 | x /= len; |
55 | y /= len; | |
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56 | } |
57 | ||
58 | float Vector2::angle() const | |
59 | { | |
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60 | //TODO |
61 | //return atan2A(y,x); | |
62 | return 0; | |
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63 | } |
64 | float Vector2::length() const | |
65 | { | |
617dcc71 | 66 | return sqrt(x*x + y*y); |
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67 | } |
68 | ||
69 | ||
70 | string Vector2::toString() const | |
71 | { | |
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72 | // long just to be safe |
73 | char* strX = new char[50]; | |
74 | char* strY = new char[50]; | |
75 | ||
76 | sprintf(strX, "%f", x); | |
77 | sprintf(strY, "%f", y); | |
78 | ||
79 | string val = (string)"Vector2 x: " + strX + ", y: " + strY; | |
ad9f1fb6 | 80 | |
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81 | // deletes the allocated memory, not just what is used by sprintf |
82 | delete []strX; | |
83 | delete []strY; | |
ad9f1fb6 | 84 | |
617dcc71 | 85 | return val; |
ad9f1fb6 PG |
86 | } |
87 | void Vector2::print() const | |
88 | { | |
617dcc71 | 89 | printf("%s\n",toString().c_str()); |
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90 | } |
91 | ||
92 | ||
93 | Vector2 Vector2::add(const Vector2& vec) const | |
94 | { | |
617dcc71 | 95 | return Vector2(x+vec.x, y+vec.y); |
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96 | } |
97 | Vector2 Vector2::subtract(const Vector2& vec) const | |
98 | { | |
617dcc71 | 99 | return Vector2(x-vec.x, y-vec.y); |
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100 | } |
101 | Vector2 Vector2::multiply(float c) const | |
102 | { | |
617dcc71 | 103 | return Vector2(x*c, y*c); |
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104 | } |
105 | Vector2 Vector2::divide(float c) const | |
106 | { | |
617dcc71 | 107 | return Vector2(x/c, y/c); |
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108 | } |
109 | ||
617dcc71 | 110 | /// ***** Public Methods ***** |
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111 | |
112 | Vector2 operator+(const Vector2& vec1, const Vector2& vec2) | |
113 | { | |
617dcc71 | 114 | return vec1.add(vec2); |
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115 | } |
116 | Vector2 operator-(const Vector2& vec1, const Vector2& vec2) | |
117 | { | |
617dcc71 | 118 | return vec1.subtract(vec2); |
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119 | } |
120 | Vector2 operator*(float c, const Vector2& vec) | |
121 | { | |
617dcc71 | 122 | return vec.multiply(c); |
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123 | } |
124 | Vector2 operator*(const Vector2& vec, float c) | |
125 | { | |
617dcc71 | 126 | return vec.multiply(c); |
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127 | } |
128 | Vector2 operator/(const Vector2& vec, float c) | |
129 | { | |
617dcc71 | 130 | return vec.divide(c); |
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131 | } |
132 | ||
133 | ||
134 | void operator+=(Vector2& vec1, const Vector2& vec2) | |
135 | { | |
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136 | vec1.x += vec2.x; |
137 | vec1.y += vec2.y; | |
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138 | } |
139 | void operator-=(Vector2& vec1, const Vector2& vec2) | |
140 | { | |
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141 | vec1.x -= vec2.x; |
142 | vec1.y -= vec2.y; | |
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143 | } |
144 | void operator*=(Vector2& vec, float c) | |
145 | { | |
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146 | vec.x *= c; |
147 | vec.y *= c; | |
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148 | } |
149 | void operator/=(Vector2& vec, float c) | |
150 | { | |
617dcc71 PG |
151 | vec.x /= c; |
152 | vec.y /= c; | |
ad9f1fb6 | 153 | } |