blob: 78f536b77d49db7a5826a5b8e5d4ba46b7c61859 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Vector2D.cpp
*
* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Vector2D.h"
#include <cmath>
namespace ZoomEdit {
namespace Math {
float Vector2D::lengthSq() const {
return x*x + y*y;
}
float Vector2D::length() const {
return std::sqrt(lengthSq());
}
Vector2D Vector2D::operator+(const Vector2D &v) const {
return Vector2D(x + v.x, y + v.y);
}
Vector2D Vector2D::operator-(const Vector2D &v) const {
return Vector2D(x - v.x, y - v.y);
}
float Vector2D::operator*(const Vector2D &v) const {
return (x*v.x + y*v.y);
}
Vector2D Vector2D::operator*(float f) const {
return Vector2D(x*f, y*f);
}
Vector2D Vector2D::operator/(float f) const {
return Vector2D(x/f, y/f);
}
Vector2D& Vector2D::operator+=(const Vector2D &v) {
x += v.x;
y += v.y;
return *this;
}
Vector2D& Vector2D::operator-=(const Vector2D &v) {
x -= v.x;
y -= v.y;
return *this;
}
Vector2D& Vector2D::operator*=(float f) {
x *= f;
y *= f;
return *this;
}
Vector2D& Vector2D::operator/=(float f) {
x /= f;
y /= f;
return *this;
}
}
}
|
