1 | // |
---|
2 | // vector3.h |
---|
3 | // |
---|
4 | // C++ class for 3-element vectors |
---|
5 | // |
---|
6 | // Copyright (C) 2000-2002, Mark R. Shinwell. |
---|
7 | // Copyright (C) 2002-2004 Olly Betts |
---|
8 | // |
---|
9 | // This program is free software; you can redistribute it and/or modify |
---|
10 | // it under the terms of the GNU General Public License as published by |
---|
11 | // the Free Software Foundation; either version 2 of the License, or |
---|
12 | // (at your option) any later version. |
---|
13 | // |
---|
14 | // This program is distributed in the hope that it will be useful, |
---|
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
17 | // GNU General Public License for more details. |
---|
18 | // |
---|
19 | // You should have received a copy of the GNU General Public License |
---|
20 | // along with this program; if not, write to the Free Software |
---|
21 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
---|
22 | // |
---|
23 | |
---|
24 | #ifndef Vector3_h |
---|
25 | #define Vector3_h |
---|
26 | |
---|
27 | #include <math.h> |
---|
28 | |
---|
29 | class Vector3 { |
---|
30 | double x; //--FIXME |
---|
31 | double y; |
---|
32 | double z; |
---|
33 | |
---|
34 | public: |
---|
35 | Vector3(); |
---|
36 | Vector3(double, double, double); |
---|
37 | ~Vector3(); |
---|
38 | |
---|
39 | double getX() const { return x; } |
---|
40 | double getY() const { return y; } |
---|
41 | double getZ() const { return z; } |
---|
42 | |
---|
43 | double magnitude() const { |
---|
44 | return sqrt(x*x + y*y + z*z); |
---|
45 | } |
---|
46 | |
---|
47 | void normalise(); |
---|
48 | |
---|
49 | void set(double, double, double); |
---|
50 | |
---|
51 | friend Vector3 operator-(const Vector3& v) { |
---|
52 | Vector3 o; |
---|
53 | o.x = -v.x; |
---|
54 | o.y = -v.y; |
---|
55 | o.z = -v.z; |
---|
56 | return o; |
---|
57 | } |
---|
58 | Vector3& operator*=(const double); |
---|
59 | Vector3& operator/=(const double); |
---|
60 | Vector3& operator+=(const Vector3&); |
---|
61 | Vector3& operator-=(const Vector3&); |
---|
62 | Vector3& operator=(const Vector3&); |
---|
63 | |
---|
64 | friend Vector3 operator*(const double, const Vector3&); |
---|
65 | friend Vector3 operator*(const Vector3& v, const double f) { |
---|
66 | return f * v; |
---|
67 | } |
---|
68 | friend Vector3 operator*(const Vector3&, const Vector3&); // cross product |
---|
69 | friend Vector3 operator+(const Vector3&, const Vector3&); |
---|
70 | friend Vector3 operator-(const Vector3&, const Vector3&); |
---|
71 | friend bool operator==(const Vector3&, const Vector3&); |
---|
72 | friend double dot(const Vector3&, const Vector3&); |
---|
73 | }; |
---|
74 | |
---|
75 | inline bool operator==(const Vector3& a, const Vector3& b) { |
---|
76 | return a.x == b.x && a.y == b.y && a.z == b.z; |
---|
77 | } |
---|
78 | |
---|
79 | #endif |
---|