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
|
/******************************************************************************
*
* Project: OpenCPN
*
***************************************************************************
* Copyright (C) 2013 by David S. Register *
* *
* 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 2 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************
*/
#ifndef __VECTOR2D_H__
#define __VECTOR2D_H__
class vector2D
{
public:
vector2D() { x = 0.0; y = 0.0; }
vector2D( double a, double b ) { x = a; y = b; }
friend bool operator==( vector2D &a, vector2D &b ) { return a.x == b.x && a.y == b.y; }
friend bool operator!=( vector2D &a, vector2D &b ) { return a.x != b.x || a.y != b.y; }
friend vector2D operator-( vector2D a, vector2D b ) { return vector2D( a.x - b.x, a.y - b.y ); }
friend vector2D operator+( vector2D a, vector2D b ) { return vector2D( a.x + b.x, a.y + b.y ); }
friend vector2D operator*( double t, vector2D a ) { return vector2D( a.x * t, a.y * t ); }
union{ double x; double lon; };
union{ double y; double lat; };
};
typedef vector2D* pVector2D;
//---------------------------------------------------------------------------------
// Vector Stuff for Hit Test Algorithm
//---------------------------------------------------------------------------------
extern "C" double vGetLengthOfNormal(pVector2D a, pVector2D b, pVector2D n);
extern "C" double vDotProduct(pVector2D v0, pVector2D v1);
extern "C" pVector2D vAddVectors(pVector2D v0, pVector2D v1, pVector2D v);
extern "C" pVector2D vSubtractVectors(pVector2D v0, pVector2D v1, pVector2D v);
extern "C" double vVectorMagnitude(pVector2D v0);
extern "C" double vVectorSquared(pVector2D v0);
#endif
|
