A Discrete-Event Network Simulator
API
angles.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2011, 2012 CTTC
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
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, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Nicola Baldo <nbaldo@cttc.es>
19  */
20 
21 
22 #include <ns3/log.h>
23 #include <cmath>
24 #include "angles.h"
25 
26 
27 namespace ns3 {
28 
29 NS_LOG_COMPONENT_DEFINE ("Angles");
30 
31 double DegreesToRadians (double degrees)
32 {
33  return degrees * M_PI / 180.0;
34 
35 }
36 
37 double RadiansToDegrees (double radians)
38 {
39  return radians * 180.0 / M_PI;
40 }
41 
42 std::ostream& operator<< (std::ostream& os, const Angles& a)
43 {
44  os << "(" << a.phi << ", " << a.theta << ")";
45  return os;
46 }
47 
48 std::istream &operator >> (std::istream &is, Angles &a)
49 {
50  char c;
51  is >> a.phi >> c >> a.theta;
52  if (c != ':')
53  {
54  is.setstate (std::ios_base::failbit);
55  }
56  return is;
57 }
58 
59 
61  : phi (0),
62  theta (0)
63 {
64 }
65 
66 
67 Angles::Angles (double p, double t)
68  : phi (p),
69  theta (t)
70 {
71 }
72 
73 
74 Angles::Angles (Vector v)
75  : phi (std::atan2 (v.y, v.x)),
76  theta (std::acos (v.z / v.GetLength ()))
77 {
78 }
79 
80 Angles::Angles (Vector v, Vector o)
81  : phi (std::atan2 (v.y - o.y, v.x - o.x)),
82  theta (std::acos ((v.z - o.z) / CalculateDistance (v, o)))
83 {
84 }
85 
86 
87 }
88 
std::istream & operator>>(std::istream &is, Angles &a)
initialize a struct Angles from input
Definition: angles.cc:48
double DegreesToRadians(double degrees)
converts degrees to radians
Definition: angles.cc:31
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:205
double theta
the inclination angle in radians
Definition: angles.h:117
STL namespace.
double CalculateDistance(const Vector3D &a, const Vector3D &b)
Definition: vector.cc:92
std::ostream & operator<<(std::ostream &os, const Angles &a)
print a struct Angles to output
Definition: angles.cc:42
Every class exported by the ns3 library is enclosed in the ns3 namespace.
double RadiansToDegrees(double radians)
converts radians to degrees
Definition: angles.cc:37
double phi
the azimuth angle in radians
Definition: angles.h:111
struct holding the azimuth and inclination angles of spherical coordinates.
Definition: angles.h:71
Angles()
default constructor, will initialize phi and theta to zero
Definition: angles.cc:60