Merge branch 'next' of gitorious.org:fg/flightgear into next

[flightgear.git] / src / Radio / antenna.hxx

diff --git a/src/Radio/antenna.hxx b/src/Radio/antenna.hxx
index 9d54c4cace19783e15b645503e90413b8f15e593..55247e61e94b895abac0ef077f0f3d8cd7d60a1c 100644 (file)
--- a/src/Radio/antenna.hxx
+++ b/src/Radio/antenna.hxx
@@ -1,6 +1,6 @@
 // antenna.hxx -- FGRadioAntenna: class to represent antenna properties
 //
-// Written by Adrian Musceac, started December 2011.
+// Written by Adrian Musceac YO8RZZ, started December 2011.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License as
@@ -15,3 +15,58 @@
 // 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 __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <Main/fg_props.hxx>
+
+#include <simgear/math/sg_geodesy.hxx>
+#include <simgear/debug/logstream.hxx>
+
+using std::string;
+
+class FGRadioAntenna
+{
+private:
+       
+/*** load external plot file generated by NEC2. needs to have a txt extension
+*      when naming plots, use the following scheme: type_frequencyMHz.txt
+*      eg: yagi_110.txt or LPDA_333.txt
+*      @param: name of file
+*      @return: none
+***/
+       void load_NEC_antenna_pattern(string type);
+       
+       int _mirror_y;  
+       int _mirror_z;
+       int _invert_ground;
+       double _heading_deg;
+       double _elevation_angle_deg;
+       struct AntennaGain {
+               double azimuth;
+               double elevation;
+               double gain;
+       };
+       SGPath _pattern_file;
+       typedef std::vector<AntennaGain*> AntennaPattern;
+       AntennaPattern _pattern;
+       
+public:
+       
+       FGRadioAntenna(string type);
+    ~FGRadioAntenna();
+
+/*** calculate far-field antenna gain on a 3D volume around it
+*      @param: bearing to the other station, vertical angle (some call it theta)
+*      @return: gain relative to maximum normalized gain. will be negative in all cases
+***/
+       double calculate_gain(double bearing, double angle);
+       
+       /// some convenience setters and getters (unused for now)
+       inline void set_heading(double heading_deg) {_heading_deg = heading_deg ;};
+       inline void set_elevation_angle(double elevation_angle_deg) {_elevation_angle_deg = elevation_angle_deg ;};
+};