From 6d816823db84878f9de2724f0aac2da1096b604c Mon Sep 17 00:00:00 2001
From: adrian <adrian@localhost.com>
Date: Sun, 4 Dec 2011 11:28:59 +0200
Subject: [PATCH] Load pattern file from FG_HOME/antennas

---
 src/Radio/antenna.cxx | 30 ++++++++++++++++++++++++++----
 src/Radio/antenna.hxx |  8 +++++---
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/src/Radio/antenna.cxx b/src/Radio/antenna.cxx
index d61848907..8ebb154f0 100644
--- a/src/Radio/antenna.cxx
+++ b/src/Radio/antenna.cxx
@@ -22,18 +22,20 @@
 #endif
 
 #include <math.h>
-
+#include <iostream>
 #include <stdlib.h>
-
+#include <fstream>
 #include <Scenery/scenery.hxx>
 #include "antenna.hxx"
 
+using namespace std;
 
-FGRadioAntenna::FGRadioAntenna() {
+FGRadioAntenna::FGRadioAntenna(string type) {
 	
 	_mirror_y = 1;
 	_mirror_z = 1;
 	_invert_ground = 0;
+	load_antenna_pattern(type);
 }
 
 FGRadioAntenna::~FGRadioAntenna() {
@@ -48,6 +50,26 @@ double FGRadioAntenna::calculate_gain(double azimuth, double elevation) {
 
 /*** load external plot file generated by NEC4
 ***/
-void FGRadioAntenna::load_antenna_pattern() {
+void FGRadioAntenna::load_antenna_pattern(string type) {
+	
+	SGPath pattern_file(fgGetString("/sim/fg-home"));
+	pattern_file.append("antennas");
+	pattern_file.append(type + ".txt");
+	if (!pattern_file.exists()) {
+		return;
+	}
+	ifstream file_in(pattern_file.c_str());
+	int heading, elevation;
+	double gain;
+	while(!file_in.eof()) {
+		file_in >> heading >> elevation >> gain;
+		cerr << "head: " << heading << " elev: " << elevation << " gain: " << gain << endl;
+		AntennaGain datapoint;
+		datapoint.azimuth = heading;
+		datapoint.elevation = elevation;
+		datapoint.gain = gain;
+		_pattern.push_back(datapoint);
+	}
+		
 	
 }
diff --git a/src/Radio/antenna.hxx b/src/Radio/antenna.hxx
index 3e6da2566..f0c3877d8 100644
--- a/src/Radio/antenna.hxx
+++ b/src/Radio/antenna.hxx
@@ -27,10 +27,12 @@
 #include <simgear/math/sg_geodesy.hxx>
 #include <simgear/debug/logstream.hxx>
 
+using std::string;
+
 class FGRadioAntenna
 {
 private:
-	void load_antenna_pattern();
+	void load_antenna_pattern(string type);
 	int _mirror_y;
 	int _mirror_z;
 	int _invert_ground;
@@ -41,13 +43,13 @@ private:
 		double elevation;
 		double gain;
 	};
-	
+	SGPath _pattern_file;
 	typedef std::vector<AntennaGain> AntennaPattern;
 	AntennaPattern _pattern;
 	
 public:
 	
-	FGRadioAntenna();
+	FGRadioAntenna(string type);
     ~FGRadioAntenna();
 	double calculate_gain(double azimuth, double elevation);