#include "gnnode.hxx"
#include "groundnetwork.hxx"

#include <iostream>
#include <algorithm>
using std::sort;

/*****************************************************************************
 * Helper function for parsing position string
 ****************************************************************************/
double processPosition(const string &pos)
{
  string prefix;
  string subs;
  string degree;
  string decimal;
  int sign = 1;
  double value;
  subs = pos;
  prefix= subs.substr(0,1);
  if (prefix == string("S") || (prefix == string("W")))
    sign = -1;
  subs    = subs.substr(1, subs.length());
  degree  = subs.substr(0, subs.find(" ",0));
  decimal = subs.substr(subs.find(" ",0), subs.length());
  
	      
  //cerr << sign << " "<< degree << " " << decimal << endl;
  value = sign * (atof(degree.c_str()) + atof(decimal.c_str())/60.0);
  //cerr << value <<endl;
  //exit(1);
  return value;
}

//bool sortByHeadingDiff(FGTaxiSegment *a, FGTaxiSegment *b) {
//  return a->hasSmallerHeadingDiff(*b);
//}

bool sortByLength(FGTaxiSegment *a, FGTaxiSegment *b) {
  return a->getLength() > b->getLength();
}

/**************************************************************************
 * FGTaxiNode
 *************************************************************************/
void FGTaxiNode::setElevation(double val)
{
    geod.setElevationM(val);
}

void FGTaxiNode::setLatitude (double val)
{
  geod.setLatitudeDeg(val);
}

void FGTaxiNode::setLongitude(double val)
{
  geod.setLongitudeDeg(val);
}

void FGTaxiNode::setLatitude (const string& val)
{
  geod.setLatitudeDeg(processPosition(val));
}

void FGTaxiNode::setLongitude(const string& val)
{
  geod.setLongitudeDeg(processPosition(val));
}
  
//void FGTaxiNode::sortEndSegments(bool byLength)
//{
//  if (byLength)
//    sort(next.begin(), next.end(), sortByLength);
//  else
//    sort(next.begin(), next.end(), sortByHeadingDiff);
//}