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flightgear/src/Airports/gnnode.cxx
2012-09-24 08:39:30 +01:00

99 lines
2.7 KiB
C++

#include "gnnode.hxx"
#include "groundnetwork.hxx"
#include <iostream>
#include <algorithm>
#include <osg/Geode>
#include <Main/globals.hxx>
#include <Scenery/scenery.hxx>
using std::sort;
using std::string;
/*****************************************************************************
* 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));
}
double FGTaxiNode::getElevationFt(double refelev)
{
double elevF = geod.getElevationFt();
double elevationEnd = 0;
if ((elevF == 0) || (elevF == refelev)) {
SGGeod center2 = geod;
FGScenery * local_scenery = globals->get_scenery();
center2.setElevationM(SG_MAX_ELEVATION_M);
if (local_scenery->get_elevation_m( center2, elevationEnd, NULL )) {
geod.setElevationM(elevationEnd);
}
}
//cerr << "Returning elevation : " << geod.getElevationM() << ". Ref elev (feet) = " << refelev << endl;
return geod.getElevationFt();
}
double FGTaxiNode::getElevationM(double refelev)
{
//double refelevFt = refelev * SG_METER_TO_FEET;
//double retval = getElevationFt(refelevFt);
//cerr << "Returning elevation : " << geod.getElevationM() << ". Ref elev (meters) = " << refelev << endl;
return geod.getElevationM();
}