fly/flightgear
1
0
Fork 0
Code Activity

Remove unsed code.

Browse source 
Modified Files:
	ATCProjection.cxx ATCProjection.hxx
This commit is contained in:
frohlich 2009-03-16 11:43:19 +00:00 • committed by Tim Moore
parent c254bb9c38
commit 4a9484ac25
2 changed files with 0 additions and 62 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
src/ATCDCL/ATCProjection.cxx
View file

@ -26,45 +26,6 @@
#include <math.h>
#include <simgear/constants.h>
FGATCProjection::FGATCProjection() {
_origin.setlat(0.0);
_origin.setlon(0.0);
_origin.setelev(0.0);
_correction_factor = cos(_origin.lat() * SG_DEGREES_TO_RADIANS);
}
FGATCProjection::FGATCProjection(const Point3D& centre) {
_origin = centre;
_correction_factor = cos(_origin.lat() * SG_DEGREES_TO_RADIANS);
}
FGATCProjection::~FGATCProjection() {
}
void FGATCProjection::Init(const Point3D& centre) {
_origin = centre;
_correction_factor = cos(_origin.lat() * SG_DEGREES_TO_RADIANS);
}
Point3D FGATCProjection::ConvertToLocal(const Point3D& pt) {
double delta_lat = pt.lat() - _origin.lat();
double delta_lon = pt.lon() - _origin.lon();
double y = sin(delta_lat * SG_DEGREES_TO_RADIANS) * SG_EQUATORIAL_RADIUS_M;
double x = sin(delta_lon * SG_DEGREES_TO_RADIANS) * SG_EQUATORIAL_RADIUS_M * _correction_factor;
return(Point3D(x,y,0.0));
}
Point3D FGATCProjection::ConvertFromLocal(const Point3D& pt) {
double delta_lat = asin(pt.y() / SG_EQUATORIAL_RADIUS_M) * SG_RADIANS_TO_DEGREES;
double delta_lon = (asin(pt.x() / SG_EQUATORIAL_RADIUS_M) * SG_RADIANS_TO_DEGREES) / _correction_factor;
return(Point3D(_origin.lon()+delta_lon, _origin.lat()+delta_lat, 0.0));
}
/**********************************************************************************/
FGATCAlignedProjection::FGATCAlignedProjection() {
_origin.setlat(0.0);
_origin.setlon(0.0);

23
src/ATCDCL/ATCProjection.hxx
View file

@ -23,29 +23,6 @@
#include <simgear/math/point3d.hxx>
// FGATCProjection - a class to project an area local to an airport onto an orthogonal co-ordinate system
class FGATCProjection {
public:
FGATCProjection();
FGATCProjection(const Point3D& centre);
~FGATCProjection();
void Init(const Point3D& centre);
// Convert a lat/lon co-ordinate (degrees) to the local projection (meters)
Point3D ConvertToLocal(const Point3D& pt);
// Convert a local projection co-ordinate (meters) to lat/lon (degrees)
Point3D ConvertFromLocal(const Point3D& pt);
private:
Point3D _origin; // lat/lon of local area origin
double _correction_factor; // Reduction in surface distance per degree of longitude due to latitude. Saves having to do a cos() every call.
};
// FGATCAlignedProjection - a class to project an area local to a runway onto an orthogonal co-ordinate system
// with the origin at the threshold and the runway aligned with the y axis.
class FGATCAlignedProjection {