84 #include "CoordinateSystem.h" 
   91     class MapProjection4Parameters;
 
   92     class MapProjectionCoordinates;
 
   93     class GeodeticCoordinates;
 
  123         Gnomonic( 
double ellipsoidSemiMajorAxis, 
double ellipsoidFlattening, 
double centralMeridian, 
double originLatitude, 
double falseEasting, 
double falseNorthing );
 
  189       double Sin_Gnom_Origin_Lat;
 
  190       double Cos_Gnom_Origin_Lat;
 
  193       double Gnom_Origin_Lat;               
 
  194       double Gnom_Origin_Long;              
 
  195       double Gnom_False_Northing;           
 
  196       double Gnom_False_Easting;            
 
  197       double abs_Gnom_Origin_Lat;
 
  199       double Gnom_Delta_Northing;
 
  200       double Gnom_Delta_Easting;