80 #include "CoordinateSystem.h" 
   87     class MapProjection3Parameters;
 
   88     class MapProjectionCoordinates;
 
   89     class GeodeticCoordinates;
 
  117         Eckert4( 
double ellipsoidSemiMajorAxis, 
double ellipsoidFlattening, 
double centralMeridian, 
double falseEasting, 
double falseNorthing );
 
  190       double Eck4_Origin_Long;                  
 
  191       double Eck4_False_Easting;
 
  192       double Eck4_False_Northing;
 
  193       double Eck4_Delta_Northing;
 
  194       double Eck4_Max_Easting;
 
  195       double Eck4_Min_Easting;