sc_earth_elevation.h

Go to the documentation of this file.

/*
 *  sc_earth_elevation.h
 *  SCControl
 *
 *  Created by Ken Worley on 4/5/10.
 *  Copyright 2010 Princeton Satellite Systems. All rights reserved.
 *
 *  Note: Requires the libz.dylib library
 */
 
 
#ifndef __SC_EARTH_ELEVATION__
#define __SC_EARTH_ELEVATION__
 
#ifdef AS_OS_WINDOWS
#include "matrixlib.h"
#else
#include <MatrixLib/MatrixLib.h>
#endif
 
#include "sc_constants.h"
 
#define kDegreesPerPixel 0.0083333333333
 
typedef enum
{
    elev_precision_none = 0,
    elev_precision_10  = 1,  // 10 deg x 10 deg
    elev_precision_1   = 2,  // 1 deg x 1 deg
    elev_precision_01  = 3,  // .1 deg x .1 deg
    elev_precision_001 = 4   // .01 deg x .01 deg
}
ElevationPrecision;
 
extern "C++"
{
 
double earth_surface_elevation(double lat, double lon);
double earth_surface_elevation(const ml_matrix &efpos, double f=FLATTENING_FACTOR);
ml_matrix earth_surface_ef_pos(const ml_matrix &efpos, double f=FLATTENING_FACTOR, double a=RADIUS_EARTH);
 
class sc_earth_elevation_square;
class ml_matrix;
    
 
class sc_earth_elevation
{
    public:
    
        static sc_earth_elevation* default_manager();
 
        sc_earth_elevation(const char *pathToDemFiles);
        
        ~sc_earth_elevation();
    
        double elevationForLatLon(double lat, double lon);
        
        double elevationForEFPos(const ml_matrix& efPos, double f=FLATTENING_FACTOR);
        
        bool hasLandInGridSquare(double lat, double lon, ElevationPrecision gridSize);
    
    private:
    
        static sc_earth_elevation *defaultManager;
        
        sc_earth_elevation_square* squareForLatLon(double lat, double lon);
        
        sc_earth_elevation_square*   squares[9][3];
        
        sc_earth_elevation_square*   southSquares[6];
};
 
} // extern "C++"
 
#endif // ifndef __SC_EARTH_ELEVATION__