polar.h

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#ifndef POLAR_H
#define POLAR_H
 
#ifdef _MSC_VER
#ifndef _CRT_SECURE_NO_DEPRECATE
#define _CRT_SECURE_NO_DEPRECATE
#endif
#ifndef _CRT_NONSTDC_NO_DEPRECATE
#define _CRT_NONSTDC_NO_DEPRECATE
#endif
#ifndef _USE_MATH_DEFINES
#define _USE_MATH_DEFINES
#endif
#endif
 
typedef struct {
  double alt0; 
  double lat0; 
  double lon0; 
  double alt; 
  double lat; 
  double lon; 
  double azimuth; 
  double distance; 
  double dndh; 
  double range; 
  double elevation; 
  double momelev; 
} Position;
 
void resetPosStruct(Position* pos);
 
Position* copyPosStruct(Position* src);
 
double getEarthRadius(double lat0);
 
void llToDa(Position* src, Position* tgt);
 
void daToLl(Position* src, Position* tgt);
 
void dhToRe(Position* src, Position* tgt);
 
void deToRh(Position* src, Position* tgt);
 
void reToDh(Position* src, Position* tgt);
 
void ehToRd(Position* src, Position* tgt);
 
#endif