/*******************************************************************************
                             create_hgrid.h
  This header file provide interface to create different types of horizontal 
  grid. geographical grid location, cell length, cell area and rotation
  angle are returned. All the returned data are on supergrid.

  contact: Zhi.Liang@noaa.gov

*******************************************************************************/
#ifndef CREATE_HGRID_H_
#define CREATE_HGRID_H_
void create_regular_lonlat_grid( int *nxbnds, int *nybnds, double *xbnds, double *ybnds,
		         	 int *nlon, int *nlat, double *dlon, double *dlat,
				 int use_legacy, int *isc, int *iec,
				 int *jsc, int *jec, double *x, double *y, double *dx,
				 double *dy, double *area, double *angle_dx, const char *center,
                                 int  use_great_circle_algorithm);

void create_simple_cartesian_grid( double *xbnds, double *ybnds, int *nlon, int *nlat,
				   double *simple_dx, double *simple_dy, int *isc, int *iec,
				   int *jsc, int *jec, double *x, double *y,
				   double *dx, double *dy, double *area, double *angle_dx);

void create_grid_from_file( char *file, int *nlon, int *nlat, double *x, double *y, double *dx, double *dy,
           		    double *area, double *angle_dx, int  use_great_circle_algorithm );

void create_spectral_grid( int *nlon, int *nlat, int *isc, int *iec,
			   int *jsc, int *jec, double *x, double *y, double *dx,
			   double *dy, double *area, double *angle_dx, int  use_great_circle_algorithm );

void create_tripolar_grid( int *nxbnds, int *nybnds, double *xbnds, double *ybnds,
			   int *nlon, int *nlat, double *dlon, double *dlat,
			   int use_legacy, double *lat_join_in, int *isc, int *iec,
			   int *jsc, int *jec, double *x, double *y, double *dx, double *dy,
			   double *area, double *angle_dx, const char *center, unsigned int verbose,
                           int  use_great_circle_algorithm);

void create_conformal_cubic_grid( int *npts, int *nratio, char *method, char *orientation, double *x,
			          double *y, double *dx, double *dy, double *area, double *angle_dx,
			          double *angle_dy );

void create_gnomonic_cubic_grid( char* grid_type, int *nlon, int *nlat, double *x, double *y,
				 double *dx, double *dy, double *area, double *angle_dx,
			         double *angle_dy, double shift_fac, int do_schmidt, double stretch_factor,
				 double target_lon, double target_lat, int nest_grid,
				 int parent_tile, int refine_ratio, int istart_nest,
				 int iend_nest, int jstart_nest, int jend_nest, int halo );
void create_f_plane_grid( int *nxbnds, int *nybnds, double *xbnds, double *ybnds,
                          int *nlon, int *nlat, double *dlon, double *dlat,
			  int use_legacy, double f_plane_latitude, int *isc, int *iec,
                          int *jsc, int *jec, double *x, double *y, double *dx,
                          double *dy, double *area, double *angle_dx, const char *center );
#endif