toy_multi_common.h

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// Copyright (c) 2024 The YAC Authors
//
// SPDX-License-Identifier: BSD-3-Clause
 
#include <math.h>
 
int run_toy_multi_common (
  char const * comp_name, int comp_id, int grid_id,
  int cell_point_id, int corner_point_id,
  double * cell_point_data, double * corner_point_data,
  YAC_VTK_FILE * vtk_file);
 
static inline void LLtoXYZ(double lon, double lat, double p_out[]) {
 
   while (lon < -M_PI) lon += 2.0 * M_PI;
   while (lon >= M_PI) lon -= 2.0 * M_PI;
 
   double cos_lat = cos(lat);
   p_out[0] = cos_lat * cos(lon);
   p_out[1] = cos_lat * sin(lon);
   p_out[2] = sin(lat);
}
 
static inline void XYZtoLL (double const p_in[], double * lon, double * lat) {
 
   *lon = atan2(p_in[1] , p_in[0]);
   *lat = M_PI_2 - acos(p_in[2]);
}
 
#define MIN(a,b) ((a) < (b) ? (a) : (b))