grid.h 5.14 KB
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#ifndef _GRID_H
#define _GRID_H

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#include "cdi.h"
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#include <stdbool.h>
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#include "vlist_att.h"

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typedef unsigned char mask_t;
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typedef struct grid_t grid_t;

struct gridVirtTable
{
  void (*destroy)(grid_t *gridptr);
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  grid_t *(*copy)(grid_t *gridptr);
  void (*copyScalarFields)(grid_t *gridptrOrig, grid_t *gridptrDup);
  void (*copyArrayFields)(grid_t *gridptrOrig, grid_t *gridptrDup);
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  void (*defXVals)(grid_t *gridptr, const double *xvals);
  void (*defYVals)(grid_t *gridptr, const double *yvals);
  void (*defMask)(grid_t *gridptr, const int *mask);
  void (*defMaskGME)(grid_t *gridptr, const int *mask);
  void (*defXBounds)(grid_t *gridptr, const double *xbounds);
  void (*defYBounds)(grid_t *gridptr, const double *ybounds);
  void (*defArea)(grid_t *gridptr, const double *area);
  double (*inqXVal)(grid_t *gridptr, int index);
  double (*inqYVal)(grid_t *gridptr, int index);
  int (*inqXVals)(grid_t *gridptr, double *xvals);
  int (*inqYVals)(grid_t *gridptr, double *yvals);
  const double *(*inqXValsPtr)(grid_t *gridptr);
  const double *(*inqYValsPtr)(grid_t *gridptr);
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  /* return if for both grids, all xval and all yval are equal */
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  bool (*compareXYFull)(grid_t *gridRef, grid_t *gridTest);
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  /* return if for both grids, x[0], y[0], x[size-1] and y[size-1] are
   * respectively equal */
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  bool (*compareXYAO)(grid_t *gridRef, grid_t *gridTest);
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  void (*inqArea)(grid_t *gridptr, double *area);
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  const double *(*inqAreaPtr)(grid_t *gridptr);
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  int (*hasArea)(grid_t *gridptr);
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  int (*inqMask)(grid_t *gridptr, int *mask);
  int (*inqMaskGME)(grid_t *gridptr, int *mask_gme);
  int (*inqXBounds)(grid_t *gridptr, double *xbounds);
  int (*inqYBounds)(grid_t *gridptr, double *ybounds);
  const double *(*inqXBoundsPtr)(grid_t *gridptr);
  const double *(*inqYBoundsPtr)(grid_t *gridptr);
};

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struct gridaxis_t {
  char    name[CDI_MAX_NAME];
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  char    longname[CDI_MAX_NAME];
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  char    units[CDI_MAX_NAME];
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  char    dimname[CDI_MAX_NAME];
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  const char *stdname;
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  int     size;                  // number of values
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  short   flag;                  // 0: undefined 1:vals 2:first+inc
  double  first, last, inc;
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  double *vals;
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  double *bounds;
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};

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// Lambert Conformal Conic
struct grid_lcc_t {
  double  originLon;
  double  originLat;
  double  lonParY;
  double  lat1;
  double  lat2;
  double  xinc;
  double  yinc;
  int     projflag;
  int     scanflag;
  short   defined;
};

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// Lambert Conformal Conic 2
struct grid_lcc2_t {
  double  lon_0;
  double  lat_0;
  double  lat_1;
  double  lat_2;
  double  a;
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  short   defined;
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};

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// Lambert Azimuthal Equal Area
struct grid_laea_t {
  double  lon_0;
  double  lat_0;
  double  a;
  short   defined;
};

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// GME Grid
struct grid_gme_t {
  int     nd, ni, ni2, ni3;       /* parameter for GRID_GME         */
};

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// Rotated LonLat
struct grid_rll_t {
  double  xpole, ypole, angle;    /* rotated north pole             */
};

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struct grid_t {
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  int     self;
  int     type;                   /* grid type                      */
  int     prec;                   /* grid precision                 */
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  int     proj;                   /* grid projection                */
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  int     projtype;               /* grid projection type           */
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  mask_t *mask;
  mask_t *mask_gme;
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  double *area;
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  struct grid_lcc_t  lcc;
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  struct grid_lcc2_t lcc2;
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  struct grid_laea_t laea;
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  struct grid_gme_t  gme;
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  struct grid_rll_t  rll;
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  short   isCyclic;               /* TRUE for global cyclic grids   */
  short   isRotated;              /* TRUE for rotated grids         */
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  int     number, position;       /* parameter for GRID_REFERENCE   */
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  int     trunc;                  /* parameter for GRID_SPECTEAL    */
  int     nvertex;
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  char   *reference;
  unsigned char uuid[CDI_UUID_SIZE]; /* uuid for grid reference        */
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  int    *rowlon;
  int     nrowlon;
  int     size;
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  int     np;                     /* number of parallels between a pole and the equator */
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  bool    lcomplex;
  bool    hasdims;
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  char    vdimname[CDI_MAX_NAME];
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  char    mapname[CDI_MAX_NAME];
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  char    mapping[CDI_MAX_NAME];
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  char   *name;
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  struct gridaxis_t x;
  struct gridaxis_t y;
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  const struct gridVirtTable *vtable;
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  cdi_atts_t atts;
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};
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void grid_init(grid_t *gridptr);
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void cdiGridTypeInit(grid_t *gridptr, int gridtype, int size);
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void grid_free(grid_t *gridptr);
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grid_t *gridID2Ptr(int gridID);
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extern const struct gridVirtTable cdiGridVtable;
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unsigned cdiGridCount(void);
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const double *gridInqXvalsPtr(int gridID);
const double *gridInqYvalsPtr(int gridID);

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const double *gridInqXboundsPtr(int gridID);
const double *gridInqYboundsPtr(int gridID);
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const double *gridInqAreaPtr(int gridID);

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const char *gridInqReferencePtr(int gridID);

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int gridGenerate(const grid_t *grid);
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void cdiGridGetIndexList(unsigned, int * );
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void
gridUnpack(char * unpackBuffer, int unpackBufferSize,
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           int * unpackBufferPos, int originNamespace, void *context,
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           int force_id);

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struct addIfNewRes
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{
  int Id;
  int isNew;
};

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struct addIfNewRes cdiVlistAddGridIfNew(int vlistID, grid_t *grid, int mode);
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#endif
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/*
 * Local Variables:
 * c-file-style: "Java"
 * c-basic-offset: 2
 * indent-tabs-mode: nil
 * show-trailing-whitespace: t
 * require-trailing-newline: t
 * End:
 */