MISR Toolkit  1.5.1
isin.h
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1 /******************************************************************************
2 NAME ISIN.H
3 
4 PURPOSE: Integerized Sinusoidal Library Header - constants, data
5  structures and prototypes for integerized sinusoidal library
6  functions.
7 
8 PROGRAMMER DATE REASON
9 ---------- ---- ------
10 Robert Wolfe (STX) 1-2-97 Initial version.
11 Raj Gejjagaraguppe (ARC) 1-15-97 Modified the code to work with
12  GCTP software.
13 
14 D*****************************************************************************/
15 
16 
17 #ifdef __cplusplus
18 extern "C" {
19 #endif
20 
21 /* Status returned */
22 
23 #define ISIN_SUCCESS 0 /* Successful return */
24 #define ISIN_ERROR -1 /* Error return */
25 #define ISIN_ERANGE -2 /* Input variable out of range */
26 
27 /* Data Structures */
28 
29 /* Row Type; Information for Eash Row (longitudinal band) in Projection */
30 
31 typedef struct {
32  long ncol; /* Number of columns */
33  long icol_cen; /* Column number to left of center of grid */
34  double ncol_inv; /* Number of columns inverse */
35 } Isin_row_t;
36 
37 /* Handle Type; Values assigned in 'Isin_init' */
38 
39 typedef struct {
40  double false_east; /* Northing at projection origin */
41  double false_north; /* Easting at projection origin */
42  double sphere; /* Sphere radius (user's units) */
43  double sphere_inv; /* Sphere radius inverse (user's units) */
44  double ang_size_inv; /* Grid angular resolution inverse (1/rad)*/
45  long nrow; /* Number of rows (longitudinal zones) */
46  long nrow_half; /* Half of number of rows (longitudinal zones)*/
47  double ref_lon; /* Zero reference longitude (rad) */
48  double lon_cen_mer; /* Longitude of central meridian (rad) */
49  int ijustify; /* Justify flag (see Isin_init) */
50  double col_dist; /* Distance for one column in projection
51  * (user's units) */
52  double col_dist_inv; /* Distance for one column in projection inverse
53  * (user's units) */
54  Isin_row_t *row; /* Row data structure */
55  long key; /* Data structure key */
56 } Isin_t;
57 
58 
59 /* Error Structure */
60 
61 typedef struct {
62  int num; /* Error number */
63  char *str; /* Error message */
64 } error_t;
65 
66 
67 /* Prototypes */
68 
69 /* Initialize integerized sinusoidal forward transformations */
70 
71 int isinusforinit(double , double, double, double, double, double);
72 
73 Isin_t *Isin_for_init(double , double, double, double, long, int);
74 
75 /* Initialize integerized sinusoidal inverse transformations */
76 
77 int isinusinvinit(double , double, double, double, double, double);
78 
79 Isin_t *Isin_inv_init(double , double, double, double, long, int);
80 
81 /* Forward mapping; converts geographic coordinates ('lon', 'lat')
82  * to map projection coordinates ('x', 'y') */
83 
84 int isinusfor(double, double, double *, double *);
85 
86 int Isin_fwd(const Isin_t *, double, double, double *, double *);
87 
88 /* Inverse mapping; converts map projection coordinates ('x', 'y') to
89  * geographic coordinates ('lon', 'lat') */
90 
91 int isinusinv(double, double, double *, double *);
92 
93 int Isin_inv(const Isin_t *, double, double, double *, double *);
94 
95 /* Deallocate the 'isin' data structure and array memory */
96 
97 int Isin_for_free(Isin_t *);
98 
99 int Isin_inv_free(Isin_t *);
100 
101 /* Private function to handle errors */
102 
103 static int Isin_error(const error_t *, const char *);
104 
105 
106 #ifdef __cplusplus
107 }
108 #endif
Isin_t * Isin_inv_init(double, double, double, double, long, int)
int isinusinv(double, double, double *, double *)
int Isin_inv(const Isin_t *, double, double, double *, double *)
Definition: isin.h:61
int isinusforinit(double, double, double, double, double, double)
int isinusfor(double, double, double *, double *)
static int Isin_error(const error_t *, const char *)
Definition: isin.h:39
HDFFCLIBAPI intf intf intf * num
Isin_t * Isin_for_init(double, double, double, double, long, int)
int Isin_for_free(Isin_t *)
int Isin_inv_free(Isin_t *)
int isinusinvinit(double, double, double, double, double, double)
int Isin_fwd(const Isin_t *, double, double, double *, double *)

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