subsurface/divesite.h
Dirk Hohndel d541c2b601 Add helper function to determine the distance between two points
And use this to find a dive site within a certain radius of a GPS fix.
This will be used to figure out if dive sites might be the same.

This uses a new Qt5 component (Positioning) which was added in Qt5.2.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-06-10 11:51:15 -07:00

62 lines
1.5 KiB
C

#ifndef DIVESITE_H
#define DIVESITE_H
#include "units.h"
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#else
#include <stdbool.h>
#endif
struct dive_site
{
uint32_t uuid;
char *name;
degrees_t latitude, longitude;
char *description;
char *notes;
};
struct dive_site_table {
int nr, allocated;
struct dive_site **dive_sites;
};
extern struct dive_site_table dive_site_table;
static inline struct dive_site *get_dive_site(int nr)
{
if (nr >= dive_site_table.nr || nr < 0)
return NULL;
return dive_site_table.dive_sites[nr];
}
/* iterate over each dive site */
#define for_each_dive_site(_i, _x) \
for ((_i) = 0; ((_x) = get_dive_site(_i)) != NULL; (_i)++)
static inline struct dive_site *get_dive_site_by_uuid(uint32_t uuid)
{
int i;
struct dive_site *ds;
for_each_dive_site (i, ds)
if (ds->uuid == uuid)
return get_dive_site(i);
return NULL;
}
struct dive_site *alloc_dive_site();
void delete_dive_site(uint32_t id);
uint32_t create_dive_site(const char *name);
uint32_t create_dive_site_with_gps(const char *name, degrees_t latitude, degrees_t longitude);
uint32_t get_dive_site_uuid_by_name(const char *name, struct dive_site **dsp);
uint32_t get_dive_site_uuid_by_gps(degrees_t latitude, degrees_t longitude, struct dive_site **dsp);
uint32_t get_dive_site_uuid_by_gps_proximity(degrees_t latitude, degrees_t longitude, int distance, struct dive_site **dsp);
bool dive_site_is_empty(struct dive_site *ds);
#ifdef __cplusplus
}
#endif
#endif // DIVESITE_H