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Add helper function to determine the distance between two points

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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>
This commit is contained in:
Dirk Hohndel 2015-06-10 11:45:34 -07:00
parent 1ee447b5a9
commit d541c2b601
5 changed files with 36 additions and 2 deletions
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divesite.h
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@ -53,6 +53,7 @@ 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