srtm.h

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/* kate: indent-mode cstyle; tab-width 4; indent-width 4; */
#ifndef __GSRTM_DATA_H__
#define __GSRTM_DATA_H__

#include <glib-object.h>
#include <cfe/gpstypes.h>

#define NO_ELEVATION_AVAILABLE ((gfloat)NAN)
#define IS_ELEVATION(v) (isnormal(v))

#define SRTM_TYPE_DATA                          (srtm_data_get_type())
#define SRTM_DATA(obj)                          (G_TYPE_CHECK_INSTANCE_CAST((obj), SRTM_TYPE_DATA, SrtmData))
#define SRTM_IS_DATA(obj)                       (G_TYPE_CHECK_INSTANCE_TYPE((obj), SRTM_TYPE_DATA))
#define SRTM_DATA_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST((klass), SRTM_TYPE_DATA, SrtmDataClass))
#define SRTM_IS_DATA_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE((klass), SRTM_TYPE_DATA))
#define SRTM_DATA_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS((obj), SRTM_TYPE_DATA, SrtmDataClass))

typedef struct _SrtmData SrtmData;
typedef struct _SrtmDataClass SrtmDataClass;
typedef struct _SrtmDataPrivate SrtmDataPrivate;

struct _SrtmData
{
        /* Parent instance structure */
        GObject parent_instance;

        /* instance members */
        SrtmDataPrivate *priv;
};

struct _SrtmDataClass
{
        /* Parent class structure */
        GObjectClass parent_class;

        /* class members */
};

/* used by SRTM_TYPE_DATA */
GType srtm_data_get_type(void);

/*
 * Method definitions.
 */
SrtmData *srtm_data_new(void);
gboolean srtm_cache_tile(SrtmData *self, lat_t lat, lng_t lnt);
gfloat srtm_get_elevation(SrtmData *self, lat_t lat, lng_t lng);

#endif /* __GSRTM_DATA_H__ */