spatialite_sys

Function gaiaConvexHull_r

Source 
pub unsafe extern "C" fn gaiaConvexHull_r(
    p_cache: *const c_void,
    geom: gaiaGeomCollPtr,
) -> gaiaGeomCollPtr
Expand description

Spatial operator: ConvexHull

\param p_cache a memory pointer returned by spatialite_alloc_connection() \param geom the input Geometry object

\return the pointer to newly created Geometry object representing the ConvexHull of input Geometry: NULL on failure.

\sa gaiaConvexHull, gaiaFreeGeomColl

\note you are responsible to destroy (before or after) any allocated Geometry, this including any Geometry returned by gaiaConvexHull_r()\n reentrant and thread-safe.

\remark \b GEOS support required.