[−][src]Function spatialite_sys::gaiaGeomCollSimplify_r
pub unsafe extern "C" fn gaiaGeomCollSimplify_r(
p_cache: *const c_void,
geom: gaiaGeomCollPtr,
tolerance: f64
) -> gaiaGeomCollPtr
Spatial operator: Simplify
\param p_cache a memory pointer returned by spatialite_alloc_connection() \param geom the input Geometry object \param tolerance approximation threshold
\return the pointer to newly created Geometry object representing the simplified Geometry [applying the Douglas-Peucker algorithm]: NULL on failure.
\sa gaiaGeomCollSimplify, gaiaFreeGeomColl, gaiaGeomCollSimplifyPreserveTopology
\note you are responsible to destroy (before or after) any allocated Geometry, this including any Geometry returned by gaiaGeomCollSimplify_r()\n reentrant and thread safe.
\remark \b GEOS support required.