PostGIS  2.5.1dev-r@@SVN_REVISION@@

◆ ST_DelaunayTriangles()

Datum ST_DelaunayTriangles ( PG_FUNCTION_ARGS  )

Definition at line 3091 of file postgis/lwgeom_geos.c.

References dumpnode::geom, geometry_serialize(), lwgeom_delaunay_triangulation(), lwgeom_free(), lwgeom_from_gserialized(), PG_FUNCTION_INFO_V1(), and ST_Snap().

Referenced by ST_BuildArea().

3092 {
3093  GSERIALIZED *result;
3094  GSERIALIZED *geom;
3095  LWGEOM *lwgeom_in, *lwgeom_out;
3096  double tolerance = 0.0;
3097  int flags = 0;
3098 
3099  geom = PG_GETARG_GSERIALIZED_P(0);
3100  tolerance = PG_GETARG_FLOAT8(1);
3101  flags = PG_GETARG_INT32(2);
3102 
3103  lwgeom_in = lwgeom_from_gserialized(geom);
3104  lwgeom_out = lwgeom_delaunay_triangulation(lwgeom_in, tolerance, flags);
3105  lwgeom_free(lwgeom_in) ;
3106 
3107  if ( ! lwgeom_out )
3108  {
3109  PG_FREE_IF_COPY(geom, 0);
3110  PG_RETURN_NULL();
3111  }
3112 
3113  result = geometry_serialize(lwgeom_out) ;
3114  lwgeom_free(lwgeom_out) ;
3115 
3116  PG_FREE_IF_COPY(geom, 0);
3117  PG_RETURN_POINTER(result);
3118 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1144
LWGEOM * lwgeom_delaunay_triangulation(const LWGEOM *geom, double tolerance, int32_t edgeOnly)
Take vertices of a geometry and build a delaunay triangulation on them.
LWGEOM * geom
GSERIALIZED * geometry_serialize(LWGEOM *lwgeom)
Here is the call graph for this function:
Here is the caller graph for this function: