PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ _lwt_GetEqualEdge()

static LWT_ELEMID _lwt_GetEqualEdge ( LWT_TOPOLOGY topo,
LWLINE edge 
)
static

Definition at line 5357 of file lwgeom_topo.c.

References _lwt_release_edges(), LWT_TOPOLOGY_T::be_iface, LWT_ISO_EDGE::edge_id, LWT_ISO_EDGE::geom, lwerror(), LWGEOM2GEOS(), lwgeom_geos_errmsg, lwgeom_geos_error(), lwgeom_get_bbox(), lwline_as_lwgeom(), lwnotice(), lwt_be_getEdgeWithinBox2D(), lwt_be_lastErrorMessage(), LWT_COL_EDGE_EDGE_ID, and LWT_COL_EDGE_GEOM.

Referenced by _lwt_AddLineEdge().

5358 {
5359  LWT_ELEMID id;
5360  LWT_ISO_EDGE *edges;
5361  int num, i;
5362  const GBOX *qbox = lwgeom_get_bbox( lwline_as_lwgeom(edge) );
5363  GEOSGeometry *edgeg;
5364  const int flds = LWT_COL_EDGE_EDGE_ID|LWT_COL_EDGE_GEOM;
5365 
5366  edges = lwt_be_getEdgeWithinBox2D( topo, qbox, &num, flds, 0 );
5367  if ( num == -1 )
5368  {
5369  lwerror("Backend error: %s", lwt_be_lastErrorMessage(topo->be_iface));
5370  return -1;
5371  }
5372  if ( num )
5373  {
5374  initGEOS(lwnotice, lwgeom_geos_error);
5375 
5376  edgeg = LWGEOM2GEOS( lwline_as_lwgeom(edge), 0 );
5377  if ( ! edgeg )
5378  {
5379  _lwt_release_edges(edges, num);
5380  lwerror("Could not convert edge geometry to GEOS: %s", lwgeom_geos_errmsg);
5381  return -1;
5382  }
5383  for (i=0; i<num; ++i)
5384  {
5385  LWT_ISO_EDGE *e = &(edges[i]);
5386  LWGEOM *g = lwline_as_lwgeom(e->geom);
5387  GEOSGeometry *gg;
5388  int equals;
5389  gg = LWGEOM2GEOS( g, 0 );
5390  if ( ! gg )
5391  {
5392  GEOSGeom_destroy(edgeg);
5393  _lwt_release_edges(edges, num);
5394  lwerror("Could not convert edge geometry to GEOS: %s", lwgeom_geos_errmsg);
5395  return -1;
5396  }
5397  equals = GEOSEquals(gg, edgeg);
5398  GEOSGeom_destroy(gg);
5399  if ( equals == 2 )
5400  {
5401  GEOSGeom_destroy(edgeg);
5402  _lwt_release_edges(edges, num);
5403  lwerror("GEOSEquals exception: %s", lwgeom_geos_errmsg);
5404  return -1;
5405  }
5406  if ( equals )
5407  {
5408  id = e->edge_id;
5409  GEOSGeom_destroy(edgeg);
5410  _lwt_release_edges(edges, num);
5411  return id;
5412  }
5413  }
5414  GEOSGeom_destroy(edgeg);
5415  _lwt_release_edges(edges, num);
5416  }
5417 
5418  return 0;
5419 }
void lwnotice(const char *fmt,...)
Write a notice out to the notice handler.
Definition: lwutil.c:89
char lwgeom_geos_errmsg[LWGEOM_GEOS_ERRMSG_MAXSIZE]
LWLINE * geom
LWGEOM * lwline_as_lwgeom(const LWLINE *obj)
Definition: lwgeom.c:262
void lwgeom_geos_error(const char *fmt,...)
const LWT_BE_IFACE * be_iface
const GBOX * lwgeom_get_bbox(const LWGEOM *lwgeom)
Get a non-empty geometry bounding box, computing and caching it if not already there.
Definition: lwgeom.c:653
LWT_ELEMID edge_id
GEOSGeometry * LWGEOM2GEOS(const LWGEOM *lwgeom, int autofix)
#define LWT_COL_EDGE_EDGE_ID
Edge fields.
static void _lwt_release_edges(LWT_ISO_EDGE *edges, int num_edges)
Definition: lwgeom_topo.c:467
LWT_INT64 LWT_ELEMID
Identifier of topology element.
#define LWT_COL_EDGE_GEOM
static LWT_ISO_EDGE * lwt_be_getEdgeWithinBox2D(const LWT_TOPOLOGY *topo, const GBOX *box, int *numelems, int fields, int limit)
Definition: lwgeom_topo.c:179
const char * lwt_be_lastErrorMessage(const LWT_BE_IFACE *be)
Definition: lwgeom_topo.c:120
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:102
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