PostGIS  2.5.7dev-r@@SVN_REVISION@@

◆ _lwt_GetEqualEdge()

static LWT_ELEMID _lwt_GetEqualEdge ( LWT_TOPOLOGY topo,
LWLINE edge 
)
static

Definition at line 5229 of file lwgeom_topo.c.

5230 {
5231  LWT_ELEMID id;
5232  LWT_ISO_EDGE *edges;
5233  int num, i;
5234  const GBOX *qbox = lwgeom_get_bbox( lwline_as_lwgeom(edge) );
5235  GEOSGeometry *edgeg;
5236  const int flds = LWT_COL_EDGE_EDGE_ID|LWT_COL_EDGE_GEOM;
5237 
5238  edges = lwt_be_getEdgeWithinBox2D( topo, qbox, &num, flds, 0 );
5239  if ( num == -1 )
5240  {
5241  lwerror("Backend error: %s", lwt_be_lastErrorMessage(topo->be_iface));
5242  return -1;
5243  }
5244  if ( num )
5245  {
5246  initGEOS(lwnotice, lwgeom_geos_error);
5247 
5248  edgeg = LWGEOM2GEOS( lwline_as_lwgeom(edge), 0 );
5249  if ( ! edgeg )
5250  {
5251  _lwt_release_edges(edges, num);
5252  lwerror("Could not convert edge geometry to GEOS: %s", lwgeom_geos_errmsg);
5253  return -1;
5254  }
5255  for (i=0; i<num; ++i)
5256  {
5257  LWT_ISO_EDGE *e = &(edges[i]);
5258  LWGEOM *g = lwline_as_lwgeom(e->geom);
5259  GEOSGeometry *gg;
5260  int equals;
5261  gg = LWGEOM2GEOS( g, 0 );
5262  if ( ! gg )
5263  {
5264  GEOSGeom_destroy(edgeg);
5265  _lwt_release_edges(edges, num);
5266  lwerror("Could not convert edge geometry to GEOS: %s", lwgeom_geos_errmsg);
5267  return -1;
5268  }
5269  equals = GEOSEquals(gg, edgeg);
5270  GEOSGeom_destroy(gg);
5271  if ( equals == 2 )
5272  {
5273  GEOSGeom_destroy(edgeg);
5274  _lwt_release_edges(edges, num);
5275  lwerror("GEOSEquals exception: %s", lwgeom_geos_errmsg);
5276  return -1;
5277  }
5278  if ( equals )
5279  {
5280  id = e->edge_id;
5281  GEOSGeom_destroy(edgeg);
5282  _lwt_release_edges(edges, num);
5283  return id;
5284  }
5285  }
5286  GEOSGeom_destroy(edgeg);
5287  _lwt_release_edges(edges, num);
5288  }
5289 
5290  return 0;
5291 }
char lwgeom_geos_errmsg[LWGEOM_GEOS_ERRMSG_MAXSIZE]
GEOSGeometry * LWGEOM2GEOS(const LWGEOM *lwgeom, uint8_t autofix)
void lwgeom_geos_error(const char *fmt,...)
LWGEOM * lwline_as_lwgeom(const LWLINE *obj)
Definition: lwgeom.c:330
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:734
LWT_INT64 LWT_ELEMID
Identifier of topology element.
#define LWT_COL_EDGE_EDGE_ID
Edge fields.
#define LWT_COL_EDGE_GEOM
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:190
void lwnotice(const char *fmt,...)
Write a notice out to the notice handler.
Definition: lwutil.c:177
const char * lwt_be_lastErrorMessage(const LWT_BE_IFACE *be)
Definition: lwgeom_topo.c:120
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
static void _lwt_release_edges(LWT_ISO_EDGE *edges, int num_edges)
Definition: lwgeom_topo.c:457
LWLINE * geom
LWT_ELEMID edge_id
const LWT_BE_IFACE * be_iface

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().

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