PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ parse_geojson_multipolygon()

static LWGEOM* parse_geojson_multipolygon ( json_object *  geojson,
int *  hasz,
int  root_srid 
)
static

Definition at line 377 of file lwin_geojson.c.

References findMemberByName(), geojson_lwerror(), lwcollection_construct_empty(), lwgeom_has_m(), lwgeom_has_z(), lwmpoly_add_lwpoly(), lwpoly_add_ring(), lwpoly_construct_empty(), MULTIPOLYGONTYPE, parse_geojson_coord(), ptarray_construct_empty(), and LWGEOM::srid.

Referenced by parse_geojson().

378 {
379  LWGEOM *geom = NULL;
380  int i, j, k;
381  json_object* poObjPolys = NULL;
382 
383  if (!root_srid)
384  {
385  geom = (LWGEOM *)lwcollection_construct_empty(MULTIPOLYGONTYPE, root_srid, 1, 0);
386  }
387  else
388  {
390  }
391 
392  poObjPolys = findMemberByName( geojson, "coordinates" );
393  if ( ! poObjPolys )
394  {
395  geojson_lwerror("Unable to find 'coordinates' in GeoJSON string", 4);
396  return NULL;
397  }
398 
399  if( json_type_array == json_object_get_type( poObjPolys ) )
400  {
401  const int nPolys = json_object_array_length( poObjPolys );
402 
403  for(i = 0; i < nPolys; ++i)
404  {
405  json_object* poObjPoly = json_object_array_get_idx( poObjPolys, i );
406 
407  if( json_type_array == json_object_get_type( poObjPoly ) )
408  {
409  LWPOLY *lwpoly = lwpoly_construct_empty(geom->srid, lwgeom_has_z(geom), lwgeom_has_m(geom));
410  int nRings = json_object_array_length( poObjPoly );
411 
412  for(j = 0; j < nRings; ++j)
413  {
414  json_object* points = json_object_array_get_idx( poObjPoly, j );
415 
416  if( json_type_array == json_object_get_type( points ) )
417  {
418 
419  POINTARRAY *pa = ptarray_construct_empty(1, 0, 1);
420 
421  int nPoints = json_object_array_length( points );
422  for ( k=0; k < nPoints; k++ )
423  {
424  json_object* coords = json_object_array_get_idx( points, k );
425  parse_geojson_coord(coords, hasz, pa);
426  }
427 
428  lwpoly_add_ring(lwpoly, pa);
429  }
430  }
431  geom = (LWGEOM*)lwmpoly_add_lwpoly((LWMPOLY*)geom, lwpoly);
432  }
433  }
434  }
435 
436  return geom;
437 }
POINTARRAY * ptarray_construct_empty(char hasz, char hasm, uint32_t maxpoints)
Create a new POINTARRAY with no points.
Definition: ptarray.c:70
static void geojson_lwerror(char *msg, int error_code)
Definition: lwin_geojson.c:49
static int parse_geojson_coord(json_object *poObj, int *hasz, POINTARRAY *pa)
Definition: lwin_geojson.c:97
int lwgeom_has_z(const LWGEOM *geom)
Return LW_TRUE if geometry has Z ordinates.
Definition: lwgeom.c:849
int32_t srid
Definition: liblwgeom.h:398
#define MULTIPOLYGONTYPE
Definition: liblwgeom.h:89
static json_object * findMemberByName(json_object *poObj, const char *pszName)
Definition: lwin_geojson.c:59
LWPOLY * lwpoly_construct_empty(int srid, char hasz, char hasm)
Definition: lwpoly.c:139
int lwpoly_add_ring(LWPOLY *poly, POINTARRAY *pa)
Add a ring, allocating extra space if necessary.
Definition: lwpoly.c:227
LWCOLLECTION * lwcollection_construct_empty(uint8_t type, int srid, char hasz, char hasm)
Definition: lwcollection.c:94
int lwgeom_has_m(const LWGEOM *geom)
Return LW_TRUE if geometry has M ordinates.
Definition: lwgeom.c:856
LWMPOLY * lwmpoly_add_lwpoly(LWMPOLY *mobj, const LWPOLY *obj)
Definition: lwmpoly.c:47
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