PostGIS  2.5.0dev-r@@SVN_REVISION@@

◆ parse_geojson_multipolygon()

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

Definition at line 383 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().

384 {
385  LWGEOM *geom = NULL;
386  int i, j, k;
387  json_object* poObjPolys = NULL;
388 
389  if (!root_srid)
390  {
391  geom = (LWGEOM *)lwcollection_construct_empty(MULTIPOLYGONTYPE, root_srid, 1, 0);
392  }
393  else
394  {
396  }
397 
398  poObjPolys = findMemberByName( geojson, "coordinates" );
399  if ( ! poObjPolys )
400  {
401  geojson_lwerror("Unable to find 'coordinates' in GeoJSON string", 4);
402  return NULL;
403  }
404 
405  if( json_type_array == json_object_get_type( poObjPolys ) )
406  {
407  const int nPolys = json_object_array_length( poObjPolys );
408 
409  for(i = 0; i < nPolys; ++i)
410  {
411  json_object* poObjPoly = json_object_array_get_idx( poObjPolys, i );
412 
413  if( json_type_array == json_object_get_type( poObjPoly ) )
414  {
415  LWPOLY *lwpoly = lwpoly_construct_empty(geom->srid, lwgeom_has_z(geom), lwgeom_has_m(geom));
416  int nRings = json_object_array_length( poObjPoly );
417 
418  for(j = 0; j < nRings; ++j)
419  {
420  json_object* points = json_object_array_get_idx( poObjPoly, j );
421 
422  if( json_type_array == json_object_get_type( points ) )
423  {
424 
425  POINTARRAY *pa = ptarray_construct_empty(1, 0, 1);
426 
427  int nPoints = json_object_array_length( points );
428  for ( k=0; k < nPoints; k++ )
429  {
430  json_object* coords = json_object_array_get_idx( points, k );
431  parse_geojson_coord(coords, hasz, pa);
432  }
433 
434  lwpoly_add_ring(lwpoly, pa);
435  }
436  }
437  geom = (LWGEOM*)lwmpoly_add_lwpoly((LWMPOLY*)geom, lwpoly);
438  }
439  }
440  }
441 
442  return geom;
443 }
static void geojson_lwerror(char *msg, __attribute__((__unused__)) int error_code)
Definition: lwin_geojson.c:55
POINTARRAY * ptarray_construct_empty(char hasz, char hasm, uint32_t maxpoints)
Create a new POINTARRAY with no points.
Definition: ptarray.c:70
static int parse_geojson_coord(json_object *poObj, int *hasz, POINTARRAY *pa)
Definition: lwin_geojson.c:103
int lwgeom_has_z(const LWGEOM *geom)
Return LW_TRUE if geometry has Z ordinates.
Definition: lwgeom.c:930
int32_t srid
Definition: liblwgeom.h:401
#define MULTIPOLYGONTYPE
Definition: liblwgeom.h:89
static json_object * findMemberByName(json_object *poObj, const char *pszName)
Definition: lwin_geojson.c:65
LWPOLY * lwpoly_construct_empty(int srid, char hasz, char hasm)
Definition: lwpoly.c:161
int lwpoly_add_ring(LWPOLY *poly, POINTARRAY *pa)
Add a ring, allocating extra space if necessary.
Definition: lwpoly.c:247
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:937
LWMPOLY * lwmpoly_add_lwpoly(LWMPOLY *mobj, const LWPOLY *obj)
Definition: lwmpoly.c:47
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