PostGIS  2.2.8dev-r@@SVN_REVISION@@

◆ parse_geojson_multipolygon()

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

Definition at line 363 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().

364 {
365  LWGEOM *geom = NULL;
366  int i, j, k;
367  json_object* poObjPolys = NULL;
368 
369  if (!root_srid)
370  {
371  geom = (LWGEOM *)lwcollection_construct_empty(MULTIPOLYGONTYPE, root_srid, 1, 0);
372  }
373  else
374  {
376  }
377 
378  poObjPolys = findMemberByName( geojson, "coordinates" );
379  if ( ! poObjPolys )
380  {
381  geojson_lwerror("Unable to find 'coordinates' in GeoJSON string", 4);
382  return NULL;
383  }
384 
385  if( json_type_array == json_object_get_type( poObjPolys ) )
386  {
387  const int nPolys = json_object_array_length( poObjPolys );
388 
389  for(i = 0; i < nPolys; ++i)
390  {
391  json_object* poObjPoly = json_object_array_get_idx( poObjPolys, i );
392 
393  if( json_type_array == json_object_get_type( poObjPoly ) )
394  {
395  LWPOLY *lwpoly = lwpoly_construct_empty(geom->srid, lwgeom_has_z(geom), lwgeom_has_m(geom));
396  int nRings = json_object_array_length( poObjPoly );
397 
398  for(j = 0; j < nRings; ++j)
399  {
400  json_object* points = json_object_array_get_idx( poObjPoly, j );
401 
402  if( json_type_array == json_object_get_type( points ) )
403  {
404 
405  POINTARRAY *pa = ptarray_construct_empty(1, 0, 1);
406 
407  int nPoints = json_object_array_length( points );
408  for ( k=0; k < nPoints; k++ )
409  {
410  json_object* coords = json_object_array_get_idx( points, k );
411  parse_geojson_coord(coords, hasz, pa);
412  }
413 
414  lwpoly_add_ring(lwpoly, pa);
415  }
416  }
417  geom = (LWGEOM*)lwmpoly_add_lwpoly((LWMPOLY*)geom, lwpoly);
418  }
419  }
420  }
421 
422  return geom;
423 }
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:35
static int parse_geojson_coord(json_object *poObj, int *hasz, POINTARRAY *pa)
Definition: lwin_geojson.c:83
int lwgeom_has_z(const LWGEOM *geom)
Return LW_TRUE if geometry has Z ordinates.
Definition: lwgeom.c:836
int32_t srid
Definition: liblwgeom.h:383
#define MULTIPOLYGONTYPE
Definition: liblwgeom.h:75
static json_object * findMemberByName(json_object *poObj, const char *pszName)
Definition: lwin_geojson.c:45
LWPOLY * lwpoly_construct_empty(int srid, char hasz, char hasm)
Definition: lwpoly.c:66
int lwpoly_add_ring(LWPOLY *poly, POINTARRAY *pa)
Add a ring, allocating extra space if necessary.
Definition: lwpoly.c:154
LWCOLLECTION * lwcollection_construct_empty(uint8_t type, int srid, char hasz, char hasm)
Definition: lwcollection.c:81
int lwgeom_has_m(const LWGEOM *geom)
Return LW_TRUE if geometry has M ordinates.
Definition: lwgeom.c:843
LWMPOLY * lwmpoly_add_lwpoly(LWMPOLY *mobj, const LWPOLY *obj)
Definition: lwmpoly.c:34
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