PostGIS  2.1.10dev-r@@SVN_REVISION@@
static LWGEOM* parse_geojson_multipolygon ( json_object *  geojson,
int *  hasz,
int  root_srid 
)
static

Definition at line 361 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().

362 {
363  LWGEOM *geom = NULL;
364  int i, j, k;
365  json_object* poObjPolys = NULL;
366 
367  if (!root_srid)
368  {
369  geom = (LWGEOM *)lwcollection_construct_empty(MULTIPOLYGONTYPE, root_srid, 1, 0);
370  }
371  else
372  {
374  }
375 
376  poObjPolys = findMemberByName( geojson, "coordinates" );
377  if ( ! poObjPolys )
378  {
379  geojson_lwerror("Unable to find 'coordinates' in GeoJSON string", 4);
380  return NULL;
381  }
382 
383  if( json_type_array == json_object_get_type( poObjPolys ) )
384  {
385  const int nPolys = json_object_array_length( poObjPolys );
386 
387  for(i = 0; i < nPolys; ++i)
388  {
389  json_object* poObjPoly = json_object_array_get_idx( poObjPolys, i );
390 
391  if( json_type_array == json_object_get_type( poObjPoly ) )
392  {
393  LWPOLY *lwpoly = lwpoly_construct_empty(geom->srid, lwgeom_has_z(geom), lwgeom_has_m(geom));
394  int nRings = json_object_array_length( poObjPoly );
395 
396  for(j = 0; j < nRings; ++j)
397  {
398  json_object* points = json_object_array_get_idx( poObjPoly, j );
399 
400  if( json_type_array == json_object_get_type( points ) )
401  {
402 
403  POINTARRAY *pa = ptarray_construct_empty(1, 0, 1);
404 
405  int nPoints = json_object_array_length( points );
406  for ( k=0; k < nPoints; k++ )
407  {
408  json_object* coords = json_object_array_get_idx( points, k );
409  parse_geojson_coord(coords, hasz, pa);
410  }
411 
412  lwpoly_add_ring(lwpoly, pa);
413  }
414  }
415  geom = (LWGEOM*)lwmpoly_add_lwpoly((LWMPOLY*)geom, lwpoly);
416  }
417  }
418  }
419 
420  return geom;
421 }
POINTARRAY * ptarray_construct_empty(char hasz, char hasm, uint32_t maxpoints)
Create a new POINTARRAY with no points.
Definition: ptarray.c:57
static void geojson_lwerror(char *msg, int error_code)
Definition: lwin_geojson.c:36
static int parse_geojson_coord(json_object *poObj, int *hasz, POINTARRAY *pa)
Definition: lwin_geojson.c:84
int lwgeom_has_z(const LWGEOM *geom)
Return LW_TRUE if geometry has Z ordinates.
Definition: lwgeom.c:792
int32_t srid
Definition: liblwgeom.h:355
LWGEOM * geom
#define MULTIPOLYGONTYPE
Definition: liblwgeom.h:65
static json_object * findMemberByName(json_object *poObj, const char *pszName)
Definition: lwin_geojson.c:46
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:799
LWMPOLY * lwmpoly_add_lwpoly(LWMPOLY *mobj, const LWPOLY *obj)
Definition: lwmpoly.c:34

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