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postgis/lwgeom/lwgeom_jts.c
Sandro Santilli 3a64541225 Commented out debugging lines 
git-svn-id: http://svn.osgeo.org/postgis/trunk@1513 b70326c6-7e19-0410-871a-916f4a2858ee
2005-03-08 11:24:39 +00:00

2598 lines
52 KiB
C
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#include "postgres.h"
#include "utils/array.h"
#include "utils/builtins.h"
#include "fmgr.h"
#include "lwgeom_pg.h"
#include "liblwgeom.h"
#include "profile.h"
#include "wktparse.h"
Datum relate_full(PG_FUNCTION_ARGS);
Datum relate_pattern(PG_FUNCTION_ARGS);
Datum disjoint(PG_FUNCTION_ARGS);
Datum touches(PG_FUNCTION_ARGS);
Datum intersects(PG_FUNCTION_ARGS);
Datum crosses(PG_FUNCTION_ARGS);
Datum within(PG_FUNCTION_ARGS);
Datum contains(PG_FUNCTION_ARGS);
Datum overlaps(PG_FUNCTION_ARGS);
Datum isvalid(PG_FUNCTION_ARGS);
Datum buffer(PG_FUNCTION_ARGS);
Datum intersection(PG_FUNCTION_ARGS);
Datum convexhull(PG_FUNCTION_ARGS);
Datum difference(PG_FUNCTION_ARGS);
Datum boundary(PG_FUNCTION_ARGS);
Datum symdifference(PG_FUNCTION_ARGS);
Datum geomunion(PG_FUNCTION_ARGS);
Datum unite_garray(PG_FUNCTION_ARGS);
Datum issimple(PG_FUNCTION_ARGS);
Datum isring(PG_FUNCTION_ARGS);
Datum geomequals(PG_FUNCTION_ARGS);
Datum pointonsurface(PG_FUNCTION_ARGS);
Datum JTSnoop(PG_FUNCTION_ARGS);
Datum postgis_geos_version(PG_FUNCTION_ARGS);
Datum centroid(PG_FUNCTION_ARGS);
Datum JTS_polygonize_garray(PG_FUNCTION_ARGS);
/*
* Define this to have have many notices printed
* during postgis->geos and geos->postgis conversions
*/
//#define PGIS_DEBUG_CONVERTER 1
#ifdef PGIS_DEBUG_CONVERTER
#define PGIS_DEBUG_POSTGIS2JTS 1
#define PGIS_DEBUG_JTS2POSTGIS 1
#endif // PGIS_DEBUG_CONVERTER
//#define PGIS_DEBUG 1
/*
* If you're having problems with JTS<->POSTGIS conversions
* you can define these to use WKT
*/
#define WKT_J2P 0
#define WKT_P2J 0
typedef void (*noticefunc)(const char *fmt, ...);
typedef struct JTSGeometry JTSGeometry;
extern const char * createJTSPoint(POINT3D *pt);
extern void initJTS(noticefunc);
extern void finishJTS(void);
extern char *JTSrelate(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSrelatePattern(JTSGeometry *g1, JTSGeometry*g2,char *pat);
extern char JTSrelateDisjoint(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSrelateTouches(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSrelateIntersects(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSrelateCrosses(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSrelateWithin(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSrelateContains(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSrelateOverlaps(JTSGeometry *g1, JTSGeometry*g2);
extern char *JTSasText(JTSGeometry *g1);
extern char JTSisEmpty(JTSGeometry *g1);
extern char *JTSGeometryType(JTSGeometry *g1);
extern int JTSGeometryTypeId(JTSGeometry *g1);
extern char *JTSversion();
extern char *JTSjtsport();
extern char JTSisvalid(JTSGeometry *g1);
extern JTSGeometry *JTSIntersection(JTSGeometry *g1, JTSGeometry *g2);
extern JTSGeometry *JTSBuffer(JTSGeometry *g1,double width, int quadsegs);
extern JTSGeometry *JTSConvexHull(JTSGeometry *g1);
extern JTSGeometry *JTSDifference(JTSGeometry *g1,JTSGeometry *g2);
extern JTSGeometry *JTSBoundary(JTSGeometry *g1);
extern JTSGeometry *JTSSymDifference(JTSGeometry *g1,JTSGeometry *g2);
extern JTSGeometry *JTSUnion(JTSGeometry *g1,JTSGeometry *g2);
extern char JTSequals(JTSGeometry *g1, JTSGeometry*g2);
extern char JTSisSimple(JTSGeometry *g1);
extern char JTSisRing(JTSGeometry *g1);
extern JTSGeometry *JTSpointonSurface(JTSGeometry *g1);
extern JTSGeometry *JTSGetCentroid(JTSGeometry *g, int *failure);
extern bool JTSHasZ(JTSGeometry *g1);
extern void JTSSetSRID(JTSGeometry *g, int SRID);
extern void JTSdeleteChar(char *a);
extern POINT3D *JTSGetCoordinate(JTSGeometry *g1);
extern POINT3D *JTSGetCoordinates(JTSGeometry *g1);
extern int JTSGetNumCoordinate(JTSGeometry *g1);
extern JTSGeometry *JTSGetGeometryN(JTSGeometry *g1, int n);
extern JTSGeometry *JTSGetExteriorRing(JTSGeometry *g1);
extern JTSGeometry *JTSGetInteriorRingN(JTSGeometry *g1,int n);
extern JTSGeometry *JTSpolygonize(JTSGeometry **geoms, unsigned int ngeoms);
extern int JTSGetNumInteriorRings(JTSGeometry *g1);
extern int JTSGetSRID(JTSGeometry *g1);
extern int JTSGetNumGeometries(JTSGeometry *g1);
extern JTSGeometry *PostGIS2JTS_point(const LWPOINT *point);
extern JTSGeometry *PostGIS2JTS_linestring(const LWLINE *line);
extern JTSGeometry *PostGIS2JTS_polygon(const LWPOLY *polygon);
extern JTSGeometry *PostGIS2JTS_multipolygon(LWPOLY **geoms, uint32 ngeoms, int SRID, int is3d);
extern JTSGeometry *PostGIS2JTS_multilinestring(LWLINE **geoms, uint32 ngeoms, int SRID, int is3d);
extern JTSGeometry *PostGIS2JTS_multipoint(LWPOINT **geoms, uint32 ngeoms, int SRID, int is3d);
extern JTSGeometry *PostGIS2JTS_collection(int type, JTSGeometry **geoms, int ngeoms, int SRID, bool is3d);
extern JTSGeometry *JTSGeometryFromWKT(const char *wkt);
PG_LWGEOM *JTS2POSTGIS(JTSGeometry *geom, char want3d);
JTSGeometry * POSTGIS2JTS(PG_LWGEOM *g);
JTSGeometry * LWGEOM2JTS(LWGEOM *g);
void errorIfJTSGeometryCollection(PG_LWGEOM *g1, PG_LWGEOM *g2);
LWPOINT *lwpoint_from_geometry(JTSGeometry *g, char want3d);
LWLINE *lwline_from_geometry(JTSGeometry *g, char want3d);
LWPOLY *lwpoly_from_geometry(JTSGeometry *g, char want3d);
LWCOLLECTION *lwcollection_from_geometry(JTSGeometry *geom, char want3d);
LWGEOM *JTS2LWGEOM(JTSGeometry *g, char want3d);
/*
* This is the final function for union/fastunite/geomunion
* aggregate (still discussing the name). Will have
* as input an array of JTSGeometry objects.
* Will iteratively call JTSUnion on the JTS-converted
* versions of them and return PGIS-converted version back.
* Changing combination order *might* speed up performance.
*
*/
PG_FUNCTION_INFO_V1(unite_garray);
Datum unite_garray(PG_FUNCTION_ARGS)
{
Datum datum;
ArrayType *array;
int is3d = 0;
int nelems, i;
PG_LWGEOM *result, *pgis_geom;
JTSGeometry *g1, *g2, *geos_result=NULL;
int SRID=-1;
size_t offset;
#ifdef PGIS_DEBUG
static int call=1;
#endif
#ifdef PGIS_DEBUG
call++;
#endif
//lwnotice("unite_garray (jts) invoked");
datum = PG_GETARG_DATUM(0);
/* Null array, null geometry (should be empty?) */
if ( (Pointer *)datum == NULL ) PG_RETURN_NULL();
array = (ArrayType *) PG_DETOAST_DATUM(datum);
nelems = ArrayGetNItems(ARR_NDIM(array), ARR_DIMS(array));
#ifdef PGIS_DEBUG
elog(NOTICE, "unite_garray: number of elements: %d", nelems);
#endif
if ( nelems == 0 ) PG_RETURN_NULL();
/* One-element union is the element itself */
if ( nelems == 1 ) PG_RETURN_POINTER((PG_LWGEOM *)(ARR_DATA_PTR(array)));
/* Ok, we really need geos now ;) */
initJTS(lwnotice);
offset = 0;
for (i=0; i<nelems; i++)
{
PG_LWGEOM *geom = (PG_LWGEOM *)(ARR_DATA_PTR(array)+offset);
offset += INTALIGN(geom->size);
//lwnotice("unite_garray starting iteration %d of %d", i, nelems);
pgis_geom = geom;
#ifdef PGIS_DEBUG
lwnotice("geom %d @ %p", i, geom);
#endif
// Check is3d flag
if ( TYPE_NDIMS(geom->type) > 2 ) is3d = 1;
// Check SRID homogeneity and initialize geos result
if ( ! i )
{
geos_result = POSTGIS2JTS(geom);
SRID = pglwgeom_getSRID(geom);
#ifdef PGIS_DEBUG
elog(NOTICE, "first geom is a %s", lwgeom_typename(TYPE_GETTYPE(geom->type)));
#endif
continue;
}
else
{
if ( SRID != pglwgeom_getSRID(geom) )
{
finishJTS();
lwerror("Operation on mixed SRID geometries");
PG_RETURN_NULL();
}
}
g1 = POSTGIS2JTS(pgis_geom);
if ( g1 == NULL )
{
finishJTS();
lwerror("unite_garray: error converting geometry %d to JTS", i);
}
#ifdef PGIS_DEBUG
lwnotice( "unite_garray(%d): adding geom %d to union (%s)",
call, i, lwgeom_typename(TYPE_GETTYPE(geom->type)));
#endif
g2 = JTSUnion(g1,geos_result);
if ( g2 == NULL )
{
finishJTS();
lwerror("JTS union() threw an error!");
PG_RETURN_NULL();
}
//finishJTS();
geos_result = g2;
g2 = NULL; // FOR GC
}
lwnotice("unite_garray finished all elements (%d)", nelems);
JTSSetSRID(geos_result, SRID);
result = JTS2POSTGIS(geos_result, is3d);
if ( result == NULL ) {
finishJTS();
lwerror("JTS2POSTGIS returned an error");
PG_RETURN_NULL();
}
finishJTS();
PG_RETURN_POINTER(result);
}
//select geomunion('POLYGON((0 0, 10 0, 10 10, 0 10, 0 0))','POLYGON((5 5, 15 5, 15 7, 5 7, 5 5))');
PG_FUNCTION_INFO_V1(geomunion);
Datum geomunion(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
int is3d;
int SRID;
JTSGeometry *g1,*g2,*g3;
PG_LWGEOM *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( TYPE_NDIMS(geom1->type) > 2 ) ||
( TYPE_NDIMS(geom2->type) > 2 );
SRID = pglwgeom_getSRID(geom1);
if ( SRID != pglwgeom_getSRID(geom2) )
{
elog(ERROR, "Operation on two geometries with different SRIDs");
PG_RETURN_NULL();
}
initJTS(lwnotice);
//elog(NOTICE,"in geomunion");
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
//elog(NOTICE,"g1=%s",JTSasText(g1));
//elog(NOTICE,"g2=%s",JTSasText(g2));
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSUnion(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
//elog(NOTICE,"g3=%s",JTSasText(g3));
if (g3 == NULL)
{
finishJTS();
lwerror("JTS union() threw an error!");
PG_RETURN_NULL(); //never get here
}
JTSSetSRID(g3, SRID);
//elog(NOTICE,"result: %s", JTSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
elog(ERROR,"JTS union() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
finishJTS();
PG_RETURN_POINTER(result);
}
// select symdifference('POLYGON((0 0, 10 0, 10 10, 0 10, 0 0))','POLYGON((5 5, 15 5, 15 7, 5 7, 5 5))');
PG_FUNCTION_INFO_V1(symdifference);
Datum symdifference(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2,*g3;
PG_LWGEOM *result;
int is3d;
int SRID;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( TYPE_NDIMS(geom1->type) > 2 ) ||
( TYPE_NDIMS(geom2->type) > 2 );
SRID = pglwgeom_getSRID(geom1);
if ( SRID != pglwgeom_getSRID(geom2) )
{
elog(ERROR, "Operation on two geometries with different SRIDs");
PG_RETURN_NULL();
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSSymDifference(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
finishJTS();
lwerror("JTS symdifference() threw an error!");
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", JTSasText(g3) ) ;
JTSSetSRID(g3, SRID);
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
finishJTS();
lwerror("JTS symdifference() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
finishJTS();
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(boundary);
Datum boundary(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
JTSGeometry *g1,*g3;
PG_LWGEOM *result;
int SRID;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
SRID = pglwgeom_getSRID(geom1);
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1 );
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSBoundary(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
finishJTS();
lwerror("JTS boundary() threw an error!");
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", JTSasText(g3) ) ;
JTSSetSRID(g3, SRID);
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(g3, TYPE_NDIMS(geom1->type) > 2);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
if (result == NULL)
{
finishJTS();
lwerror("JTS boundary() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
finishJTS();
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(convexhull);
Datum convexhull(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
JTSGeometry *g1, *g3;
PG_LWGEOM *result;
LWGEOM *lwout;
int SRID;
BOX2DFLOAT4 bbox;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
SRID = pglwgeom_getSRID(geom1);
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
if (g1 == NULL)
{
finishJTS();
lwerror("JTS convexhull() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSConvexHull(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
finishJTS();
lwerror("JTS convexhull() threw an error!");
PG_RETURN_NULL(); //never get here
}
//elog(NOTICE,"result: %s", JTSasText(g3) ) ;
JTSSetSRID(g3, SRID);
#ifdef PROFILE
profstart(PROF_G2P);
#endif
lwout = JTS2LWGEOM(g3, TYPE_NDIMS(geom1->type) > 2);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (lwout == NULL)
{
finishJTS();
lwerror("convexhull() failed to convert JTS geometry to LWGEOM");
PG_RETURN_NULL(); //never get here
}
/* Copy input bbox if any */
if ( getbox2d_p(SERIALIZED_FORM(geom1), &bbox) )
{
lwout->bbox = &bbox;
/* Mark lwgeom bbox to be externally owned */
TYPE_SETHASBBOX(lwout->type, 1);
}
result = pglwgeom_serialize(lwout);
if (result == NULL)
{
finishJTS();
lwerror("JTS convexhull() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
lwgeom_release(lwout);
finishJTS();
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(buffer);
Datum buffer(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
double size;
JTSGeometry *g1,*g3;
PG_LWGEOM *result;
int quadsegs = 8; // the default
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
size = PG_GETARG_FLOAT8(1);
if ( PG_NARGS() > 2 ) quadsegs = PG_GETARG_INT32(2);
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSBuffer(g1,size,quadsegs);
g1=NULL; // for GC
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
finishJTS();
lwerror("JTS buffer() threw an error!");
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", JTSasText(g3) ) ;
JTSSetSRID(g3, pglwgeom_getSRID(geom1));
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(g3, TYPE_NDIMS(geom1->type) > 2);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
finishJTS();
lwerror("JTS buffer() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
g3=NULL; // for GC
finishJTS();
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(intersection);
Datum intersection(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2,*g3;
PG_LWGEOM *result;
int is3d;
int SRID;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( TYPE_NDIMS(geom1->type) > 2 ) ||
( TYPE_NDIMS(geom2->type) > 2 );
SRID = pglwgeom_getSRID(geom1);
if ( SRID != pglwgeom_getSRID(geom2) )
{
elog(ERROR, "Operation on two geometries with different SRIDs");
PG_RETURN_NULL();
}
initJTS(lwnotice);
//elog(NOTICE,"intersection() START");
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
//elog(NOTICE," constructed geometrys - calling geos");
//elog(NOTICE,"g1 = %s",JTSasText(g1));
//elog(NOTICE,"g2 = %s",JTSasText(g2));
//if (g1==NULL)
// elog(NOTICE,"g1 is null");
//if (g2==NULL)
// elog(NOTICE,"g2 is null");
//elog(NOTICE,"g2 is valid = %i",JTSisvalid(g2));
//elog(NOTICE,"g1 is valid = %i",JTSisvalid(g1));
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSIntersection(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
//elog(NOTICE," intersection finished");
if (g3 == NULL)
{
finishJTS();
lwerror("JTS Intersection() threw an error!");
PG_RETURN_NULL(); //never get here
}
//elog(NOTICE,"result: %s", JTSasText(g3) ) ;
JTSSetSRID(g3, SRID);
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
finishJTS();
lwerror("JTS Intersection() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
finishJTS();
//compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_POINTER(result);
}
//select difference('POLYGON((0 0, 10 0, 10 10, 0 10, 0 0))','POLYGON((5 5, 15 5, 15 7, 5 7, 5 5))');
PG_FUNCTION_INFO_V1(difference);
Datum difference(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2,*g3;
PG_LWGEOM *result;
int is3d;
int SRID;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( TYPE_NDIMS(geom1->type) > 2 ) ||
( TYPE_NDIMS(geom2->type) > 2 );
SRID = pglwgeom_getSRID(geom1);
if ( SRID != pglwgeom_getSRID(geom2) )
{
elog(ERROR, "Operation on two geometries with different SRIDs");
PG_RETURN_NULL();
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSDifference(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
finishJTS();
lwerror("JTS difference() threw an error!");
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", JTSasText(g3) ) ;
JTSSetSRID(g3, SRID);
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
finishJTS();
lwerror("JTS difference() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
finishJTS();
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_POINTER(result);
}
//select pointonsurface('POLYGON((0 0, 10 0, 10 10, 0 10, 0 0))');
PG_FUNCTION_INFO_V1(pointonsurface);
Datum pointonsurface(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
JTSGeometry *g1,*g3;
PG_LWGEOM *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = JTSpointonSurface(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
finishJTS();
lwerror("JTS pointonsurface() threw an error!");
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", JTSasText(g3) ) ;
JTSSetSRID(g3, pglwgeom_getSRID(geom1));
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(g3, (TYPE_NDIMS(geom1->type) > 2));
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
finishJTS();
lwerror("JTS pointonsurface() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
finishJTS();
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(centroid);
Datum centroid(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom, *result;
JTSGeometry *geosgeom, *geosresult;
int failure;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
geosgeom = POSTGIS2JTS(geom);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
geosresult = JTSGetCentroid(geosgeom, &failure);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if ( geosresult == NULL )
{
finishJTS();
if ( failure ) {
lwerror("JTS getCentroid() threw an error!");
}
PG_RETURN_NULL();
}
JTSSetSRID(geosresult, pglwgeom_getSRID(geom));
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = JTS2POSTGIS(geosresult, (TYPE_NDIMS(geom->type) > 2));
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
finishJTS();
lwerror("Error in JTS-PGIS conversion");
PG_RETURN_NULL();
}
finishJTS();
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom, NULL, result);
#endif
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_POINTER(result);
}
//----------------------------------------------
void
errorIfJTSGeometryCollection(PG_LWGEOM *g1, PG_LWGEOM *g2)
{
int t1 = lwgeom_getType(g1->type);
int t2 = lwgeom_getType(g2->type);
if ( (t1 == COLLECTIONTYPE) || (t2 == COLLECTIONTYPE) )
elog(ERROR,"Relate Operation called with a LWGEOMCOLLECTION type. This is unsupported");
}
PG_FUNCTION_INFO_V1(isvalid);
Datum isvalid(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
LWGEOM *lwgeom;
bool result;
JTSGeometry *g1;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
lwgeom = lwgeom_deserialize(SERIALIZED_FORM(geom1));
if ( ! lwgeom )
{
lwerror("unable to deserialize input");
}
g1 = LWGEOM2JTS(lwgeom);
if ( ! g1 )
{
finishJTS();
lwgeom_release(lwgeom);
PG_RETURN_BOOL(FALSE);
}
lwgeom_release(lwgeom);
//g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSisvalid(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
elog(ERROR,"JTS isvalid() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_RETURN_BOOL(result);
}
// overlaps(PG_LWGEOM g1,PG_LWGEOM g2)
// returns if JTS::g1->overlaps(g2) returns true
// throws an error (elog(ERROR,...)) if JTS throws an error
PG_FUNCTION_INFO_V1(overlaps);
Datum overlaps(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom2 bounding box does not overlap
* geom1 bounding box we can prematurely return FALSE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box2.xmax < box1.xmin ) PG_RETURN_BOOL(FALSE);
if ( box2.xmin > box1.xmax ) PG_RETURN_BOOL(FALSE);
if ( box2.ymax < box1.ymin ) PG_RETURN_BOOL(FALSE);
if ( box2.ymin > box2.ymax ) PG_RETURN_BOOL(FALSE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelateOverlaps(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS overlaps() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(contains);
Datum contains(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom2 bounding box is not completely inside
* geom1 bounding box we can prematurely return FALSE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box2.xmin < box1.xmin ) PG_RETURN_BOOL(FALSE);
if ( box2.xmax > box1.xmax ) PG_RETURN_BOOL(FALSE);
if ( box2.ymin < box1.ymin ) PG_RETURN_BOOL(FALSE);
if ( box2.ymax > box1.ymax ) PG_RETURN_BOOL(FALSE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelateContains(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
elog(ERROR,"JTS contains() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(within);
Datum within(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom1 bounding box is not completely inside
* geom2 bounding box we can prematurely return FALSE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box1.xmin < box2.xmin ) PG_RETURN_BOOL(FALSE);
if ( box1.xmax > box2.xmax ) PG_RETURN_BOOL(FALSE);
if ( box1.ymin < box2.ymin ) PG_RETURN_BOOL(FALSE);
if ( box1.ymax > box2.ymax ) PG_RETURN_BOOL(FALSE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelateWithin(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS within() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(crosses);
Datum crosses(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom2 bounding box does not overlap
* geom1 bounding box we can prematurely return FALSE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box2.xmax < box1.xmin ) PG_RETURN_BOOL(FALSE);
if ( box2.xmin > box1.xmax ) PG_RETURN_BOOL(FALSE);
if ( box2.ymax < box1.ymin ) PG_RETURN_BOOL(FALSE);
if ( box2.ymin > box2.ymax ) PG_RETURN_BOOL(FALSE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelateCrosses(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS crosses() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(intersects);
Datum intersects(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom2 bounding box does not overlap
* geom1 bounding box we can prematurely return FALSE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box2.xmax < box1.xmin ) PG_RETURN_BOOL(FALSE);
if ( box2.xmin > box1.xmax ) PG_RETURN_BOOL(FALSE);
if ( box2.ymax < box1.ymin ) PG_RETURN_BOOL(FALSE);
if ( box2.ymin > box2.ymax ) PG_RETURN_BOOL(FALSE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1 );
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2 );
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelateIntersects(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS intersects() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("intr",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(touches);
Datum touches(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom2 bounding box does not overlap
* geom1 bounding box we can prematurely return FALSE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box2.xmax < box1.xmin ) PG_RETURN_BOOL(FALSE);
if ( box2.xmin > box1.xmax ) PG_RETURN_BOOL(FALSE);
if ( box2.ymax < box1.ymin ) PG_RETURN_BOOL(FALSE);
if ( box2.ymin > box2.ymax ) PG_RETURN_BOOL(FALSE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1 );
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2 );
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelateTouches(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS touches() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(disjoint);
Datum disjoint(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom2 bounding box does not overlap
* geom1 bounding box we can prematurely return TRUE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box2.xmax < box1.xmin ) PG_RETURN_BOOL(TRUE);
if ( box2.xmin > box1.xmax ) PG_RETURN_BOOL(TRUE);
if ( box2.ymax < box1.ymin ) PG_RETURN_BOOL(TRUE);
if ( box2.ymin > box2.ymax ) PG_RETURN_BOOL(TRUE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelateDisjoint(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS disjoin() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(relate_pattern);
Datum relate_pattern(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
char *patt;
bool result;
JTSGeometry *g1,*g2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
patt = DatumGetCString(DirectFunctionCall1(textout,
PointerGetDatum(PG_GETARG_DATUM(2))));
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSrelatePattern(g1,g2,patt);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
pfree(patt);
if (result == 2)
{
elog(ERROR,"JTS relate_pattern() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(relate_full);
Datum relate_full(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
char *relate_str;
int len;
text *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
//elog(NOTICE,"in relate_full()");
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
initJTS(lwnotice);
//elog(NOTICE,"JTS init()");
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1 );
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2 );
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
//elog(NOTICE,"constructed geometries ");
if ((g1==NULL) || (g2 == NULL))
{
finishJTS();
lwerror("g1 or g2 are null");
}
//elog(NOTICE,JTSasText(g1));
//elog(NOTICE,JTSasText(g2));
//elog(NOTICE,"valid g1 = %i", JTSisvalid(g1));
//elog(NOTICE,"valid g2 = %i",JTSisvalid(g2));
//elog(NOTICE,"about to relate()");
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
relate_str = JTSrelate(g1, g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
//lwnotice("finished relate()");
g1=g2=NULL; // for GC
finishJTS();
if (relate_str == NULL)
{
lwerror("JTS relate() threw an error!");
PG_RETURN_NULL(); //never get here
}
len = strlen(relate_str) + VARHDRSZ;
result= palloc(len);
VARATT_SIZEP(result) = len;
//*((int *) result) = len;
memcpy(VARDATA(result), relate_str, len-VARHDRSZ);
free(relate_str);
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_POINTER(result);
}
//==============================
PG_FUNCTION_INFO_V1(geomequals);
Datum geomequals(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom1;
PG_LWGEOM *geom2;
JTSGeometry *g1,*g2;
bool result;
BOX2DFLOAT4 box1, box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfJTSGeometryCollection(geom1,geom2);
/*
* short-circuit 1: if geom2 bounding box does not equal
* geom1 bounding box we can prematurely return FALSE.
* Do the test IFF BOUNDING BOX AVAILABLE.
*/
if ( getbox2d_p(SERIALIZED_FORM(geom1), &box1) &&
getbox2d_p(SERIALIZED_FORM(geom2), &box2) )
{
if ( box2.xmax != box1.xmax ) PG_RETURN_BOOL(FALSE);
if ( box2.xmin != box1.xmin ) PG_RETURN_BOOL(FALSE);
if ( box2.ymax != box1.ymax ) PG_RETURN_BOOL(FALSE);
if ( box2.ymin != box2.ymin ) PG_RETURN_BOOL(FALSE);
}
initJTS(lwnotice);
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom1);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_P2G2);
#endif
g2 = POSTGIS2JTS(geom2);
#ifdef PROFILE
profstop(PROF_P2G2);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSequals(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS equals() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(issimple);
Datum issimple(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom;
JTSGeometry *g1;
int result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom = (PG_LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
if (lwgeom_getnumgeometries(SERIALIZED_FORM(geom)) == 0)
PG_RETURN_BOOL(true);
initJTS(lwnotice);
//elog(NOTICE,"JTS init()");
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom);
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSisSimple(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
elog(ERROR,"JTS issimple() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom, NULL, NULL);
#endif
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(isring);
Datum isring(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom;
JTSGeometry *g1;
int result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
if (lwgeom_getType(geom->type) != LINETYPE)
{
elog(ERROR,"isring() should only be called on a LINE");
}
if (lwgeom_getnumgeometries(SERIALIZED_FORM(geom)) == 0)
PG_RETURN_BOOL(false);
initJTS(lwnotice);
//elog(NOTICE,"JTS init()");
#ifdef PROFILE
profstart(PROF_P2G1);
#endif
g1 = POSTGIS2JTS(geom );
#ifdef PROFILE
profstop(PROF_P2G1);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = JTSisRing(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
finishJTS();
if (result == 2)
{
lwerror("JTS isring() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom, NULL, NULL);
#endif
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_BOOL(result);
}
//= JTS <=> POSTGIS CONVERSION =========================
//-----=JTS2POSTGIS=
// Return a LWPOINT from a JTS Point.
LWPOINT *
lwpoint_from_geometry(JTSGeometry *g, char want3d)
{
POINTARRAY *pa;
LWPOINT *point;
POINT3D *pts;
size_t ptsize = want3d ? sizeof(POINT3DZ) : sizeof(POINT2D);
int SRID = JTSGetSRID(g);
#ifdef PGIS_DEBUG_JTS2POSTGIS
elog(NOTICE, "lwpoint_from_geometry: point size %d", ptsize);
#endif
// Construct point array
pa = (POINTARRAY *)lwalloc(sizeof(POINTARRAY));
TYPE_SETZM(pa->dims, want3d, 0);
pa->npoints = 1;
// Fill point array
pa->serialized_pointlist = lwalloc(ptsize);
pts = JTSGetCoordinates(g);
memcpy(pa->serialized_pointlist, pts, ptsize);
JTSdeleteChar( (char*) pts);
// Construct LWPOINT
point = lwpoint_construct(SRID, NULL, pa);
return point;
}
// Return a LWLINE from a JTS linestring
LWLINE *
lwline_from_geometry(JTSGeometry *g, char want3d)
{
POINTARRAY *pa;
LWLINE *line;
int npoints;
POINT3D *pts, *ip;
int ptsize = want3d ? sizeof(POINT3D) : sizeof(POINT2D);
int i;
int SRID = JTSGetSRID(g);
#ifdef PGIS_DEBUG_JTS2POSTGIS
elog(NOTICE, "lwline_from_geometry: point size %d", ptsize);
#endif
npoints = JTSGetNumCoordinate(g);
if (npoints <2) return NULL;
// Construct point array
pa = (POINTARRAY *)palloc(sizeof(POINTARRAY));
TYPE_SETZM(pa->dims, want3d, 0);
pa->npoints = npoints;
// Fill point array
pa->serialized_pointlist = palloc(ptsize*npoints);
pts = JTSGetCoordinates(g);
for (i=0; i<npoints; i++)
{
ip = &(pts[i]);
memcpy(getPoint_internal(pa, i), ip, ptsize);
}
JTSdeleteChar( (char*) pts);
// Construct LWPOINT
line = lwline_construct(SRID, NULL, pa);
return line;
}
// Return a LWPOLY from a JTS polygon
LWPOLY *
lwpoly_from_geometry(JTSGeometry *g, char want3d)
{
POINTARRAY **rings, *pa;
LWPOLY *poly;
int ndims = want3d ? 3 : 2;
int nrings;
int npoints;
int i, j;
POINT3D *pts, *ip;
int ptoff=0; // point offset inside POINT3D *
int ptsize = sizeof(double)*ndims;
int SRID = JTSGetSRID(g);
#ifdef PGIS_DEBUG_JTS2POSTGIS
elog(NOTICE, "lwpoly_from_geometry: point size %d", ptsize);
#endif
// Get number of rings, and pointlist
pts = JTSGetCoordinates(g);
nrings = JTSGetNumInteriorRings(g);
rings = (POINTARRAY **)palloc(sizeof(POINTARRAY *)*(nrings+1));
// Exterior ring
npoints = JTSGetNumCoordinate(JTSGetExteriorRing(g));
rings[0] = (POINTARRAY *)palloc(sizeof(POINTARRAY));
pa = rings[0];
TYPE_SETZM(pa->dims, want3d, 0);
pa->npoints = npoints;
// Fill point array
pa->serialized_pointlist = palloc(ptsize*npoints);
for (i=0; i<npoints; i++)
{
ip = &(pts[i+ptoff]);
memcpy(getPoint_internal(pa, i), ip, ptsize);
}
ptoff+=npoints;
// Interior rings
for (j=0; j<nrings; j++)
{
npoints = JTSGetNumCoordinate(JTSGetInteriorRingN(g, j));
rings[j+1] = (POINTARRAY *)palloc(sizeof(POINTARRAY));
pa = rings[j+1];
TYPE_SETZM(pa->dims, want3d, 0);
pa->npoints = npoints;
// Fill point array
pa->serialized_pointlist = palloc(ptsize*npoints);
for (i=0; i<npoints; i++)
{
ip = &(pts[i+ptoff]);
memcpy(getPoint_internal(pa, i), ip, ptsize);
}
ptoff+=npoints;
}
JTSdeleteChar( (char*) pts);
// Construct LWPOLY
poly = lwpoly_construct(SRID, NULL, nrings+1, rings);
return poly;
}
// Return a lwcollection from a JTS multi*
LWCOLLECTION *
lwcollection_from_geometry(JTSGeometry *geom, char want3d)
{
uint32 ngeoms;
LWGEOM **geoms = NULL;
LWCOLLECTION *ret;
int type = JTSGeometryTypeId(geom) ;
int SRID = JTSGetSRID(geom);
int i;
ngeoms = JTSGetNumGeometries(geom);
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("lwcollection_from_geometry: type: %s, geoms %d",
lwgeom_typename(type), ngeoms);
#endif
if ( ngeoms ) geoms = lwalloc(sizeof(LWGEOM *)*ngeoms);
for (i=0; i<ngeoms; i++)
{
JTSGeometry *g = JTSGetGeometryN(geom, i);
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("lwcollection_from_geometry: geom %d is a %s", i, lwgeom_typename(JTSGeometryTypeId(g)));
#endif
geoms[i] = JTS2LWGEOM(g, want3d);
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("lwcollection_from_geometry: geoms[%d] is a %s", i, lwgeom_typename(TYPE_GETTYPE(geoms[i]->type)));
#endif
}
ret = lwcollection_construct(type, SRID, NULL, ngeoms, geoms);
return ret;
}
#if WKT_J2P
// Return an LWGEOM from a JTSGeometry
LWGEOM *
JTS2LWGEOM(JTSGeometry *geom, char want3d)
{
char *wkt;
PG_LWGEOM *pglwgeom;
LWGEOM *ret;
//lwnotice("JTS2LWGEOM(WKT) called");
wkt = JTSasText(geom);
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("JTS2LWGEOM: wkt: %d bytes", strlen(wkt));
#endif
pglwgeom = (PG_LWGEOM *)parse_lwgeom_wkt(wkt);
//lwnotice("JTS2LWGEOM(WKT): wkt parsed (got pglwgeom)");
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("JTS2LWGEOM: parsed: %s",
lwgeom_typename(TYPE_GETTYPE(pglwgeom->type)));
#endif
ret = lwgeom_deserialize(SERIALIZED_FORM(pglwgeom));
ret->SRID = JTSGetSRID(geom);
//lwnotice("JTS2LWGEOM: return SRID: %d", ret->SRID);
return ret;
}
#else // ! WKT_J2P
// Return an LWGEOM from a JTSGeometry
LWGEOM *
JTS2LWGEOM(JTSGeometry *geom, char want3d)
{
int type = JTSGeometryTypeId(geom) ;
bool hasZ = JTSHasZ(geom);
//lwnotice("JTS2LWGEOM(!WKT) called");
if ( ! hasZ )
{
if ( want3d )
{
//elog(NOTICE, "JTSGeometry has no Z, won't provide one");
want3d = 0;
}
}
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("JTS2LWGEOM: it's a %s", lwgeom_typename(type));
#endif
switch (type)
{
/* From slower to faster.. compensation rule :) */
case COLLECTIONTYPE:
case MULTIPOLYGONTYPE:
case MULTILINETYPE:
case MULTIPOINTTYPE:
return (LWGEOM *)lwcollection_from_geometry(geom, want3d);
case POLYGONTYPE:
return (LWGEOM *)lwpoly_from_geometry(geom, want3d);
case LINETYPE:
return (LWGEOM *)lwline_from_geometry(geom, want3d);
case POINTTYPE:
return (LWGEOM *)lwpoint_from_geometry(geom, want3d);
default:
lwerror("JTS2LWGEOM: unknown geometry type: %d", type);
return NULL;
}
}
#endif // ! WKT_J2P
PG_LWGEOM *
JTS2POSTGIS(JTSGeometry *geom, char want3d)
{
LWGEOM *lwgeom;
PG_LWGEOM *result;
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("JTS2POSTGIS: called");
#endif
lwgeom = JTS2LWGEOM(geom, want3d);
if ( ! lwgeom )
{
lwerror("JTS2POSTGIS: JTS2LWGEOM returned NULL");
return NULL;
}
#ifdef PGIS_DEBUG_JTS2POSTGIS
lwnotice("JTS2POSTGIS: JTS2LWGEOM returned a %s", lwgeom_summary(lwgeom, 0));
#endif
if ( is_worth_caching_lwgeom_bbox(lwgeom) )
{
lwgeom_addBBOX(lwgeom);
}
result = pglwgeom_serialize(lwgeom);
return result;
}
//-----=POSTGIS2JTS=
JTSGeometry *LWGEOM2JTS(LWGEOM *lwgeom);
#if WKT_P2J
JTSGeometry *
LWGEOM2JTS(LWGEOM *lwgeom)
{
PG_LWGEOM *geom;
PG_LWGEOM *ogcgeom;
char *wkt, *ogcwkt, *loc;
JTSGeometry *g;
//lwnotice("LWGEOM2JTS: WKT version");
geom = pglwgeom_serialize(lwgeom);
if ( ! geom ) {
lwerror("LWGEOM2JTS(WKT): couldn't serialized lwgeom");
return NULL;
}
/* Force to 2d */
ogcgeom = (PG_LWGEOM *)DatumGetPointer(DirectFunctionCall1(
LWGEOM_force_2d, PointerGetDatum(geom)));
wkt = unparse_WKT(SERIALIZED_FORM(ogcgeom), lwalloc, lwfree);
lwfree(ogcgeom);
if ( geom != ogcgeom ) lwfree(geom);
loc = strchr(wkt,';');
if (loc != NULL) ogcwkt = loc+1;
else ogcwkt=wkt;
g = JTSGeometryFromWKT(ogcwkt);
JTSSetSRID(g, lwgeom->SRID);
lwfree(wkt);
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("LWGEOM2JTS: returning JTS JTSGeometry");
#endif
return g;
}
#else // ! WKT_P2J
JTSGeometry *
LWGEOM2JTS(LWGEOM *lwgeom)
{
uint32 i;
JTSGeometry **collected;
LWCOLLECTION *col;
//lwnotice("LWGEOM2JTS: !WKT version");
if ( ! lwgeom ) return NULL;
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("LWGEOM2JTS: got lwgeom[%p]", lwgeom);
#endif
switch (TYPE_GETTYPE(lwgeom->type))
{
case POINTTYPE:
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("LWGEOM2JTS: point[%p]", lwgeom);
#endif
return PostGIS2JTS_point((LWPOINT *)lwgeom);
case LINETYPE:
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("LWGEOM2JTS: line[%p]", lwgeom);
#endif
return PostGIS2JTS_linestring((LWLINE *)lwgeom);
case POLYGONTYPE:
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("LWGEOM2JTS: poly[%p]", lwgeom);
#endif
return PostGIS2JTS_polygon((LWPOLY *)lwgeom);
case MULTIPOINTTYPE:
case MULTILINETYPE:
case MULTIPOLYGONTYPE:
case COLLECTIONTYPE:
col = (LWCOLLECTION *)lwgeom;
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("LWGEOM2JTS: %s with %d subgeoms", lwgeom_typename(TYPE_GETTYPE(col->type)), col->ngeoms);
#endif
collected = (JTSGeometry **)lwalloc(sizeof(JTSGeometry *)*col->ngeoms);
for (i=0; i<col->ngeoms; i++)
{
collected[i] = LWGEOM2JTS(col->geoms[i]);
}
return PostGIS2JTS_collection(TYPE_GETTYPE(col->type),
collected, col->ngeoms, col->SRID,
TYPE_NDIMS(col->type)>2);
default:
lwerror("Unknown geometry type: %d",
TYPE_GETTYPE(lwgeom->type));
return NULL;
}
}
#endif // ! WKT_P2J
JTSGeometry *
POSTGIS2JTS(PG_LWGEOM *geom)
{
JTSGeometry *ret;
LWGEOM *lwgeom;
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("POSTGIS2JTS: called");
#endif
lwgeom = lwgeom_deserialize(SERIALIZED_FORM(geom));
if ( ! lwgeom )
{
lwerror("POSTGIS2JTS: unable to deserialize input");
return NULL;
}
ret = LWGEOM2JTS(lwgeom);
lwgeom_release(lwgeom);
if ( ! ret ) {
lwerror("POSTGIS2JTS conversion failed");
return NULL;
}
#ifdef PGIS_DEBUG_POSTGIS2JTS
lwnotice("POSTGIS2JTS: returning %p", ret);
#endif
return ret;
}
PG_FUNCTION_INFO_V1(JTSnoop);
Datum JTSnoop(PG_FUNCTION_ARGS)
{
PG_LWGEOM *geom;
JTSGeometry *geosgeom;
PG_LWGEOM *result;
initJTS(lwnotice);
geom = (PG_LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
#ifdef PGIS_DEBUG_CONVERTER
lwnotice("JTSnoop: IN: %s", lwgeom_summary(lwgeom_deserialize(SERIALIZED_FORM(geom)), 0));
#endif
geosgeom = POSTGIS2JTS(geom);
if ( ! geosgeom ) PG_RETURN_NULL();
#ifdef PROFILE
profstart(PROF_GRUN);
profstop(PROF_GRUN);
#endif
result = JTS2POSTGIS(geosgeom, TYPE_NDIMS(geom->type) > 2);
finishJTS();
#ifdef PGIS_DEBUG_CONVERTER
elog(NOTICE, "JTSnoop: OUT: %s", unparse_WKT(SERIALIZED_FORM(result), lwalloc, lwfree));
#endif
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(JTS_polygonize_garray);
Datum JTS_polygonize_garray(PG_FUNCTION_ARGS)
{
Datum datum;
ArrayType *array;
int is3d = 0;
unsigned int nelems, i;
PG_LWGEOM *result;
JTSGeometry *geos_result;
JTSGeometry **vgeoms;
int SRID=-1;
size_t offset;
#ifdef PGIS_DEBUG
static int call=1;
#endif
#ifdef PGIS_DEBUG
call++;
#endif
datum = PG_GETARG_DATUM(0);
/* Null array, null geometry (should be empty?) */
if ( (Pointer *)datum == NULL ) PG_RETURN_NULL();
array = (ArrayType *) PG_DETOAST_DATUM(datum);
nelems = ArrayGetNItems(ARR_NDIM(array), ARR_DIMS(array));
#ifdef PGIS_DEBUG
elog(NOTICE, "JTS_polygonize_garray: number of elements: %d", nelems);
#endif
if ( nelems == 0 ) PG_RETURN_NULL();
/* Ok, we really need geos now ;) */
initJTS(lwnotice);
vgeoms = palloc(sizeof(JTSGeometry *)*nelems);
offset = 0;
for (i=0; i<nelems; i++)
{
PG_LWGEOM *geom = (PG_LWGEOM *)(ARR_DATA_PTR(array)+offset);
offset += INTALIGN(geom->size);
vgeoms[i] = POSTGIS2JTS(geom);
if ( ! i )
{
SRID = pglwgeom_getSRID(geom);
}
else
{
if ( SRID != pglwgeom_getSRID(geom) )
{
finishJTS();
lwerror("polygonize: operation on mixed SRID geometries");
PG_RETURN_NULL();
}
}
}
#ifdef PGIS_DEBUG
elog(NOTICE, "JTS_polygonize_garray: invoking JTSpolygonize");
#endif
geos_result = JTSpolygonize(vgeoms, nelems);
#ifdef PGIS_DEBUG
elog(NOTICE, "JTS_polygonize_garray: JTSpolygonize returned");
#endif
//pfree(vgeoms);
if ( ! geos_result ) {
finishJTS();
PG_RETURN_NULL();
}
JTSSetSRID(geos_result, SRID);
result = JTS2POSTGIS(geos_result, is3d);
finishJTS();
if ( result == NULL )
{
elog(ERROR, "JTS2POSTGIS returned an error");
PG_RETURN_NULL(); //never get here
}
//compressType(result);
PG_RETURN_POINTER(result);
}
Datum GEOS_polygonize_garray(PG_FUNCTION_ARGS);
PG_FUNCTION_INFO_V1(GEOS_polygonize_garray);
Datum GEOS_polygonize_garray(PG_FUNCTION_ARGS)
{
elog(NOTICE, "GEOS support is disabled, use JTS_polygonize_garray instead");
PG_RETURN_NULL();
}
Datum GEOSnoop(PG_FUNCTION_ARGS);
PG_FUNCTION_INFO_V1(GEOSnoop);
Datum GEOSnoop(PG_FUNCTION_ARGS)
{
elog(NOTICE, "GEOS support is disabled, use JTSnoop instead");
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(postgis_geos_version);
Datum postgis_geos_version(PG_FUNCTION_ARGS)
{
PG_RETURN_NULL();
}
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