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postgis/lwgeom/lwgeom_geos.c
Sandro Santilli 71164db850 Added 'label' argument to the profreport macro. 
git-svn-id: http://svn.osgeo.org/postgis/trunk@873 b70326c6-7e19-0410-871a-916f4a2858ee
2004-09-22 13:45:11 +00:00

2326 lines
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C
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#include "postgres.h"
#include "utils/array.h"
#include "utils/builtins.h"
#include "lwgeom.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 GEOSnoop(PG_FUNCTION_ARGS);
Datum postgis_geos_version(PG_FUNCTION_ARGS);
Datum centroid(PG_FUNCTION_ARGS);
#if USE_GEOS
/*
* Define this to have have many notices printed
* during postgis->geos and geos->postgis conversions
*/
#undef DEBUG_CONVERTER
#undef DEBUG_POSTGIS2GEOS
#undef DEBUG_GEOS2POSTGIS
typedef struct Geometry Geometry;
extern const char * createGEOSPoint(POINT3D *pt);
extern void initGEOS(int maxalign);
extern char *GEOSrelate(Geometry *g1, Geometry*g2);
extern char GEOSrelatePattern(Geometry *g1, Geometry*g2,char *pat);
extern char GEOSrelateDisjoint(Geometry *g1, Geometry*g2);
extern char GEOSrelateTouches(Geometry *g1, Geometry*g2);
extern char GEOSrelateIntersects(Geometry *g1, Geometry*g2);
extern char GEOSrelateCrosses(Geometry *g1, Geometry*g2);
extern char GEOSrelateWithin(Geometry *g1, Geometry*g2);
extern char GEOSrelateContains(Geometry *g1, Geometry*g2);
extern char GEOSrelateOverlaps(Geometry *g1, Geometry*g2);
extern char *GEOSasText(Geometry *g1);
extern char GEOSisEmpty(Geometry *g1);
extern char *GEOSGeometryType(Geometry *g1);
extern int GEOSGeometryTypeId(Geometry *g1);
extern char *GEOSversion();
extern char *GEOSjtsport();
extern char GEOSisvalid(Geometry *g1);
extern Geometry *GEOSIntersection(Geometry *g1, Geometry *g2);
extern Geometry *GEOSBuffer(Geometry *g1,double width);
extern Geometry *GEOSConvexHull(Geometry *g1);
extern Geometry *GEOSDifference(Geometry *g1,Geometry *g2);
extern Geometry *GEOSBoundary(Geometry *g1);
extern Geometry *GEOSSymDifference(Geometry *g1,Geometry *g2);
extern Geometry *GEOSUnion(Geometry *g1,Geometry *g2);
extern char GEOSequals(Geometry *g1, Geometry*g2);
extern char GEOSisSimple(Geometry *g1);
extern char GEOSisRing(Geometry *g1);
extern Geometry *GEOSpointonSurface(Geometry *g1);
extern Geometry *GEOSGetCentroid(Geometry *g);
extern void GEOSdeleteChar(char *a);
extern void GEOSdeleteGeometry(Geometry *a);
extern POINT3D *GEOSGetCoordinate(Geometry *g1);
extern POINT3D *GEOSGetCoordinates(Geometry *g1);
extern int GEOSGetNumCoordinate(Geometry *g1);
extern Geometry *GEOSGetGeometryN(Geometry *g1, int n);
extern Geometry *GEOSGetExteriorRing(Geometry *g1);
extern Geometry *GEOSGetInteriorRingN(Geometry *g1,int n);
extern int GEOSGetNumInteriorRings(Geometry *g1);
extern int GEOSGetSRID(Geometry *g1);
extern int GEOSGetNumGeometries(Geometry *g1);
extern Geometry *PostGIS2GEOS_point(const LWPOINT *point);
extern Geometry *PostGIS2GEOS_linestring(const LWLINE *line);
extern Geometry *PostGIS2GEOS_polygon(const LWPOLY *polygon);
extern Geometry *PostGIS2GEOS_multipolygon(LWPOLY *const *const geoms, uint32 ngeoms, int SRID, int is3d);
extern Geometry *PostGIS2GEOS_multilinestring(LWLINE *const *const geoms, uint32 ngeoms, int SRID, int is3d);
extern Geometry *PostGIS2GEOS_multipoint(LWPOINT *const *const geoms, uint32 ngeoms, int SRID, int is3d);
extern Geometry *PostGIS2GEOS_collection(Geometry **geoms, int ngeoms, int SRID, bool is3d);
void NOTICE_MESSAGE(char *msg);
LWGEOM *GEOS2POSTGIS(Geometry *geom, char want3d);
Geometry * POSTGIS2GEOS(LWGEOM *g);
void errorIfGeometryCollection(LWGEOM *g1, LWGEOM *g2);
char *PointFromGeometry(Geometry *g, char want3d);
char *LineFromGeometry(Geometry *g, char want3d);
char *PolyFromGeometry(Geometry *g, char want3d);
void addToExploded_recursive(Geometry *geom, LWGEOM_EXPLODED *exp);
void NOTICE_MESSAGE(char *msg)
{
elog(NOTICE,msg);
}
PG_FUNCTION_INFO_V1(postgis_geos_version);
Datum postgis_geos_version(PG_FUNCTION_ARGS)
{
char *ver = GEOSversion();
text *result;
result = (text *) palloc(VARHDRSZ + strlen(ver));
VARATT_SIZEP(result) = VARHDRSZ + strlen(ver) ;
memcpy(VARDATA(result), ver, strlen(ver));
free(ver);
PG_RETURN_POINTER(result);
}
/*
* This is the final function for union/fastunite/geomunion
* aggregate (still discussing the name). Will have
* as input an array of Geometry pointers.
* Will iteratively call GEOSUnion on the GEOS-converted
* versions of them and return PGIS-converted version back.
* Changing combination order *might* speed up performance.
*
* Geometries in the array are pfree'd as soon as possible.
*
*/
PG_FUNCTION_INFO_V1(unite_garray);
Datum unite_garray(PG_FUNCTION_ARGS)
{
Datum datum;
ArrayType *array;
int is3d = 0;
int nelems, i;
LWGEOM **geoms, *result, *pgis_geom;
Geometry *g1, *g2, *geos_result;
#ifdef DEBUG
static int call=1;
#endif
#ifdef 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 DEBUG
elog(NOTICE, "unite_garray: number of elements: %d", nelems);
#endif
if ( nelems == 0 ) PG_RETURN_NULL();
geoms = (LWGEOM **)ARR_DATA_PTR(array);
/* One-element union is the element itself */
if ( nelems == 1 ) PG_RETURN_POINTER(geoms[0]);
/* Ok, we really need geos now ;) */
initGEOS(MAXIMUM_ALIGNOF);
if ( lwgeom_ndims(geoms[0]->type) > 2 ) is3d = 1;
geos_result = POSTGIS2GEOS(geoms[0]);
pfree(geoms[0]);
for (i=1; i<nelems; i++)
{
pgis_geom = geoms[i];
g1 = POSTGIS2GEOS(pgis_geom);
/*
* If we free this memory now we'll have
* more space for the growing result geometry.
* We don't need it anyway.
*/
pfree(pgis_geom);
#ifdef DEBUG
elog(NOTICE, "unite_garray(%d): adding geom %d to union",
call, i);
#endif
g2 = GEOSUnion(g1,geos_result);
if ( g2 == NULL )
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(geos_result);
elog(ERROR,"GEOS union() threw an error!");
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(geos_result);
geos_result = g2;
}
result = GEOS2POSTGIS(geos_result, is3d);
GEOSdeleteGeometry(geos_result);
if ( result == NULL )
{
elog(ERROR, "GEOS2POSTGIS returned an error");
PG_RETURN_NULL(); //never get here
}
//compressType(result);
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)
{
LWGEOM *geom1;
LWGEOM *geom2;
int is3d;
Geometry *g1,*g2,*g3;
LWGEOM *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( lwgeom_ndims(geom1->type) > 2 ) ||
( lwgeom_ndims(geom2->type) > 2 );
initGEOS(MAXIMUM_ALIGNOF);
//elog(NOTICE,"in geomunion");
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
//elog(NOTICE,"g1=%s",GEOSasText(g1));
//elog(NOTICE,"g2=%s",GEOSasText(g2));
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSUnion(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
//elog(NOTICE,"g3=%s",GEOSasText(g3));
#ifndef PROFILE
PG_FREE_IF_COPY(geom1, 0);
PG_FREE_IF_COPY(geom2, 1);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (g3 == NULL)
{
elog(ERROR,"GEOS union() threw an error!");
PG_RETURN_NULL(); //never get here
}
//elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
GEOSdeleteGeometry(g3);
if (result == NULL)
{
elog(ERROR,"GEOS union() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
//compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
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)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2,*g3;
LWGEOM *result;
int is3d;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( lwgeom_ndims(geom1->type) > 2 ) ||
( lwgeom_ndims(geom2->type) > 2 );
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSSymDifference(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
elog(ERROR,"GEOS symdifference() threw an error!");
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
GEOSdeleteGeometry(g3);
elog(ERROR,"GEOS symdifference() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
GEOSdeleteGeometry(g3);
//compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(boundary);
Datum boundary(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
Geometry *g1,*g3;
LWGEOM *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1 );
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSBoundary(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
elog(ERROR,"GEOS bounary() threw an error!");
GEOSdeleteGeometry(g1);
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(g3, lwgeom_ndims(geom1->type) > 2);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
if (result == NULL)
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
elog(ERROR,"GEOS bounary() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
//compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(convexhull);
Datum convexhull(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
Geometry *g1,*g3;
LWGEOM *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1 );
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSConvexHull(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
elog(ERROR,"GEOS convexhull() threw an error!");
GEOSdeleteGeometry(g1);
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
result = GEOS2POSTGIS(g3, lwgeom_ndims(geom1->type) > 2);
if (result == NULL)
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
elog(ERROR,"GEOS convexhull() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
//compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(buffer);
Datum buffer(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
double size;
Geometry *g1,*g3;
LWGEOM *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
size = PG_GETARG_FLOAT8(1);
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1 );
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSBuffer(g1,size);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
elog(ERROR,"GEOS buffer() threw an error!");
GEOSdeleteGeometry(g1);
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(g3, lwgeom_ndims(geom1->type) > 2);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
elog(ERROR,"GEOS buffer() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
//compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(intersection);
Datum intersection(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2,*g3;
LWGEOM *result;
int is3d;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( lwgeom_ndims(geom1->type) > 2 ) ||
( lwgeom_ndims(geom2->type) > 2 );
initGEOS(MAXIMUM_ALIGNOF);
//elog(NOTICE,"intersection() START");
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
//elog(NOTICE," constructed geometrys - calling geos");
//elog(NOTICE,"g1 = %s",GEOSasText(g1));
//elog(NOTICE,"g2 = %s",GEOSasText(g2));
//if (g1==NULL)
// elog(NOTICE,"g1 is null");
//if (g2==NULL)
// elog(NOTICE,"g2 is null");
//elog(NOTICE,"g2 is valid = %i",GEOSisvalid(g2));
//elog(NOTICE,"g1 is valid = %i",GEOSisvalid(g1));
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSIntersection(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
//elog(NOTICE," intersection finished");
if (g3 == NULL)
{
elog(ERROR,"GEOS Intersection() threw an error!");
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
PG_RETURN_NULL(); //never get here
}
//elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
GEOSdeleteGeometry(g3);
elog(ERROR,"GEOS Intersection() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
GEOSdeleteGeometry(g3);
//compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
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)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2,*g3;
LWGEOM *result;
int is3d;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
is3d = ( lwgeom_ndims(geom1->type) > 2 ) ||
( lwgeom_ndims(geom2->type) > 2 );
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSDifference(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
elog(ERROR,"GEOS difference() threw an error!");
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(g3, is3d);
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
GEOSdeleteGeometry(g3);
elog(ERROR,"GEOS difference() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
GEOSdeleteGeometry(g3);
////compressType(result); // convert multi* to single item if appropriate
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, result);
#endif
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)
{
LWGEOM *geom1;
Geometry *g1,*g3;
LWGEOM *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
g3 = GEOSpointonSurface(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if (g3 == NULL)
{
elog(ERROR,"GEOS pointonsurface() threw an error!");
GEOSdeleteGeometry(g1);
PG_RETURN_NULL(); //never get here
}
// elog(NOTICE,"result: %s", GEOSasText(g3) ) ;
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(g3, (lwgeom_ndims(geom1->type) > 2));
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
elog(ERROR,"GEOS pointonsurface() threw an error (result postgis geometry formation)!");
PG_RETURN_NULL(); //never get here
}
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g3);
// convert multi* to single item if appropriate
//compressType(result);
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, result);
#endif
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(centroid);
Datum centroid(PG_FUNCTION_ARGS)
{
LWGEOM *geom, *result;
Geometry *geosgeom, *geosresult;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
geosgeom = POSTGIS2GEOS(geom);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
geosresult = GEOSGetCentroid(geosgeom);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
if ( geosresult == NULL )
{
GEOSdeleteGeometry(geosgeom);
elog(ERROR,"GEOS getCentroid() threw an error!");
PG_RETURN_NULL();
}
#ifdef PROFILE
profstart(PROF_G2P);
#endif
result = GEOS2POSTGIS(geosresult, (lwgeom_ndims(geom->type) > 2));
#ifdef PROFILE
profstop(PROF_G2P);
#endif
if (result == NULL)
{
GEOSdeleteGeometry(geosgeom);
GEOSdeleteGeometry(geosresult);
elog(ERROR,"Error in GEOS-PGIS conversion");
PG_RETURN_NULL();
}
GEOSdeleteGeometry(geosgeom);
GEOSdeleteGeometry(geosresult);
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom, NULL, result);
#endif
PG_RETURN_POINTER(result);
}
//----------------------------------------------
void errorIfGeometryCollection(LWGEOM *g1, 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)
{
LWGEOM *geom1;
bool result;
Geometry *g1;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSisvalid(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
if (result == 2)
{
elog(ERROR,"GEOS isvalid() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, NULL, NULL);
#endif
PG_RETURN_BOOL(result);
}
// overlaps(LWGEOM g1,LWGEOM g2)
// returns if GEOS::g1->overlaps(g2) returns true
// throws an error (elog(ERROR,...)) if GEOS throws an error
PG_FUNCTION_INFO_V1(overlaps);
Datum overlaps(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelateOverlaps(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS overlaps() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(contains);
Datum contains(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelateContains(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS contains() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(within);
Datum within(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelateWithin(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS within() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(crosses);
Datum crosses(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelateCrosses(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS crosses() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(intersects);
Datum intersects(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1 );
g2 = POSTGIS2GEOS(geom2 );
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelateIntersects(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS intersects() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("intr",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(touches);
Datum touches(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1 );
g2 = POSTGIS2GEOS(geom2 );
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelateTouches(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS touches() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(disjoint);
Datum disjoint(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelateDisjoint(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS disjoin() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(relate_pattern);
Datum relate_pattern(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
char *patt;
bool result;
Geometry *g1,*g2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(geom1,geom2);
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
patt = DatumGetCString(DirectFunctionCall1(textout,
PointerGetDatum(PG_GETARG_DATUM(2))));
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSrelatePattern(g1,g2,patt);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
pfree(patt);
if (result == 2)
{
elog(ERROR,"GEOS relate_pattern() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(relate_full);
Datum relate_full(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
char *relate_str;
int len;
char *result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
//elog(NOTICE,"in relate_full()");
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(geom1,geom2);
initGEOS(MAXIMUM_ALIGNOF);
//elog(NOTICE,"GEOS init()");
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1 );
g2 = POSTGIS2GEOS(geom2 );
#ifdef PROFILE
profstop(PROF_P2G);
#endif
//elog(NOTICE,"constructed geometries ");
if ((g1==NULL) || (g2 == NULL))
elog(NOTICE,"g1 or g2 are null");
//elog(NOTICE,GEOSasText(g1));
//elog(NOTICE,GEOSasText(g2));
//elog(NOTICE,"valid g1 = %i", GEOSisvalid(g1));
//elog(NOTICE,"valid g2 = %i",GEOSisvalid(g2));
//elog(NOTICE,"about to relate()");
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
relate_str = GEOSrelate(g1, g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
//elog(NOTICE,"finished relate()");
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (relate_str == NULL)
{
//free(relate_str);
elog(ERROR,"GEOS relate() threw an error!");
PG_RETURN_NULL(); //never get here
}
len = strlen(relate_str) + 4;
result= palloc(len);
*((int *) result) = len;
memcpy(result +4, relate_str, len-4);
free(relate_str);
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_POINTER(result);
}
//==============================
PG_FUNCTION_INFO_V1(geomequals);
Datum geomequals(PG_FUNCTION_ARGS)
{
LWGEOM *geom1;
LWGEOM *geom2;
Geometry *g1,*g2;
bool result;
const BOX2DFLOAT4 *box1, *box2;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom1 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
geom2 = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
errorIfGeometryCollection(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 ( (box1=getbox2d_internal(SERIALIZED_FORM(geom1))) &&
(box2=getbox2d_internal(SERIALIZED_FORM(geom2))) )
{
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);
}
initGEOS(MAXIMUM_ALIGNOF);
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom1);
g2 = POSTGIS2GEOS(geom2);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSequals(g1,g2);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
GEOSdeleteGeometry(g2);
if (result == 2)
{
elog(ERROR,"GEOS equals() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom1, geom2, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(issimple);
Datum issimple(PG_FUNCTION_ARGS)
{
LWGEOM *geom;
Geometry *g1;
int result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom = (LWGEOM *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
if (lwgeom_getnumgeometries(SERIALIZED_FORM(geom)) == 0)
PG_RETURN_BOOL(true);
initGEOS(MAXIMUM_ALIGNOF);
//elog(NOTICE,"GEOS init()");
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom);
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSisSimple(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
if (result == 2)
{
elog(ERROR,"GEOS issimple() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom, NULL, NULL);
#endif
PG_RETURN_BOOL(result);
}
PG_FUNCTION_INFO_V1(isring);
Datum isring(PG_FUNCTION_ARGS)
{
LWGEOM*geom;
Geometry *g1;
int result;
#ifdef PROFILE
profstart(PROF_QRUN);
#endif
geom = (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);
initGEOS(MAXIMUM_ALIGNOF);
//elog(NOTICE,"GEOS init()");
#ifdef PROFILE
profstart(PROF_P2G);
#endif
g1 = POSTGIS2GEOS(geom );
#ifdef PROFILE
profstop(PROF_P2G);
#endif
#ifdef PROFILE
profstart(PROF_GRUN);
#endif
result = GEOSisRing(g1);
#ifdef PROFILE
profstop(PROF_GRUN);
#endif
GEOSdeleteGeometry(g1);
if (result == 2)
{
elog(ERROR,"GEOS isring() threw an error!");
PG_RETURN_NULL(); //never get here
}
#ifdef PROFILE
profstop(PROF_QRUN);
profreport("geos",geom, NULL, NULL);
#endif
PG_RETURN_BOOL(result);
}
//= GEOS <=> POSTGIS CONVERSION =========================
// Return a serialized line from a GEOS geometry (no SRID, no BBOX)
char *PointFromGeometry(Geometry *g, char want3d)
{
POINTARRAY *pa;
LWPOINT *point;
char *srl;
POINT3D *pts;
int ptsize = want3d ? sizeof(POINT3D) : sizeof(POINT2D);
// Construct point array
pa = (POINTARRAY *)palloc(sizeof(POINTARRAY));
pa->ndims = want3d ? 3 : 2;
pa->npoints = 1;
// Fill point array
pa->serialized_pointlist = palloc(ptsize);
pts = GEOSGetCoordinates(g);
memcpy(pa->serialized_pointlist, pts, ptsize);
GEOSdeleteChar( (char*) pts);
// Construct LWPOINT
point = lwpoint_construct(pa->ndims, -1, pa);
// Serialize LWPOINT
srl = lwpoint_serialize(point);
return srl;
}
// Return a serialized line from a GEOS geometry (no SRID no BBOX)
char *LineFromGeometry(Geometry *g, char want3d)
{
POINTARRAY *pa;
LWLINE *line;
int npoints;
char *srl;
POINT3D *pts, *ip, *op;
int ptsize = want3d ? sizeof(POINT3D) : sizeof(POINT2D);
int i;
npoints = GEOSGetNumCoordinate(g);
if (npoints <2) return NULL;
// Construct point array
pa = (POINTARRAY *)palloc(sizeof(POINTARRAY));
pa->ndims = want3d ? 3 : 2;
pa->npoints = npoints;
// Fill point array
pa->serialized_pointlist = palloc(ptsize*npoints);
pts = GEOSGetCoordinates(g);
for (i=0; i<npoints; i++)
{
ip = &(pts[i]);
op = (POINT3D *)getPoint(pa, i);
memcpy(op, ip, ptsize);
}
GEOSdeleteChar( (char*) pts);
// Construct LWPOINT
line = lwline_construct(pa->ndims, -1, pa);
// Serialize LWPOINT
srl = lwline_serialize(line);
return srl;
}
// Return a serialized polygon from a GEOS geometry (no SRID no BBOX)
char *PolyFromGeometry(Geometry *g, char want3d)
{
POINTARRAY **rings, *pa;
LWPOLY *poly;
int ndims = want3d ? 3 : 2;
int nrings;
int npoints;
int i, j;
char *srl;
POINT3D *pts, *ip, *op;
int ptoff=0; // point offset inside POINT3D *
int ptsize = 8*ndims;
// Get number of rings, and pointlist
pts = GEOSGetCoordinates(g);
nrings = GEOSGetNumInteriorRings(g);
rings = (POINTARRAY **)palloc(sizeof(POINTARRAY *)*(nrings+1));
// Exterior ring
npoints = GEOSGetNumCoordinate(GEOSGetExteriorRing(g));
rings[0] = (POINTARRAY *)palloc(sizeof(POINTARRAY));
pa = rings[0];
pa->ndims = ndims;
pa->npoints = npoints;
// Fill point array
pa->serialized_pointlist = palloc(ptsize*npoints);
for (i=0; i<npoints; i++)
{
ip = &(pts[i+ptoff]);
op = (POINT3D *)getPoint(pa, i);
memcpy(op, ip, ptsize);
}
ptoff+=npoints;
// Interior rings
for (j=0; j<nrings; j++)
{
npoints = GEOSGetNumCoordinate(GEOSGetInteriorRingN(g, j));
rings[j+1] = (POINTARRAY *)palloc(sizeof(POINTARRAY));
pa = rings[j+1];
pa->ndims = ndims;
pa->npoints = npoints;
// Fill point array
pa->serialized_pointlist = palloc(ptsize*npoints);
for (i=0; i<npoints; i++)
{
ip = &(pts[i+ptoff]);
op = (POINT3D *)getPoint(pa, i);
memcpy(op, ip, ptsize);
}
ptoff+=npoints;
}
// Construct LWPOLY
poly = lwpoly_construct(pa->ndims, -1, nrings+1, rings);
// Serialize LWPOLY
srl = lwpoly_serialize(poly);
// Get rid of GEOS points...
GEOSdeleteChar( (char*) pts);
return srl;
}
//-----=GEOS2POSTGIS=
/*
* Recursively add a Geometry to the LWGEOM_EXPLODED structure
* The exploded struct contains note about the number of dimensions
* requested.
*/
void
addToExploded_recursive(Geometry *geom, LWGEOM_EXPLODED *exp)
{
char *srl;
int type = GEOSGeometryTypeId(geom) ;
char want3d = exp->ndims > 2 ? 1 : 0;
int ngeoms;
int t;
switch (type)
{
/* From slower to faster.. compensation rule :) */
case COLLECTIONTYPE:
case MULTIPOLYGONTYPE:
case MULTILINETYPE:
case MULTIPOINTTYPE:
//this is more difficult because GEOS allows GCs of GCs
ngeoms = GEOSGetNumGeometries(geom);
#ifdef DEBUG_GEOS2POSTGIS
elog(NOTICE, "GEOS2POSTGIS: It's a MULTI (of %d elems)", ngeoms);
#endif
if (ngeoms == 0)
{
return; // skip EMPTY geoms
}
if (ngeoms == 1) {
Geometry *g = GEOSGetGeometryN(geom, 0);
// short cut!
return addToExploded_recursive(g, exp);
}
for (t=0; t<ngeoms; t++) {
Geometry *g = GEOSGetGeometryN(geom, t);
addToExploded_recursive(g, exp);
}
return;
case POLYGONTYPE:
#ifdef DEBUG_GEOS2POSTGIS
elog(NOTICE, "GEOS2POSTGIS: It's a POLYGON");
#endif
srl = PolyFromGeometry(geom, want3d);
if (srl == NULL) return;
exp->npolys++;
exp->polys = repalloc(exp->polys,
sizeof(char *)*exp->npolys);
exp->polys[exp->npolys-1] = srl;
return;
case LINETYPE:
#ifdef DEBUG_GEOS2POSTGIS
elog(NOTICE, "GEOS2POSTGIS: It's a LINE");
#endif
srl = LineFromGeometry(geom, want3d);
if (srl == NULL) return;
exp->nlines++;
exp->lines = repalloc(exp->lines,
sizeof(char *)*exp->nlines);
exp->lines[exp->nlines-1] = srl;
return;
case POINTTYPE:
#ifdef DEBUG_GEOS2POSTGIS
elog(NOTICE, "GEOS2POSTGIS: It's a POINT");
#endif
srl = PointFromGeometry(geom, want3d);
if (srl == NULL) return;
exp->npoints++;
exp->points = repalloc(exp->points,
sizeof(char *)*exp->npoints);
exp->points[exp->npoints-1] = srl;
return;
default:
#ifdef DEBUG_GEOS2POSTGIS
elog(NOTICE, "GEOS2POSTGIS: It's UNKNOWN!");
#endif
return;
}
}
LWGEOM *
GEOS2POSTGIS(Geometry *geom, char want3d)
{
LWGEOM *result;
LWGEOM_EXPLODED *oexp;
int SRID;
int wantbbox = 0; // might as well be 1 ...
int size;
SRID = GEOSGetSRID(geom);
// Initialize exploded lwgeom
oexp = (LWGEOM_EXPLODED *)palloc(sizeof(LWGEOM_EXPLODED));
oexp->SRID = SRID;
oexp->ndims = want3d ? 3 : 2;
oexp->npoints = 0;
oexp->points = palloc(sizeof(char *));
oexp->nlines = 0;
oexp->lines = palloc(sizeof(char *));
oexp->npolys = 0;
oexp->polys = palloc(sizeof(char *));
addToExploded_recursive(geom, oexp);
size = lwexploded_findlength(oexp, wantbbox);
size += 4; // postgresql size header
result = palloc(size);
result->size = size;
lwexploded_serialize_buf(oexp, wantbbox, SERIALIZED_FORM(result), NULL);
return result;
}
//-----=POSTGIS2GEOS=
Geometry *
POSTGIS2GEOS(LWGEOM *geom)
{
LWPOINT *point;
LWLINE *line;
LWPOLY *poly;
LWGEOM_EXPLODED *exploded;
int type;
int i, j;
Geometry **collected;
int ncollected;
Geometry *ret=NULL;
type = lwgeom_getType(geom->type);
switch (type)
{
case POINTTYPE:
#ifdef DEBUG_POSTGIS2GEOS
elog(NOTICE, "POSTGIS2GEOS: it's a point");
#endif
point = lwpoint_deserialize(SERIALIZED_FORM(geom));
ret = PostGIS2GEOS_point(point);
break;
case LINETYPE:
#ifdef DEBUG_POSTGIS2GEOS
elog(NOTICE, "POSTGIS2GEOS: it's a line");
#endif
line = lwline_deserialize(SERIALIZED_FORM(geom));
ret = PostGIS2GEOS_linestring(line);
break;
case POLYGONTYPE:
#ifdef DEBUG_POSTGIS2GEOS
elog(NOTICE, "POSTGIS2GEOS: it's a polygon");
#endif
poly = lwpoly_deserialize(SERIALIZED_FORM(geom));
ret = PostGIS2GEOS_polygon(poly);
break;
default:
break;
}
if ( ret )
{
return ret;
}
#ifdef DEBUG_POSTGIS2GEOS
elog(NOTICE, "POSTGIS2GEOS: out of switch");
#endif
// Since it is not a base type, let's explode...
exploded = lwgeom_explode(SERIALIZED_FORM(geom));
#ifdef DEBUG_POSTGIS2GEOS
elog(NOTICE, "POSTGIS2GEOS: exploded produced");
#endif
ncollected = exploded->npoints + exploded->nlines + exploded->npolys;
#ifdef DEBUG_POSTGIS2GEOS
elog(NOTICE, "POSTGIS2GEOS: it's a collection of %d elems", ncollected);
#endif
collected = (Geometry **)palloc(sizeof(Geometry *)*ncollected);
j=0;
for (i=0; i<exploded->npoints; i++)
{
point = lwpoint_deserialize(exploded->points[i]);
collected[j++] = PostGIS2GEOS_point(point);
}
for (i=0; i<exploded->nlines; i++)
{
line = lwline_deserialize(exploded->lines[j]);
collected[j++] = PostGIS2GEOS_linestring(line);
}
for (i=0; i<exploded->npolys; i++)
{
poly = lwpoly_deserialize(exploded->polys[i]);
collected[j++] = PostGIS2GEOS_polygon(poly);
}
ret = PostGIS2GEOS_collection(collected, ncollected,
exploded->SRID, exploded->ndims > 2);
return ret;
}
PG_FUNCTION_INFO_V1(GEOSnoop);
Datum GEOSnoop(PG_FUNCTION_ARGS)
{
LWGEOM *geom;
Geometry *geosgeom;
LWGEOM *result;
initGEOS(MAXIMUM_ALIGNOF);
geom = (LWGEOM *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
#ifdef DEBUG_CONVERTER
elog(NOTICE, "GEOSnoop: IN: %s", unparse_WKT((char *)geom, malloc, free));
#endif
geosgeom = POSTGIS2GEOS(geom);
//if ( (Pointer *)geom != (Pointer *)PG_GETARG_DATUM(0) ) pfree(geom);
if ( ! geosgeom ) PG_RETURN_NULL();
#ifdef PROFILE
profstart(PROF_GRUN);
profstop(PROF_GRUN);
#endif
result = GEOS2POSTGIS(geosgeom, lwgeom_ndims(geom->type) > 2);
GEOSdeleteGeometry(geosgeom);
#ifdef DEBUG_CONVERTER
elog(NOTICE, "GEOSnoop: OUT: %s", unparse_WKT((char *)result, malloc, free));
#endif
PG_RETURN_POINTER(result);
}
#else // ! USE_GEOS
PG_FUNCTION_INFO_V1(postgis_geos_version);
Datum postgis_geos_version(PG_FUNCTION_ARGS)
{
//elog(ERROR,"GEOSversion:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(intersection);
Datum intersection(PG_FUNCTION_ARGS)
{
elog(ERROR,"intersection:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(convexhull);
Datum convexhull(PG_FUNCTION_ARGS)
{
elog(ERROR,"convexhull:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(difference);
Datum difference(PG_FUNCTION_ARGS)
{
elog(ERROR,"difference:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(boundary);
Datum boundary(PG_FUNCTION_ARGS)
{
elog(ERROR,"boundary:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(symdifference);
Datum symdifference(PG_FUNCTION_ARGS)
{
elog(ERROR,"symdifference:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(geomunion);
Datum geomunion(PG_FUNCTION_ARGS)
{
elog(ERROR,"geomunion:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(buffer);
Datum buffer(PG_FUNCTION_ARGS)
{
elog(ERROR,"buffer:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(relate_full);
Datum relate_full(PG_FUNCTION_ARGS)
{
elog(ERROR,"relate_full:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(relate_pattern);
Datum relate_pattern(PG_FUNCTION_ARGS)
{
elog(ERROR,"relate_pattern:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(disjoint);
Datum disjoint(PG_FUNCTION_ARGS)
{
elog(ERROR,"disjoint:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(intersects);
Datum intersects(PG_FUNCTION_ARGS)
{
elog(ERROR,"intersects:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(touches);
Datum touches(PG_FUNCTION_ARGS)
{
elog(ERROR,"touches:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(crosses);
Datum crosses(PG_FUNCTION_ARGS)
{
elog(ERROR,"crosses:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(within);
Datum within(PG_FUNCTION_ARGS)
{
elog(ERROR,"within:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(contains);
Datum contains(PG_FUNCTION_ARGS)
{
elog(ERROR,"contains:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(overlaps);
Datum overlaps(PG_FUNCTION_ARGS)
{
elog(ERROR,"overlaps:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(isvalid);
Datum isvalid(PG_FUNCTION_ARGS)
{
elog(ERROR,"isvalid:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(issimple);
Datum issimple(PG_FUNCTION_ARGS)
{
elog(ERROR,"issimple:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(geomequals);
Datum geomequals(PG_FUNCTION_ARGS)
{
elog(ERROR,"geomequals:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(isring);
Datum isring(PG_FUNCTION_ARGS)
{
elog(ERROR,"isring:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(pointonsurface);
Datum pointonsurface(PG_FUNCTION_ARGS)
{
elog(ERROR,"pointonsurface:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
PG_FUNCTION_INFO_V1(unite_garray);
Datum unite_garray(PG_FUNCTION_ARGS)
{
elog(ERROR,"unite_garray:: operation not implemented - compile PostGIS with GEOS support");
PG_RETURN_NULL(); // never get here
}
#endif // ! USE_GEOS
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