d3cf06c2e0
function analogues to ST_ClusterIntersecting and ST_ClusterWithin. New functions return a cluster id within the current window partition, which should be easier to work with than the large collections returned by the older functions.
54 lines
2.2 KiB
C
54 lines
2.2 KiB
C
/**********************************************************************
|
|
*
|
|
* PostGIS - Spatial Types for PostgreSQL
|
|
* http://postgis.net
|
|
*
|
|
* PostGIS is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* PostGIS is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
**********************************************************************
|
|
*
|
|
* Copyright 2011 Sandro Santilli <strk@kbt.io>
|
|
* Copyright 2018 Darafei Praliaskouski <me@komzpa.net>
|
|
*
|
|
**********************************************************************/
|
|
|
|
#include "geos_c.h"
|
|
|
|
#include "liblwgeom.h"
|
|
#include "lwunionfind.h"
|
|
|
|
/*
|
|
** Public prototypes for GEOS utility functions.
|
|
*/
|
|
LWGEOM* GEOS2LWGEOM(const GEOSGeometry* geom, uint8_t want3d);
|
|
GEOSGeometry* LWGEOM2GEOS(const LWGEOM* g, uint8_t autofix);
|
|
GEOSGeometry* GBOX2GEOS(const GBOX* g);
|
|
#if POSTGIS_GEOS_VERSION < 30800
|
|
GEOSGeometry* LWGEOM_GEOS_buildArea(const GEOSGeometry* geom_in);
|
|
GEOSGeometry* LWGEOM_GEOS_makeValid(const GEOSGeometry*);
|
|
#endif
|
|
|
|
GEOSGeometry* make_geos_point(double x, double y);
|
|
GEOSGeometry* make_geos_segment(double x1, double y1, double x2, double y2);
|
|
|
|
int cluster_intersecting(GEOSGeometry **geoms, uint32_t num_geoms, GEOSGeometry ***clusterGeoms, uint32_t *num_clusters);
|
|
int union_intersecting_pairs(GEOSGeometry** geoms, uint32_t num_geoms, UNIONFIND* uf);
|
|
int cluster_within_distance(LWGEOM **geoms, uint32_t num_geoms, double tolerance, LWGEOM ***clusterGeoms, uint32_t *num_clusters);
|
|
int union_dbscan(LWGEOM **geoms, uint32_t num_geoms, UNIONFIND *uf, double eps, uint32_t min_points, char **is_in_cluster_ret);
|
|
|
|
POINTARRAY* ptarray_from_GEOSCoordSeq(const GEOSCoordSequence* cs, uint8_t want3d);
|
|
|
|
extern char lwgeom_geos_errmsg[];
|
|
extern void lwgeom_geos_error(const char* fmt, ...);
|