mirror of
https://git.osgeo.org/gitea/postgis/postgis
synced 2024-10-26 10:02:50 +00:00
751e433c78
git-svn-id: http://svn.osgeo.org/postgis/trunk@308 b70326c6-7e19-0410-871a-916f4a2858ee
978 lines
17 KiB
C++
978 lines
17 KiB
C++
// g++ postgis_GEOSwrapper.cpp -c -I/usr/local/include -I/usr/local/include/geos -I/usr/local/src/postgresql-7.2.3//src/include
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#include <stdio.h>
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#include <string>
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#include <iostream>
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#include <fstream>
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#include "geom.h"
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using namespace geos;
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//WARNING THIS *MUST* BE SET CORRECTLY.
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int MAXIMUM_ALIGNOF = -999999; // to be set during initialization - this will be either 4 (intel) or 8 (sparc)
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//for getting things to align properly double are on 8byte align on solaris machines, and 4bytes on intel
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#define TYPEALIGN(ALIGNVAL,LEN) (((long)(LEN) + (ALIGNVAL-1)) & ~(ALIGNVAL-1))
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#define MAXALIGN(LEN) TYPEALIGN(MAXIMUM_ALIGNOF, (LEN))
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typedef int int32;
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typedef struct
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{
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double x,y,z; //for lat/long x=long, y=lat
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} POINT3D;
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typedef struct
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{
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POINT3D LLB,URT; /* corner POINT3Ds on long diagonal */
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} BOX3D;
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typedef struct
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{
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int32 npoints; // how many points in the line
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int32 junk; // double-word alignment
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POINT3D points[1]; // array of actual points
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} LINE3D;
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typedef struct
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{
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int32 nrings; // how many rings in this polygon
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int32 npoints[1]; //how many points in each ring
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/* could be 4 byes of filler here to make sure points[] is
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double-word aligned*/
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POINT3D points[1]; // array of actual points
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} POLYGON3D;
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//###########################################################
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extern "C" char *GEOSrelate(Geometry *g1, Geometry*g2);
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extern "C" void initGEOS(int maxalign);
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extern "C" void GEOSdeleteChar(char *a);
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extern "C" void GEOSdeleteGeometry(Geometry *a);
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extern "C" char GEOSrelatePattern(Geometry *g1, Geometry*g2,char *pat);
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extern "C" char GEOSrelateDisjoint(Geometry *g1, Geometry*g2);
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extern "C" char GEOSrelateTouches(Geometry *g1, Geometry*g2);
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extern "C" char GEOSrelateIntersects(Geometry *g1, Geometry*g2);
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extern "C" char GEOSrelateCrosses(Geometry *g1, Geometry*g2);
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extern "C" char GEOSrelateWithin(Geometry *g1, Geometry*g2);
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extern "C" char GEOSrelateContains(Geometry *g1, Geometry*g2);
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extern "C" char GEOSrelateOverlaps(Geometry *g1, Geometry*g2);
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extern "C" Geometry *PostGIS2GEOS_point(POINT3D *point,int SRID, bool is3d);
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extern "C" Geometry *PostGIS2GEOS_linestring(LINE3D *line,int SRID, bool is3d);
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extern "C" Geometry *PostGIS2GEOS_polygon(POLYGON3D *polygon,int SRID, bool is3d);
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extern "C" Geometry *PostGIS2GEOS_multipolygon(POLYGON3D **polygons,int npolys, int SRID, bool is3d);
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extern "C" Geometry *PostGIS2GEOS_multilinestring(LINE3D **lines,int nlines, int SRID, bool is3d);
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extern "C" Geometry *PostGIS2GEOS_multipoint(POINT3D **points,int npoints, int SRID, bool is3d);
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extern "C" Geometry *PostGIS2GEOS_box3d(BOX3D *box, int SRID);
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extern "C" Geometry *PostGIS2GEOS_collection(Geometry **geoms, int ngeoms,int SRID, bool is3d);
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extern "C" char GEOSisvalid(Geometry *g1);
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extern "C" char *GEOSasText(Geometry *g1);
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extern "C" char GEOSisEmpty(Geometry *g1);
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extern "C" char *GEOSGeometryType(Geometry *g1);
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extern "C" char *throw_exception(Geometry *g);
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extern "C" Geometry *GEOSIntersection(Geometry *g1,Geometry *g1);
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extern "C" Geometry *GEOSBuffer(Geometry *g1,double width);
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extern "C" Geometry *GEOSConvexHull(Geometry *g1);
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extern "C" Geometry *GEOSDifference(Geometry *g1,Geometry *g2);
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extern "C" Geometry *GEOSBoundary(Geometry *g1);
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extern "C" Geometry *GEOSSymDifference(Geometry *g1,Geometry *g2);
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extern "C" Geometry *GEOSUnion(Geometry *g1,Geometry *g2);
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extern "C" POINT3D *GEOSGetCoordinate(Geometry *g1);
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extern "C" POINT3D *GEOSGetCoordinates(Geometry *g1);
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extern "C" int GEOSGetNumCoordinate(Geometry *g1);
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extern "C" const Geometry *GEOSGetGeometryN(Geometry *g1, int n);
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extern "C" const Geometry *GEOSGetExteriorRing(Geometry *g1);
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extern "C" const Geometry *GEOSGetInteriorRingN(Geometry *g1, int n);
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extern "C" int GEOSGetNumInteriorRings(Geometry *g1);
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extern "C" int GEOSGetSRID(Geometry *g1);
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extern "C" int GEOSGetNumGeometries(Geometry *g1);
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extern "C" char GEOSisSimple(Geometry *g1);
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extern "C" char GEOSequals(Geometry *g1, Geometry*g2);
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extern "C" char GEOSisRing(Geometry *g1);
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extern "C" Geometry *GEOSpointonSurface(Geometry *g1);
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//###########################################################
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GeometryFactory *geomFactory = NULL;
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void initGEOS (int maxalign)
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{
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if (geomFactory == NULL)
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{
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geomFactory = new GeometryFactory( new PrecisionModel(), -1); // NOTE: SRID will have to be changed after geometry creation
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MAXIMUM_ALIGNOF = maxalign;
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}
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}
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// ------------------------------------------------------------------------------
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// geometry constuctors - return NULL if there was an error
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//-------------------------------------------------------------------------------
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//note: you lose the 3d from this!
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Geometry *PostGIS2GEOS_box3d(BOX3D *box, int SRID)
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{
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try {
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Geometry *g;
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Envelope *envelope = new Envelope(box->LLB.x,box->URT.x ,box->LLB.y,box->URT.y);
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g = geomFactory->toGeometry(envelope,geomFactory->getPrecisionModel(), SRID);
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if (g==NULL)
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return NULL;
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g->setSRID(SRID);
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delete envelope;
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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Geometry *PostGIS2GEOS_collection(Geometry **geoms, int ngeoms,int SRID, bool is3d)
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{
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try
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{
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Geometry *g;
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int t;
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vector<Geometry *> *subGeos=new vector<Geometry *>;
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for (t =0; t< ngeoms; t++)
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{
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subGeos->push_back(geoms[t]);
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}
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g = geomFactory->buildGeometry(subGeos);
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if (g==NULL)
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return NULL;
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g->setSRID(SRID);
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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Geometry *PostGIS2GEOS_point(POINT3D *point,int SRID, bool is3d)
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{
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try
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{
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Coordinate *c;
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if (is3d)
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c = new Coordinate(point->x, point->y);
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else
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c = new Coordinate(point->x, point->y, point->z);
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Geometry *g = geomFactory->createPoint(*c);
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if (g==NULL)
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return NULL;
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g->setSRID(SRID);
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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Geometry *PostGIS2GEOS_linestring(LINE3D *line,int SRID, bool is3d)
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{
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try{
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int t;
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Coordinate c;
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//build coordinatelist & pre-allocate space
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BasicCoordinateList *coords = new BasicCoordinateList(line->npoints);
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if (is3d)
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{
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for (t=0;t<line->npoints;t++)
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{
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c.x = line->points[t].x;
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c.y = line->points[t].y;
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c.z = line->points[t].z;
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coords->setAt( c ,t);
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}
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}
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else //make 2d points
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{
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for (t=0;t<line->npoints;t++)
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{
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c.x = line->points[t].x;
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c.y = line->points[t].y;
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c.z = DoubleNotANumber;
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coords->setAt( c ,t);
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}
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}
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Geometry *g = geomFactory->createLineString(coords);
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if (g==NULL)
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return NULL;
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g->setSRID(SRID);
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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//polygons is an array of pointers to polygons
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Geometry *PostGIS2GEOS_multipolygon(POLYGON3D **polygons,int npolys, int SRID, bool is3d)
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{
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try
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{
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int t;
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vector<Geometry *> *subPolys=NULL;
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Geometry *g;
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subPolys=new vector<Geometry *>;
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for (t =0; t< npolys; t++)
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{
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subPolys->push_back(PostGIS2GEOS_polygon(polygons[t], SRID,is3d ));
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}
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g = geomFactory->createMultiPolygon(subPolys);
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if (subPolys != NULL)
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{
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delete subPolys;
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}
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if (g== NULL)
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return NULL;
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g->setSRID(SRID);
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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//lines is an array of pointers to line3d
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Geometry *PostGIS2GEOS_multilinestring(LINE3D **lines,int nlines, int SRID, bool is3d)
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{
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try
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{
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int t;
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vector<Geometry *> *subLines =new vector<Geometry *>;
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Geometry *g;
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for (t =0; t< nlines; t++)
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{
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subLines->push_back(PostGIS2GEOS_linestring(lines[t], SRID,is3d ));
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}
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g = geomFactory->createMultiLineString(subLines);
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if (g==NULL)
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return NULL;
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g->setSRID(SRID);
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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Geometry *PostGIS2GEOS_multipoint(POINT3D **points,int npoints, int SRID, bool is3d)
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{
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try
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{
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int t;
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vector<Geometry *> *subPoints =new vector<Geometry *>;
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Geometry *g;
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for (t =0; t< npoints; t++)
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{
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subPoints->push_back(PostGIS2GEOS_point(points[t], SRID,is3d ));
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}
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g = geomFactory->createMultiPoint(subPoints);
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if (g==NULL)
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return NULL;
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g->setSRID(SRID);
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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Geometry *PostGIS2GEOS_polygon(POLYGON3D *polygon,int SRID, bool is3d)
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{
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try
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{
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POINT3D *pts;
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Coordinate c;
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int ring,t;
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Geometry *g;
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LinearRing *outerRing;
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LinearRing *innerRing;
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BasicCoordinateList *cl;
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int pointOffset =0; // first point that we're looking at. a POLYGON3D has all its points smooshed together
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vector<Geometry *> *innerRings=new vector<Geometry *>;
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pts = (POINT3D *) ( (char *)&(polygon->npoints[polygon->nrings] ) );
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pts = (POINT3D *) MAXALIGN(pts);
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// make outerRing
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cl = new BasicCoordinateList(polygon->npoints[0]);
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if (is3d)
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{
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for(t=0;t<polygon->npoints[0];t++)
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{
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c.x = pts[t].x;
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c.y = pts[t].y;
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c.z = pts[t].z;
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cl->setAt( c ,t);
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}
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}
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else
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{
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for(t=0;t<polygon->npoints[0];t++)
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{
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c.x = pts[t].x;
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c.y = pts[t].y;
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c.z = DoubleNotANumber;
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cl->setAt( c ,t);
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}
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}
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outerRing = (LinearRing*) geomFactory->createLinearRing(cl);
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if (outerRing == NULL)
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return NULL;
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outerRing->setSRID(SRID);
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pointOffset = polygon->npoints[0];
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for(ring =1; ring< polygon->nrings; ring++)
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{
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cl = new BasicCoordinateList(polygon->npoints[ring]);
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if (is3d)
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{
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for(t=0;t<polygon->npoints[ring];t++)
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{
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c.x = pts[t+pointOffset].x;
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c.y = pts[t+pointOffset].y;
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c.z = pts[t+pointOffset].z;
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cl->setAt( c ,t);
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}
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}
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else
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{
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for(t=0;t<polygon->npoints[ring];t++)
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{
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c.x = pts[t+pointOffset].x;
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c.y = pts[t+pointOffset].y;
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c.z = DoubleNotANumber;
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cl->setAt( c ,t);
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}
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}
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innerRing = (LinearRing *) geomFactory->createLinearRing(cl);
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if (innerRing == NULL)
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return NULL;
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innerRing->setSRID(SRID);
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innerRings->push_back(innerRing);
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pointOffset += polygon->npoints[ring];
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}
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g = geomFactory->createPolygon(outerRing, innerRings);
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if (g==NULL)
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return NULL;
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g->setSRID(SRID);
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return g;
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}
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catch (...)
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{
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return NULL;
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}
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}
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//-----------------------------------------------------------
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// relate()-related functions
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// return 0 = false, 1 = true, 2 = error occured
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//-----------------------------------------------------------
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char GEOSrelateDisjoint(Geometry *g1, Geometry*g2)
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{
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try {
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bool result;
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result = g1->disjoint(g2);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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char GEOSrelateTouches(Geometry *g1, Geometry*g2)
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{
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try {
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bool result;
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result = g1->touches(g2);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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char GEOSrelateIntersects(Geometry *g1, Geometry*g2)
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{
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try {
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bool result;
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result = g1->intersects(g2);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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char GEOSrelateCrosses(Geometry *g1, Geometry*g2)
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{
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try {
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bool result;
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result = g1->crosses(g2);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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char GEOSrelateWithin(Geometry *g1, Geometry*g2)
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{
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try {
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bool result;
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result = g1->within(g2);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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// call g1->contains(g2)
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// returns 0 = false
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// 1 = true
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// 2 = error was trapped
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char GEOSrelateContains(Geometry *g1, Geometry*g2)
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{
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try {
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bool result;
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result = g1->contains(g2);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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char GEOSrelateOverlaps(Geometry *g1, Geometry*g2)
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{
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try {
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bool result;
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result = g1->overlaps(g2);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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//-------------------------------------------------------------------
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// low-level relate functions
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//------------------------------------------------------------------
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char GEOSrelatePattern(Geometry *g1, Geometry*g2,char *pat)
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{
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try {
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bool result;
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string s = pat;
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result = g1->relate(g2,pat);
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return result;
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}
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catch (...)
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{
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return 2;
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}
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}
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char *GEOSrelate(Geometry *g1, Geometry*g2)
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{
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try {
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IntersectionMatrix *im = g1->relate(g2);
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string s;
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char *result;
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if (im == NULL)
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return NULL;
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s= im->toString();
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result = (char*) malloc( s.length() + 1);
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strcpy(result, s.c_str() );
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return result;
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}
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catch (...)
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{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//-----------------------------------------------------------------
|
|
// isValid
|
|
//-----------------------------------------------------------------
|
|
|
|
|
|
char GEOSisvalid(Geometry *g1)
|
|
{
|
|
try {
|
|
bool result;
|
|
result =g1->isValid();
|
|
return result;
|
|
}
|
|
catch (...)
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------
|
|
// general purpose
|
|
//-----------------------------------------------------------------
|
|
|
|
char GEOSequals(Geometry *g1, Geometry*g2)
|
|
{
|
|
try {
|
|
bool result;
|
|
result = g1->equals(g2);
|
|
return result;
|
|
}
|
|
catch (...)
|
|
{
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
char *GEOSasText(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
string s = g1->toString();
|
|
|
|
|
|
char *result;
|
|
result = (char*) malloc( s.length() + 1);
|
|
strcpy(result, s.c_str() );
|
|
return result;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
char GEOSisEmpty(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
return g1->isEmpty();
|
|
}
|
|
catch (...)
|
|
{
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
char GEOSisSimple(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
return g1->isSimple();
|
|
}
|
|
catch (...)
|
|
{
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
char GEOSisRing(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
return (( (LinearRing*)g1)->isRing());
|
|
}
|
|
catch (...)
|
|
{
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//free the result of this
|
|
char *GEOSGeometryType(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
string s = g1->getGeometryType();
|
|
|
|
|
|
char *result;
|
|
result = (char*) malloc( s.length() + 1);
|
|
strcpy(result, s.c_str() );
|
|
return result;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
//-------------------------------------------------------------------
|
|
// GEOS functions that return geometries
|
|
//-------------------------------------------------------------------
|
|
|
|
Geometry *GEOSIntersection(Geometry *g1,Geometry *g2)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->intersection(g2);
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
Geometry *GEOSBuffer(Geometry *g1,double width)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->buffer(width);
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
Geometry *GEOSConvexHull(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->convexHull();
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
Geometry *GEOSDifference(Geometry *g1,Geometry *g2)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->difference(g2);
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
Geometry *GEOSBoundary(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->getBoundary();
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
Geometry *GEOSSymDifference(Geometry *g1,Geometry *g2)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->symDifference(g2);
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
Geometry *GEOSUnion(Geometry *g1,Geometry *g2)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->Union(g2);
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
Geometry *GEOSpointonSurface(Geometry *g1)
|
|
{
|
|
try
|
|
{
|
|
Geometry *g3 = g1->getInteriorPoint();
|
|
return g3;
|
|
}
|
|
catch (...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//-------------------------------------------------------------------
|
|
// memory management functions
|
|
//------------------------------------------------------------------
|
|
|
|
|
|
//BUG:: this leaks memory, but delete kills the PrecisionModel for ALL the geometries
|
|
void GEOSdeleteGeometry(Geometry *a)
|
|
{
|
|
try{
|
|
delete a;
|
|
}
|
|
catch(...)
|
|
{
|
|
// do nothing!
|
|
}
|
|
}
|
|
|
|
void GEOSdeleteChar(char *a)
|
|
{
|
|
try{
|
|
free(a);
|
|
}
|
|
catch(...)
|
|
{
|
|
// do nothing!
|
|
}
|
|
}
|
|
|
|
|
|
//-------------------------------------------------------------------
|
|
//GEOS => POSTGIS conversions
|
|
//-------------------------------------------------------------------
|
|
|
|
|
|
// free the result when done!
|
|
// g1 must be a point
|
|
POINT3D *GEOSGetCoordinate(Geometry *g1)
|
|
{
|
|
try{
|
|
POINT3D *result = (POINT3D*) malloc (sizeof(POINT3D));
|
|
const Coordinate *c =g1->getCoordinate();
|
|
|
|
result->x = c->x;
|
|
result->y = c->y;
|
|
result->z = c->z;
|
|
return result;
|
|
}
|
|
catch(...)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
//must free the result when done
|
|
// result is an array length g1->getNumCoordinates()
|
|
// only call on linestrings or linearrings
|
|
POINT3D *GEOSGetCoordinates(Geometry *g1)
|
|
{
|
|
try {
|
|
int numPoints = g1->getNumPoints();
|
|
POINT3D *result = (POINT3D*) malloc (sizeof(POINT3D) * numPoints );
|
|
int t;
|
|
CoordinateList *cl = g1->getCoordinates();
|
|
Coordinate c;
|
|
|
|
for (t=0;t<numPoints;t++)
|
|
{
|
|
c =cl->getAt(t);
|
|
|
|
result[t].x = c.x;
|
|
result[t].y = c.y;
|
|
result[t].z = c.z;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
catch(...)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int GEOSGetNumCoordinate(Geometry *g1)
|
|
{
|
|
try{
|
|
return g1->getNumPoints();
|
|
}
|
|
catch(...)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int GEOSGetNumInteriorRings(Geometry *g1)
|
|
{
|
|
try{
|
|
Polygon *p = (Polygon *) g1;
|
|
return p->getNumInteriorRing();
|
|
}
|
|
catch(...)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
//only call on GCs (or multi*)
|
|
int GEOSGetNumGeometries(Geometry *g1)
|
|
{
|
|
try{
|
|
GeometryCollection *gc = (GeometryCollection *) g1;
|
|
return gc->getNumGeometries();
|
|
}
|
|
catch(...)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
//call only on GEOMETRYCOLLECTION or MULTI*
|
|
const Geometry *GEOSGetGeometryN(Geometry *g1, int n)
|
|
{
|
|
try{
|
|
const GeometryCollection *gc = (GeometryCollection *) g1;
|
|
return gc->getGeometryN(n);
|
|
}
|
|
catch(...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
//call only on polygon
|
|
const Geometry *GEOSGetExteriorRing(Geometry *g1)
|
|
{
|
|
try{
|
|
Polygon *p = (Polygon *) g1;
|
|
return p->getExteriorRing();
|
|
}
|
|
catch(...)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
//call only on polygon
|
|
const Geometry *GEOSGetInteriorRingN(Geometry *g1,int n)
|
|
{
|
|
try{
|
|
Polygon *p = (Polygon *) g1;
|
|
return p->getInteriorRingN(n);
|
|
}
|
|
catch(...)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
int GEOSGetSRID(Geometry *g1)
|
|
{
|
|
try{
|
|
return g1->getSRID();
|
|
}
|
|
catch(...)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
|