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https://git.osgeo.org/gitea/postgis/postgis
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117 lines
2.3 KiB
C
117 lines
2.3 KiB
C
/**********************************************************************
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* $Id$
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*
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* PostGIS - Spatial Types for PostgreSQL
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* http://postgis.refractions.net
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* Copyright 2001-2006 Refractions Research Inc.
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU General Public Licence. See the COPYING file.
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*
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**********************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "liblwgeom.h"
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void
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lwmpoly_release(LWMPOLY *lwmpoly)
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{
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lwgeom_release(lwmpoly_as_lwgeom(lwmpoly));
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}
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LWMPOLY *
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lwmpoly_construct_empty(int srid, char hasz, char hasm)
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{
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LWMPOLY *ret = (LWMPOLY*)lwcollection_construct_empty(srid, hasz, hasm);
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TYPE_SETTYPE(ret->type, MULTIPOLYGONTYPE);
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return ret;
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}
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LWMPOLY *
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lwmpoly_deserialize(uchar *srl)
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{
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LWMPOLY *result;
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LWGEOM_INSPECTED *insp;
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int type = lwgeom_getType(srl[0]);
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int i;
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LWDEBUG(2, "lwmpoly_deserialize called");
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if ( type != MULTIPOLYGONTYPE )
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{
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lwerror("lwmpoly_deserialize called on NON multipoly: %d",
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type);
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return NULL;
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}
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insp = lwgeom_inspect(srl);
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result = lwalloc(sizeof(LWMPOLY));
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result->type = insp->type;
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result->SRID = insp->SRID;
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result->ngeoms = insp->ngeometries;
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if ( insp->ngeometries )
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{
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result->geoms = lwalloc(sizeof(LWPOLY *)*insp->ngeometries);
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}
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else
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{
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result->geoms = NULL;
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}
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if (lwgeom_hasBBOX(srl[0]))
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{
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result->bbox = lwalloc(sizeof(BOX2DFLOAT4));
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memcpy(result->bbox, srl+1, sizeof(BOX2DFLOAT4));
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}
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else result->bbox = NULL;
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for (i=0; i<insp->ngeometries; i++)
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{
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result->geoms[i] = lwpoly_deserialize(insp->sub_geoms[i]);
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if ( TYPE_NDIMS(result->geoms[i]->type) != TYPE_NDIMS(result->type) )
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{
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lwerror("Mixed dimensions (multipoly:%d, poly%d:%d)",
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TYPE_NDIMS(result->type), i,
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TYPE_NDIMS(result->geoms[i]->type)
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);
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return NULL;
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}
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}
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return result;
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}
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LWMPOLY* lwmpoly_add_lwpoly(LWMPOLY *mobj, const LWPOLY *obj)
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{
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return (LWMPOLY*)lwcollection_add_lwgeom((LWCOLLECTION*)mobj, (LWGEOM*)obj);
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}
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void lwmpoly_free(LWMPOLY *mpoly)
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{
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int i;
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if ( mpoly->bbox )
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{
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lwfree(mpoly->bbox);
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}
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for ( i = 0; i < mpoly->ngeoms; i++ )
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{
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if ( mpoly->geoms[i] )
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{
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lwpoly_free(mpoly->geoms[i]);
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}
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}
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if ( mpoly->geoms )
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{
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lwfree(mpoly->geoms);
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}
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lwfree(mpoly);
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}
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