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88 lines
2.2 KiB
C
88 lines
2.2 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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/* basic LWCURVEPOLY manipulation */
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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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LWCURVEPOLY *
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lwcurvepoly_deserialize(uchar *srl)
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{
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LWCURVEPOLY *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(3, "lwcurvepoly_deserialize called.");
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if (type != CURVEPOLYTYPE)
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{
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lwerror("lwcurvepoly_deserialize called on NON curvepoly: %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(LWCURVEPOLY));
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result->type = insp->type;
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result->SRID = insp->SRID;
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result->nrings = insp->ngeometries;
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result->rings = lwalloc(sizeof(LWGEOM *)*insp->ngeometries);
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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->rings[i] = lwgeom_deserialize(insp->sub_geoms[i]);
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if (lwgeom_getType(result->rings[i]->type) != CIRCSTRINGTYPE
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&& lwgeom_getType(result->rings[i]->type) != LINETYPE
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&& lwgeom_getType(result->rings[i]->type) != COMPOUNDTYPE)
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{
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lwerror("Only Circular curves, Linestrings and Compound curves are supported as rings, not %s (%d)", lwgeom_typename(result->rings[i]->type), result->rings[i]->type);
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lwfree(result);
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lwfree(insp);
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return NULL;
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}
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if (TYPE_NDIMS(result->rings[i]->type) != TYPE_NDIMS(result->type))
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{
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lwerror("Mixed dimensions (curvepoly %d, ring %d)",
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TYPE_NDIMS(result->type), i,
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TYPE_NDIMS(result->rings[i]->type));
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lwfree(result);
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lwfree(insp);
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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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LWGEOM *
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lwcurvepoly_add(const LWCURVEPOLY *to, uint32 where, const LWGEOM *what)
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{
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/* TODO */
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lwerror("lwcurvepoly_add not yet implemented.");
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return NULL;
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}
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