lwgeom_rtree.h

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 * 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
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#ifndef _LWGEOM_RTREE_H
#define _LWGEOM_RTREE_H 1

#include "liblwgeom.h"

typedef struct
{
        double min;
        double max;
}
RTREE_INTERVAL;

typedef struct rtree_node
{
        RTREE_INTERVAL *interval;
        struct rtree_node *leftNode;
        struct rtree_node *rightNode;
        LWLINE *segment;
}
RTREE_NODE;

typedef struct
{
        RTREE_NODE **ringIndices;
        int* ringCounts;
        int polyCount;
}
RTREE_POLY_CACHE;



typedef struct {
        int                         type;       // <GeomCache>
        GSERIALIZED*                geom1;      //
        GSERIALIZED*                geom2;      //
        size_t                      geom1_size; //
        size_t                      geom2_size; //
        int32                       argnum;     // </GeomCache>
        RTREE_POLY_CACHE*           index;
} RTreeGeomCache;


LWMLINE *RTreeFindLineSegments(RTREE_NODE *root, double value);


RTREE_POLY_CACHE *GetRtreeCache(FunctionCallInfo fcinfo, GSERIALIZED *g1);

#endif /* !defined _LWGEOM_RTREE_H */