lwgeom_rtree.h

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 * PostGIS - Spatial Types for PostgreSQL
 * http://postgis.net
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#ifndef _LWGEOM_RTREE_H
#define _LWGEOM_RTREE_H 1
 
#include "liblwgeom.h"
#include "lwgeom_cache.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
{
        GeomCache             gcache;
        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 */