CircTreeBuilder()

static int CircTreeBuilder ( const LWGEOM *  lwgeom, GeomCache *  cache  )

static

Builder, freeer and public accessor for cached CIRC_NODE trees.

Definition at line 51 of file geography_measurement_trees.c.

References circ_tree_free(), CircTreeGeomCache::index, LW_FAILURE, LW_SUCCESS, and lwgeom_calculate_circ_tree().

{
        CircTreeGeomCache* circ_cache = (CircTreeGeomCache*)cache;
        CIRC_NODE* tree = lwgeom_calculate_circ_tree(lwgeom);

        if ( circ_cache->index )
        {
                circ_tree_free(circ_cache->index);
                circ_cache->index = 0;
        }
        if ( ! tree )
                return LW_FAILURE;

        circ_cache->index = tree;
        return LW_SUCCESS;
}

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