union_if_available()

static void union_if_available ( UNIONFIND *  uf, uint32_t  p, uint32_t  q, char *  is_in_core, char *  in_a_cluster  )

static

Definition at line 295 of file lwgeom_geos_cluster.c.

{
        if (in_a_cluster[q])
        {
                /* Can we merge p's cluster with q's cluster?  We can do this only
                 * if both p and q are considered _core_ points of their respective
                 * clusters.
                 */
                 if (is_in_core[q])
                 {
                         UF_union(uf, p, q);
                 }
        }
        else
        {
                UF_union(uf, p, q);
                in_a_cluster[q] = LW_TRUE;
        }
}

References LW_TRUE, and UF_union().

Referenced by union_dbscan_general().

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