gidx_overlaps()

bool gidx_overlaps	(	GIDX *	a,
		GIDX *	b
	)

Definition at line 393 of file gserialized_gist_nd.c.

{
        int i, dims_a, dims_b;
 
        POSTGIS_DEBUG(5, "entered function");
 
        if (!a || !b)
                return false;
 
        if (gidx_is_unknown(a) || gidx_is_unknown(b))
                return false;
 
        dims_a = GIDX_NDIMS(a);
        dims_b = GIDX_NDIMS(b);
 
        /* For all shared dimensions min(a) > max(b) and min(b) > max(a)
           Unshared dimensions do not matter */
        for (i = 0; i < Min(dims_a, dims_b); i++)
        {
                /* If the missing dimension was not padded with -+FLT_MAX */
                if (GIDX_GET_MAX(a, i) != FLT_MAX && GIDX_GET_MAX(b, i) != FLT_MAX)
                {
                        if (GIDX_GET_MIN(a, i) > GIDX_GET_MAX(b, i))
                                return false;
                        if (GIDX_GET_MIN(b, i) > GIDX_GET_MAX(a, i))
                                return false;
                }
        }
 
        return true;
}

References gidx_is_unknown().

Referenced by gserialized_gidx_geog_overlaps(), gserialized_gidx_geom_overlaps(), gserialized_gidx_gidx_overlaps(), gserialized_gist_consistent_internal(), gserialized_gist_consistent_leaf(), gserialized_overlaps(), and gserialized_spgist_leaf_consistent_nd().

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