geom2d_brin_inclusion_merge()

Datum geom2d_brin_inclusion_merge

(

PG_FUNCTION_ARGS

)

Definition at line 96 of file brin_2d.c.

{
        BOX2DF *box_key = (BOX2DF *) PG_GETARG_POINTER(0);
        BOX2DF *box_geom = (BOX2DF *) PG_GETARG_POINTER(1);
 
        /*
         * Check if the stored bounding box already contains the geometry's one.
         *
         * If not, enlarge the stored box2df to make it contains the current
         * geometry.
         */
        if (!box2df_contains(box_key, box_geom))
        {
            box_key->xmin = Min(box_key->xmin, box_geom->xmin);
            box_key->xmax = Max(box_key->xmax, box_geom->xmax);
            box_key->ymin = Min(box_key->ymin, box_geom->ymin);
            box_key->ymax = Max(box_key->ymax, box_geom->ymax);
        }
 
        PG_RETURN_POINTER(box_key);
}

References box2df_contains().

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