calc_geo_selectivity default_tpoint_selectivity nd_box_above nd_box_back nd_box_below nd_box_contains nd_box_from_stbox nd_box_front nd_box_left nd_box_overabove nd_box_overback nd_box_overbelow nd_box_overfront nd_box_overleft nd_box_overright nd_box_ratio_above nd_box_ratio_back nd_box_ratio_below nd_box_ratio_front nd_box_ratio_left nd_box_ratio_overabove nd_box_ratio_overback nd_box_ratio_overbelow nd_box_ratio_overfront nd_box_ratio_overleft nd_box_ratio_overright nd_box_ratio_position nd_box_ratio_right nd_box_right nd_stats_value_index tpoint_cachedop tpoint_const_to_stbox tpoint_joinsel tpoint_sel

nd_box_below() bool nd_box_below ( const ND_BOX *  a, const ND_BOX *  b  ) Returns true if a is strictly below of b, false otherwise.