question: private void reduce_trace_shapes_at_tie_pins ( Collection < BrdItem > p_item_list , int p_own_net_no , AwtreeShapeSearch p_autoroute_tree ) { for ( BrdItem curr_item : p_item_list ) { if ( ! ( curr_item instanceof BrdAbitPin ) ) continue ; BrdAbitPin curr_tie_pin = ( BrdAbitPin ) curr_item ; if ( curr_tie_pin . net_count ( ) <= 1 ) continue ; Collection < BrdItem > pin_contacts = curr_item . get_normal_contacts ( ) ; for ( BrdItem curr_contact : pin_contacts ) { if ( ! ( curr_contact instanceof BrdTracep ) ) continue ; if ( curr_contact . contains_net ( p_own_net_no ) ) continue ; p_autoroute_tree . reduce_trace_shape_at_tie_pin ( curr_tie_pin , ( BrdTracep ) curr_contact ) ; } } }
target:  Looks for pins with more than 1 nets and reduces shapes of traces of foreign nets, which are already connected to such a pin, so that the pin center is not blocked for connection.