question: public void reset ( ) { Iterator iter = m_vis . visibleItems ( m_nodeGroup ) ; while ( iter . hasNext ( ) ) { VisualItem item = ( VisualItem ) iter . next ( ) ; ForceItem fitem = ( ForceItem ) item . get ( FORCEITEM ) ; if ( fitem != null ) { fitem . location [ 0 ] = ( float ) item . getEndX ( ) ; fitem . location [ 1 ] = ( float ) item . getEndY ( ) ; fitem . force [ 0 ] = fitem . force [ 1 ] = 0 ; fitem . velocity [ 0 ] = fitem . velocity [ 1 ] = 0 ; } } m_lasttime = - 1L ; }
target:  Reset the force simulation state for all nodes processed by this layout.