VMD User's Guide

Chapter 11Molecular Analysis11.1 Using the molinfo commandThis section covers how to extract information about molecules and atoms using the VMD textcommand molinfo.Examples:Two functions, one to save the current view position, the other to restore it. The position ofthe axis is not changed by these operations.proc save_viewpoint {} {global viewpointsif [info exists viewpoints] {unset viewpoints}# get the current matriciesforeach mol [molinfo list] {set viewpoints($mol) [molinfo $mol get {center_matrix rotate_matrix scale_matrix global_matrix}]}}proc restore_viewpoint {} {global viewpointsforeach mol [molinfo list] {puts "Trying $mol"if [info exists viewpoints($mol)] {molinfo $mol set {center_matrix rotate_matrix scale_matrixglobal_matrix} $viewpoints($mol)}}}Cycle through the list of displayed molecules, turning each one on one at a time. At the end,return the display flags to their original state.# save the current display stateforeach mol [molinfo list] {set disp($mol) [molinfo $mol get drawn]155