Usage:
cofr [ view | models | front | independent | fixed ]

Usage:
cofr [ atom-spec | x,y,z [ coordinateSystem N ]]

Usage:
~cofr

If no arguments are supplied, cofr reports the coordinates of the current center of rotation in the laboratory frame of reference. These values are also reported in the Rotation tool. The center can be shown with “+” crosshairs in the graphics window with the command set showCofR.

The keyword options specify center of rotation method:

• view - continually adjusting to the current center of view
• models - the center of models method: center of the bounding sphere of the displayed parts of active models
• front - the front center method (also specified with ~cofr): when the view is zoomed out, behaves like center of models; when the view is zoomed in on parts of objects, behaves like center of view, except the center of rotation depth (Z-coordinate) is set to that of the frontmost displayed unclipped atom whose VDW sphere intercepts a line perpendicular to the screen in the window center. The center is not updated when only rotations are performed.
• independent - each model rotating about its own center rather than a single collective center; can also be specified with the command set independent
• fixed - at a fixed point relative to the model(s) (changes only the method, retains the current center)

The center of rotation can also be controlled with the Rotation tool.

See also: center, focus, move cofr, set independent, Mouse preferences, 3D manipulation, movie-related commands, Set Pivot and Focus in the Actions menu