center translates the window, the clipping slab, and the origin to a point centered within the atom selection.
cmd.center( string selection, int state = 0, int origin = 1 )
- state = 0 (default) use all coordinate states
- state = -1 use only coordinates for the current state
- state > 0 use coordinates for a specific state
- origin = 1 (default) move the origin
- origin = 0 leave the origin unchanged