Surface carve selection

Overview

surface_carve_selection sets the selection for surface_carve_cutoff from which the cutoff hides the triangles in the surface representation.

# set the center point of the surface carving
set surface_carve_selection, selectionName

# set the selection
set surface_carve_selection, lig
 
# set the cutoff; hide surface >4.5 Ang from lig
set surface_carve_cutoff, 4.5