helper to display torsion angle values.
 
constructor:
 
   Dihedral(as0,as1,as2,as3)
 
      as[0-3] are atom.Atom objects, or strings or <atomSel>.AtomSels
   containing single atoms
 
methods:
 
   value(): 
 
      return the value of the dihedral angle (in radians)
 
   derivs(): 
 
      return the value of the gradient of the dihedral angle for the four 
    atoms. The return value is a tuple:
 
      (dPhidAtom0,dPhidAtom1,dPhidAtom2,dPhidAtom3)
 
   atom0(), atom1(), atom2(), atom3():
 
      return the requested atom.
 
The dihedral angle is the angle about atoms a2 and a3 below:
 
                              a3
                             /
                        a1-a2
                       /
                     a0
 
 
 
# This file was created automatically by SWIG.
# Don't modify this file, modify the SWIG interface instead.
# This file is compatible with both classic and new-style classes.

Classes
		__builtin__.object Dihedral DihedralPtr   class Dihedral(__builtin__.object)           Methods defined here: __del__(self, destroy=<built-in function delete_Dihedral>)   __getattr__ lambda self, name   __init__(self, *args)   __repr__(self)   __setattr__ lambda self, name, value   atom0(*args)   atom1(*args)   atom2(*args)   atom3(*args)   derivs(*args)   help(*args)   value(*args)   Data and other attributes defined here: __dict__ = <dictproxy object at 0x2523050>   dictionary for instance variables (if defined) __swig_getmethods__ = {} __swig_setmethods__ = {} __weakref__ = <attribute '__weakref__' of 'Dihedral' objects>   list of weak references to the object (if defined)   class DihedralPtr(Dihedral)           Method resolution order: DihedralPtr Dihedral __builtin__.object Methods defined here: __init__(self, this)   Methods inherited from Dihedral: __del__(self, destroy=<built-in function delete_Dihedral>)   __getattr__ lambda self, name   __repr__(self)   __setattr__ lambda self, name, value   atom0(*args)   atom1(*args)   atom2(*args)   atom3(*args)   derivs(*args)   help(*args)   value(*args)   Data and other attributes inherited from Dihedral: __dict__ = <dictproxy object at 0x2500fa0>   dictionary for instance variables (if defined) __swig_getmethods__ = {} __swig_setmethods__ = {} __weakref__ = <attribute '__weakref__' of 'Dihedral' objects>   list of weak references to the object (if defined)

Functions
		help(...)

Data
		__package__ = None pyXplorHelp = Type help() for interactive help, or help(object) for help about object.