OEGetPhi

double OEGetPhi(const OEHierResidue &res)
double OEGetPhi(const OEChem::OEAtomBase *atom,
                unsigned assume=OEAssumption::Default)

Returns the \(\phi\) (phi) angle in radians for a residue specified by its OEHierResidue class or by an OEAtomBase from the residue.