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. The molecule must have 3D coordinates assigned.