This API is currently available in C++ and Python.
double OEMMFFCalcVdw(const OEChem::OEMolBase &mol, const OEChem::OEAtomBase *patom, const OEChem::OEAtomBase *latom, bool coloumb=false, bool attract=false)
This free function calculates the VdW/Coulomb interaction energy between a pair of atoms passed to the function as the second and third arguments, belonging to a molecule mol. Coulomb term is added to the result only when the fourth argument to the function is set true. A regular (not modified) MMFF VdW potential is used when the value of the last argument is set to true.