public static int[][] getMcsAsAtomIndexMapping(IAtomContainer mol1, IAtomContainer mol2)
throws CDKException {
Isomorphism mcs = new Isomorphism(org.openscience.cdk.smsd.interfaces.Algorithm.DEFAULT, true);
mcs.init(mol1, mol2, true, true);
mcs.setChemFilters(true, true, true);
int mcsSize = mcs.getFirstMapping().size();
int[][] mapping = new int[mcsSize][2];
int i = 0;
for (Map.Entry map : mcs.getFirstMapping().entrySet()) {
mapping[i][0] = (Integer) map.getKey();
mapping[i][1] = (Integer) map.getValue();
i++;
}
return mapping;
}
public static IAtomContainer getMcsAsNewContainer(IAtomContainer mol1, IAtomContainer mol2)
throws CDKException, CloneNotSupportedException {
Isomorphism mcs = new Isomorphism(org.openscience.cdk.smsd.interfaces.Algorithm.DEFAULT, true);
mcs.init(mol1, mol2, true, true);
mcs.setChemFilters(true, true, true);
mol1 = mcs.getReactantMolecule();
mol2 = mcs.getProductMolecule();
IAtomContainer mcsmolecule =
DefaultChemObjectBuilder.getInstance().newInstance(IAtomContainer.class, mol1);
List<IAtom> atomsToBeRemoved = new ArrayList<IAtom>();
for (IAtom atom : mcsmolecule.atoms()) {
int index = mcsmolecule.getAtomNumber(atom);
if (!mcs.getFirstMapping().containsKey(index)) {
atomsToBeRemoved.add(atom);
}
}
for (IAtom atom : atomsToBeRemoved) {
mcsmolecule.removeAtomAndConnectedElectronContainers(atom);
}
return mcsmolecule;
}