/**
* Selects an optimum edge for elimination in structures without N2 nodes.
*
* <p>This might be severely broken! Would have helped if there was an explanation of how this
* algorithm worked.
*
* @param ring
* @param molecule
*/
private IBond checkEdges(IRing ring, IAtomContainer molecule) {
IRing r1, r2;
IRingSet ringSet = ring.getBuilder().newInstance(IRingSet.class);
IBond bond;
int minMaxSize = Integer.MAX_VALUE;
int minMax = 0;
logger.debug("Molecule: " + molecule);
Iterator<IBond> bonds = ring.bonds().iterator();
while (bonds.hasNext()) {
bond = (IBond) bonds.next();
molecule.removeElectronContainer(bond);
r1 = getRing(bond.getAtom(0), molecule);
r2 = getRing(bond.getAtom(1), molecule);
logger.debug("checkEdges: " + bond);
if (r1.getAtomCount() > r2.getAtomCount()) {
ringSet.addAtomContainer(r1);
} else {
ringSet.addAtomContainer(r2);
}
molecule.addBond(bond);
}
for (int i = 0; i < ringSet.getAtomContainerCount(); i++) {
if (((IRing) ringSet.getAtomContainer(i)).getBondCount() < minMaxSize) {
minMaxSize = ((IRing) ringSet.getAtomContainer(i)).getBondCount();
minMax = i;
}
}
return (IBond) ring.getElectronContainer(minMax);
}
/**
* Performs a breadthFirstSearch in an AtomContainer starting with a particular sphere, which
* usually consists of one start atom, and searches for a pi system.
*
* @param container The AtomContainer to be searched
* @param sphere A sphere of atoms to start the search with
* @param path A ArrayList which stores the atoms belonging to the pi system
* @throws org.openscience.cdk.exception.CDKException Description of the Exception
*/
private void breadthFirstSearch(IAtomContainer container, List<IAtom> sphere, List<IAtom> path)
throws CDKException {
IAtom atom;
IAtom nextAtom;
List<IAtom> newSphere = new ArrayList<IAtom>();
// logger.debug("Start of breadthFirstSearch");
for (int i = 0; i < sphere.size(); i++) {
atom = sphere.get(i);
// logger.debug("BreadthFirstSearch around atom " + (atomNr + 1));
List<IBond> bonds = container.getConnectedBondsList(atom);
for (IBond bond : bonds) {
nextAtom = bond.getConnectedAtom(atom);
if ((!nextAtom.getFlag(CDKConstants.ISAROMATIC) && !nextAtom.getFlag(CDKConstants.ISINRING))
& !nextAtom.getFlag(CDKConstants.VISITED)) {
// logger.debug("BDS> AtomNr:"+container.getAtomNumber(nextAtom)+"
// maxBondOrder:"+container.getMaximumBondOrder(nextAtom)+"
// Aromatic:"+nextAtom.getFlag(CDKConstants.ISAROMATIC)+"
// FormalCharge:"+nextAtom.getFormalCharge()+" Charge:"+nextAtom.getCharge()+"
// Flag:"+nextAtom.getFlag(CDKConstants.VISITED));
path.add(nextAtom);
// logger.debug("BreadthFirstSearch is meeting new atom " + (nextAtomNr + 1));
nextAtom.setFlag(CDKConstants.VISITED, true);
if (container.getConnectedBondsCount(nextAtom) > 1) {
newSphere.add(nextAtom);
}
} else {
nextAtom.setFlag(CDKConstants.VISITED, true);
}
}
}
if (newSphere.size() > 0) {
breadthFirstSearch(container, newSphere, path);
}
}
/**
* Sets the array of bonds of this AtomContainer.
*
* @param bonds The array of bonds to be assigned to this AtomContainer
* @see #getBond
*/
public void setBonds(IBond[] bonds) {
this.bonds = bonds;
for (IBond bond : bonds) {
bond.addListener(this);
}
this.bondCount = bonds.length;
}
private static Map<SgroupBracket, IBond> bracketBondPairs(
Collection<SgroupBracket> brackets, Collection<IBond> bonds) {
Map<SgroupBracket, IBond> pairs = new HashMap<>();
for (SgroupBracket bracket : brackets) {
IBond crossingBond = null;
for (IBond bond : bonds) {
IAtom a1 = bond.getAtom(0);
IAtom a2 = bond.getAtom(1);
if (Line2D.linesIntersect(
bracket.getFirstPoint().x, bracket.getFirstPoint().y,
bracket.getSecondPoint().x, bracket.getSecondPoint().y,
a1.getPoint2d().x, a1.getPoint2d().y,
a2.getPoint2d().x, a2.getPoint2d().y)) {
// more than one... not good
if (crossingBond != null) return new HashMap<>();
crossingBond = bond;
}
}
if (crossingBond == null) return new HashMap<>();
pairs.put(bracket, crossingBond);
}
return pairs;
}
/** Converts a Bond to a MSML Bond element */
protected BondType convertBond(IBond bond, String parentID, ArrayList<String> hashes) {
BondType bondElement = new BondType();
String bondID = parentID + PREFIX_BOND + bond.hashCode();
bondElement.setId(bondID);
int atom1 = hashes.indexOf(Integer.toString(bond.getAtom(0).hashCode())) + 1;
int atom2 = hashes.indexOf(Integer.toString(bond.getAtom(1).hashCode())) + 1;
// bondElement.setCustomId("" + bond.getID());
// atom name
// bondElement.setTitle(bond.getID());
/*
* System.out.println(bond.getAtom(0).getSymbol()); System.out.println(bond.getAtom(1).getSymbol());
*/
String a1 = "a" + atom1;
String a2 = "a" + atom2;
List<String> atomrefs = bondElement.getAtomRefs2();
atomrefs.add(a1); // add first atom in bond
atomrefs.add(a2); // add second atom in bond
if (bond.getOrder() != null) {
bondElement.setOrder(bond.getOrder().toString());
}
/*
* if (bond.getStereo() != null){ bondElement.setStereo(bond.getStereo().toString()); //no stereo property as of
* now }
*/
return bondElement;
}
/**
* Hide the atoms and bonds of a contracted abbreviation. If the abbreviations is attached we
* remap the attachment symbol to display the name. If there are no attachments the symbol we be
* added later ({@see #generateSgroups}).
*
* @param container molecule
* @param sgroup abbreviation group display shortcut
*/
private static void contractAbbreviation(
IAtomContainer container, Map<IAtom, String> symbolRemap, Sgroup sgroup) {
final Set<IBond> crossing = sgroup.getBonds();
final Set<IAtom> atoms = sgroup.getAtoms();
// only do 0,1 attachments for now
if (crossing.size() > 1) return;
for (IAtom atom : atoms) {
StandardGenerator.hide(atom);
}
for (IBond bond : container.bonds()) {
if (atoms.contains(bond.getAtom(0)) || atoms.contains(bond.getAtom(1)))
StandardGenerator.hide(bond);
}
for (IBond bond : crossing) {
StandardGenerator.unhide(bond);
IAtom a1 = bond.getAtom(0);
IAtom a2 = bond.getAtom(1);
StandardGenerator.unhide(a1);
if (atoms.contains(a1)) symbolRemap.put(a1, sgroup.getSubscript());
StandardGenerator.unhide(a2);
if (atoms.contains(a2)) symbolRemap.put(a2, sgroup.getSubscript());
}
}
/**
* Place ring with user provided angles.
*
* @param ring the ring to place.
* @param ringCenter center coordinates of the ring.
* @param bondLength given bond length.
* @param startAngles a map with start angles when drawing the ring.
*/
public void placeRing(
IRing ring, Point2d ringCenter, double bondLength, Map<Integer, Double> startAngles) {
double radius = this.getNativeRingRadius(ring, bondLength);
double addAngle = 2 * Math.PI / ring.getRingSize();
IAtom startAtom = ring.getFirstAtom();
Point2d p = new Point2d(ringCenter.x + radius, ringCenter.y);
startAtom.setPoint2d(p);
double startAngle = Math.PI * 0.5;
/* Different ring sizes get different start angles to have
* visually correct placement */
int ringSize = ring.getRingSize();
if (startAngles.get(ringSize) != null) startAngle = startAngles.get(ringSize);
List<IBond> bonds = ring.getConnectedBondsList(startAtom);
/*
* Store all atoms to draw in consecutive order relative to the
* chosen bond.
*/
Vector<IAtom> atomsToDraw = new Vector<IAtom>();
IAtom currentAtom = startAtom;
IBond currentBond = (IBond) bonds.get(0);
for (int i = 0; i < ring.getBondCount(); i++) {
currentBond = ring.getNextBond(currentBond, currentAtom);
currentAtom = currentBond.getConnectedAtom(currentAtom);
atomsToDraw.addElement(currentAtom);
}
atomPlacer.populatePolygonCorners(atomsToDraw, ringCenter, startAngle, addAngle, radius);
}
/**
* Fill the {@literal coordinates} and {@literal elevation} from the given offset index. If there
* is only one connection then the second entry (from the offset) will use the coordinates of
* <i>a</i>. The permutation parity is also built and returned.
*
* @param container atom container
* @param a the central atom
* @param connected bonds connected to the central atom
* @param coordinates the coordinates array to fill
* @param elevations the elevations of the connected atoms
* @param offset current location in the offset array
* @return the permutation parity
*/
private static PermutationParity fill2DCoordinates(
IAtomContainer container,
IAtom a,
List<IBond> connected,
Point2d[] coordinates,
int[] elevations,
int offset) {
int i = 0;
coordinates[offset + 1] = a.getPoint2d();
elevations[offset + 1] = 0;
int[] indices = new int[2];
for (IBond bond : connected) {
if (!isDoubleBond(bond)) {
IAtom other = bond.getConnectedAtom(a);
coordinates[i + offset] = other.getPoint2d();
elevations[i + offset] = elevation(bond, a);
indices[i] = container.getAtomNumber(other);
i++;
}
}
if (i == 1) {
return PermutationParity.IDENTITY;
} else {
return new BasicPermutationParity(indices);
}
}
/**
* Procedure required by the CDOInterface. This function is only supposed to be called by the JCFL
* library
*/
public void endObject(String objectType) {
logger.debug("END: " + objectType);
if (objectType.equals("Molecule")) {
eventReader.fireFrameRead();
clearData();
} else if (objectType.equals("Atom")) {
currentMolecule.addAtom(currentAtom);
} else if (objectType.equals("Bond")) {
logger.debug("Bond(" + bond_id + "): " + bond_a1 + ", " + bond_a2 + ", " + bond_order);
if (bond_a1 > currentMolecule.getAtomCount() || bond_a2 > currentMolecule.getAtomCount()) {
logger.error(
"Cannot add bond between at least one non-existant atom: "
+ bond_a1
+ " and "
+ bond_a2);
} else {
IAtom a1 = currentMolecule.getAtom(bond_a1);
IAtom a2 = currentMolecule.getAtom(bond_a2);
IBond b = builder.newBond(a1, a2, bond_order);
if (bond_id != null) b.setID(bond_id);
if (bond_stereo != -99) {
b.setStereo(bond_stereo);
}
currentMolecule.addBond(b);
}
}
}
/**
* Check if all atoms in the bond list have 3D coordinates. There is some redundant checking but
* the list will typically be short.
*
* @param bonds the bonds to check
* @return whether all atoms have 2D coordinates
*/
private static boolean has3DCoordinates(List<IBond> bonds) {
for (IBond bond : bonds) {
if (bond.getAtom(0).getPoint3d() == null || bond.getAtom(1).getPoint3d() == null)
return false;
}
return true;
}
/**
* Initiate process. It is needed to call the addExplicitHydrogensToSatisfyValency from the class
* tools.HydrogenAdder.
*
* @param reactants reactants of the reaction
* @param agents agents of the reaction (Must be in this case null)
* @exception CDKException Description of the Exception
*/
@TestMethod("testInitiate_IMoleculeSet_IMoleculeSet")
public IReactionSet initiate(IMoleculeSet reactants, IMoleculeSet agents) throws CDKException {
logger.debug("initiate reaction: HeterolyticCleavagePBReaction");
if (reactants.getMoleculeCount() != 1) {
throw new CDKException("HeterolyticCleavagePBReaction only expects one reactant");
}
if (agents != null) {
throw new CDKException("HeterolyticCleavagePBReaction don't expects agents");
}
IReactionSet setOfReactions =
DefaultChemObjectBuilder.getInstance().newInstance(IReactionSet.class);
IMolecule reactant = reactants.getMolecule(0);
/* if the parameter hasActiveCenter is not fixed yet, set the active centers*/
IParameterReact ipr = super.getParameterClass(SetReactionCenter.class);
if (ipr != null && !ipr.isSetParameter()) setActiveCenters(reactant);
Iterator<IBond> bondis = reactant.bonds().iterator();
while (bondis.hasNext()) {
IBond bondi = bondis.next();
IAtom atom1 = bondi.getAtom(0);
IAtom atom2 = bondi.getAtom(1);
if (bondi.getFlag(CDKConstants.REACTIVE_CENTER)
&& bondi.getOrder() != IBond.Order.SINGLE
&& atom1.getFlag(CDKConstants.REACTIVE_CENTER)
&& atom2.getFlag(CDKConstants.REACTIVE_CENTER)
&& (atom1.getFormalCharge() == CDKConstants.UNSET ? 0 : atom1.getFormalCharge()) == 0
&& (atom2.getFormalCharge() == CDKConstants.UNSET ? 0 : atom2.getFormalCharge()) == 0
&& reactant.getConnectedSingleElectronsCount(atom1) == 0
&& reactant.getConnectedSingleElectronsCount(atom2) == 0) {
/**/
for (int j = 0; j < 2; j++) {
ArrayList<IAtom> atomList = new ArrayList<IAtom>();
if (j == 0) {
atomList.add(atom1);
atomList.add(atom2);
} else {
atomList.add(atom2);
atomList.add(atom1);
}
ArrayList<IBond> bondList = new ArrayList<IBond>();
bondList.add(bondi);
IMoleculeSet moleculeSet = reactant.getBuilder().newInstance(IMoleculeSet.class);
moleculeSet.addMolecule(reactant);
IReaction reaction = mechanism.initiate(moleculeSet, atomList, bondList);
if (reaction == null) continue;
else setOfReactions.addReaction(reaction);
}
}
}
return setOfReactions;
}
@Test
public void testAnyOrder() {
AnyOrderQueryBond matcher = new AnyOrderQueryBond(mock(IChemObjectBuilder.class));
IBond testBond = new Bond();
for (IBond.Order order : IBond.Order.values()) {
testBond.setOrder(order);
Assert.assertTrue(matcher.matches(testBond));
}
}
@Override
public int seed(IAtomContainer molecule, IAtom atom, BitSet mask) {
double sum = 0;
for (IBond bond : molecule.getConnectedBondsList(atom)) {
if (mask.get(molecule.getAtomNumber(bond.getConnectedAtom(atom))))
sum += order(bond.getOrder());
}
return ((Double) sum).hashCode();
}
private int getAttachedMultipleBondCount(IAtom atom, IAtomContainer atomContainer) {
int count = 0;
for (IBond bond : atomContainer.getConnectedBondsList(atom)) {
if (bond.getOrder() == IBond.Order.SINGLE) {
continue;
}
++count;
}
return count;
}
/**
* Eliminates one bond of this atom from the molecule
*
* @param atom The atom one bond is eliminated of
* @param molecule The molecule that contains the atom
*/
private void breakBond(IAtom atom, IAtomContainer molecule) {
Iterator<IBond> bonds = molecule.bonds().iterator();
while (bonds.hasNext()) {
IBond bond = (IBond) bonds.next();
if (bond.contains(atom)) {
molecule.removeElectronContainer(bond);
break;
}
}
}
/**
* Removes the bond at the given position from the AtomContainer.
*
* @param position The position of the bond to be removed.
*/
public IBond removeBond(int position) {
IBond bond = bonds[position];
bond.removeListener(this);
for (int i = position; i < bondCount - 1; i++) {
bonds[i] = bonds[i + 1];
}
bonds[bondCount - 1] = null;
bondCount--;
notifyChanged();
return bond;
}
@Test
public void testBondStereo() throws Exception {
String cmlString =
"<molecule id='m1'><atomArray><atom id='a1'/><atom id='a2'/></atomArray><bondArray><bond id='b1' atomRefs2='a1 a2'><bondStereo dictRef='cml:H'/></bond></bondArray></molecule>";
IChemFile chemFile = parseCMLString(cmlString);
IMolecule mol = checkForSingleMoleculeFile(chemFile);
Assert.assertEquals(2, mol.getAtomCount());
Assert.assertEquals(1, mol.getBondCount());
IBond bond = mol.getBond(0);
Assert.assertEquals(IBond.Stereo.DOWN, bond.getStereo());
}
private double medianBondLength(Collection<IBond> bonds) {
if (bonds.isEmpty()) return 1.5;
int nBonds = 0;
double[] lengths = new double[bonds.size()];
for (IBond bond : bonds) {
Point2d p1 = bond.getAtom(0).getPoint2d();
Point2d p2 = bond.getAtom(1).getPoint2d();
// watch out for overlaid atoms (occur in multiple group Sgroups)
if (!p1.equals(p2)) lengths[nBonds++] = p1.distance(p2);
}
Arrays.sort(lengths, 0, nBonds);
return lengths[nBonds / 2];
}
@Test
public void testBondAromatic2() throws Exception {
String cmlString =
"<molecule id='m1'><atomArray atomID='a1 a2'/><bondArray><bond atomRefs='a1 a2' order='2'><bondType dictRef='cdk:aromaticBond'/></bond></bondArray></molecule>";
IChemFile chemFile = parseCMLString(cmlString);
IMolecule mol = checkForSingleMoleculeFile(chemFile);
Assert.assertEquals(2, mol.getAtomCount());
Assert.assertEquals(1, mol.getBondCount());
org.openscience.cdk.interfaces.IBond bond = mol.getBond(0);
Assert.assertEquals(CDKConstants.BONDORDER_DOUBLE, bond.getOrder());
Assert.assertTrue(bond.getFlag(CDKConstants.ISAROMATIC));
}
@SuppressWarnings("unchecked")
@Test
public void aromaticBond() throws Exception {
IAtom u = mock(IAtom.class);
IAtom v = mock(IAtom.class);
IBond b = new Bond(u, v);
b.setFlag(CDKConstants.ISAROMATIC, true);
Map<IAtom, Integer> mock = mock(Map.class);
when(mock.get(u)).thenReturn(0);
when(mock.get(v)).thenReturn(1);
CDKToBeam c2g = new CDKToBeam();
assertThat(c2g.toBeamEdge(b, mock), is(uk.ac.ebi.beam.Bond.AROMATIC.edge(0, 1)));
}
@Test
public void testBondId() throws Exception {
String cmlString =
"<molecule id='m1'><atomArray><atom id='a1'/><atom id='a2'/></atomArray><bondArray><bond id='b1' atomRefs2='a1 a2'/></bondArray></molecule>";
IChemFile chemFile = parseCMLString(cmlString);
IMolecule mol = checkForSingleMoleculeFile(chemFile);
Assert.assertEquals(2, mol.getAtomCount());
Assert.assertEquals(1, mol.getBondCount());
org.openscience.cdk.interfaces.IBond bond = mol.getBond(0);
Assert.assertEquals("b1", bond.getID());
}
private void processBondsBlock(int lineCount, IAtomContainer container) throws IOException {
for (int i = 0; i < lineCount; i++) {
String line = input.readLine();
int atom1 = Integer.parseInt(line.substring(10, 13).trim()) - 1;
int atom2 = Integer.parseInt(line.substring(16, 19).trim()) - 1;
if (container.getBond(container.getAtom(atom1), container.getAtom(atom2)) == null) {
IBond bond =
container.getBuilder().newBond(container.getAtom(atom1), container.getAtom(atom2));
int order = Integer.parseInt(line.substring(23).trim());
bond.setOrder(BondManipulator.createBondOrder((double) order));
container.addBond(bond);
} // else: bond already present; CTX store the bonds twice
}
}
/**
* Internal - makes a map of the highlights for reaction mapping.
*
* @param reactants reaction reactants
* @param products reaction products
* @return the highlight map
*/
private Map<IChemObject, Color> makeHighlightAtomMap(
List<IAtomContainer> reactants, List<IAtomContainer> products) {
Map<IChemObject, Color> colorMap = new HashMap<>();
Map<Integer, Color> mapToColor = new HashMap<>();
int colorIdx = -1;
for (IAtomContainer mol : reactants) {
int prevPalletIdx = colorIdx;
for (IAtom atom : mol.atoms()) {
int mapidx = accessAtomMap(atom);
if (mapidx > 0) {
if (prevPalletIdx == colorIdx) {
colorIdx++; // select next color
if (colorIdx >= atomMapColors.length)
throw new IllegalArgumentException(
"Not enough colors to highlight atom mapping, please provide mode");
}
Color color = atomMapColors[colorIdx];
colorMap.put(atom, color);
mapToColor.put(mapidx, color);
}
}
if (colorIdx > prevPalletIdx) {
for (IBond bond : mol.bonds()) {
IAtom a1 = bond.getAtom(0);
IAtom a2 = bond.getAtom(1);
Color c1 = colorMap.get(a1);
Color c2 = colorMap.get(a2);
if (c1 != null && c1 == c2) colorMap.put(bond, c1);
}
}
}
for (IAtomContainer mol : products) {
for (IAtom atom : mol.atoms()) {
int mapidx = accessAtomMap(atom);
if (mapidx > 0) {
colorMap.put(atom, mapToColor.get(mapidx));
}
}
for (IBond bond : mol.bonds()) {
IAtom a1 = bond.getAtom(0);
IAtom a2 = bond.getAtom(1);
Color c1 = colorMap.get(a1);
Color c2 = colorMap.get(a2);
if (c1 != null && c1 == c2) colorMap.put(bond, c1);
}
}
return colorMap;
}
/**
* Generated coordinates for a given ring, which is connected to a spiro ring. The rings share
* exactly one atom.
*
* @param ring The ring to be placed
* @param sharedAtoms The atoms of this ring, also members of another ring, which are already
* placed
* @param sharedAtomsCenter The geometric center of these atoms
* @param ringCenterVector A vector pointing the the center of the new ring
* @param bondLength The standard bondlength
*/
public void placeSpiroRing(
IRing ring,
IAtomContainer sharedAtoms,
Point2d sharedAtomsCenter,
Vector2d ringCenterVector,
double bondLength) {
logger.debug("placeSpiroRing");
double radius = getNativeRingRadius(ring, bondLength);
Point2d ringCenter = new Point2d(sharedAtomsCenter);
ringCenterVector.normalize();
ringCenterVector.scale(radius);
ringCenter.add(ringCenterVector);
double addAngle = 2 * Math.PI / ring.getRingSize();
IAtom startAtom = sharedAtoms.getAtom(0);
// double centerX = ringCenter.x;
// double centerY = ringCenter.y;
// int direction = 1;
IAtom currentAtom = startAtom;
double startAngle =
GeometryTools.getAngle(
startAtom.getPoint2d().x - ringCenter.x, startAtom.getPoint2d().y - ringCenter.y);
/*
* Get one bond connected to the spiro bridge atom.
* It doesn't matter in which direction we draw.
*/
java.util.List bonds = ring.getConnectedBondsList(startAtom);
IBond currentBond = (IBond) bonds.get(0);
Vector atomsToDraw = new Vector();
/*
* Store all atoms to draw in consequtive order relative to the
* chosen bond.
*/
for (int i = 0; i < ring.getBondCount(); i++) {
currentBond = ring.getNextBond(currentBond, currentAtom);
currentAtom = currentBond.getConnectedAtom(currentAtom);
atomsToDraw.addElement(currentAtom);
}
logger.debug("currentAtom " + currentAtom);
logger.debug("startAtom " + startAtom);
atomPlacer.populatePolygonCorners(atomsToDraw, ringCenter, startAngle, addAngle, radius);
}
private boolean getIfACarbonIsDoubleBondedToAnOxygen(Molecule mol, IAtom carbonAtom) {
boolean isDoubleBondedToOxygen = false;
List<IAtom> neighToCarbon = mol.getConnectedAtomsList(carbonAtom);
IBond tmpBond;
int counter = 0;
for (int nei = 0; nei < neighToCarbon.size(); nei++) {
IAtom neighbour = neighToCarbon.get(nei);
if (neighbour.getSymbol().equals("O")) {
tmpBond = mol.getBond(neighbour, carbonAtom);
if (tmpBond.getOrder() == IBond.Order.DOUBLE) counter += 1;
}
}
if (counter > 0) isDoubleBondedToOxygen = true;
return isDoubleBondedToOxygen;
}
private boolean getIfBondIsNotRotatable(Molecule mol, IBond bond, IAtomContainer detected) {
boolean isBondNotRotatable = false;
int counter = 0;
IAtom atom0 = bond.getAtom(0);
IAtom atom1 = bond.getAtom(1);
if (detected != null) {
if (detected.contains(bond)) counter += 1;
}
if (atom0.getFlag(CDKConstants.ISINRING)) {
if (atom1.getFlag(CDKConstants.ISINRING)) {
counter += 1;
} else {
if (atom1.getSymbol().equals("H")) counter += 1;
else counter += 0;
}
}
if (atom0.getSymbol().equals("N") && atom1.getSymbol().equals("C")) {
if (getIfACarbonIsDoubleBondedToAnOxygen(mol, atom1)) counter += 1;
}
if (atom0.getSymbol().equals("C") && atom1.getSymbol().equals("N")) {
if (getIfACarbonIsDoubleBondedToAnOxygen(mol, atom0)) counter += 1;
}
if (counter > 0) isBondNotRotatable = true;
return isBondNotRotatable;
}
// given a double bond
// this method returns a bond bonded to this double bond
private int getNearestBondtoAGivenAtom(Molecule mol, IAtom atom, IBond bond) {
int nearestBond = 0;
double[] values;
double distance = 0;
IAtom atom0 = bond.getAtom(0);
List<IBond> bondsAtLeft = mol.getConnectedBondsList(atom0);
int partial;
for (int i = 0; i < bondsAtLeft.size(); i++) {
IBond curBond = bondsAtLeft.get(i);
values = calculateDistanceBetweenAtomAndBond(atom, curBond);
partial = mol.getBondNumber(curBond);
if (i == 0) {
nearestBond = mol.getBondNumber(curBond);
distance = values[0];
} else {
if (values[0] < distance) {
nearestBond = partial;
}
/* XXX commented this out, because is has no effect
*
else {
nearestBond = nearestBond;
}*/
}
}
return nearestBond;
}
/**
* Helper method, used to help construct a configuration.
*
* @param bond
* @param container
* @return the array position of the bond in the container
*/
private int getBondPosition(IBond bond, IAtomContainer container) {
for (int i = 0; i < container.getBondCount(); i++) {
if (bond.equals(container.getBond(i))) {
return i;
}
}
return -1;
}
/**
* set the active center for this molecule. The active center will be those which correspond with
* A-B. If the bond is simple, it will be broken forming two fragments
*
* <pre>
* A: Atom
* #/=/-: bond
* B: Atom
* </pre>
*
* @param reactant The molecule to set the activity
* @throws CDKException
*/
private void setActiveCenters(IMolecule reactant) throws CDKException {
Iterator<IBond> bonds = reactant.bonds().iterator();
while (bonds.hasNext()) {
IBond bond = bonds.next();
IAtom atom1 = bond.getAtom(0);
IAtom atom2 = bond.getAtom(1);
if (bond.getOrder() != IBond.Order.SINGLE
&& (atom1.getFormalCharge() == CDKConstants.UNSET ? 0 : atom1.getFormalCharge()) == 0
&& (atom2.getFormalCharge() == CDKConstants.UNSET ? 0 : atom2.getFormalCharge()) == 0
&& reactant.getConnectedSingleElectronsCount(atom1) == 0
&& reactant.getConnectedSingleElectronsCount(atom2) == 0) {
atom1.setFlag(CDKConstants.REACTIVE_CENTER, true);
atom2.setFlag(CDKConstants.REACTIVE_CENTER, true);
bond.setFlag(CDKConstants.REACTIVE_CENTER, true);
}
}
}
private synchronized IQuery build(IAtomContainer queryMolecule) {
VFQueryBuilder result = new VFQueryBuilder();
for (IAtom atom : queryMolecule.atoms()) {
AtomMatcher matcher = createAtomMatcher(queryMolecule, atom);
if (matcher != null) {
result.addNode(matcher, atom);
}
}
for (int i = 0; i < queryMolecule.getBondCount(); i++) {
IBond bond = queryMolecule.getBond(i);
IAtom atomI = bond.getAtom(0);
IAtom atomJ = bond.getAtom(1);
result.connect(
result.getNode(atomI), result.getNode(atomJ), createBondMatcher(queryMolecule, bond));
}
return result;
}
