/usr/include/BALL/STRUCTURE/kekulizer.h is in libball1.4-dev 1.4.1+20111206-3.
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// vi: set ts=2:
//
#ifndef BALL_STRUCTURE_KEKULIZER_H
#define BALL_STRUCTURE_KEKULIZER_H
#ifndef BALL_COMMON_H
# include <BALL/common.h>
#endif
#ifndef BALL_DATATYPE_HASHMAP_H
# include <BALL/DATATYPE/hashMap.h>
#endif
#include <set>
namespace BALL
{
class Atom;
class Molecule;
class Bond;
/** Class to transform bonds with type "aromatic" to
conjugated single and double bonds.
<br>
Useage:<br>
\code
Kekulizer k;
k.setAromaticRings(...);
k.setRings(...);
k.setup(Molecule& m);
k.clear();
\endcode
\ingroup StructureMiscellaneous
*/
class BALL_EXPORT Kekuliser
{
///
struct BALL_EXPORT AtomInfo
{
// needed for sorting:
bool operator < (const AtomInfo& info) const;
AtomInfo& operator = (const AtomInfo& ai) ;
// THE atom
Atom* atom;
// bond to be set to a double bond
Bond* double_bond;
// aromatic bonds
std::vector<Bond*> abonds;
// position of the partner atoms in the vector of AtomInfos
std::vector<Position> partner_id;
// current number of double bonds for this atom
Index curr_double;
// minumum possible number of double bonds for this atom
Index min_double;
// maximum possible number of double bonds for this atom
Index max_double;
// number of double bonds for this atom to be uncharged
Index uncharged_double;
};
public:
BALL_CREATE(Kekuliser)
///
Kekuliser();
///
virtual ~Kekuliser() {}
///
bool setup(Molecule& ac);
///
void setAromaticRings(const std::vector<std::set<Atom*> >& rings) { aromatic_rings_ = rings;}
///
void setRings(const std::vector<std::set<Atom*> >& rings) { rings_ = rings;}
///
const std::vector<Bond*>& getUnassignedBonds() const { return unassigned_bonds_; }
///
void clear();
///
void dump();
///
void setUseFormalCharges(bool state) { use_formal_charges_ = state;}
///
bool useFormalCharges() const { return use_formal_charges_;}
protected:
bool fixAromaticRings_();
void fixAromaticSystem_(Position it);
virtual Size getPenalty_(Atom& atom, Index charge);
void getMaximumValence_();
// merge aromatic rings:
void calculateAromaticSystems_();
void collectSystems_(Atom& atom);
void collectAromaticAtoms_();
bool hasAromaticBonds_(Atom& atom);
void applySolution_(Position pos);
Position calculateDistanceScores_();
bool use_formal_charges_;
std::vector<std::set<Atom*> > aromatic_systems_;
std::vector<std::set<Atom*> > aromatic_rings_;
std::vector<std::set<Atom*> > rings_;
std::vector<Bond*> unassigned_bonds_;
// atoms that take part in an aromatic bond:
std::set<const Atom*> aromatic_atoms_;
std::set<const Atom*> all_aromatic_atoms_;
HashMap<Atom*, Index> max_valence_;
std::set<Atom*> current_aromatic_system_;
// current aromatic system:
std::vector<AtomInfo> atom_infos_;
Molecule* molecule_;
Size lowest_penalty_;
Size current_penalty_;
std::vector<std::vector<AtomInfo> > solutions_;
};
} // namespace BALL
#endif // BALL_STRUCTURE_KEKULIZER_H
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