Changes in src/analysis_bonds.cpp [fe238c:220cf37]
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src/analysis_bonds.cpp
rfe238c r220cf37 9 9 #include "atom.hpp" 10 10 #include "bond.hpp" 11 #include "element.hpp"12 #include "info.hpp"13 11 #include "log.hpp" 14 12 #include "molecule.hpp" … … 39 37 } 40 38 if (((int)Mean % 2) != 0) 41 DoeLog(1) && (eLog()<< Verbose(1) << "Something is wrong with the bond structure, the number of bonds is not even!" << endl);39 eLog() << Verbose(1) << "Something is wrong with the bond structure, the number of bonds is not even!" << endl; 42 40 Mean /= (double)AtomCount; 43 41 }; … … 81 79 } 82 80 }; 83 84 /** Calculate the angle between \a *first and \a *origin and \a *second and \a *origin.85 * \param *first first Vector86 * \param *origin origin of angle taking87 * \param *second second Vector88 * \return angle between \a *first and \a *second, both relative to origin at \a *origin.89 */90 double CalculateAngle(Vector *first, Vector *central, Vector *second)91 {92 Vector OHBond;93 Vector OOBond;94 95 OHBond.CopyVector(first);96 OHBond.SubtractVector(central);97 OOBond.CopyVector(second);98 OOBond.SubtractVector(central);99 const double angle = OHBond.Angle(&OOBond);100 return angle;101 };102 103 /** Checks whether the angle between \a *Oxygen and \a *Hydrogen and \a *Oxygen and \a *OtherOxygen is less than 30 degrees.104 * Note that distance criterion is not checked.105 * \param *Oxygen first oxygen atom, bonded to \a *Hydrogen106 * \param *Hydrogen hydrogen bonded to \a *Oxygen107 * \param *OtherOxygen other oxygen atom108 * \return true - angle criteria fulfilled, false - criteria not fulfilled, angle greater than 30 degrees.109 */110 bool CheckHydrogenBridgeBondAngle(atom *Oxygen, atom *Hydrogen, atom *OtherOxygen)111 {112 Info FunctionInfo(__func__);113 114 // check angle115 if (CalculateAngle(&Hydrogen->x, &Oxygen->x, &OtherOxygen->x) < M_PI*(30./180.)) {116 return true;117 } else {118 return false;119 }120 };121 122 /** Counts the number of hydrogen bridge bonds.123 * With \a *InterfaceElement an extra element can be specified that identifies some boundary.124 * Then, counting is for the h-bridges that connect to interface only.125 * \param *molecules molecules to count bonds126 * \param *InterfaceElement or NULL127 */128 int CountHydrogenBridgeBonds(MoleculeListClass *molecules, element * InterfaceElement = NULL)129 {130 atom *Walker = NULL;131 atom *Runner = NULL;132 int count = 0;133 int OtherHydrogens = 0;134 double Otherangle = 0.;135 bool InterfaceFlag = false;136 bool OtherHydrogenFlag = true;137 for (MoleculeList::const_iterator MolWalker = molecules->ListOfMolecules.begin();MolWalker != molecules->ListOfMolecules.end(); MolWalker++) {138 Walker = (*MolWalker)->start;139 while (Walker->next != (*MolWalker)->end) {140 Walker = Walker->next;141 for (MoleculeList::const_iterator MolRunner = molecules->ListOfMolecules.begin();MolRunner != molecules->ListOfMolecules.end(); MolRunner++) {142 Runner = (*MolRunner)->start;143 while (Runner->next != (*MolRunner)->end) {144 Runner = Runner->next;145 if ((Walker->type->Z == 8) && (Runner->type->Z == 8)) {146 // check distance147 const double distance = Runner->x.DistanceSquared(&Walker->x);148 if ((distance > MYEPSILON) && (distance < HBRIDGEDISTANCE*HBRIDGEDISTANCE)) { // distance >0 means different atoms149 // on other atom(Runner) we check for bond to interface element and150 // check that O-O line is not in between the shanks of the two connected hydrogens (Otherangle > 104.5)151 OtherHydrogenFlag = true;152 Otherangle = 0.;153 OtherHydrogens = 0;154 InterfaceFlag = (InterfaceElement == NULL);155 for (BondList::const_iterator BondRunner = Runner->ListOfBonds.begin(); BondRunner != Runner->ListOfBonds.end(); BondRunner++) {156 atom * const OtherAtom = (*BondRunner)->GetOtherAtom(Runner);157 // if hydrogen, check angle to be greater(!) than 30 degrees158 if (OtherAtom->type->Z == 1) {159 const double angle = CalculateAngle(&OtherAtom->x, &Runner->x, &Walker->x);160 OtherHydrogenFlag = OtherHydrogenFlag && (angle > M_PI*(30./180.) + MYEPSILON);161 Otherangle += angle;162 OtherHydrogens++;163 }164 InterfaceFlag = InterfaceFlag || (OtherAtom->type == InterfaceElement);165 }166 DoLog(1) && (Log() << Verbose(1) << "Otherangle is " << Otherangle << " for " << OtherHydrogens << " hydrogens." << endl);167 switch (OtherHydrogens) {168 case 0:169 case 1:170 break;171 case 2:172 OtherHydrogenFlag = OtherHydrogenFlag && (Otherangle > M_PI*(104.5/180.) + MYEPSILON);173 break;174 default: // 3 or more hydrogens ...175 OtherHydrogenFlag = false;176 break;177 }178 if (InterfaceFlag && OtherHydrogenFlag) {179 // on this element (Walker) we check for bond to hydrogen, i.e. part of water molecule180 for (BondList::const_iterator BondRunner = Walker->ListOfBonds.begin(); BondRunner != Walker->ListOfBonds.end(); BondRunner++) {181 atom * const OtherAtom = (*BondRunner)->GetOtherAtom(Walker);182 if (OtherAtom->type->Z == 1) {183 // check angle184 if (CheckHydrogenBridgeBondAngle(Walker, OtherAtom, Runner)) {185 DoLog(1) && (Log() << Verbose(1) << Walker->Name << ", " << OtherAtom->Name << " and " << Runner->Name << " has a hydrogen bridge bond with distance " << sqrt(distance) << " and angle " << CalculateAngle(&OtherAtom->x, &Walker->x, &Runner->x)*(180./M_PI) << "." << endl);186 count++;187 break;188 }189 }190 }191 }192 }193 }194 }195 }196 }197 }198 return count;199 }200 201 /** Counts the number of bonds between two given elements.202 * \param *molecules list of molecules with all atoms203 * \param *first pointer to first element204 * \param *second pointer to second element205 * \return number of found bonds (\a *first-\a *second)206 */207 int CountBondsOfTwo(MoleculeListClass * const molecules, const element * const first, const element * const second)208 {209 atom *Walker = NULL;210 int count = 0;211 212 for (MoleculeList::const_iterator MolWalker = molecules->ListOfMolecules.begin();MolWalker != molecules->ListOfMolecules.end(); MolWalker++) {213 Walker = (*MolWalker)->start;214 while (Walker->next != (*MolWalker)->end) {215 Walker = Walker->next;216 if ((Walker->type == first) || (Walker->type == second)) { // first element matches217 for (BondList::const_iterator BondRunner = Walker->ListOfBonds.begin(); BondRunner != Walker->ListOfBonds.end(); BondRunner++) {218 atom * const OtherAtom = (*BondRunner)->GetOtherAtom(Walker);219 if (((OtherAtom->type == first) || (OtherAtom->type == second)) && (Walker->nr < OtherAtom->nr)) {220 count++;221 DoLog(1) && (Log() << Verbose(1) << first->name << "-" << second->name << " bond found between " << *Walker << " and " << *OtherAtom << "." << endl);222 }223 }224 }225 }226 }227 return count;228 };229 230 /** Counts the number of bonds between three given elements.231 * Note that we do not look for arbitrary sequence of given bonds, but \a *second will be the central atom and we check232 * whether it has bonds to both \a *first and \a *third.233 * \param *molecules list of molecules with all atoms234 * \param *first pointer to first element235 * \param *second pointer to second element236 * \param *third pointer to third element237 * \return number of found bonds (\a *first-\a *second-\a *third, \a *third-\a *second-\a *first, respectively)238 */239 int CountBondsOfThree(MoleculeListClass * const molecules, const element * const first, const element * const second, const element * const third)240 {241 int count = 0;242 bool MatchFlag[2];243 bool result = false;244 atom *Walker = NULL;245 const element * ElementArray[2];246 ElementArray[0] = first;247 ElementArray[1] = third;248 249 for (MoleculeList::const_iterator MolWalker = molecules->ListOfMolecules.begin();MolWalker != molecules->ListOfMolecules.end(); MolWalker++) {250 Walker = (*MolWalker)->start;251 while (Walker->next != (*MolWalker)->end) {252 Walker = Walker->next;253 if (Walker->type == second) { // first element matches254 for (int i=0;i<2;i++)255 MatchFlag[i] = false;256 for (BondList::const_iterator BondRunner = Walker->ListOfBonds.begin(); BondRunner != Walker->ListOfBonds.end(); BondRunner++) {257 atom * const OtherAtom = (*BondRunner)->GetOtherAtom(Walker);258 for (int i=0;i<2;i++)259 if ((!MatchFlag[i]) && (OtherAtom->type == ElementArray[i])) {260 MatchFlag[i] = true;261 break; // each bonding atom can match at most one element we are looking for262 }263 }264 result = true;265 for (int i=0;i<2;i++) // gather results266 result = result && MatchFlag[i];267 if (result) { // check results268 count++;269 DoLog(1) && (Log() << Verbose(1) << first->name << "-" << second->name << "-" << third->name << " bond found at " << *Walker << "." << endl);270 }271 }272 }273 }274 return count;275 };
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