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root/OpenMD/branches/development/src/primitives/DirectionalAtom.cpp
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Comparing trunk/src/primitives/DirectionalAtom.cpp (file contents):
Revision 663 by gezelter, Wed Oct 12 21:00:59 2005 UTC vs.
Revision 1211 by gezelter, Wed Jan 23 16:38:22 2008 UTC

# Line 42 | Line 42 | namespace oopse {
42   #include "primitives/DirectionalAtom.hpp"
43   #include "utils/simError.h"
44   namespace oopse {
45 <
45 >  
46    DirectionalAtom::DirectionalAtom(DirectionalAtomType* dAtomType)
47      : Atom(dAtomType){
48 <      objType_= otDAtom;
49 <      if (dAtomType->isMultipole()) {
50 <        electroBodyFrame_ = dAtomType->getElectroBodyFrame();
48 >    objType_= otDAtom;
49 >    if (dAtomType->isMultipole()) {
50 >      electroBodyFrame_ = dAtomType->getElectroBodyFrame();
51 >    }
52 >    
53 >    // Check if one of the diagonal inertia tensor of this directional
54 >    // atom is zero:
55 >    int nLinearAxis = 0;
56 >    Mat3x3d inertiaTensor = getI();
57 >    for (int i = 0; i < 3; i++) {    
58 >      if (fabs(inertiaTensor(i, i)) < oopse::epsilon) {
59 >        linear_ = true;
60 >        linearAxis_ = i;
61 >        ++ nLinearAxis;
62        }
52
53      //check if one of the diagonal inertia tensor of this directional atom  is zero
54      int nLinearAxis = 0;
55      Mat3x3d inertiaTensor = getI();
56      for (int i = 0; i < 3; i++) {    
57        if (fabs(inertiaTensor(i, i)) < oopse::epsilon) {
58          linear_ = true;
59          linearAxis_ = i;
60          ++ nLinearAxis;
61        }
62      }
63
64      if (nLinearAxis > 1) {
65        sprintf( painCave.errMsg,
66                 "Directional Atom warning.\n"
67                 "\tOOPSE found more than one axis in this directional atom with a vanishing \n"
68                 "\tmoment of inertia.");
69        painCave.isFatal = 0;
70        simError();
71      }
72      
63      }
64  
65 +    if (nLinearAxis > 1) {
66 +      sprintf( painCave.errMsg,
67 +               "Directional Atom warning.\n"
68 +               "\tOOPSE found more than one axis in this directional atom with a vanishing \n"
69 +               "\tmoment of inertia.");
70 +      painCave.isFatal = 0;
71 +      simError();
72 +    }    
73 +  }
74 +  
75    Mat3x3d DirectionalAtom::getI() {
76      return static_cast<DirectionalAtomType*>(getAtomType())->getI();
77    }    
78 <
78 >  
79    void DirectionalAtom::setPrevA(const RotMat3x3d& a) {
80      ((snapshotMan_->getPrevSnapshot())->*storage_).aMat[localIndex_] = a;
81      if (atomType_->isMultipole()) {
82        ((snapshotMan_->getPrevSnapshot())->*storage_).electroFrame[localIndex_] = a.transpose() * electroBodyFrame_;
83      }
84    }
85 <
86 <      
85 >  
86 >  
87    void DirectionalAtom::setA(const RotMat3x3d& a) {
88      ((snapshotMan_->getCurrentSnapshot())->*storage_).aMat[localIndex_] = a;
89 <
89 >    
90      if (atomType_->isMultipole()) {
91        ((snapshotMan_->getCurrentSnapshot())->*storage_).electroFrame[localIndex_] = a.transpose() * electroBodyFrame_;
92      }
93    }    
94 <    
94 >  
95    void DirectionalAtom::setA(const RotMat3x3d& a, int snapshotNo) {
96      ((snapshotMan_->getSnapshot(snapshotNo))->*storage_).aMat[localIndex_] = a;
97 <
97 >    
98      if (atomType_->isMultipole()) {
99        ((snapshotMan_->getSnapshot(snapshotNo))->*storage_).electroFrame[localIndex_] = a.transpose() * electroBodyFrame_;    
100      }
101    }    
102 <
102 >  
103    void DirectionalAtom::rotateBy(const RotMat3x3d& m) {
104      setA(m *getA());
105    }
106 <
107 <  std::vector<double> DirectionalAtom::getGrad() {
108 <    std::vector<double> grad(6, 0.0);
106 >  
107 >  std::vector<RealType> DirectionalAtom::getGrad() {
108 >    std::vector<RealType> grad(6, 0.0);
109      Vector3d force;
110      Vector3d torque;
111      Vector3d myEuler;
112 <    double phi, theta, psi;
113 <    double cphi, sphi, ctheta, stheta;
112 >    RealType phi, theta, psi;
113 >    RealType cphi, sphi, ctheta, stheta;
114      Vector3d ephi;
115      Vector3d etheta;
116      Vector3d epsi;
117 <
117 >    
118      force = getFrc();
119      torque =getTrq();
120      myEuler = getA().toEulerAngles();
121 <
121 >    
122      phi = myEuler[0];
123      theta = myEuler[1];
124      psi = myEuler[2];
125 <
125 >    
126      cphi = cos(phi);
127      sphi = sin(phi);
128      ctheta = cos(theta);
129      stheta = sin(theta);
130 <
130 >    
131      // get unit vectors along the phi, theta and psi rotation axes
132 <
132 >    
133      ephi[0] = 0.0;
134      ephi[1] = 0.0;
135      ephi[2] = 1.0;
136 <
136 >    
137      etheta[0] = cphi;
138      etheta[1] = sphi;
139      etheta[2] = 0.0;
140 <
140 >    
141      epsi[0] = stheta * cphi;
142      epsi[1] = stheta * sphi;
143      epsi[2] = ctheta;
144 <
144 >    
145      //gradient is equal to -force
146      for (int j = 0 ; j<3; j++)
147        grad[j] = -force[j];
148 <
149 <    for (int j = 0; j < 3; j++ ) {
150 <
148 >    
149 >    for (int j = 0; j < 3; j++ ) {      
150        grad[3] -= torque[j]*ephi[j];
151        grad[4] -= torque[j]*etheta[j];
152 <      grad[5] -= torque[j]*epsi[j];
154 <
152 >      grad[5] -= torque[j]*epsi[j];      
153      }
154      
155      return grad;
156    }    
157 <
157 >  
158    void DirectionalAtom::accept(BaseVisitor* v) {
159      v->visit(this);
160 <  }    
163 <
160 >  }
161   }
162  

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