| 244 |
|
|
| 245 |
|
if (!initialized_) initialize(); |
| 246 |
|
|
| 247 |
< |
RealType ros; |
| 248 |
< |
RealType rcos; |
| 249 |
< |
RealType myPot = 0.0; |
| 250 |
< |
RealType myPotC = 0.0; |
| 251 |
< |
RealType myDeriv = 0.0; |
| 252 |
< |
RealType myDerivC = 0.0; |
| 253 |
< |
|
| 254 |
< |
std::pair<AtomType*, AtomType*> key = std::make_pair(idat.atype1, |
| 255 |
< |
idat.atype2); |
| 256 |
< |
LJInteractionData mixer = MixingMap[key]; |
| 257 |
< |
|
| 258 |
< |
RealType sigmai = mixer.sigmai; |
| 259 |
< |
RealType epsilon = mixer.epsilon; |
| 247 |
> |
pair<AtomType*, AtomType*> key = make_pair(idat.atype1, idat.atype2); |
| 248 |
> |
map<pair<AtomType*, AtomType*>, LJInteractionData>::iterator it; |
| 249 |
> |
it = MixingMap.find(key); |
| 250 |
|
|
| 251 |
< |
|
| 252 |
< |
ros = idat.rij * sigmai; |
| 253 |
< |
|
| 254 |
< |
getLJfunc(ros, myPot, myDeriv); |
| 251 |
> |
if (it != MixingMap.end()) { |
| 252 |
> |
|
| 253 |
> |
LJInteractionData mixer = (*it).second; |
| 254 |
> |
|
| 255 |
> |
RealType sigmai = mixer.sigmai; |
| 256 |
> |
RealType epsilon = mixer.epsilon; |
| 257 |
> |
|
| 258 |
> |
RealType ros; |
| 259 |
> |
RealType rcos; |
| 260 |
> |
RealType myPot = 0.0; |
| 261 |
> |
RealType myPotC = 0.0; |
| 262 |
> |
RealType myDeriv = 0.0; |
| 263 |
> |
RealType myDerivC = 0.0; |
| 264 |
> |
|
| 265 |
> |
ros = idat.rij * sigmai; |
| 266 |
> |
|
| 267 |
> |
getLJfunc(ros, myPot, myDeriv); |
| 268 |
> |
|
| 269 |
> |
if (shiftedPot_) { |
| 270 |
> |
rcos = idat.rcut * sigmai; |
| 271 |
> |
getLJfunc(rcos, myPotC, myDerivC); |
| 272 |
> |
myDerivC = 0.0; |
| 273 |
> |
} else if (LJ::shiftedFrc_) { |
| 274 |
> |
rcos = idat.rcut * sigmai; |
| 275 |
> |
getLJfunc(rcos, myPotC, myDerivC); |
| 276 |
> |
myPotC = myPotC + myDerivC * (idat.rij - idat.rcut) * sigmai; |
| 277 |
> |
} else { |
| 278 |
> |
myPotC = 0.0; |
| 279 |
> |
myDerivC = 0.0; |
| 280 |
> |
} |
| 281 |
|
|
| 282 |
< |
if (shiftedPot_) { |
| 283 |
< |
rcos = idat.rcut * sigmai; |
| 284 |
< |
getLJfunc(rcos, myPotC, myDerivC); |
| 285 |
< |
myDerivC = 0.0; |
| 286 |
< |
} else if (LJ::shiftedFrc_) { |
| 287 |
< |
rcos = idat.rcut * sigmai; |
| 288 |
< |
getLJfunc(rcos, myPotC, myDerivC); |
| 289 |
< |
myPotC = myPotC + myDerivC * (idat.rij - idat.rcut) * sigmai; |
| 290 |
< |
} else { |
| 275 |
< |
myPotC = 0.0; |
| 276 |
< |
myDerivC = 0.0; |
| 282 |
> |
RealType pot_temp = idat.vdwMult * epsilon * (myPot - myPotC); |
| 283 |
> |
idat.vpair += pot_temp; |
| 284 |
> |
|
| 285 |
> |
RealType dudr = idat.sw * idat.vdwMult * epsilon * (myDeriv - |
| 286 |
> |
myDerivC)*sigmai; |
| 287 |
> |
|
| 288 |
> |
idat.pot += idat.sw * pot_temp; |
| 289 |
> |
idat.f1 = idat.d * dudr / idat.rij; |
| 290 |
> |
|
| 291 |
|
} |
| 278 |
– |
|
| 279 |
– |
RealType pot_temp = idat.vdwMult * epsilon * (myPot - myPotC); |
| 280 |
– |
idat.vpair += pot_temp; |
| 281 |
– |
|
| 282 |
– |
RealType dudr = idat.sw * idat.vdwMult * epsilon * (myDeriv - |
| 283 |
– |
myDerivC)*sigmai; |
| 284 |
– |
|
| 285 |
– |
idat.pot += idat.sw * pot_temp; |
| 286 |
– |
idat.f1 = idat.d * dudr / idat.rij; |
| 287 |
– |
|
| 292 |
|
return; |
| 289 |
– |
|
| 293 |
|
} |
| 294 |
|
|
| 295 |
|
void LJ::getLJfunc(RealType r, RealType &pot, RealType &deriv) { |
| 307 |
|
return; |
| 308 |
|
} |
| 309 |
|
|
| 310 |
+ |
RealType LJ::getSuggestedCutoffRadius(AtomType* at1, AtomType* at2) { |
| 311 |
+ |
if (!initialized_) initialize(); |
| 312 |
+ |
pair<AtomType*, AtomType*> key = make_pair(at1, at2); |
| 313 |
+ |
map<pair<AtomType*, AtomType*>, LJInteractionData>::iterator it; |
| 314 |
+ |
it = MixingMap.find(key); |
| 315 |
+ |
if (it == MixingMap.end()) |
| 316 |
+ |
return 0.0; |
| 317 |
+ |
else { |
| 318 |
+ |
LJInteractionData mixer = (*it).second; |
| 319 |
+ |
return 2.5 * mixer.sigma; |
| 320 |
+ |
} |
| 321 |
+ |
} |
| 322 |
|
|
| 323 |
|
} |
