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root/OpenMD/branches/development/src/brains/ForceManager.cpp
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Comparing branches/development/src/brains/ForceManager.cpp (file contents):
Revision 1613 by gezelter, Thu Aug 18 20:18:19 2011 UTC vs.
Revision 1616 by gezelter, Tue Aug 30 15:45:35 2011 UTC

# Line 115 | Line 115 | namespace OpenMD {
115      else
116        mdFileVersion = 0;
117    
118
118      if (simParams_->haveCutoffRadius()) {
119        rCut_ = simParams_->getCutoffRadius();
120      } else {      
# Line 173 | Line 172 | namespace OpenMD {
172          cutoffMethod_ = i->second;
173        }
174      } else {
175 <      sprintf(painCave.errMsg,
176 <              "ForceManager::setupCutoffs: No value was set for the cutoffMethod.\n"
177 <              "\tOpenMD will use SHIFTED_FORCE.\n");
178 <      painCave.isFatal = 0;
179 <      painCave.severity = OPENMD_INFO;
180 <      simError();
181 <      cutoffMethod_ = SHIFTED_FORCE;        
175 >      if (mdFileVersion > 1) {
176 >        sprintf(painCave.errMsg,
177 >                "ForceManager::setupCutoffs: No value was set for the cutoffMethod.\n"
178 >                "\tOpenMD will use SHIFTED_FORCE.\n");
179 >        painCave.isFatal = 0;
180 >        painCave.severity = OPENMD_INFO;
181 >        simError();
182 >        cutoffMethod_ = SHIFTED_FORCE;        
183 >      } else {
184 >        // handle the case where the old file version was in play
185 >        // (there should be no cutoffMethod, so we have to deduce it
186 >        // from other data).        
187 >
188 >        sprintf(painCave.errMsg,
189 >                "ForceManager::setupCutoffs : DEPRECATED FILE FORMAT!\n"
190 >                "\tOpenMD found a file which does not set a cutoffMethod.\n"
191 >                "\tOpenMD will attempt to deduce a cutoffMethod using the\n"
192 >                "\tbehavior of the older (version 1) code.  To remove this\n"
193 >                "\twarning, add an explicit cutoffMethod and change the top\n"
194 >                "\tof the file so that it begins with <OpenMD version=2>\n");
195 >        painCave.isFatal = 0;
196 >        painCave.severity = OPENMD_WARNING;
197 >        simError();            
198 >                
199 >        // The old file version tethered the shifting behavior to the
200 >        // electrostaticSummationMethod keyword.
201 >        
202 >        if (simParams_->haveElectrostaticSummationMethod()) {
203 >          std::string myMethod = simParams_->getElectrostaticSummationMethod();
204 >          toUpper(myMethod);
205 >        
206 >          if (myMethod == "SHIFTED_POTENTIAL") {
207 >            cutoffMethod_ = SHIFTED_POTENTIAL;
208 >          } else if (myMethod == "SHIFTED_FORCE") {
209 >            cutoffMethod_ = SHIFTED_FORCE;
210 >          }
211 >        
212 >          if (simParams_->haveSwitchingRadius())
213 >            rSwitch_ = simParams_->getSwitchingRadius();
214 >
215 >          if (myMethod == "SHIFTED_POTENTIAL" || myMethod == "SHIFTED_FORCE") {
216 >            if (simParams_->haveSwitchingRadius()){
217 >              sprintf(painCave.errMsg,
218 >                      "ForceManager::setupCutoffs : DEPRECATED ERROR MESSAGE\n"
219 >                      "\tA value was set for the switchingRadius\n"
220 >                      "\teven though the electrostaticSummationMethod was\n"
221 >                      "\tset to %s\n", myMethod.c_str());
222 >              painCave.severity = OPENMD_WARNING;
223 >              painCave.isFatal = 1;
224 >              simError();            
225 >            }
226 >          }
227 >          if (abs(rCut_ - rSwitch_) < 0.0001) {
228 >            if (cutoffMethod_ == SHIFTED_FORCE) {              
229 >              sprintf(painCave.errMsg,
230 >                      "ForceManager::setupCutoffs : DEPRECATED BEHAVIOR\n"
231 >                      "\tcutoffRadius and switchingRadius are set to the\n"
232 >                      "\tsame value.  OpenMD will use shifted force\n"
233 >                      "\tpotentials instead of switching functions.\n");
234 >              painCave.isFatal = 0;
235 >              painCave.severity = OPENMD_WARNING;
236 >              simError();            
237 >            } else {
238 >              cutoffMethod_ = SHIFTED_POTENTIAL;
239 >              sprintf(painCave.errMsg,
240 >                      "ForceManager::setupCutoffs : DEPRECATED BEHAVIOR\n"
241 >                      "\tcutoffRadius and switchingRadius are set to the\n"
242 >                      "\tsame value.  OpenMD will use shifted potentials\n"
243 >                      "\tinstead of switching functions.\n");
244 >              painCave.isFatal = 0;
245 >              painCave.severity = OPENMD_WARNING;
246 >              simError();            
247 >            }
248 >          }
249 >        }
250 >      }
251      }
252  
253      map<string, CutoffPolicy> stringToCutoffPolicy;
# Line 298 | Line 366 | namespace OpenMD {
366      switcher_->setSwitch(rSwitch_, rCut_);
367      interactionMan_->setSwitchingRadius(rSwitch_);
368    }
369 +
370 +
371 +
372    
373    void ForceManager::initialize() {
374  
# Line 614 | Line 685 | namespace OpenMD {
685            
686            in_switching_region = switcher_->getSwitch(rgrpsq, sw, dswdr,
687                                                       rgrp);
688 <              
688 >          
689            atomListRow = fDecomp_->getAtomsInGroupRow(cg1);
690            atomListColumn = fDecomp_->getAtomsInGroupColumn(cg2);
620                      
691  
692            for (vector<int>::iterator ia = atomListRow.begin();
693                 ia != atomListRow.end(); ++ia) {            
# Line 657 | Line 727 | namespace OpenMD {
727                  } else {
728                    interactionMan_->doPair(idat);
729                    fDecomp_->unpackInteractionData(idat, atom1, atom2);
660
730                    vij += vpair;
731                    fij += f1;
732                    tau -= outProduct( *(idat.d), f1);
# Line 684 | Line 753 | namespace OpenMD {
753                  // presence in switching region
754                  fg = swderiv * d_grp * mf;
755                  fDecomp_->addForceToAtomRow(atom1, fg);
687
756                  if (atomListRow.size() > 1) {
757                    if (info_->usesAtomicVirial()) {
758                      // find the distance between the atom

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