SweepParameter.cpp

/*
* PSCF - Polymer Self-Consistent Field
*
* Copyright 2015 - 2025, The Regents of the University of Minnesota
* Distributed under the terms of the GNU General Public License.
*/
 
#include <r1d/sweep/SweepParameter.h>
#include <r1d/solvers/Block.h>
#include <r1d/solvers/Mixture.h>
#include <r1d/solvers/Polymer.h>
#include <r1d/System.h>
#include <pscf/inter/Interaction.h>
#include <pscf/sweep/ParameterModifier.h>
#include <util/containers/FSArray.h>
#include <util/global.h>
 
#include <algorithm>
#include <iomanip>
 
namespace Pscf {
namespace R1d {
 
   using namespace Util;
 
   /*
   * Default constructor.
   */
   SweepParameter::SweepParameter()
    : type_(SweepParameter::Null),
      nId_(0),
      id_(),
      initial_(0.0),
      change_(0.0),
      systemPtr_(0),
      parameterTypesPtr_(0),
      parameterTypeId_(-1)
   {}
 
   /*
   * Constructor, creates association with system.
   */
   SweepParameter::SweepParameter(System& system)
    : type_(SweepParameter::Null),
      nId_(0),
      id_(),
      initial_(0.0),
      change_(0.0),
      systemPtr_(&system),
      parameterTypesPtr_(0),
      parameterTypeId_(-1)
   {}
 
   /*
   * Read type, set nId and allocate id_ array.
   */
   void SweepParameter::readParamType(std::istream& in)
   {
      std::string buffer;
      in >> buffer;
      std::transform(buffer.begin(), buffer.end(), 
                     buffer.begin(), ::tolower);
 
      if (buffer == "block" || buffer == "block_length") {
         type_ = Block;
         nId_ = 2; // polymer and block identifiers
      } else if (buffer == "chi") {
         type_ = Chi;
         nId_ = 2; // two monomer type identifiers
      } else if (buffer == "kuhn") {
         type_ = Kuhn;
         nId_ = 1; // monomer type identifier
      } else if (buffer == "phi_polymer") {
         type_ = Phi_Polymer;
         nId_ = 1; //species identifier.
      } else if (buffer == "phi_solvent") {
         type_ = Phi_Solvent;
         nId_ = 1; //species identifier.
      } else if (buffer == "mu_polymer") {
         type_ = Mu_Polymer;
         nId_ = 1; //species identifier.
      } else if (buffer == "mu_solvent") {
         type_ = Mu_Solvent;
         nId_ = 1; //species identifier.
      } else if (buffer == "solvent" || buffer == "solvent_size") {
         type_ = Solvent;
         nId_ = 1; //species identifier.
      } else if (buffer == "cell_param") {
         type_ = Cell_Param;
         nId_ = 1; //lattice parameter identifier.
      } else {
         // Search in parameterTypes array for this sweep parameter
         bool found = false;
         for (int i = 0; i < parameterTypesPtr_->size(); i++) {
            ParameterType& pType = (*parameterTypesPtr_)[i];
            if (buffer == pType.name) {
               type_ = Special;
               nId_ = pType.nId;
               parameterTypeId_ = i;
               found = true;
               break;
            }
         }
         if (!found) {
            std::string msg;
            msg = "Invalid SweepParameter::ParamType value: " + buffer;
            UTIL_THROW(msg.c_str());
         }
      }
 
      if (id_.isAllocated()) id_.deallocate();
      id_.allocate(nId_);
   }
 
   /*
   * Write type enum value
   */
   void SweepParameter::writeParamType(std::ostream& out) const
   {
      out << type();
   }
 
   /*
   * Get the ParameterType object for a specialized sweep parameter
   */
   ParameterType& SweepParameter::parameterType() const
   {  
      UTIL_CHECK(isSpecialized());
      return (*parameterTypesPtr_)[parameterTypeId_]; 
   }
 
   /*
   * Get the current value from the parent system.
   */
   void SweepParameter::getInitial()
   {
      initial_ = get_();
   }
 
   /*
   * Set a new value in the parent system.
   */
   void SweepParameter::update(double newVal)
   {
      set_(newVal);
   }
 
   /*
   * Get string representation of type enum value.
   */
   std::string SweepParameter::type() const
   {
      if (type_ == Block) {
         return "block";
      } else if (type_ == Chi) {
         return "chi";
      } else if (type_ == Kuhn) {
         return "kuhn";
      } else if (type_ == Phi_Polymer) {
         return "phi_polymer";
      } else if (type_ == Phi_Solvent) {
         return "phi_solvent";
      } else if (type_ == Mu_Polymer) {
         return "mu_polymer";
      } else if (type_ == Mu_Solvent) {
         return "mu_solvent";
      } else if (type_ == Solvent) {
         return "solvent_size";
      } else if (type_ == Special) {
         return parameterType().name;
      } else {
         UTIL_THROW("Invalid type_ in accessor SweepParameter::type().");
      }
   }
 
   double SweepParameter::get_()
   {
      if (type_ == Block) {
         return systemPtr_->mixture().polymer(id(0)).block(id(1)).length();
      } else if (type_ == Chi) {
         return systemPtr_->interaction().chi(id(0), id(1));
      } else if (type_ == Kuhn) {
         return systemPtr_->mixture().monomer(id(0)).kuhn();
      } else if (type_ == Phi_Polymer) {
         return systemPtr_->mixture().polymer(id(0)).phi();
      } else if (type_ == Phi_Solvent) {
         return systemPtr_->mixture().solvent(id(0)).phi();
      } else if (type_ == Mu_Polymer) {
         return systemPtr_->mixture().polymer(id(0)).mu();
      } else if (type_ == Mu_Solvent) {
         return systemPtr_->mixture().solvent(id(0)).mu();
      } else if (type_ == Solvent) {
         return systemPtr_->mixture().solvent(id(0)).size();
      } else if (type_ == Special) {
         ParameterModifier* modifier = parameterType().modifierPtr;
         std::string name = parameterType().name;
         return modifier->getParameter(name,id_);
      } else {
         UTIL_THROW("Invalid type_ in SweepParameter::get_.");
      }
   }
 
   void SweepParameter::set_(double newVal)
   {
      if (type_ == Block) {
         systemPtr_->mixture().polymer(id(0)).block(id(1)).setLength(newVal);
      } else if (type_ == Chi) {
         systemPtr_->interaction().setChi(id(0), id(1), newVal);
      } else if (type_ == Kuhn) {
         systemPtr_->mixture().setKuhn(id(0), newVal);
      } else if (type_ == Phi_Polymer) {
         systemPtr_->mixture().polymer(id(0)).setPhi(newVal);
      } else if (type_ == Phi_Solvent) {
         systemPtr_->mixture().solvent(id(0)).setPhi(newVal);
      } else if (type_ == Mu_Polymer) {
         systemPtr_->mixture().polymer(id(0)).setMu(newVal);
      } else if (type_ == Mu_Solvent) {
         systemPtr_->mixture().solvent(id(0)).setMu(newVal);
      } else if (type_ == Solvent) {
         systemPtr_->mixture().solvent(id(0)).setSize(newVal);
      } else if (type_ == Special) {
         ParameterModifier* modifier = parameterType().modifierPtr;
         std::string name = parameterType().name;
         return modifier->setParameter(name,id_,newVal);
      } else {
         UTIL_THROW("Invalid type_ in SweepParameter::set_.");
      }
   }
 
   // Definitions of operators, with no explicit instantiations. 

   std::istream& operator >> (std::istream& in, 
                              SweepParameter& param)
   {
      // Read the parameter type.
      param.readParamType(in);  
      // Read the identifiers associated with this parameter type. 
      for (int i = 0; i < param.nId_; ++i) {
         in >> param.id_[i];
      }
      // Read in the range in the parameter to sweep over
      in >> param.change_;
 
      return in;
   }

   std::ostream& operator << (std::ostream& out, 
                              SweepParameter const & param)
   {
      param.writeParamType(out);
      out << "  ";
      for (int i = 0; i < param.nId_; ++i) {
         out << param.id(i);
         out << " ";
      }
      out << param.change_;
 
      return out;
   }
 
}
}