Parser_Eval.cpp

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#include <Parser_Eval.h>
 
double Parser_Eval::eval_fct_single_position_single_compo(const DoubleVect& position, const double* t, const double* val_param, const int ncomp) const
{
  const int D = position.size();
  const int with_time = t ? 1 : 0;
 
  Parser_U& fct = parser(ncomp);
  if (with_time) fct.setVar(0, *t);
  for (int d = 0; d < D; d++)
    fct.setVar(with_time + d, position(d));
  if (val_param) fct.setVar(4, *val_param);
  return fct.eval();
}
 
void Parser_Eval::eval_fct_single_position(const DoubleVect& position, const double* t, const double* val_param, DoubleVect& val) const
{
  for (int k = 0; k < fonction_.size(); k++)
    val(k) = eval_fct_single_position_single_compo(position, t, val_param, k);
}
 
void Parser_Eval::eval_fct_single_compo(const DoubleTab& positions, const double* t, DoubleVect& val, const int ncomp) const
{
  const int pos_size = positions.dimension(0), D = positions.dimension(1);
  DoubleVect position(D);
 
  for (int i = 0; i < pos_size; i++)
    {
      for (int d = 0; d < D; d++) position(d) = positions(i, d);
      val(i) = eval_fct_single_position_single_compo(position, t, nullptr, ncomp);
    }
}
 
void Parser_Eval::eval_fct_(const DoubleTab& positions, const double* t, const DoubleTab* val_param, DoubleTab& val) const
{
  const int pos_size = positions.dimension(0), D = positions.dimension(1);
  DoubleVect position(D);
 
  for (int i = 0; i < pos_size; i++)
    {
      for (int d = 0; d < D; d++) position(d) = positions(i, d);
      for (int k = 0; k < fonction_.size(); k++)
        val(i, k) = eval_fct_single_position_single_compo(position, t, val_param ? &(*val_param)(i) : nullptr, k);
    }
}
 
void Parser_Eval::eval_fct(const DoubleTabs& variables, DoubleTab& val) const
{
  int dim;
  int pos_size = val.dimension(0);
 
  assert(fonction_.size() == 1);
 
  int nb_dim = val.nb_dim();
  int nbvars = variables.size();
 
  Parser_U& fct = parser(0);
 
  if (nb_dim==1)
    {
      for (int i=0; i<pos_size; i++)
        {
          for (int ivar=0; ivar<nbvars; ivar++)
            fct.setVar(ivar,variables[ivar](i));
 
          val(i) = fct.eval();
        }
    }
  else
    {
      dim = val.dimension(1);
      for (int i=0; i<pos_size; i++)
        {
          for(int k=0; k<dim; k++)
            {
              for (int ivar=0; ivar<nbvars; ivar++)
                fct.setVar(ivar,variables[ivar](i,k));
              val(i,k) = fct.eval();
            }
        }
    }
}