SundanceRivaraElementIterator.cpp

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//                             Sundance
//                 Copyright 2011 Sandia Corporation
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/* @HEADER@ */


#include "SundanceRivaraElementIterator.hpp"
#include "SundanceRivaraMesh.hpp"
#include "SundanceRivaraElement.hpp"
#include "SundanceRivaraNode.hpp"


using namespace Sundance::Rivara;
using namespace Teuchos;


ElementIterator::ElementIterator(const RivaraMesh* mesh)
  : mesh_(const_cast<RivaraMesh*>(mesh)), rootIndex_(-1), current_(0),
    startingNewTree_(true)
{}

bool ElementIterator::hasMoreElements() const 
{
  if (rootIndex_ < mesh_->numRootElements()-1)
    {
      return true;
    }
  else if (current_->next() != 0)
    {
      return true;
    }
  else return false;
}

const Element* ElementIterator::getNextElement() const 
{
  if (current_==0)
    {
      current_ = const_cast<Element*>(dynamic_cast<const Element*>(mesh_->element(0)->first()));
      rootIndex_ = 0;
    }
  else if (current_->next() != 0)
    {
      current_ = const_cast<Element*>(dynamic_cast<const Element*>(current_->next()));
    }
  else
    {
      rootIndex_++;
      current_ = const_cast<Element*>(dynamic_cast<const Element*>(mesh_->element(rootIndex_)->first()));
    }
  
  return current_;
  
}