/data/refman/pasoursint/CMSSW_5_3_1/src/CondFormats/Alignment/interface/AlignmentSurfaceDeformations.h

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#ifndef AlignmentSurfaceDeformations_H
#define AlignmentSurfaceDeformations_H

#include <vector>

#include "CondFormats/Alignment/interface/Definitions.h"


class AlignmentSurfaceDeformations {
public:

  struct Item {
    align::ID m_rawId;
    int m_parametrizationType;
    int m_index;
  };
  
  typedef std::vector<Item> ItemVector;
  typedef std::vector<align::Scalar>::const_iterator ParametersConstIterator;
  typedef std::pair<ParametersConstIterator,ParametersConstIterator> ParametersConstIteratorPair;

  AlignmentSurfaceDeformations() { }
  virtual ~AlignmentSurfaceDeformations() { }
  
  inline bool empty() const { return m_items.empty(); }
  
  bool add(align::ID rawId, int type, const std::vector<align::Scalar> & parameters) {

    Item item;
    item.m_rawId = rawId;
    item.m_parametrizationType = type;
    item.m_index = m_parameters.size();
    m_items.push_back(item);

    m_parameters.reserve(m_parameters.size() + parameters.size());
    std::copy(parameters.begin(), parameters.end(), std::back_inserter(m_parameters));

    return true;
  }

  const ItemVector & items() const {return m_items; }

  ParametersConstIteratorPair parameters( size_t index ) const {
    ParametersConstIteratorPair pair;
    pair.first  = m_parameters.begin() + m_items[index].m_index;
    if (index<m_items.size()-1) {
      pair.second = m_parameters.begin() + m_items[index+1].m_index;
    } else {
      pair.second = m_parameters.end();
    }
    return pair;
  }
  
 private:

  std::vector<align::Scalar> m_parameters;
  ItemVector m_items;
};

#endif // AlignmentSurfaceDeformations_H