SurveyError.h

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#ifndef CondFormats_Alignment_SurveyError_H
#define CondFormats_Alignment_SurveyError_H

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

class SurveyError
{
  typedef align::ErrorMatrix ErrorMatrix;
  typedef ErrorMatrix::value_type Scalar;

  public:

  inline SurveyError(
             uint8_t structureType = 0, // default unknown
             align::ID rawId = 0,       // default unknown
             const ErrorMatrix& = ErrorMatrix() // default 0
             );

  inline uint8_t structureType() const;

  inline align::ID rawId() const;
  
  inline ErrorMatrix matrix() const;

private:

  static const unsigned int nPar_ = ErrorMatrix::kRows;
  static const unsigned int size_ = nPar_ * (nPar_ + 1) / 2;

  uint8_t   m_structureType;
  align::ID m_rawId;

  Scalar m_errors[size_];
};

SurveyError::SurveyError(uint8_t structureType,
             align::ID rawId,
             const ErrorMatrix& cov):
  m_structureType(structureType),
  m_rawId(rawId)
{
  const Scalar* data = cov.Array(); // lower triangular of cov

  for (unsigned int i = 0; i < size_; ++i) m_errors[i] = data[i];
}

uint8_t SurveyError::structureType() const
{
  return m_structureType;
}

align::ID SurveyError::rawId() const
{
  return m_rawId;
}

SurveyError::ErrorMatrix SurveyError::matrix() const
{
  return ErrorMatrix(m_errors, m_errors + size_);
}

#endif