poscalculator.hpp

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//Copyright (C) 2010-2011 Lutz Foucar

/**
 * @file poscalculator.hpp contains classes for calculating the position in a
 *                         DLD
 *
 * @author Lutz Foucar
 */
#ifndef _POSCALCULATOR_H
#define _POSCALCULATOR_H

#include <utility>
#include <cmath>

namespace cass
{
namespace ACQIRIS
{
/** position calculator base class
 *
 * @author Lutz Foucar
 */
class PositionCalculator
{
public:
  virtual ~PositionCalculator() {}
  virtual std::pair<double,double> operator()(const std::pair<double, double>&)=0;
};

/** position calculator for quad anode
 *
 * @author Lutz Foucar
 */
class XYCalc : public PositionCalculator
{
public:
  virtual std::pair<double,double> operator()(const std::pair<double, double>& layer)
  {
    return layer;
  }
};

/** position calculator for hex anodes u and v layer
 *
 * @author Lutz Foucar
 */
class UVCalc : public PositionCalculator
{
public:
  virtual std::pair<double,double> operator()(const std::pair<double, double>& layer)
  {
    const double u(layer.first);
    const double v(layer.second);
    return std::make_pair(u, 1./std::sqrt(3) * (u-2.*v));
  }
};

/** position calculator for hex anodes u and w layer
 *
 * @author Lutz Foucar
 */
class UWCalc : public PositionCalculator
{
public:
  virtual std::pair<double,double> operator()(const std::pair<double, double>& layer)
  {
    const double u(layer.first);
    const double w(layer.second);
    return std::make_pair(u, 1./std::sqrt(3) * (2.*w-u));
  }
};

/** position calculator for hex anodes u and v layer
 *
 * @author Lutz Foucar
 */
class VWCalc : public PositionCalculator
{
public:
  virtual std::pair<double,double> operator()(const std::pair<double, double>& layer)
  {
    const double v(layer.first);
    const double w(layer.second);
    return std::make_pair(v+w, 1./std::sqrt(3) * (w-v));
  }
};
}//end namepsace acqiris
}//end namespace cass
#endif