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/* \author Bastian Steder */

#ifndef PCL_PIECEWISE_LINEAR_FUNCTION_H_
#define PCL_PIECEWISE_LINEAR_FUNCTION_H_

#include <vector>

namespace pcl 
{
  /**
    * \brief This provides functionalities to efficiently return values for piecewise linear function
    * \ingroup common
    */
  class PiecewiseLinearFunction
  {
    public:
      // =====CONSTRUCTOR & DESTRUCTOR=====
      //! Constructor
      PiecewiseLinearFunction (float factor, float offset);
      
      // =====PUBLIC METHODS=====
      //! Get the list of known data points
      std::vector<float>& 
      getDataPoints () 
      { 
        return data_points_;
      }
      
      //! Get the value of the function at the given point
      inline float 
      getValue (float point) const;
      
      // =====PUBLIC MEMBER VARIABLES=====
      
    protected:
      // =====PROTECTED MEMBER VARIABLES=====
      std::vector<float> data_points_;
      float factor_;
      float offset_;
  };

}  // end namespace pcl

#include <pcl/common/impl/piecewise_linear_function.hpp>

#endif  //#ifndef PCL_PIECEWISE_LINEAR_FUNCTION_H_
