SimpleIncremental2x2DetComputer.h

 
#pragma once

 
#if defined(SimpleIncremental2x2DetComputer_RECURSES)
#error Recursive header files inclusion detected in SimpleIncremental2x2DetComputer.h
#else // defined(SimpleIncremental2x2DetComputer_RECURSES)
#define SimpleIncremental2x2DetComputer_RECURSES
 
#if !defined SimpleIncremental2x2DetComputer_h
#define SimpleIncremental2x2DetComputer_h

// Inclusions
#include <iostream>
#include "DGtal/base/Common.h"
 
#include "DGtal/kernel/NumberTraits.h"
#include "DGtal/kernel/CEuclideanRing.h"
 
namespace DGtal
{

  // template class SimpleIncremental2x2DetComputer
  template <typename TArgumentInteger, typename TResultInteger = TArgumentInteger>
  class SimpleIncremental2x2DetComputer
  {
    // ----------------------- Types ----------------------------------------
  public:
    typedef TArgumentInteger ArgumentInteger;
    BOOST_CONCEPT_ASSERT(( concepts::CEuclideanRing<ArgumentInteger> ));
    typedef ArgumentInteger Integer;
    typedef ArgumentInteger argument_type;

    typedef TResultInteger ResultInteger;
    BOOST_CONCEPT_ASSERT(( concepts::CEuclideanRing<ArgumentInteger> ));

    typedef ResultInteger Value;
    typedef ResultInteger result_type;
 
    // ----------------------- Standard services ------------------------------
  public:

    SimpleIncremental2x2DetComputer();

    SimpleIncremental2x2DetComputer ( const SimpleIncremental2x2DetComputer & other );

    SimpleIncremental2x2DetComputer & operator= ( const SimpleIncremental2x2DetComputer & other );

    ~SimpleIncremental2x2DetComputer();
 
    // ----------------------- Interface --------------------------------------
  public:

    void init(const ArgumentInteger& aA, const ArgumentInteger& aB);

    ResultInteger operator()(const ArgumentInteger& aX, const ArgumentInteger& aY) const;

    ResultInteger operator()(const ArgumentInteger& aA, const ArgumentInteger& aB,
                             const ArgumentInteger& aX, const ArgumentInteger& aY);
 

    void selfDisplay ( std::ostream & out ) const;

    bool isValid() const;
 
    // ------------------------- Private Data --------------------------------
  private:
    ResultInteger myA;
    ResultInteger myB;
    mutable ResultInteger myAY;
    mutable ResultInteger myBX;
    mutable ResultInteger myDet;
    mutable ResultInteger myX;
    mutable ResultInteger myY;
    mutable ResultInteger myDX;
    mutable ResultInteger myDY;
    mutable ResultInteger myADY;
    mutable ResultInteger myBDX;
    mutable ResultInteger myDDet;
 
    const ResultInteger myZero;
    // ------------------------- Hidden services ------------------------------
  protected:
 
 
    // ------------------------- Internals ------------------------------------
  private:

    void partialComputation() const;
 
  }; // end of class SimpleIncremental2x2DetComputer
 

  template <typename TI, typename TO>
  std::ostream&
  operator<< ( std::ostream & out, const SimpleIncremental2x2DetComputer<TI,TO> & object );
 
} // namespace DGtal
 

// Includes inline functions.
#include "DGtal/geometry/tools/determinant/SimpleIncremental2x2DetComputer.ih"
 
//                                                                           //
 
#endif // !defined SimpleIncremental2x2DetComputer_h
 
#undef SimpleIncremental2x2DetComputer_RECURSES
#endif // else defined(SimpleIncremental2x2DetComputer_RECURSES)