// This may look like C code, but it is really -*- C++ -*-
#ifndef LOCALMAP_SEEN
#define LOCALMAP_SEEN

#include "pixelmap.h"
#include "sphericalmap.h"
#include "ndatablock.h"

#include "anydataobj.h"
#include "ppersist.h"



// ***************** Class LocalMap *****************************



namespace SOPHYA {


/* Class LocalMap */


template<class T>
class LocalMap : public PixelMap<T>
{

public:

LocalMap();
LocalMap(int_4 nx, int_4 ny);
LocalMap(const LocalMap<T>& lm, bool share);
LocalMap(const LocalMap<T>& lm);
virtual ~LocalMap();

inline virtual bool IsTemp(void) const { return pixels_.IsTemp();}

/*! Setting blockdata to temporary (see ndatablock documentation) */
inline virtual void SetTemp(bool temp=false) const {pixels_.SetTemp(temp);};


// ---------- Overloading of () to access pixel number k ----

inline T& operator()(int_4 k) {return(PixVal(k));}
inline T const& operator()(int_4 k) const {return(PixVal(k));}
inline T& operator()(int_4 ix, int_4 iy) {return PixVal(iy*nSzX_+ix);};
inline T const& operator()(int_4 ix, int_4 iy) const {return PixVal(iy*nSzX_+ix);};
   
// ---------- Definition of PixelMap abstract methods -------

virtual int_4 NbPixels() const;   // D.Y. int change en int_4 rationalisation Mac
  
virtual T& PixVal(int_4 k);
virtual T const& PixVal(int_4 k) const;

virtual bool ContainsSph(double theta, double phi) const;
virtual int_4 PixIndexSph(double theta,double phi) const;
   
virtual void PixThetaPhi(int_4 k,double& theta,double& phi) const;

virtual T SetPixels(T v);

virtual double PixSolAngle(int_4 k) const; 

// ---------- Specific methods ------------------------------

void ReSize(int_4 nx, int_4 ny);

inline virtual char* TypeOfMap() const {return "LOCAL";};
 
virtual void SetOrigin(double theta=90.,double phi=0.,double angle=0.);
virtual void SetOrigin(double theta,double phi,int_4 x0,int_4 y0,double angle=0.);

virtual void SetSize(double angleX,double angleY);

/*! Check to see if the local mapping is done */
inline bool LocalMap_isDone() const {return(originFlag_ && extensFlag_);};

virtual void Project(SphericalMap<T>& sphere) const;
  
/* There should be a more complex algorithm somewhere to combine *several* local maps to a full sphere.
      -> static method, or separate class */
  
/*! provides a integer characterizing the pixelization refinement  (here : number of pixels) */
inline virtual int_4 SizeIndex() const {return(nPix_);}
inline int_4 Size_x() const {return nSzX_;}
inline int_4 Size_y() const {return nSzY_;}

/* Je rajoute ces 2 fonctions inlines pour compatibilite d'interface 
   avec TArray  -   Reza 30/8/2000                                   */
inline int_4 SizeX() const {return nSzX_;}
inline int_4 SizeY() const {return nSzY_;}

inline void Origin(double& theta,double& phi,int_4& x0,int_4& y0,double& angle) const {theta= theta0_; phi= phi0_; x0= x0_; y0= y0_;angle= angle_;}

inline void Aperture(double& anglex,double& angley) const {anglex= angleX_; angley= angleY_;}


/*  Acces to the DataBlock  */
inline       NDataBlock<T>& DataBlock()       {return pixels_;}
inline const NDataBlock<T>& DataBlock() const {return pixels_;}

/* impression */ 
void print(ostream& os) const;

// Operations diverses  = , +=, ...


virtual LocalMap<T>& Set(const LocalMap<T>& a);
inline  LocalMap<T>& operator = (const LocalMap<T>& a) {return Set(a);}

// A += -= *= /= x (ajoute, soustrait, ... x a tous les elements)

  //! Fill LocalMap with all elements equal to \b x
virtual LocalMap<T>& SetT(T a); 
inline  LocalMap<T>& operator = (T a) {return SetT(a);}

//! Add \b x to all elements
virtual LocalMap<T>& Add(T a); 
inline  LocalMap<T>&  operator += (T x)  { return Add(x); }
//! Substract \b x to all elements
virtual LocalMap<T>& Sub(T a); 
inline   LocalMap<T>&  operator -= (T x)  { return Sub(x); }
//! Multiply all elements by \b x
virtual LocalMap<T>& Mul(T a); 
inline  LocalMap<T>&  operator *= (T x)  { return Mul(x); }
//! Divide all elements by \b x
virtual LocalMap<T>& Div(T a); 
inline  LocalMap<T>&  operator /= (T x)  { return Div(x); }

// A += -=  (ajoute, soustrait element par element les deux spheres )
  //! Operator LocalMap += LocalMap
  virtual LocalMap<T>&  AddElt(const LocalMap<T>& a);
  inline  LocalMap<T>&  operator += (const LocalMap<T>& a)  { return AddElt(a); }



  virtual LocalMap<T>&  SubElt(const LocalMap<T>& a);
  //! Operator LocalMap -= LocalMap
  inline  LocalMap<T>&  operator -= (const LocalMap<T>& a)  { return SubElt(a); }
// Multiplication, division element par element les deux LocalMap 
  virtual LocalMap<T>&  MulElt(const LocalMap<T>& a);
  inline  LocalMap<T>&  operator *= (const LocalMap<T>& a)  { return MulElt(a); }


void CloneOrShare(const LocalMap<T>& a);
void Share(const LocalMap<T>& a);
LocalMap<T>& CopyElt(const LocalMap<T>& a);


// ---------- Méthodes internes -----------------------------
          
private :

void InitNul();
void Getij(int_4 k,int_4& i,int_4& j) const;
void ReferenceToUser(double& theta,double& phi) const; 
void UserToReference(double& theta,double& phi) const;
void PixProjToAngle(double x,double y,double& theta,double& phi) const; 
void AngleProjToPix(double theta,double phi,double& x,double& y) const; 

void recopierVariablesSimples(const LocalMap<T>& lm);


// ---------- Variables internes ----------------------------

int_4 nSzX_;
int_4 nSzY_;
int_4 nPix_;
bool originFlag_;
bool extensFlag_;
int_4 x0_;
int_4 y0_;
double theta0_;
double phi0_;
double angle_;
double cos_angle_;
double sin_angle_;
double angleX_;
double angleY_;
double tgAngleX_;
double tgAngleY_;
NDataBlock<T> pixels_;
};

////////////////////////////////////////////////////////////////
// Surcharge d'operateurs A (+,-,*,/) (T) x
/*! \ingroup SkyMap \fn operator+(const LocalMap<T>&,T)
  \brief Operator LocalMap = LocalMap + constant */
template <class T> inline LocalMap<T> operator + (const LocalMap<T>& a, T b)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Add(b); return result;}
/*! \ingroup SkyMap \fn operator+(T,const LocalMap<T>&)
  \brief Operator LocalMap = constant + LocalMap */
template <class T> inline LocalMap<T> operator + (T b,const LocalMap<T>& a)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Add(b); return result;}


/*! \ingroup SkyMap\fn operator-(const LocalMap<T>&,T)
  \brief Operator LocalMap = LocalMap - constant */
template <class T> inline LocalMap<T> operator - (const LocalMap<T>& a, T b)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Sub(b); return result;}

/*! \ingroup  \fn operator-(T,const LocalMap<T>&)
  \brief Operator LocalMap = constant - LocalMap */
template <class T> inline LocalMap<T> operator - (T b,const LocalMap<T>& a)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Sub(b,true); return result;}

/*! \ingroup SkyMap \fn operator*(const LocalMap<T>&,T)
  \brief Operator LocalMap = LocalMap * constant */
template <class T> inline LocalMap<T> operator * (const LocalMap<T>& a, T b)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Mul(b); return result;}

/*! \ingroup SkyMap \fn operator*(T,const LocalMap<T>&)
  \brief Operator LocalMap = constant * LocalMap */
template <class T> inline LocalMap<T> operator * (T b,const LocalMap<T>& a)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Mul(b); return result;}

/*! \ingroup SkyMap \fn operator/(const LocalMap<T>&,T)
  \brief Operator LocalMap = LocalMap / constant */
template <class T> inline LocalMap<T> operator / (const LocalMap<T>& a, T b)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Div(b); return result;}

/*! \ingroup SkyMap \fn operator/(T,const LocalMap<T>&)
  \brief Operator LocalMap = constant / LocalMap  */
template <class T> inline LocalMap<T> operator / (T b, const LocalMap<T>& a)
    {LocalMap<T> result; result.CloneOrShare(a); result.SetTemp(true); 
    result.Div(b, true); return result;}

////////////////////////////////////////////////////////////////
// Surcharge d'operateurs C = A (+,-) B

/*! \ingroup SkyMap \fn operator+(const LocalMap<T>&,const LocalMap<T>&)
  \brief Operator LocalMap = LocalMap + LocalMap */
template <class T>
inline LocalMap<T> operator + (const LocalMap<T>& a,const LocalMap<T>& b)
    { LocalMap<T> result; result.SetTemp(true); 
    if (b.IsTemp())  { result.Share(b); result.AddElt(a); }
    else { result.CloneOrShare(a); result.AddElt(b); }
    return result; }

/*! \ingroup SkyMap \fn operator-(const LocalMap<T>&,const LocalMap<T>&)
  \brief Operator LocalMap = LocalMap - LocalMap */
template <class T>
inline LocalMap<T> operator - (const LocalMap<T>& a,const LocalMap<T>& b)
    { LocalMap<T> result; result.SetTemp(true); 
    if (b.IsTemp())  { result.Share(b); result.SubElt(a, true); }
    else { result.CloneOrShare(a); result.SubElt(b); }
    return result; }


} // Fin du namespace

#endif