//*CMZ :  1.03/09 05/12/97  14.21.36  by  Fons Rademakers
//*-- Author :    Rene Brun   27/10/95

//*KEEP,CopyRight,T=C.
/*************************************************************************
 * Copyright(c) 1995-1998, The ROOT System, All rights reserved.         *
 * Authors: Rene Brun, Nenad Buncic, Valery Fine, Fons Rademakers.       *
 *                                                                       *
 * Permission to use, copy, modify and distribute this software and its  *
 * documentation for non-commercial purposes is hereby granted without   *
 * fee, provided that the above copyright notice appears in all copies   *
 * and that both the copyright notice and this permission notice appear  *
 * in the supporting documentation. The authors make no claims about the *
 * suitability of this software for any purpose.                         *
 * It is provided "as is" without express or implied warranty.           *
 *************************************************************************/
//*KEND.

//*KEEP,TROOT.
#include "TROOT.h"
//*KEEP,TF3.
#include "TF3.h"
//*KEEP,TMath.
#include "TMath.h"
//*KEEP,TH3.
#include "TH3.h"
//*KEEP,TVirtualPad.
#include "TVirtualPad.h"
//*KEND.

ClassImp(TF3)

//______________________________________________________________________________
//
// a 3-Dim function with parameters
//

//______________________________________________________________________________
 TF3::TF3(): TF2()
{
//*-*-*-*-*-*-*-*-*-*-*F3 default constructor*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-*                  ======================

}


//______________________________________________________________________________
 TF3::TF3(const char *name,const char *formula, Float_t xmin, Float_t ymin, Float_t zmin, Float_t xmax, Float_t ymax, Float_t zmax)
      :TF2(name,formula,xmin,ymin,xmax,ymax)
{
//*-*-*-*-*-*-*F3 constructor using a formula definition*-*-*-*-*-*-*-*-*-*-*
//*-*          =========================================
//*-*
//*-*  See TFormula constructor for explanation of the formula syntax.
//*-*
//*-*
//*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

   fZmin   = zmin;
   fZmax   = zmax;
   fNpz    = 30;

}

//______________________________________________________________________________
 TF3::TF3(const char *name, Double_t (*fcn)(Double_t *, Double_t *), Int_t npar)
      :TF2(name,fcn, npar)
{
//*-*-*-*-*-*-*F3 constructor using a pointer to real function*-*-*-*-*-*-*-*
//*-*          ===============================================
//*-*
//*-*   npar is the number of free parameters used by the function
//*-*
//*-*  For example, for a 2-dim function with 3 parameters, the user function
//*-*      looks like:
//*-*    Double_t fun1(Double_t *x, Double_t *par)
//*-*        return par[0] + par[1]*exp(par[2]*x[0]*x[1]);
//*-*
//*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

   fZmin   = 0;
   fZmax   = 1;
   fNpz    = 30;

}

//______________________________________________________________________________
 TF3::~TF3()
{
//*-*-*-*-*-*-*-*-*-*-*F3 default destructor*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-*                  =====================

}

//______________________________________________________________________________
 TF3::TF3(const TF3 &f3)
{
   ((TF3&)f3).Copy(*this);
}

//______________________________________________________________________________
 void TF3::Copy(TObject &obj)
{
//*-*-*-*-*-*-*-*-*-*-*Copy this F3 to a new F3*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-*                  ========================

   TF2::Copy(obj);
   ((TF3&)obj).fZmin = fZmin;
   ((TF3&)obj).fZmax = fZmax;
   ((TF3&)obj).fNpz  = fNpz;
}

//______________________________________________________________________________
 Int_t TF3::DistancetoPrimitive(Int_t px, Int_t py)
{
//*-*-*-*-*-*-*-*-*-*-*Compute distance from point px,py to a function*-*-*-*-*
//*-*                  ===============================================
//*-*  Compute the closest distance of approach from point px,py to this function.
//*-*  The distance is computed in pixels units.
//*-*
//*-*  Algorithm:
//*-*
//*-*
//*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

   return TF1::DistancetoPrimitive(px, py);

}

//______________________________________________________________________________
 void TF3::Draw(Option_t *option)
{
//*-*-*-*-*-*-*-*-*-*-*Draw this function with its current attributes*-*-*-*-*
//*-*                  ==============================================

   TString opt = option;
   opt.ToLower();
   if (!opt.Contains("s")) gPad->Clear();

   AppendPad(option);

}

//______________________________________________________________________________
 void TF3::ExecuteEvent(Int_t event, Int_t px, Int_t py)
{
//*-*-*-*-*-*-*-*-*-*-*Execute action corresponding to one event*-*-*-*
//*-*                  =========================================
//*-*  This member function is called when a F3 is clicked with the locator
//*-*
//*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

   TF1::ExecuteEvent(event, px, py);
}

//______________________________________________________________________________
 void TF3::GetRange(Float_t &xmin, Float_t &ymin, Float_t &zmin, Float_t &xmax, Float_t &ymax, Float_t &zmax)
{
//*-*-*-*-*-*-*-*-*-*-*Return range of function*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-*                  ========================

   xmin = fXmin;
   xmax = fXmax;
   ymin = fYmin;
   ymax = fYmax;
   zmin = fZmin;
   zmax = fZmax;
}

//______________________________________________________________________________
 void TF3::Paint(Option_t *)
{
//*-*-*-*-*-*-*-*-*Paint this 2-D function with its current attributes*-*-*-*-*
//*-*              ===================================================

}

//______________________________________________________________________________
 void TF3::SetNpz(Int_t npz)
{
//*-*-*-*-*-*-*-*Set the number of points used to draw the function*-*-*-*-*-*
//*-*            ==================================================

   if(npz > 4 && npz < 1000) fNpz = npz;
}

//______________________________________________________________________________
 void TF3::SetRange(Float_t xmin, Float_t ymin, Float_t zmin, Float_t xmax, Float_t ymax, Float_t zmax)
{
//*-*-*-*-*-*Initialize the upper and lower bounds to draw the function*-*-*-*
//*-*        ==========================================================

   fXmin = xmin;
   fXmax = xmax;
   fYmin = ymin;
   fYmax = ymax;
   fZmin = zmin;
   fZmax = zmax;
}