// -------------------------------------------------------------------------
// -----                      R3BFieldPar source file                  -----
// -------------------------------------------------------------------------
#include "R3BFieldPar.h"
#include "R3BFieldMap.h"
#include "R3BFieldConst.h"

#include "FairParamList.h"

#include "TDirectory.h"
#include <iostream>

using std::cout;
using std::cerr;
using std::endl;

//const int kMaxLen = 2048;

// ------   Constructor   --------------------------------------------------
R3BFieldPar::R3BFieldPar(const char* name, const char* title,
			 const char* context) 
  : FairParGenericSet(name, title, context) {
  fType = -1;
  fXmin = fXmax = fYmin = fYmax = fZmin = fZmax = 0.;
  fBx   = fBy   = fBz   = 0.;
  fMapName = "";
  fPosX = fPosY = fPosZ = 0.;
  fScale = 0.;
}
// -------------------------------------------------------------------------

R3BFieldPar::R3BFieldPar() 
 {
  fType = -1;
  fXmin = fXmax = fYmin = fYmax = fZmin = fZmax = 0.;
  fBx   = fBy   = fBz   = 0.;
  fMapName = "";
  fPosX = fPosY = fPosZ = 0.;
  fScale = 0.;
}
// -------------------------------------------------------------------------

// ------   Destructor   ---------------------------------------------------
R3BFieldPar::~R3BFieldPar() { }
// -------------------------------------------------------------------------



// ------   Put parameters   -----------------------------------------------
void R3BFieldPar::putParams(FairParamList* list) {

  if ( ! list ) return;

  list->add("Field Type", fType);


  if ( fType == 0 ) {                               // constant field
    list->add("Field min x", fXmin);
    list->add("Field max x", fXmax);
    list->add("Field min y", fYmin);
    list->add("Field max y", fYmax);
    list->add("Field min z", fZmin);
    list->add("Field max z", fZmax);
    list->add("Field Bx", fBx);
    list->add("Field By", fBy);
    list->add("Field Bz", fBz);
  }

  else if (fType >=1 && fType <= kMaxFieldMapType) {    // field map
    list->add("Field map name", fMapName);
    list->add("Field x position", fPosX);
    list->add("Field y position", fPosY);
    list->add("Field z position", fPosZ);
    list->add("Field scaling factor", fScale);

  }

}
// -------------------------------------------------------------------------



// --------   Get parameters   ---------------------------------------------
Bool_t R3BFieldPar::getParams(FairParamList* list) {

  if ( ! list ) return kFALSE;

  if ( ! list->fill("Field Type", &fType) ) return kFALSE;

  if ( fType == 0 ) {                    // constant field
    if ( ! list->fill("Field min x", &fXmin) ) return kFALSE;
    if ( ! list->fill("Field max x", &fXmax) ) return kFALSE;
    if ( ! list->fill("Field min y", &fYmin) ) return kFALSE;
    if ( ! list->fill("Field max y", &fYmax) ) return kFALSE;
    if ( ! list->fill("Field min z", &fZmin) ) return kFALSE;
    if ( ! list->fill("Field max z", &fZmax) ) return kFALSE;
    if ( ! list->fill("Field Bx", &fBx) ) return kFALSE;
    if ( ! list->fill("Field By", &fBy) ) return kFALSE;
    if ( ! list->fill("Field Bz", &fBz) ) return kFALSE;
  }

  else if (fType >=1 && fType <= kMaxFieldMapType) {    // field map
    Text_t mapName[80];
    if ( ! list->fill("Field map name", mapName, 80) ) return kFALSE;
    fMapName = mapName;
    if ( ! list->fill("Field x position", &fPosX) )  return kFALSE;
    if ( ! list->fill("Field y position", &fPosY) )  return kFALSE;
    if ( ! list->fill("Field z position", &fPosZ) )  return kFALSE;
    if ( ! list->fill("Field scaling factor", &fScale) ) return kFALSE;

  }

  return kTRUE;

}
// -------------------------------------------------------------------------



// ---------   Set parameters from R3BField   ------------------------------
void R3BFieldPar::SetParameters(FairField* field) {

  if ( ! field ) {
    cerr << "-W- R3BFieldPar::SetParameters: Empty field pointer!" << endl;
    return;
  }

  fType = field->GetType();
 
  if ( fType == 0 ) {                                 // constant field
    R3BFieldConst* fieldConst = (R3BFieldConst*) field;
    fBx = fieldConst->GetBx();
    fBy = fieldConst->GetBy();
    fBz = fieldConst->GetBz();
    fXmin = fieldConst->GetXmin();
    fXmax = fieldConst->GetXmax();
    fYmin = fieldConst->GetYmin();
    fYmax = fieldConst->GetYmax();
    fZmin = fieldConst->GetZmin();
    fZmax = fieldConst->GetZmax();
    fMapName = "";
    fPosX = fPosY = fPosZ = fScale = 0.;
  }

  else if ( fType >=1 && fType <= kMaxFieldMapType ) {              // field map
// to be implemented for the  case of R3B
//    R3BFieldMap* fieldMap = (R3BFieldMap*) field;
//    fBx = fBy = fBz = 0.;
//    fXmin = fXmax = fYmin = fYmax = fZmin = fZmax = 0.;
//
//    fMapName = field->GetName();
//    fPosX   = fieldMap->GetPositionX();
//    fPosY   = fieldMap->GetPositionY();
//    fPosZ   = fieldMap->GetPositionZ();
//    fScale  = fieldMap->GetScale();

  }

  else {
    cerr << "-W- R3BFieldPar::SetParameters: Unknown field type "
	 << fType << "!" << endl;
    fBx = fBy = fBz = 0.;
    fXmin = fXmax = fYmin = fYmax = fZmin = fZmax = 0.;
    fMapName = "";
    fPosX = fPosY = fPosZ = fScale = 0.;
  }
  
  return;

}
// -------------------------------------------------------------------------

ClassImp(R3BFieldPar)