#include "Stntuple/obj/TStnSiHit.hh"

#include <iostream>
#include <climits>

ClassImp(TStnSiHit)

// For now, use the default streamer
void TStnSiHit::Streamer(TBuffer &R__b) {
  
  UInt_t R__s, R__c;
  if (R__b.IsReading()) {
    Version_t R__v = R__b.ReadVersion(&R__s, &R__c); if (R__v) { }
    TObject::Streamer(R__b);
    fGlobal.Streamer(R__b);
    R__b >> fStripNum;
    R__b >> fLocal;
    R__b >> fError;
    if (R__v==1) { // This will soon be just obsolete
      Int_t q;
      R__b >> q;
      fQtotal=q;
    }
    else {
      R__b >> fQtotal;
    }
    if (R__v>1) R__b >> fNoise;
    R__b >> fNstrip;
    if (R__v>4) {
      R__b >> fStatus;
    }
    else if (R__v==4) {
      bool stat;
      R__b >> stat;
      if (stat) fStatus=0;
      else fStatus=1;
    }
    fDigiCode.Streamer(R__b);
    R__b.CheckByteCount(R__s, R__c, TStnSiHit::IsA());
  } else {
    R__c = R__b.WriteVersion(TStnSiHit::IsA(), kTRUE);
    TObject::Streamer(R__b);
    fGlobal.Streamer(R__b);
    R__b << fStripNum;
    R__b << fLocal;
    R__b << fError;
    R__b << fQtotal;
    R__b << fNoise;
    R__b << fNstrip;
    R__b << fStatus;
    fDigiCode.Streamer(R__b);
    R__b.SetByteCount(R__c, kTRUE);
  }
}

TStnSiHit::TStnSiHit()
  : fGlobal(0.0,0.0,0.0),
    fStripNum(0.0),fLocal(0.0),fError(-1.0),
    fQtotal(0.0),fNoise(0.0),fNstrip(0),fStatus(0),fDigiCode(0),
    fCdfSiHit(NULL)
{
  SetUniqueID(UINT_MAX);  
}

  
TStnSiHit::~TStnSiHit()
{}

// Pack the OBSP number into fUniqueID.  Allow for up to 3 particles
// contributing the same hit.
Int_t TStnSiHit::NObsp() const{
  if (GetUniqueID()==UINT_MAX) {
    return 0;
  }
  else if (GetUniqueID()>=0x200000) {
    return 3;
  }
  else if (GetUniqueID()>=0x800) {
    return 2;
  }
  else {
    return 1;
  }
}

Int_t TStnSiHit::Obsp(int i) const{
  if (i>2) return -1;
  if (GetUniqueID()==UINT_MAX) return -1;
  int id = (GetUniqueID() >> i*11) & 0x7ff;
  if (id==0x7ff) id=-2; // Special treatment of noise hits
  return id;
}

void TStnSiHit::SetObsp(int i, int id) {
  if (i>2 || id >= 0x7ff) return;
  if (id==-2) id=0x7ff; // Special treatment of noise hits
  unsigned int uid=GetUniqueID();
  if (uid==UINT_MAX) uid=0; // Initialize on first call
  uid |= (id & 0x7ff) << i*11;
  SetUniqueID(uid);
}

void TStnSiHit::Print(Option_t* opt) const {
  std::cout << "Global (" << fGlobal.X() 
	    << "," << fGlobal.Y()
	    << "," << fGlobal.Z() << ")"
	    << ", Strip# " << fStripNum
	    << ", Local " << fLocal
	    << ", Err " << fError
	    << ", Q " << fQtotal
	    << ", Noise " << fNoise
	    << ", Nstrip " << fNstrip
	    << ", Good " << Good()
	    << ", Has bad neighbor " << HasBadNeighbor()
	    << std::endl;
  fDigiCode.Print(opt);
}