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 #ifndef __FORWARD_PI0S_H__
 #define __FORWARD_PI0S_H__
 
 #include <fun4all/SubsysReco.h>
 #include <vector>
 
 #include <TFile.h>
 #include <TH1.h>
 #include <TH2.h>
 #include <TMath.h>
 #include <TTree.h>
 
 class PHCompositeNode;
 class RawClusterContainer;
 class RawCluster;
 class SvtxTrackMap;
 class JetMap;
 class JetEvalStack;
 class JetRecoEval;
 class SvtxTrackEval;
 class PHG4TruthInfoContainer;
 class PHHepMCGenEvent;
 class Forward_pi0s : public SubsysReco
 {
  public:
   Forward_pi0s(const std::string &name = "pi0_eval.root");
   double isoconeradius, mincluspt;
   float jet_cone_size;
   float _etalow, _etahi;
   int _useforwardarm;
   int use_isocone;
 
   int Init(PHCompositeNode *);
   int process_event(PHCompositeNode *);
   int End(PHCompositeNode *);
 
   void set_cluspt_mincut(double pt) { mincluspt = pt; };
   void SetFirstEventNum(int eventnum) { nevents = eventnum; };
   void set_eta_lowhigh(float etalow, float etahi)
   {
     _etalow = etalow;
     _etahi = etahi;
   };
   void useforwardarm(int yesorno) { _useforwardarm = yesorno;};
 
  private:
   void Set_Tree_Branches();
   void initialize_things();
 
   TFile *file;
   TTree *tree;
   TTree *cluster_tree;
   TTree *truth_g4particles;
   TTree *inhcal_tree;
   TTree *fcluster_tree;
 
   std::string outfilename;
 
   int nevents;
   TH1F *histo;
 
   //hcalcluster info
   float hcal_energy;
   float hcal_eta;
   float hcal_phi;
   float hcal_pt;
   float hcal_px;
   float hcal_py;
   float hcal_pz;
   float hcal_theta;
   float hcal_x, hcal_y, hcal_z, hcal_t;
 
   //cluster info
   float clus_energy;
   float clus_eta;
   float clus_phi;
   float clus_pt;
   float clus_px;
   float clus_py;
   float clus_pz;
   float clus_energy2;
   float clus_eta2;
   float clus_phi2;
   float clus_pt2;
   float clus_px2;
   float clus_py2;
   float clus_pz2;
   float clus_theta2;
   float cent_invmass;
   float clus_theta;
   float clus_x, clus_y, clus_z, clus_t;
 
   float fclusenergy2;
   float fclus_eta2;
   float fclus_phi2;
   float fclus_theta2;
   float fclus_pt2;
   float fclus_px2;
   float fclus_py2;
   float fclus_pz2;
   float invmass;
 
   //all truth particles
   float truthpx, truthpy, truthpz;
   float truthp;
   float truthphi;
   float trutheta;
   float truthpt;
   float truthenergy;
   int truthpid;
   int numparticlesinevent;
   int process_id;
 
   //clust truth variables
   float clustruthpx;
   float clustruthpy;
   float clustruthpz;
   float clustruthenergy;
   float clustruthpt;
   float clustruthphi;
   float clustrutheta;
   int clustruthpid;
 
 
 
   float hclustruthpx;
   float hclustruthpy;
   float hclustruthpz;
   float hclustruthenergy;
   float hclustruthpt;
   float hclustruthphi;
   float hclustrutheta;
   int hclustruthpid;
 
   //forward clusters
   float fclusenergy;
   float fclus_eta;
   float fclus_phi;
   float fclus_theta;
   float fclus_pt;
   int fclustruthpid;
   float fclustruthpx;
   float fclustruthpy;
   float fclustruthpz;
   float fclustruthenergy;
   float fclustruthpt;
   float fclustruthphi;
   float fclustrutheta;
   float fclus_px;
   float fclus_py;
   float fclus_pz;
 
   float tpi0e;
   float tpi0px;
   float tpi0py;
   float tpi0pz;
   float tpi0pid;
   float tpi0pt;
   float tpi0phi;
   float tpi0eta;
 
   float tphote1;
   float tphotpx1;
   float tphotpy1;
   float tphotpz1;
   int tphotpid1;
   int tphotparentid1;
   float tphotpt1;
   float tphotphi1;
   float tphoteta1;
 
   float tphote2;
   float tphotpx2;
   float tphotpy2;
   float tphotpz2;
   int tphotpid2;
   int tphotparentid2;
   float tphotpt2;
   float tphotphi2;
   float tphoteta2;
 
   const float pi2 = -1.5707963;
   const float threepi2 = 4.71238898;
   const float pi = 3.1415926;
 };
 
 #endif  // __FORWARD_PI0S_H__

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