#include "TGLViewer.h"
namespace Alieve
{
class ITSModuleStepper;
}

void its_module_stepper(Int_t col = 4 , Int_t row = 4)
{
  AliRunLoader* rl =  Alieve::Event::AssertRunLoader();
  rl->LoadDigits("ITS");
  TTree* dt = rl->GetTreeD("ITS", false);
  Alieve::ITSDigitsInfo* di = new Alieve::ITSDigitsInfo();
  di->SetTree(dt);

  gStyle->SetPalette(1, 0);
  gReve->DisableRedraw();


  Float_t CW = 50;
  Float_t CH = 40;
  Float_t off_x = CW*0.3;
  Float_t off_y = CH*0.31;

  Reve::ZTrans* mx;
  Bool_t rnrFrame = kTRUE;
  Color_t wcol    = kCyan-9;  

  Int_t col, row;
  // SPD  
  col = 3; row = 4;
  Alieve::ITSModuleStepper* spd_lay1 = new Alieve::ITSModuleStepper(di);
  spd_lay1->SetStepper(col, row, CW/col, CH*0.6/row);
  mx = spd_lay1->PtrMainHMTrans();
  mx->SetPos(0, 10, 0);
  spd_lay1->DisplayDet(0, 1);
  spd_lay1->SetName("SPD 1");
  spd_lay1->SetRnrFrame(rnrFrame);
  spd_lay1->SetWColor(wcol);
  gReve->AddRenderElement(spd_lay1);

  Alieve::ITSModuleStepper* spd_lay2 = new Alieve::ITSModuleStepper(di);
  spd_lay2->SetStepper(col, row, CW/col, CH*0.6/row);
  mx = spd_lay2->PtrMainHMTrans();
  mx->SetPos(CW+off_x, 10, 0);
  spd_lay2->DisplayDet(0, 2);
  spd_lay2->SetName("SPD 2");
  spd_lay2->SetRnrFrame(rnrFrame);
  spd_lay2->SetWColor(wcol);
  gReve->AddRenderElement(spd_lay2);

  // SDD  
  col = 4; row = 3;
  Alieve::ITSModuleStepper* sdd_lay1 = new Alieve::ITSModuleStepper(di);
  sdd_lay1->SetStepper(col, row,  CW/col, CH/row);
  mx = sdd_lay1->PtrMainHMTrans();
  mx->SetPos(0, CH+off_y, 0);
  sdd_lay1->DisplayDet(1, 3);
  sdd_lay1->SetName("SDD 1");
  sdd_lay1->SetRnrFrame(rnrFrame);
  sdd_lay1->SetWColor(wcol);
  gReve->AddRenderElement(sdd_lay1);


  Alieve::ITSModuleStepper* sdd_lay2 = new Alieve::ITSModuleStepper(di);
  sdd_lay2->SetStepper(col, row, CW/col, CH/row); 
  mx = sdd_lay2->PtrMainHMTrans();
  mx->SetPos(CW+off_x, CH+off_y, 0);
  sdd_lay2->DisplayDet(1, 4);
  sdd_lay2->SetName("SDD 2");
  sdd_lay2->SetRnrFrame(rnrFrame);
  sdd_lay2->SetWColor(wcol);
  gReve->AddRenderElement(sdd_lay2);


  // SSD 
  col = 5; row = 3;
  Alieve::ITSModuleStepper* ssd_lay1 = new Alieve::ITSModuleStepper(di);
  ssd_lay1->SetStepper(col, row,  CW/col, CH/row);
  mx = ssd_lay1->PtrMainHMTrans();
  mx->SetPos(0, 2*(CH+off_y), 0);
  ssd_lay1->DisplayDet(2, 5);
  ssd_lay1->SetName("SSD 1");
  ssd_lay1->SetRnrFrame(rnrFrame);
  ssd_lay1->SetWColor(wcol);
  gReve->AddRenderElement(ssd_lay1);


  Alieve::ITSModuleStepper* ssd_lay2 = new Alieve::ITSModuleStepper(di);
  ssd_lay2->SetStepper(col, row,  CW/col, CH/row); 
  mx = ssd_lay2->PtrMainHMTrans();
  mx->SetPos(CW+off_x, 2*(CH+off_y), 0);
  ssd_lay2->DisplayDet(2, 6);
  ssd_lay2->SetName("SSD 2");
  ssd_lay2->SetRnrFrame(rnrFrame);
  ssd_lay2->SetWColor(wcol);
  gReve->AddRenderElement(ssd_lay2);

  gReve->EnableRedraw();
  TGLViewer * v = (TGLViewer *)gPad->GetViewer3D();
  v->SetCurrentCamera(TGLViewer::kCameraOrthoXOY);
}