/data/refman/pasoursint/CMSSW_5_3_3/src/Fireworks/FWInterface/src/FWFFService.cc

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#include <iostream>
#include "Fireworks/FWInterface/interface/FWFFService.h"
#include "Fireworks/FWInterface/src/FWFFNavigator.h"
#include "Fireworks/FWInterface/src/FWFFMetadataManager.h"
#include "Fireworks/FWInterface/src/FWFFMetadataUpdateRequest.h"
#include "Fireworks/Core/interface/FWViewManagerManager.h"
#include "Fireworks/Core/interface/Context.h"
#include "Fireworks/Core/interface/FWEventItemsManager.h"
#include "Fireworks/Core/src/CmsShowTaskExecutor.h"
#include "Fireworks/Core/interface/CmsShowMainFrame.h"
#include "Fireworks/Core/interface/FWGUIManager.h"
#include "Fireworks/Core/interface/CSGContinuousAction.h"
#include "Fireworks/Core/interface/FWRecoGeom.h"
#include "Fireworks/Geometry/interface/FWRecoGeometry.h"
#include "Fireworks/Geometry/interface/FWRecoGeometryRecord.h"

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ServiceRegistry/interface/ActivityRegistry.h"

#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/ESTransientHandle.h"
#include "CondFormats/RunInfo/interface/RunInfo.h"
#include "CondFormats/DataRecord/interface/RunSummaryRcd.h"
#include "FWCore/Framework/interface/Run.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/Common/interface/ConditionsInEdm.h"

#include "TROOT.h"
#include "TSystem.h"
#include "TRint.h"
#include "TEveManager.h"
#include "TEveEventManager.h"
#include "TEveTrackPropagator.h"
#include "TGLWidget.h"

#include "TEveBrowser.h"

namespace
{
   class CmsEveMagField : public TEveMagField
   {
   private:
      Float_t fField;
      Float_t fFieldMag;

   public:

      CmsEveMagField() : TEveMagField(), fField(-3.8), fFieldMag(3.8) {}
      virtual ~CmsEveMagField() {}

      // set current
      void SetFieldByCurrent(Float_t avg_current)
      {
         fField    = -3.8 * avg_current / 18160.0;
         fFieldMag = TMath::Abs(fField);
      }

      // get field values
      virtual Float_t GetMaxFieldMag() const
      {
         return fFieldMag;
      }

      virtual TEveVector GetField(Float_t x, Float_t y, Float_t z) const
      {
         static const Float_t barrelFac = 1.2 / 3.8;
         static const Float_t endcapFac = 2.0 / 3.8;

         const Float_t R    = sqrt(x*x+y*y);
         const Float_t absZ = TMath::Abs(z);

         //barrel
         if (absZ < 724.0f)
         {
            //inside solenoid
            if (R < 300.0f) return TEveVector(0, 0, fField);

            // outside solinoid
            if ((R > 461.0f && R < 490.5f) ||
                (R > 534.5f && R < 597.5f) ||
                (R > 637.0f && R < 700.0f))
            {
               return TEveVector(0, 0, -fField*barrelFac);
            }
         } else {
            if ((absZ > 724.0f && absZ < 786.0f) ||
                (absZ > 850.0f && absZ < 910.0f) ||
                (absZ > 975.0f && absZ < 1003.0f))
            {
               const Float_t fac = (z >= 0 ? fField : -fField) * endcapFac / R;
               return TEveVector(x*fac, y*fac, 0);
            }
         }
         return TEveVector(0, 0, 0);
      }
   };
}

//
// constants, enums and typedefs
//

//
// static data member definitions
//

//==============================================================================
// constructors and destructor
//==============================================================================

FWFFService::FWFFService(edm::ParameterSet const&ps, edm::ActivityRegistry& ar) 
   : CmsShowMainBase(),
     m_navigator(new FWFFNavigator(*this)), 
     m_metadataManager(new FWFFMetadataManager()),
     m_context(new fireworks::Context(changeManager(),
                                      selectionManager(),
                                      eiManager(),
                                      colorManager(),
                                      m_metadataManager.get())),
     m_appHelper(ps, ar),
     m_Rint(m_appHelper.app()),
     m_AllowStep(true),
     m_ShowEvent(true),
     m_firstTime(true)
{
   printf("FWFFService::FWFFService CTOR\n");

   setup(m_navigator.get(), m_context.get(), m_metadataManager.get());

   eiManager()->setContext(m_context.get());

   // By default, we look up geometry and configuration in the workarea, then
   // in the release area then in the local directory.  It is also possible to
   // override those locations by using the displayConfigurationFilename and
   // geometryFilename in the parameterset.
   const char *releaseBase = getenv("CMSSW_RELEASE_BASE");
   const char *workarea = getenv("CMSSW_BASE");
   std::string displayConfigRelFilename = "/src/Fireworks/FWInterface/macros/ffw.fwc";
   std::string geometryRelFilename = "/src/Fireworks/FWInterface/data/cmsGeom10.root";

   std::string displayConfigFilename = "ffw.fwc";
   std::string geometryFilename;

   if (releaseBase && access((releaseBase + displayConfigFilename).c_str(), R_OK) == 0)
      displayConfigFilename = releaseBase + displayConfigRelFilename; 
   if (workarea && access((workarea + displayConfigRelFilename).c_str(), R_OK) == 0)
      displayConfigFilename = workarea + displayConfigRelFilename;   

   if (releaseBase && access((releaseBase + geometryRelFilename).c_str(), R_OK) == 0)
      geometryFilename = releaseBase + geometryRelFilename;
   if (workarea && access((workarea + geometryRelFilename).c_str(), R_OK) == 0)
      geometryFilename = workarea + geometryRelFilename;

   displayConfigFilename = ps.getUntrackedParameter<std::string>("diplayConfigFilename", displayConfigFilename);
   geometryFilename = ps.getUntrackedParameter<std::string>("geometryFilename", geometryFilename);

   setGeometryFilename(geometryFilename);
   setConfigFilename(displayConfigFilename);

   CmsShowTaskExecutor::TaskFunctor f;

   if (!geometryFilename.empty())
   {
      f=boost::bind(&CmsShowMainBase::loadGeometry,this);
      startupTasks()->addTask(f);
   }

   m_MagField = new CmsEveMagField();

   // ----------------------------------------------------------------

   ar.watchPostBeginJob(this, &FWFFService::postBeginJob);
   ar.watchPostEndJob(this, &FWFFService::postEndJob);

   ar.watchPostBeginRun(this, &FWFFService::postBeginRun);

   ar.watchPostProcessEvent(this, &FWFFService::postProcessEvent);
}

FWFFService::~FWFFService()
{
   printf("FWFFService::~FWFFService DTOR\n");

   delete m_MagField;
}


//==============================================================================
// Service watchers
//==============================================================================

void
FWFFService::postBeginJob()
{
   printf("FWFFService::postBeginJob\n");
   // We need to enter the GUI loop in order to 
   // have all the callbacks executed. The last callback will
   // be responsible for returning the control to CMSSW. 
   assert(m_Rint);
   CmsShowTaskExecutor::TaskFunctor f;
   f=boost::bind(&TApplication::Terminate, m_Rint, 0);
   startupTasks()->addTask(f);
   // FIXME: do we really need to delay tasks like this?
   startupTasks()->startDoingTasks(); 
   m_Rint->Run(kTRUE);
   // Show the GUI ...
   gSystem->ProcessEvents();
}

void 
FWFFService::postEndJob()
{
   printf("FWFFService::postEndJob\n");

   TEveManager::Terminate();
}

void
FWFFService::checkPosition()
{
   if (loop() && isPlaying())
      return;
  
   guiManager()->getMainFrame()->enableNavigatorControls();

   if (m_navigator->isFirstEvent())
      guiManager()->disablePrevious();

   if (m_navigator->isLastEvent())
   {
      guiManager()->disableNext();
      // force enable play events action in --port mode
      if (!guiManager()->playEventsAction()->isEnabled())
         guiManager()->playEventsAction()->enable();
   }
}
//------------------------------------------------------------------------------

void
FWFFService::postBeginRun(const edm::Run& iRun, const edm::EventSetup& iSetup)
{
   // If the geometry was not picked up from a file, we try to get it from the
   // EventSetup!
   // FIXME: we need to check we execute only once because the view managers
   //        depend on geometry and they cannot be initialised more than once.
   //        This should actually be cleaned up so that the various view manager
   //        don't care about geometry.
   // FIXME: we should actually be able to update the geometry when requested.
   //        this is not possible at the moment.
   if (m_firstTime == true)
   {
      if (m_context->getGeom() == 0)
      {
         guiManager()->updateStatus("Loading geometry...");
         edm::ESTransientHandle<FWRecoGeometry> geoh;
         iSetup.get<FWRecoGeometryRecord>().get(geoh);
         getGeom().initMap(geoh.product()->idToName);
         m_context->setGeom(&(getGeom()));
      }

      setupViewManagers();
      setupConfiguration();
      setupActions();
      m_firstTime = false;
   }

   float current = 18160.0f;

   edm::Handle<edm::ConditionsInRunBlock> runCond;
   bool res = iRun.getByType(runCond);
   //bool res = run.getByLabel("conditionsInEdm", runCond, "", "");
   if (res && runCond.isValid())
   {
      printf("Got current from conds in edm %f\n", runCond->BAvgCurrent);
      current = runCond->BAvgCurrent;
   }
   else
   {
      printf("Could not extract run-conditions get-result=%d, is-valid=%d\n", res, runCond.isValid());

      edm::ESHandle<RunInfo> sum;
      iSetup.get<RunInfoRcd>().get(sum);

      current = sum->m_avg_current;
      printf("Got current from RunInfoRcd %f\n", sum->m_avg_current);
   }

   static_cast<CmsEveMagField*>(m_MagField)->SetFieldByCurrent(current);
}

//------------------------------------------------------------------------------
void 
FWFFService::postProcessEvent(const edm::Event &event, const edm::EventSetup&es)
{
   printf("FWFFService::postProcessEvent: Starting GUI loop.\n");

   m_metadataManager->update(new FWFFMetadataUpdateRequest(event));
   m_navigator->setCurrentEvent(&event);
   checkPosition();
   draw();
   m_Rint->Run(kTRUE);
}

//------------------------------------------------------------------------------

void 
FWFFService::display(const std::string& info)
{
   // Display whatever was registered so far, wait until user presses
   // the "Step" button.

   if (m_AllowStep)
   {
      gEve->Redraw3D();
      m_Rint->Run(kTRUE);
   }
}

//==============================================================================
// Getters for cleints
//==============================================================================

TEveMagField* 
FWFFService::getMagField()
{
   return m_MagField;
}

void 
FWFFService::setupFieldForPropagator(TEveTrackPropagator* prop)
{
   prop->SetMagFieldObj(m_MagField, kFALSE);
}

void 
FWFFService::quit()
{
   gSystem->ExitLoop();
   printf("FWFFService exiting on user request.\n");

   // Throwing exception here is bad because:
   //   a) it does not work when in a "debug step";
   //   b) does not restore terminal state.
   // So we do exit instead for now.
   // throw cms::Exception("UserTerminationRequest");
   gSystem->Exit(0);
}