EDep::TEventChangeManager Class Reference

#include <TEventChangeManager.hxx>

Inheritance diagram for EDep::TEventChangeManager:

Public Member Functions
	TEventChangeManager ()
virtual	~TEventChangeManager ()
void	ChangeEvent (int change=1)
void	AddNewEventHandler (EDep::TVEventChangeHandler *handler)
void	AddUpdateHandler (EDep::TVEventChangeHandler *handler)
void	SetShowGeometry (bool f)
	Set the flag to show (or not show) the geometry. More...
bool	GetShowGeometry () const
void	AddVolumeToShow (const std::string &name)
	Add the name of a volume to be drawn. More...
void	ClearVolumesToShow ()
	Clear the list of volumes to be shown. More...
void	SetEventSource (TFile *source)
TFile *	GetEventSource ()

Private Types
typedef std::vector< EDep::TVEventChangeHandler * >	Handlers

Private Member Functions
void	NewEvent ()
void	UpdateEvent ()
	ClassDef (TEventChangeManager, 0)

Private Attributes
TFile *	fEventSource
	The input source of events. More...
Handlers	fUpdateHandlers
	The event update handlers. More...
Handlers	fNewEventHandlers
	The new event handlers. More...
bool	fShowGeometry
	Flag to determine if the geometry will be drawn. More...
std::vector< std::string >	fVolumesToShow
	A collection of volume names to be shown if the geometry is being drawn. More...

Detailed Description

A class to handle a new event becoming available to the event display. There is a single instance of this class owned by TEventDisplay. This must be created after the GUI has been initialized.

Definition at line 16 of file TEventChangeManager.hxx.

Member Typedef Documentation

typedef std::vector<EDep::TVEventChangeHandler*> EDep::TEventChangeManager::Handlers

private

Definition at line 71 of file TEventChangeManager.hxx.

Constructor & Destructor Documentation

EDep::TEventChangeManager::TEventChangeManager

(

)

Definition at line 77 of file TEventChangeManager.cxx.

                                             {
    TGButton* button = EDep::TEventDisplay::Get().GUI().GetNextEventButton();
    if (button) {
        button->Connect("Clicked()",
                        "EDep::TEventChangeManager", 
                        this,
                        "ChangeEvent(=1)");
    }

    button = EDep::TEventDisplay::Get().GUI().GetDrawEventButton();
    if (button) {
        button->Connect("Clicked()",
                        "EDep::TEventChangeManager", 
                        this,
                        "ChangeEvent(=0)");
    }

    button = EDep::TEventDisplay::Get().GUI().GetPrevEventButton();
    if (button) {
        button->Connect("Clicked()",
                        "EDep::TEventChangeManager", 
                        this,
                        "ChangeEvent(=-1)");
    }

    ClearVolumesToShow();
}

EDep::TEventChangeManager::~TEventChangeManager ( )

virtual

Definition at line 105 of file TEventChangeManager.cxx.

{}

Member Function Documentation

void EDep::TEventChangeManager::AddNewEventHandler

(

EDep::TVEventChangeHandler *

handler

)

Add a handler (taking ownership of the handler) for when the event changes (e.g. a new event is read). These handlers are for "once-per-event" actions and are executed by the NewEvent() method.

Definition at line 139 of file TEventChangeManager.cxx.

                                       {
    fNewEventHandlers.push_back(handler);
}

void EDep::TEventChangeManager::AddUpdateHandler

(

EDep::TVEventChangeHandler *

handler

)

Add a handler (taking ownership of the handler) for when the event needs to be redrawn. These handlers are executed by the UpdateEvent() method.

Definition at line 144 of file TEventChangeManager.cxx.

                                       {
    fUpdateHandlers.push_back(handler);
}

void EDep::TEventChangeManager::AddVolumeToShow ( const std::string &  name )

inline

Add the name of a volume to be drawn.

Definition at line 48 of file TEventChangeManager.hxx.

                                                {
        fVolumesToShow.push_back(name);
    }

void EDep::TEventChangeManager::ChangeEvent

(

int

change = 1

)

Trigger an event change. The argument says how many events to read. If it's positive, then it reads forward in the file. If the change is zero, then the current event is just redrawn. This is connected to the GUI buttons.

Definition at line 149 of file TEventChangeManager.cxx.

                                                    {
    std::cout << "Change Event by " << change << " entries" << std::endl;
    if (!GetEventSource()) {
        std::cout << "Event source is not available" << std::endl;
        UpdateEvent();
        return;
    }

    gEDepSimEntryNumber += change;
    if (gEDepSimEntryNumber >= gEDepSimTree->GetEntries()) {
        gEDepSimEntryNumber = gEDepSimTree->GetEntries() - 1;
    }
    if (gEDepSimEntryNumber < 0) gEDepSimEntryNumber = 0;

    if (change != 0) NewEvent(); 

    UpdateEvent();
}

EDep::TEventChangeManager::ClassDef ( TEventChangeManager  , 0    )

private

void EDep::TEventChangeManager::ClearVolumesToShow ( )

inline

Clear the list of volumes to be shown.

Definition at line 53 of file TEventChangeManager.hxx.

                              {
        fVolumesToShow.clear();
    }

TFile* EDep::TEventChangeManager::GetEventSource ( )

inline

Definition at line 24 of file TEventChangeManager.hxx.

{return fEventSource;}

bool EDep::TEventChangeManager::GetShowGeometry ( ) const

inline

Definition at line 45 of file TEventChangeManager.hxx.

{return fShowGeometry;}

void EDep::TEventChangeManager::NewEvent ( )

private

This updates the event display for a new event using the event change handlers. It is used to do once-per-event initializations and does not call UpdateEvent().

Definition at line 168 of file TEventChangeManager.cxx.

                                       {
    std::cout << "New Event" << std::endl;

    gEDepSimTree->GetEntry(gEDepSimEntryNumber);

    // Run through all of the handlers.
    for (Handlers::iterator h = fNewEventHandlers.begin();
         h != fNewEventHandlers.end(); ++h) {
        (*h)->Apply();
    }

}

void EDep::TEventChangeManager::SetEventSource

(

TFile *

source

)

Set or get the event source. When the event source is set, the first event is read.

Definition at line 107 of file TEventChangeManager.cxx.

                                                          {
    if (!source) {
        std::cout << "Invalid event source" << std::endl;
        return;
    }
    fEventSource = source;
    gEDepSimTree = (TTree*) fEventSource->Get("EDepSimEvents");
    if (!gEDepSimTree) {
        std::cout << "Missing the event tree" << std::endl;
        return;
    }
    gEDepSimTree->SetBranchAddress("Event",&gEDepSimEvent);
    gEDepSimEntryNumber = 0;
    gEDepSimTree->GetEntry(gEDepSimEntryNumber);
    
    fEventSource->Get("EDepSimGeometry");
    
    if (GetShowGeometry() && !fVolumesToShow.empty()) {
        TEveElementList* simple = new TEveElementList("simplifiedGeometry");
        PickVolumes visitor(simple);
        visitor.fVolumesToShow.clear();
        visitor.fVolumesToShow.reserve(fVolumesToShow.size());
        std::copy(fVolumesToShow.begin(), fVolumesToShow.end(),
                  std::back_inserter(visitor.fVolumesToShow));
        visitor.Apply();
        gEve->AddGlobalElement(simple);
    }
    
    NewEvent();
    UpdateEvent();
}

void EDep::TEventChangeManager::SetShowGeometry ( bool  f )

inline

Set the flag to show (or not show) the geometry.

Definition at line 44 of file TEventChangeManager.hxx.

{fShowGeometry = f;}

void EDep::TEventChangeManager::UpdateEvent ( )

private

This updates the event display for an event using the event change handlers.

Definition at line 181 of file TEventChangeManager.cxx.

                                          {

    if (!gEDepSimEvent) {
        std::cout << "Invalid event" << std::endl;;
        return;
    }

    // Run through all of the handlers.
    for (Handlers::iterator h = fUpdateHandlers.begin();
         h != fUpdateHandlers.end(); ++h) {
        (*h)->Apply();
    }

    // Make sure EVE is up to date.
    gEve->Redraw3D(kTRUE);
}

Member Data Documentation

TFile* EDep::TEventChangeManager::fEventSource

private

The input source of events.

Definition at line 69 of file TEventChangeManager.hxx.

Handlers EDep::TEventChangeManager::fNewEventHandlers

private

The new event handlers.

Definition at line 77 of file TEventChangeManager.hxx.

bool EDep::TEventChangeManager::fShowGeometry

private

Flag to determine if the geometry will be drawn.

Definition at line 80 of file TEventChangeManager.hxx.

Handlers EDep::TEventChangeManager::fUpdateHandlers

private

The event update handlers.

Definition at line 74 of file TEventChangeManager.hxx.

std::vector<std::string> EDep::TEventChangeManager::fVolumesToShow

private

A collection of volume names to be shown if the geometry is being drawn.

Definition at line 83 of file TEventChangeManager.hxx.

---

The documentation for this class was generated from the following files:

• edep-sim/display/TEventChangeManager.hxx
• edep-sim/display/TEventChangeManager.cxx