Responsible for arranging the GL viewers and providing related functionality. More...

#include <SplitGLView.h>

Inheritance diagram for SplitGLView:

Public Types
enum	EMenuCommands { kGLPerspYOZ , kGLPerspXOZ , kGLPerspXOY , kGLXOY , kGLXOZ , kGLZOY , kGLOrthoRotate , kGLOrthoDolly , kGLStereo , kSceneUpdate , kSceneUpdateAll , kShowScale , kSaveGeometryExtract }
	Which menu command was selected? More...

Public Member Functions
	SplitGLView ()
	constructor.

virtual	~SplitGLView ()
	destructor.

void	itemClicked (TGListTreeItem *item, Int_t btn, Int_t x, Int_t y=43)
	handler for clicks inside GL viewer.

void	handleMenu (Int_t menuCommand)
	menu item handler

void	onClicked (TObject *obj)
	make current viewer active & show name of obj in status bar.

void	onMouseOver (TGLPhysicalShape *shape)
	show name of shape in status bar.

void	updateCamera (int cameraAction)
	change camera type, given one of EMenuCommands.

void	toggleOrthoRotate ()
	toggle wether the active viewer may be rotated (not that useful for projections).

void	toggleOrthoDolly ()
	Toggle state of the 'Ortho allow dolly' menu entry.

void	toggleStereo ()
	Toggle stereo viewing for perspective viewer.

void	toggleShowScale ()
	Toggle visibility of axes for projections.

TEveProjectionManager *	getRPhiMgr () const
	return R-Phi projection manager.

TEveProjectionManager *	getRhoZMgr () const
	return Rho-Z projection manager.

TGLEmbeddedViewer *	getActiveGLViewer ()
	return TGLEmbeddedViewer that is active right now.

InfoWidget *	getInfoWidget () const
	text-based info viewer.

Private Member Functions
void	setActiveViewer (TGLEmbeddedViewer *v)
	set m_activeViewer and update UI accordingly.

Private Attributes
TGLEmbeddedViewer *	m_glViewer [3]
	GL viewers.

TEveWindow *	m_window [3]
	corresponding windows

int	m_activeViewer
	selected viewer/window, or -1.

TEveProjectionManager *	m_rphiManager
	R-Phi projection.

TEveProjectionManager *	m_rhozManager
	Rho-Z projection.

TGPopupMenu *	m_cameraMenu
	'Camera' popup menu

TGPopupMenu *	m_sceneMenu
	'Scene' popup menu

TGStatusBar *	m_statusBar
	status bar

InfoWidget *	m_infoWidget
	text-based info viewer.

Detailed Description

Responsible for arranging the GL viewers and providing related functionality.

Adapted from alice_esd_split.C example.

Definition at line 30 of file SplitGLView.h.

Member Enumeration Documentation

◆ EMenuCommands

enum EMenuCommands

Which menu command was selected?

Definition at line 67 of file SplitGLView.h.

                       {
      kGLPerspYOZ, kGLPerspXOZ, kGLPerspXOY, kGLXOY,
      kGLXOZ, kGLZOY, kGLOrthoRotate, kGLOrthoDolly, kGLStereo,
      kSceneUpdate, kSceneUpdateAll, kShowScale, kSaveGeometryExtract
    };

Constructor & Destructor Documentation

◆ SplitGLView()

SplitGLView ( )

explicit

constructor.

Definition at line 43 of file SplitGLView.cc.

                         :
  m_activeViewer(-1),
  m_infoWidget(nullptr)
{
  const char* projectionName[3] = { "3D", "Rho/Z", "R/Phi" };
  TGLViewer::ECameraType cameraType[3] = { TGLViewer::kCameraPerspXOZ, TGLViewer::kCameraOrthoXOY, TGLViewer::kCameraOrthoXOY };
 
  TEveWindowSlot* slot = TEveWindow::CreateWindowMainFrame();
  TEveWindowPack* pack = slot->MakePack();
  pack->SetVertical();
  pack->SetShowTitleBar(kFALSE);
 
  TEveWindowSlot* viewerslots[3];
  auto pack1 = pack->NewSlot()->MakePack();
  pack1->SetHorizontal();
  pack1->SetShowTitleBar(kFALSE);
  viewerslots[0] = pack1->NewSlotWithWeight(0.7);
  TEveWindowSlot* infoslot = pack1->NewSlotWithWeight(0.3);
 
  auto pack2 = pack->NewSlot()->MakePack();
  pack2->SetHorizontal();
  pack2->SetShowTitleBar(kFALSE);
  viewerslots[1] = pack2->NewSlot();
  viewerslots[2] = pack2->NewSlot();
 
 
  //0: 3d, 1: rhoz, 2: rphi
  for (int iFrame = 0; iFrame < 3; iFrame++) {
    TEveViewer* viewer = new TEveViewer(TString::Format("%s viewer", projectionName[iFrame]));
    m_glViewer[iFrame] = viewer->SpawnGLEmbeddedViewer();
    viewerslots[iFrame]->ReplaceWindow(viewer);
    viewerslots[iFrame] = nullptr; // invalid after ReplaceWindow()
 
    viewer->SetShowTitleBar(kFALSE); //might want to show these?
    m_window[iFrame] = viewer;
 
    m_glViewer[iFrame]->SetCurrentCamera(cameraType[iFrame]);
    //create projection managers
    TEveProjectionManager* projectionMgr = 0;
    if (iFrame == 1) {
      m_rhozManager = new TEveProjectionManager(TEveProjection::kPT_RhoZ);
      projectionMgr = m_rhozManager;
      m_glViewer[iFrame]->CurrentCamera().Zoom(+300, false, false);
    } else if (iFrame == 2) {
      m_rphiManager = new TEveProjectionManager(TEveProjection::kPT_RPhi);
      projectionMgr = m_rphiManager;
      m_glViewer[iFrame]->CurrentCamera().Zoom(-50, false, false);
    }
 
    // connect signals we are interested in
    m_glViewer[iFrame]->Connect("MouseOver(TGLPhysicalShape*)", "Belle2::SplitGLView", this, "onMouseOver(TGLPhysicalShape*)");
    m_glViewer[iFrame]->Connect("Clicked(TObject*)", "Belle2::SplitGLView", this, "onClicked(TObject*)");
    if (iFrame == 0) {
      viewer->AddScene(gEve->GetGlobalScene());
      viewer->AddScene(gEve->GetEventScene());
    }
    TEveScene* s = 0;
    if (projectionMgr) {
      s = gEve->SpawnNewScene(TString::Format("%s projection", projectionName[iFrame]));
      viewer->AddScene(s);
    }
 
    gEve->GetViewers()->AddElement(viewer);
    if (projectionMgr) {
      s->AddElement(projectionMgr);
      gEve->AddToListTree(projectionMgr, kTRUE);
      TEveProjectionAxes* axes = new TEveProjectionAxes(projectionMgr);
      projectionMgr->AddElement(axes);
    }
  }
 
  m_infoWidget = new InfoWidget(gClient->GetRoot());
 
  TEveWindowFrame* eveFrame = new TEveWindowFrame(m_infoWidget, "DataStore Info");
  infoslot->ReplaceWindow(eveFrame);
  eveFrame->SetShowTitleBar(kFALSE);
  infoslot = nullptr; // invalid after ReplaceWindow()
 
 
  // create the "camera" popup menu
  m_cameraMenu = new TGPopupMenu(gClient->GetDefaultRoot());
  m_cameraMenu->AddEntry("Perspective (Floor X/Z)", kGLPerspXOZ);
  m_cameraMenu->AddEntry("Perspective (Floor Y/Z)", kGLPerspYOZ);
  m_cameraMenu->AddEntry("Perspective (Floor X/Y)", kGLPerspXOY);
  m_cameraMenu->AddEntry("Orthographic (X/Y)", kGLXOY);
  m_cameraMenu->AddEntry("Orthographic (X/Z)", kGLXOZ);
  m_cameraMenu->AddEntry("Orthographic (Z/Y)", kGLZOY);
  m_cameraMenu->AddSeparator();
  m_cameraMenu->AddEntry("Orthographic: Allow Rotating", kGLOrthoRotate);
  m_cameraMenu->AddEntry("Orthographic: Right Click to Dolly", kGLOrthoDolly);
  m_cameraMenu->AddSeparator();
  m_cameraMenu->AddEntry("Perspective: Enable Stereographic 3D (Requires Hardware or stereowrap)", kGLStereo);
 
  m_sceneMenu = new TGPopupMenu(gClient->GetDefaultRoot());
  m_sceneMenu->AddEntry("&Update Current", kSceneUpdate);
  m_sceneMenu->AddEntry("Update &All", kSceneUpdateAll);
  m_sceneMenu->AddSeparator();
  m_sceneMenu->AddEntry("&Show Scale for Projections", kShowScale);
  m_sceneMenu->CheckEntry(kShowScale);
  m_sceneMenu->AddSeparator();
  m_sceneMenu->AddEntry("Save &Geometry Extract", kSaveGeometryExtract);
 
  TGMenuBar* menuBar = gEve->GetBrowser()->GetMenuBar();
  menuBar->AddPopup("&Camera", m_cameraMenu, new TGLayoutHints(kLHintsTop | kLHintsLeft, 0, 4, 0, 0));
  menuBar->AddPopup("&Scene", m_sceneMenu, new TGLayoutHints(kLHintsTop | kLHintsLeft, 0, 4, 0, 0));
 
  // connect menu signals to our menu handler slot
  m_cameraMenu->Connect("Activated(Int_t)", "Belle2::SplitGLView", this, "handleMenu(Int_t)");
  m_sceneMenu->Connect("Activated(Int_t)", "Belle2::SplitGLView", this, "handleMenu(Int_t)");
 
  // use status bar from the browser
  m_statusBar = gEve->GetBrowser()->GetStatusBar();
 
  //needs to come after menu
  setActiveViewer(m_glViewer[0]);
 
  gEve->GetListTree()->Connect("Clicked(TGListTreeItem*, Int_t, Int_t, Int_t)",
                               "Belle2::SplitGLView", this, "itemClicked(TGListTreeItem*, Int_t, Int_t, Int_t)");
}

◆ ~SplitGLView()

~SplitGLView ( )

virtual

destructor.

Definition at line 163 of file SplitGLView.cc.

{
  // Clean up main frame...
  for (int i = 0; i < 3; i++) {
    delete m_glViewer[i];
  }
  delete m_cameraMenu;
  delete m_sceneMenu;
  delete m_infoWidget;
}

Member Function Documentation

◆ getActiveGLViewer()

TGLEmbeddedViewer * getActiveGLViewer ( )

return TGLEmbeddedViewer that is active right now.

Definition at line 297 of file SplitGLView.cc.

{
  const TEveWindow* currentWindow = gEve->GetWindowManager()->GetCurrentWindow();
  if (m_activeViewer < 0 or m_window[m_activeViewer] != currentWindow) {
    //check if some other viewer was selected
    for (int i = 0; i < 3; i++) {
      if (m_window[i] == currentWindow) {
        m_activeViewer = i;
      }
    }
  }
  if (m_activeViewer < 0)
    return NULL;
 
  return m_glViewer[m_activeViewer];
}

◆ getInfoWidget()

InfoWidget * getInfoWidget ( ) const

inline

text-based info viewer.

Definition at line 64 of file SplitGLView.h.

64{ return m_infoWidget; }

◆ getRhoZMgr()

TEveProjectionManager * getRhoZMgr ( ) const

inline

return Rho-Z projection manager.

Definition at line 60 of file SplitGLView.h.

60{ return m_rhozManager; }

◆ getRPhiMgr()

TEveProjectionManager * getRPhiMgr ( ) const

inline

return R-Phi projection manager.

Definition at line 58 of file SplitGLView.h.

58{ return m_rphiManager; }

◆ handleMenu()

void handleMenu ( Int_t menuCommand )

menu item handler

Definition at line 207 of file SplitGLView.cc.

{
  // Handle menu items.
 
  switch (menuCommand) {
    case kGLPerspYOZ:
    case kGLPerspXOZ:
    case kGLPerspXOY:
    case kGLXOY:
    case kGLXOZ:
    case kGLZOY:
      updateCamera(menuCommand);
      break;
    case kGLOrthoRotate:
      toggleOrthoRotate();
      break;
    case kGLOrthoDolly:
      toggleOrthoDolly();
      break;
 
    case kGLStereo:
      toggleStereo();
      break;
 
    case kSceneUpdate:
      if (getActiveGLViewer())
        getActiveGLViewer()->UpdateScene();
      break;
 
    case kSceneUpdateAll:
      for (int i = 0; i < 3; i++)
        m_glViewer[i]->UpdateScene();
      break;
 
    case kShowScale:
      toggleShowScale();
      break;
 
    case kSaveGeometryExtract:
      EveGeometry::saveExtract();
      break;
 
    default:
      break;
  }
}

◆ itemClicked()

void itemClicked	(	TGListTreeItem *	item,
		Int_t	btn,
		Int_t	x,
		Int_t	y = `43`
	)

handler for clicks inside GL viewer.

Definition at line 413 of file SplitGLView.cc.

{
  // Item has been clicked, based on mouse button do:
 
  static const TEveException eh("SplitGLView::itemClicked ");
  TEveElement* re = static_cast<TEveElement*>(item->GetUserData());
  if (re == 0) return;
  TObject* obj = re->GetObject(eh);
  if (obj->InheritsFrom("TEveViewer")) {
    TGLViewer* v = static_cast<TEveViewer*>(obj)->GetGLViewer();
    //v->Activated();
    if (v->InheritsFrom("TGLEmbeddedViewer")) {
      TGLEmbeddedViewer* ev = (TGLEmbeddedViewer*)v;
      gVirtualX->SetInputFocus(ev->GetGLWidget()->GetId());
    }
  }
}

◆ onClicked()

void onClicked ( TObject * obj )

make current viewer active & show name of obj in status bar.

Definition at line 254 of file SplitGLView.cc.

{
  // Handle click events in GL viewer
 
  if (obj) {
    m_statusBar->SetText(Form("User clicked on: \"%s\"", obj->GetName()), 1);
 
    TEveElement* elem = dynamic_cast<TEveElement*>(obj);
    if (TEveProjected* projected = dynamic_cast<TEveProjected*>(obj)) {
      elem = dynamic_cast<TEveElement*>(projected->GetProjectable());
    }
    if (!elem)
      return;
 
    TGListTreeItem* eventItem = gEve->GetListTree()->FindItemByPathname("Event");
    TGListTreeItem* item = gEve->GetListTree()->FindItemByObj(eventItem, elem);
    if (item) {
      //focus Eve tab
      gEve->GetBrowser()->GetTabLeft()->SetTab("Eve");
 
      //open all parent nodes
      TGListTreeItem* parent = item;
      while ((parent = parent->GetParent()) != nullptr)
        gEve->GetListTree()->OpenItem(parent);
 
      //scroll to clicked item
      gEve->GetListTree()->AdjustPosition(item);
    }
  } else {
    m_statusBar->SetText("", 1);
  }
 
 
  // change the active GL viewer to the one who emitted the signal
  TGLEmbeddedViewer* sender = dynamic_cast<TGLEmbeddedViewer*>(static_cast<TQObject*>(gTQSender));
 
  if (!sender) {
    B2WARNING("onClicked() signal not from a TGLEmbeddedViewer?");
    return;
  }
  setActiveViewer(sender);
}

◆ onMouseOver()

void onMouseOver ( TGLPhysicalShape * shape )

show name of shape in status bar.

Definition at line 354 of file SplitGLView.cc.

{
  // Slot used to handle "onMouseOver" signal coming from any GL viewer.
  // We receive a pointer on the physical shape in which the mouse cursor is.
 
  // display informations on the physical shape in the status bar
  if (shape && shape->GetLogical() && shape->GetLogical()->GetExternal())
    m_statusBar->SetText(Form("Mouse Over: \"%s\"",
                              shape->GetLogical()->GetExternal()->GetName()), 0);
  else
    m_statusBar->SetText("", 0);
}

◆ setActiveViewer()

void setActiveViewer ( TGLEmbeddedViewer * v )

private

set m_activeViewer and update UI accordingly.

Definition at line 314 of file SplitGLView.cc.

{
  bool found = false;
  for (int i = 0; i < 3; i++) {
    if (m_glViewer[i] == v) {
      m_activeViewer = i;
      found = true;
    }
  }
  if (!found) {
    B2WARNING("setActiveViewer(): viewer not found!");
    m_activeViewer = -1;
  }
  if (m_activeViewer >= 0) {
    //activate corresponding window
    m_window[m_activeViewer]->MakeCurrent();
 
    // update menu entries to match active viewer's options
    if (getActiveGLViewer()->GetOrthoXOYCamera()->GetDollyToZoom() &&
        getActiveGLViewer()->GetOrthoXOZCamera()->GetDollyToZoom() &&
        getActiveGLViewer()->GetOrthoZOYCamera()->GetDollyToZoom())
      m_cameraMenu->UnCheckEntry(kGLOrthoDolly);
    else
      m_cameraMenu->CheckEntry(kGLOrthoDolly);
 
    if (getActiveGLViewer()->GetOrthoXOYCamera()->GetEnableRotate() &&
        getActiveGLViewer()->GetOrthoXOZCamera()->GetEnableRotate() &&
        getActiveGLViewer()->GetOrthoZOYCamera()->GetEnableRotate())
      m_cameraMenu->CheckEntry(kGLOrthoRotate);
    else
      m_cameraMenu->UnCheckEntry(kGLOrthoRotate);
 
    if (getActiveGLViewer()->GetStereo())
      m_cameraMenu->CheckEntry(kGLStereo);
    else
      m_cameraMenu->UnCheckEntry(kGLStereo);
  }
}

◆ toggleOrthoDolly()

void toggleOrthoDolly ( )

Toggle state of the 'Ortho allow dolly' menu entry.

Definition at line 378 of file SplitGLView.cc.

{
  Bool_t state = !toggleMenuEntry(m_cameraMenu, kGLOrthoDolly);
  if (getActiveGLViewer()) {
    getActiveGLViewer()->GetOrthoXOYCamera()->SetDollyToZoom(state);
    getActiveGLViewer()->GetOrthoXOZCamera()->SetDollyToZoom(state);
    getActiveGLViewer()->GetOrthoZOYCamera()->SetDollyToZoom(state);
  }
}

◆ toggleOrthoRotate()

void toggleOrthoRotate ( )

toggle wether the active viewer may be rotated (not that useful for projections).

Definition at line 368 of file SplitGLView.cc.

{
  Bool_t state = toggleMenuEntry(m_cameraMenu, kGLOrthoRotate);
  if (getActiveGLViewer()) {
    getActiveGLViewer()->GetOrthoXOYCamera()->SetEnableRotate(state);
    getActiveGLViewer()->GetOrthoXOZCamera()->SetEnableRotate(state);
    getActiveGLViewer()->GetOrthoZOYCamera()->SetEnableRotate(state);
  }
}

◆ toggleShowScale()

void toggleShowScale ( )

Toggle visibility of axes for projections.

Definition at line 396 of file SplitGLView.cc.

{
  bool state = toggleMenuEntry(m_sceneMenu, kShowScale);
 
  std::vector<TEveProjectionManager*> projections = {m_rhozManager, m_rphiManager};
  for (auto mgr : projections) {
    TEveElement::List_ci end_it = mgr->EndChildren();
    for (TEveElement::List_i it = mgr->BeginChildren(); it != end_it; ++it) {
      TEveProjectionAxes* a = dynamic_cast<TEveProjectionAxes*>(*it);
      if (a) {
        a->SetRnrSelf(state);
      }
    }
  }
  gEve->Redraw3D(false); //do not reset camera when redrawing
}

◆ toggleStereo()

void toggleStereo ( )

Toggle stereo viewing for perspective viewer.

Definition at line 388 of file SplitGLView.cc.

{
  if (!getActiveGLViewer())
    return;
 
  getActiveGLViewer()->SetStereo(toggleMenuEntry(m_cameraMenu, kGLStereo));
}

◆ updateCamera()

void updateCamera ( int cameraAction )

change camera type, given one of EMenuCommands.

Definition at line 174 of file SplitGLView.cc.

{
  TGLEmbeddedViewer* viewer = getActiveGLViewer();
  if (!viewer)
    return;
 
  TGLViewer::ECameraType cameraType;
  switch (cameraAction) {
    case kGLPerspYOZ:
      cameraType = TGLViewer::kCameraPerspYOZ;
      break;
    case kGLPerspXOZ:
      cameraType = TGLViewer::kCameraPerspXOZ;
      break;
    case kGLPerspXOY:
      cameraType = TGLViewer::kCameraPerspXOY;
      break;
    case kGLXOY:
      cameraType = TGLViewer::kCameraOrthoXOY;
      break;
    case kGLXOZ:
      cameraType = TGLViewer::kCameraOrthoXOZ;
      break;
    case kGLZOY:
      cameraType = TGLViewer::kCameraOrthoZOY;
      break;
    default:
      B2ERROR("unknown camera action " << cameraAction);
      return;
  }
  viewer->SetCurrentCamera(cameraType);
}

Member Data Documentation

◆ m_activeViewer

int m_activeViewer

private

selected viewer/window, or -1.

Definition at line 79 of file SplitGLView.h.

◆ m_cameraMenu

TGPopupMenu* m_cameraMenu

private

'Camera' popup menu

Definition at line 83 of file SplitGLView.h.

◆ m_glViewer

TGLEmbeddedViewer* m_glViewer[3]

private

GL viewers.

Definition at line 77 of file SplitGLView.h.

◆ m_infoWidget

InfoWidget* m_infoWidget

private

text-based info viewer.

Definition at line 88 of file SplitGLView.h.

◆ m_rhozManager

TEveProjectionManager* m_rhozManager

private

Rho-Z projection.

Definition at line 81 of file SplitGLView.h.

◆ m_rphiManager

TEveProjectionManager* m_rphiManager

private

R-Phi projection.

Definition at line 80 of file SplitGLView.h.

◆ m_sceneMenu

TGPopupMenu* m_sceneMenu

private

'Scene' popup menu

Definition at line 84 of file SplitGLView.h.

◆ m_statusBar

TGStatusBar* m_statusBar

private

status bar

Definition at line 85 of file SplitGLView.h.

◆ m_window

TEveWindow* m_window[3]

private

corresponding windows

Definition at line 78 of file SplitGLView.h.

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

display/include/SplitGLView.h
display/src/SplitGLView.cc

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ EMenuCommands

Constructor & Destructor Documentation

◆ SplitGLView()

◆ ~SplitGLView()

Member Function Documentation

◆ getActiveGLViewer()

◆ getInfoWidget()

◆ getRhoZMgr()

◆ getRPhiMgr()

◆ handleMenu()

◆ itemClicked()

◆ onClicked()

◆ onMouseOver()

◆ setActiveViewer()

◆ toggleOrthoDolly()

◆ toggleOrthoRotate()

◆ toggleShowScale()

◆ toggleStereo()

◆ updateCamera()

Member Data Documentation

◆ m_activeViewer

◆ m_cameraMenu

◆ m_glViewer

◆ m_infoWidget

◆ m_rhozManager

◆ m_rphiManager

◆ m_sceneMenu

◆ m_statusBar

◆ m_window