#include <G4VViewer.hh>

Inheritance diagram for G4VViewer::SceneTreeScene:

Public Member Functions
	SceneTreeScene (G4VViewer , G4PhysicalVolumeModel )

	~SceneTreeScene ()=default

Public Member Functions inherited from G4PseudoScene
	G4PseudoScene ()=default

virtual	~G4PseudoScene ()=default

void	PreAddSolid (const G4Transform3D &objectTransformation, const G4VisAttributes &visAttributes)

void	PostAddSolid ()

void	AddSolid (const G4Box &solid)

void	AddSolid (const G4Cons &solid)

void	AddSolid (const G4Orb &solid)

void	AddSolid (const G4Para &solid)

void	AddSolid (const G4Sphere &solid)

void	AddSolid (const G4Torus &solid)

void	AddSolid (const G4Trap &solid)

void	AddSolid (const G4Trd &solid)

void	AddSolid (const G4Tubs &solid)

void	AddSolid (const G4Ellipsoid &solid)

void	AddSolid (const G4Polycone &solid)

void	AddSolid (const G4Polyhedra &solid)

void	AddSolid (const G4TessellatedSolid &solid)

void	AddSolid (const G4VSolid &solid)

void	AddCompound (const G4VTrajectory &)

void	AddCompound (const G4VHit &)

void	AddCompound (const G4VDigi &)

void	AddCompound (const G4THitsMap< G4double > &)

void	AddCompound (const G4THitsMap< G4StatDouble > &)

void	AddCompound (const G4Mesh &)

void	BeginPrimitives (const G4Transform3D &)

void	EndPrimitives ()

void	BeginPrimitives2D (const G4Transform3D &)

void	EndPrimitives2D ()

void	AddPrimitive (const G4Polyline &)

void	AddPrimitive (const G4Text &)

void	AddPrimitive (const G4Circle &)

void	AddPrimitive (const G4Square &)

void	AddPrimitive (const G4Polymarker &)

void	AddPrimitive (const G4Polyhedron &)

void	AddPrimitive (const G4Plotter &)

Public Member Functions inherited from G4VGraphicsScene
	G4VGraphicsScene ()

virtual	~G4VGraphicsScene ()

virtual const G4VisExtent &	GetExtent () const

Additional Inherited Members
Protected Attributes inherited from G4PseudoScene
const G4Transform3D *	fpCurrentObjectTransformation = nullptr

const G4VisAttributes *	fpVisAttributes = nullptr

Detailed Description

The scene tree is a tree of G4SceneTreeItem objects (see graphics-reps).
Its root is a data member fSceneTree of all viewers by virtue of G4VViewer inheritance,
G4SceneTreeItem is an aggregate of data members that represent properties of objects in the scene (G4Scene). Its data members are low-level types - G4String, G4VisAttributes and G4AttDef/Value - so that it can be used across categories, avoiding coupling.
The root item has children that represent the models (G4VModel sub-classes) in the scene.
For a G4PhysicalVolumeModel (detector components), its children and children's children, etc., imitate the geometry hierarchy of that model. These descendants are called "touchables".
There may be more than one G4PhysicalVolumeModel, depending how the user creates his/her scene.
The scene tree is reviewed, and updated if necessary, at every pass of G4VSceneHandler::ProcessScene. This is called a "kernel visit".
A kernel visit is triggered by some vis commands (e.g., /vis/viewer/rebuild) and by a viewer if it deems necessary. For example, a kernel visit may not be required for a rotation, zoom, etc., but required for a change from surface to wireframe.
The idea is that the scene tree can be passed to a GUI, the GUI can create a tree widget, and interactions with it raise UI commands such as /vis/scene/activateModel, /vis/set/touchable and /vis/touchable/set/... The viewer decides if this requires a kernel visit, otherwise it must update fSceneTree itself (utilities are provided - G4VViewer::TouchableSetVisibility/Colour).

Definition at line 171 of file G4VViewer.hh.

Constructor & Destructor Documentation

◆ SceneTreeScene()

G4VViewer::SceneTreeScene::SceneTreeScene	(	G4VViewer *	pViewer,
		G4PhysicalVolumeModel *	pPVModel )

Definition at line 295 of file G4VViewer.cc.

: fpViewer (pViewer)
, fpPVModel(pPVModel)
{
  if (fpPVModel == nullptr) {
    G4Exception("G4VViewer::SceneTreeScene::SceneTreeScene", "visman0405", FatalException,
                "G4PhysicalVolumeModel pointer is null");
    return;  // To keep Coverity happy
  }
  
  // Describe the model to an empty scene simply to get the numbers of touchables
  struct : public G4PseudoScene {
    void ProcessVolume(const G4VSolid&) {}
  } counter;
  fpPVModel->DescribeYourselfTo(counter);  // Calls ProcessVolume for every touchable
 
  // Limit the expanded depth to limit the number expanded so as not to swamp the GUI
  G4int expanded = 0;
  for (const auto& dn : fpPVModel->GetNumberOfTouchables()) {
    expanded += dn.second;
    if (fMaximumExpandedDepth < dn.first) fMaximumExpandedDepth = dn.first;
    if (expanded > fMaximumExpanded) break;
  }
 
  // Find appropriate model and its iterator
  const auto& modelID = fpPVModel->GetGlobalDescription();
  auto& modelItems = fpViewer->fSceneTree.AccessChildren();
  fModelIter = modelItems.begin();
  for (; fModelIter != modelItems.end(); ++fModelIter) {
    if (fModelIter->GetModelDescription() == modelID) break;
  }
  if (fModelIter == modelItems.end()) {
    G4Exception("G4VViewer::SceneTreeScene::SceneTreeScene", "visman0406", JustWarning,
                "Model not found");
  }
}

◆ ~SceneTreeScene()

G4VViewer::SceneTreeScene::~SceneTreeScene ( )

default

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SceneTreeScene()

◆ ~SceneTreeScene()