G4RayTracerViewer Class Reference

#include <G4RayTracerViewer.hh>

Inheritance diagram for G4RayTracerViewer:

Public Member Functions
	G4RayTracerViewer (G4VSceneHandler &, const G4String &name, G4TheRayTracer *=0)
virtual	~G4RayTracerViewer ()
void	SetView ()
void	ClearView ()
void	DrawView ()
G4TheRayTracer *	GetTracer ()
Public Member Functions inherited from G4VViewer
	G4VViewer (G4VSceneHandler &, G4int id, const G4String &name="")
virtual	~G4VViewer ()
virtual void	Initialise ()
virtual void	ResetView ()
void	RefreshView ()
virtual void	ShowView ()
virtual void	FinishView ()
const G4String &	GetName () const
const G4String &	GetShortName () const
void	SetName (const G4String &)
G4int	GetViewId () const
G4VSceneHandler *	GetSceneHandler () const
const G4ViewParameters &	GetViewParameters () const
const G4ViewParameters &	GetDefaultViewParameters () const
virtual const std::vector < G4ModelingParameters::VisAttributesModifier > *	GetPrivateVisAttributesModifiers () const
void	SetViewParameters (const G4ViewParameters &vp)
void	SetDefaultViewParameters (const G4ViewParameters &vp)
const G4VisAttributes *	GetApplicableVisAttributes (const G4VisAttributes *) const
void	SetNeedKernelVisit (G4bool need)
void	NeedKernelVisit ()
void	ProcessView ()

Protected Attributes
G4int	fFileCount
G4TheRayTracer *	theTracer
Protected Attributes inherited from G4VViewer
G4VSceneHandler &	fSceneHandler
G4int	fViewId
G4String	fName
G4String	fShortName
G4ViewParameters	fVP
G4ViewParameters	fDefaultVP
G4bool	fNeedKernelVisit

Detailed Description

Definition at line 38 of file G4RayTracerViewer.hh.

Constructor & Destructor Documentation

G4RayTracerViewer::G4RayTracerViewer	(	G4VSceneHandler &	sceneHandler,
		const G4String &	name,
		G4TheRayTracer *	aTracer = 0
	)

Definition at line 45 of file G4RayTracerViewer.cc.

References G4TheRayTracer::SetNColumn().

                         :
  G4VViewer(sceneHandler, sceneHandler.IncrementViewCount(), name),
  fFileCount(0)
{
  theTracer = aTracer;
#ifdef G4MULTITHREADED
  if (!aTracer) theTracer = G4TheMTRayTracer::theInstance;
  if (!theTracer) theTracer = new G4TheMTRayTracer;
#else
  if (!aTracer) theTracer = new G4TheRayTracer;
#endif
  theTracer->SetNColumn(fVP.GetWindowSizeHintX());
  theTracer->SetNRow(fVP.GetWindowSizeHintY());
}

G4RayTracerViewer::~G4RayTracerViewer ( )

virtual

Definition at line 62 of file G4RayTracerViewer.cc.

{}

Member Function Documentation

void G4RayTracerViewer::ClearView ( void  )

virtual

Implements G4VViewer.

Definition at line 94 of file G4RayTracerViewer.cc.

{}

void G4RayTracerViewer::DrawView ( )

virtual

Implements G4VViewer.

Definition at line 96 of file G4RayTracerViewer.cc.

References fFileCount, G4VViewer::fShortName, G4VViewer::fVP, G4cout, G4endl, G4ViewParameters::GetFieldHalfAngle(), python.hepunit::perMillion, G4ViewParameters::SetFieldHalfAngle(), SetView(), theTracer, and G4TheRayTracer::Trace().

{
  // Trap recursive call
  static G4bool called = false;
  if (called) return;
  called = true;

  if (fVP.GetFieldHalfAngle() == 0.) { // Orthogonal (parallel) projection.
    G4double fieldHalfAngle = perMillion;
    fVP.SetFieldHalfAngle(fieldHalfAngle);
    G4cout << 
      "WARNING: G4RayTracerViewer::DrawView: true orthogonal projection"
      "\n  not yet implemented.  Doing a \"long shot\", i.e., a perspective"
      "\n  projection with a half field angle of "
       << fieldHalfAngle <<
      " radians."
       << G4endl;
    SetView();  // Special graphics system - bypass ProcessView().
    fVP.SetFieldHalfAngle(0.);
  }
  else {
    SetView();  // Special graphics system - bypass ProcessView().
  }
  std::ostringstream filename;
  filename << "g4RayTracer." << fShortName << '_' << fFileCount++ << ".jpeg";
  theTracer->Trace(filename.str());

  // Reset call flag
  called = false;
}

G4TheRayTracer* G4RayTracerViewer::GetTracer ( )

inline

Definition at line 47 of file G4RayTracerViewer.hh.

References theTracer.

Referenced by G4RTMessenger::SetNewValue().

{return theTracer;}

void G4RayTracerViewer::SetView ( )

virtual

Implements G4VViewer.

Definition at line 64 of file G4RayTracerViewer.cc.

References G4VViewer::fSceneHandler, G4VViewer::fVP, G4ViewParameters::GetActualLightpointDirection(), G4ViewParameters::GetBackgroundColour(), G4ViewParameters::GetCameraDistance(), G4ViewParameters::GetCurrentTargetPoint(), G4Scene::GetExtent(), G4VisExtent::GetExtentRadius(), G4ViewParameters::GetFrontHalfHeight(), G4TheRayTracer::GetNColumn(), G4ViewParameters::GetNearDistance(), G4VSceneHandler::GetScene(), G4Scene::GetStandardTargetPoint(), G4ViewParameters::GetUpVector(), G4ViewParameters::GetViewpointDirection(), G4TheRayTracer::SetBackgroundColour(), G4TheRayTracer::SetEyePosition(), G4TheRayTracer::SetLightDirection(), G4TheRayTracer::SetTargetPosition(), G4TheRayTracer::SetUpVector(), theTracer, and HepGeom::BasicVector3D< T >::unit().

Referenced by DrawView().

{
  // Get radius of scene, etc.  (See G4OpenGLViewer::SetView().)
  // Note that this procedure properly takes into account zoom, dolly and pan.
  const G4Point3D& targetPoint
    = fSceneHandler.GetScene()->GetStandardTargetPoint()
    + fVP.GetCurrentTargetPoint();
  G4double radius =  // See G4ViewParameters for following procedure.
    fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
  if(radius<=0.) radius = 1.;
  const G4double cameraDistance = fVP.GetCameraDistance(radius);
  const G4Point3D cameraPosition =
    targetPoint + cameraDistance * fVP.GetViewpointDirection().unit();
  const G4double nearDistance  = fVP.GetNearDistance(cameraDistance,radius);
  const G4double frontHalfHeight = fVP.GetFrontHalfHeight(nearDistance,radius);
  const G4double frontHalfAngle = std::atan(frontHalfHeight / nearDistance);

  // Calculate and set ray tracer parameters.
  theTracer->
    SetViewSpan(200. * frontHalfAngle / theTracer->GetNColumn());
  theTracer->SetTargetPosition(targetPoint);
  theTracer->SetEyePosition(cameraPosition);
  theTracer->SetUpVector(fVP.GetUpVector());
  const G4Vector3D
    actualLightpointDirection(-fVP.GetActualLightpointDirection());
  theTracer->SetLightDirection(actualLightpointDirection);
  theTracer->SetBackgroundColour(fVP.GetBackgroundColour());
}

Field Documentation

G4int G4RayTracerViewer::fFileCount

protected

Definition at line 49 of file G4RayTracerViewer.hh.

Referenced by DrawView().

G4TheRayTracer* G4RayTracerViewer::theTracer

protected

Definition at line 50 of file G4RayTracerViewer.hh.

Referenced by DrawView(), GetTracer(), and SetView().

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

• G4RayTracerViewer.hh
• G4RayTracerViewer.cc