G4VViewer Class Reference

#include <G4VViewer.hh>

Inheritance diagram for G4VViewer:

Collaboration diagram for G4VViewer:

Classes
class	G4Spline

Public Member Functions
	G4VViewer (G4VSceneHandler &, G4int id, const G4String &name="")
virtual	~G4VViewer ()
virtual void	Initialise ()
virtual void	ResetView ()
virtual void	SetView ()=0
virtual void	ClearView ()=0
virtual void	DrawView ()=0
void	RefreshView ()
virtual void	ShowView ()
virtual void	FinishView ()
std::vector< G4ThreeVector >	ComputeFlyThrough (G4Vector3D *)
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 Member Functions
void	SetTouchable (const std::vector< G4PhysicalVolumeModel::G4PhysicalVolumeNodeID > &fullPath)
void	TouchableSetVisibility (const std::vector< G4PhysicalVolumeModel::G4PhysicalVolumeNodeID > &fullPath, G4bool visibility)
void	TouchableSetColour (const std::vector< G4PhysicalVolumeModel::G4PhysicalVolumeNodeID > &fullPath, const G4Colour &)

Protected Attributes
G4VSceneHandler &	fSceneHandler
G4int	fViewId
G4String	fName
G4String	fShortName
G4ViewParameters	fVP
G4ViewParameters	fDefaultVP
G4bool	fNeedKernelVisit

Friends
std::ostream &	operator<< (std::ostream &os, const G4VViewer &v)

Detailed Description

Definition at line 46 of file G4VViewer.hh.

Constructor & Destructor Documentation

G4VViewer::G4VViewer	(	G4VSceneHandler &	sceneHandler,
		G4int	id,
		const G4String &	name = ""
	)

Definition at line 46 of file G4VViewer.cc.

                                             :
fSceneHandler (sceneHandler),
fViewId (id),
//fModified (true),
fNeedKernelVisit (true)
{
  if (name == "") {
    std::ostringstream ost;
    ost << fSceneHandler.GetName () << '-' << fViewId;
    fName = ost.str();
  }
  else {
    fName = name;
  }
  fShortName = fName (0, fName.find (' '));
  fShortName.strip ();

  fVP = G4VisManager::GetInstance()->GetDefaultViewParameters();
  fDefaultVP = fVP;
}

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G4VViewer::~G4VViewer ( )

virtual

Definition at line 68 of file G4VViewer.cc.

                       {
  fSceneHandler.RemoveViewerFromList(this);
}

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Member Function Documentation

virtual void G4VViewer::ClearView ( )

pure virtual

Implemented in G4GMocrenFileViewer, G4DAWNFILEViewer, G4HepRepFileViewer, G4HepRepViewer, G4XXXFileViewer, G4XXXViewer, G4RayTracerViewer, G4VRML2FileViewer, G4VRML1FileViewer, G4XXXSGViewer, G4XXXStoredViewer, and G4VTreeViewer.

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std::vector< G4ThreeVector > G4VViewer::ComputeFlyThrough

(

G4Vector3D *

)

Definition at line 206 of file G4VViewer.cc.

{
    enum CurveType {
        Bezier,
        G4SplineTest};
    
    // Choose a curve type (for testing)
//    int myCurveType = Bezier;

    // number if step points
    int stepPoints = 500;

    
    G4Spline spline;

    
    // At the moment we don't use the aVect parameters, but build it here :
    // Good step points for exampleB5
    spline.AddSplinePoint(G4Vector3D(0,1000,-14000));
    spline.AddSplinePoint(G4Vector3D(0,1000,0));
    spline.AddSplinePoint(G4Vector3D(-4000,1000,4000));

    
    std::vector <G4ThreeVector> viewVect;

//    if(myCurveType == Bezier) {

        
        // Draw the spline
        
        for (int i = 0; i < stepPoints; i++) {
            float t = (float)i / (float)stepPoints;
            G4Vector3D cameraPosition = spline.GetInterpolatedSplinePoint(t);
            //        G4Vector3D targetPoint = spline.GetInterpolatedSplinePoint(t);
            
            //        viewParam->SetViewAndLights(G4ThreeVector (cameraPosition.x(), cameraPosition.y(), cameraPosition.z()));
            //        viewParam->SetCurrentTargetPoint(targetPoint);
            G4cout << "FLY CR("<< i << "):" << cameraPosition << G4endl;
            viewVect.push_back(G4ThreeVector (cameraPosition.x(), cameraPosition.y(), cameraPosition.z()));
        }
        
//    } else if (myCurveType == G4SplineTest) {
        /*
         This method is a inspire from a Bezier curve. The problem of the Bezier curve is that the path does not go straight between two waypoints.
         This method add "stay straight" parameter which could be between 0 and 1 where the pass will follow exactly the line between the waypoints
         Ex : stay straight = 50%
         m1 = 3*(P1+P0)/2
         
         Ex : stay straight = 0%
         m1 = (P1+P0)/2
         
         P1
         /  \
         /    \
         a--x--b
         /  °  °  \
         / °      ° \
         m1           m2
         /              \
         /                \
         /                  \
         /                    \
         P0                     P2
         
         */
//        G4Vector3D a;
//        G4Vector3D b;
//        G4Vector3D m1;
//        G4Vector3D m2;
//        G4Vector3D P0;
//        G4Vector3D P1;
//        G4Vector3D P2;
//        G4double stayStraight = 0;
//        G4double bezierSpeed = 0.4; // Spend 40% time in bezier curve (time between m1-m2 is 40% of time between P0-P1)
//        
//        G4Vector3D firstPoint;
//        G4Vector3D lastPoint;
//        
//        float nbBezierSteps = (stepPoints * bezierSpeed*(1-stayStraight)) * (2./spline.GetNumPoints());
//        float nbFirstSteps = ((stepPoints/2-nbBezierSteps/2) /(1+stayStraight)) * (2./spline.GetNumPoints());
//        
//        // First points
//        firstPoint = spline.GetPoint(0);
//        lastPoint = (firstPoint + spline.GetPoint(1))/2;
//        
//        for( float j=0; j<1; j+= 1/nbFirstSteps) {
//            G4ThreeVector pt = firstPoint + (lastPoint - firstPoint) * j;
//            viewVect.push_back(pt);
//            G4cout << "FLY Bezier A1("<< viewVect.size()<< "):" << pt << G4endl;
//        }
//        
//        for (int i = 0; i < spline.GetNumPoints()-2; i++) {
//            P0 = spline.GetPoint(i);
//            P1 = spline.GetPoint(i+1);
//            P2 = spline.GetPoint(i+2);
//            
//            m1 = P1 - (P1-P0)*(1-stayStraight)/2;
//            m2 = P1 + (P2-P1)*(1-stayStraight)/2;
//            
//            // We have to get straight path from (middile of P0-P1) to (middile of P0-P1 + (dist P0-P1) * stayStraight/2)
//            if (stayStraight >0) {
//                
//                firstPoint = (P0 + P1)/2;
//                lastPoint = (P0 + P1)/2 + (P1-P0)*stayStraight/2;
//                
//                for( float j=0; j<1; j+= 1/(nbFirstSteps*stayStraight)) {
//                    G4ThreeVector pt = firstPoint + (lastPoint - firstPoint)* j;
//                    viewVect.push_back(pt);
//                    G4cout << "FLY Bezier A2("<< viewVect.size()<< "):" << pt << G4endl;
//                }
//            }
//            // Compute Bezier curve
//            for( float delta = 0 ; delta < 1 ; delta += 1/nbBezierSteps)
//            {
//                // The Green Line
//                a = m1 + ( (P1 - m1) * delta );
//                b = P1 + ( (m2 - P1) * delta );
//                
//                // Final point
//                G4ThreeVector pt = a + ((b-a) * delta );
//                viewVect.push_back(pt);
//                G4cout << "FLY Bezier("<< viewVect.size()<< "):" << pt << G4endl;
//            }
//            
//            // We have to get straight path
//            if (stayStraight >0) {
//                firstPoint = (P1 + P2)/2 - (P2-P1)*stayStraight/2;
//                lastPoint = (P1 + P2)/2;
//                
//                for( float j=0; j<1; j+= 1/(nbFirstSteps*stayStraight)) {
//                    G4ThreeVector pt = firstPoint + (lastPoint - firstPoint)* j;
//                    viewVect.push_back(pt);
//                    G4cout << "FLY Bezier B1("<< viewVect.size()<< "):" << pt << G4endl;
//                }
//            }
//        }
//        
//        // last points
//        firstPoint = spline.GetPoint(spline.GetNumPoints()-2);
//        lastPoint = spline.GetPoint(spline.GetNumPoints()-1);
//        for( float j=1; j>0; j-= 1/nbFirstSteps) {
//            G4ThreeVector pt = lastPoint - ((lastPoint-firstPoint)*((1-stayStraight)/2) * j );
//            viewVect.push_back(pt);
//            G4cout << "FLY Bezier B2("<< viewVect.size()<< "):" << pt << G4endl;
//        }
//    }
    return viewVect;
}

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virtual void G4VViewer::DrawView ( )

pure virtual

Implemented in G4GMocrenFileViewer, G4DAWNFILEViewer, G4HepRepFileViewer, G4HepRepViewer, G4XXXFileViewer, G4XXXViewer, G4RayTracerViewer, G4VRML2FileViewer, G4VRML1FileViewer, G4XXXSGViewer, G4XXXStoredViewer, and G4VTreeViewer.

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void G4VViewer::FinishView ( void  )

virtual

Reimplemented in G4HepRepViewer, G4VRML2FileViewer, and G4VRML1FileViewer.

Definition at line 101 of file G4VViewer.cc.

{}

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const G4VisAttributes* G4VViewer::GetApplicableVisAttributes

(

const G4VisAttributes *

)

const

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const G4ViewParameters& G4VViewer::GetDefaultViewParameters

(

)

const

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const G4String& G4VViewer::GetName

(

)

const

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virtual const std::vector<G4ModelingParameters::VisAttributesModifier>* G4VViewer::GetPrivateVisAttributesModifiers ( ) const

virtual

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G4VSceneHandler* G4VViewer::GetSceneHandler

(

)

const

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const G4String& G4VViewer::GetShortName

(

)

const

G4int G4VViewer::GetViewId

(

)

const

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const G4ViewParameters& G4VViewer::GetViewParameters

(

)

const

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virtual void G4VViewer::Initialise ( )

virtual

void G4VViewer::NeedKernelVisit

(

)

Definition at line 78 of file G4VViewer.cc.

                                 {

  fNeedKernelVisit = true;

  // At one time I thought we'd better notify all viewers.  But I guess
  // each viewer can take care of itself, so the following code is
  // redundant (but keep it commented out for now).   (John Allison)
  // Notify all viewers that a kernel visit is required.
  // const G4ViewerList& viewerList = fSceneHandler.GetViewerList ();
  // G4ViewerListConstIterator i;
  // for (i = viewerList.begin(); i != viewerList.end(); i++) {
  //   (*i) -> SetNeedKernelVisit ();
  // }
  // ??...but, there's a problem in OpenGL Stored which seems to
  // require *all* viewers to revisit the kernel, so...
  //  const G4ViewerList& viewerList = fSceneHandler.GetViewerList ();
  //  G4ViewerListConstIterator i;
  //  for (i = viewerList.begin(); i != viewerList.end(); i++) {
  //    (*i) -> SetNeedKernelVisit (true);
  //  }
  // Feb 2005 - commented out.  Let's fix OpenGL if necessary.
}

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void G4VViewer::ProcessView

(

)

Definition at line 105 of file G4VViewer.cc.

{
  // If the scene has changed, or if the concrete viewer has decided
  // that it necessary to visit the kernel, perhaps because the view
  // parameters have changed significantly (this should be done in the
  // concrete viewer's DrawView)...
  if (fNeedKernelVisit) {
    // Reset flag.  This must be done before ProcessScene to prevent
    // recursive calls when recomputing transients...
    fNeedKernelVisit = false;
    fSceneHandler.ClearStore ();
    fSceneHandler.ProcessScene ();
  }
}

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void G4VViewer::RefreshView

(

)

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virtual void G4VViewer::ResetView ( )

virtual

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void G4VViewer::SetDefaultViewParameters

(

const G4ViewParameters &

vp

)

void G4VViewer::SetName

(

const G4String &

name

)

Definition at line 72 of file G4VViewer.cc.

                                             {
  fName = name;
  fShortName = fName (0, fName.find (' '));
  fShortName.strip ();
}

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void G4VViewer::SetNeedKernelVisit

(

G4bool

need

)

void G4VViewer::SetTouchable ( const std::vector< G4PhysicalVolumeModel::G4PhysicalVolumeNodeID > &  fullPath )

protected

Definition at line 125 of file G4VViewer.cc.

{
  // Set the touchable for /vis/touchable/set/... commands.
  std::ostringstream oss;
  for (const auto& pvNodeId: fullPath) {
    oss
    << ' ' << pvNodeId.GetPhysicalVolume()->GetName()
    << ' ' << pvNodeId.GetCopyNo();
  }
  G4UImanager::GetUIpointer()->ApplyCommand("/vis/set/touchable" + oss.str());
}

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virtual void G4VViewer::SetView ( )

pure virtual

Implemented in G4GMocrenFileViewer, G4DAWNFILEViewer, G4HepRepFileViewer, G4HepRepViewer, G4XXXFileViewer, G4XXXViewer, G4RayTracerViewer, G4XXXSGViewer, G4XXXStoredViewer, and G4VTreeViewer.

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void G4VViewer::SetViewParameters

(

const G4ViewParameters &

vp

)

Definition at line 120 of file G4VViewer.cc.

                                                             {
  fVP = vp;
}

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void G4VViewer::ShowView ( void  )

virtual

Reimplemented in G4GMocrenFileViewer, G4DAWNFILEViewer, G4HepRepFileViewer, G4HepRepViewer, G4XXXFileViewer, G4XXXViewer, G4VRML2FileViewer, G4VRML1FileViewer, G4XXXSGViewer, and G4XXXStoredViewer.

Definition at line 103 of file G4VViewer.cc.

{}

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void G4VViewer::TouchableSetColour ( const std::vector< G4PhysicalVolumeModel::G4PhysicalVolumeNodeID > &  fullPath, const G4Colour &  colour  )

protected

Definition at line 172 of file G4VViewer.cc.

{
  // Changes the Vis Attribute Modifiers WITHOUT triggering a rebuild.

  std::ostringstream oss;
  oss << "/vis/touchable/set/colour "
  << colour.GetRed() << ' ' << colour.GetGreen()
  << ' ' << colour.GetBlue() << ' ' << colour.GetAlpha();

  // The following is equivalent to
  //  G4UImanager::GetUIpointer()->ApplyCommand(oss.str());
  // (assuming the touchable has already been set), but avoids view rebuild.

  // Instantiate a working copy of a G4VisAttributes object...
  G4VisAttributes workingVisAtts;
  // and set the colour.
  workingVisAtts.SetColour(colour);

  fVP.AddVisAttributesModifier
  (G4ModelingParameters::VisAttributesModifier
   (workingVisAtts,
    G4ModelingParameters::VASColour,
    fullPath));
  // G4ModelingParameters::VASColour (VAS = Vis Attribute Signifier)
  // signifies that it is the colour that should be picked out
  // and merged with the touchable's normal vis attributes.

  // Record on G4cout (with #) for information.
  if (G4UImanager::GetUIpointer()->GetVerboseLevel() >= 2) {
    G4cout << "# " << oss.str() << G4endl;
  }
}

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void G4VViewer::TouchableSetVisibility ( const std::vector< G4PhysicalVolumeModel::G4PhysicalVolumeNodeID > &  fullPath, G4bool  visibility  )

protected

Definition at line 138 of file G4VViewer.cc.

{
  // Changes the Vis Attribute Modifiers WITHOUT triggering a rebuild.

  std::ostringstream oss;
  oss << "/vis/touchable/set/visibility ";
  if (visibiity) oss << "true"; else oss << "false";

  // The following is equivalent to
  //  G4UImanager::GetUIpointer()->ApplyCommand(oss.str());
  // (assuming the touchable has already been set), but avoids view rebuild.

  // Instantiate a working copy of a G4VisAttributes object...
  G4VisAttributes workingVisAtts;
  // and set the visibility.
  workingVisAtts.SetVisibility(visibiity);

  fVP.AddVisAttributesModifier
  (G4ModelingParameters::VisAttributesModifier
   (workingVisAtts,
    G4ModelingParameters::VASVisibility,
    fullPath));
  // G4ModelingParameters::VASVisibility (VAS = Vis Attribute Signifier)
  // signifies that it is the visibility that should be picked out
  // and merged with the touchable's normal vis attributes.

  // Record on G4cout (with #) for information.
  if (G4UImanager::GetUIpointer()->GetVerboseLevel() >= 2) {
    G4cout << "# " << oss.str() << G4endl;
  }
}

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Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  os, const G4VViewer &  v  )

friend

Definition at line 384 of file G4VViewer.cc.

                                                             {
  os << "View " << v.fName << ":\n";
  os << v.fVP;
  return os;
}

Member Data Documentation

G4ViewParameters G4VViewer::fDefaultVP

protected

Definition at line 206 of file G4VViewer.hh.

G4String G4VViewer::fName

protected

Definition at line 203 of file G4VViewer.hh.

G4bool G4VViewer::fNeedKernelVisit

protected

Definition at line 210 of file G4VViewer.hh.

G4VSceneHandler& G4VViewer::fSceneHandler

protected

Definition at line 201 of file G4VViewer.hh.

G4String G4VViewer::fShortName

protected

Definition at line 204 of file G4VViewer.hh.

G4int G4VViewer::fViewId

protected

Definition at line 202 of file G4VViewer.hh.

G4ViewParameters G4VViewer::fVP

protected

Definition at line 205 of file G4VViewer.hh.

---

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

• source/geant4.10.03.p03/source/visualization/management/include/G4VViewer.hh
• source/geant4.10.03.p03/source/visualization/management/src/G4VViewer.cc