#include <G4VtkViewer.hh>

Inheritance diagram for vtkInfoCallback:

Public Member Functions
virtual void	Execute (vtkObject caller, unsigned long, void )

void	SetTextActor (vtkTextActor *txt)

	vtkInfoCallback ()

Static Public Member Functions
static vtkInfoCallback *	New ()

Protected Attributes
std::chrono::time_point< std::chrono::steady_clock >	t1

std::chrono::time_point< std::chrono::steady_clock >	t2

vtkTextActor *	TextActor

char	TextBuff [256]

Detailed Description

Definition at line 104 of file G4VtkViewer.hh.

Constructor & Destructor Documentation

◆ vtkInfoCallback()

vtkInfoCallback::vtkInfoCallback ( )

inline

Definition at line 109 of file G4VtkViewer.hh.

                    {
    t1 = std::chrono::steady_clock::now();
    t2 = std::chrono::steady_clock::now();
  }

References t1, and t2.

Referenced by New().

Member Function Documentation

◆ Execute()

virtual void vtkInfoCallback::Execute	(	vtkObject *	caller,
		unsigned long	,
		void *
	)

inlinevirtual

Definition at line 115 of file G4VtkViewer.hh.

  {
    vtkRenderer *ren = reinterpret_cast<vtkRenderer *>(caller);
    int      nActors = ren->GetActors()->GetNumberOfItems();
    vtkCamera   *cam = ren->GetActiveCamera();
    if(!cam) return;
 
    double      *pos     = cam->GetPosition();
    double      *foc     = cam->GetFocalPoint();
    double viewAngle     = cam->GetViewAngle();
    double distance      = cam->GetDistance();
    double parallelScale = cam->GetParallelScale();
 
    if(!pos) return;
 
    // Get current time
    t2 = std::chrono::steady_clock::now();
 
    // Frame rate calculation
    std::chrono::duration<double> tdiff = t2-t1;
    t1 = t2;
    float fps = 1.0/tdiff.count();
 
    // String for display
    sprintf(this->TextBuff,"camera position    : %.1f %.1f %.1f \n"
                           "camera focal point : %.1f %.1f %.1f \n"
                           "view angle         : %.1f\n"
                           "distance           : %.1f\n"
                           "parallel scale     : %.1f\n"
                           "number actors      : %i\n"
                           "fps                : %.1f",pos[0], pos[1], pos[2], foc[0], foc[1], foc[2], viewAngle, distance, parallelScale, nActors, fps);
    if(this->TextActor) {
      this->TextActor->SetInput(this->TextBuff);
    }
  }