Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/visualization/Vtk/src/G4VtkOffscreenViewer.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 
 26 #include "G4VtkOffscreenViewer.hh"
 27 #include "G4VtkSceneHandler.hh"
 28 #include "G4VSceneHandler.hh"
 29 
 30 #include <vtkWindowToImageFilter.h>
 31 #include <vtkPNGWriter.h>
 32 
 33 G4VtkOffscreenViewer::G4VtkOffscreenViewer(G4VSceneHandler& sceneHandler, const G4String& name)
 34   : G4VtkViewer(sceneHandler, name)
 35 {
 36 }
 37 
 38 G4VtkOffscreenViewer::~G4VtkOffscreenViewer()
 39 {
 40 }
 41 
 42 void G4VtkOffscreenViewer::Initialise()
 43 {
 44   G4VtkViewer::Initialise();
 45   _renderWindow->SetOffScreenRendering(1);
 46 }
 47 
 48 void G4VtkOffscreenViewer::FinishView()
 49 {
 50   auto& fVtkSceneHandler = dynamic_cast<G4VtkSceneHandler&>(fSceneHandler);
 51   fVtkSceneHandler.Modified();
 52 
 53   _renderWindow->Render();
 54 
 55   vtkNew<vtkWindowToImageFilter> windowToImageFilter;
 56   windowToImageFilter->SetInput(_renderWindow);
 57   windowToImageFilter->Update();
 58 
 59   vtkNew<vtkPNGWriter> writer;
 60   writer->SetFileName("offscreen.png");
 61   writer->SetInputConnection(windowToImageFilter->GetOutputPort());
 62   writer->Write();
 63 }
 64