Gabriele Cosmo
161 lines
4.9 KiB
C++
161 lines
4.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4VRML2Viewer.cc,v 1.13 2010/11/11 00:14:50 akimura Exp $
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// GEANT4 tag $Name: geant4-09-04 $
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//
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// G4VRML2Viewer.cc
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// Satoshi Tanaka & Yasuhide Sawada
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#ifndef WIN32
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//=================//
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#ifdef G4VIS_BUILD_VRML_DRIVER
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//=================//
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//#define DEBUG_FR_VIEW
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#include <cmath>
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#include "G4VisManager.hh"
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#include "G4Scene.hh"
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#include "G4VRML2Viewer.hh"
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#include "G4VRML2SceneHandler.hh"
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#include "G4VRML2.hh"
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#include "G4ios.hh"
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G4VRML2Viewer::G4VRML2Viewer(G4VRML2SceneHandler& sceneHandler, const G4String& name) :
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G4VViewer(sceneHandler,
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sceneHandler.IncrementViewCount(),
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name),
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fSceneHandler(sceneHandler),
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fDest(sceneHandler.fDest)
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{
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fViewHalfAngle = 0.5 * 0.785398 ; // 0.5 * 45*deg
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fsin_VHA = std::sin ( fViewHalfAngle ) ;
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}
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G4VRML2Viewer::~G4VRML2Viewer()
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{}
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void G4VRML2Viewer::SetView()
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{
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#if defined DEBUG_FR_VIEW
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if (G4VisManager::GetVerbosity() >= G4VisManager::errors)
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G4cout << "***** G4VRML2Viewer::SetView(): No effects" << G4endl;
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#endif
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// Do nothing, since VRML a browser is running as a different process.
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// SendViewParameters () will do this job instead.
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}
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void G4VRML2Viewer::DrawView()
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{
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#if defined DEBUG_FR_VIEW
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if (G4VisManager::GetVerbosity() >= G4VisManager::errors)
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G4cout << "***** G4VRML2Viewer::DrawView()" << G4endl;
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#endif
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fSceneHandler.VRMLBeginModeling() ;
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// Viewpoint node
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SendViewParameters();
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// Here is a minimal DrawView() function.
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NeedKernelVisit();
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ProcessView();
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FinishView();
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}
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void G4VRML2Viewer::ClearView(void)
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{
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#if defined DEBUG_FR_VIEW
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if (G4VisManager::GetVerbosity() >= G4VisManager::errors)
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G4cout << "***** G4VRML2Viewer::ClearView(): No effects" << G4endl;
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#endif
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}
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void G4VRML2Viewer::ShowView(void)
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{
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#if defined DEBUG_FR_VIEW
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if (G4VisManager::GetVerbosity() >= G4VisManager::errors)
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G4cout << "***** G4VRML2Viewer::ShowView()" << G4endl;
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#endif
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fSceneHandler.VRMLEndModeling();
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}
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void G4VRML2Viewer::FinishView(void)
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{
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#if defined DEBUG_FR_VIEW
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if (G4VisManager::GetVerbosity() >= G4VisManager::errors)
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G4cout << "***** G4VRML2Viewer::FinishView(): No effects" << G4endl;
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#endif
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}
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void G4VRML2Viewer::SendViewParameters ()
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{
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// Calculates view representation based on extent of object being
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// viewed and (initial) direction of camera. (Note: it can change
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// later due to user interaction via visualization system's GUI.)
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#if defined DEBUG_FR_VIEW
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if (G4VisManager::GetVerbosity() >= G4VisManager::errors)
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G4cout << "***** G4VRML2Viewer::SendViewParameters()\n";
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#endif
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// error recovery
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if ( fsin_VHA < 1.0e-6 ) { return ; }
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// camera distance
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G4double extent_radius = fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
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G4double camera_distance = extent_radius / fsin_VHA ;
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// camera position on Z axis
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const G4Point3D& target_point
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= fSceneHandler.GetScene()->GetStandardTargetPoint()
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+ fVP.GetCurrentTargetPoint();
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G4double E_z = target_point.z() + camera_distance;
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G4Point3D E(0.0, 0.0, E_z );
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// VRML codes are generated below
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fDest << "\n";
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fDest << "#---------- CAMERA" << "\n";
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fDest << "Viewpoint {" << "\n";
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fDest << "\t" << "position " ;
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fDest << E.x() << " " ;
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fDest << E.y() << " " ;
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fDest << E.z() << "\n" ;
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fDest << "}" << "\n";
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fDest << "\n";
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}
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#endif
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#endif //WIN32
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