Gabriele Cosmo
111 lines
4.6 KiB
C++
111 lines
4.6 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: G4RayTracerViewer.cc,v 1.17 2007/01/05 17:05:11 allison Exp $
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// GEANT4 tag $Name: geant4-09-00 $
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#include "G4RayTracerViewer.hh"
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#include "G4ios.hh"
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#include <sstream>
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#include "G4VSceneHandler.hh"
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#include "G4Scene.hh"
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#include "G4TheRayTracer.hh"
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#include "G4UImanager.hh"
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G4RayTracerViewer::G4RayTracerViewer
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(G4VSceneHandler& sceneHandler,
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const G4String& name,
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G4TheRayTracer* aTracer):
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G4VViewer(sceneHandler, sceneHandler.IncrementViewCount(), name),
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fFileCount(0)
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{
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theTracer = aTracer;
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if (!aTracer) theTracer = new G4TheRayTracer;
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theTracer->SetNColumn(fVP.GetWindowSizeHintX());
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theTracer->SetNRow(fVP.GetWindowSizeHintY());
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}
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G4RayTracerViewer::~G4RayTracerViewer() {}
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void G4RayTracerViewer::SetView()
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{
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// Get radius of scene, etc. (See G4OpenGLViewer::SetView().)
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// Note that this procedure properly takes into account zoom, dolly and pan.
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const G4Point3D& targetPoint
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= fSceneHandler.GetScene()->GetStandardTargetPoint()
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+ fVP.GetCurrentTargetPoint();
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G4double radius = // See G4ViewParameters for following procedure.
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fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
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if(radius<=0.) radius = 1.;
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const G4double cameraDistance = fVP.GetCameraDistance(radius);
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const G4Point3D cameraPosition =
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targetPoint + cameraDistance * fVP.GetViewpointDirection().unit();
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const G4double nearDistance = fVP.GetNearDistance(cameraDistance,radius);
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const G4double frontHalfHeight = fVP.GetFrontHalfHeight(nearDistance,radius);
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const G4double frontHalfAngle = std::atan(frontHalfHeight / nearDistance);
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// Calculate and set ray tracer parameters.
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theTracer->
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SetViewSpan(200. * frontHalfAngle / theTracer->GetNColumn());
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theTracer->SetTargetPosition(targetPoint);
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theTracer->SetEyePosition(cameraPosition);
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theTracer->SetHeadAngle(fVP.GetViewpointDirection().phi());
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const G4Vector3D
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actualLightpointDirection(-fVP.GetActualLightpointDirection());
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theTracer->SetLightDirection(actualLightpointDirection);
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theTracer->SetBackgroundColour(fVP.GetBackgroundColour());
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theTracer->SetNColumn(fVP.GetWindowSizeHintX());
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theTracer->SetNRow(fVP.GetWindowSizeHintY());
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}
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void G4RayTracerViewer::ClearView() {}
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void G4RayTracerViewer::DrawView()
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{
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if (fVP.GetFieldHalfAngle() == 0.) { // Orthogonal (parallel) projection.
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G4double fieldHalfAngle = perMillion;
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fVP.SetFieldHalfAngle(fieldHalfAngle);
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G4cout <<
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"WARNING: G4RayTracerViewer::DrawView: true orthogonal projection"
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"\n not yet implemented. Doing a \"long shot\", i.e., a perspective"
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"\n projection with a half field angle of "
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<< fieldHalfAngle <<
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" radians."
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<< G4endl;
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SetView(); // Special graphics system - bypass ProcessView().
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fVP.SetFieldHalfAngle(0.);
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}
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else {
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SetView(); // Special graphics system - bypass ProcessView().
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}
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std::ostringstream filename;
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filename << "g4RayTracer." << fShortName << '_' << fFileCount++ << ".jpeg";
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theTracer->Trace(filename.str());
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}
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