| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4RayTracerViewer.cc,v 1.17 2007/01/05 17:05:11 allison Exp $
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| 28 | // GEANT4 tag $Name: $
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| 29 |
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| 30 | #include "G4RayTracerViewer.hh"
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| 31 |
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| 32 | #include "G4ios.hh"
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| 33 | #include <sstream>
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| 34 |
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| 35 | #include "G4VSceneHandler.hh"
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| 36 | #include "G4Scene.hh"
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| 37 | #include "G4TheRayTracer.hh"
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| 38 | #include "G4UImanager.hh"
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| 39 |
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| 40 | G4RayTracerViewer::G4RayTracerViewer
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| 41 | (G4VSceneHandler& sceneHandler,
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| 42 | const G4String& name,
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| 43 | G4TheRayTracer* aTracer):
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| 44 | G4VViewer(sceneHandler, sceneHandler.IncrementViewCount(), name),
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| 45 | fFileCount(0)
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| 46 | {
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| 47 | theTracer = aTracer;
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| 48 | if (!aTracer) theTracer = new G4TheRayTracer;
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| 49 | theTracer->SetNColumn(fVP.GetWindowSizeHintX());
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| 50 | theTracer->SetNRow(fVP.GetWindowSizeHintY());
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| 51 | }
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| 52 |
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| 53 | G4RayTracerViewer::~G4RayTracerViewer() {}
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| 54 |
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| 55 | void G4RayTracerViewer::SetView()
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| 56 | {
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| 57 | // Get radius of scene, etc. (See G4OpenGLViewer::SetView().)
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| 58 | // Note that this procedure properly takes into account zoom, dolly and pan.
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| 59 | const G4Point3D& targetPoint
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| 60 | = fSceneHandler.GetScene()->GetStandardTargetPoint()
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| 61 | + fVP.GetCurrentTargetPoint();
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| 62 | G4double radius = // See G4ViewParameters for following procedure.
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| 63 | fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
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| 64 | if(radius<=0.) radius = 1.;
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| 65 | const G4double cameraDistance = fVP.GetCameraDistance(radius);
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| 66 | const G4Point3D cameraPosition =
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| 67 | targetPoint + cameraDistance * fVP.GetViewpointDirection().unit();
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| 68 | const G4double nearDistance = fVP.GetNearDistance(cameraDistance,radius);
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| 69 | const G4double frontHalfHeight = fVP.GetFrontHalfHeight(nearDistance,radius);
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| 70 | const G4double frontHalfAngle = std::atan(frontHalfHeight / nearDistance);
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| 71 |
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| 72 | // Calculate and set ray tracer parameters.
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| 73 | theTracer->
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| 74 | SetViewSpan(200. * frontHalfAngle / theTracer->GetNColumn());
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| 75 | theTracer->SetTargetPosition(targetPoint);
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| 76 | theTracer->SetEyePosition(cameraPosition);
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| 77 | theTracer->SetHeadAngle(fVP.GetViewpointDirection().phi());
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| 78 | const G4Vector3D
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| 79 | actualLightpointDirection(-fVP.GetActualLightpointDirection());
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| 80 | theTracer->SetLightDirection(actualLightpointDirection);
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| 81 | theTracer->SetBackgroundColour(fVP.GetBackgroundColour());
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| 82 | theTracer->SetNColumn(fVP.GetWindowSizeHintX());
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| 83 | theTracer->SetNRow(fVP.GetWindowSizeHintY());
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| 84 | }
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| 85 |
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| 86 |
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| 87 | void G4RayTracerViewer::ClearView() {}
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| 88 |
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| 89 | void G4RayTracerViewer::DrawView()
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| 90 | {
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| 91 | if (fVP.GetFieldHalfAngle() == 0.) { // Orthogonal (parallel) projection.
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| 92 | G4double fieldHalfAngle = perMillion;
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| 93 | fVP.SetFieldHalfAngle(fieldHalfAngle);
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| 94 | G4cout <<
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| 95 | "WARNING: G4RayTracerViewer::DrawView: true orthogonal projection"
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| 96 | "\n not yet implemented. Doing a \"long shot\", i.e., a perspective"
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| 97 | "\n projection with a half field angle of "
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| 98 | << fieldHalfAngle <<
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| 99 | " radians."
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| 100 | << G4endl;
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| 101 | SetView(); // Special graphics system - bypass ProcessView().
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| 102 | fVP.SetFieldHalfAngle(0.);
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| 103 | }
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| 104 | else {
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| 105 | SetView(); // Special graphics system - bypass ProcessView().
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| 106 | }
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| 107 | std::ostringstream filename;
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| 108 | filename << "g4RayTracer." << fShortName << '_' << fFileCount++ << ".jpeg";
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| 109 | theTracer->Trace(filename.str());
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| 110 | }
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