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 1.18 2009/08/19 08:39:19 lgarnier 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 | } |
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50 | |
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51 | G4RayTracerViewer::~G4RayTracerViewer() {} |
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52 | |
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53 | void G4RayTracerViewer::SetView() |
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54 | { |
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55 | // Get radius of scene, etc. (See G4OpenGLViewer::SetView().) |
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56 | // Note that this procedure properly takes into account zoom, dolly and pan. |
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57 | const G4Point3D& targetPoint |
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58 | = fSceneHandler.GetScene()->GetStandardTargetPoint() |
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59 | + fVP.GetCurrentTargetPoint(); |
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60 | G4double radius = // See G4ViewParameters for following procedure. |
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61 | fSceneHandler.GetScene()->GetExtent().GetExtentRadius(); |
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62 | if(radius<=0.) radius = 1.; |
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63 | const G4double cameraDistance = fVP.GetCameraDistance(radius); |
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64 | const G4Point3D cameraPosition = |
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65 | targetPoint + cameraDistance * fVP.GetViewpointDirection().unit(); |
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66 | const G4double nearDistance = fVP.GetNearDistance(cameraDistance,radius); |
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67 | const G4double frontHalfHeight = fVP.GetFrontHalfHeight(nearDistance,radius); |
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68 | const G4double frontHalfAngle = std::atan(frontHalfHeight / nearDistance); |
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69 | |
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70 | // Calculate and set ray tracer parameters. |
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71 | theTracer-> |
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72 | SetViewSpan(200. * frontHalfAngle / theTracer->GetNColumn()); |
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73 | theTracer->SetTargetPosition(targetPoint); |
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74 | theTracer->SetEyePosition(cameraPosition); |
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75 | theTracer->SetHeadAngle(fVP.GetViewpointDirection().phi()); |
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76 | const G4Vector3D |
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77 | actualLightpointDirection(-fVP.GetActualLightpointDirection()); |
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78 | theTracer->SetLightDirection(actualLightpointDirection); |
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79 | theTracer->SetBackgroundColour(fVP.GetBackgroundColour()); |
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80 | theTracer->SetNColumn(fVP.GetWindowSizeHintX()); |
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81 | theTracer->SetNRow(fVP.GetWindowSizeHintY()); |
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82 | } |
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83 | |
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84 | |
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85 | void G4RayTracerViewer::ClearView() {} |
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86 | |
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87 | void G4RayTracerViewer::DrawView() |
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88 | { |
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89 | if (fVP.GetFieldHalfAngle() == 0.) { // Orthogonal (parallel) projection. |
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90 | G4double fieldHalfAngle = perMillion; |
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91 | fVP.SetFieldHalfAngle(fieldHalfAngle); |
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92 | G4cout << |
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93 | "WARNING: G4RayTracerViewer::DrawView: true orthogonal projection" |
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94 | "\n not yet implemented. Doing a \"long shot\", i.e., a perspective" |
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95 | "\n projection with a half field angle of " |
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96 | << fieldHalfAngle << |
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97 | " radians." |
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98 | << G4endl; |
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99 | SetView(); // Special graphics system - bypass ProcessView(). |
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100 | fVP.SetFieldHalfAngle(0.); |
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101 | } |
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102 | else { |
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103 | SetView(); // Special graphics system - bypass ProcessView(). |
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104 | } |
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105 | std::ostringstream filename; |
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106 | filename << "g4RayTracer." << fShortName << '_' << fFileCount++ << ".jpeg"; |
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107 | theTracer->Trace(filename.str()); |
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108 | } |
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