[529] | 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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[975] | 27 | // $Id: G4OpenGLStoredViewer.cc,v 1.26 2009/04/08 16:55:44 lgarnier Exp $ |
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[911] | 28 | // GEANT4 tag $Name: $ |
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[529] | 29 | // |
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| 30 | // |
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| 31 | // Andrew Walkden 7th February 1997 |
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| 32 | // Class G4OpenGLStoredViewer : Encapsulates the `storedness' of |
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| 33 | // an OpenGL view, for inheritance by |
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| 34 | // derived (X, Xm...) classes. |
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| 35 | |
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| 36 | #ifdef G4VIS_BUILD_OPENGL_DRIVER |
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| 37 | |
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| 38 | #include "G4OpenGLStoredViewer.hh" |
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| 39 | |
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| 40 | #include "G4OpenGLStoredSceneHandler.hh" |
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| 41 | #include "G4Text.hh" |
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| 42 | #include "G4Circle.hh" |
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[1125] | 43 | #include "G4UnitsTable.hh" |
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[529] | 44 | #include "G4Scene.hh" |
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| 45 | |
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| 46 | G4OpenGLStoredViewer::G4OpenGLStoredViewer |
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| 47 | (G4OpenGLStoredSceneHandler& sceneHandler): |
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| 48 | G4VViewer (sceneHandler, -1), |
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| 49 | G4OpenGLViewer (sceneHandler), |
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| 50 | fG4OpenGLStoredSceneHandler (sceneHandler) |
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| 51 | { |
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| 52 | fLastVP = fDefaultVP; // Not sure if this gets executed before or |
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| 53 | // after G4VViewer::G4VViewer!! Doesn't matter much. |
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| 54 | } |
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| 55 | |
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| 56 | G4OpenGLStoredViewer::~G4OpenGLStoredViewer () {} |
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| 57 | |
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| 58 | void G4OpenGLStoredViewer::KernelVisitDecision () { |
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| 59 | |
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| 60 | // If there's a significant difference with the last view parameters |
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| 61 | // of either the scene handler or this viewer, trigger a rebuild. |
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| 62 | |
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| 63 | if (!fG4OpenGLStoredSceneHandler.fTopPODL || |
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| 64 | CompareForKernelVisit(fLastVP)) { |
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| 65 | NeedKernelVisit (); |
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| 66 | } |
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| 67 | fLastVP = fVP; |
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| 68 | } |
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| 69 | |
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| 70 | G4bool G4OpenGLStoredViewer::CompareForKernelVisit(G4ViewParameters& lastVP) { |
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| 71 | |
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| 72 | if ( |
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| 73 | (lastVP.GetDrawingStyle () != fVP.GetDrawingStyle ()) || |
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| 74 | (lastVP.IsAuxEdgeVisible () != fVP.IsAuxEdgeVisible ()) || |
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| 75 | (lastVP.GetRepStyle () != fVP.GetRepStyle ()) || |
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| 76 | (lastVP.IsCulling () != fVP.IsCulling ()) || |
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| 77 | (lastVP.IsCullingInvisible () != fVP.IsCullingInvisible ()) || |
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| 78 | (lastVP.IsDensityCulling () != fVP.IsDensityCulling ()) || |
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| 79 | (lastVP.IsCullingCovered () != fVP.IsCullingCovered ()) || |
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| 80 | (lastVP.IsSection () != fVP.IsSection ()) || |
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| 81 | // Section (DCUT) implemented locally. But still need to visit |
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| 82 | // kernel if status changes so that back plane culling can be |
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| 83 | // switched. |
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| 84 | (lastVP.IsCutaway () != fVP.IsCutaway ()) || |
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| 85 | // Cutaways implemented locally. But still need to visit kernel |
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| 86 | // if status changes so that back plane culling can be switched. |
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| 87 | (lastVP.IsExplode () != fVP.IsExplode ()) || |
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| 88 | (lastVP.GetNoOfSides () != fVP.GetNoOfSides ()) || |
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| 89 | (lastVP.IsMarkerNotHidden () != fVP.IsMarkerNotHidden ()) || |
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[593] | 90 | (lastVP.GetBackgroundColour ()!= fVP.GetBackgroundColour ())|| |
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| 91 | (lastVP.IsPicking () != fVP.IsPicking ()) |
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| 92 | ) |
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[529] | 93 | return true; |
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[593] | 94 | |
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[529] | 95 | if (lastVP.IsDensityCulling () && |
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| 96 | (lastVP.GetVisibleDensity () != fVP.GetVisibleDensity ())) |
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| 97 | return true; |
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| 98 | |
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| 99 | /************************************************************** |
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| 100 | Section (DCUT) implemented locally. No need to visit kernel if |
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| 101 | section plane itself changes. |
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| 102 | if (lastVP.IsSection () && |
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| 103 | (lastVP.GetSectionPlane () != fVP.GetSectionPlane ())) |
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| 104 | return true; |
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| 105 | ***************************************************************/ |
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| 106 | |
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| 107 | /************************************************************** |
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| 108 | Cutaways implemented locally. No need to visit kernel if cutaway |
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| 109 | planes themselves change. |
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| 110 | if (lastVP.IsCutaway ()) { |
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| 111 | if (lastVP.GetCutawayPlanes ().size () != |
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| 112 | fVP.GetCutawayPlanes ().size ()) return true; |
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| 113 | for (size_t i = 0; i < lastVP.GetCutawayPlanes().size(); ++i) |
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| 114 | if (lastVP.GetCutawayPlanes()[i] != fVP.GetCutawayPlanes()[i]) |
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| 115 | return true; |
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| 116 | } |
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| 117 | ***************************************************************/ |
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| 118 | |
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| 119 | if (lastVP.IsExplode () && |
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| 120 | (lastVP.GetExplodeFactor () != fVP.GetExplodeFactor ())) |
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| 121 | return true; |
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| 122 | |
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| 123 | return false; |
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| 124 | } |
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| 125 | |
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| 126 | void G4OpenGLStoredViewer::DrawDisplayLists () { |
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[945] | 127 | #ifdef G4DEBUG_VIS_OGL |
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| 128 | printf("G4OpenGLStoredViewer::DrawDisplayLists \n"); |
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| 129 | #endif |
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[529] | 130 | |
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| 131 | const G4Planes& cutaways = fVP.GetCutawayPlanes(); |
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| 132 | G4bool cutawayUnion = fVP.IsCutaway() && |
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| 133 | fVP.GetCutawayMode() == G4ViewParameters::cutawayUnion; |
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| 134 | size_t nPasses = cutawayUnion? cutaways.size(): 1; |
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[946] | 135 | #ifdef G4DEBUG_VIS_OGL |
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[975] | 136 | printf("G4OpenGLStoredViewer::DrawDisplayLists"); |
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[946] | 137 | #endif |
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[529] | 138 | for (size_t i = 0; i < nPasses; ++i) { |
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[945] | 139 | #ifdef G4DEBUG_VIS_OGL |
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[946] | 140 | printf("+"); |
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[945] | 141 | #endif |
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[529] | 142 | |
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| 143 | if (cutawayUnion) { |
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| 144 | double a[4]; |
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| 145 | a[0] = cutaways[i].a(); |
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| 146 | a[1] = cutaways[i].b(); |
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| 147 | a[2] = cutaways[i].c(); |
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| 148 | a[3] = cutaways[i].d(); |
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| 149 | glClipPlane (GL_CLIP_PLANE2, a); |
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| 150 | glEnable (GL_CLIP_PLANE2); |
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| 151 | } |
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| 152 | |
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[688] | 153 | if (fG4OpenGLStoredSceneHandler.fTopPODL) |
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[529] | 154 | glCallList (fG4OpenGLStoredSceneHandler.fTopPODL); |
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[688] | 155 | |
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[593] | 156 | for (size_t i = 0; i < fG4OpenGLStoredSceneHandler.fTOList.size(); ++i) { |
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[945] | 157 | #ifdef G4DEBUG_VIS_OGL |
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[946] | 158 | printf("-"); |
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[945] | 159 | #endif |
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[529] | 160 | G4OpenGLStoredSceneHandler::TO& to = |
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| 161 | fG4OpenGLStoredSceneHandler.fTOList[i]; |
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[593] | 162 | if (to.fEndTime >= fStartTime && to.fStartTime <= fEndTime) { |
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[529] | 163 | glPushMatrix(); |
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| 164 | G4OpenGLTransform3D oglt (to.fTransform); |
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| 165 | glMultMatrixd (oglt.GetGLMatrix ()); |
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[593] | 166 | if (fVP.IsPicking()) glLoadName(to.fPickName); |
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[529] | 167 | G4Colour& c = to.fColour; |
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[593] | 168 | G4double bsf = 1.; // Brightness scaling factor. |
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[529] | 169 | if (fFadeFactor > 0. && to.fEndTime < fEndTime) |
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| 170 | bsf = 1. - fFadeFactor * |
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| 171 | ((fEndTime - to.fEndTime) / (fEndTime - fStartTime)); |
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| 172 | glColor3d(bsf * c.GetRed (), bsf * c.GetGreen (), bsf * c.GetBlue ()); |
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| 173 | glCallList (to.fDisplayListId); |
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| 174 | glPopMatrix(); |
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| 175 | } |
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| 176 | } |
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| 177 | |
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| 178 | if (cutawayUnion) glDisable (GL_CLIP_PLANE2); |
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| 179 | } |
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[946] | 180 | #ifdef G4DEBUG_VIS_OGL |
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| 181 | printf("\n"); |
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| 182 | #endif |
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[529] | 183 | |
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| 184 | // Display time at "head" of time range, which is fEndTime... |
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[789] | 185 | if (fDisplayHeadTime && fEndTime < DBL_MAX) { |
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[529] | 186 | glMatrixMode (GL_PROJECTION); |
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| 187 | glPushMatrix(); |
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| 188 | glLoadIdentity(); |
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[789] | 189 | glOrtho (-1., 1., -1., 1., -G4OPENGL_FLT_BIG, G4OPENGL_FLT_BIG); |
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[529] | 190 | glMatrixMode (GL_MODELVIEW); |
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| 191 | glPushMatrix(); |
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| 192 | glLoadIdentity(); |
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| 193 | G4Text headTimeText(G4BestUnit(fEndTime,"Time"), |
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| 194 | G4Point3D(fDisplayHeadTimeX, fDisplayHeadTimeY, 0.)); |
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| 195 | headTimeText.SetScreenSize(fDisplayHeadTimeSize); |
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| 196 | G4VisAttributes visAtts (G4Colour |
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| 197 | (fDisplayHeadTimeRed, |
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| 198 | fDisplayHeadTimeGreen, |
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| 199 | fDisplayHeadTimeBlue)); |
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| 200 | headTimeText.SetVisAttributes(&visAtts); |
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[593] | 201 | static_cast<G4OpenGLSceneHandler&>(fSceneHandler). |
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| 202 | G4OpenGLSceneHandler::AddPrimitive(headTimeText); |
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[529] | 203 | glMatrixMode (GL_PROJECTION); |
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| 204 | glPopMatrix(); |
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| 205 | glMatrixMode (GL_MODELVIEW); |
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| 206 | glPopMatrix(); |
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| 207 | } |
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| 208 | |
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| 209 | // Display light front... |
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[789] | 210 | if (fDisplayLightFront && fEndTime < DBL_MAX) { |
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[529] | 211 | G4double lightFrontRadius = (fEndTime - fDisplayLightFrontT) * c_light; |
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| 212 | if (lightFrontRadius > 0.) { |
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| 213 | G4Point3D lightFrontCentre(fDisplayLightFrontX, fDisplayLightFrontY, fDisplayLightFrontZ); |
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| 214 | G4Point3D circleCentre = lightFrontCentre; |
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| 215 | G4double circleRadius = lightFrontRadius; |
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| 216 | if (fVP.GetFieldHalfAngle() > 0.) { |
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| 217 | // Perspective view. Find horizon centre and radius... |
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| 218 | G4Point3D targetPoint = fSceneHandler.GetScene()->GetStandardTargetPoint() + |
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| 219 | fVP.GetCurrentTargetPoint(); |
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| 220 | G4double sceneRadius = fSceneHandler.GetScene()->GetExtent().GetExtentRadius(); |
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| 221 | if(sceneRadius <= 0.) sceneRadius = 1.; |
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| 222 | G4double cameraDistance = fVP.GetCameraDistance(sceneRadius); |
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| 223 | G4Point3D cameraPosition = targetPoint + cameraDistance * fVP.GetViewpointDirection().unit(); |
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| 224 | G4Vector3D lightFrontToCameraDirection = cameraPosition - lightFrontCentre; |
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| 225 | G4double lightFrontCentreDistance = lightFrontToCameraDirection.mag(); |
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| 226 | /* |
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| 227 | G4cout << "cameraPosition: " << cameraPosition |
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| 228 | << ", lightFrontCentre: " << lightFrontCentre |
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| 229 | << ", lightFrontRadius: " << lightFrontRadius |
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| 230 | << ", lightFrontCentreDistance: " << lightFrontCentreDistance |
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| 231 | << ", dot: " << lightFrontToCameraDirection * fVP.GetViewpointDirection() |
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| 232 | << G4endl; |
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| 233 | */ |
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| 234 | if (lightFrontToCameraDirection * fVP.GetViewpointDirection() > 0. && lightFrontRadius < lightFrontCentreDistance) { |
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| 235 | // Light front in front of camera... |
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| 236 | G4double sineHorizonAngle = lightFrontRadius / lightFrontCentreDistance; |
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| 237 | circleCentre = lightFrontCentre + (lightFrontRadius * sineHorizonAngle) * lightFrontToCameraDirection.unit(); |
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| 238 | circleRadius = lightFrontRadius * std::sqrt(1. - std::pow(sineHorizonAngle, 2)); |
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| 239 | /* |
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| 240 | G4cout << "sineHorizonAngle: " << sineHorizonAngle |
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| 241 | << ", circleCentre: " << circleCentre |
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| 242 | << ", circleRadius: " << circleRadius |
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| 243 | << G4endl; |
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| 244 | */ |
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| 245 | } else { |
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| 246 | circleRadius = -1.; |
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| 247 | } |
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| 248 | } |
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| 249 | if (circleRadius > 0.) { |
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| 250 | G4Circle lightFront(circleCentre); |
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| 251 | lightFront.SetWorldRadius(circleRadius); |
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| 252 | glColor3d(fDisplayLightFrontRed, |
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| 253 | fDisplayLightFrontGreen, |
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| 254 | fDisplayLightFrontBlue); |
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| 255 | static_cast<G4OpenGLSceneHandler&>(fSceneHandler). |
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| 256 | G4OpenGLSceneHandler::AddPrimitive(lightFront); |
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| 257 | } |
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| 258 | } |
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| 259 | } |
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| 260 | } |
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| 261 | |
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| 262 | #endif |
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