[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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[790] | 27 | // $Id: G4OpenGLStoredSceneHandler.cc,v 1.38 2008/04/28 16:19:39 allison Exp $ |
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[631] | 28 | // GEANT4 tag $Name: $ |
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[529] | 29 | // |
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| 30 | // |
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| 31 | // Andrew Walkden 10th February 1997 |
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| 32 | // OpenGL stored scene - creates OpenGL display lists. |
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| 33 | |
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| 34 | #ifdef G4VIS_BUILD_OPENGL_DRIVER |
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| 35 | |
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| 36 | // Included here - problems with HP compiler if not before other includes? |
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| 37 | #include "G4NURBS.hh" |
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| 38 | |
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| 39 | // Here follows a special for Mesa, the OpenGL emulator. Does not affect |
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| 40 | // other OpenGL's, as far as I'm aware. John Allison 18/9/96. |
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| 41 | #define CENTERLINE_CLPP /* CenterLine C++ workaround: */ |
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| 42 | // Also seems to be required for HP's CC and AIX xlC, at least. |
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| 43 | |
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| 44 | #include "G4OpenGLStoredSceneHandler.hh" |
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| 45 | |
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| 46 | #include "G4PhysicalVolumeModel.hh" |
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| 47 | #include "G4VPhysicalVolume.hh" |
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[593] | 48 | #include "G4LogicalVolume.hh" |
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[529] | 49 | #include "G4Polyline.hh" |
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| 50 | #include "G4Polymarker.hh" |
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[593] | 51 | #include "G4Text.hh" |
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[529] | 52 | #include "G4Circle.hh" |
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| 53 | #include "G4Square.hh" |
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[593] | 54 | #include "G4Polyhedron.hh" |
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| 55 | #include "G4AttHolder.hh" |
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[529] | 56 | |
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[790] | 57 | G4OpenGLStoredSceneHandler::PO::PO |
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| 58 | (G4int id, |
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| 59 | const G4Transform3D& tr): |
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| 60 | fDisplayListId(id), |
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| 61 | fTransform(tr), |
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| 62 | fPickName(0) |
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| 63 | {} |
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| 64 | |
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| 65 | G4OpenGLStoredSceneHandler::TO::TO |
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| 66 | (G4int id, |
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| 67 | const G4Transform3D& tr): |
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| 68 | fDisplayListId(id), |
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| 69 | fTransform(tr), |
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| 70 | fPickName(0), |
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| 71 | fStartTime(-DBL_MAX), |
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| 72 | fEndTime(DBL_MAX) |
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| 73 | {} |
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| 74 | |
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| 75 | G4OpenGLStoredSceneHandler::G4OpenGLStoredSceneHandler |
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| 76 | (G4VGraphicsSystem& system, |
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| 77 | const G4String& name): |
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[529] | 78 | G4OpenGLSceneHandler (system, fSceneIdCount++, name), |
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| 79 | fMemoryForDisplayLists (true), |
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| 80 | fAddPrimitivePreambleNestingDepth (0), |
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[688] | 81 | fTopPODL (0) |
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[529] | 82 | {} |
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| 83 | |
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| 84 | G4OpenGLStoredSceneHandler::~G4OpenGLStoredSceneHandler () |
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| 85 | {} |
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| 86 | |
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| 87 | void G4OpenGLStoredSceneHandler::AddPrimitivePreamble(const G4Visible& visible) |
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| 88 | { |
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| 89 | // Track nesting depth to avoid recursive calls, for example, from a |
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| 90 | // G4Polymarker that invokes a G4Circle... |
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| 91 | fAddPrimitivePreambleNestingDepth++; |
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| 92 | if (fAddPrimitivePreambleNestingDepth > 1) return; |
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| 93 | |
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[593] | 94 | // Because of our need to control colour of transients (display by |
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| 95 | // time fading), display lists may only cover a single primitive. |
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| 96 | // So display list setup is here. |
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[529] | 97 | |
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[593] | 98 | if (fpViewer->GetViewParameters().IsPicking()) { |
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| 99 | fPickMap[++fPickName] = 0; |
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| 100 | } |
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[529] | 101 | |
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[593] | 102 | const G4Colour& c = GetColour (visible); |
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[529] | 103 | |
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[593] | 104 | if (fMemoryForDisplayLists) { |
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| 105 | fDisplayListId = glGenLists (1); |
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| 106 | if (!fDisplayListId) { // Could pre-allocate? |
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| 107 | G4cout << |
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| 108 | "********************* WARNING! ********************" |
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| 109 | "\nUnable to allocate any more display lists in OpenGL." |
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| 110 | "\n Continuing drawing in IMMEDIATE MODE." |
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| 111 | "\n***************************************************" |
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| 112 | << G4endl; |
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| 113 | fMemoryForDisplayLists = false; |
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| 114 | } |
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| 115 | } |
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| 116 | if (fMemoryForDisplayLists) { |
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| 117 | if (fReadyForTransients) { |
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| 118 | TO to(fDisplayListId, *fpObjectTransformation); |
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| 119 | to.fPickName = fPickName; |
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| 120 | to.fColour = c; |
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| 121 | const G4VisAttributes* pVA = |
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| 122 | fpViewer->GetApplicableVisAttributes(visible.GetVisAttributes()); |
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| 123 | to.fStartTime = pVA->GetStartTime(); |
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| 124 | to.fEndTime = pVA->GetEndTime(); |
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| 125 | fTOList.push_back(to); |
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| 126 | glDrawBuffer (GL_FRONT); |
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| 127 | glPushMatrix(); |
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| 128 | G4OpenGLTransform3D oglt (*fpObjectTransformation); |
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| 129 | glMultMatrixd (oglt.GetGLMatrix ()); |
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| 130 | glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ()); |
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| 131 | glNewList (fDisplayListId, GL_COMPILE_AND_EXECUTE); |
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| 132 | } |
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| 133 | else { |
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| 134 | PO po(fDisplayListId, *fpObjectTransformation); |
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| 135 | po.fPickName = fPickName; |
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| 136 | fPOList.push_back(po); |
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| 137 | glNewList (fDisplayListId, GL_COMPILE); |
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| 138 | glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ()); |
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| 139 | } |
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[529] | 140 | } else { |
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[593] | 141 | glDrawBuffer (GL_FRONT); |
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| 142 | glPushMatrix(); |
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| 143 | G4OpenGLTransform3D oglt (*fpObjectTransformation); |
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| 144 | glMultMatrixd (oglt.GetGLMatrix ()); |
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[529] | 145 | glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ()); |
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| 146 | } |
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[593] | 147 | |
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| 148 | if (fProcessing2D) { |
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| 149 | // Push current 3D world matrices and load identity to define screen |
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| 150 | // coordinates... |
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| 151 | glMatrixMode (GL_PROJECTION); |
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| 152 | glPushMatrix(); |
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| 153 | glLoadIdentity(); |
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[789] | 154 | glOrtho (-1., 1., -1., 1., -G4OPENGL_FLT_BIG, G4OPENGL_FLT_BIG); |
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[593] | 155 | glMatrixMode (GL_MODELVIEW); |
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| 156 | glPushMatrix(); |
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| 157 | glLoadIdentity(); |
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[688] | 158 | G4OpenGLTransform3D oglt (*fpObjectTransformation); |
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| 159 | glMultMatrixd (oglt.GetGLMatrix ()); |
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| 160 | glColor3d (c.GetRed (), c.GetGreen (), c.GetBlue ()); |
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[593] | 161 | } |
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[529] | 162 | } |
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| 163 | |
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| 164 | void G4OpenGLStoredSceneHandler::AddPrimitivePostamble() |
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| 165 | { |
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[593] | 166 | if (fProcessing2D) { |
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| 167 | // Pop current 3D world matrices back again... |
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| 168 | glMatrixMode (GL_PROJECTION); |
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| 169 | glPopMatrix(); |
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| 170 | glMatrixMode (GL_MODELVIEW); |
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| 171 | glPopMatrix(); |
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| 172 | } |
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| 173 | |
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| 174 | if (fMemoryForDisplayLists) { |
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| 175 | glEndList(); |
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| 176 | } |
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| 177 | if (fReadyForTransients || !fMemoryForDisplayLists) { |
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| 178 | glPopMatrix(); |
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| 179 | glFlush (); |
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| 180 | glDrawBuffer (GL_BACK); |
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| 181 | } |
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[529] | 182 | fAddPrimitivePreambleNestingDepth--; |
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| 183 | } |
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| 184 | |
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| 185 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4Polyline& polyline) |
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| 186 | { |
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| 187 | AddPrimitivePreamble(polyline); |
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| 188 | G4OpenGLSceneHandler::AddPrimitive(polyline); |
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| 189 | AddPrimitivePostamble(); |
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| 190 | } |
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| 191 | |
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[593] | 192 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4Polymarker& polymarker) |
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| 193 | { |
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| 194 | AddPrimitivePreamble(polymarker); |
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| 195 | G4OpenGLSceneHandler::AddPrimitive(polymarker); |
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| 196 | AddPrimitivePostamble(); |
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| 197 | } |
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| 198 | |
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| 199 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4Text& text) |
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| 200 | { |
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| 201 | // Note: colour is still handled in |
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| 202 | // G4OpenGLSceneHandler::AddPrimitive(const G4Text&), so it still |
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| 203 | // gets into the display list |
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| 204 | AddPrimitivePreamble(text); |
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| 205 | G4OpenGLSceneHandler::AddPrimitive(text); |
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| 206 | AddPrimitivePostamble(); |
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| 207 | } |
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| 208 | |
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[529] | 209 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4Circle& circle) |
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| 210 | { |
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| 211 | AddPrimitivePreamble(circle); |
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| 212 | G4OpenGLSceneHandler::AddPrimitive(circle); |
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| 213 | AddPrimitivePostamble(); |
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| 214 | } |
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| 215 | |
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| 216 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4Square& square) |
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| 217 | { |
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| 218 | AddPrimitivePreamble(square); |
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| 219 | G4OpenGLSceneHandler::AddPrimitive(square); |
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| 220 | AddPrimitivePostamble(); |
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| 221 | } |
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| 222 | |
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[593] | 223 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4Scale& scale) |
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[529] | 224 | { |
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[593] | 225 | // Let base class split into primitives. |
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| 226 | G4OpenGLSceneHandler::AddPrimitive(scale); |
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| 227 | } |
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| 228 | |
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| 229 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4Polyhedron& polyhedron) |
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| 230 | { |
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| 231 | // Note: colour is still handled in |
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| 232 | // G4OpenGLSceneHandler::AddPrimitive(const G4Polyhedron&), so it still |
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| 233 | // gets into the display list |
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| 234 | AddPrimitivePreamble(polyhedron); |
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| 235 | G4OpenGLSceneHandler::AddPrimitive(polyhedron); |
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[529] | 236 | AddPrimitivePostamble(); |
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| 237 | } |
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| 238 | |
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[593] | 239 | void G4OpenGLStoredSceneHandler::AddPrimitive (const G4NURBS& nurbs) |
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| 240 | { |
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| 241 | // Note: colour is still handled in |
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| 242 | // G4OpenGLSceneHandler::AddPrimitive(const G4NURBS&), so it still |
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| 243 | // gets into the display list |
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| 244 | AddPrimitivePreamble(nurbs); |
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| 245 | G4OpenGLSceneHandler::AddPrimitive(nurbs); |
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| 246 | AddPrimitivePostamble(); |
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| 247 | } |
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| 248 | |
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[529] | 249 | void G4OpenGLStoredSceneHandler::BeginPrimitives |
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[593] | 250 | (const G4Transform3D& objectTransformation) |
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| 251 | { |
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| 252 | G4OpenGLSceneHandler::BeginPrimitives (objectTransformation); |
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[529] | 253 | |
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[593] | 254 | // Display list setup moved to AddPrimitivePreamble. See notes there. |
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[529] | 255 | } |
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| 256 | |
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[593] | 257 | void G4OpenGLStoredSceneHandler::EndPrimitives () |
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| 258 | { |
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| 259 | G4OpenGLSceneHandler::EndPrimitives (); |
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[529] | 260 | } |
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| 261 | |
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[688] | 262 | void G4OpenGLStoredSceneHandler::BeginPrimitives2D |
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| 263 | (const G4Transform3D& objectTransformation) |
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[529] | 264 | { |
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[688] | 265 | G4OpenGLSceneHandler::BeginPrimitives2D(objectTransformation); |
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[529] | 266 | } |
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| 267 | |
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| 268 | void G4OpenGLStoredSceneHandler::EndPrimitives2D () |
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| 269 | { |
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[593] | 270 | G4OpenGLSceneHandler::EndPrimitives2D (); |
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[529] | 271 | } |
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| 272 | |
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| 273 | void G4OpenGLStoredSceneHandler::BeginModeling () { |
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| 274 | G4VSceneHandler::BeginModeling(); |
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| 275 | ClearStore(); // ...and all that goes with it. |
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| 276 | /* Debug... |
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| 277 | fDisplayListId = glGenLists (1); |
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| 278 | G4cout << "OGL::fDisplayListId (start): " << fDisplayListId << G4endl; |
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| 279 | */ |
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| 280 | } |
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| 281 | |
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| 282 | void G4OpenGLStoredSceneHandler::EndModeling () { |
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| 283 | // Make a List which calls the other lists. |
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| 284 | fTopPODL = glGenLists (1); |
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| 285 | if (!fTopPODL) { |
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| 286 | G4cout << |
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| 287 | "ERROR: G4OpenGLStoredSceneHandler::EndModeling: Failure to allocate" |
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| 288 | " display List for fTopPODL - try OpenGL Immediated mode." |
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| 289 | << G4endl; |
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[593] | 290 | } else { |
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[529] | 291 | glNewList (fTopPODL, GL_COMPILE_AND_EXECUTE); { |
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| 292 | for (size_t i = 0; i < fPOList.size (); i++) { |
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| 293 | glPushMatrix(); |
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| 294 | G4OpenGLTransform3D oglt (fPOList[i].fTransform); |
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| 295 | glMultMatrixd (oglt.GetGLMatrix ()); |
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[593] | 296 | if (fpViewer->GetViewParameters().IsPicking()) |
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| 297 | glLoadName(fPOList[i].fPickName); |
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[529] | 298 | glCallList (fPOList[i].fDisplayListId); |
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| 299 | glPopMatrix(); |
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| 300 | } |
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| 301 | } |
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| 302 | glEndList (); |
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| 303 | } |
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| 304 | |
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| 305 | G4VSceneHandler::EndModeling (); |
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| 306 | |
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| 307 | /* Debug... |
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| 308 | fDisplayListId = glGenLists (1); |
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| 309 | G4cout << "OGL::fDisplayListId (end): " << fDisplayListId << G4endl; |
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| 310 | */ |
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| 311 | } |
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| 312 | |
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| 313 | void G4OpenGLStoredSceneHandler::ClearStore () { |
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| 314 | |
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| 315 | G4VSceneHandler::ClearStore (); // Sets need kernel visit, etc. |
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| 316 | |
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| 317 | // Delete OpenGL permanent display lists. |
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| 318 | for (size_t i = 0; i < fPOList.size (); i++) |
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| 319 | glDeleteLists (fPOList[i].fDisplayListId, 1); |
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| 320 | if (fTopPODL) glDeleteLists (fTopPODL, 1); |
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| 321 | fTopPODL = 0; |
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| 322 | |
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| 323 | // Clear other lists, dictionary, etc. |
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| 324 | fPOList.clear (); |
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| 325 | fSolidMap.clear (); |
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[593] | 326 | ClearAndDestroyAtts(); |
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[529] | 327 | |
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| 328 | // ...and clear transient store... |
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| 329 | for (size_t i = 0; i < fTOList.size (); i++) |
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| 330 | glDeleteLists(fTOList[i].fDisplayListId, 1); |
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| 331 | fTOList.clear (); |
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| 332 | } |
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| 333 | |
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| 334 | void G4OpenGLStoredSceneHandler::ClearTransientStore () { |
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| 335 | |
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| 336 | G4VSceneHandler::ClearTransientStore (); |
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| 337 | |
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| 338 | // Delete OpenGL transient display lists and Transient Objects themselves. |
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| 339 | for (size_t i = 0; i < fTOList.size (); i++) |
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| 340 | glDeleteLists(fTOList[i].fDisplayListId, 1); |
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| 341 | fTOList.clear (); |
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| 342 | |
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| 343 | // Make sure screen corresponds to graphical database... |
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| 344 | if (fpViewer) { |
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| 345 | fpViewer -> SetView (); |
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| 346 | fpViewer -> ClearView (); |
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| 347 | fpViewer -> DrawView (); |
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| 348 | } |
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| 349 | } |
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| 350 | |
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| 351 | void G4OpenGLStoredSceneHandler::RequestPrimitives (const G4VSolid& solid) |
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| 352 | { |
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| 353 | if (fReadyForTransients) { |
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| 354 | // Always draw transient solids, e.g., hits represented as solids. |
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| 355 | // (As we have no control over the order of drawing of transient |
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| 356 | // objects, we cannot do anything about transparent ones, as |
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| 357 | // below, so always draw them.) |
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| 358 | G4VSceneHandler::RequestPrimitives (solid); |
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| 359 | return; |
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| 360 | } |
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| 361 | |
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| 362 | // For non-transient (run-duration) objects, ensure transparent |
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| 363 | // objects are drawn last. The problem of |
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| 364 | // blending/transparency/alpha is quite a tricky one - see History |
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| 365 | // of opengl-V07-01-01/2/3. |
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| 366 | // Get vis attributes - pick up defaults if none. |
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| 367 | const G4VisAttributes* pVA = |
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| 368 | fpViewer -> GetApplicableVisAttributes(fpVisAttribs); |
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| 369 | const G4Colour& c = pVA -> GetColour (); |
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| 370 | G4double opacity = c.GetAlpha (); |
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| 371 | |
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| 372 | if (!fSecondPass) { |
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| 373 | G4bool transparency_enabled = true; |
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| 374 | G4OpenGLViewer* pViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer); |
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| 375 | if (pViewer) transparency_enabled = pViewer->transparency_enabled; |
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| 376 | if (transparency_enabled && opacity < 1.) { |
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| 377 | // On first pass, transparent objects are not drawn, but flag is set... |
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| 378 | fSecondPassRequested = true; |
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| 379 | return; |
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| 380 | } |
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| 381 | } |
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| 382 | |
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| 383 | // On second pass, opaque objects are not drwan... |
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| 384 | if (fSecondPass && opacity >= 1.) return; |
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| 385 | |
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| 386 | G4PhysicalVolumeModel* pPVModel = |
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| 387 | dynamic_cast<G4PhysicalVolumeModel*>(fpModel); |
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| 388 | |
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| 389 | if (pPVModel) { |
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| 390 | // If part of the geometry hierarchy, i.e., from a |
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| 391 | // G4PhysicalVolumeModel, check if a display list already exists for |
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| 392 | // this solid, re-use it if possible. We could be smarter, and |
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| 393 | // recognise repeated branches of the geometry hierarchy, for |
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| 394 | // example. But this algorithm should be secure, I think... |
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| 395 | const G4VSolid* pSolid = &solid; |
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| 396 | EAxis axis = kRho; |
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| 397 | G4VPhysicalVolume* pCurrentPV = pPVModel->GetCurrentPV(); |
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| 398 | if (pCurrentPV -> IsReplicated ()) { |
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| 399 | G4int nReplicas; |
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| 400 | G4double width; |
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| 401 | G4double offset; |
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| 402 | G4bool consuming; |
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| 403 | pCurrentPV->GetReplicationData(axis,nReplicas,width,offset,consuming); |
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| 404 | } |
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| 405 | // Provided it is not parametrised (because if so, the |
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| 406 | // solid's parameters might have been changed)... |
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| 407 | if (!(pCurrentPV -> IsParameterised ()) && |
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| 408 | // Provided it is not replicated radially (because if so, the |
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| 409 | // solid's parameters will have been changed)... |
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| 410 | !(pCurrentPV -> IsReplicated () && axis == kRho) && |
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| 411 | // ...and if the solid has already been rendered... |
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| 412 | (fSolidMap.find (pSolid) != fSolidMap.end ())) { |
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| 413 | fDisplayListId = fSolidMap [pSolid]; |
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[593] | 414 | PO po(fDisplayListId,*fpObjectTransformation); |
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| 415 | if (fpViewer->GetViewParameters().IsPicking()) { |
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| 416 | G4AttHolder* holder = new G4AttHolder; |
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| 417 | // Load G4Atts from G4VisAttributes, if any... |
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| 418 | const G4VisAttributes* va = pPVModel->GetCurrentLV()->GetVisAttributes(); |
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| 419 | if (va) { |
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| 420 | const std::map<G4String,G4AttDef>* vaDefs = va->GetAttDefs(); |
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| 421 | if (vaDefs) holder->AddAtts(va->CreateAttValues(), vaDefs); |
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| 422 | } |
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| 423 | // Load G4Atts from G4PhysicalVolumeModel... |
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| 424 | const std::map<G4String,G4AttDef>* defs = pPVModel->GetAttDefs(); |
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| 425 | if (defs) holder->AddAtts(pPVModel->CreateCurrentAttValues(), defs); |
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| 426 | fPickMap[++fPickName] = holder; |
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| 427 | po.fPickName = fPickName; |
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| 428 | } |
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| 429 | fPOList.push_back(po); |
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[529] | 430 | } |
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| 431 | else { |
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| 432 | G4VSceneHandler::RequestPrimitives (solid); |
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| 433 | fSolidMap [pSolid] = fDisplayListId; |
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| 434 | } |
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| 435 | return; |
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| 436 | } |
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| 437 | |
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| 438 | // Otherwise invoke base class method... |
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| 439 | G4VSceneHandler::RequestPrimitives (solid); |
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| 440 | } |
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| 441 | |
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| 442 | G4int G4OpenGLStoredSceneHandler::fSceneIdCount = 0; |
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| 443 | |
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| 444 | #endif |
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