Gabriele Cosmo
1326 lines
43 KiB
C++
1326 lines
43 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: G4OpenGLSceneHandler.cc 99503 2016-09-26 07:17:29Z gcosmo $
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//
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//
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// Andrew Walkden 27th March 1996
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// OpenGL stored scene - creates OpenGL display lists.
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// OpenGL immediate scene - draws immediately to buffer
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// (saving space on server).
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#ifdef G4VIS_BUILD_OPENGL_DRIVER
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#include "G4OpenGLSceneHandler.hh"
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#include "G4OpenGLViewer.hh"
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#include "G4OpenGLTransform3D.hh"
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#include "G4Point3D.hh"
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#include "G4Normal3D.hh"
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#include "G4Transform3D.hh"
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#include "G4Polyline.hh"
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#include "G4Polymarker.hh"
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#include "G4Text.hh"
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#include "G4Circle.hh"
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#include "G4Square.hh"
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#include "G4VMarker.hh"
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#include "G4Polyhedron.hh"
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#include "G4VisAttributes.hh"
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#include "G4PhysicalVolumeModel.hh"
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#include "G4VPhysicalVolume.hh"
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#include "G4LogicalVolume.hh"
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#include "G4VSolid.hh"
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#include "G4Scene.hh"
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#include "G4VisExtent.hh"
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#include "G4AttHolder.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4RunManager.hh"
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#ifdef G4MULTITHREADED
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#include "G4MTRunManager.hh"
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#endif
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#include "G4Run.hh"
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const GLubyte G4OpenGLSceneHandler::fStippleMaskHashed [128] = {
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,
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0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55
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};
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G4OpenGLSceneHandler::G4OpenGLSceneHandler (G4VGraphicsSystem& system,
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G4int id,
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const G4String& name):
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G4VSceneHandler (system, id, name),
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#ifdef G4OPENGL_VERSION_2
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fEmulate_GL_QUADS(false),
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#endif
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fPickName(0),
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fThreePassCapable(false),
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fSecondPassForTransparencyRequested(false),
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fSecondPassForTransparency(false),
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fThirdPassForNonHiddenMarkersRequested(false),
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fThirdPassForNonHiddenMarkers(false),
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fEdgeFlag(true)
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{
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}
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G4OpenGLSceneHandler::~G4OpenGLSceneHandler ()
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{
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ClearStore ();
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}
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void G4OpenGLSceneHandler::ClearAndDestroyAtts()
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{
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std::map<GLuint, G4AttHolder*>::iterator i;
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for (i = fPickMap.begin(); i != fPickMap.end(); ++i) delete i->second;
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fPickMap.clear();
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}
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G4int G4OpenGLSceneHandler::fEntitiesFlushInterval = 100;
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G4OpenGLSceneHandler::FlushAction
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G4OpenGLSceneHandler::fFlushAction = G4OpenGLSceneHandler::NthEvent;
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void G4OpenGLSceneHandler::ScaledFlush()
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{
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if (fReadyForTransients) {
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// Drawing transients, e.g., trajectories.
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switch (fFlushAction) {
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case endOfEvent:
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// If "/vis/scene/endOfEventAction refresh", primitives are flushed at
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// end of event anyway.
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// But if "/vis/scene/endOfEventAction accumulate", ShowView is not
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// called until end of run, so we have to watch for a new event.
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if (fpScene->GetRefreshAtEndOfEvent()) return;
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else {
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// Get event from modeling parameters
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const G4Event* thisEvent = fpModel->GetModelingParameters()->GetEvent();
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if (!thisEvent) {glFlush(); return;}
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G4int thisEventID = thisEvent->GetEventID();
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static G4int lastEventID = 0;
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if (thisEventID != lastEventID) {
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glFlush();
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lastEventID = thisEventID;
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}
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}
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break;
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case endOfRun:
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// If "/vis/scene/endOfRunAction refresh", primitives are flushed at
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// end of run anyway.
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// If "/vis/scene/endOfRunAction accumulate", ShowView is never called
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// so we have to watch for a new run.
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if (fpScene->GetRefreshAtEndOfRun()) return;
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else {
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G4RunManager* runMan = G4RunManager::GetRunManager();
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#ifdef G4MULTITHREADED
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if (G4Threading::IsMultithreadedApplication()) {
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runMan = G4MTRunManager::GetMasterRunManager();
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}
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#endif
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if (!runMan) {glFlush(); return;}
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const G4Run* thisRun = runMan->GetCurrentRun();
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if (!thisRun) {glFlush(); return;}
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G4int thisRunID = thisRun->GetRunID();
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static G4int lastRunID = 0;
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if (thisRunID != lastRunID) {
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glFlush();
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lastRunID = thisRunID;
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}
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}
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break;
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case eachPrimitive:
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// This is equivalent to numeric with fEntitiesFlushInterval == 1.
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fEntitiesFlushInterval = 1;
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// Fall through to NthPrimitive.
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case NthPrimitive:
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{ // Encapsulate in scope {} brackets to satisfy Windows.
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static G4int primitivesWaitingToBeFlushed = 0;
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primitivesWaitingToBeFlushed++;
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if (primitivesWaitingToBeFlushed < fEntitiesFlushInterval) return;
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glFlush();
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primitivesWaitingToBeFlushed = 0;
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break;
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}
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case NthEvent:
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// If "/vis/scene/endOfEventAction refresh", primitives are flushed at
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// end of event anyway.
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if (fpScene->GetRefreshAtEndOfEvent()) return;
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else {
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// Get event from modeling parameters
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const G4Event* thisEvent = fpModel->GetModelingParameters()->GetEvent();
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G4int thisEventID = thisEvent->GetEventID();
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static G4int lastEventID = 0;
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if (thisEventID != lastEventID) {
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static G4int eventsWaitingToBeFlushed = 0;
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eventsWaitingToBeFlushed++;
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if (eventsWaitingToBeFlushed < fEntitiesFlushInterval) return;
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glFlush();
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eventsWaitingToBeFlushed = 0;
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lastEventID = thisEventID;
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}
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}
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break;
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case never:
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break;
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default:
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break;
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}
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}
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else
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{
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// For run duration model drawing (detector drawing):
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// Immediate mode: a huge speed up is obtained if flushes are scaled.
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// Stored mode: no discernable difference since drawing is done to the
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// back buffer and then swapped.
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// So eachPrimitive and NthPrimitive make sense. But endOfEvent and
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// endOfRun are treated as "no action", i.e., a flush will only be issued,
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// as happens anyway, when drawing is complete.
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switch (fFlushAction) {
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case endOfEvent:
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break;
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case endOfRun:
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break;
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case eachPrimitive:
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// This is equivalent to NthPrimitive with fEntitiesFlushInterval == 1.
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fEntitiesFlushInterval = 1;
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// Fall through to NthPrimitive.
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case NthPrimitive:
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{ // Encapsulate in scope {} brackets to satisfy Windows.
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static G4int primitivesWaitingToBeFlushed = 0;
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primitivesWaitingToBeFlushed++;
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if (primitivesWaitingToBeFlushed < fEntitiesFlushInterval) return;
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glFlush();
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primitivesWaitingToBeFlushed = 0;
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break;
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}
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case NthEvent:
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break;
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case never:
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break;
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default:
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break;
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}
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}
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}
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void G4OpenGLSceneHandler::ProcessScene()
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{
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fThreePassCapable = true;
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G4VSceneHandler::ProcessScene();
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// Repeat if required...
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if (fSecondPassForTransparencyRequested) {
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fSecondPassForTransparency = true;
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G4VSceneHandler::ProcessScene();
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fSecondPassForTransparency = false;
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fSecondPassForTransparencyRequested = false;
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}
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// And again if required...
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if (fThirdPassForNonHiddenMarkersRequested) {
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fThirdPassForNonHiddenMarkers = true;
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G4VSceneHandler::ProcessScene();
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fThirdPassForNonHiddenMarkers = false;
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fThirdPassForNonHiddenMarkersRequested = false;
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}
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fThreePassCapable = false;
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}
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void G4OpenGLSceneHandler::PreAddSolid
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(const G4Transform3D& objectTransformation,
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const G4VisAttributes& visAttribs)
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{
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G4VSceneHandler::PreAddSolid (objectTransformation, visAttribs);
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}
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void G4OpenGLSceneHandler::BeginPrimitives
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(const G4Transform3D& objectTransformation)
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{
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G4VSceneHandler::BeginPrimitives (objectTransformation);
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}
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void G4OpenGLSceneHandler::EndPrimitives ()
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{
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G4VSceneHandler::EndPrimitives ();
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}
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void G4OpenGLSceneHandler::BeginPrimitives2D
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(const G4Transform3D& objectTransformation)
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{
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G4VSceneHandler::BeginPrimitives2D (objectTransformation);
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}
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void G4OpenGLSceneHandler::EndPrimitives2D ()
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{
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G4VSceneHandler::EndPrimitives2D ();
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}
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G4VSolid* G4OpenGLSceneHandler::CreateSectionSolid ()
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{
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return G4VSceneHandler::CreateSectionSolid();
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// If clipping done in G4OpenGLViewer::SetView
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// return 0;
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}
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G4VSolid* G4OpenGLSceneHandler::CreateCutawaySolid ()
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{
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// Cutaway done in G4OpenGLViewer::SetView.
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return 0;
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// Else
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// return G4VSceneHandler::CreateCutawaySolid();
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}
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void G4OpenGLSceneHandler::AddPrimitive (const G4Polyline& line)
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{
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G4int nPoints = line.size ();
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if (nPoints <= 0) return;
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// Note: colour and depth test treated in sub-class.
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#ifndef G4OPENGL_VERSION_2
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glDisable (GL_LIGHTING);
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#endif
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G4double lineWidth = GetLineWidth(fpVisAttribs);
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// Need access to method in G4OpenGLViewer. static_cast doesn't
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// work with a virtual base class, so use dynamic_cast. No need to
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// test the outcome since viewer is guaranteed to be a
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// G4OpenGLViewer, but test it anyway to keep Coverity happy.
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G4OpenGLViewer* pGLViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
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if (pGLViewer) pGLViewer->ChangeLineWidth(lineWidth);
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fEdgeFlag = true;
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#ifndef G4OPENGL_VERSION_2
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glBegin (GL_LINE_STRIP);
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// No ned glEdgeFlag for lines :
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// Boundary and nonboundary edge flags on vertices are significant only if GL_POLYGON_MODE is set to GL_POINT or GL_LINE. See glPolygonMode.
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// glEdgeFlag (GL_TRUE);
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for (G4int iPoint = 0; iPoint < nPoints; iPoint++) {
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G4double x, y, z;
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x = line[iPoint].x();
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y = line[iPoint].y();
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z = line[iPoint].z();
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glVertex3d (x, y, z);
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}
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glEnd ();
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#else
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glBeginVBO(GL_LINE_STRIP);
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for (G4int iPoint = 0; iPoint < nPoints; iPoint++) {
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fOglVertex.push_back(line[iPoint].x());
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fOglVertex.push_back(line[iPoint].y());
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fOglVertex.push_back(line[iPoint].z());
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// normal
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fOglVertex.push_back(0);
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fOglVertex.push_back(0);
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fOglVertex.push_back(1);
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}
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glEndVBO();
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#endif
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}
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void G4OpenGLSceneHandler::AddPrimitive (const G4Polymarker& polymarker)
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{
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if (polymarker.size() == 0) {
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return;
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}
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// Note: colour and depth test treated in sub-class.
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#ifndef G4OPENGL_VERSION_2
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glDisable (GL_LIGHTING);
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#endif
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MarkerSizeType sizeType;
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G4double size = GetMarkerSize(polymarker, sizeType);
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// Need access to method in G4OpenGLViewer. static_cast doesn't
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// work with a virtual base class, so use dynamic_cast. No need to
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// test the outcome since viewer is guaranteed to be a
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// G4OpenGLViewer, but test it anyway to keep Coverity happy.
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G4OpenGLViewer* pGLViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
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if (!pGLViewer) return;
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if (sizeType == world) { // Size specified in world coordinates.
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G4double lineWidth = GetLineWidth(fpVisAttribs);
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pGLViewer->ChangeLineWidth(lineWidth);
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G4VMarker::FillStyle style = polymarker.GetFillStyle();
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// G4bool filled = false; Not actually used - comment out to prevent compiler warnings (JA).
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static G4bool hashedWarned = false;
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switch (style) {
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case G4VMarker::noFill:
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glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
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glEdgeFlag (GL_TRUE);
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//filled = false;
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break;
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case G4VMarker::hashed:
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if (!hashedWarned) {
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G4cout << "Hashed fill style in G4OpenGLSceneHandler."
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<< "\n Not implemented. Using G4VMarker::filled."
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<< G4endl;
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hashedWarned = true;
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}
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// Maybe use
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//glPolygonStipple (fStippleMaskHashed);
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// Drop through to filled...
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case G4VMarker::filled:
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glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
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//filled = true;
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break;
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}
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}
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// Draw...
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if (sizeType == world) { // Size specified in world coordinates.
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G4int nSides;
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G4double startPhi;
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switch (polymarker.GetMarkerType()) {
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default:
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case G4Polymarker::dots:
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size = 1.;
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// Drop through to circles
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case G4Polymarker::circles:
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nSides = GetNoOfSides(fpVisAttribs);
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startPhi = 0.;
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break;
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case G4Polymarker::squares:
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nSides = 4;
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startPhi = -pi / 4.;
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break;
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}
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const G4Vector3D& viewpointDirection =
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fpViewer -> GetViewParameters().GetViewpointDirection();
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const G4Vector3D& up = fpViewer->GetViewParameters().GetUpVector();
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const G4double dPhi = twopi / nSides;
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const G4double radius = size / 2.;
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G4Vector3D start = radius * (up.cross(viewpointDirection)).unit();
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G4double phi;
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G4int i;
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for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
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fEdgeFlag = true;
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#ifndef G4OPENGL_VERSION_2
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glBegin (GL_POLYGON);
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for (i = 0, phi = startPhi; i < nSides; i++, phi += dPhi) {
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G4Vector3D r = start; r.rotate(phi, viewpointDirection);
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G4Vector3D p = polymarker[iPoint] + r;
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glVertex3d (p.x(), p.y(), p.z());
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}
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glEnd ();
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#else
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glBeginVBO (GL_TRIANGLE_STRIP);
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for (i = 0, phi = startPhi; i < nSides; i++, phi += dPhi) {
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G4Vector3D r = start; r.rotate(phi, viewpointDirection);
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G4Vector3D p = polymarker[iPoint] + r;
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fOglVertex.push_back(p.x());
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fOglVertex.push_back(p.y());
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fOglVertex.push_back(p.z());
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// normal
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fOglVertex.push_back(0);
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fOglVertex.push_back(0);
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fOglVertex.push_back(1);
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}
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glEndVBO ();
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#endif
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}
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} else { // Size specified in screen (window) coordinates.
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pGLViewer->ChangePointSize(size);
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|
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//Antialiasing only for circles
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#ifndef G4OPENGL_VERSION_2
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switch (polymarker.GetMarkerType()) {
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default:
|
|
case G4Polymarker::dots:
|
|
case G4Polymarker::circles:
|
|
glEnable (GL_POINT_SMOOTH); break;
|
|
case G4Polymarker::squares:
|
|
glDisable (GL_POINT_SMOOTH); break;
|
|
}
|
|
#endif
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glBegin (GL_POINTS);
|
|
for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
|
|
G4Point3D centre = polymarker[iPoint];
|
|
glVertex3d(centre.x(),centre.y(),centre.z());
|
|
}
|
|
glEnd();
|
|
#else
|
|
glBeginVBO(GL_POINTS);
|
|
|
|
for (size_t iPoint = 0; iPoint < polymarker.size (); iPoint++) {
|
|
fOglVertex.push_back(polymarker[iPoint].x());
|
|
fOglVertex.push_back(polymarker[iPoint].y());
|
|
fOglVertex.push_back(polymarker[iPoint].z());
|
|
fOglVertex.push_back(0);
|
|
fOglVertex.push_back(0);
|
|
fOglVertex.push_back(1);
|
|
}
|
|
glEndVBO();
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddPrimitive (const G4Text& text) {
|
|
// Pass to specific viewer via virtual function DrawText.
|
|
// FIXME : Not ready for OPENGL2 for the moment
|
|
#ifdef G4OPENGL_VERSION_2
|
|
return;
|
|
#endif
|
|
G4OpenGLViewer* pGLViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
|
|
if (pGLViewer) pGLViewer->DrawText(text);
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddPrimitive (const G4Circle& circle) {
|
|
G4Polymarker oneCircle(circle);
|
|
oneCircle.push_back(circle.GetPosition());
|
|
oneCircle.SetMarkerType(G4Polymarker::circles);
|
|
// Call this AddPrimitive to avoid re-doing sub-class code.
|
|
G4OpenGLSceneHandler::AddPrimitive(oneCircle);
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddPrimitive (const G4Square& square) {
|
|
G4Polymarker oneSquare(square);
|
|
oneSquare.push_back(square.GetPosition());
|
|
oneSquare.SetMarkerType(G4Polymarker::squares);
|
|
// Call this AddPrimitive to avoid re-doing sub-class code.
|
|
G4OpenGLSceneHandler::AddPrimitive(oneSquare);
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddPrimitive (const G4Scale& scale)
|
|
{
|
|
G4VSceneHandler::AddPrimitive(scale);
|
|
}
|
|
|
|
//Method for handling G4Polyhedron objects for drawing solids.
|
|
void G4OpenGLSceneHandler::AddPrimitive (const G4Polyhedron& polyhedron) {
|
|
|
|
// Assume all facets are planar convex quadrilaterals.
|
|
// Draw each facet individually
|
|
|
|
if (polyhedron.GetNoFacets() == 0) return;
|
|
|
|
// Need access to data in G4OpenGLViewer. static_cast doesn't work
|
|
// with a virtual base class, so use dynamic_cast.
|
|
G4OpenGLViewer* pGLViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
|
|
if (!pGLViewer) return;
|
|
|
|
// Get view parameters that the user can force through the vis
|
|
// attributes, thereby over-riding the current view parameter.
|
|
G4ViewParameters::DrawingStyle drawing_style = GetDrawingStyle (fpVisAttribs);
|
|
|
|
// Note that in stored mode, because this call gets embedded in a display
|
|
// list, it is the colour _at the time of_ creation of the display list, so
|
|
// even if the colour is changed, for example, by interaction with a Qt
|
|
// window, current_colour does not change.
|
|
GLfloat* painting_colour;
|
|
GLfloat current_colour [4];
|
|
glGetFloatv (GL_CURRENT_COLOR, current_colour);
|
|
|
|
G4bool isTransparent = false;
|
|
if (current_colour[3] < 1.) { // This object is transparent
|
|
isTransparent = true;
|
|
}
|
|
|
|
|
|
if (drawing_style == G4ViewParameters::hlr) {
|
|
// This is the colour used to paint surfaces in hlr mode.
|
|
GLfloat clear_colour[4];
|
|
glGetFloatv (GL_COLOR_CLEAR_VALUE, clear_colour);
|
|
painting_colour = clear_colour;
|
|
} else { // drawing_style == G4ViewParameters::hlhsr
|
|
painting_colour = current_colour;
|
|
}
|
|
|
|
G4double lineWidth = GetLineWidth(fpVisAttribs);
|
|
pGLViewer->ChangeLineWidth(lineWidth);
|
|
|
|
G4bool isAuxEdgeVisible = GetAuxEdgeVisible (fpVisAttribs);
|
|
|
|
G4bool clipping = pGLViewer->fVP.IsSection() || pGLViewer->fVP.IsCutaway();
|
|
|
|
// Lighting disabled unless otherwise requested
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glDisable (GL_LIGHTING);
|
|
#endif
|
|
|
|
switch (drawing_style) {
|
|
case (G4ViewParameters::hlhsr):
|
|
// Set up as for hidden line removal but paint polygon faces later...
|
|
case (G4ViewParameters::hlr):
|
|
glEnable (GL_STENCIL_TEST);
|
|
// The stencil buffer is cleared in G4OpenGLViewer::ClearView.
|
|
// The procedure below leaves it clear.
|
|
glStencilFunc (GL_ALWAYS, 0, 1);
|
|
glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT);
|
|
glEnable (GL_DEPTH_TEST);
|
|
glDepthFunc (GL_LEQUAL);
|
|
if (isTransparent) {
|
|
// Transparent...
|
|
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
|
|
glEnable(GL_COLOR_MATERIAL);
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
|
|
} else {
|
|
// Opaque...
|
|
if (clipping) {
|
|
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
|
|
glEnable(GL_COLOR_MATERIAL);
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
|
|
} else {
|
|
glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE);
|
|
glEnable(GL_COLOR_MATERIAL);
|
|
glEnable (GL_CULL_FACE);
|
|
glCullFace (GL_BACK);
|
|
glPolygonMode (GL_FRONT, GL_LINE);
|
|
}
|
|
}
|
|
break;
|
|
case (G4ViewParameters::hsr):
|
|
glEnable (GL_DEPTH_TEST);
|
|
glDepthFunc (GL_LEQUAL);
|
|
if (isTransparent) {
|
|
// Transparent...
|
|
glDepthMask (GL_FALSE); // Make depth buffer read-only.
|
|
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glEnable(GL_COLOR_MATERIAL);
|
|
#endif
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
|
|
} else {
|
|
// Opaque...
|
|
glDepthMask (GL_TRUE); // Make depth buffer writable (default).
|
|
if (clipping) {
|
|
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
|
|
glEnable(GL_COLOR_MATERIAL);
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
|
|
} else {
|
|
glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE);
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glEnable(GL_COLOR_MATERIAL);
|
|
#endif
|
|
glEnable (GL_CULL_FACE);
|
|
glCullFace (GL_BACK);
|
|
glPolygonMode (GL_FRONT, GL_FILL);
|
|
}
|
|
}
|
|
#ifndef G4OPENGL_VERSION_2
|
|
if (!fProcessing2D) glEnable (GL_LIGHTING);
|
|
#endif
|
|
break;
|
|
case (G4ViewParameters::wireframe):
|
|
default:
|
|
glEnable (GL_DEPTH_TEST);
|
|
glDepthFunc (GL_LEQUAL); //??? was GL_ALWAYS
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
|
|
break;
|
|
}
|
|
|
|
//Loop through all the facets...
|
|
fEdgeFlag = true;
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glBegin (GL_QUADS);
|
|
glEdgeFlag (GL_TRUE);
|
|
#else
|
|
fEmulate_GL_QUADS = true;
|
|
glBeginVBO(GL_TRIANGLE_STRIP);
|
|
#endif
|
|
G4bool notLastFace;
|
|
do {
|
|
|
|
//First, find vertices, edgeflags and normals and note "not last facet"...
|
|
G4Point3D vertex[4];
|
|
G4int edgeFlag[4];
|
|
G4Normal3D normals[4];
|
|
G4int nEdges;
|
|
notLastFace = polyhedron.GetNextFacet(nEdges, vertex, edgeFlag, normals);
|
|
|
|
//Loop through the four edges of each G4Facet...
|
|
for(G4int edgeCount = 0; edgeCount < nEdges; ++edgeCount) {
|
|
// Check to see if edge is visible or not...
|
|
if (isAuxEdgeVisible) {
|
|
edgeFlag[edgeCount] = 1;
|
|
}
|
|
#ifndef G4OPENGL_VERSION_2
|
|
if (edgeFlag[edgeCount] > 0) {
|
|
if (fEdgeFlag != true) {
|
|
glEdgeFlag (GL_TRUE);
|
|
fEdgeFlag = true;
|
|
}
|
|
} else {
|
|
if (fEdgeFlag != false) {
|
|
glEdgeFlag (GL_FALSE);
|
|
fEdgeFlag = false;
|
|
}
|
|
}
|
|
glNormal3d (normals[edgeCount].x(),
|
|
normals[edgeCount].y(),
|
|
normals[edgeCount].z());
|
|
glVertex3d (vertex[edgeCount].x(),
|
|
vertex[edgeCount].y(),
|
|
vertex[edgeCount].z());
|
|
#else
|
|
|
|
fOglVertex.push_back(vertex[edgeCount].x());
|
|
fOglVertex.push_back(vertex[edgeCount].y());
|
|
fOglVertex.push_back(vertex[edgeCount].z());
|
|
|
|
fOglVertex.push_back(normals[edgeCount].x());
|
|
fOglVertex.push_back(normals[edgeCount].y());
|
|
fOglVertex.push_back(normals[edgeCount].z());
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
// HepPolyhedron produces triangles too; in that case add an extra
|
|
// vertex identical to first...
|
|
if (nEdges == 3) {
|
|
G4int edgeCount = 3;
|
|
normals[edgeCount] = normals[0];
|
|
vertex[edgeCount] = vertex[0];
|
|
#ifndef G4OPENGL_VERSION_2
|
|
edgeFlag[edgeCount] = -1;
|
|
if (fEdgeFlag != false) {
|
|
glEdgeFlag (GL_FALSE);
|
|
fEdgeFlag = false;
|
|
}
|
|
|
|
glNormal3d (normals[edgeCount].x(),
|
|
normals[edgeCount].y(),
|
|
normals[edgeCount].z());
|
|
glVertex3d (vertex[edgeCount].x(),
|
|
vertex[edgeCount].y(),
|
|
vertex[edgeCount].z());
|
|
#else
|
|
fOglVertex.push_back(vertex[edgeCount].x());
|
|
fOglVertex.push_back(vertex[edgeCount].y());
|
|
fOglVertex.push_back(vertex[edgeCount].z());
|
|
|
|
fOglVertex.push_back(normals[edgeCount].x());
|
|
fOglVertex.push_back(normals[edgeCount].y());
|
|
fOglVertex.push_back(normals[edgeCount].z());
|
|
|
|
#endif
|
|
}
|
|
// Trap situation where number of edges is > 4...
|
|
if (nEdges > 4) {
|
|
G4cerr <<
|
|
"G4OpenGLSceneHandler::AddPrimitive(G4Polyhedron): WARNING"
|
|
"\n G4Polyhedron facet with " << nEdges << " edges" << G4endl;
|
|
}
|
|
|
|
|
|
// Do it all over again (twice) for hlr...
|
|
if (drawing_style == G4ViewParameters::hlr ||
|
|
drawing_style == G4ViewParameters::hlhsr) {
|
|
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glDisable(GL_COLOR_MATERIAL); // Revert to glMaterial for hlr/sr.
|
|
#endif
|
|
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glEnd (); // Placed here to balance glBegin above, allowing GL
|
|
#else
|
|
glEndVBO();
|
|
#endif
|
|
// state changes below, then glBegin again. Avoids
|
|
// having glBegin/End pairs *inside* loop in the more
|
|
// usual case of no hidden line removal.
|
|
|
|
// Lighting disabled unless otherwise requested
|
|
glDisable (GL_LIGHTING);
|
|
|
|
// Draw through stencil...
|
|
glStencilFunc (GL_EQUAL, 0, 1);
|
|
glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);
|
|
if (drawing_style == G4ViewParameters::hlhsr) {
|
|
if (!fProcessing2D) glEnable (GL_LIGHTING);
|
|
}
|
|
glEnable (GL_DEPTH_TEST);
|
|
glDepthFunc (GL_LEQUAL);
|
|
if (isTransparent) {
|
|
// Transparent...
|
|
glDepthMask (GL_FALSE); // Make depth buffer read-only.
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
|
|
} else {
|
|
// Opaque...
|
|
glDepthMask (GL_TRUE); // Make depth buffer writable (default).
|
|
if (clipping) {
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
|
|
} else {
|
|
glEnable (GL_CULL_FACE);
|
|
glCullFace (GL_BACK);
|
|
glPolygonMode (GL_FRONT, GL_FILL);
|
|
}
|
|
}
|
|
if (drawing_style == G4ViewParameters::hlr) {
|
|
if (isTransparent) {
|
|
// Transparent - don't paint...
|
|
goto end_of_drawing_through_stencil;
|
|
}
|
|
}
|
|
if (isTransparent) {
|
|
// Transparent...
|
|
glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, painting_colour);
|
|
} else {
|
|
// Opaque...
|
|
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, painting_colour);
|
|
}
|
|
glColor4fv (painting_colour);
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glBegin (GL_QUADS);
|
|
glEdgeFlag (GL_TRUE);
|
|
fEdgeFlag = true;
|
|
#else
|
|
fEmulate_GL_QUADS = true;
|
|
glBeginVBO(GL_TRIANGLE_STRIP);
|
|
#endif
|
|
|
|
for (int edgeCount = 0; edgeCount < 4; ++edgeCount) {
|
|
#ifndef G4OPENGL_VERSION_2
|
|
if (edgeFlag[edgeCount] > 0) {
|
|
if (fEdgeFlag != true) {
|
|
glEdgeFlag (GL_TRUE);
|
|
fEdgeFlag = true;
|
|
}
|
|
} else {
|
|
if (fEdgeFlag != false) {
|
|
glEdgeFlag (GL_FALSE);
|
|
fEdgeFlag = false;
|
|
}
|
|
}
|
|
glNormal3d (normals[edgeCount].x(),
|
|
normals[edgeCount].y(),
|
|
normals[edgeCount].z());
|
|
glVertex3d (vertex[edgeCount].x(),
|
|
vertex[edgeCount].y(),
|
|
vertex[edgeCount].z());
|
|
#else
|
|
fOglVertex.push_back(vertex[edgeCount].x());
|
|
fOglVertex.push_back(vertex[edgeCount].y());
|
|
fOglVertex.push_back(vertex[edgeCount].z());
|
|
|
|
fOglVertex.push_back(normals[edgeCount].x());
|
|
fOglVertex.push_back(normals[edgeCount].y());
|
|
fOglVertex.push_back(normals[edgeCount].z());
|
|
|
|
#endif
|
|
}
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glEnd ();
|
|
#else
|
|
glEndVBO();
|
|
#endif
|
|
end_of_drawing_through_stencil:
|
|
|
|
// and once more to reset the stencil bits...
|
|
glStencilFunc (GL_ALWAYS, 0, 1);
|
|
glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT);
|
|
glDepthFunc (GL_LEQUAL); // to make sure line gets drawn.
|
|
if (isTransparent) {
|
|
// Transparent...
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
|
|
} else {
|
|
// Opaque...
|
|
if (clipping) {
|
|
glDisable (GL_CULL_FACE);
|
|
glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
|
|
} else {
|
|
glEnable (GL_CULL_FACE);
|
|
glCullFace (GL_BACK);
|
|
glPolygonMode (GL_FRONT, GL_LINE);
|
|
}
|
|
}
|
|
glDisable (GL_LIGHTING);
|
|
glColor4fv (current_colour);
|
|
fEdgeFlag = true;
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glBegin (GL_QUADS);
|
|
glEdgeFlag (GL_TRUE);
|
|
fEdgeFlag = true;
|
|
#else
|
|
fEmulate_GL_QUADS = true;
|
|
glBeginVBO(GL_TRIANGLE_STRIP);
|
|
#endif
|
|
for (int edgeCount = 0; edgeCount < 4; ++edgeCount) {
|
|
#ifndef G4OPENGL_VERSION_2
|
|
if (edgeFlag[edgeCount] > 0) {
|
|
if (fEdgeFlag != true) {
|
|
glEdgeFlag (GL_TRUE);
|
|
fEdgeFlag = true;
|
|
}
|
|
} else {
|
|
if (fEdgeFlag != false) {
|
|
glEdgeFlag (GL_FALSE);
|
|
fEdgeFlag = false;
|
|
}
|
|
}
|
|
glNormal3d (normals[edgeCount].x(),
|
|
normals[edgeCount].y(),
|
|
normals[edgeCount].z());
|
|
glVertex3d (vertex[edgeCount].x(),
|
|
vertex[edgeCount].y(),
|
|
vertex[edgeCount].z());
|
|
#else
|
|
fOglVertex.push_back(vertex[edgeCount].x());
|
|
fOglVertex.push_back(vertex[edgeCount].y());
|
|
fOglVertex.push_back(vertex[edgeCount].z());
|
|
|
|
fOglVertex.push_back(normals[edgeCount].x());
|
|
fOglVertex.push_back(normals[edgeCount].y());
|
|
fOglVertex.push_back(normals[edgeCount].z());
|
|
|
|
#endif
|
|
}
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glEnd ();
|
|
#else
|
|
glEndVBO();
|
|
#endif
|
|
|
|
glDepthFunc (GL_LEQUAL); // Revert for next facet.
|
|
fEdgeFlag = true;
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glBegin (GL_QUADS); // Ready for next facet. GL
|
|
glEdgeFlag (GL_TRUE);
|
|
fEdgeFlag = true;
|
|
// says it ignores incomplete
|
|
// quadrilaterals, so final empty
|
|
// glBegin/End sequence should be OK.
|
|
#else
|
|
fEmulate_GL_QUADS = true;
|
|
glBeginVBO(GL_TRIANGLE_STRIP);
|
|
#endif
|
|
}
|
|
} while (notLastFace);
|
|
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glEnd ();
|
|
#else
|
|
|
|
// FIXME: du grand n'importe quoi en test
|
|
// Cube optimization
|
|
|
|
// store old DrawType because in case of optimization it could be changed
|
|
GLenum oldDrawArrayType = fDrawArrayType;
|
|
|
|
if (dynamic_cast<const G4PolyhedronTrd2*>(&polyhedron)) {
|
|
// OptimizeVBOForTrd();
|
|
} else if (dynamic_cast<const G4PolyhedronCons*>(&polyhedron)) {
|
|
// OptimizeVBOForCons((polyhedron.GetNoVertices()-2)/2 ); // top + bottom + all faces
|
|
}
|
|
|
|
glEndVBO();
|
|
fDrawArrayType = oldDrawArrayType;
|
|
#endif
|
|
|
|
glDisable (GL_STENCIL_TEST); // Revert to default for next primitive.
|
|
glDepthMask (GL_TRUE); // Revert to default for next primitive.
|
|
#ifndef G4OPENGL_VERSION_2
|
|
glDisable (GL_LIGHTING); // Revert to default for next primitive.
|
|
#endif
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddCompound(const G4VTrajectory& traj) {
|
|
G4VSceneHandler::AddCompound(traj); // For now.
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddCompound(const G4VHit& hit) {
|
|
G4VSceneHandler::AddCompound(hit); // For now.
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddCompound(const G4VDigi& digi) {
|
|
G4VSceneHandler::AddCompound(digi); // For now.
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddCompound(const G4THitsMap<G4double>& hits) {
|
|
G4VSceneHandler::AddCompound(hits); // For now.
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::AddCompound(const G4THitsMap<G4StatDouble>& hits) {
|
|
G4VSceneHandler::AddCompound(hits); // For now.
|
|
}
|
|
|
|
|
|
#ifdef G4OPENGL_VERSION_2
|
|
|
|
// Optimize vertex and indices in order to render less vertex in OpenGL VBO/IBO
|
|
void G4OpenGLSceneHandler::OptimizeVBOForTrd(){
|
|
|
|
/* HOW IT IS BUILD (as we receive it from fOglVertex :
|
|
*/
|
|
|
|
std::vector<double> vertices;
|
|
vertices.insert (vertices.end(),fOglVertex.begin(),fOglVertex.begin()+6*6); // ABCDEF
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+9*6,fOglVertex.begin()+9*6+6); // G
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+13*6,fOglVertex.begin()+13*6+6); // H
|
|
fOglVertex = vertices;
|
|
|
|
int myarray [] = {
|
|
3,2,0,1,4,5,7,6, 6,0,4,3,7,2,6,1,5
|
|
};
|
|
fOglIndices.insert(fOglIndices.begin(), myarray, myarray+17/*36*/);
|
|
|
|
fDrawArrayType = GL_TRIANGLE_STRIP;
|
|
}
|
|
|
|
// Optimize vertex and indices in order to render less vertex in OpenGL VBO/IBO
|
|
void G4OpenGLSceneHandler::OptimizeVBOForCons(G4int aNoFaces){
|
|
// Optimized, 1st level : 10f/15sec with 1000 cones
|
|
// DrawElements:208 vertex and 605 (2*100+2*100+2*100+5) indices for a 100 face cone
|
|
|
|
/* surface of polycone : could be optimized
|
|
for 100 faces :
|
|
- 100*4 = 400 points
|
|
- 100*2+2 = 202 points with TRIANGLE_STRIP
|
|
Total :
|
|
n*4+n*4+n*4 = n*12
|
|
optimize : n*2+2+1+n+1 = n*3+3 (factor 4)
|
|
but could do better : n faces should give = n*2+2
|
|
*/
|
|
|
|
/*
|
|
0
|
|
/ \
|
|
2---4 6 ....2
|
|
| |
|
|
3---5 7 ....3
|
|
\ /
|
|
1
|
|
*/
|
|
// First, faces
|
|
std::vector<double> vertices;
|
|
|
|
// Add bottom and top vertex
|
|
// aNoFaces*4*6+6 : nb Faces * 4 points per face * 6 vertex by point + 1 point offset
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+ (aNoFaces*4)*6,fOglVertex.begin()+(aNoFaces*4)*6+6); // 0
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+ (aNoFaces*8+1)*6,fOglVertex.begin()+(aNoFaces*8+1)*6+6); // 1
|
|
|
|
// Add facets points
|
|
G4int posInVertice;
|
|
for (G4int a = 0; a<aNoFaces; a++) {
|
|
posInVertice = a*4*6;
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+posInVertice,fOglVertex.begin()+posInVertice+1*6+6); // AB
|
|
}
|
|
vertices.insert (vertices.end(),fOglVertex.begin(),fOglVertex.begin()+1*6*6); // AB
|
|
fOglVertex = vertices;
|
|
|
|
// Add indices for top :
|
|
// simple version : 0-2-0-4-0-6-0-8-0-10..
|
|
// optimized version : 2-0-4-6- 6-0-8-10.. but we have to deal with odd faces numbers
|
|
for (G4int a=0; a<aNoFaces; a++) {
|
|
fOglIndices.push_back(0);
|
|
fOglIndices.push_back(a*2+2);
|
|
}
|
|
// close strip
|
|
fOglIndices.push_back(0);
|
|
fOglIndices.push_back(2);
|
|
|
|
// Add indices for faces
|
|
for (G4int a = 0; a<aNoFaces; a++) {
|
|
fOglIndices.push_back(a*2+2);
|
|
fOglIndices.push_back(a*2+1+2);
|
|
}
|
|
fOglIndices.push_back(2);
|
|
fOglIndices.push_back(2+1);
|
|
|
|
// Second : top
|
|
// 3-1-5-1-7-1-9-1..
|
|
for (G4int a=0; a<aNoFaces; a++) {
|
|
fOglIndices.push_back(a*2+3);
|
|
fOglIndices.push_back(1);
|
|
}
|
|
// close strip
|
|
fOglIndices.push_back(0+3);
|
|
|
|
fDrawArrayType = GL_TRIANGLE_STRIP;
|
|
fEmulate_GL_QUADS = false;
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::glBeginVBO(GLenum type) {
|
|
fDrawArrayType = type;
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
glGenBuffers(1,&fVertexBufferObject);
|
|
glGenBuffers(1,&fIndicesBufferObject);
|
|
#else
|
|
fVertexBufferObject = glCreateBuffer(); //glGenBuffer(1,fVertexBufferObject_2)
|
|
fIndicesBufferObject = glCreateBuffer(); //glGenBuffer(1,fIndicesBufferObject_2)
|
|
#endif
|
|
|
|
// clear data and indices for OpenGL
|
|
fOglVertex.clear();
|
|
fOglIndices.clear();
|
|
}
|
|
|
|
// 2 cases :
|
|
/*
|
|
glDrawArray : if there is no vertex indices : fOglIndices.size() == 0
|
|
glDrawElements : if there is vertex indices : fOglIndices.size() != 0
|
|
|
|
*/
|
|
void G4OpenGLSceneHandler::glEndVBO() {
|
|
if (fOglIndices.size() == 0) {
|
|
|
|
|
|
std::vector<double> vertices;
|
|
// check if it is a GL_QUADS emulation
|
|
if (fEmulate_GL_QUADS == true) {
|
|
fEmulate_GL_QUADS = false;
|
|
// A point has 6 double : Vx Vy Vz Nx Ny Nz
|
|
// A QUAD should be like this
|
|
/*
|
|
0 3/4 7/8 ..
|
|
|
|
1 2/5 6/9 ..
|
|
*/
|
|
// And if 3==4 and 2==5, we should do it like this for a TRIANGLES_STRIP
|
|
/*
|
|
0 4 8 ..
|
|
| / | / |
|
|
1 5 9 ..
|
|
// Optimized, 1st level : 24f/15sec with 10 cones
|
|
// non Optimized, 1st level : 12f/15sec with 10 cones
|
|
*/
|
|
// should be 4 points
|
|
for (unsigned int a=0; a<fOglVertex.size(); a+=6*4) {
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+a,fOglVertex.begin()+a+1*6+6); // 0-1
|
|
// if 2-3 == 4-5, do not add them
|
|
// if differents, we are obliged to create a new GL_TRIANGLE_STRIP
|
|
if (a+4*6+5 < fOglVertex.size()) {
|
|
if ((fOglVertex[a+2*6+0] != fOglVertex[a+5*6+0]) || //Vx for 2 and 5
|
|
(fOglVertex[a+2*6+1] != fOglVertex[a+5*6+1]) || //Vy for 2 and 5
|
|
(fOglVertex[a+2*6+2] != fOglVertex[a+5*6+2]) || //Vz for 2 and 5
|
|
(fOglVertex[a+2*6+3] != fOglVertex[a+5*6+3]) || //Px for 2 and 5
|
|
(fOglVertex[a+2*6+4] != fOglVertex[a+5*6+4]) || //Py for 2 and 5
|
|
(fOglVertex[a+2*6+5] != fOglVertex[a+5*6+5]) || //Pz for 2 and 5
|
|
|
|
(fOglVertex[a+3*6+0] != fOglVertex[a+4*6+0]) || //Vx for 3 and 4
|
|
(fOglVertex[a+3*6+1] != fOglVertex[a+4*6+1]) || //Vy for 3 and 4
|
|
(fOglVertex[a+3*6+2] != fOglVertex[a+4*6+2]) || //Vz for 3 and 4
|
|
(fOglVertex[a+3*6+3] != fOglVertex[a+4*6+3]) || //Px for 3 and 4
|
|
(fOglVertex[a+3*6+4] != fOglVertex[a+4*6+4]) || //Py for 3 and 4
|
|
(fOglVertex[a+3*6+5] != fOglVertex[a+4*6+5])) { //Pz for 3 and 4
|
|
// add last points
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+a+3*6,fOglVertex.begin()+a+3*6+6); // 3
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+a+2*6,fOglVertex.begin()+a+2*6+6); // 2
|
|
// build and send the GL_TRIANGLE_STRIP
|
|
drawVBOArray(vertices);
|
|
vertices.clear();
|
|
}
|
|
} else { // end of volume
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+a+3*6,fOglVertex.begin()+a+3*6+6); // 3
|
|
vertices.insert (vertices.end(),fOglVertex.begin()+a+2*6,fOglVertex.begin()+a+2*6+6); // 2
|
|
}
|
|
}
|
|
fOglVertex = vertices;
|
|
}
|
|
|
|
drawVBOArray(fOglVertex);
|
|
|
|
} else {
|
|
|
|
// Bind VBO
|
|
glBindBuffer(GL_ARRAY_BUFFER, fVertexBufferObject);
|
|
|
|
// Load fOglVertex into VBO
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
int sizeV = fOglVertex.size();
|
|
// FIXME : perhaps a problem withBufferData in OpenGL other than WebGL ?
|
|
// void glBufferData( GLenum target, GLsizeiptr size, const GLvoid * data, GLenum usage);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(double)*sizeV, &fOglVertex[0], GL_STATIC_DRAW);
|
|
#else
|
|
glBufferDatafv(GL_ARRAY_BUFFER, fOglVertex.begin(), fOglVertex.end(), GL_STATIC_DRAW);
|
|
#endif
|
|
|
|
// Bind IBO
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, fIndicesBufferObject);
|
|
|
|
// Load fOglVertex into VBO
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
int sizeI = fOglIndices.size();
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER,sizeof(int)*sizeI, &fOglIndices[0], GL_STATIC_DRAW);
|
|
#else
|
|
glBufferDataiv(GL_ELEMENT_ARRAY_BUFFER, fOglIndices.begin(), fOglIndices.end(), GL_STATIC_DRAW, GL_UNSIGNED_BYTE);
|
|
#endif
|
|
|
|
//----------------------------
|
|
// Draw VBO
|
|
//----------------------------
|
|
glBindBuffer(GL_ARRAY_BUFFER, fVertexBufferObject);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, fIndicesBufferObject);
|
|
|
|
// the fVertexPositionAttribute is inside the G4OpenGLViewer
|
|
G4OpenGLViewer* pGLViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
|
|
if (pGLViewer) {
|
|
glEnableVertexAttribArray(pGLViewer->fVertexPositionAttribute);
|
|
|
|
glVertexAttribPointer(pGLViewer->fVertexPositionAttribute,
|
|
3, // size: Every vertex has an X, Y anc Z component
|
|
GL_FLOAT, // type: They are floats
|
|
GL_FALSE, // normalized: Please, do NOT normalize the vertices
|
|
2*3*4, // stride: The first byte of the next vertex is located this
|
|
// amount of bytes further. The format of the VBO is
|
|
// vx, vy, vz, nx, ny, nz and every element is a
|
|
// Float32, hence 4 bytes large
|
|
0); // offset: The byte position of the first vertex in the buffer
|
|
}
|
|
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, fVertexBufferObject);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, fIndicesBufferObject);
|
|
// glDrawElements(fDrawArrayType, fOglIndices.size(), GL_UNSIGNED_SHORT, 0);
|
|
glDrawElements(fDrawArrayType, fOglIndices.size(), GL_UNSIGNED_SHORT, 0);
|
|
|
|
if (pGLViewer) {
|
|
glDisableVertexAttribArray(pGLViewer->fVertexPositionAttribute);
|
|
}
|
|
|
|
// delete the buffer
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
glDeleteBuffers(1,&fVertexBufferObject);
|
|
#else
|
|
glDeleteBuffer(fVertexBufferObject);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void G4OpenGLSceneHandler::drawVBOArray(std::vector<double> vertices) {
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
glGenBuffers(1,&fVertexBufferObject);
|
|
glGenBuffers(1,&fIndicesBufferObject);
|
|
#else
|
|
fVertexBufferObject = glCreateBuffer(); //glGenBuffer(1,fVertexBufferObject_2)
|
|
fIndicesBufferObject = glCreateBuffer(); //glGenBuffer(1,fIndicesBufferObject_2)
|
|
#endif
|
|
|
|
// Bind this buffer
|
|
glBindBuffer(GL_ARRAY_BUFFER, fVertexBufferObject);
|
|
// Load oglData into VBO
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
int s = vertices.size();
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(double)*s, &vertices[0], GL_STATIC_DRAW);
|
|
#else
|
|
glBufferDatafv(GL_ARRAY_BUFFER, vertices.begin(), vertices.end(), GL_STATIC_DRAW);
|
|
#endif
|
|
|
|
//----------------------------
|
|
// Draw VBO
|
|
//----------------------------
|
|
glBindBuffer(GL_ARRAY_BUFFER, fVertexBufferObject);
|
|
|
|
// the fVertexPositionAttribute is inside the G4OpenGLViewer
|
|
G4OpenGLViewer* pGLViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
|
|
if (pGLViewer) {
|
|
glEnableVertexAttribArray(pGLViewer->fVertexPositionAttribute);
|
|
|
|
// glVertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer)
|
|
|
|
/*
|
|
GL_DOUBLE
|
|
Warning: This section describes legacy OpenGL APIs that have been removed from core OpenGL 3.1 and above (they are only deprecated in OpenGL 3.0). It is recommended that you not use this functionality in your programs.
|
|
|
|
glLoadMatrixd, glRotated and any other function that have to do with the double type. Most GPUs don't support GL_DOUBLE (double) so the driver will convert the data to GL_FLOAT (float) and send to the GPU. If you put GL_DOUBLE data in a VBO, the performance might even be much worst than immediate mode (immediate mode means glBegin, glVertex, glEnd). GL doesn't offer any better way to know what the GPU prefers.
|
|
*/
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
glVertexAttribPointer(pGLViewer->fVertexPositionAttribute,
|
|
3, // size: Every vertex has an X, Y anc Z component
|
|
GL_DOUBLE, // type: They are double
|
|
GL_FALSE, // normalized: Please, do NOT normalize the vertices
|
|
6*sizeof(double), // stride: The first byte of the next vertex is located this
|
|
// amount of bytes further. The format of the VBO is
|
|
// vx, vy, vz, nx, ny, nz and every element is a
|
|
// Float32, hence 4 bytes large
|
|
0); // offset: The byte position of the first vertex in the buffer
|
|
#else
|
|
glVertexAttribPointer(pGLViewer->fVertexPositionAttribute,
|
|
3, // size: Every vertex has an X, Y anc Z component
|
|
GL_FLOAT, // type: They are floats
|
|
GL_FALSE, // normalized: Please, do NOT normalize the vertices
|
|
2*3*4, // stride: The first byte of the next vertex is located this
|
|
// amount of bytes further. The format of the VBO is
|
|
// vx, vy, vz, nx, ny, nz and every element is a
|
|
// Float32, hence 4 bytes large
|
|
0); // offset: The byte position of the first vertex in the buffer
|
|
#endif
|
|
}
|
|
|
|
glDrawArrays(fDrawArrayType, // GL_POINTS, GL_LINE_STRIP, GL_LINE_LOOP, GL_LINES, GL_TRIANGLE_FAN, GL_TRIANGLE_STRIP, and GL_TRIANGLES
|
|
0, vertices.size()/6);
|
|
if (pGLViewer) {
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
glDisableClientState( GL_VERTEX_ARRAY );
|
|
#else
|
|
glDisableVertexAttribArray(pGLViewer->fVertexPositionAttribute);
|
|
#endif
|
|
}
|
|
|
|
// delete the buffer
|
|
#ifndef G4VIS_BUILD_OPENGLWT_DRIVER
|
|
glDeleteBuffers(1,&fVertexBufferObject);
|
|
#else
|
|
glDeleteBuffer(fVertexBufferObject);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#endif
|