C++ (Cpp) TGLViewer::CurrentCamera Examples

Example #1

File: vertical_tube.C Project: mjrasobarnett/ucnsim

//__________________________________________________________________________
Bool_t Draw_Geom(const TGeoManager* geoManager) 
{
   // -------------------------------------
   // -- Draw the vis-geometry in OpenGLViewer
   TCanvas* canvas = new TCanvas("GeomCanvas","Canvas for visualisation of EDM Geom",60,40,600,600);
   canvas->cd();
   geoManager->GetTopVolume()->Draw("ogl");
   geoManager->SetVisLevel(4); // Default draws 4 levels down volume heirarchy
   geoManager->SetVisOption(0); // Default is 1, but 0 draws all the intermediate volumes not just the final bottom layer
   geoManager->ViewLeaves(kTRUE);
   
   // -- Get the GLViewer so we can manipulate the camera
   TGLViewer * glViewer = dynamic_cast<TGLViewer*>(gPad->GetViewer3D());
   // -- Select Draw style 
   glViewer->SetStyle(TGLRnrCtx::kFill); // TGLRnrCtx::kFill, TGLRnrCtx::kOutline, TGLRnrCtx::kWireFrame
   // -- Set Background colour
   glViewer->SetClearColor(TColor::kWhite);
   // -- Set Lights - turn some off if you wish
// TGLLightSet* lightSet = glViewer->GetLightSet();
// lightSet->SetLight(TGLLightSet::kLightLeft, kFALSE);
   // -- Set Camera type
   // kCameraPerspXOZ, kCameraPerspYOZ, kCameraPerspXOY, kCameraOrthoXOY
   // kCameraOrthoXOZ, kCameraOrthoZOY, kCameraOrthoXnOY, kCameraOrthoXnOZ, kCameraOrthoZnOY
   TGLViewer::ECameraType camera = 2;
   glViewer->SetCurrentCamera(camera);
   glViewer->CurrentCamera().SetExternalCenter(kTRUE);
   Double_t cameraCentre[3] = {0., 0., 0.};
   glViewer->SetPerspectiveCamera(camera,4,100,&cameraCentre[0],0,0);
   // -- Draw Reference Point, Axes
   Double_t refPoint[3] = {0.,0.,0.};
   // Int_t axesType = 0(Off), 1(EDGE), 2(ORIGIN), Bool_t axesDepthTest, Bool_t referenceOn, const Double_t referencePos[3]
   glViewer->SetGuideState(0, kFALSE, kFALSE, refPoint);
   glViewer->UpdateScene();
   return kTRUE;
}

Example #2

File: geom_cms.C Project: adevress/root-1

void geom_cms()
{
   TEveManager::Create();

   TFile::SetCacheFileDir(".");
   gGeoManager = gEve->GetGeometry("http://root.cern.ch/files/cms.root");
   gGeoManager->DefaultColors();

   TGeoVolume* top = gGeoManager->GetTopVolume()->FindNode("CMSE_1")->GetVolume();

   TEveGeoTopNode* trk = new TEveGeoTopNode(gGeoManager, top->FindNode("TRAK_1"));
   trk->SetVisLevel(6);
   gEve->AddGlobalElement(trk);

   TEveGeoTopNode* calo = new TEveGeoTopNode(gGeoManager, top->FindNode("CALO_1"));
   calo->SetVisLevel(3);
   gEve->AddGlobalElement(calo);

   TEveGeoTopNode* muon = new TEveGeoTopNode(gGeoManager, top->FindNode("MUON_1"));
   muon->SetVisLevel(4);
   gEve->AddGlobalElement(muon);

   gEve->FullRedraw3D(kTRUE);

   // EClipType not exported to CINT (see TGLUtil.h):
   // 0 - no clip, 1 - clip plane, 2 - clip box
   TGLViewer *v = gEve->GetDefaultGLViewer();
   v->GetClipSet()->SetClipType(TGLClip::EType(1));
   v->ColorSet().Background().SetColor(kMagenta+4);
   v->SetGuideState(TGLUtil::kAxesEdge, kTRUE, kFALSE, 0);
   v->RefreshPadEditor(v);

   v->CurrentCamera().RotateRad(-1.2, 0.5);
   v->DoDraw();
}

Example #3

File: geom_lhcb.C Project: adevress/root-1

void geom_lhcb()
{
   TEveManager::Create();

   TFile::SetCacheFileDir(".");
   gGeoManager = gEve->GetGeometry("http://root.cern.ch/files/lhcbfull.root");
   gGeoManager->DefaultColors();

   TEveGeoTopNode* tn = new TEveGeoTopNode(gGeoManager, gGeoManager->GetTopNode());
   tn->SetVisLevel(4);
   gEve->AddGlobalElement(tn);

   gEve->FullRedraw3D(kTRUE);

   // EClipType not exported to CINT (see TGLUtil.h):
   // 0 - no clip, 1 - clip plane, 2 - clip box
   TGLViewer *v = gEve->GetDefaultGLViewer();
   v->GetClipSet()->SetClipType(TGLClip::EType(1));
   v->ColorSet().Background().SetColor(kMagenta+4);
   v->SetGuideState(TGLUtil::kAxesEdge, kTRUE, kFALSE, 0);
   v->RefreshPadEditor(v);

   v->CurrentCamera().RotateRad(-1.2, 0.5);
   v->DoDraw();
}

Example #4

File: geom_alias.C Project: My-Source/root

void geom_alias()
{
   TEveManager::Create();

   gEve->RegisterGeometryAlias("ALICE", "http://root.cern.ch/files/alice.root");
   gEve->RegisterGeometryAlias("ATLAS", "http://root.cern.ch/files/atlas.root");


   gGeoManager = gEve->GetGeometryByAlias("ALICE");

   TGeoNode* node1 = gGeoManager->GetTopVolume()->FindNode("ITSV_1");
   TEveGeoTopNode* its = new TEveGeoTopNode(gGeoManager, node1);
   gEve->AddGlobalElement(its);


   gGeoManager = gEve->GetGeometryByAlias("ATLAS");

   TGeoNode* node2 = gGeoManager->GetTopVolume()->FindNode("OUTE_1");
   TEveGeoTopNode* atlas = new TEveGeoTopNode(gGeoManager, node2);
   gEve->AddGlobalElement(atlas);


   gEve->FullRedraw3D(kTRUE);

   // EClipType not exported to CINT (see TGLUtil.h):
   // 0 - no clip, 1 - clip plane, 2 - clip box
   TGLViewer *v = gEve->GetDefaultGLViewer();
   v->GetClipSet()->SetClipType(2);
   v->RefreshPadEditor(v);

   v->CurrentCamera().RotateRad(-0.5, -2.4);
   v->DoDraw();
}

Example #5

File: geom_atlas.C Project: adevress/root-1

void geom_atlas()
{
   TEveManager::Create();

   TFile::SetCacheFileDir(".");
   gGeoManager = gEve->GetGeometry("http://root.cern.ch/files/atlas.root");
   gGeoManager->DefaultColors();

   TGeoNode* node1 = gGeoManager->GetTopVolume()->FindNode("INNE_1");
   TEveGeoTopNode* inn = new TEveGeoTopNode(gGeoManager, node1);
   gEve->AddGlobalElement(inn);

   TGeoNode* node2 = gGeoManager->GetTopVolume()->FindNode("CENT_1");
   TEveGeoTopNode* cnt = new TEveGeoTopNode(gGeoManager, node2);
   gEve->AddGlobalElement(cnt);

   TGeoNode* node3 = gGeoManager->GetTopVolume()->FindNode("OUTE_1");
   TEveGeoTopNode* out = new TEveGeoTopNode(gGeoManager, node3);
   gEve->AddGlobalElement(out);

   gEve->FullRedraw3D(kTRUE);

   // EClipType not exported to CINT (see TGLUtil.h):
   // 0 - no clip, 1 - clip plane, 2 - clip box
   TGLViewer *v = gEve->GetDefaultGLViewer();
   v->GetClipSet()->SetClipType(TGLClip::EType(1));
   v->RefreshPadEditor(v);

   v->CurrentCamera().RotateRad(-.7, 0.5);
   v->DoDraw();
}

Example #6

File: geom_cms_stereo.C Project: adevress/root-1

void geom_cms_stereo()
{
   TEveManager::Create();

   TFile::SetCacheFileDir(".");
   gGeoManager = gEve->GetGeometry("http://root.cern.ch/files/cms.root");
   gGeoManager->DefaultColors();

   TGeoVolume* top = gGeoManager->GetTopVolume()->FindNode("CMSE_1")->GetVolume();

   TEveGeoTopNode* trk = new TEveGeoTopNode(gGeoManager, top->FindNode("TRAK_1"));
   trk->SetVisLevel(6);
   gEve->AddGlobalElement(trk);

   TEveGeoTopNode* calo = new TEveGeoTopNode(gGeoManager, top->FindNode("CALO_1"));
   calo->SetVisLevel(3);
   gEve->AddGlobalElement(calo);

   TEveGeoTopNode* muon = new TEveGeoTopNode(gGeoManager, top->FindNode("MUON_1"));
   muon->SetVisLevel(4);
   gEve->AddGlobalElement(muon);

   // --- Stereo ---

   TEveWindowSlot* slot = 0;
   slot = TEveWindow::CreateWindowInTab(gEve->GetBrowser()->GetTabRight());

   TEveViewer* sv = new TEveViewer("Stereo GL", "Stereoscopic view");
   sv->SpawnGLViewer(gEve->GetEditor(), kTRUE);
   sv->AddScene(gEve->GetGlobalScene());

   slot->ReplaceWindow(sv);

   gEve->GetViewers()->AddElement(sv);

   gEve->GetBrowser()->GetTabRight()->SetTab(1);

   // --- Redraw ---

   gEve->FullRedraw3D(kTRUE);
   gEve->EditElement(sv);

   // --- Fix editor ---

   // EClipType not exported to CINT (see TGLUtil.h):
   // 0 - no clip, 1 - clip plane, 2 - clip box
   TGLViewer *v = gEve->GetDefaultGLViewer();
   v->GetClipSet()->SetClipType(TGLClip::EType(1));
   v->ColorSet().Background().SetColor(kMagenta+4);
   v->SetGuideState(TGLUtil::kAxesEdge, kTRUE, kFALSE, 0);
   v->RefreshPadEditor(v);

   v->CurrentCamera().RotateRad(-1.2, 0.5);
   v->DoDraw();
}

Example #7

File: common_foos.C Project: Andrej-CMS/cmssw

void std_camera_clip()
{
   // EClipType not exported to CINT (see TGLUtil.h):
   // 0 - no clip, 1 - clip plane, 2 - clip box

   TGLViewer *v = gEve->GetDefaultGLViewer();
   v->GetClipSet()->SetClipType((EClipType) 1);
   v->SetGuideState(TGLUtil::kAxesEdge, kTRUE, kFALSE, 0);
   v->RefreshPadEditor(v);

   v->CurrentCamera().RotateRad(-1.2, 0.5);
   v->DoDraw();
}

Example #8

File: auto_rotate.C Project: brettviren/ORKA-ILCRoot

void auto_rotate_camera()
{
   static Double_t hRotateStep = 0.005;
   static Double_t vRotateStep = 0.025;

   g_rotate_theta += hRotateStep * g_rotate_speed;
   if (g_rotate_theta >= 0.8 || g_rotate_theta <= -0.8) 
   {
     hRotateStep = -hRotateStep;
   }

   TGLViewer *v   = gEve->GetDefaultGLViewer();
   TGLCamera &cam = v->CurrentCamera();
   cam.RotateRad(hRotateStep * g_rotate_speed, vRotateStep * g_rotate_speed);
   v->RequestDraw(TGLRnrCtx::kLODHigh);
}

Example #9

File: projection.C Project: My-Source/root

void projection()
{
   TFile::SetCacheFileDir(".");
   TEveManager::Create();

   // camera
   TEveScene* s = gEve->SpawnNewScene("Projected Event");
   gEve->GetDefaultViewer()->AddScene(s);
   TGLViewer* v = gEve->GetDefaultGLViewer();
   v->SetCurrentCamera(TGLViewer::kCameraOrthoXOY);
   TGLOrthoCamera* cam = (TGLOrthoCamera*) v->CurrentCamera();
   cam->SetZoomMinMax(0.2, 20);

   // projections
   TEveProjectionManager* mng =
      new TEveProjectionManager(TEveProjection::kPT_RPhi);
   s->AddElement(mng);
   TEveProjectionAxes* axes = new TEveProjectionAxes(mng);
   axes->SetTitle("TEveProjections demo");
   s->AddElement(axes);
   gEve->AddToListTree(axes, kTRUE);
   gEve->AddToListTree(mng, kTRUE);

   // Simple geometry
   TFile* geom = TFile::Open(esd_geom_file_name, "CACHEREAD");
   if (!geom)
      return;

   TEveGeoShapeExtract* gse = (TEveGeoShapeExtract*) geom->Get("Gentle");
   TEveGeoShape* gsre = TEveGeoShape::ImportShapeExtract(gse, 0);
   geom->Close();
   delete geom;
   gsre->SetPickableRecursively(kTRUE);
   gEve->AddGlobalElement(gsre);
   gEve->GetGlobalScene()->SetRnrState(kFALSE);
   mng->ImportElements(gsre);

   TEveLine* line = new TEveLine;
   line->SetMainColor(kGreen);
   for (Int_t i=0; i<160; ++i)
      line->SetNextPoint(120*sin(0.2*i), 120*cos(0.2*i), 80-i);
   gEve->AddElement(line);
   mng->ImportElements(line);
   line->SetRnrSelf(kFALSE);

   gEve->Redraw3D(kTRUE);
}