EVE/EveDet/AliEveTPCSector3DGL.cxx

   1 // $Id$
   2 // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
   3
   4 /**************************************************************************
   5  * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
   6  * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for          *
   7  * full copyright notice.                                                 *
   8  **************************************************************************/
   9
  10 #include "AliEveTPCSector3DGL.h"
  11 #include <EveDet/AliEveTPCSector3D.h>
  12
  13 #include <TEveBoxSetGL.h>
  14
  15 #include <TGLIncludes.h>
  16 #include <TGLRnrCtx.h>
  17 #include <TGLSelectRecord.h>
  18
  19 //______________________________________________________________________________
  20 //
  21 // GL renderer for AliEveTPCSector3D.
  22
  23 ClassImp(AliEveTPCSector3DGL)
  24
  25 AliEveTPCSector3DGL::AliEveTPCSector3DGL() :
  26   TGLObject(),
  27   fSector(0), fBoxRnr(0),
  28   fRTS(0)
  29 {
  30   // Constructor.
  31
  32   fDLCache = false; // Disable display list.
  33 }
  34
  35 AliEveTPCSector3DGL::~AliEveTPCSector3DGL()
  36 {
  37   // Destructor.
  38
  39   delete fBoxRnr;
  40 }
  41
  42 /******************************************************************************/
  43
  44 //______________________________________________________________________________
  45 Short_t AliEveTPCSector3DGL::QuantizeShapeLOD(Short_t shapeLOD, Short_t combiLOD) const
  46 {
  47    // Factor in scene/viewer LOD and quantize.
  48
  49    Int_t lod = ((Int_t)shapeLOD * (Int_t)combiLOD) / 100;
  50
  51    if (lod >= 100)
  52      return 100;
  53    else
  54      return (Short_t)(10 * TMath::Nint(0.1*lod));
  55 }
  56
  57 /******************************************************************************/
  58
  59 Bool_t AliEveTPCSector3DGL::SetModel(TObject* obj, const Option_t* /*opt*/)
  60 {
  61   // Set model object.
  62
  63   if(SetModelCheckClass(obj, AliEveTPCSector3D::Class())) {
  64     fSector = (AliEveTPCSector3D*) fExternalObj;
  65     if(fBoxRnr == 0) {
  66       fBoxRnr = new TEveBoxSetGL;
  67       fBoxRnr->SetModel(&fSector->fBoxSet);
  68     }
  69     return kTRUE;
  70   }
  71   return kFALSE;
  72 }
  73
  74 void AliEveTPCSector3DGL::SetBBox()
  75 {
  76   // Set bounding-box.
  77
  78   SetAxisAlignedBBox(((AliEveTPCSector3D*)fExternalObj)->AssertBBox());
  79 }
  80
  81 /******************************************************************************/
  82
  83 void AliEveTPCSector3DGL::DirectDraw(TGLRnrCtx & rnrCtx) const
  84 {
  85   // Render object.
  86
  87   // printf("AliEveTPCSector3DGL::DirectDraw Style %d, LOD %d\n", rnrCtx.Style(), rnrCtx.LOD());
  88
  89   if(fRTS < fSector->fRTS) {
  90     fSector->UpdateBoxesAndPoints();
  91     fRTS = fSector->fRTS;
  92   }
  93
  94   if (rnrCtx.SecSelection()) glPushName(0);
  95
  96   Bool_t hasData = (fSector->GetSectorData() != 0);
  97
  98   if(hasData)
  99   {
 100     if (rnrCtx.SecSelection()) glLoadName(9999);
 101     fBoxRnr->Render(rnrCtx);
 102   }
 103
 104   glPushAttrib(GL_CURRENT_BIT | GL_POINT_BIT | GL_ENABLE_BIT);
 105   glDisable(GL_LIGHTING);
 106
 107   if(hasData && fSector->fPointSetOn)
 108   {
 109     glEnable(GL_BLEND);
 110     glEnable(GL_POINT_SMOOTH);
 111     glPointSize(fSector->fPointSize);
 112
 113     glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
 114     glEnableClientState(GL_VERTEX_ARRAY);
 115
 116     const TEvePointSetArray& psa = fSector->fPointSetArray;
 117     for(Int_t b=0; b<psa.GetNBins(); ++b)
 118     {
 119       TEvePointSet* ps = psa.GetBin(b);
 120       if(ps->Size() > 0)
 121       {
 122         TGLUtil::Color(ps->GetMarkerColor());
 123
 124         if (rnrCtx.SecSelection()) glLoadName(b + 1);
 125         glVertexPointer(3, GL_FLOAT, 0, ps->GetP());
 126         glDrawArrays(GL_POINTS, 0, ps->Size());
 127       }
 128     }
 129
 130     glPopClientAttrib();
 131   }
 132
 133   if(fSector->fRnrFrame && ! rnrCtx.SecSelection())
 134   {
 135     TGLUtil::Color(fSector->fFrameColor);
 136
 137     if(fSector->fRnrInn)
 138       DrawSegmentFrame(AliEveTPCSectorData::GetInnSeg(),  0, 2);
 139     if(fSector->fRnrOut1)
 140       DrawSegmentFrame(AliEveTPCSectorData::GetOut1Seg(), 2, 1);
 141     if(fSector->fRnrOut2)
 142       DrawSegmentFrame(AliEveTPCSectorData::GetOut2Seg(), 2, 2);
 143   }
 144
 145   glPopAttrib();
 146 }
 147
 148 void AliEveTPCSector3DGL::DrawSegmentFrame(const AliEveTPCSectorData::SegmentInfo& s,
 149                                            Int_t botExtraPads, Int_t topExtraPads) const
 150 {
 151   // Draw frame of given segment.
 152
 153   Float_t xl, xh, yl, yh, zl, zh;
 154   xl = 0.5*s.GetPadWidth()*(AliEveTPCSectorData::GetNPadsInRow(s.GetFirstRow()) + botExtraPads);
 155   xh = 0.5*s.GetPadWidth()*(AliEveTPCSectorData::GetNPadsInRow(s.GetLastRow())  + topExtraPads);
 156   yl = s.GetRLow();
 157   yh = yl + s.GetNRows()*s.GetPadHeight();
 158   zl = 0;
 159   zh = AliEveTPCSectorData::GetZLength();
 160
 161   glBegin(GL_LINE_LOOP);
 162   glVertex3f( xl, yl, zl);  glVertex3f( xh, yh, zl);
 163   glVertex3f(-xh, yh, zl);  glVertex3f(-xl, yl, zl);
 164   glEnd();
 165   glBegin(GL_LINE_LOOP);
 166   glVertex3f( xl, yl, zh);  glVertex3f( xh, yh, zh);
 167   glVertex3f(-xh, yh, zh);  glVertex3f(-xl, yl, zh);
 168   glEnd();
 169   glBegin(GL_LINES);
 170   glVertex3f( xl, yl, zl);  glVertex3f( xl, yl, zh);
 171   glVertex3f( xh, yh, zl);  glVertex3f( xh, yh, zh);
 172   glVertex3f(-xh, yh, zl);  glVertex3f(-xh, yh, zh);
 173   glVertex3f(-xl, yl, zl);  glVertex3f(-xl, yl, zh);
 174   glEnd();
 175 }
 176
 177 /******************************************************************************/
 178 /******************************************************************************/
 179
 180 //______________________________________________________________________________
 181 void AliEveTPCSector3DGL::ProcessSelection(TGLRnrCtx & /*rnrCtx*/, TGLSelectRecord & rec)
 182 {
 183   // Processes secondary selection from TGLViewer.
 184   // Calls TPointSet3D::PointSelected(Int_t) with index of selected
 185   // point as an argument.
 186
 187   if (rec.GetN() < 3) return;
 188
 189   if (rec.GetItem(1) == 9999)
 190   {
 191     printf("TPC3D Box selected idx=%u\n", rec.GetItem(2));
 192     return;
 193   }
 194
 195   const TEvePointSetArray& psa = fSector->fPointSetArray;
 196
 197   if (rec.GetItem(1) > 0 && rec.GetItem(1) <= (UInt_t) psa.GetNBins())
 198   {
 199     // TEvePointSet& ps = * psa.GetBin(rec.GetItem(1) - 1);
 200     printf("TPC3D Point selected, bin=%u, idx=%u\n", rec.GetItem(1) - 1, rec.GetItem(2));
 201     return;
 202   }
 203 }