[u/mrichter/AliRoot.git] / EVE / Alieve / TPCSector2DGL.cxx

// $Header$

#include "TPCSector2DGL.h"

#include <Alieve/TPCData.h>

#include <TStopwatch.h>

#include <TGLDrawFlags.h>
#include <GL/gl.h>

using namespace Reve;
using namespace Alieve;
using namespace std;

//______________________________________________________________________
// TPCSector2DGL
//

ClassImp(TPCSector2DGL)

// This can be optimized to non-pow-2 values once everybody has GL 1.4.

const Int_t TPCSector2DGL::fgkTextureWidth    = 256;
const Int_t TPCSector2DGL::fgkTextureHeight   = 128;
const Int_t TPCSector2DGL::fgkTextureByteSize = 4*256*128;

/**************************************************************************/

TPCSector2DGL::TPCSector2DGL() : TGLObject()
{
  fSector     = 0;
  fSectorData = 0;

  fImage   = 0;
  fTexture = 0;
  fRTS     = 0;
}

TPCSector2DGL::~TPCSector2DGL()
{
  if(fImage)   delete fImage;
  if(fTexture) glDeleteTextures(1, &fTexture);
}

/**************************************************************************/

Bool_t TPCSector2DGL::SetModel(TObject* obj)
{
#if ROOT_VERSION_CODE <= ROOT_VERSION(5,11,2)
  if(set_model(obj, "Alieve::TPCSector2D")) {
#elif ROOT_VERSION_CODE <= ROOT_VERSION(5,13,0)
  if(SetModelCheckClass(obj, "Alieve::TPCSector2D")) {
#else
  if(SetModelCheckClass(obj, Alieve::TPCSector2D::Class())) {
#endif
    fSector = (TPCSector2D*) fExternalObj;
    return kTRUE;
  }
  return kFALSE;
}

void TPCSector2DGL::SetBBox()
{
#if ROOT_VERSION_CODE <= ROOT_VERSION(5,11,2)
  set_axis_aligned_bbox(((TPCSector2D*)fExternalObj)->AssertBBox());
#else
  SetAxisAlignedBBox(((TPCSector2D*)fExternalObj)->AssertBBox());
#endif
}

/**************************************************************************/

void TPCSector2DGL::DirectDraw(const TGLDrawFlags& flags) const
{
  // Actual GL drawing.

  // printf("TPCSector2DGL::DirectDraw \n");

  fSectorData = fSector->GetSectorData();

  if(fRTS < fSector->fRTS && fSectorData != 0) {
    CreateTexture();
    fRTS = fSector->fRTS;
  }

  glPushAttrib(GL_CURRENT_BIT      | GL_DEPTH_BUFFER_BIT |
               GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT       | GL_POLYGON_BIT);

  glDisable(GL_LIGHTING);
  glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
  glEnable(GL_COLOR_MATERIAL);
  glDisable(GL_CULL_FACE);

  // Display digits
  if(fSectorData != 0) {

    const TPCSectorData::SegmentInfo&  iSeg = TPCSectorData::GetInnSeg();
    const TPCSectorData::SegmentInfo& o1Seg = TPCSectorData::GetOut1Seg();
    const TPCSectorData::SegmentInfo& o2Seg = TPCSectorData::GetOut2Seg();

    if(flags.SecSelection()) {

      if(fSector->fRnrInn)  DisplayNamedQuads(iSeg, 0, 0);
      if(fSector->fRnrOut1) DisplayNamedQuads(o1Seg, iSeg.GetNMaxPads(), 0);
      if(fSector->fRnrOut2) DisplayNamedQuads(o2Seg, 0, o1Seg.GetNRows());

    } else {

      if(fSector->fUseTexture) {
	//texture
	glEnable(GL_BLEND);
	glDepthMask(GL_FALSE);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	glPolygonOffset(2,2);
	glEnable(GL_POLYGON_OFFSET_FILL);

	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
	glBindTexture(GL_TEXTURE_2D, fTexture);
	glEnable(GL_TEXTURE_2D);

	if(fSector->fRnrInn)  DisplayTexture(iSeg, 0, 0);
	if(fSector->fRnrOut1) DisplayTexture(o1Seg, iSeg.GetNMaxPads(), 0);
	if(fSector->fRnrOut2) DisplayTexture(o2Seg, 0, o1Seg.GetNRows());

	glDisable(GL_TEXTURE_2D);
      } else {
	if(fSector->fRnrInn)  DisplayQuads(iSeg, 0, 0);
	if(fSector->fRnrOut1) DisplayQuads(o1Seg, iSeg.GetNMaxPads(), 0);
	if(fSector->fRnrOut2) DisplayQuads(o2Seg, 0, o1Seg.GetNRows());
      }
      glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
      DisplayFrame();
    }

  }

  glPopAttrib();
}

/**************************************************************************/
// Data import
/**************************************************************************/

void TPCSector2DGL::LoadPadrow(TPCSectorData::RowIterator& iter,
			       Int_t row, Int_t col_off) const
{
  Int_t    padVal;
  Int_t    time, val;   

  Int_t    minTime = fSector->fMinTime;
  Int_t    maxTime = fSector->fMaxTime;
  Bool_t   halfBorderTime = ((maxTime - minTime) % 2 == 0);

  UChar_t* img_pos = GetRowCol(row, col_off);
  while (iter.NextPad()) {
    padVal = 0; 

    while (iter.Next()) {
      time = iter.Time();
      val  = iter.Signal();

      if(time < minTime || time > maxTime)
	continue;

      if(fSector->fShowMax) {
        if(val > padVal) {
          padVal = val;
        }
      } else {
	if(halfBorderTime && (time == minTime || time == maxTime))
	  padVal += val/2;
	else
	  padVal += val;
      }
    }

    if(fSector->fShowMax == kFALSE && fSector->fAverage) {
      padVal = (Int_t)((Float_t)padVal / (maxTime - minTime));
    }
    padVal = TMath::Min(padVal, fSector->fMaxVal);
    if(padVal > fSector->fThreshold)
      fSector->ColorFromArray(padVal, img_pos);
    img_pos += 4;
  }
}

/**************************************************************************/

void TPCSector2DGL::CreateTexture() const
{
  if (fImage == 0 ) {
    fImage = new UChar_t[fgkTextureByteSize];
    glGenTextures(1, &fTexture);
  }
  memset(fImage, 0, fgkTextureByteSize);

  Int_t rowOff[3], colOff[3];
  Bool_t isOn[3];
  rowOff[0] = 0;
  rowOff[1] = rowOff[2] = -TPCSectorData::GetSeg(1).GetFirstRow();
  colOff[0] = colOff[2] = 0;
  colOff[1] = TPCSectorData::GetSeg(0).GetNMaxPads();
  isOn[0] = fSector->fRnrInn;
  isOn[1] = fSector->fRnrOut1;
  isOn[2] = fSector->fRnrOut2;

  fSector->SetupColorArray();

  // Loop over 3 main segments
  for (Int_t sId = 0; sId <= 2; ++sId) {
    if(isOn[sId] == kFALSE)
      continue;
    const TPCSectorData::SegmentInfo& sInfo = TPCSectorData::GetSeg(sId);
    for (Int_t row=sInfo.GetFirstRow(); row<=sInfo.GetLastRow(); ++row) {
      TPCSectorData::RowIterator i = fSectorData->MakeRowIterator(row);
      Int_t offset = (sInfo.GetNMaxPads() - TPCSectorData::GetNPadsInRow(row))/2;
      LoadPadrow(i, row + rowOff[sId], offset + colOff[sId]);
    }
  }

  glBindTexture  (GL_TEXTURE_2D, fTexture);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,GL_REPEAT);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,GL_REPEAT);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  glTexEnvf      (GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,   GL_REPLACE);
  glTexImage2D   (GL_TEXTURE_2D, 0, GL_RGBA, fgkTextureWidth, fgkTextureHeight,
                  0, GL_RGBA, GL_UNSIGNED_BYTE, fImage);

}

/**************************************************************************/
// Data display
/**************************************************************************/

void TPCSector2DGL::DisplayTexture(const TPCSectorData::SegmentInfo& seg,
                                   Int_t startCol, Int_t startRow) const
{
  Float_t w  = seg.GetNMaxPads()*seg.GetPadWidth()/2;
  Float_t y1 = seg.GetRLow();
  Float_t y2 = y1 + seg.GetNRows()*seg.GetPadHeight();

  Float_t u1 = (Float_t) startCol / fgkTextureWidth;
  Float_t v1 = (Float_t) startRow / fgkTextureHeight;
  Float_t u2 = u1 + (Float_t) seg.GetNMaxPads() / fgkTextureWidth;
  Float_t v2 = v1 + (Float_t) seg.GetNRows()    / fgkTextureHeight;

  glBegin(GL_QUADS);  
  glTexCoord2f(u1, v1);  glVertex2f(-w, y1);
  glTexCoord2f(u1, v2);  glVertex2f(-w, y2);
  glTexCoord2f(u2, v2);  glVertex2f( w, y2);
  glTexCoord2f(u2, v1);  glVertex2f( w, y1);
  glEnd();
}

/**************************************************************************/

void TPCSector2DGL::DisplayQuads(const TPCSectorData::SegmentInfo& seg,
                                 Int_t startCol, Int_t startRow) const
{
  Float_t y_d, y_u;
  Float_t x_off, x;
  Float_t padW = seg.GetPadWidth();
  Float_t padH = seg.GetPadHeight();

  glBegin(GL_QUADS);
  for (Int_t row=0; row<seg.GetNRows(); row++) {
    y_d = seg.GetRLow() + row*padH;
    y_u = y_d + padH;
    x_off = -seg.GetNMaxPads()*padW/2;
    Int_t tpcRow = row + seg.GetFirstRow();
    Int_t deltaPad = (seg.GetNMaxPads() - TPCSectorData::GetNPadsInRow(tpcRow))/2;
    Int_t   maxPad = seg.GetNMaxPads() - deltaPad;
    UChar_t   *pix = GetRowCol(row + startRow, startCol + deltaPad);
    for (Int_t pad=deltaPad; pad<maxPad; pad++, pix+=4) {
      x = x_off + pad*padW;
      if (pix[3] != 0) {
        glColor4ubv(pix);
        glVertex2f(x+padW, y_d);
        glVertex2f(x,      y_d);
        glVertex2f(x,      y_u);
        glVertex2f(x+padW, y_u);
      }
    }
  }
  glEnd();
}

void TPCSector2DGL::DisplayNamedQuads(const TPCSectorData::SegmentInfo& seg,
				      Int_t startCol, Int_t startRow) const
{
  Float_t y_d, y_u;
  Float_t x_off, x;
  Float_t padW = seg.GetPadWidth();
  Float_t padH = seg.GetPadHeight();

  glPushName(0);
  for (Int_t row=0; row<seg.GetNRows(); row++) {
    y_d = seg.GetRLow() + row*padH;
    y_u = y_d + padH;
    x_off = -seg.GetNMaxPads()*padW/2;
    Int_t tpcRow = row + seg.GetFirstRow();
    glLoadName(tpcRow);
    Int_t deltaPad = (seg.GetNMaxPads() - TPCSectorData::GetNPadsInRow(tpcRow))/2;
    Int_t   maxPad = seg.GetNMaxPads() - deltaPad;
    UChar_t   *pix = GetRowCol(row + startRow, startCol + deltaPad);
    glPushName(0);
    for (Int_t pad=deltaPad; pad<maxPad; pad++, pix+=4) {
      x = x_off + pad*padW;
      // !!! Potentially replace following 'if', add an option to TPCSector2D.
      // !!! Details depend on how data is processed during extraction.
      if (pix[3] != 0) {
	glLoadName(pad - deltaPad);
	glBegin(GL_QUADS);
        glVertex2f(x+padW, y_d);
        glVertex2f(x,      y_d);
        glVertex2f(x,      y_u);
        glVertex2f(x+padW, y_u);
	glEnd();
      }
    }
    glPopName();
  }
  glPopName();
}

/**************************************************************************/
// Frame drawing
/**************************************************************************/

void TPCSector2DGL::TraceStepsUp(const TPCSectorData::SegmentInfo& s)
{
  Float_t x = -(s.GetNMaxPads()*1.0/2 - s.GetNYSteps())*s.GetPadWidth();
  Float_t y  = s.GetRLow();
  glVertex2f(x, y);
  for (Int_t i=0; i<s.GetNYSteps(); ++i) {
    y = s.GetYStep(i);
    glVertex2f(x, y);
    x -= s.GetPadWidth();
    glVertex2f(x, y);
  }
  y =  s.GetRLow() + s.GetNRows()*s.GetPadHeight();
  glVertex2f(-s.GetNMaxPads()*s.GetPadWidth()/2, y);
}

void TPCSector2DGL::TraceStepsDown(const TPCSectorData::SegmentInfo& s) 
{
  Float_t x = s.GetNMaxPads()*s.GetPadWidth()/2;
  Float_t y = s.GetRLow() + s.GetNRows()*s.GetPadHeight();
  glVertex2f(x, y);
  for (Int_t i=s.GetNYSteps() - 1; i>=0; --i) {
    y =  s.GetYStep(i);
    glVertex2f(x, y);
    x -= s.GetPadWidth();
    glVertex2f(x, y);
  }
  y = s.GetRLow();
  glVertex2f((0.5*s.GetNMaxPads() - s.GetNYSteps())*s.GetPadWidth(), y);
}

void TPCSector2DGL::DisplayFrame() const
{
  UChar_t col[4];
  ColorFromIdx(fSector->fFrameColor, col);
  glColor4ubv(col);

  if(fSector->fRnrInn) {
    glBegin(GL_POLYGON);
    TraceStepsUp  (TPCSectorData::GetInnSeg());
    TraceStepsDown(TPCSectorData::GetInnSeg());
    glEnd();
  }
  if(fSector->fRnrOut1) {
    glBegin(GL_POLYGON);
    TraceStepsUp  (TPCSectorData::GetOut1Seg());
    TraceStepsDown(TPCSectorData::GetOut1Seg());
    glEnd();
  }
  if(fSector->fRnrOut2) {
    glBegin(GL_POLYGON);
    TraceStepsUp  (TPCSectorData::GetOut2Seg());
    TraceStepsDown(TPCSectorData::GetOut2Seg());
    glEnd();
  }
}
Commit	Line	Data
915dabe1	1	// $Header$
	2
	3	#include "TPCSector2DGL.h"
	4
	5	#include <Alieve/TPCData.h>
	6
915dabe1	7	#include <TStopwatch.h>
915dabe1	8
426530cc	9	#include <TGLDrawFlags.h>
915dabe1	10	#include <GL/gl.h>
	11
	12	using namespace Reve;
	13	using namespace Alieve;
	14	using namespace std;
	15
68084553	16	//______________________________________________________________________
	17	// TPCSector2DGL
	18	//
	19
	20	ClassImp(TPCSector2DGL)
	21
	22	// This can be optimized to non-pow-2 values once everybody has GL 1.4.
915dabe1	23
	24	const Int_t TPCSector2DGL::fgkTextureWidth = 256;
	25	const Int_t TPCSector2DGL::fgkTextureHeight = 128;
	26	const Int_t TPCSector2DGL::fgkTextureByteSize = 4256128;
	27
	28	/**************************************************************************/
	29
	30	TPCSector2DGL::TPCSector2DGL() : TGLObject()
	31	{
	32	fSector = 0;
	33	fSectorData = 0;
	34
	35	fImage = 0;
	36	fTexture = 0;
	37	fRTS = 0;
	38	}
	39
	40	TPCSector2DGL::~TPCSector2DGL()
	41	{
	42	if(fImage) delete fImage;
	43	if(fTexture) glDeleteTextures(1, &fTexture);
	44	}
	45
	46	/**************************************************************************/
	47
	48	Bool_t TPCSector2DGL::SetModel(TObject* obj)
	49	{
606c4ed7	50	#if ROOT_VERSION_CODE <= ROOT_VERSION(5,11,2)
606c4ed7	51	if(set_model(obj, "Alieve::TPCSector2D")) {
426530cc	52	#elif ROOT_VERSION_CODE <= ROOT_VERSION(5,13,0)
606c4ed7	53	if(SetModelCheckClass(obj, "Alieve::TPCSector2D")) {
426530cc	54	#else
426530cc	55	if(SetModelCheckClass(obj, Alieve::TPCSector2D::Class())) {
606c4ed7	56	#endif
915dabe1	57	fSector = (TPCSector2D*) fExternalObj;
891e4bb4	58	return kTRUE;
915dabe1	59	}
891e4bb4	60	return kFALSE;
915dabe1	61	}
	62
	63	void TPCSector2DGL::SetBBox()
	64	{
606c4ed7	65	#if ROOT_VERSION_CODE <= ROOT_VERSION(5,11,2)
915dabe1	66	set_axis_aligned_bbox(((TPCSector2D*)fExternalObj)->AssertBBox());
606c4ed7	67	#else
	68	SetAxisAlignedBBox(((TPCSector2D*)fExternalObj)->AssertBBox());
	69	#endif
915dabe1	70	}
	71
	72	/**************************************************************************/
	73
426530cc	74	void TPCSector2DGL::DirectDraw(const TGLDrawFlags& flags) const
915dabe1	75	{
	76	// Actual GL drawing.
	77
	78	// printf("TPCSector2DGL::DirectDraw \n");
	79
fa3a3795	80	fSectorData = fSector->GetSectorData();
915dabe1	81
	82	if(fRTS < fSector->fRTS && fSectorData != 0) {
	83	CreateTexture();
	84	fRTS = fSector->fRTS;
	85	}
	86
	87	glPushAttrib(GL_CURRENT_BIT \| GL_DEPTH_BUFFER_BIT \|
	88	GL_COLOR_BUFFER_BIT \| GL_ENABLE_BIT \| GL_POLYGON_BIT);
	89
	90	glDisable(GL_LIGHTING);
	91	glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
	92	glEnable(GL_COLOR_MATERIAL);
	93	glDisable(GL_CULL_FACE);
	94
	95	// Display digits
	96	if(fSectorData != 0) {
	97
	98	const TPCSectorData::SegmentInfo& iSeg = TPCSectorData::GetInnSeg();
	99	const TPCSectorData::SegmentInfo& o1Seg = TPCSectorData::GetOut1Seg();
	100	const TPCSectorData::SegmentInfo& o2Seg = TPCSectorData::GetOut2Seg();
	101
426530cc	102	if(flags.SecSelection()) {
	103
	104	if(fSector->fRnrInn) DisplayNamedQuads(iSeg, 0, 0);
	105	if(fSector->fRnrOut1) DisplayNamedQuads(o1Seg, iSeg.GetNMaxPads(), 0);
	106	if(fSector->fRnrOut2) DisplayNamedQuads(o2Seg, 0, o1Seg.GetNRows());
	107
b56d8877	108	} else {
426530cc	109
	110	if(fSector->fUseTexture) {
	111	//texture
	112	glEnable(GL_BLEND);
	113	glDepthMask(GL_FALSE);
	114	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	115
	116	glPolygonOffset(2,2);
	117	glEnable(GL_POLYGON_OFFSET_FILL);
	118
	119	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
	120	glBindTexture(GL_TEXTURE_2D, fTexture);
	121	glEnable(GL_TEXTURE_2D);
	122
	123	if(fSector->fRnrInn) DisplayTexture(iSeg, 0, 0);
	124	if(fSector->fRnrOut1) DisplayTexture(o1Seg, iSeg.GetNMaxPads(), 0);
	125	if(fSector->fRnrOut2) DisplayTexture(o2Seg, 0, o1Seg.GetNRows());
	126
	127	glDisable(GL_TEXTURE_2D);
	128	} else {
	129	if(fSector->fRnrInn) DisplayQuads(iSeg, 0, 0);
	130	if(fSector->fRnrOut1) DisplayQuads(o1Seg, iSeg.GetNMaxPads(), 0);
	131	if(fSector->fRnrOut2) DisplayQuads(o2Seg, 0, o1Seg.GetNRows());
	132	}
	133	glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
	134	DisplayFrame();
915dabe1	135	}
915dabe1	136
426530cc	137	}
915dabe1	138
	139	glPopAttrib();
	140	}
	141
	142	/**************************************************************************/
	143	// Data import
	144	/**************************************************************************/
	145
	146	void TPCSector2DGL::LoadPadrow(TPCSectorData::RowIterator& iter,
	147	Int_t row, Int_t col_off) const
	148	{
b56d8877	149	Int_t padVal;
915dabe1	150	Int_t time, val;
915dabe1	151
b56d8877	152	Int_t minTime = fSector->fMinTime;
	153	Int_t maxTime = fSector->fMaxTime;
	154	Bool_t halfBorderTime = ((maxTime - minTime) % 2 == 0);
915dabe1	155
	156	UChar_t* img_pos = GetRowCol(row, col_off);
	157	while (iter.NextPad()) {
b56d8877	158	padVal = 0;
915dabe1	159
	160	while (iter.Next()) {
	161	time = iter.Time();
	162	val = iter.Signal();
	163
b56d8877	164	if(time < minTime \|\| time > maxTime)
	165	continue;
	166
915dabe1	167	if(fSector->fShowMax) {
b56d8877	168	if(val > padVal) {
b56d8877	169	padVal = val;
915dabe1	170	}
915dabe1	171	} else {
b56d8877	172	if(halfBorderTime && (time == minTime \|\| time == maxTime))
	173	padVal += val/2;
	174	else
	175	padVal += val;
915dabe1	176	}
	177	}
	178
b56d8877	179	if(fSector->fShowMax == kFALSE && fSector->fAverage) {
	180	padVal = (Int_t)((Float_t)padVal / (maxTime - minTime));
	181	}
	182	padVal = TMath::Min(padVal, fSector->fMaxVal);
	183	if(padVal > fSector->fThreshold)
891e4bb4	184	fSector->ColorFromArray(padVal, img_pos);
915dabe1	185	img_pos += 4;
	186	}
	187	}
	188
	189	/**************************************************************************/
	190
	191	void TPCSector2DGL::CreateTexture() const
	192	{
	193	if (fImage == 0 ) {
	194	fImage = new UChar_t[fgkTextureByteSize];
	195	glGenTextures(1, &fTexture);
	196	}
	197	memset(fImage, 0, fgkTextureByteSize);
	198
	199	Int_t rowOff[3], colOff[3];
b56d8877	200	Bool_t isOn[3];
	201	rowOff[0] = 0;
	202	rowOff[1] = rowOff[2] = -TPCSectorData::GetSeg(1).GetFirstRow();
	203	colOff[0] = colOff[2] = 0;
092578a7	204	colOff[1] = TPCSectorData::GetSeg(0).GetNMaxPads();
b56d8877	205	isOn[0] = fSector->fRnrInn;
	206	isOn[1] = fSector->fRnrOut1;
	207	isOn[2] = fSector->fRnrOut2;
915dabe1	208
891e4bb4	209	fSector->SetupColorArray();
891e4bb4	210
915dabe1	211	// Loop over 3 main segments
915dabe1	212	for (Int_t sId = 0; sId <= 2; ++sId) {
b56d8877	213	if(isOn[sId] == kFALSE)
b56d8877	214	continue;
915dabe1	215	const TPCSectorData::SegmentInfo& sInfo = TPCSectorData::GetSeg(sId);
	216	for (Int_t row=sInfo.GetFirstRow(); row<=sInfo.GetLastRow(); ++row) {
	217	TPCSectorData::RowIterator i = fSectorData->MakeRowIterator(row);
	218	Int_t offset = (sInfo.GetNMaxPads() - TPCSectorData::GetNPadsInRow(row))/2;
	219	LoadPadrow(i, row + rowOff[sId], offset + colOff[sId]);
	220	}
	221	}
	222
	223	glBindTexture (GL_TEXTURE_2D, fTexture);
	224	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,GL_REPEAT);
	225	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,GL_REPEAT);
	226	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
	227	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
426530cc	228	glTexEnvf (GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE, GL_REPLACE);
915dabe1	229	glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, fgkTextureWidth, fgkTextureHeight,
	230	0, GL_RGBA, GL_UNSIGNED_BYTE, fImage);
	231
	232	}
	233
	234	/**************************************************************************/
	235	// Data display
	236	/**************************************************************************/
	237
426530cc	238	void TPCSector2DGL::DisplayTexture(const TPCSectorData::SegmentInfo& seg,
426530cc	239	Int_t startCol, Int_t startRow) const
915dabe1	240	{
426530cc	241	Float_t w = seg.GetNMaxPads()*seg.GetPadWidth()/2;
	242	Float_t y1 = seg.GetRLow();
	243	Float_t y2 = y1 + seg.GetNRows()*seg.GetPadHeight();
	244
915dabe1	245	Float_t u1 = (Float_t) startCol / fgkTextureWidth;
915dabe1	246	Float_t v1 = (Float_t) startRow / fgkTextureHeight;
426530cc	247	Float_t u2 = u1 + (Float_t) seg.GetNMaxPads() / fgkTextureWidth;
426530cc	248	Float_t v2 = v1 + (Float_t) seg.GetNRows() / fgkTextureHeight;
915dabe1	249
915dabe1	250	glBegin(GL_QUADS);
426530cc	251	glTexCoord2f(u1, v1); glVertex2f(-w, y1);
	252	glTexCoord2f(u1, v2); glVertex2f(-w, y2);
	253	glTexCoord2f(u2, v2); glVertex2f( w, y2);
	254	glTexCoord2f(u2, v1); glVertex2f( w, y1);
915dabe1	255	glEnd();
	256	}
	257
	258	/**************************************************************************/
	259
426530cc	260	void TPCSector2DGL::DisplayQuads(const TPCSectorData::SegmentInfo& seg,
426530cc	261	Int_t startCol, Int_t startRow) const
915dabe1	262	{
915dabe1	263	Float_t y_d, y_u;
915dabe1	264	Float_t x_off, x;
426530cc	265	Float_t padW = seg.GetPadWidth();
426530cc	266	Float_t padH = seg.GetPadHeight();
915dabe1	267
915dabe1	268	glBegin(GL_QUADS);
426530cc	269	for (Int_t row=0; row<seg.GetNRows(); row++) {
426530cc	270	y_d = seg.GetRLow() + row*padH;
915dabe1	271	y_u = y_d + padH;
426530cc	272	x_off = -seg.GetNMaxPads()*padW/2;
	273	Int_t tpcRow = row + seg.GetFirstRow();
	274	Int_t deltaPad = (seg.GetNMaxPads() - TPCSectorData::GetNPadsInRow(tpcRow))/2;
	275	Int_t maxPad = seg.GetNMaxPads() - deltaPad;
	276	UChar_t *pix = GetRowCol(row + startRow, startCol + deltaPad);
	277	for (Int_t pad=deltaPad; pad<maxPad; pad++, pix+=4) {
915dabe1	278	x = x_off + pad*padW;
	279	if (pix[3] != 0) {
	280	glColor4ubv(pix);
	281	glVertex2f(x+padW, y_d);
	282	glVertex2f(x, y_d);
	283	glVertex2f(x, y_u);
	284	glVertex2f(x+padW, y_u);
	285	}
	286	}
	287	}
	288	glEnd();
	289	}
	290
426530cc	291	void TPCSector2DGL::DisplayNamedQuads(const TPCSectorData::SegmentInfo& seg,
	292	Int_t startCol, Int_t startRow) const
	293	{
	294	Float_t y_d, y_u;
	295	Float_t x_off, x;
	296	Float_t padW = seg.GetPadWidth();
	297	Float_t padH = seg.GetPadHeight();
	298
	299	glPushName(0);
	300	for (Int_t row=0; row<seg.GetNRows(); row++) {
	301	y_d = seg.GetRLow() + row*padH;
	302	y_u = y_d + padH;
	303	x_off = -seg.GetNMaxPads()*padW/2;
	304	Int_t tpcRow = row + seg.GetFirstRow();
	305	glLoadName(tpcRow);
	306	Int_t deltaPad = (seg.GetNMaxPads() - TPCSectorData::GetNPadsInRow(tpcRow))/2;
	307	Int_t maxPad = seg.GetNMaxPads() - deltaPad;
	308	UChar_t *pix = GetRowCol(row + startRow, startCol + deltaPad);
	309	glPushName(0);
	310	for (Int_t pad=deltaPad; pad<maxPad; pad++, pix+=4) {
	311	x = x_off + pad*padW;
	312	// !!! Potentially replace following 'if', add an option to TPCSector2D.
	313	// !!! Details depend on how data is processed during extraction.
	314	if (pix[3] != 0) {
	315	glLoadName(pad - deltaPad);
	316	glBegin(GL_QUADS);
	317	glVertex2f(x+padW, y_d);
	318	glVertex2f(x, y_d);
	319	glVertex2f(x, y_u);
	320	glVertex2f(x+padW, y_u);
	321	glEnd();
	322	}
	323	}
	324	glPopName();
	325	}
	326	glPopName();
	327	}
	328
915dabe1	329	/**************************************************************************/
	330	// Frame drawing
	331	/**************************************************************************/
	332
	333	void TPCSector2DGL::TraceStepsUp(const TPCSectorData::SegmentInfo& s)
	334	{
	335	Float_t x = -(s.GetNMaxPads()1.0/2 - s.GetNYSteps())s.GetPadWidth();
	336	Float_t y = s.GetRLow();
	337	glVertex2f(x, y);
	338	for (Int_t i=0; i<s.GetNYSteps(); ++i) {
	339	y = s.GetYStep(i);
	340	glVertex2f(x, y);
	341	x -= s.GetPadWidth();
	342	glVertex2f(x, y);
	343	}
	344	y = s.GetRLow() + s.GetNRows()*s.GetPadHeight();
	345	glVertex2f(-s.GetNMaxPads()*s.GetPadWidth()/2, y);
	346	}
	347
	348	void TPCSector2DGL::TraceStepsDown(const TPCSectorData::SegmentInfo& s)
	349	{
	350	Float_t x = s.GetNMaxPads()*s.GetPadWidth()/2;
	351	Float_t y = s.GetRLow() + s.GetNRows()*s.GetPadHeight();
	352	glVertex2f(x, y);
	353	for (Int_t i=s.GetNYSteps() - 1; i>=0; --i) {
	354	y = s.GetYStep(i);
	355	glVertex2f(x, y);
	356	x -= s.GetPadWidth();
	357	glVertex2f(x, y);
	358	}
	359	y = s.GetRLow();
	360	glVertex2f((0.5s.GetNMaxPads() - s.GetNYSteps())s.GetPadWidth(), y);
	361	}
	362
	363	void TPCSector2DGL::DisplayFrame() const
	364	{
092578a7	365	UChar_t col[4];
	366	ColorFromIdx(fSector->fFrameColor, col);
	367	glColor4ubv(col);
915dabe1	368
b56d8877	369	if(fSector->fRnrInn) {
	370	glBegin(GL_POLYGON);
	371	TraceStepsUp (TPCSectorData::GetInnSeg());
	372	TraceStepsDown(TPCSectorData::GetInnSeg());
	373	glEnd();
	374	}
	375	if(fSector->fRnrOut1) {
	376	glBegin(GL_POLYGON);
	377	TraceStepsUp (TPCSectorData::GetOut1Seg());
	378	TraceStepsDown(TPCSectorData::GetOut1Seg());
	379	glEnd();
	380	}
	381	if(fSector->fRnrOut2) {
	382	glBegin(GL_POLYGON);
	383	TraceStepsUp (TPCSectorData::GetOut2Seg());
	384	TraceStepsDown(TPCSectorData::GetOut2Seg());
	385	glEnd();
	386	}
915dabe1	387	}