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TEveCaloLegoGL.cxx
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TEveCaloLegoGL.cxx
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// @(#)root/eve:$Id$
// Author: Alja Mrak-Tadel 2007
/*************************************************************************
* Copyright (C) 1995-2007, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#include "TAxis.h"
#include "TH2.h"
#include "THLimitsFinder.h"
#include "TGLViewer.h"
#include "TGLIncludes.h"
#include "TGLPhysicalShape.h"
#include "TGLRnrCtx.h"
#include "TGLSelectRecord.h"
#include "TGLScene.h"
#include "TGLCamera.h"
#include "TGLUtil.h"
#include "TColor.h"
#include "TROOT.h"
#include "TEveCaloLegoGL.h"
#include "TEveCalo.h"
#include "TEveManager.h"
#include "TEveRGBAPalette.h"
#include <algorithm>
/** \class TEveCaloLegoGL
\ingroup TEve
OpenGL renderer class for TEveCaloLego.
*/
ClassImp(TEveCaloLegoGL);
////////////////////////////////////////////////////////////////////////////////
/// Constructor.
TEveCaloLegoGL::TEveCaloLegoGL() :
TGLObject(),
fGridColor(-1),
fFontColor(-1),
fEtaAxis(0),
fPhiAxis(0),
fZAxis(0),
fM(0),
fDLCacheOK(kFALSE),
fMaxVal(0),
fValToPixel(0),
fCurrentPixelsPerBin(0),
fCells3D(kTRUE),
fBinStep(-1)
{
fDLCache = kFALSE;
fEtaAxis = new TAxis();
fPhiAxis = new TAxis();
fZAxis = new TAxis();
fAxisPainter.SetFontMode(TGLFont::kPixmap);
}
////////////////////////////////////////////////////////////////////////////////
/// Destructor.
TEveCaloLegoGL::~TEveCaloLegoGL()
{
DLCachePurge();
delete fEtaAxis;
delete fPhiAxis;
delete fZAxis;
}
////////////////////////////////////////////////////////////////////////////////
/// Set model object.
Bool_t TEveCaloLegoGL::SetModel(TObject* obj, const Option_t* /*opt*/)
{
fM = SetModelDynCast<TEveCaloLego>(obj);
return kTRUE;
}
////////////////////////////////////////////////////////////////////////////////
/// Set bounding box.
void TEveCaloLegoGL::SetBBox()
{
SetAxisAlignedBBox(((TEveCaloLego*)fExternalObj)->AssertBBox());
}
////////////////////////////////////////////////////////////////////////////////
/// Drop all display-list definitions.
void TEveCaloLegoGL::DLCacheDrop()
{
fDLCacheOK = kFALSE;
for (SliceDLMap_i i = fDLMap.begin(); i != fDLMap.end(); ++i)
i->second = 0;
TGLObject::DLCacheDrop();
}
////////////////////////////////////////////////////////////////////////////////
/// Unregister all display-lists.
void TEveCaloLegoGL::DLCachePurge()
{
// all lego cells
fDLCacheOK = kFALSE;
if (! fDLMap.empty()) {
for (SliceDLMap_i i = fDLMap.begin(); i != fDLMap.end(); ++i) {
if (i->second) {
PurgeDLRange(i->second, 1);
i->second = 0;
}
}
}
TGLObject::DLCachePurge();
}
////////////////////////////////////////////////////////////////////////////////
/// Draw an axis-aligned box using quads.
/// ~~~ {.cpp}
/// z
/// |
/// |
/// |________y
/// / 6-------7
/// / /| /|
/// x 5-------4 |
/// | 2-----|-3
/// |/ |/
/// 1-------0
/// ~~~
void TEveCaloLegoGL::MakeQuad(Float_t x1, Float_t y1, Float_t z1,
Float_t xw, Float_t yw, Float_t h) const
{
Float_t x2 = x1 + xw;
Float_t y2 = y1 + yw;
Float_t z2 = z1 + h;
if (x1 < fM->GetEtaMin()) x1 = fM->GetEtaMin();
if (x2 > fM->GetEtaMax()) x2 = fM->GetEtaMax();
if (y1 < fM->GetPhiMin()) y1 = fM->GetPhiMin();
if (y2 > fM->GetPhiMax()) y2 = fM->GetPhiMax();
glBegin(GL_QUADS);
{
// bottom 0123
glNormal3f(0, 0, -1);
glVertex3f(x2, y2, z1);
glVertex3f(x2, y1, z1);
glVertex3f(x1, y1, z1);
glVertex3f(x1, y2, z1);
// top 4765
glNormal3f(0, 0, 1);
glVertex3f(x2, y2, z2);
glVertex3f(x1, y2, z2);
glVertex3f(x1, y1, z2);
glVertex3f(x2, y1, z2);
// back 0451
glNormal3f(1, 0, 0);
glVertex3f(x2, y2, z1);
glVertex3f(x2, y2, z2);
glVertex3f(x2, y1, z2);
glVertex3f(x2, y1, z1);
// front 3267
glNormal3f(-1, 0, 0);
glVertex3f(x1, y2, z1);
glVertex3f(x1, y1, z1);
glVertex3f(x1, y1, z2);
glVertex3f(x1, y2, z2);
// left 0374
glNormal3f(0, 1, 0);
glVertex3f(x2, y2, z1);
glVertex3f(x1, y2, z1);
glVertex3f(x1, y2, z2);
glVertex3f(x2, y2, z2);
// right 1562
glNormal3f(0, -1, 0);
glVertex3f(x2, y1, z1);
glVertex3f(x2, y1, z2);
glVertex3f(x1, y1, z2);
glVertex3f(x1, y1, z1);
}
glEnd();
}
////////////////////////////////////////////////////////////////////////////////
/// Create display-list that draws histogram bars for non-rebinned data.
/// It is used for filled and outline passes.
void TEveCaloLegoGL::Make3DDisplayList(TEveCaloData::vCellId_t& cellList, SliceDLMap_t& dlMap, Bool_t selection) const
{
TEveCaloData::CellData_t cellData;
Int_t prevTower = 0;
Float_t offset = 0;
// ids in eta phi rng
Int_t nSlices = fM->fData->GetNSlices();
for (Int_t s = 0; s < nSlices; ++s)
{
if (dlMap.empty() || dlMap[s] == 0)
dlMap[s] = glGenLists(1);
glNewList(dlMap[s], GL_COMPILE);
for (UInt_t i = 0; i < cellList.size(); ++i)
{
if (cellList[i].fSlice > s) continue;
if (cellList[i].fTower != prevTower) {
offset = 0;
prevTower = cellList[i].fTower;
}
fM->fData->GetCellData(cellList[i], cellData);
if (s == cellList[i].fSlice)
{
if (selection) glLoadName(i);
WrapTwoPi(cellData.fPhiMin, cellData.fPhiMax);
MakeQuad(cellData.EtaMin(), cellData.PhiMin(), offset,
cellData.EtaDelta(), cellData.PhiDelta(), cellData.Value(fM->fPlotEt));
}
offset += cellData.Value(fM->fPlotEt);
}
glEndList();
}
}
////////////////////////////////////////////////////////////////////////////////
/// Create display-list that draws histogram bars for rebinned data.
/// It is used for filled and outline passes.
void TEveCaloLegoGL::Make3DDisplayListRebin(TEveCaloData::RebinData_t& rebinData, SliceDLMap_t& dlMap, Bool_t selection) const
{
Int_t nSlices = fM->fData->GetNSlices();
Float_t *vals;
Float_t offset;
Float_t y0, y1;
for (Int_t s = 0; s < nSlices; ++s)
{
if (dlMap.empty() || dlMap[s] == 0)
dlMap[s] = glGenLists(1);
glNewList(dlMap[s], GL_COMPILE);
for (Int_t i = 1; i <= fEtaAxis->GetNbins(); ++i)
{
for (Int_t j = 1; j <= fPhiAxis->GetNbins(); ++j)
{
const Int_t bin = (i)+(j)*(fEtaAxis->GetNbins()+2);
if (rebinData.fBinData[bin] !=-1)
{
vals = rebinData.GetSliceVals(bin);
offset =0;
for (Int_t t = 0; t < s; ++t)
offset += vals[t];
y0 = fPhiAxis->GetBinLowEdge(j);
y1 = fPhiAxis->GetBinUpEdge(j);
WrapTwoPi(y0, y1);
if (selection) glLoadName(bin);
MakeQuad(fEtaAxis->GetBinLowEdge(i), y0, offset,
fEtaAxis->GetBinWidth(i), y1-y0, vals[s]);
}
}
}
glEndList();
}
}
////////////////////////////////////////////////////////////////////////////////
/// Set the axis 3D title position.
void TEveCaloLegoGL::SetAxis3DTitlePos(TGLRnrCtx &rnrCtx, Float_t x0, Float_t x1, Float_t y0, Float_t y1) const
{
const GLdouble *pm = rnrCtx.RefCamera().RefLastNoPickProjM().CArr();
GLdouble mm[16];
GLint vp[4];
glGetDoublev(GL_MODELVIEW_MATRIX, mm);
glGetIntegerv(GL_VIEWPORT, vp);
GLdouble projX[4], projY[4], projZ[4];
GLdouble cornerX[4];
GLdouble cornerY[4];
cornerX[0] = x0; cornerY[0] = y0;
cornerX[1] = x1; cornerY[1] = y0;
cornerX[2] = x1; cornerY[2] = y1;
cornerX[3] = x0; cornerY[3] = y1;
gluProject(cornerX[0], cornerY[0], 0, mm, pm, vp, &projX[0], &projY[0], &projZ[0]);
gluProject(cornerX[1], cornerY[1], 0, mm, pm, vp, &projX[1], &projY[1], &projZ[1]);
gluProject(cornerX[2], cornerY[2], 0, mm, pm, vp, &projX[2], &projY[2], &projZ[2]);
gluProject(cornerX[3], cornerY[3], 0, mm, pm, vp, &projX[3], &projY[3], &projZ[3]);
// Z axis location (left most corner)
//
Int_t idxLeft = 0;
Float_t xt = projX[0];
for (Int_t i = 1; i < 4; ++i) {
if (projX[i] < xt) {
xt = projX[i];
idxLeft = i;
}
}
fZAxisTitlePos.Set(cornerX[idxLeft], cornerY[idxLeft], 1.05 * fMaxVal);
// XY axis location (closest to eye) first
//
Float_t zt = 1.f;
Float_t zMin = 0.f;
Int_t idxFront = 0;
for (Int_t i = 0; i < 4; ++i) {
if (projZ[i] < zt) {
zt = projZ[i];
idxFront = i;
}
if (projZ[i] > zMin) zMin = projZ[i];
}
Int_t xyIdx = idxFront;
if (zMin - zt < 1e-2) xyIdx = 0; // avoid flipping in front view
switch (xyIdx) {
case 0:
fXAxisTitlePos.fX = x1;
fXAxisTitlePos.fY = y0;
fYAxisTitlePos.fX = x0;
fYAxisTitlePos.fY = y1;
break;
case 1:
fXAxisTitlePos.fX = x0;
fXAxisTitlePos.fY = y0;
fYAxisTitlePos.fX = x1;
fYAxisTitlePos.fY = y1;
break;
case 2:
fXAxisTitlePos.fX = x0;
fXAxisTitlePos.fY = y1;
fYAxisTitlePos.fX = x1;
fYAxisTitlePos.fY = y0;
break;
case 3:
fXAxisTitlePos.fX = x1;
fXAxisTitlePos.fY = y1;
fYAxisTitlePos.fX = x0;
fYAxisTitlePos.fY = y0;
break;
}
// move title 5% over the axis length
Float_t off = 0.05;
Float_t tOffX = (x1-x0) * off; if (fYAxisTitlePos.fX > x0) tOffX = -tOffX;
Float_t tOffY = (y1-y0) * off; if (fXAxisTitlePos.fY > y0) tOffY = -tOffY;
fXAxisTitlePos.fX += tOffX;
fYAxisTitlePos.fY += tOffY;
// frame box
//
if (fM->fBoxMode)
{
// get corner closest to eye excluding left corner
Double_t zm = 1.f;
Int_t idxDepthT = 0;
for (Int_t i = 0; i < 4; ++i)
{
if (projZ[i] < zm && projZ[i] >= zt && i != idxFront )
{
zm = projZ[i];
idxDepthT = i;
}
}
if (idxFront == idxLeft) idxFront =idxDepthT;
switch (idxFront)
{
case 0:
fBackPlaneXConst[0].Set(x1, y0, 0); fBackPlaneXConst[1].Set(x1, y1, 0);
fBackPlaneYConst[0].Set(x0, y1, 0); fBackPlaneYConst[1].Set(x1, y1, 0);
break;
case 1:
fBackPlaneXConst[0].Set(x0, y0, 0); fBackPlaneXConst[1].Set(x0, y1, 0);
fBackPlaneYConst[0].Set(x0, y1, 0); fBackPlaneYConst[1].Set(x1, y1, 0);
break;
case 2:
fBackPlaneXConst[0].Set(x0, y0, 0); fBackPlaneXConst[1].Set(x0, y1, 0);
fBackPlaneYConst[0].Set(x0, y0, 0); fBackPlaneYConst[1].Set(x1, y0, 0);
break;
case 3:
fBackPlaneXConst[0].Set(x1, y0, 0); fBackPlaneXConst[1].Set(x1, y1, 0);
fBackPlaneYConst[0].Set(x0, y0, 0); fBackPlaneYConst[1].Set(x1, y0, 0);
break;
}
}
}
////////////////////////////////////////////////////////////////////////////////
/// Draw z-axis and z-box at the appropriate grid corner-point including
/// tick-marks and labels.
void TEveCaloLegoGL::DrawAxis3D(TGLRnrCtx & rnrCtx) const
{
// set font size first depending on size of projected axis
TGLMatrix mm;
GLdouble pm[16];
glGetDoublev(GL_MODELVIEW_MATRIX, mm.Arr());
glGetDoublev(GL_PROJECTION_MATRIX, pm);
Int_t* vp = rnrCtx.RefCamera().RefViewport().CArr();
GLdouble dn[3];
GLdouble up[3];
gluProject(fXAxisTitlePos.fX, fXAxisTitlePos.fY, fXAxisTitlePos.fZ, mm.Arr(), pm, vp, &up[0], &up[1], &up[2]);
gluProject(fYAxisTitlePos.fX, fYAxisTitlePos.fY, fYAxisTitlePos.fZ, mm.Arr(), pm, vp, &dn[0], &dn[1], &dn[2]);
Float_t len = TMath::Sqrt((up[0] - dn[0]) * (up[0] - dn[0])
+ (up[1] - dn[1]) * (up[1] - dn[1])
+ (up[2] - dn[2]) * (up[2] - dn[2]));
len = TMath::Min(len, rnrCtx.RefCamera().RefViewport().Diagonal()*0.7f);
len /= TMath::Sqrt2();
TGLVertex3 worldRef(fZAxisTitlePos.fX, fZAxisTitlePos.fY, fZAxisTitlePos.fZ);
fAxisPainter.RefTMOff(0) = rnrCtx.RefCamera().ViewportDeltaToWorld(worldRef, -len, 0, &mm);
fAxisPainter.SetLabelPixelFontSize(TMath::Nint(TMath::Max(len*fM->GetData()->GetEtaBins()->GetLabelSize(), 0.02f)));
fAxisPainter.SetTitlePixelFontSize(TMath::Nint(TMath::Max(len*fM->GetData()->GetEtaBins()->GetLabelSize(), 0.02f)));
Float_t tickLength = TMath::Max(fM->GetData()->GetEtaBins()->GetTickLength(), 0.02f);
Float_t labelOffset = TMath::Max(fM->GetData()->GetEtaBins()->GetLabelOffset(), 0.02f);
// Z axis
//
if (fM->fData->Empty() == kFALSE)
{
Int_t ondiv;
Double_t omin=0, omax=0, bw1;
THLimitsFinder::Optimize(0, fMaxVal, fM->fNZSteps, omin, omax, ondiv, bw1);
worldRef.Set(fZAxisTitlePos.fX, fZAxisTitlePos.fY, fZAxisTitlePos.fZ);
TGLVector3 zto = rnrCtx.RefCamera().ViewportDeltaToWorld(worldRef, 0, fAxisPainter.GetLabelPixelFontSize(), &mm);
// check z axis title does not overalp with label
if ( fZAxisTitlePos.fZ - omax < fAxisPainter.GetLabelPixelFontSize())
fZAxisTitlePos.fZ = omax + zto.Z();
fZAxis->SetAxisColor(fGridColor);
fZAxis->SetLabelColor(fFontColor);
fZAxis->SetTitleColor(fFontColor);
fZAxis->SetNdivisions(fM->fNZSteps*100 + 10);
fZAxis->SetLimits(0, fMaxVal);
fZAxis->SetTitle(fM->GetPlotEt() ? "Et[GeV]" : "E[GeV]");
fAxisPainter.SetTMNDim(1);
fAxisPainter.RefDir().Set(0., 0., 1.);
fAxisPainter.SetLabelAlign(TGLFont::kRight, TGLFont::kCenterV);
glPushMatrix();
glTranslatef(fZAxisTitlePos.fX, fZAxisTitlePos.fY, 0);
// tickmark vector = 10 pixels left
fAxisPainter.RefTitlePos().Set(fAxisPainter.RefTMOff(0).X()*0.05, fAxisPainter.RefTMOff(0).Y()*0.05, fZAxisTitlePos.fZ);
fZAxis->SetLabelOffset(labelOffset);
fZAxis->SetTickLength(tickLength);
fAxisPainter.PaintAxis(rnrCtx, fZAxis);
glPopMatrix();
// draw box frame
//
if (fM->fBoxMode) {
glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT);
// box verticals
TGLUtil::LineWidth(1);
glBegin(GL_LINES);
TGLUtil::Color(fGridColor);
glVertex3f(fBackPlaneXConst[0].fX ,fBackPlaneXConst[0].fY ,0);
glVertex3f(fBackPlaneXConst[0].fX ,fBackPlaneXConst[0].fY ,fMaxVal);
glVertex3f(fBackPlaneXConst[1].fX ,fBackPlaneXConst[1].fY ,0);
glVertex3f(fBackPlaneXConst[1].fX ,fBackPlaneXConst[1].fY ,fMaxVal);
glVertex3f(fBackPlaneYConst[0].fX ,fBackPlaneYConst[0].fY ,0);
glVertex3f(fBackPlaneYConst[0].fX ,fBackPlaneYConst[0].fY ,fMaxVal);
glVertex3f(fBackPlaneYConst[1].fX ,fBackPlaneYConst[1].fY ,0);
glVertex3f(fBackPlaneYConst[1].fX ,fBackPlaneYConst[1].fY ,fMaxVal);
// box top
glVertex3f(fBackPlaneXConst[0].fX ,fBackPlaneXConst[0].fY ,fMaxVal);
glVertex3f(fBackPlaneXConst[1].fX ,fBackPlaneXConst[1].fY ,fMaxVal);
glVertex3f(fBackPlaneYConst[0].fX ,fBackPlaneYConst[0].fY ,fMaxVal);
glVertex3f(fBackPlaneYConst[1].fX ,fBackPlaneYConst[1].fY ,fMaxVal);
glEnd();
// box horizontals stippled
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0x5555);
glBegin(GL_LINES);
Float_t hz = bw1;
for (Int_t i = 1; i <= ondiv; ++i, hz += bw1) {
glVertex3f(fBackPlaneXConst[0].fX ,fBackPlaneXConst[0].fY ,hz);
glVertex3f(fBackPlaneXConst[1].fX ,fBackPlaneXConst[1].fY ,hz);
glVertex3f(fBackPlaneYConst[0].fX ,fBackPlaneYConst[0].fY ,hz);
glVertex3f(fBackPlaneYConst[1].fX ,fBackPlaneYConst[1].fY ,hz);
}
glEnd();
glPopAttrib();
}
}
// XY Axis
//
Float_t yOff = fM->GetPhiRng();
if (fXAxisTitlePos.fY < fM->GetPhiMax()) yOff = -yOff;
Float_t xOff = fM->GetEtaRng();
if (fYAxisTitlePos.fX < fM->GetEtaMax()) xOff = -xOff;
TAxis ax;
ax.SetAxisColor(fGridColor);
ax.SetLabelColor(fFontColor);
ax.SetTitleColor(fFontColor);
ax.SetTitleFont(fM->GetData()->GetEtaBins()->GetTitleFont());
ax.SetLabelOffset(labelOffset);
ax.SetTickLength(tickLength);
fAxisPainter.SetTMNDim(2);
fAxisPainter.RefTMOff(1).Set(0, 0, -fMaxVal);
fAxisPainter.SetLabelAlign(TGLFont::kCenterH, TGLFont::kBottom);
// eta
glPushMatrix();
fAxisPainter.RefDir().Set(1, 0, 0);
fAxisPainter.RefTMOff(0).Set(0, yOff, 0);
glTranslatef(0, fXAxisTitlePos.fY, 0);
ax.SetNdivisions(fM->GetData()->GetEtaBins()->GetNdivisions());
ax.SetLimits(fM->GetEtaMin(), fM->GetEtaMax());
ax.SetTitle(fM->GetData()->GetEtaBins()->GetTitle());
fAxisPainter.RefTitlePos().Set(fXAxisTitlePos.fX, yOff*1.5*ax.GetTickLength(), -fMaxVal*ax.GetTickLength());
fAxisPainter.PaintAxis(rnrCtx, &ax);
glPopMatrix();
// phi
fAxisPainter.RefDir().Set(0, 1, 0);
fAxisPainter.RefTMOff(0).Set(xOff, 0, 0);
ax.SetNdivisions(fM->GetData()->GetPhiBins()->GetNdivisions());
ax.SetLimits(fM->GetPhiMin(), fM->GetPhiMax());
ax.SetTitle(fM->GetData()->GetPhiBins()->GetTitle());
glPushMatrix();
glTranslatef(fYAxisTitlePos.fX, 0, 0);
fAxisPainter.RefTitlePos().Set( xOff*1.5*ax.GetTickLength(), fYAxisTitlePos.fY, -fMaxVal*ax.GetTickLength());
fAxisPainter.PaintAxis(rnrCtx, &ax);
glPopMatrix();
} // DrawAxis3D
////////////////////////////////////////////////////////////////////////////////
/// Get scale for matrix.
void TEveCaloLegoGL::GetScaleForMatrix(Float_t& sx, Float_t& sy, Float_t& sz) const
{
Double_t em, eM, pm, pM;
fM->fData->GetEtaLimits(em, eM);
fM->fData->GetPhiLimits(pm, pM);
Double_t unit = ((eM - em) < (pM - pm)) ? (eM - em) : (pM - pm);
sx = (eM - em) / (fM->GetEtaRng() * unit);
sy = (pM - pm) / (fM->GetPhiRng() * unit);
sz = 1;
if (fM->fScaleAbs)
{
sz = fM->GetMaxTowerH() / fM->fMaxValAbs;
}
else if (!fM->fData->Empty())
{
sz = fM->GetMaxTowerH() / fMaxVal;
}
}
////////////////////////////////////////////////////////////////////////////////
/// Draw XY axis.
void TEveCaloLegoGL::DrawAxis2D(TGLRnrCtx & rnrCtx) const
{
if (fM->GetData()->Empty())
fAxisPainter.SetTMNDim(1);
TGLCamera& cam = rnrCtx.RefCamera();
TAxis ax;
ax.SetAxisColor(fGridColor);
ax.SetLabelColor(fFontColor);
ax.SetTitleColor(fFontColor);
ax.SetTitleFont(fM->GetData()->GetEtaBins()->GetTitleFont());
ax.SetTitleSize(TMath::Max(fM->GetData()->GetEtaBins()->GetTitleSize(), 0.02f));
ax.SetLabelOffset(TMath::Max(fM->GetData()->GetEtaBins()->GetLabelOffset(), 0.02f));
ax.SetTickLength(TMath::Max(fM->GetData()->GetEtaBins()->GetTickLength(), 0.05f));
// set fonts
fAxisPainter.SetAttAxis(&ax);
// get projected length of diagonal to determine
TGLMatrix mm;
GLdouble pm[16];
GLint vp[4];
glGetDoublev(GL_MODELVIEW_MATRIX, mm.Arr());
glGetDoublev(GL_PROJECTION_MATRIX, pm);
glGetIntegerv(GL_VIEWPORT, vp);
GLdouble dn[3];
GLdouble up[3];
gluProject(fM->GetEtaMin(), fM->GetPhiMin(), 0, mm.Arr(), pm, vp, &dn[0], &dn[1], &dn[2]);
gluProject(fM->GetEtaMax(), fM->GetPhiMax(), 0, mm.Arr(), pm, vp, &up[0], &up[1], &up[2]);
Double_t len = TMath::Sqrt((up[0] - dn[0]) * (up[0] - dn[0])
+ (up[1] - dn[1]) * (up[1] - dn[1])
+ (up[2] - dn[2]) * (up[2] - dn[2]));
// lock upper limit to of relative font size relative to viewport diagonal
Double_t vpLimit = cam.RefViewport().Diagonal()*0.5/TMath::Sqrt2();
len = TMath::Min(len, vpLimit);
// eta
fAxisPainter.SetLabelPixelFontSize(TMath::Nint(len*fM->GetData()->GetEtaBins()->GetLabelSize()));
fAxisPainter.SetTitlePixelFontSize(TMath::Nint(len*fM->GetData()->GetEtaBins()->GetTitleSize()));
ax.SetNdivisions(fM->GetData()->GetEtaBins()->GetNdivisions());
ax.SetLimits(fM->GetEtaMin(), fM->GetEtaMax());
ax.SetTitle(fM->GetData()->GetEtaBins()->GetTitle());
fAxisPainter.RefTitlePos().Set(fM->GetEtaMax(), -fM->GetPhiRng()*(ax.GetTickLength()+ ax.GetLabelOffset()), 0 );
fAxisPainter.RefDir().Set(1, 0, 0);
Float_t tmOffFrustX = cam.FrustumPlane(TGLCamera::kRight).D() + cam.FrustumPlane(TGLCamera::kLeft).D();
fAxisPainter.RefTMOff(0).Set(0, -TMath::Min(fM->GetPhiRng(), tmOffFrustX), 0);
fAxisPainter.SetLabelAlign(TGLFont::kCenterH, TGLFont::kBottom);
glPushMatrix();
glTranslatef(0, fM->GetPhiMin(), 0);
fAxisPainter.PaintAxis(rnrCtx, &ax);
glPopMatrix();
// phi
ax.SetNdivisions(fM->GetData()->GetPhiBins()->GetNdivisions());
ax.SetLimits(fM->GetPhiMin(), fM->GetPhiMax());
ax.SetTitle(fM->GetData()->GetPhiBins()->GetTitle());
fAxisPainter.RefTitlePos().Set(-fM->GetEtaRng()*(ax.GetTickLength()+ ax.GetLabelOffset()), fM->GetPhiMax(), 0);
fAxisPainter.RefDir().Set(0, 1, 0);
Float_t tmOffFrustY = cam.FrustumPlane(TGLCamera::kTop).D() + cam.FrustumPlane(TGLCamera::kBottom).D();
fAxisPainter.RefTMOff(0).Set(-TMath::Min(fM->GetEtaRng(), tmOffFrustY), 0, 0);
fAxisPainter.SetLabelAlign(TGLFont::kRight, TGLFont::kCenterV);
glPushMatrix();
glTranslatef(fM->GetEtaMin(), 0, 0);
fAxisPainter.PaintAxis(rnrCtx, &ax);
glPopMatrix();
fAxisPainter.SetTMNDim(2);
}
////////////////////////////////////////////////////////////////////////////////
/// Calculate view-dependent grid density.
Int_t TEveCaloLegoGL::GetGridStep(TGLRnrCtx &rnrCtx) const
{
TGLCamera &camera = rnrCtx.RefCamera();
Float_t l = -camera.FrustumPlane(TGLCamera::kLeft).D();
Float_t r = camera.FrustumPlane(TGLCamera::kRight).D();
Float_t t = camera.FrustumPlane(TGLCamera::kTop).D();
Float_t b = -camera.FrustumPlane(TGLCamera::kBottom).D();
Float_t frustD = TMath::Hypot(r-l, t-b);
GLint vp[4]; glGetIntegerv(GL_VIEWPORT, vp);
Float_t viewportD = TMath::Sqrt((vp[1] - vp[0]) * (vp[1] - vp[0]) + (vp[3] - vp[1]) * (vp[3] - vp[1]));
Float_t deltaToViewport = viewportD/frustD;
// average bin width
GLdouble em, eM, pm, pM;
fM->GetData()->GetEtaLimits(pm, pM);
fM->GetData()->GetPhiLimits(em, eM);
Int_t i0 = fM->fData->GetEtaBins()->FindBin(fM->GetEtaMin());
Int_t i1 = fM->fData->GetEtaBins()->FindBin(fM->GetEtaMax());
Int_t j0 = fM->fData->GetPhiBins()->FindBin(fM->GetPhiMin());
Int_t j1 = fM->fData->GetPhiBins()->FindBin(fM->GetPhiMax());
Float_t averageBinWidth = TMath::Hypot(eM - em, pM - pm)/TMath::Sqrt((i0 - i1) * (i0 - i1) + (j0 - j1) * (j0 - j1));
Float_t ppb = deltaToViewport*averageBinWidth;
Int_t ngroup = 1;
if (fM->fAutoRebin && fM->fPixelsPerBin > ppb)
{
// limit rebin realtive to number of axis bins
Int_t maxGroup = TMath::Min(fM->fData->GetEtaBins()->GetNbins(), fM->fData->GetPhiBins()->GetNbins())/4;
if (maxGroup > 1) {
ngroup = TMath::Nint(fM->fPixelsPerBin*0.5/ppb); // symetrical rebin factor 2
if (ngroup > maxGroup) ngroup = maxGroup;
}
}
fCurrentPixelsPerBin = TMath::Nint(ppb);
return ngroup;
}
////////////////////////////////////////////////////////////////////////////////
/// Rebin eta, phi axis.
void TEveCaloLegoGL::RebinAxis(TAxis *orig, TAxis *curr) const
{
Double_t center = 0.5 * (orig->GetXmin() + orig->GetXmax());
Int_t idx0 = orig->FindBin(center);
Double_t bc = orig->GetBinCenter(idx0);
if (bc > center) --idx0;
Int_t nbR = TMath::FloorNint(idx0/fBinStep) + TMath::FloorNint((orig->GetNbins() - idx0)/fBinStep);
Int_t off = idx0 - TMath::FloorNint(idx0/fBinStep)*fBinStep;
std::vector<Double_t> bins(nbR + 1);
for (Int_t i = 0; i <= nbR; ++i)
{
bins[i] = orig->GetBinUpEdge(off + i*fBinStep);
}
curr->Set(nbR, &bins[0]);
}
////////////////////////////////////////////////////////////////////////////////
/// Draw basic histogram components: x-y grid
void TEveCaloLegoGL::DrawHistBase(TGLRnrCtx &rnrCtx) const
{
Float_t eta0 = fM->fEtaMin;
Float_t eta1 = fM->fEtaMax;
Float_t phi0 = fM->GetPhiMin();
Float_t phi1 = fM->GetPhiMax();
// XY grid
//
TGLUtil::Color(fGridColor);
TGLUtil::LineWidth(1);
glBegin(GL_LINES);
glVertex2f(eta0, phi0);
glVertex2f(eta0, phi1);
glVertex2f(eta1, phi0);
glVertex2f(eta1, phi1);
glVertex2f(eta0, phi0);
glVertex2f(eta1, phi0);
glVertex2f(eta0, phi1);
glVertex2f(eta1, phi1);
// eta grid
Float_t val;
Int_t neb = fEtaAxis->GetNbins();
for (Int_t i = 0; i<= neb; i++)
{
val = fEtaAxis->GetBinUpEdge(i);
if (val > eta0 && val < eta1 )
{
glVertex2f(val, phi0);
glVertex2f(val, phi1);
}
}
// phi grid
Int_t npb = fPhiAxis->GetNbins();
for (Int_t i = 1; i <= npb; i++) {
val = fPhiAxis->GetBinUpEdge(i);
if (val > phi0 && val < phi1)
{
glVertex2f(eta0, val);
glVertex2f(eta1, val);
}
}
glEnd();
// XYZ axes
//
glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT | GL_POLYGON_BIT);
TGLUtil::LineWidth(2);
if (fCells3D)
{
SetAxis3DTitlePos(rnrCtx, eta0, eta1, phi0, phi1);
DrawAxis3D(rnrCtx);
}
else
{
DrawAxis2D(rnrCtx);
}
glPopAttrib();
}
////////////////////////////////////////////////////////////////////////////////
/// Render the calo lego-plot with OpenGL.
void TEveCaloLegoGL::DrawCells3D(TGLRnrCtx & rnrCtx) const
{
// quads
{
for (SliceDLMap_i i = fDLMap.begin(); i != fDLMap.end(); ++i) {
TGLUtil::ColorTransparency(fM->GetDataSliceColor(i->first), fM->GetData()->GetSliceTransparency(i->first));
glLoadName(i->first);
glPushName(0);
glCallList(i->second);
glPopName();
}
}
// outlines
{
if (rnrCtx.SceneStyle() == TGLRnrCtx::kFill) {
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDisable(GL_POLYGON_OFFSET_FILL);
TGLUtil::Color(1);
for (SliceDLMap_i i = fDLMap.begin(); i != fDLMap.end(); ++i)
glCallList(i->second);
}
}
}
////////////////////////////////////////////////////////////////////////////////
/// Prepare cells 2D data non-rebinned for drawing.
void TEveCaloLegoGL::PrepareCell2DData(TEveCaloData::vCellId_t& cellList, vCell2D_t& cells2D) const
{
Int_t max_energy_slice, cellID=0;
Float_t sum, max_energy;
TEveCaloData::vCellId_t::iterator currentCell = cellList.begin();
TEveCaloData::vCellId_t::iterator nextCell = currentCell;
++nextCell;
while (true)
{
TEveCaloData::CellData_t currentCellData;
TEveCaloData::CellData_t nextCellData;
fM->fData->GetCellData(*currentCell, currentCellData);
sum = max_energy = currentCellData.Value(fM->fPlotEt);
max_energy_slice = currentCell->fSlice;
while (nextCell != cellList.end() && currentCell->fTower == nextCell->fTower)
{
fM->fData->GetCellData(*nextCell, nextCellData);
Float_t energy = nextCellData.Value(fM->fPlotEt);
sum += energy;
if (energy > max_energy)
{
max_energy = energy;
max_energy_slice = nextCell->fSlice;
}
++nextCell;
++cellID;
}
WrapTwoPi(currentCellData.fPhiMin, currentCellData.fPhiMax);
cells2D.push_back(Cell2D_t(cellID, sum, max_energy_slice));
cells2D.back().SetGeom(currentCellData.fEtaMin, currentCellData.fEtaMax,
currentCellData.fPhiMin, currentCellData.fPhiMax);
if (nextCell == cellList.end())
break;
currentCell = nextCell;
++nextCell;
++cellID;
}
}
////////////////////////////////////////////////////////////////////////////////
/// Prepare cells 2D rebinned data for drawing.
void TEveCaloLegoGL::PrepareCell2DDataRebin(TEveCaloData::RebinData_t& rebinData, vCell2D_t& cells2D) const
{
const Int_t nEta = fEtaAxis->GetNbins();
const Int_t nPhi = fPhiAxis->GetNbins();
std::vector<Float_t> vec;
vec.assign((nEta + 2)*(nPhi + 2), 0.f);
std::vector<Float_t> max_e;
std::vector<Int_t> max_e_slice;
max_e.assign((nEta + 2) * (nPhi + 2), 0.f);
max_e_slice.assign((nEta + 2) * (nPhi + 2), -1);
for (UInt_t bin = 0; bin < rebinData.fBinData.size(); ++bin) {
Float_t ssum = 0;
if (rebinData.fBinData[bin] != -1) {
Float_t *val = rebinData.GetSliceVals(bin);
for (Int_t s = 0; s < rebinData.fNSlices; ++s) {
ssum += val[s];
if (val[s] > max_e[bin]) {
max_e[bin] = val[s];
max_e_slice[bin] = s;
}
}
}
vec[bin] = ssum;
}
// smallest threshold
Float_t threshold = fM->GetDataSliceThreshold(0);
for (Int_t s = 1; s < fM->fData->GetNSlices(); ++s) {
if (threshold > fM->GetDataSliceThreshold(s))
threshold = fM->GetDataSliceThreshold(s);
}
// write cells
for (Int_t i = 1; i <= fEtaAxis->GetNbins(); ++i) {
for (Int_t j = 1; j <= fPhiAxis->GetNbins(); ++j) {
const Int_t bin = j * (nEta + 2) + i;
if (vec[bin] > threshold && rebinData.fBinData[bin] != -1) {
cells2D.push_back(Cell2D_t(bin, vec[bin], max_e_slice[bin]));
cells2D.back().SetGeom(fEtaAxis->GetBinLowEdge(i), fEtaAxis->GetBinUpEdge(i),
fPhiAxis->GetBinLowEdge(j), fPhiAxis->GetBinUpEdge(j));
}
}
}
}
////////////////////////////////////////////////////////////////////////////////
/// Draw cells in top view.
void TEveCaloLegoGL::DrawCells2D(TGLRnrCtx &rnrCtx, vCell2D_t& cells2D) const
{
Float_t bws = -1; //smallest bin
Float_t logMax = -1;
Float_t baseOffset = fM->GetFixedHeightValIn2DMode()*fMaxVal;
if (fM->f2DMode == TEveCaloLego::kValColor)
{
fM->AssertPalette();
UChar_t col[4];
for (vCell2D_i i = cells2D.begin(); i != cells2D.end(); ++i)
{
if (rnrCtx.SecSelection()) glLoadName(i->fId);
glBegin(GL_POLYGON);
fM->fPalette->ColorFromValue(TMath::FloorNint(i->fSumVal), col);
col[3] = fM->GetData()->GetSliceTransparency(i->fMaxSlice);
TGLUtil::Color4ubv(col);
Float_t z = fM->GetHasFixedHeightIn2DMode() ? baseOffset : i->fSumVal;
glVertex3f(i->fX0, i->fY0, z);
glVertex3f(i->fX1, i->fY0, z);
glVertex3f(i->fX1, i->fY1, z);
glVertex3f(i->fX0, i->fY1, z);
glEnd();
}
}
else
{
Float_t maxv = 0;
bws = 1e5;
for (vCell2D_i i = fCells2D.begin(); i != fCells2D.end(); ++i)
{
if (i->MinSize() < bws) bws = i->MinSize();
if (i->fSumVal > maxv) maxv = i->fSumVal;
}
bws *= 0.5f;
logMax = TMath::Log10(maxv + 1);
fValToPixel = bws / logMax;
if (rnrCtx.SecSelection())
{
// Special draw for name stack.
for (vCell2D_i i = cells2D.begin(); i != cells2D.end(); ++i)
{
glLoadName(i->fMaxSlice);
glPushName(i->fId);
glBegin(GL_QUADS);
Float_t z = fM->GetHasFixedHeightIn2DMode() ? baseOffset : i->fSumVal;
glVertex3f(i->fX0, i->fY0, z);
glVertex3f(i->fX1, i->fY0, z);
glVertex3f(i->fX1, i->fY1, z);
glVertex3f(i->fX0, i->fY1, z);
glEnd();
glPopName();
}
}
else
{
// Optimised draw without name stack.