--- /dev/null
+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * *
+ * Author: The ALICE Off-line Project. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+/*
+$Log$
+*/
+
+#include "AliMUONSegmentationSlat.h"
+#include "AliMUONSegmentationSlatModule.h"
+#include "AliMUON.h"
+#include "AliMUONChamber.h"
+#include "TArrayI.h"
+#include "TObjArray.h"
+#include "AliRun.h"
+#include <TMath.h>
+#include <iostream.h>
+
+//___________________________________________
+ClassImp(AliMUONSegmentationSlat)
+
+AliMUONSegmentationSlat::AliMUONSegmentationSlat()
+{
+// Default constructor
+ fSlats=0;
+ fNDiv = new TArrayI(4);
+}
+
+void AliMUONSegmentationSlat::SetPadSize(Float_t p1, Float_t p2)
+{
+// Sets the pad (strip) size
+//
+ fDpx=p1;
+ fDpy=p2;
+}
+
+Float_t AliMUONSegmentationSlat::GetAnod(Float_t xhit) const
+{
+// Returns for a hit position xhit the position of the nearest anode wire
+ Float_t wire= (xhit>0)? Int_t(xhit/fWireD)+0.5:Int_t(xhit/fWireD)-0.5;
+ return fWireD*wire;
+}
+
+Float_t AliMUONSegmentationSlat::Dpx(Int_t isec) const
+{
+//
+// Returns x-pad size for given sector isec
+// isec = 100*islat+iregion
+//
+ Int_t islat, iregion;
+ islat = isec/100;
+ iregion = isec%100;
+ return Slat(islat)->Dpx(iregion);
+}
+
+Float_t AliMUONSegmentationSlat::Dpy(Int_t isec) const
+{
+//
+// Returns y-pad (strip) size for given sector isec
+ return fDpy;
+}
+
+void AliMUONSegmentationSlat::SetPadDivision(Int_t ndiv[4])
+{
+//
+// Defines the pad size perp. to the anode wire (y) for different sectors.
+// Pad sizes are defined as integral fractions ndiv of a basis pad size
+// fDpx
+//
+ for (Int_t i=0; i<4; i++) {
+ (*fNDiv)[i]=ndiv[i];
+ }
+}
+
+void AliMUONSegmentationSlat::GlobalToLocal(
+ Float_t x, Float_t y, Float_t z, Int_t &islat, Float_t &xlocal, Float_t &ylocal)
+{
+//
+// Perform local to global transformation for space coordinates
+//
+ Float_t zlocal;
+ Int_t i;
+ Int_t index=-1;
+// Transform According to slat plane z-position: negative side is shifted down
+// positive side is shifted up
+// by half the overlap
+ zlocal = z-fChamber->Z();
+ Float_t ys = y-TMath::Sign(fShift,zlocal);
+
+// Set the signs for the symmetry transformation and transform to first quadrant
+ SetSymmetry(x,ys);
+ Float_t yabs=TMath::Abs(ys);
+ Float_t xabs=TMath::Abs(x);
+
+ Int_t ifirst = (zlocal*ys < Float_t(0))? 0:1;
+//
+// Find slat number
+ for (i=ifirst; i<fNSlats; i+=2) {
+ index=i;
+ if ((yabs >= fYPosition[i]) && (yabs < fYPosition[i]+fSlatY)) break;
+ }
+
+//
+// Transform to local coordinate system
+
+
+ ylocal = yabs-fYPosition[index];
+ xlocal = xabs-fXPosition[index];
+ islat = index;
+ if (i >= fNSlats) {islat = -1; x=-1; y = -1;}
+}
+
+void AliMUONSegmentationSlat::GlobalToLocal(
+ Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal)
+{
+//
+// Perform global to local transformation for pad coordinates
+//
+ Int_t iytemp = TMath::Abs(iy);
+ Int_t index = 0;
+
+ iylocal = iytemp;
+
+//
+// Find slat number (index) and iylocal
+ for (Int_t i=0; i<fNSlats; i++) {
+ iytemp-=Slat(i)->Npy();
+
+
+ if (iytemp <= 0) break;
+ iylocal = iytemp;
+ index=i+1;
+ }
+
+ ixlocal=TMath::Abs(ix);
+ islat=index;
+
+// Done !
+}
+
+void AliMUONSegmentationSlat::
+LocalToGlobal(Int_t islat, Float_t xlocal, Float_t ylocal, Float_t &x, Float_t &y, Float_t &z)
+{
+// Transform from local to global space coordinates
+//
+// upper plane (y>0) even slat number is shifted down
+// upper plane (y>0) odd slat number is shifted up
+// lower plane (y<0) even slat number is shifted up
+// lower plane (y<0) odd slat number is shifted down
+//
+
+ x = (xlocal+fXPosition[islat])*fSym[0];
+ if ((TMath::Even(islat) && fSym[1]>0) || (TMath::Odd(islat)&&fSym[1]<0)) {
+ y=(ylocal+fYPosition[islat])*fSym[1]-fShift;
+ z=-fDz;
+ } else {
+ y=(ylocal+fYPosition[islat])*fSym[1]+fShift;
+ z=fDz;
+ }
+
+ z+=fChamber->Z();
+
+}
+
+
+void AliMUONSegmentationSlat::LocalToGlobal(
+ Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy)
+{
+// Transform from local to global pad coordinates
+//
+ Int_t i;
+ iy=iylocal;
+
+//
+// Find slat number (index) and iylocal
+ for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
+
+ ix=ixlocal*fSym[0];
+ iy=iy*fSym[1];
+}
+
+
+void AliMUONSegmentationSlat::SetSymmetry(Int_t ix, Int_t iy)
+{
+// Set set signs for symmetry transformation
+ fSym[0]=TMath::Sign(1,ix);
+ fSym[1]=TMath::Sign(1,iy);
+
+}
+
+void AliMUONSegmentationSlat::SetSymmetry(Float_t x, Float_t y)
+{
+// Set set signs for symmetry transformation
+ fSym[0]=Int_t (TMath::Sign(1.,x));
+ fSym[1]=Int_t (TMath::Sign(1.,y));
+}
+
+void AliMUONSegmentationSlat::
+GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
+{
+// Returns pad coordinates for given set of space coordinates
+
+ Int_t islat, i;
+ Float_t xlocal, ylocal;
+
+ GlobalToLocal(x,y,z,islat,xlocal,ylocal);
+ if (islat == -1) {
+ ix=0; iy=0; return;
+ }
+
+ Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
+ for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
+
+ ix=ix*Int_t(TMath::Sign(1.,x));
+// Transform y
+ iy=iy*Int_t(TMath::Sign(1.,y));
+}
+
+void AliMUONSegmentationSlat::
+GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z)
+{
+// Returns real coordinates (x,y) for given pad coordinates (ix,iy)
+//
+ Int_t islat, ixlocal, iylocal;
+//
+// Delegation of transforamtion to slat
+ GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
+ Slat(islat)->GetPadC(ixlocal, iylocal, x, y);
+// Slat offset
+ x+=fXPosition[islat];
+ y+=fYPosition[islat];
+
+// Symmetry transformation of quadrants
+ x=x*TMath::Sign(1,ix);
+ y=y*TMath::Sign(1,iy);
+
+// Shift of slat planes
+ if ((TMath::Even(islat)&&iy>0) || (TMath::Odd(islat)&&iy<0)) {
+ y-=fShift;
+ z=-fDz+fChamber->Z();
+ } else {
+ y+=fShift;
+ z=fDz+fChamber->Z();
+ }
+}
+
+Int_t AliMUONSegmentationSlat::ISector()
+{
+// Returns current sector during tracking
+ Int_t iregion;
+
+ iregion = fCurrentSlat->ISector();
+ return 100*fSlatIndex+iregion;
+}
+
+Int_t AliMUONSegmentationSlat::Sector(Int_t ix, Int_t iy)
+{
+ Int_t ixlocal, iylocal, iregion, islat;
+
+ GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
+
+ iregion = Slat(islat)->Sector(ixlocal, iylocal);
+ return 100*islat+iregion;
+}
+
+
+void AliMUONSegmentationSlat::SetPad(Int_t ix, Int_t iy)
+{
+ //
+ // Sets virtual pad coordinates, needed for evaluating pad response
+ // outside the tracking program
+ Int_t islat, ixlocal, iylocal;
+
+ SetSymmetry(ix,iy);
+
+ GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
+ fSlatIndex=islat;
+ fCurrentSlat=Slat(islat);
+ fCurrentSlat->SetPad(ixlocal, iylocal);
+}
+
+void AliMUONSegmentationSlat::SetHit(Float_t xhit, Float_t yhit, Float_t zhit)
+{ //
+ // Sets current hit coordinates
+
+ Float_t xlocal, ylocal;
+ Int_t islat;
+
+
+
+ GlobalToLocal(xhit,yhit,zhit,islat,xlocal,ylocal);
+ fSlatIndex=islat;
+ if (islat < 0) printf("\n SetHit: %d", islat);
+
+ fCurrentSlat=Slat(islat);
+ fCurrentSlat->SetHit(xlocal, ylocal);
+}
+
+
+void AliMUONSegmentationSlat::
+FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy)
+{
+// Initialises iteration over pads for charge distribution algorithm
+//
+
+
+
+ Int_t islat;
+ Float_t xlocal, ylocal;
+ GlobalToLocal(xhit, yhit, zhit, islat, xlocal, ylocal);
+ fSlatIndex=islat;
+ fCurrentSlat=Slat(islat);
+ fCurrentSlat->FirstPad(xlocal, ylocal, dx, dy);
+
+}
+
+
+void AliMUONSegmentationSlat::NextPad()
+{
+// Stepper for the iteration over pads
+//
+ fCurrentSlat->NextPad();
+}
+
+
+Int_t AliMUONSegmentationSlat::MorePads()
+// Stopping condition for the iterator over pads
+//
+// Are there more pads in the integration region
+{
+ return fCurrentSlat->MorePads();
+}
+
+void AliMUONSegmentationSlat::
+IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
+{
+// Returns integration limits for current pad
+//
+
+ fCurrentSlat->IntegrationLimits(x1, x2, y1, y2);
+
+}
+
+void AliMUONSegmentationSlat::
+Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
+{
+// Returns list of neighbours of pad with coordinates iX, iY
+
+ Int_t i, xListLocal[10], yListLocal[10], iXlocal, iYlocal, islat;
+
+ SetSymmetry(iX,iY);
+
+ GlobalToLocal(iX, iY, islat, iXlocal, iYlocal);
+
+ Slat(islat)->Neighbours(iXlocal, iYlocal, Nlist, xListLocal, yListLocal);
+
+ for (i=0; i<*Nlist; i++) LocalToGlobal(islat, xListLocal[i], yListLocal[i], Xlist[i], Ylist[i]);
+
+}
+
+
+Int_t AliMUONSegmentationSlat::Ix()
+{
+// Return current pad coordinate ix during stepping
+ Int_t ixl,iyl,ix,iy;
+ ixl=fCurrentSlat->Ix();
+ iyl=fCurrentSlat->Iy();
+
+ LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
+ Int_t ixc, iyc, isc;
+ Float_t xc, yc;
+ GlobalToLocal(ix, iy, isc, ixc, iyc);
+ Slat(isc)->GetPadC(ixc,iyc,xc,yc);
+ return ix;
+}
+
+
+Int_t AliMUONSegmentationSlat::Iy()
+{
+// Return current pad coordinate iy during stepping
+ Int_t ixl,iyl,ix,iy;
+ ixl=fCurrentSlat->Ix();
+ iyl=fCurrentSlat->Iy();
+ LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
+ return iy;
+}
+
+
+
+ // Signal Generation Condition during Stepping
+Int_t AliMUONSegmentationSlat::SigGenCond(Float_t x, Float_t y, Float_t z)
+{
+//
+// True if signal generation condition fullfilled
+ Float_t xlocal, ylocal;
+ Int_t islat;
+ GlobalToLocal(x, y, z, islat, xlocal, ylocal);
+ return Slat(islat)->SigGenCond(xlocal, ylocal, z);
+}
+
+// Initialise signal generation at coord (x,y,z)
+void AliMUONSegmentationSlat::SigGenInit(Float_t x, Float_t y, Float_t z)
+{
+// Initialize the signal generation condition
+//
+ Float_t xlocal, ylocal;
+ Int_t islat;
+
+ GlobalToLocal(x, y, z, islat, xlocal, ylocal);
+ Slat(islat)->SigGenInit(xlocal, ylocal, z);
+}
+
+
+
+void AliMUONSegmentationSlat::Init(Int_t chamber)
+{
+//
+// Initialize slat modules of quadrant +/+
+// The other three quadrants are handled through symmetry transformations
+//
+ printf("\n Initialise segmentation Slat \n");
+//
+
+// Initialize Slat modules
+ Int_t islat, i;
+ Int_t ndiv[4];
+// Pad division
+ for (i=0; i<4; i++) ndiv[i]=(*fNDiv)[i];
+// Half distance between slat planes
+ fDz=1.76;
+// Slat height
+ fSlatY=40.;
+ for (i=0; i<10; i++) fSlatX[i]=0.;
+
+
+// Initialize array of slats
+ fSlats = new TObjArray(fNSlats);
+// Maximum number of strips (pads) in x and y
+ fNpy=0;
+ fNpx=0;
+// for each slat in the quadrant (+,+)
+ for (islat=0; islat<fNSlats; islat++) {
+ (*fSlats)[islat] = CreateSlatModule();
+
+ AliMUONSegmentationSlatModule *slat = Slat(islat);
+ // Configure Slat
+ slat->SetId(islat);
+
+// Foward pad size
+ slat->SetPadSize(fDpx, fDpy);
+// Forward wire pitch
+ slat->SetDAnod(fWireD);
+// Foward segmentation
+ slat->SetPadDivision(ndiv);
+ slat->SetPcbBoards(fPcb[islat]);
+// Initialize slat module
+ slat->Init(chamber);
+// y-position of slat module relative to the first (closest to the beam)
+ fYPosition[islat]=islat*(fSlatY-2.*fShift);
+ if (TMath::Odd(islat)) fYPosition[islat] -= 2*fShift;
+//
+ fNpy+=slat->Npy();
+ if (slat->Npx() > fNpx) fNpx=slat->Npx();
+ Int_t isec;
+ for (isec=0; isec< 4; isec++)
+ {
+ fSlatX[islat]+=40.*fPcb[islat][isec];
+ }
+
+ }
+// Set parent chamber number
+ AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
+ fChamber=&(pMUON->Chamber(chamber));
+}
+
+
+
+
+
+void AliMUONSegmentationSlat::SetNPCBperSector(Int_t *npcb)
+{
+ // PCB distribution for station 4 (6 rows with 1+3 segmentation regions)
+ for (Int_t islat=0; islat<fNSlats; islat++){
+ fPcb[islat][0] = *(npcb + 4 * islat);
+ fPcb[islat][1] = *(npcb + 4 * islat + 1);
+ fPcb[islat][2] = *(npcb + 4 * islat + 2);
+ fPcb[islat][3] = *(npcb + 4 * islat + 3);
+ }
+}
+
+
+void AliMUONSegmentationSlat::SetSlatXPositions(Float_t *xpos)
+{
+// Set x-positions of Slats
+ for (Int_t islat=0; islat<fNSlats; islat++) fXPosition[islat]=xpos[islat];
+}
+
+AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::Slat(Int_t index) const
+{ return ((AliMUONSegmentationSlatModule*) (*fSlats)[index]);}
+
+
+AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::
+CreateSlatModule()
+{
+ // Factory method for slat module
+ return new AliMUONSegmentationSlatModule();
+}
+
+
+
+
+
--- /dev/null
+#ifndef ALIMUONSEGMENTATIONSLAT_H
+#define ALIMUONSEGMENTATIONSLAT_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+/* $Id$ */
+
+/////////////////////////////////////////////////////
+// Segmentation classes for slat modules //
+// to be used with AluMUONSegmentationSlat //
+/////////////////////////////////////////////////////
+
+#include "AliSegmentation.h"
+
+class TArrayI;
+class TObjArray;
+class AliMUONSegmentationSlatModule;
+class AliMUONChamber;
+
+
+class AliMUONSegmentationSlat :
+public AliSegmentation {
+ public:
+ AliMUONSegmentationSlat();
+ virtual ~AliMUONSegmentationSlat(){}
+ //
+ // Set Chamber Segmentation Parameters
+ //
+ // Pad size Dx*Dy
+ virtual void SetPadSize(Float_t p1, Float_t p2);
+ // Anod Pitch
+ virtual void SetDAnod(Float_t D) {fWireD = D;};
+
+ // Anod wire coordinate closest to xhit
+ virtual Float_t GetAnod(Float_t xhit) const;
+
+ void SetPadDivision(Int_t ndiv[4]);
+
+ // Transform from pad to real coordinates
+ virtual void GetPadI(Float_t x, Float_t y , Float_t z, Int_t &ix, Int_t &iy);
+ // Transform from real to pad coordinates
+ virtual void GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z);
+ // Initialisation
+ virtual void Init(Int_t chamber);
+ //
+ // Get member data
+ //
+ //
+ // Pad size in x
+ virtual Float_t Dpx() const {return fDpx;}
+
+ // Pad size in y
+ virtual Float_t Dpy() const {return fDpy;}
+ // Pad size in x by Sector
+ virtual Float_t Dpx(Int_t isec) const;
+ // Pad size in y by Sector
+ virtual Float_t Dpy(Int_t isec) const;
+ // Maximum number of Pads in x
+ virtual Int_t Npx() const {return fNpx;}
+ // Maximum number of Pads in y
+ virtual Int_t Npy() const {return fNpy;}
+ //
+ virtual void SetPad(Int_t ix,Int_t iy);
+
+ virtual void SetHit(Float_t xhit, Float_t yhit, Float_t zhit);
+ //
+ // Iterate over pads
+ // Initialiser
+ virtual void FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy);
+ // Stepper
+ virtual void NextPad();
+ // Condition
+ virtual Int_t MorePads();
+ // Get next neighbours
+ virtual void Neighbours
+ (Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10]);
+ virtual Float_t Distance2AndOffset(Int_t iX, Int_t iY, Float_t X, Float_t Y, Int_t *dummy) {return 0.;}
+ virtual void GetNParallelAndOffset(Int_t iX, Int_t iY,
+ Int_t *Nparallel, Int_t *Offset) {*Nparallel=1;*Offset=0;}
+ //
+ // Current Pad during Integration
+ // x-coordinate
+ virtual Int_t Ix();
+ // y-coordinate
+ virtual Int_t Iy();
+ // current sector
+ virtual Int_t ISector();
+ // calculate sector from pad coordinates
+ virtual Int_t Sector(Int_t ix, Int_t iy);
+ //
+ // Signal Generation Condition during Stepping
+ virtual Int_t SigGenCond(Float_t x, Float_t y, Float_t z);
+ // Initialise signal generation at coord (x,y,z)
+ virtual void SigGenInit(Float_t x, Float_t y, Float_t z);
+
+ //
+ // Integration
+ // Current integration limits
+ virtual void IntegrationLimits
+ (Float_t& x1, Float_t& x2, Float_t& y1, Float_t& y2);
+ //
+ // Class specific methods
+ virtual void SetNSlats(Int_t nslats) {fNSlats = nslats;}
+ virtual void SetShift(Float_t shift) {fShift = shift;}
+ virtual void SetNPCBperSector(Int_t *npcb);
+ virtual void SetSlatXPositions(Float_t *xpos);
+ virtual AliMUONSegmentationSlatModule* Slat(Int_t index) const;
+
+// Not used
+ // Test points for auto calibration
+ virtual void GiveTestPoints(Int_t &n, Float_t *x, Float_t *y) const {;}
+ // Draw the segmentation zones
+ virtual void Draw(const char *opt = "") const {;}
+
+ // Function for systematic corrections
+ // Set the correction function
+ virtual void SetCorrFunc(Int_t, TF1*) {;}
+
+ // Get the correction Function
+ virtual TF1* CorrFunc(Int_t) const {return NULL;}
+ protected:
+
+ virtual void GlobalToLocal(
+ Float_t x, Float_t y, Float_t z, Int_t &islat, Float_t &xlocal, Float_t &ylocal);
+ virtual void GlobalToLocal(
+ Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal);
+
+ virtual void LocalToGlobal(
+ Int_t islat, Float_t xlocal, Float_t ylocal, Float_t &x, Float_t &y, Float_t &z);
+ virtual void LocalToGlobal(
+ Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy);
+ virtual void SetSymmetry(Int_t ix, Int_t iy);
+ virtual void SetSymmetry(Float_t x, Float_t y);
+ // Factory method for associated slat module class
+ virtual AliMUONSegmentationSlatModule* CreateSlatModule();
+
+ protected:
+
+ AliMUONChamber* fChamber; // Parent Chamber
+
+ //
+ // Geometry
+ //
+ Float_t fWireD; // Wire Pitch
+ Int_t fNSlats; // Number of slats
+ Int_t fPcb[10][4]; // PcbSegmentation
+ Float_t fXPosition[10]; // x-position of slats
+ Float_t fYPosition[10]; // y-position of slats
+ Float_t fSlatX[10]; // Slat x-dimension
+ Float_t fSlatY; // Slat y-dimension
+ Float_t fDpx; // Pad size x
+ Float_t fDpy; // Pad size y
+ Int_t fNpx; // maximum number of pads in x
+ Int_t fNpy; // maximum number of pads in y
+ Int_t fSym[2]; // signs for symmetry trafo
+ Float_t fShift; // Half overlap of pad planes
+ Float_t fDz; // Half distance between slat planes
+
+ TArrayI* fNDiv; // Pad size division
+ // Slats
+ TObjArray* fSlats; // Array of Slats
+ // Proxy data
+ AliMUONSegmentationSlatModule* fCurrentSlat; // Pointer to current slat
+ Int_t fSlatIndex; // Current slat index
+ ClassDef(AliMUONSegmentationSlat,1) // Segmentation for Muon Chamber built from Slat Modules
+};
+
+
+#endif
+
+
+
+
+
+
+
+
+
--- /dev/null
+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * *
+ * Author: The ALICE Off-line Project. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+/*
+$Log$
+*/
+
+#include "AliMUONSegmentationSlatN.h"
+#include "AliMUONSegmentationSlatModuleN.h"
+#include "TArrayI.h"
+#include "TArrayF.h"
+#include "TObjArray.h"
+#include <TMath.h>
+#include <iostream.h>
+
+//___________________________________________
+ClassImp(AliMUONSegmentationSlatN);
+
+
+
+AliMUONSegmentationSlatN::AliMUONSegmentationSlatN()
+{
+// Default constructor
+}
+
+
+Float_t AliMUONSegmentationSlatN::Dpx(Int_t isec) const
+{
+//
+// Returns y-pad size for given sector isec
+ return fDpx;
+}
+
+Float_t AliMUONSegmentationSlatN::Dpy(Int_t isec) const
+{
+//
+// Returns x-pad size for given sector isec
+// isec = 100*islat+iregion
+//
+ Int_t islat, iregion;
+ islat = isec/100;
+ iregion = isec%100;
+ return Slat(islat)->Dpy(iregion);
+}
+
+
+
+void AliMUONSegmentationSlatN::GlobalToLocal(
+ Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal)
+{
+//
+// Perform local to global transformation for pad coordinates
+//
+ Int_t iytemp = TMath::Abs(iy);
+ Int_t index = 0;
+
+ iylocal = iytemp;
+ ix=TMath::Abs(ix);
+
+//
+// Find slat number (index) and iylocal
+ for (Int_t i=0; i<fNSlats; i++) {
+ if (ix <= Slat(i)->Npx()) {
+ Int_t isec=Slat(i)->Sector(ix,1);
+ iytemp-=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
+ }
+ if (iytemp <= 0) break;
+ iylocal = iytemp;
+ index=i+1;
+ }
+ ixlocal=ix;
+ islat=index;
+// Done !
+}
+
+void AliMUONSegmentationSlatN::LocalToGlobal(
+ Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy)
+{
+// Local to global transformation for pad coordinates
+
+ Int_t i;
+ iy=iylocal;
+
+//
+// Find iy global by adding iy offset from slats below
+ for (i=0; i<islat; i++) {
+ if (ixlocal <= Slat(i)->Npx()) {
+ Int_t isec=Slat(i)->Sector(ixlocal,1);
+ iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
+ }
+ }
+//
+// Perform symmetry transformation
+ ix=ixlocal*fSym[0];
+ iy=iy*fSym[1];
+}
+
+
+void AliMUONSegmentationSlatN::
+GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
+{
+// Returns pad coordinates for given set of space coordinates
+
+ Int_t islat, i;
+ Float_t xlocal, ylocal;
+// Transform to local coordinates
+ AliMUONSegmentationSlat::GlobalToLocal(x,y,z,islat,xlocal,ylocal);
+ Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
+// add to local iy offfset from slats below
+ for (i=0; i<islat; i++) {
+ if (ix <= Slat(i)->Npx()) {
+ Int_t isec=Slat(i)->Sector(ix,1);
+ iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
+ }
+ }
+// Determine sign depending on quadrant
+ ix=ix*Int_t(TMath::Sign(1.,x));
+ iy=iy*Int_t(TMath::Sign(1.,y));
+
+}
+
+AliMUONSegmentationSlatModule* AliMUONSegmentationSlatN::
+CreateSlatModule()
+{
+ // Factory method for slat module
+ return new AliMUONSegmentationSlatModuleN();
+}
+
+
+
+
+
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff