[u/mrichter/AliRoot.git] / MUON / AliMUONSegmentationSlatModule.cxx

/**************************************************************************
 * 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.                  *
 **************************************************************************/

/*
$Log$
Revision 1.9  2001/01/26 21:25:48  morsch
Empty default constructors and.

Revision 1.8  2001/01/17 20:53:40  hristov
Destructors corrected to avoid memory leaks

Revision 1.7  2000/12/21 22:12:41  morsch
Clean-up of coding rule violations,

Revision 1.6  2000/11/06 09:20:43  morsch
AliMUON delegates part of BuildGeometry() to AliMUONSegmentation using the
Draw() method. This avoids code and parameter replication.

Revision 1.5  2000/10/26 19:32:04  morsch
Problem with iteration over y-pads for 2nd cathode corrected.

Revision 1.4  2000/10/25 19:56:55  morsch
Handle correctly slats with less than 3 segmentation zones.

Revision 1.3  2000/10/22 16:56:32  morsch
- Store chamber number as slat id.

Revision 1.2  2000/10/18 11:42:06  morsch
- AliMUONRawCluster contains z-position.
- Some clean-up of useless print statements during initialisations.

Revision 1.1  2000/10/06 08:59:03  morsch
Segmentation classes for bending and non bending plane slat modules (A. de Falco, A. Morsch)

*/

/////////////////////////////////////////////////////
//  Segmentation classes for slat modules          //
//  to be used with AluMUONSegmentationSlat        //
/////////////////////////////////////////////////////


#include "AliMUONSegmentationSlatModule.h"
#include "AliRun.h"
#include "AliMUON.h"
#include <TMath.h>
#include <iostream.h>

#include "AliMUONSegmentationV01.h"

//___________________________________________
ClassImp(AliMUONSegmentationSlatModule)

AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule() 
{
// Default constructor
}

AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule(Int_t nsec) 
{
// Non default constructor
    fNsec = nsec;
    fNDiv = new TArrayI(fNsec);      
    fDpxD = new TArrayF(fNsec);      
    (*fNDiv)[0]=(*fNDiv)[1]=(*fNDiv)[2]=(*fNDiv)[3]=0;     
    (*fDpxD)[0]=(*fDpxD)[1]=(*fDpxD)[2]=(*fDpxD)[3]=0;     
}

AliMUONSegmentationSlatModule::~AliMUONSegmentationSlatModule() 
{
// Destructor
    if (fNDiv) delete fNDiv;
    if (fDpxD) delete fDpxD;
}

void AliMUONSegmentationSlatModule::SetPcbBoards(Int_t n[4])
{
//
// Set Pcb Board segmentation zones
    for (Int_t i=0; i<4; i++) fPcbBoards[i]=n[i];
}


void AliMUONSegmentationSlatModule::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];
    }
    ndiv[0]=ndiv[1];
}

Float_t AliMUONSegmentationSlatModule::Dpx(Int_t isec) const
{
// Return x-strip width
    return (*fDpxD)[isec];
} 


Float_t AliMUONSegmentationSlatModule::Dpy(Int_t isec) const
{
// Return y-strip width

    return fDpy;
}


void AliMUONSegmentationSlatModule::
GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy) 
{
//  Returns pad coordinates (ix,iy) for given real coordinates (x,y)
//
    iy = Int_t(y/fDpy)+1;
    if (iy >  fNpy) iy= fNpy;
//
//  Find sector isec
    
    Int_t isec=-1;
    for (Int_t i=fNsec-1; i > 0; i--) {
	if (x >= fCx[i-1]) {
	    isec=i;
	    if (fCx[isec] == fCx[isec-1]  && isec > 1) isec--;
	    break;
	}
    }

    if (isec>0) {
	ix= Int_t((x-fCx[isec-1])/(*fDpxD)[isec])
	    +fNpxS[isec-1]+1;
    } else if (isec == 0) {
	ix= Int_t(x/(*fDpxD)[isec])+1;
    } else {
	ix=0;
	iy=0;
    }
}

void AliMUONSegmentationSlatModule::
GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y) 
{
//  Returns real coordinates (x,y) for given pad coordinates (ix,iy)
//
    y = Float_t(iy*fDpy)-fDpy/2.;
//
//  Find sector isec
    Int_t isec=AliMUONSegmentationSlatModule::Sector(ix,iy);
    if (isec == -1) printf("\n PadC %d %d %d  %d \n ", isec, fId, ix, iy);
//
    if (isec>0) {
	x = fCx[isec-1]+(ix-fNpxS[isec-1])*(*fDpxD)[isec];
	x = x-(*fDpxD)[isec]/2;
    } else {
	x=y=0;
    }
}

void AliMUONSegmentationSlatModule::
SetPad(Int_t ix, Int_t iy)
{
    //
    // Sets virtual pad coordinates, needed for evaluating pad response 
    // outside the tracking program 
    GetPadC(ix,iy,fX,fY);
    fSector=Sector(ix,iy);
}

void AliMUONSegmentationSlatModule::
SetHit(Float_t x, Float_t y)
{
// Set current hit 
//
    fXhit = x;
    fYhit = y;
    
    if (x < 0) fXhit = 0;
    if (y < 0) fYhit = 0;
    
    if (x >= fCx[fNsec-1]) fXhit = fCx[fNsec-1];
    if (y >= fDyPCB)       fYhit = fDyPCB;

    
}


void AliMUONSegmentationSlatModule::
FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy)
{
// Initialises iteration over pads for charge distribution algorithm
//
    //
    // Find the wire position (center of charge distribution)
    Float_t x0a=GetAnod(xhit);
    fXhit=x0a;
    fYhit=yhit;
    //
    // and take fNsigma*sigma around this center
    Float_t x01=x0a  - dx;
    Float_t x02=x0a  + dx;
    Float_t y01=yhit - dy;
    Float_t y02=yhit + dy;
    if (x01 < 0) x01 = 0;
    if (y01 < 0) y01 = 0;

    if (x02 >= fCx[fNsec-1]) x02 = fCx[fNsec-1];

    
    Int_t isec=-1;
    for (Int_t i=fNsec-1; i > 0; i--) {
	if (x02 >= fCx[i-1]) {
	    isec=i;
	    if (fCx[isec] == fCx[isec-1] && isec > 1) isec--;
	    break;
	}
    }
    y02 += Dpy(isec);
    if (y02 >= fDyPCB) y02 = fDyPCB;
   
    //
    // find the pads over which the charge distributes
    GetPadI(x01,y01,fIxmin,fIymin);
    GetPadI(x02,y02,fIxmax,fIymax);
    
    if (fIxmax > fNpx) fIxmax=fNpx;
    if (fIymax > fNpyS[isec]) fIymax = fNpyS[isec];    

    fXmin=x01;
    fXmax=x02;    
    fYmin=y01;
    fYmax=y02;    
  
    // 
    // Set current pad to lower left corner
    if (fIxmax < fIxmin) fIxmax=fIxmin;
    if (fIymax < fIymin) fIymax=fIymin;    
    fIx=fIxmin;
    fIy=fIymin;
    
    GetPadC(fIx,fIy,fX,fY);
    fSector=Sector(fIx,fIy);
/*
    printf("\n \n First Pad: %d %d %f %f %d %d %d %f" , 
	   fIxmin, fIxmax, fXmin, fXmax, fNpx, fId, isec, Dpy(isec));    
    printf("\n \n First Pad: %d %d %f %f %d %d %d %f",
	   fIymin, fIymax, fYmin, fYmax,  fNpyS[isec], fId, isec, Dpy(isec));
*/
}

void AliMUONSegmentationSlatModule::NextPad()
{
// Stepper for the iteration over pads
//
// Step to next pad in the integration region
//  step from left to right    
    if (fIx != fIxmax) {
	fIx++;
	GetPadC(fIx,fIy,fX,fY);
	fSector=Sector(fIx,fIy);
//  step up 
    } else if (fIy != fIymax) {
	fIx=fIxmin;
	fIy++;
	GetPadC(fIx,fIy,fX,fY);
	fSector=Sector(fIx,fIy);

    } else {
	fIx=-1;
	fIy=-1;
    }
//    printf("\n Next Pad %d %d %f %f %d %d %d %d %d ", 
}


Int_t AliMUONSegmentationSlatModule::MorePads()
{
// Stopping condition for the iterator over pads
//
// Are there more pads in the integration region
    
    return  (fIx != -1  || fIy != -1);
}


Int_t AliMUONSegmentationSlatModule::Sector(Int_t ix, Int_t iy) 
{
//
// Determine segmentation zone from pad coordinates
//
    Int_t isec=-1;
    for (Int_t i=0; i < fNsec; i++) {
	if (ix <= fNpxS[i]) {
	    isec=i;
	    break;
	}
    }
    if (isec == -1) printf("\n Sector: Attention isec ! %d %d %d %d \n",
			   fId, ix, iy,fNpxS[3]);

    return isec;

}

void AliMUONSegmentationSlatModule::
IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2) 
{
//  Returns integration limits for current pad
//

    x1=fXhit-fX-Dpx(fSector)/2.;
    x2=x1+Dpx(fSector);
    y1=fYhit-fY-Dpy(fSector)/2.;
    y2=y1+Dpy(fSector);    
//    printf("\n Integration Limits %f %f %f %f %d %f", x1, x2, y1, y2, fSector, Dpx(fSector));

}

void AliMUONSegmentationSlatModule::
Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10]) 
{
// Returns list of next neighbours for given Pad (iX, iY)
//
//
    Int_t i=0;
//    
//  step right
    if (iX+1 <= fNpx) {
	Xlist[i]=iX+1;
	Ylist[i++]=iY;
    }
//
//  step left    
    if (iX-1 > 0) {
	Xlist[i]=iX-1;
	Ylist[i++]=iY;
    }

//    
//  step up
    if (iY+1 <= fNpy) {
	Xlist[i]=iX;
	Ylist[i++]=iY+1;
    }
//
//  step down    
    if (iY-1 > 0) {
	Xlist[i]=iX;
	Ylist[i++]=iY-1;
    }

    *Nlist=i;
}


void AliMUONSegmentationSlatModule::Init(Int_t chamber)
{
//
//  Fill the arrays fCx (x-contour) and fNpxS (ix-contour) for each sector
//  These arrays help in converting from real to pad co-ordinates and
//  vice versa
//   
//  Segmentation is defined by rectangular modules approximating
//  concentric circles as shown below
//
//  PCB module size in cm
  // printf("\n Initialise Segmentation SlatModule \n");

    fDxPCB=40;
    fDyPCB=40;
//
// number of pad rows per PCB
//    
    Int_t nPyPCB=Int_t(fDyPCB/fDpy);
//
// maximum number of pad rows    
    fNpy=nPyPCB;
//
//  Calculate padsize along x
    (*fDpxD)[fNsec-1]=fDpx;
    if (fNsec > 1) {
	for (Int_t i=fNsec-2; i>=0; i--){
	    (*fDpxD)[i]=(*fDpxD)[fNsec-1]/(*fNDiv)[i];
	}
    }
//
// fill the arrays defining the pad segmentation boundaries
//
//  
//  Loop over sectors (isec=0 is the dead space surounding the beam pipe)
    for (Int_t isec=0; isec<4; isec++) {
	if (isec==0) {
	    fNpxS[0] = 0;
	    fNpyS[0] = 0;
	    fCx[0]   = 0;
	} else {
	    fNpxS[isec]=fNpxS[isec-1] + fPcbBoards[isec]*Int_t(fDxPCB/(*fDpxD)[isec]);
	    fNpyS[isec]=fNpy;
	    fCx[isec]=fCx[isec-1] + fPcbBoards[isec]*fDxPCB;
	}
    } // sectors
// maximum number of pad rows    
    fNpy=nPyPCB;
    fNpx=fNpxS[3];
//
    fId = chamber;
}
Commit	Line	Data
4c503756	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/*
	17	$Log$
9e1a0ddb	18	Revision 1.9 2001/01/26 21:25:48 morsch
	19	Empty default constructors and.
	20
e9e4cdf2	21	Revision 1.8 2001/01/17 20:53:40 hristov
	22	Destructors corrected to avoid memory leaks
	23
c2c0190f	24	Revision 1.7 2000/12/21 22:12:41 morsch
	25	Clean-up of coding rule violations,
	26
de05461e	27	Revision 1.6 2000/11/06 09:20:43 morsch
	28	AliMUON delegates part of BuildGeometry() to AliMUONSegmentation using the
	29	Draw() method. This avoids code and parameter replication.
	30
aaf4addd	31	Revision 1.5 2000/10/26 19:32:04 morsch
	32	Problem with iteration over y-pads for 2nd cathode corrected.
	33
d4ee3c3e	34	Revision 1.4 2000/10/25 19:56:55 morsch
	35	Handle correctly slats with less than 3 segmentation zones.
	36
f30dea32	37	Revision 1.3 2000/10/22 16:56:32 morsch
	38	- Store chamber number as slat id.
	39
de2f6d11	40	Revision 1.2 2000/10/18 11:42:06 morsch
	41	- AliMUONRawCluster contains z-position.
	42	- Some clean-up of useless print statements during initialisations.
	43
3e1872ed	44	Revision 1.1 2000/10/06 08:59:03 morsch
	45	Segmentation classes for bending and non bending plane slat modules (A. de Falco, A. Morsch)
	46
4c503756	47	*/
	48
	49	/////////////////////////////////////////////////////
	50	// Segmentation classes for slat modules //
	51	// to be used with AluMUONSegmentationSlat //
	52	/////////////////////////////////////////////////////
	53
	54
	55	#include "AliMUONSegmentationSlatModule.h"
aaf4addd	56	#include "AliRun.h"
aaf4addd	57	#include "AliMUON.h"
4c503756	58	#include <TMath.h>
	59	#include <iostream.h>
	60
	61	#include "AliMUONSegmentationV01.h"
	62
	63	//___________________________________________
	64	ClassImp(AliMUONSegmentationSlatModule)
	65
	66	AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule()
	67	{
	68	// Default constructor
e9e4cdf2	69	}
	70
	71	AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule(Int_t nsec)
	72	{
	73	// Non default constructor
	74	fNsec = nsec;
4c503756	75	fNDiv = new TArrayI(fNsec);
	76	fDpxD = new TArrayF(fNsec);
	77	(fNDiv)[0]=(fNDiv)[1]=(fNDiv)[2]=(fNDiv)[3]=0;
	78	(fDpxD)[0]=(fDpxD)[1]=(fDpxD)[2]=(fDpxD)[3]=0;
e9e4cdf2	79	}
	80
	81	AliMUONSegmentationSlatModule::~AliMUONSegmentationSlatModule()
	82	{
	83	// Destructor
	84	if (fNDiv) delete fNDiv;
	85	if (fDpxD) delete fDpxD;
4c503756	86	}
	87
	88	void AliMUONSegmentationSlatModule::SetPcbBoards(Int_t n[4])
	89	{
	90	//
	91	// Set Pcb Board segmentation zones
	92	for (Int_t i=0; i<4; i++) fPcbBoards[i]=n[i];
	93	}
	94
	95
	96	void AliMUONSegmentationSlatModule::SetPadDivision(Int_t ndiv[4])
	97	{
	98	//
	99	// Defines the pad size perp. to the anode wire (y) for different sectors.
	100	// Pad sizes are defined as integral fractions ndiv of a basis pad size
	101	// fDpx
	102	//
	103	for (Int_t i=0; i<4; i++) {
	104	(*fNDiv)[i]=ndiv[i];
	105	}
	106	ndiv[0]=ndiv[1];
	107	}
	108
	109	Float_t AliMUONSegmentationSlatModule::Dpx(Int_t isec) const
	110	{
	111	// Return x-strip width
	112	return (*fDpxD)[isec];
	113	}
	114
	115
	116	Float_t AliMUONSegmentationSlatModule::Dpy(Int_t isec) const
	117	{
	118	// Return y-strip width
	119
	120	return fDpy;
	121	}
	122
	123
	124	void AliMUONSegmentationSlatModule::
	125	GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy)
	126	{
	127	// Returns pad coordinates (ix,iy) for given real coordinates (x,y)
	128	//
	129	iy = Int_t(y/fDpy)+1;
	130	if (iy > fNpy) iy= fNpy;
	131	//
	132	// Find sector isec
	133
	134	Int_t isec=-1;
	135	for (Int_t i=fNsec-1; i > 0; i--) {
	136	if (x >= fCx[i-1]) {
	137	isec=i;
f30dea32	138	if (fCx[isec] == fCx[isec-1] && isec > 1) isec--;
4c503756	139	break;
	140	}
	141	}
	142
	143	if (isec>0) {
	144	ix= Int_t((x-fCx[isec-1])/(*fDpxD)[isec])
	145	+fNpxS[isec-1]+1;
	146	} else if (isec == 0) {
	147	ix= Int_t(x/(*fDpxD)[isec])+1;
	148	} else {
	149	ix=0;
	150	iy=0;
	151	}
	152	}
	153
	154	void AliMUONSegmentationSlatModule::
	155	GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y)
	156	{
	157	// Returns real coordinates (x,y) for given pad coordinates (ix,iy)
	158	//
	159	y = Float_t(iy*fDpy)-fDpy/2.;
	160	//
	161	// Find sector isec
	162	Int_t isec=AliMUONSegmentationSlatModule::Sector(ix,iy);
de2f6d11	163	if (isec == -1) printf("\n PadC %d %d %d %d \n ", isec, fId, ix, iy);
4c503756	164	//
	165	if (isec>0) {
	166	x = fCx[isec-1]+(ix-fNpxS[isec-1])(fDpxD)[isec];
	167	x = x-(*fDpxD)[isec]/2;
	168	} else {
	169	x=y=0;
	170	}
	171	}
	172
	173	void AliMUONSegmentationSlatModule::
	174	SetPad(Int_t ix, Int_t iy)
	175	{
	176	//
	177	// Sets virtual pad coordinates, needed for evaluating pad response
	178	// outside the tracking program
	179	GetPadC(ix,iy,fX,fY);
	180	fSector=Sector(ix,iy);
	181	}
	182
	183	void AliMUONSegmentationSlatModule::
	184	SetHit(Float_t x, Float_t y)
	185	{
de05461e	186	// Set current hit
de05461e	187	//
4c503756	188	fXhit = x;
	189	fYhit = y;
	190
	191	if (x < 0) fXhit = 0;
	192	if (y < 0) fYhit = 0;
	193
	194	if (x >= fCx[fNsec-1]) fXhit = fCx[fNsec-1];
	195	if (y >= fDyPCB) fYhit = fDyPCB;
	196
	197
	198	}
	199
	200
	201	void AliMUONSegmentationSlatModule::
	202	FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy)
	203	{
	204	// Initialises iteration over pads for charge distribution algorithm
	205	//
	206	//
	207	// Find the wire position (center of charge distribution)
	208	Float_t x0a=GetAnod(xhit);
	209	fXhit=x0a;
	210	fYhit=yhit;
	211	//
	212	// and take fNsigma*sigma around this center
	213	Float_t x01=x0a - dx;
	214	Float_t x02=x0a + dx;
	215	Float_t y01=yhit - dy;
	216	Float_t y02=yhit + dy;
4c503756	217	if (x01 < 0) x01 = 0;
4c503756	218	if (y01 < 0) y01 = 0;
f30dea32	219
f30dea32	220	if (x02 >= fCx[fNsec-1]) x02 = fCx[fNsec-1];
d4ee3c3e	221
4c503756	222
f30dea32	223
4c503756	224	Int_t isec=-1;
	225	for (Int_t i=fNsec-1; i > 0; i--) {
	226	if (x02 >= fCx[i-1]) {
	227	isec=i;
f30dea32	228	if (fCx[isec] == fCx[isec-1] && isec > 1) isec--;
4c503756	229	break;
	230	}
	231	}
d4ee3c3e	232	y02 += Dpy(isec);
d4ee3c3e	233	if (y02 >= fDyPCB) y02 = fDyPCB;
4c503756	234
4c503756	235	//
	236	// find the pads over which the charge distributes
	237	GetPadI(x01,y01,fIxmin,fIymin);
	238	GetPadI(x02,y02,fIxmax,fIymax);
f30dea32	239
4c503756	240	if (fIxmax > fNpx) fIxmax=fNpx;
4c503756	241	if (fIymax > fNpyS[isec]) fIymax = fNpyS[isec];
d4ee3c3e	242
4c503756	243	fXmin=x01;
d4ee3c3e	244	fXmax=x02;
4c503756	245	fYmin=y01;
d4ee3c3e	246	fYmax=y02;
d4ee3c3e	247
4c503756	248	//
	249	// Set current pad to lower left corner
	250	if (fIxmax < fIxmin) fIxmax=fIxmin;
	251	if (fIymax < fIymin) fIymax=fIymin;
	252	fIx=fIxmin;
	253	fIy=fIymin;
	254
	255	GetPadC(fIx,fIy,fX,fY);
	256	fSector=Sector(fIx,fIy);
d4ee3c3e	257	/*
	258	printf("\n \n First Pad: %d %d %f %f %d %d %d %f" ,
	259	fIxmin, fIxmax, fXmin, fXmax, fNpx, fId, isec, Dpy(isec));
	260	printf("\n \n First Pad: %d %d %f %f %d %d %d %f",
	261	fIymin, fIymax, fYmin, fYmax, fNpyS[isec], fId, isec, Dpy(isec));
	262	*/
4c503756	263	}
	264
	265	void AliMUONSegmentationSlatModule::NextPad()
	266	{
	267	// Stepper for the iteration over pads
	268	//
	269	// Step to next pad in the integration region
	270	// step from left to right
	271	if (fIx != fIxmax) {
	272	fIx++;
	273	GetPadC(fIx,fIy,fX,fY);
	274	fSector=Sector(fIx,fIy);
	275	// step up
	276	} else if (fIy != fIymax) {
	277	fIx=fIxmin;
	278	fIy++;
	279	GetPadC(fIx,fIy,fX,fY);
	280	fSector=Sector(fIx,fIy);
	281
	282	} else {
	283	fIx=-1;
	284	fIy=-1;
	285	}
	286	// printf("\n Next Pad %d %d %f %f %d %d %d %d %d ",
	287	}
	288
	289
	290	Int_t AliMUONSegmentationSlatModule::MorePads()
de05461e	291	{
4c503756	292	// Stopping condition for the iterator over pads
	293	//
	294	// Are there more pads in the integration region
4c503756	295
	296	return (fIx != -1 \|\| fIy != -1);
	297	}
	298
	299
	300	Int_t AliMUONSegmentationSlatModule::Sector(Int_t ix, Int_t iy)
	301	{
	302	//
	303	// Determine segmentation zone from pad coordinates
	304	//
	305	Int_t isec=-1;
	306	for (Int_t i=0; i < fNsec; i++) {
	307	if (ix <= fNpxS[i]) {
	308	isec=i;
	309	break;
	310	}
	311	}
	312	if (isec == -1) printf("\n Sector: Attention isec ! %d %d %d %d \n",
	313	fId, ix, iy,fNpxS[3]);
	314
	315	return isec;
	316
	317	}
	318
	319	void AliMUONSegmentationSlatModule::
	320	IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
	321	{
	322	// Returns integration limits for current pad
	323	//
	324
	325	x1=fXhit-fX-Dpx(fSector)/2.;
	326	x2=x1+Dpx(fSector);
	327	y1=fYhit-fY-Dpy(fSector)/2.;
	328	y2=y1+Dpy(fSector);
	329	// printf("\n Integration Limits %f %f %f %f %d %f", x1, x2, y1, y2, fSector, Dpx(fSector));
	330
	331	}
	332
	333	void AliMUONSegmentationSlatModule::
	334	Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
	335	{
	336	// Returns list of next neighbours for given Pad (iX, iY)
	337	//
	338	//
	339	Int_t i=0;
	340	//
	341	// step right
	342	if (iX+1 <= fNpx) {
	343	Xlist[i]=iX+1;
	344	Ylist[i++]=iY;
	345	}
	346	//
	347	// step left
	348	if (iX-1 > 0) {
	349	Xlist[i]=iX-1;
	350	Ylist[i++]=iY;
	351	}
	352
	353	//
	354	// step up
	355	if (iY+1 <= fNpy) {
	356	Xlist[i]=iX;
	357	Ylist[i++]=iY+1;
	358	}
359	//
360	// step down
361	if (iY-1 > 0) {
362	Xlist[i]=iX;
363	Ylist[i++]=iY-1;
364	}
365
366	*Nlist=i;
367	}
368
369
370	void AliMUONSegmentationSlatModule::Init(Int_t chamber)
371	{
4c503756	372	//
	373	// Fill the arrays fCx (x-contour) and fNpxS (ix-contour) for each sector
	374	// These arrays help in converting from real to pad co-ordinates and
	375	// vice versa
	376	//
	377	// Segmentation is defined by rectangular modules approximating
	378	// concentric circles as shown below
	379	//
	380	// PCB module size in cm
9e1a0ddb	381	// printf("\n Initialise Segmentation SlatModule \n");
de05461e	382
4c503756	383	fDxPCB=40;
	384	fDyPCB=40;
	385	//
	386	// number of pad rows per PCB
	387	//
	388	Int_t nPyPCB=Int_t(fDyPCB/fDpy);
	389	//
	390	// maximum number of pad rows
	391	fNpy=nPyPCB;
	392	//
	393	// Calculate padsize along x
	394	(*fDpxD)[fNsec-1]=fDpx;
	395	if (fNsec > 1) {
	396	for (Int_t i=fNsec-2; i>=0; i--){
	397	(fDpxD)[i]=(fDpxD)[fNsec-1]/(*fNDiv)[i];
4c503756	398	}
	399	}
	400	//
	401	// fill the arrays defining the pad segmentation boundaries
	402	//
	403	//
	404	// Loop over sectors (isec=0 is the dead space surounding the beam pipe)
	405	for (Int_t isec=0; isec<4; isec++) {
	406	if (isec==0) {
	407	fNpxS[0] = 0;
	408	fNpyS[0] = 0;
	409	fCx[0] = 0;
	410	} else {
	411	fNpxS[isec]=fNpxS[isec-1] + fPcbBoards[isec]Int_t(fDxPCB/(fDpxD)[isec]);
	412	fNpyS[isec]=fNpy;
	413	fCx[isec]=fCx[isec-1] + fPcbBoards[isec]*fDxPCB;
	414	}
	415	} // sectors
	416	// maximum number of pad rows
	417	fNpy=nPyPCB;
	418	fNpx=fNpxS[3];
de2f6d11	419	//
de2f6d11	420	fId = chamber;
4c503756	421	}
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