[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 1.11  2001/11/28 16:34:01  morsch
In DC, fNDiv, fDpxD set to 0.

Revision 1.10  2001/05/16 14:57:17  alibrary
New files for folders and Stack

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 <Riostream.h>

#include "AliMUONSegmentationV01.h"

//___________________________________________
ClassImp(AliMUONSegmentationSlatModule)

AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule() 
{
// Default constructor
    fNDiv = 0;      
    fDpxD = 0;  
}

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	$Log$
70479d0e	18	Revision 1.11 2001/11/28 16:34:01 morsch
	19	In DC, fNDiv, fDpxD set to 0.
	20
81a0c7bd	21	Revision 1.10 2001/05/16 14:57:17 alibrary
	22	New files for folders and Stack
	23
9e1a0ddb	24	Revision 1.9 2001/01/26 21:25:48 morsch
	25	Empty default constructors and.
	26
e9e4cdf2	27	Revision 1.8 2001/01/17 20:53:40 hristov
	28	Destructors corrected to avoid memory leaks
	29
c2c0190f	30	Revision 1.7 2000/12/21 22:12:41 morsch
	31	Clean-up of coding rule violations,
	32
de05461e	33	Revision 1.6 2000/11/06 09:20:43 morsch
	34	AliMUON delegates part of BuildGeometry() to AliMUONSegmentation using the
	35	Draw() method. This avoids code and parameter replication.
	36
aaf4addd	37	Revision 1.5 2000/10/26 19:32:04 morsch
	38	Problem with iteration over y-pads for 2nd cathode corrected.
	39
d4ee3c3e	40	Revision 1.4 2000/10/25 19:56:55 morsch
	41	Handle correctly slats with less than 3 segmentation zones.
	42
f30dea32	43	Revision 1.3 2000/10/22 16:56:32 morsch
	44	- Store chamber number as slat id.
	45
de2f6d11	46	Revision 1.2 2000/10/18 11:42:06 morsch
	47	- AliMUONRawCluster contains z-position.
	48	- Some clean-up of useless print statements during initialisations.
	49
3e1872ed	50	Revision 1.1 2000/10/06 08:59:03 morsch
	51	Segmentation classes for bending and non bending plane slat modules (A. de Falco, A. Morsch)
	52
4c503756	53	*/
	54
	55	/////////////////////////////////////////////////////
	56	// Segmentation classes for slat modules //
	57	// to be used with AluMUONSegmentationSlat //
	58	/////////////////////////////////////////////////////
	59
	60
	61	#include "AliMUONSegmentationSlatModule.h"
aaf4addd	62	#include "AliRun.h"
aaf4addd	63	#include "AliMUON.h"
4c503756	64	#include <TMath.h>
70479d0e	65	#include <Riostream.h>
4c503756	66
	67	#include "AliMUONSegmentationV01.h"
	68
	69	//___________________________________________
	70	ClassImp(AliMUONSegmentationSlatModule)
	71
	72	AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule()
	73	{
	74	// Default constructor
81a0c7bd	75	fNDiv = 0;
81a0c7bd	76	fDpxD = 0;
e9e4cdf2	77	}
	78
	79	AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule(Int_t nsec)
	80	{
	81	// Non default constructor
	82	fNsec = nsec;
4c503756	83	fNDiv = new TArrayI(fNsec);
	84	fDpxD = new TArrayF(fNsec);
	85	(fNDiv)[0]=(fNDiv)[1]=(fNDiv)[2]=(fNDiv)[3]=0;
	86	(fDpxD)[0]=(fDpxD)[1]=(fDpxD)[2]=(fDpxD)[3]=0;
e9e4cdf2	87	}
	88
	89	AliMUONSegmentationSlatModule::~AliMUONSegmentationSlatModule()
	90	{
	91	// Destructor
	92	if (fNDiv) delete fNDiv;
	93	if (fDpxD) delete fDpxD;
4c503756	94	}
	95
	96	void AliMUONSegmentationSlatModule::SetPcbBoards(Int_t n[4])
	97	{
	98	//
	99	// Set Pcb Board segmentation zones
	100	for (Int_t i=0; i<4; i++) fPcbBoards[i]=n[i];
	101	}
	102
	103
	104	void AliMUONSegmentationSlatModule::SetPadDivision(Int_t ndiv[4])
	105	{
	106	//
	107	// Defines the pad size perp. to the anode wire (y) for different sectors.
	108	// Pad sizes are defined as integral fractions ndiv of a basis pad size
	109	// fDpx
	110	//
	111	for (Int_t i=0; i<4; i++) {
	112	(*fNDiv)[i]=ndiv[i];
	113	}
	114	ndiv[0]=ndiv[1];
	115	}
	116
	117	Float_t AliMUONSegmentationSlatModule::Dpx(Int_t isec) const
	118	{
	119	// Return x-strip width
	120	return (*fDpxD)[isec];
	121	}
	122
	123
	124	Float_t AliMUONSegmentationSlatModule::Dpy(Int_t isec) const
	125	{
	126	// Return y-strip width
	127
	128	return fDpy;
	129	}
	130
	131
	132	void AliMUONSegmentationSlatModule::
	133	GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy)
	134	{
	135	// Returns pad coordinates (ix,iy) for given real coordinates (x,y)
	136	//
	137	iy = Int_t(y/fDpy)+1;
	138	if (iy > fNpy) iy= fNpy;
	139	//
	140	// Find sector isec
	141
	142	Int_t isec=-1;
	143	for (Int_t i=fNsec-1; i > 0; i--) {
	144	if (x >= fCx[i-1]) {
	145	isec=i;
f30dea32	146	if (fCx[isec] == fCx[isec-1] && isec > 1) isec--;
4c503756	147	break;
	148	}
	149	}
	150
	151	if (isec>0) {
	152	ix= Int_t((x-fCx[isec-1])/(*fDpxD)[isec])
	153	+fNpxS[isec-1]+1;
	154	} else if (isec == 0) {
	155	ix= Int_t(x/(*fDpxD)[isec])+1;
	156	} else {
	157	ix=0;
	158	iy=0;
	159	}
	160	}
	161
	162	void AliMUONSegmentationSlatModule::
	163	GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y)
	164	{
	165	// Returns real coordinates (x,y) for given pad coordinates (ix,iy)
	166	//
	167	y = Float_t(iy*fDpy)-fDpy/2.;
	168	//
	169	// Find sector isec
	170	Int_t isec=AliMUONSegmentationSlatModule::Sector(ix,iy);
de2f6d11	171	if (isec == -1) printf("\n PadC %d %d %d %d \n ", isec, fId, ix, iy);
4c503756	172	//
	173	if (isec>0) {
	174	x = fCx[isec-1]+(ix-fNpxS[isec-1])(fDpxD)[isec];
	175	x = x-(*fDpxD)[isec]/2;
	176	} else {
	177	x=y=0;
	178	}
	179	}
	180
	181	void AliMUONSegmentationSlatModule::
	182	SetPad(Int_t ix, Int_t iy)
	183	{
	184	//
	185	// Sets virtual pad coordinates, needed for evaluating pad response
	186	// outside the tracking program
	187	GetPadC(ix,iy,fX,fY);
	188	fSector=Sector(ix,iy);
	189	}
	190
	191	void AliMUONSegmentationSlatModule::
	192	SetHit(Float_t x, Float_t y)
	193	{
de05461e	194	// Set current hit
de05461e	195	//
4c503756	196	fXhit = x;
	197	fYhit = y;
	198
	199	if (x < 0) fXhit = 0;
	200	if (y < 0) fYhit = 0;
	201
	202	if (x >= fCx[fNsec-1]) fXhit = fCx[fNsec-1];
	203	if (y >= fDyPCB) fYhit = fDyPCB;
	204
	205
	206	}
	207
	208
	209	void AliMUONSegmentationSlatModule::
	210	FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy)
	211	{
	212	// Initialises iteration over pads for charge distribution algorithm
	213	//
	214	//
	215	// Find the wire position (center of charge distribution)
	216	Float_t x0a=GetAnod(xhit);
	217	fXhit=x0a;
	218	fYhit=yhit;
	219	//
	220	// and take fNsigma*sigma around this center
	221	Float_t x01=x0a - dx;
	222	Float_t x02=x0a + dx;
	223	Float_t y01=yhit - dy;
	224	Float_t y02=yhit + dy;
4c503756	225	if (x01 < 0) x01 = 0;
4c503756	226	if (y01 < 0) y01 = 0;
f30dea32	227
f30dea32	228	if (x02 >= fCx[fNsec-1]) x02 = fCx[fNsec-1];
d4ee3c3e	229
4c503756	230
f30dea32	231
4c503756	232	Int_t isec=-1;
	233	for (Int_t i=fNsec-1; i > 0; i--) {
	234	if (x02 >= fCx[i-1]) {
	235	isec=i;
f30dea32	236	if (fCx[isec] == fCx[isec-1] && isec > 1) isec--;
4c503756	237	break;
	238	}
	239	}
d4ee3c3e	240	y02 += Dpy(isec);
d4ee3c3e	241	if (y02 >= fDyPCB) y02 = fDyPCB;
4c503756	242
4c503756	243	//
	244	// find the pads over which the charge distributes
	245	GetPadI(x01,y01,fIxmin,fIymin);
	246	GetPadI(x02,y02,fIxmax,fIymax);
f30dea32	247
4c503756	248	if (fIxmax > fNpx) fIxmax=fNpx;
4c503756	249	if (fIymax > fNpyS[isec]) fIymax = fNpyS[isec];
d4ee3c3e	250
4c503756	251	fXmin=x01;
d4ee3c3e	252	fXmax=x02;
4c503756	253	fYmin=y01;
d4ee3c3e	254	fYmax=y02;
d4ee3c3e	255
4c503756	256	//
	257	// Set current pad to lower left corner
	258	if (fIxmax < fIxmin) fIxmax=fIxmin;
	259	if (fIymax < fIymin) fIymax=fIymin;
	260	fIx=fIxmin;
	261	fIy=fIymin;
	262
	263	GetPadC(fIx,fIy,fX,fY);
	264	fSector=Sector(fIx,fIy);
d4ee3c3e	265	/*
	266	printf("\n \n First Pad: %d %d %f %f %d %d %d %f" ,
	267	fIxmin, fIxmax, fXmin, fXmax, fNpx, fId, isec, Dpy(isec));
	268	printf("\n \n First Pad: %d %d %f %f %d %d %d %f",
	269	fIymin, fIymax, fYmin, fYmax, fNpyS[isec], fId, isec, Dpy(isec));
	270	*/
4c503756	271	}
	272
	273	void AliMUONSegmentationSlatModule::NextPad()
	274	{
	275	// Stepper for the iteration over pads
	276	//
	277	// Step to next pad in the integration region
	278	// step from left to right
	279	if (fIx != fIxmax) {
	280	fIx++;
	281	GetPadC(fIx,fIy,fX,fY);
	282	fSector=Sector(fIx,fIy);
	283	// step up
	284	} else if (fIy != fIymax) {
	285	fIx=fIxmin;
	286	fIy++;
	287	GetPadC(fIx,fIy,fX,fY);
	288	fSector=Sector(fIx,fIy);
	289
	290	} else {
	291	fIx=-1;
	292	fIy=-1;
	293	}
	294	// printf("\n Next Pad %d %d %f %f %d %d %d %d %d ",
	295	}
	296
	297
	298	Int_t AliMUONSegmentationSlatModule::MorePads()
de05461e	299	{
4c503756	300	// Stopping condition for the iterator over pads
	301	//
	302	// Are there more pads in the integration region
4c503756	303
	304	return (fIx != -1 \|\| fIy != -1);
	305	}
	306
	307
	308	Int_t AliMUONSegmentationSlatModule::Sector(Int_t ix, Int_t iy)
	309	{
	310	//
	311	// Determine segmentation zone from pad coordinates
	312	//
	313	Int_t isec=-1;
	314	for (Int_t i=0; i < fNsec; i++) {
	315	if (ix <= fNpxS[i]) {
	316	isec=i;
	317	break;
	318	}
	319	}
	320	if (isec == -1) printf("\n Sector: Attention isec ! %d %d %d %d \n",
	321	fId, ix, iy,fNpxS[3]);
	322
	323	return isec;
	324
	325	}
	326
	327	void AliMUONSegmentationSlatModule::
	328	IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
	329	{
	330	// Returns integration limits for current pad
	331	//
	332
	333	x1=fXhit-fX-Dpx(fSector)/2.;
	334	x2=x1+Dpx(fSector);
	335	y1=fYhit-fY-Dpy(fSector)/2.;
	336	y2=y1+Dpy(fSector);
	337	// printf("\n Integration Limits %f %f %f %f %d %f", x1, x2, y1, y2, fSector, Dpx(fSector));
	338
	339	}
	340
	341	void AliMUONSegmentationSlatModule::
	342	Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
	343	{
	344	// Returns list of next neighbours for given Pad (iX, iY)
	345	//
	346	//
	347	Int_t i=0;
	348	//
	349	// step right
	350	if (iX+1 <= fNpx) {
	351	Xlist[i]=iX+1;
	352	Ylist[i++]=iY;
	353	}
	354	//
	355	// step left
	356	if (iX-1 > 0) {
	357	Xlist[i]=iX-1;
	358	Ylist[i++]=iY;
	359	}
	360
	361	//
	362	// step up
	363	if (iY+1 <= fNpy) {
	364	Xlist[i]=iX;
	365	Ylist[i++]=iY+1;
	366	}
367	//
368	// step down
369	if (iY-1 > 0) {
370	Xlist[i]=iX;
371	Ylist[i++]=iY-1;
372	}
373
374	*Nlist=i;
375	}
376
377
378	void AliMUONSegmentationSlatModule::Init(Int_t chamber)
379	{
4c503756	380	//
	381	// Fill the arrays fCx (x-contour) and fNpxS (ix-contour) for each sector
	382	// These arrays help in converting from real to pad co-ordinates and
	383	// vice versa
	384	//
	385	// Segmentation is defined by rectangular modules approximating
	386	// concentric circles as shown below
	387	//
	388	// PCB module size in cm
9e1a0ddb	389	// printf("\n Initialise Segmentation SlatModule \n");
de05461e	390
4c503756	391	fDxPCB=40;
	392	fDyPCB=40;
	393	//
	394	// number of pad rows per PCB
	395	//
	396	Int_t nPyPCB=Int_t(fDyPCB/fDpy);
	397	//
	398	// maximum number of pad rows
	399	fNpy=nPyPCB;
	400	//
	401	// Calculate padsize along x
	402	(*fDpxD)[fNsec-1]=fDpx;
	403	if (fNsec > 1) {
	404	for (Int_t i=fNsec-2; i>=0; i--){
	405	(fDpxD)[i]=(fDpxD)[fNsec-1]/(*fNDiv)[i];
4c503756	406	}
	407	}
	408	//
	409	// fill the arrays defining the pad segmentation boundaries
	410	//
	411	//
	412	// Loop over sectors (isec=0 is the dead space surounding the beam pipe)
	413	for (Int_t isec=0; isec<4; isec++) {
	414	if (isec==0) {
	415	fNpxS[0] = 0;
	416	fNpyS[0] = 0;
	417	fCx[0] = 0;
	418	} else {
	419	fNpxS[isec]=fNpxS[isec-1] + fPcbBoards[isec]Int_t(fDxPCB/(fDpxD)[isec]);
	420	fNpyS[isec]=fNpy;
	421	fCx[isec]=fCx[isec-1] + fPcbBoards[isec]*fDxPCB;
	422	}
	423	} // sectors
	424	// maximum number of pad rows
	425	fNpy=nPyPCB;
	426	fNpx=fNpxS[3];
de2f6d11	427	//
de2f6d11	428	fId = chamber;
4c503756	429	}
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