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