[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.                  *
 **************************************************************************/

/* $Id$ */

/////////////////////////////////////////////////////
//  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::GetPadI(Float_t x, Float_t y , Float_t /*z*/, Int_t &ix, Int_t &iy)
{
  GetPadI(x, y, ix, iy);
}
//-------------------------------------------------------------------------
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::SetHit(Float_t xhit, Float_t yhit, Float_t /*zhit*/)
{
  SetHit(xhit, yhit);
}
//----------------------------------------------------------
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::FirstPad(Float_t xhit, Float_t yhit, Float_t /*zhit*/, Float_t dx, Float_t dy)
{
  FirstPad(xhit, yhit, dx, dy);
}
//----------------------------------------------------------------------
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
88cb7938	16	/* $Id$ */
4c503756	17
	18	/////////////////////////////////////////////////////
	19	// Segmentation classes for slat modules //
	20	// to be used with AluMUONSegmentationSlat //
	21	/////////////////////////////////////////////////////
	22
	23
	24	#include "AliMUONSegmentationSlatModule.h"
aaf4addd	25	#include "AliRun.h"
aaf4addd	26	#include "AliMUON.h"
4c503756	27	#include <TMath.h>
70479d0e	28	#include <Riostream.h>
4c503756	29
	30	#include "AliMUONSegmentationV01.h"
	31
	32	//___________________________________________
	33	ClassImp(AliMUONSegmentationSlatModule)
	34
	35	AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule()
	36	{
	37	// Default constructor
81a0c7bd	38	fNDiv = 0;
81a0c7bd	39	fDpxD = 0;
e9e4cdf2	40	}
	41
	42	AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule(Int_t nsec)
	43	{
	44	// Non default constructor
	45	fNsec = nsec;
4c503756	46	fNDiv = new TArrayI(fNsec);
	47	fDpxD = new TArrayF(fNsec);
	48	(fNDiv)[0]=(fNDiv)[1]=(fNDiv)[2]=(fNDiv)[3]=0;
	49	(fDpxD)[0]=(fDpxD)[1]=(fDpxD)[2]=(fDpxD)[3]=0;
e9e4cdf2	50	}
	51
	52	AliMUONSegmentationSlatModule::~AliMUONSegmentationSlatModule()
	53	{
	54	// Destructor
	55	if (fNDiv) delete fNDiv;
	56	if (fDpxD) delete fDpxD;
4c503756	57	}
	58
	59	void AliMUONSegmentationSlatModule::SetPcbBoards(Int_t n[4])
	60	{
	61	//
	62	// Set Pcb Board segmentation zones
	63	for (Int_t i=0; i<4; i++) fPcbBoards[i]=n[i];
	64	}
	65
	66
	67	void AliMUONSegmentationSlatModule::SetPadDivision(Int_t ndiv[4])
	68	{
	69	//
	70	// Defines the pad size perp. to the anode wire (y) for different sectors.
	71	// Pad sizes are defined as integral fractions ndiv of a basis pad size
	72	// fDpx
	73	//
	74	for (Int_t i=0; i<4; i++) {
	75	(*fNDiv)[i]=ndiv[i];
	76	}
	77	ndiv[0]=ndiv[1];
	78	}
	79
	80	Float_t AliMUONSegmentationSlatModule::Dpx(Int_t isec) const
	81	{
	82	// Return x-strip width
	83	return (*fDpxD)[isec];
	84	}
	85
	86
d9a3473d	87	Float_t AliMUONSegmentationSlatModule::Dpy(Int_t /isec/) const
4c503756	88	{
	89	// Return y-strip width
	90
	91	return fDpy;
	92	}
	93
	94
	95	void AliMUONSegmentationSlatModule::
	96	GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy)
	97	{
	98	// Returns pad coordinates (ix,iy) for given real coordinates (x,y)
	99	//
	100	iy = Int_t(y/fDpy)+1;
	101	if (iy > fNpy) iy= fNpy;
	102	//
	103	// Find sector isec
	104
	105	Int_t isec=-1;
	106	for (Int_t i=fNsec-1; i > 0; i--) {
	107	if (x >= fCx[i-1]) {
	108	isec=i;
f30dea32	109	if (fCx[isec] == fCx[isec-1] && isec > 1) isec--;
4c503756	110	break;
	111	}
	112	}
	113
	114	if (isec>0) {
	115	ix= Int_t((x-fCx[isec-1])/(*fDpxD)[isec])
	116	+fNpxS[isec-1]+1;
	117	} else if (isec == 0) {
	118	ix= Int_t(x/(*fDpxD)[isec])+1;
	119	} else {
	120	ix=0;
	121	iy=0;
	122	}
	123	}
	124
	125	void AliMUONSegmentationSlatModule::
	126	GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y)
	127	{
	128	// Returns real coordinates (x,y) for given pad coordinates (ix,iy)
	129	//
	130	y = Float_t(iy*fDpy)-fDpy/2.;
	131	//
	132	// Find sector isec
	133	Int_t isec=AliMUONSegmentationSlatModule::Sector(ix,iy);
de2f6d11	134	if (isec == -1) printf("\n PadC %d %d %d %d \n ", isec, fId, ix, iy);
4c503756	135	//
	136	if (isec>0) {
	137	x = fCx[isec-1]+(ix-fNpxS[isec-1])(fDpxD)[isec];
	138	x = x-(*fDpxD)[isec]/2;
	139	} else {
	140	x=y=0;
	141	}
	142	}
d9a3473d	143	//-------------------------------------------------------------------------
	144	void AliMUONSegmentationSlatModule::GetPadI(Float_t x, Float_t y , Float_t /z/, Int_t &ix, Int_t &iy)
	145	{
	146	GetPadI(x, y, ix, iy);
	147	}
	148	//-------------------------------------------------------------------------
4c503756	149	void AliMUONSegmentationSlatModule::
	150	SetPad(Int_t ix, Int_t iy)
	151	{
	152	//
	153	// Sets virtual pad coordinates, needed for evaluating pad response
	154	// outside the tracking program
	155	GetPadC(ix,iy,fX,fY);
	156	fSector=Sector(ix,iy);
	157	}
	158
	159	void AliMUONSegmentationSlatModule::
	160	SetHit(Float_t x, Float_t y)
	161	{
de05461e	162	// Set current hit
de05461e	163	//
4c503756	164	fXhit = x;
	165	fYhit = y;
	166
	167	if (x < 0) fXhit = 0;
	168	if (y < 0) fYhit = 0;
	169
	170	if (x >= fCx[fNsec-1]) fXhit = fCx[fNsec-1];
	171	if (y >= fDyPCB) fYhit = fDyPCB;
	172
	173
	174	}
d9a3473d	175	//----------------------------------------------------------
	176	void AliMUONSegmentationSlatModule::SetHit(Float_t xhit, Float_t yhit, Float_t /zhit/)
	177	{
	178	SetHit(xhit, yhit);
	179	}
	180	//----------------------------------------------------------
4c503756	181	void AliMUONSegmentationSlatModule::
	182	FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy)
	183	{
	184	// Initialises iteration over pads for charge distribution algorithm
	185	//
	186	//
	187	// Find the wire position (center of charge distribution)
	188	Float_t x0a=GetAnod(xhit);
	189	fXhit=x0a;
	190	fYhit=yhit;
	191	//
	192	// and take fNsigma*sigma around this center
	193	Float_t x01=x0a - dx;
	194	Float_t x02=x0a + dx;
	195	Float_t y01=yhit - dy;
	196	Float_t y02=yhit + dy;
4c503756	197	if (x01 < 0) x01 = 0;
4c503756	198	if (y01 < 0) y01 = 0;
f30dea32	199
f30dea32	200	if (x02 >= fCx[fNsec-1]) x02 = fCx[fNsec-1];
d4ee3c3e	201
4c503756	202
f30dea32	203
4c503756	204	Int_t isec=-1;
	205	for (Int_t i=fNsec-1; i > 0; i--) {
	206	if (x02 >= fCx[i-1]) {
	207	isec=i;
f30dea32	208	if (fCx[isec] == fCx[isec-1] && isec > 1) isec--;
4c503756	209	break;
	210	}
	211	}
d4ee3c3e	212	y02 += Dpy(isec);
d4ee3c3e	213	if (y02 >= fDyPCB) y02 = fDyPCB;
4c503756	214
4c503756	215	//
	216	// find the pads over which the charge distributes
	217	GetPadI(x01,y01,fIxmin,fIymin);
	218	GetPadI(x02,y02,fIxmax,fIymax);
f30dea32	219
4c503756	220	if (fIxmax > fNpx) fIxmax=fNpx;
4c503756	221	if (fIymax > fNpyS[isec]) fIymax = fNpyS[isec];
d4ee3c3e	222
4c503756	223	fXmin=x01;
d4ee3c3e	224	fXmax=x02;
4c503756	225	fYmin=y01;
d4ee3c3e	226	fYmax=y02;
d4ee3c3e	227
4c503756	228	//
	229	// Set current pad to lower left corner
	230	if (fIxmax < fIxmin) fIxmax=fIxmin;
	231	if (fIymax < fIymin) fIymax=fIymin;
	232	fIx=fIxmin;
	233	fIy=fIymin;
	234
	235	GetPadC(fIx,fIy,fX,fY);
	236	fSector=Sector(fIx,fIy);
d4ee3c3e	237	/*
	238	printf("\n \n First Pad: %d %d %f %f %d %d %d %f" ,
	239	fIxmin, fIxmax, fXmin, fXmax, fNpx, fId, isec, Dpy(isec));
	240	printf("\n \n First Pad: %d %d %f %f %d %d %d %f",
	241	fIymin, fIymax, fYmin, fYmax, fNpyS[isec], fId, isec, Dpy(isec));
	242	*/
4c503756	243	}
d9a3473d	244	//----------------------------------------------------------------------
	245	void AliMUONSegmentationSlatModule::FirstPad(Float_t xhit, Float_t yhit, Float_t /zhit/, Float_t dx, Float_t dy)
	246	{
	247	FirstPad(xhit, yhit, dx, dy);
	248	}
	249	//----------------------------------------------------------------------
4c503756	250	void AliMUONSegmentationSlatModule::NextPad()
	251	{
	252	// Stepper for the iteration over pads
	253	//
	254	// Step to next pad in the integration region
	255	// step from left to right
	256	if (fIx != fIxmax) {
	257	fIx++;
	258	GetPadC(fIx,fIy,fX,fY);
	259	fSector=Sector(fIx,fIy);
	260	// step up
	261	} else if (fIy != fIymax) {
	262	fIx=fIxmin;
	263	fIy++;
	264	GetPadC(fIx,fIy,fX,fY);
	265	fSector=Sector(fIx,fIy);
	266
	267	} else {
	268	fIx=-1;
	269	fIy=-1;
	270	}
	271	// printf("\n Next Pad %d %d %f %f %d %d %d %d %d ",
	272	}
	273
	274
	275	Int_t AliMUONSegmentationSlatModule::MorePads()
de05461e	276	{
4c503756	277	// Stopping condition for the iterator over pads
	278	//
	279	// Are there more pads in the integration region
4c503756	280
	281	return (fIx != -1 \|\| fIy != -1);
	282	}
	283
	284
	285	Int_t AliMUONSegmentationSlatModule::Sector(Int_t ix, Int_t iy)
	286	{
	287	//
	288	// Determine segmentation zone from pad coordinates
	289	//
	290	Int_t isec=-1;
	291	for (Int_t i=0; i < fNsec; i++) {
	292	if (ix <= fNpxS[i]) {
	293	isec=i;
	294	break;
	295	}
	296	}
	297	if (isec == -1) printf("\n Sector: Attention isec ! %d %d %d %d \n",
	298	fId, ix, iy,fNpxS[3]);
	299
	300	return isec;
	301
	302	}
	303
	304	void AliMUONSegmentationSlatModule::
	305	IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
	306	{
	307	// Returns integration limits for current pad
	308	//
	309
	310	x1=fXhit-fX-Dpx(fSector)/2.;
	311	x2=x1+Dpx(fSector);
	312	y1=fYhit-fY-Dpy(fSector)/2.;
	313	y2=y1+Dpy(fSector);
	314	// printf("\n Integration Limits %f %f %f %f %d %f", x1, x2, y1, y2, fSector, Dpx(fSector));
	315
	316	}
	317
	318	void AliMUONSegmentationSlatModule::
	319	Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
	320	{
	321	// Returns list of next neighbours for given Pad (iX, iY)
	322	//
	323	//
	324	Int_t i=0;
	325	//
	326	// step right
	327	if (iX+1 <= fNpx) {
	328	Xlist[i]=iX+1;
	329	Ylist[i++]=iY;
	330	}
	331	//
	332	// step left
	333	if (iX-1 > 0) {
	334	Xlist[i]=iX-1;
	335	Ylist[i++]=iY;
	336	}
	337
	338	//
	339	// step up
	340	if (iY+1 <= fNpy) {
	341	Xlist[i]=iX;
	342	Ylist[i++]=iY+1;
	343	}
344	//
345	// step down
346	if (iY-1 > 0) {
347	Xlist[i]=iX;
348	Ylist[i++]=iY-1;
349	}
350
351	*Nlist=i;
352	}
353
354
355	void AliMUONSegmentationSlatModule::Init(Int_t chamber)
356	{
4c503756	357	//
	358	// Fill the arrays fCx (x-contour) and fNpxS (ix-contour) for each sector
	359	// These arrays help in converting from real to pad co-ordinates and
	360	// vice versa
	361	//
	362	// Segmentation is defined by rectangular modules approximating
	363	// concentric circles as shown below
	364	//
	365	// PCB module size in cm
9e1a0ddb	366	// printf("\n Initialise Segmentation SlatModule \n");
de05461e	367
4c503756	368	fDxPCB=40;
	369	fDyPCB=40;
	370	//
	371	// number of pad rows per PCB
	372	//
	373	Int_t nPyPCB=Int_t(fDyPCB/fDpy);
	374	//
	375	// maximum number of pad rows
	376	fNpy=nPyPCB;
	377	//
	378	// Calculate padsize along x
	379	(*fDpxD)[fNsec-1]=fDpx;
	380	if (fNsec > 1) {
	381	for (Int_t i=fNsec-2; i>=0; i--){
	382	(fDpxD)[i]=(fDpxD)[fNsec-1]/(*fNDiv)[i];
4c503756	383	}
	384	}
	385	//
	386	// fill the arrays defining the pad segmentation boundaries
	387	//
	388	//
	389	// Loop over sectors (isec=0 is the dead space surounding the beam pipe)
	390	for (Int_t isec=0; isec<4; isec++) {
	391	if (isec==0) {
	392	fNpxS[0] = 0;
	393	fNpyS[0] = 0;
	394	fCx[0] = 0;
	395	} else {
	396	fNpxS[isec]=fNpxS[isec-1] + fPcbBoards[isec]Int_t(fDxPCB/(fDpxD)[isec]);
	397	fNpyS[isec]=fNpy;
	398	fCx[isec]=fCx[isec-1] + fPcbBoards[isec]*fDxPCB;
	399	}
	400	} // sectors
	401	// maximum number of pad rows
	402	fNpy=nPyPCB;
	403	fNpx=fNpxS[3];
de2f6d11	404	//
de2f6d11	405	fId = chamber;
4c503756	406	}
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