1 #ifndef ALIMUONSEGMENTATIONV0_H
2 #define ALIMUONSEGMENTATIONV0_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 #include "AliSegmentation.h"
12 //----------------------------------------------
14 // Chamber segmentation for homogeneously segmented circular chamber
16 class AliMUONSegmentationV0 :
17 public AliSegmentation {
19 AliMUONSegmentationV0(){}
20 AliMUONSegmentationV0(const AliMUONSegmentationV0 & segmentation);
22 virtual ~AliMUONSegmentationV0(){}
23 // Set Chamber Segmentation Parameters
26 virtual void SetPadSize(Float_t p1, Float_t p2);
28 virtual void SetDAnod(Float_t D) {fWireD = D;};
29 // Transform from pad (wire) to real coordinates and vice versa
31 // Anod wire coordinate closest to xhit
32 virtual Float_t GetAnod(Float_t xhit) const;
33 // Transform from pad to real coordinates
34 virtual void GetPadI(Float_t x, Float_t y , Int_t &ix, Int_t &iy) ;
35 virtual void GetPadI(Float_t x, Float_t y , Float_t z, Int_t &ix, Int_t &iy)
36 {GetPadI(x, y, ix, iy);}
37 // Transform from real to pad coordinates
38 virtual void GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y) ;
39 virtual void GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z)
40 {z=0; GetPadC(ix, iy, x , y);}
43 virtual void Init(Int_t chamber);
48 virtual Float_t Dpx() const {return fDpx;}
50 virtual Float_t Dpy() const {return fDpy;}
51 // Pad size in x by Sector
52 virtual Float_t Dpx(Int_t) const {return fDpx;}
53 // Pad size in y by Secto
54 virtual Float_t Dpy(Int_t) const {return fDpy;}
55 // Maximum number of Pads in x
56 virtual Int_t Npx() const {return fNpx;}
57 // Maximum number of Pads in y
58 virtual Int_t Npy() const {return fNpy;}
60 virtual void SetPad(Int_t ix, Int_t iy);
62 virtual void SetHit(Float_t xhit, Float_t yhit);
63 virtual void SetHit(Float_t xhit, Float_t yhit, Float_t zhit)
68 virtual void FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy);
69 virtual void FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy)
70 {FirstPad(xhit, yhit, dx, dy);}
72 virtual void NextPad();
74 virtual Int_t MorePads();
76 // Distance between 1 pad and a position
77 virtual Float_t Distance2AndOffset(Int_t iX, Int_t iY, Float_t X, Float_t Y, Int_t *
79 // Number of pads read in parallel and offset to add to x
80 // (specific to LYON, but mandatory for display)
81 virtual void GetNParallelAndOffset(Int_t iX, Int_t iY,
82 Int_t *Nparallel, Int_t *Offset) {*Nparallel=1;*Offset=0;}
83 // Get next neighbours
84 virtual void Neighbours
85 (Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10]) ;
87 // Current Pad during Integration
89 virtual Int_t Ix() {return fIx;}
91 virtual Int_t Iy() {return fIy;}
93 virtual Int_t ISector() const {return 1;}
94 // calculate sector from pad coordinates
95 virtual Int_t Sector(Int_t ix, Int_t iy) {return 1;}
97 // Signal Generation Condition during Stepping
98 virtual Int_t SigGenCond(Float_t x, Float_t y, Float_t z) ;
99 // Initialise signal gneration at coord (x,y,z)
100 virtual void SigGenInit(Float_t x, Float_t y, Float_t z);
101 // Current integration limits
102 virtual void IntegrationLimits
103 (Float_t& x1, Float_t& x2, Float_t& y1, Float_t& y2);
104 // Test points for auto calibration
105 virtual void GiveTestPoints(Int_t &n, Float_t *x, Float_t *y) const;
106 // Draw segmentation zones
107 virtual void Draw(const char *opt="") const;
108 // Function for systematic corrections
109 // Set the correction function
110 virtual void SetCorrFunc(Int_t dum, TF1* func) {fCorr=func;}
111 // Get the correction Function
112 virtual TF1* CorrFunc(Int_t) const {return fCorr;}
113 // assignment operator
114 AliMUONSegmentationV0& operator=(const AliMUONSegmentationV0& rhs);
116 ClassDef(AliMUONSegmentationV0,1) //Class for homogeneous segmentation
119 // Implementation of the segmentation class:
120 // Version 0 models rectangular pads with the same dimensions all
121 // over the cathode plane. Chamber has circular geometry.
123 // Geometry parameters
125 Float_t fDpx; // x pad width per sector
126 Float_t fDpy; // y pad base width
127 Int_t fNpx; // Number of pads in x
128 Int_t fNpy; // Number of pads in y
129 Float_t fWireD; // wire pitch
130 Float_t fRmin; // inner radius
131 Float_t fRmax; // outer radius
134 // Chamber region consideres during disintegration
135 Int_t fIxmin; // lower left x
136 Int_t fIxmax; // lower left y
137 Int_t fIymin; // upper right x
138 Int_t fIymax; // upper right y
140 // Current pad during integration (cursor for disintegration)
141 Int_t fIx; // pad coord. x
142 Int_t fIy; // pad coord. y
143 Float_t fX; // real coord. x
144 Float_t fY; // real ccord. y
146 // Current pad and wire during tracking (cursor at hit centre)
149 Float_t fXhit; // x-position of hit
150 Float_t fYhit; // y-position of hit
151 // Reference point to define signal generation condition
152 Int_t fIxt; // pad coord. x
153 Int_t fIyt; // pad coord. y
154 Int_t fIwt; // wire number
157 TF1* fCorr; // correction function