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 */
7 // Revision of includes 07/05/2004
9 //----------------------------------------------
11 // Chamber segmentation for homogeneously segmented circular chamber
14 #include "AliSegmentation.h"
19 class AliMUONSegmentationV0 : public AliSegmentation
22 AliMUONSegmentationV0();
23 virtual ~AliMUONSegmentationV0(){}
25 // Set Chamber Segmentation Parameters
28 virtual void SetPadSize(Float_t p1, Float_t p2);
30 virtual void SetDAnod(Float_t D) {fWireD = D;};
31 // Transform from pad (wire) to real coordinates and vice versa
33 // Anod wire coordinate closest to xhit
34 virtual Float_t GetAnod(Float_t xhit) const;
35 // Transform from pad to real coordinates
36 virtual void GetPadI(Float_t x, Float_t y , Int_t &ix, Int_t &iy) ;
37 virtual void GetPadI(Float_t x, Float_t y , Float_t z, Int_t &ix, Int_t &iy) ;
38 // Transform from real to pad coordinates
39 virtual void GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y) ;
40 virtual void GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z)
41 {z=fZ; GetPadC(ix, iy, x , y);}
44 // virtual void Init(Int_t chamber);
49 virtual Float_t Dpx() const {return fDpx;}
51 virtual Float_t Dpy() const {return fDpy;}
52 // Pad size in x by Sector
53 virtual Float_t Dpx(Int_t) const {return fDpx;}
54 // Pad size in y by Secto
55 virtual Float_t Dpy(Int_t) const {return fDpy;}
56 // Maximum number of Pads in x
57 virtual Int_t Npx() const {return fNpx;}
58 // Maximum number of Pads in y
59 virtual Int_t Npy() const {return fNpy;}
61 virtual void SetPad(Int_t ix, Int_t iy);
63 virtual void SetHit(Float_t xhit, Float_t yhit);
64 virtual void SetHit(Float_t xhit, Float_t yhit, Float_t zhit);
67 virtual void FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy);
68 virtual void FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy);
70 virtual void NextPad();
72 virtual Int_t MorePads();
74 // Distance between 1 pad and a position
75 virtual Float_t Distance2AndOffset(Int_t iX, Int_t iY, Float_t X, Float_t Y, Int_t *
77 // Number of pads read in parallel and offset to add to x
78 // (specific to LYON, but mandatory for display)
79 virtual void GetNParallelAndOffset(Int_t iX, Int_t iY, Int_t *Nparallel, Int_t *Offset);
80 // Get next neighbours
81 virtual void Neighbours
82 (Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10]) ;
84 // Current Pad during Integration
86 virtual Int_t Ix() {return fIx;}
88 virtual Int_t Iy() {return fIy;}
90 virtual Int_t ISector() {return 1;}
91 // calculate sector from pad coordinates
92 virtual Int_t Sector(Int_t ix, Int_t iy);
93 virtual Int_t Sector(Float_t x, Float_t y);
95 // Signal Generation Condition during Stepping
96 virtual Int_t SigGenCond(Float_t x, Float_t y, Float_t z) ;
97 // Initialise signal gneration at coord (x,y,z)
98 virtual void SigGenInit(Float_t x, Float_t y, Float_t z);
99 // Current integration limits
100 virtual void IntegrationLimits
101 (Float_t& x1, Float_t& x2, Float_t& y1, Float_t& y2);
102 // Test points for auto calibration
103 virtual void GiveTestPoints(Int_t &n, Float_t *x, Float_t *y) const;
104 // Draw segmentation zones
105 // virtual void Draw(const char *opt="");
106 // Function for systematic corrections
107 // Set the correction function
108 virtual void SetCorrFunc(Int_t dum, TF1* func);
109 // Get the correction Function
110 virtual TF1* CorrFunc(Int_t) const {return fCorr;}
112 ClassDef(AliMUONSegmentationV0,1) //Class for homogeneous segmentation
115 AliMUONSegmentationV0(const AliMUONSegmentationV0 & segmentation);
116 // assignment operator
117 AliMUONSegmentationV0& operator=(const AliMUONSegmentationV0& rhs);
120 // Implementation of the segmentation class:
121 // Version 0 models rectangular pads with the same dimensions all
122 // over the cathode plane. Chamber has circular geometry.
124 // Geometry parameters
126 Float_t fDpx; // x pad width per sector
127 Float_t fDpy; // y pad base width
128 Int_t fNpx; // Number of pads in x
129 Int_t fNpy; // Number of pads in y
130 Float_t fWireD; // wire pitch
131 Float_t fRmin; // inner radius
132 Float_t fRmax; // outer radius
135 // Chamber region consideres during disintegration
136 Int_t fIxmin; // ! lower left x
137 Int_t fIxmax; // ! lower left y
138 Int_t fIymin; // ! upper right x
139 Int_t fIymax; // ! upper right y
141 // Current pad during integration (cursor for disintegration)
142 Int_t fIx; // ! pad coord. x
143 Int_t fIy; // ! pad coord. y
144 Float_t fX; // ! real coord. x
145 Float_t fY; // ! real ccord. y
147 // Current pad and wire during tracking (cursor at hit centre)
150 Float_t fXhit; // ! x-position of hit
151 Float_t fYhit; // ! y-position of hit
152 // Reference point to define signal generation condition
153 Int_t fIxt; // ! pad coord. x
154 Int_t fIyt; // ! pad coord. y
155 Int_t fIwt; // ! wire number
158 TF1* fCorr; // ! correction function
160 AliMUONChamber* fChamber; // ! Reference to mother chamber
161 Int_t fId; // Identifier
162 Float_t fZ; // z-position of chamber