1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
21 #include "AliMUONSegmentationSlatN.h"
22 #include "AliMUONSegmentationSlatModuleN.h"
24 //___________________________________________
25 ClassImp(AliMUONSegmentationSlatN);
27 AliMUONSegmentationSlatN::AliMUONSegmentationSlatN()
28 : AliMUONSegmentationSlat()
30 // Default constructor
34 AliMUONSegmentationSlatN::AliMUONSegmentationSlatN(Int_t nsec)
35 : AliMUONSegmentationSlat(nsec)
37 // Non default constructor
41 Float_t AliMUONSegmentationSlatN::Dpx(Int_t /*isec*/) const
44 // Returns y-pad size for given sector isec
48 Float_t AliMUONSegmentationSlatN::Dpy(Int_t isec) const
51 // Returns x-pad size for given sector isec
52 // isec = 100*islat+iregion
57 return Slat(islat)->Dpy(iregion);
62 void AliMUONSegmentationSlatN::GlobalToLocal(
63 Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal) const
66 // Perform local to global transformation for pad coordinates
75 // Find slat number (index) and iylocal
76 for (Int_t i=0; i<fNSlats; i++) {
77 if (ix <= Slat(i)->Npx()) {
78 Int_t isec=Slat(i)->Sector(ix,1);
79 iytemp-=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
81 if (iytemp <= 0) break;
89 void AliMUONSegmentationSlatN::LocalToGlobal(
90 Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy) const
92 // Local to global transformation for pad coordinates
98 // Find iy global by adding iy offset from slats below
99 for (i=0; i<islat; i++) {
100 if (ixlocal <= Slat(i)->Npx()) {
101 Int_t isec=Slat(i)->Sector(ixlocal,1);
102 iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
106 // Perform symmetry transformation
111 void AliMUONSegmentationSlatN::
112 GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
114 // Returns pad coordinates for given set of space coordinates
117 Float_t xlocal, ylocal;
118 // Transform to local coordinates
119 AliMUONSegmentationSlat::GlobalToLocal(x,y,z,islat,xlocal,ylocal);
120 Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
121 // add to local iy offfset from slats below
122 for (i=0; i<islat; i++) {
123 if (ix <= Slat(i)->Npx()) {
124 Int_t isec=Slat(i)->Sector(ix,1);
125 iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
128 // Determine sign depending on quadrant
129 ix=ix*Int_t(TMath::Sign((Float_t)1.,x));
132 AliMUONSegmentationSlatModule* AliMUONSegmentationSlatN::
133 CreateSlatModule() const
135 // Factory method for slat module
136 return new AliMUONSegmentationSlatModuleN(4);