* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.4.4.5 2000/03/04 23:42:39 nilsen
-Updated the comments/documentations and improved the maintainability of the
-code.
-
-Revision 1.4.4.4 2000/03/02 21:27:07 nilsen
-Added two functions, SetByAngles and SetTrans.
-
-Revision 1.4.4.3 2000/01/23 03:09:10 nilsen
-// fixed compiler warnings for new function LtLErrorMatrix(...)
-
-Revision 1.4.4.2 2000/01/19 23:18:20 nilsen
-Added transformations of Error matrix to AliITSgeom and fixed some typos
-in AliITS.h and AliITShitIndex.h
-
-Revision 1.4.4.1 2000/01/12 19:03:32 nilsen
-This is the version of the files after the merging done in December 1999.
-See the ReadMe110100.txt file for details
-
-Revision 1.4 1999/10/15 07:03:20 fca
-Fixed bug in GetModuleId(Int_t index,Int_t &lay,Int_t &lad, Int_t &det) and
-a typo in the creator. aliroot need to be rerun to get a fixed geometry.
-
-Revision 1.3 1999/10/04 15:20:12 fca
-Correct syntax accepted by g++ but not standard for static members, remove minor warnings
-
-Revision 1.2 1999/09/29 09:24:20 fca
-Introduction of the Copyright and cvs Log
-
-*/
+/* $Id$ */
///////////////////////////////////////////////////////////////////////
// ITS geometry manipulation routines. //
// By: Bjorn S. Nilsen //
// version: 0.0.1 //
// Updated May 27 1999. //
-// Added Cylindrical random and global based changes. //
+// Added Cylindrical random and global based changes. //
// Added function PrintComparison. //
+// Modified and added functions Feb. 7 2006 //
///////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
-// The structure AliITSgeomS:
-// The structure AliITSgeomS has been defined to hold all of the
-// information necessary to do the coordinate transformations for one
-// detector between the ALICE Cartesian global and the detector local
-// coordinate systems. The rotations are implemented in the following
-// order, Rz*Ry*Rx*(Vglobal-Vtrans)=Vlocal (in matrix notation).
-// In addition it contains an index to the TObjArray containing all of
-// the information about the shape of the active detector volume, and
-// any other useful detector parameters. See the definition of *fShape
-// below and the classes AliITSgeomSPD, AliITSgeomSDD, and AliITSgeomSSD
-// for a full description. This structure is not available outside of
-// these routines.
-//
-// Int_t fShapeIndex
-// The index to the array of detector shape information. In this way
-// only an index is needed to be stored and not all of the shape
-// information. This saves much space since most, if not all, of the
-// detectors of a give type have the same shape information and are only
-// placed in a different spot in the ALICE/ITS detector.
-//
-// Float_t fx0,fy0,fz0
-// The Cartesian translation vector used to define part of the
-// coordinate transformation. The units of the translation are kept
-// in the Monte Carlo distance units, usually cm.
-//
-// Float_t frx,fry,frz
-// The three rotation angles that define the rotation matrix. The
-// angles are, frx the rotation about the x axis. fry the rotation about
-// the "new" or "rotated" y axis. frz the rotation about the "new" or
-// "rotated" z axis. These angles, although redundant with the rotation
-// matrix fr, are kept for speed. This allows for their retrieval without
-// having to compute them each and every time. The angles are kept in
-// radians
-//
-// Float_t fr[9]
-// The 3x3 rotation matrix defined by the angles frx, fry, and frz,
-// for the Global to Local transformation is
-// |fr[0] fr[1] fr[2]| | cos(frz) sin(frz) 0| | cos(fry) 0 sin(fry)|
-// fr=|fr[3] fr[4] fr[4]|=|-sin(frz) cos(frz) 0|*| 0 1 0 |
-// |fr[6] fr[7] fr[8]| | 0 0 1| |-sin(fry) 0 cos(fry)|
-//
-// |1 0 0 |
-// *|0 cos(frx) sin(frx)|
-// |0 -sin(frx) cos(frx)|
-//
-// Even though this information is redundant with the three rotation
-// angles, because this transformation matrix can be used so much it is
-// kept to speed things up a lot. The coordinate system used is Cartesian.
-//
// The local coordinate system by, default, is show in the following
// figures. Also shown are the ladder numbering scheme.
//Begin_Html
/*
+<img src="picts/ITS/AliITSgeomMatrix_L1.gif">
+</pre>
+<br clear=left>
+<font size=+2 color=blue>
+<p>This shows the relative geometry differences between the ALICE Global
+coordinate system and the local detector coordinate system.
+</font>
+<pre>
+
+<pre>
<img src="picts/ITS/its1+2_convention_front_5.gif">
</pre>
<br clear=left>
<pre>
*/
//End_Html
-
+//
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
//
// Data Members:
//
+// TString fVersion
+// Transformation version.
+// Int_t fTrans
+// Flag to keep track of which transformation
+// Int_t fNmodules
+// The total number of modules
// Int_t fNlayers
// The number of ITS layers for this geometry. By default this
// is 6, but can be modified by the creator function if there are
// more layers defined.
//
-// Int_t *fNlad
+// TArrayI fNlad
// A pointer to an array fNlayers long containing the number of
// ladders for each layer. This array is typically created and filled
// by the AliITSgeom creator function.
//
-// Int_t *fNdet
+// TArrayI fNdet
// A pointer to an array fNlayers long containing the number of
// active detector volumes for each ladder. This array is typically
// created and filled by the AliITSgeom creator function.
//
-// AliITSgeomS **fGm
-// A pointer to an array of pointers pointing to the AliITSgeomS
-// structure containing the coordinate transformation information.
-// The AliITSgeomS structure corresponding to layer=lay, ladder=lad,
-// and detector=det is gotten by fGm[lay-1][(fNlad[lay-1]*(lad-1)+det-1)].
-// In this way a lot of space is saved over trying to keep a three
-// dimensional array fNlayersXmax(fNlad)Xmax(fNdet), since the number
-// of detectors typically increases with layer number.
+// TObjArray fGm containing objects of type AliITSgeomMatrix
+// A pointer to an array of AliITSgeomMatrix classes. One element
+// per module (detector) in the ITS. AliITSgeomMatrix basicly contains
+// all of the necessary information about the detector and it's coordinate
+// transformations.
//
-// TObjArray *fShape
+// TObjArray fShape containting objects of type AliITSgeom
// A pointer to an array of TObjects containing the detailed shape
// information for each type of detector used in the ITS. For example
-// I have created AliITSgeomSPD, AliITSgeomSDD, and AliITSgeomSSD as
-// example structures, derived from TObjects, to hold the detector
-// information. I would recommend that one element in each of these
-// structures, that which describes the shape of the active volume,
-// be one of the ROOT classes derived from TShape. In this way it would
-// be easy to have the display program display the correct active
-// ITS volumes. See the example classes AliITSgeomSPD, AliITSgeomSDD,
-// and AliITSgeomSSD for a more detailed example.
-//
-// Inlined Member Functions:
-//
-// Int_t GetNdetectors(Int_t layer)
-// This function returns the number of detectors/ladder for a give
-// layer. In particular it returns fNdet[layer-1].
-//
-// Int_t GetNladders(Int_t layer)
-// This function returns the number of ladders for a give layer. In
-// particular it returns fNlad[layer-1].
-//
-// Int_t GetNlayers()
-// This function returns the number of layers defined in the ITS
-// geometry. In particular it returns fNlayers.
-//
-// GetAngles(Int_t layer,Int_t ladder,Int_t detector,
-// Float_t &rx, Float_t &ry, Float_t &rz)
-// This function returns the rotation angles for a give detector on
-// a give ladder in a give layer in the three floating point variables
-// provided. rx = frx, fy = fry, rz = frz. The angles are in radians
-//
-// GetTrans(Int_t layer,Int_t ladder,Int_t detector,
-// Float_t &x, Float_t &y, Float_t &z)
-// This function returns the Cartesian translation for a give
-// detector on a give ladder in a give layer in the three floating
-// point variables provided. x = fx0, y = fy0, z = fz0. The units are
-// those of the Monte Carlo, generally cm.
-//
-// SetTrans(Int_t layer,Int_t ladder,Int_t detector,
-// Float_t x, Float_t y, Float_t z)
-// This function sets a new translation vector, given by the three
-// variables x, y, and z, for the Cartesian coordinate transformation
-// for the detector defined by layer, ladder and detector.
-//
-// Int_t IsVersion()
-// This function returns the version number of this AliITSgeom
-// class.
-//
-// AddShape(TObject *shape)
-// This function adds one more shape element to the TObjArray
-// fShape. It is primarily used in the constructor functions of the
-// AliITSgeom class. The pointer *shape can be the pointer to any
-// class that is derived from TObject (this is true for nearly every
-// ROOT class). This does not appear to be working properly at this time.
-//
-// Int_t GetStartSPD()
-// This functions returns the starting module index number for the
-// silicon pixels detectors (SPD). Typically this is zero. To loop over all
-// of the pixel detectors do: for(Int_t i=GetStartSPD();i<=GetLastSPD();i++)
-//
-// Int_t GetLastSPD()
-// This functions returns the last module index number for the
-// silicon pixels detectors (SPD). To loop over all of the pixel detectors
-// do: for(Int_t i=GetStartSPD();i<=GetLastSPD();i++)
-//
-// Int_t GetStartSDD()
-// This functions returns the starting module index number for the
-// silicon drift detectors (SDD). To loop over all of the drift detectors
-// do: for(Int_t i=GetStartSDD();i<=GetLastSDD();i++)
-//
-// Int_t GetLastSDD()
-// This functions returns the last module index number for the
-// silicon drift detectors (SDD). To loop over all of the drift detectors
-// do: for(Int_t i=GetStartSDD();i<=GetLastSDD();i++)
-//
-// Int_t GetStartSSD()
-// This functions returns the starting module index number for the
-// silicon strip detectors (SSD). To loop over all of the strip detectors
-// do: for(Int_t i=GetStartSSD();i<=GetLastSSD();i++)
-//
-// Int_t GetStartSSD()
-// This functions returns the last module index number for the
-// silicon strip detectors (SSD). To loop over all of the strip detectors
-// do: for(Int_t i=GetStartSSD();i<=GetLastSSD();i++)
-//
-// TObject *GetShape(Int_t lay,Int_t lad,Int_t det)
-// This functions returns the shape object AliITSgeomSPD, AliITSgeomSDD,
-// or AliITSgeomSSD for that particular module designated by lay, lad, and
-// detector. In principle there can be additional shape objects. In this
-// way a minimum of shape objects are created since one AliITSgeomS?D shape
-// object is used for all modules of that type.
-////////////////////////////////////////////////////////////////////////
-
-#include <iostream.h>
-#include <fstream.h>
-#include <iomanip.h>
-#include <stdio.h>
-#include "AliITSgeom.h"
-#include "AliITSgeomSPD300.h"
-#include "AliITSgeomSPD425.h"
+// I have created AliITSgeomSPD, AliITSgeomSDD, and
+// AliITSsegmenttionSSD as example structures, derived from TObjects,
+// to hold the detector information. I would recommend that one element
+// in each of these structures, that which describes the shape of the
+// active volume, be one of the ROOT classes derived from TShape. In this
+// way it would be easy to have the display program display the correct
+// active ITS volumes. See the example classes AliITSgeomSPD,
+// AliITSgeomSDD, and AliITSgeomSSD for a more detailed
+// example.
+////////////////////////////////////////////////////////////////////////
+#include <Riostream.h>
+#include <ctype.h>
+
+#include <TRandom.h>
+#include <TSystem.h>
+#include <TArrayI.h>
+
+#include "AliITSgeomSPD.h"
#include "AliITSgeomSDD.h"
#include "AliITSgeomSSD.h"
-#include "TRandom.h"
+#include "AliITSgeom.h"
+#include "AliLog.h"
ClassImp(AliITSgeom)
-//_____________________________________________________________________
-AliITSgeom::AliITSgeom(){
-////////////////////////////////////////////////////////////////////////
-// The default constructor for the AliITSgeom class. It, by default,
-// sets fNlayers to zero and zeros all pointers.
-////////////////////////////////////////////////////////////////////////
- // Default constructor.
- // Do not allocate anything zero everything
- fNlayers = 0;
- fNlad = 0;
- fNdet = 0;
- fGm = 0;
- fShape = 0;
- return;
-}
-
-//_____________________________________________________________________
-AliITSgeom::~AliITSgeom(){
-////////////////////////////////////////////////////////////////////////
-// The destructor for the AliITSgeom class. If the arrays fNlad,
-// fNdet, or fGm have had memory allocated to them, there pointer values
-// are non zero, then this memory space is freed and they are set
-// to zero. In addition, fNlayers is set to zero. The destruction of
-// TObjArray fShape is, by default, handled by the TObjArray destructor.
-////////////////////////////////////////////////////////////////////////
- // Default destructor.
- // if arrays exist delete them. Then set everything to zero.
- if(fGm!=0){
- for(Int_t i=0;i<fNlayers;i++) delete[] fGm[i];
- delete[] fGm;
- } // end if fGm!=0
- if(fNlad!=0) delete[] fNlad;
- if(fNdet!=0) delete[] fNdet;
- fNlayers = 0;
- fNlad = 0;
- fNdet = 0;
- fGm = 0;
- return;
-}
-
-//_____________________________________________________________________
-AliITSgeom::AliITSgeom(const char *filename){
-////////////////////////////////////////////////////////////////////////
-// The constructor for the AliITSgeom class. All of the data to fill
-// this structure is read in from the file given my the input filename.
-////////////////////////////////////////////////////////////////////////
- FILE *pf;
- Int_t i;
- AliITSgeomS *g;
- Int_t l,a,d;
- Float_t x,y,z,o,p,q,r,s,t;
- Double_t oor,pr,qr,rr,sr,tr; // Radians
- Double_t lr[9];
- Double_t si; // sin(angle)
- Double_t pi = TMath::Pi(), byPI = pi/180.;
-
- pf = fopen(filename,"r");
-
- fNlayers = 6; // set default number of ladders
- fNlad = new Int_t[fNlayers];
- fNdet = new Int_t[fNlayers];
- // find the number of ladders and detectors in this geometry.
- for(i=0;i<fNlayers;i++){fNlad[i]=fNdet[i]=0;} // zero out arrays
- for(;;){ // for ever loop
- i = fscanf(pf,"%d %d %d %f %f %f %f %f %f %f %f %f",
- &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
- if(i==EOF) break;
- if(l<1 || l>fNlayers) {
- printf("error in file %s layer=%d min is 1 max is %d/n",
- filename,l,fNlayers);
- continue;
- }// end if l
- if(fNlad[l-1]<a) fNlad[l-1] = a;
- if(fNdet[l-1]<d) fNdet[l-1] = d;
- } // end for ever loop
- // counted the number of ladders and detectors now allocate space.
- fGm = new AliITSgeomS* [fNlayers];
- for(i=0;i<fNlayers;i++){
- fGm[i] = 0;
- l = fNlad[i]*fNdet[i];
- fGm[i] = new AliITSgeomS[l]; // allocate space for transforms
- } // end for i
-
- // Set up Shapes for a default configuration of 6 layers.
- fShape = new TObjArray(3);
- AddShape((TObject *) new AliITSgeomSPD300()); // shape 0
- AddShape((TObject *) new AliITSgeomSDD()); // shape 1
- AddShape((TObject *) new AliITSgeomSSD()); // shape 2
-
- // prepare to read in transforms
- rewind(pf); // start over reading file
- for(;;){ // for ever loop
- i = fscanf(pf,"%d %d %d %f %f %f %f %f %f %f %f %f",
- &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
- if(i==EOF) break;
- if(l<1 || l>fNlayers) {
- printf("error in file %s layer=%d min is 1 max is %d/n",
- filename,l,fNlayers);
- continue;
- }// end if l
- l--; a--; d--; // shift layer, ladder, and detector counters to zero base
- i = d + a*fNdet[l]; // position of this detector
- g = &(fGm[l][i]);
-
- oor = byPI*o;
- pr = byPI*p;
- qr = byPI*q;
- rr = byPI*r;
- sr = byPI*s;
- tr = byPI*t;
-
- g->fx0 = x;
- g->fy0 = y;
- g->fz0 = z;
-//
- si = sin(oor);if(o== 90.0) si = +1.0;
- if(o==270.0) si = -1.0;
- if(o== 0.0||o==180.) si = 0.0;
- lr[0] = si * cos(pr);
- lr[1] = si * sin(pr);
- lr[2] = cos(oor);if(o== 90.0||o==270.) lr[2] = 0.0;
- if(o== 0.0) lr[2] = +1.0;
- if(o==180.0) lr[2] = -1.0;
-//
- si = sin(qr);if(q== 90.0) si = +1.0;
- if(q==270.0) si = -1.0;
- if(q== 0.0||q==180.) si = 0.0;
- lr[3] = si * cos(rr);
- lr[4] = si * sin(rr);
- lr[5] = cos(qr);if(q== 90.0||q==270.) lr[5] = 0.0;
- if(q== 0.0) lr[5] = +1.0;
- if(q==180.0) lr[5] = -1.0;
-//
- si = sin(sr);if(s== 90.0) si = +1.0;
- if(s==270.0) si = -1.0;
- if(s== 0.0||s==180.) si = 0.0;
- lr[6] = si * cos(tr);
- lr[7] = si * sin(tr);
- lr[8] = cos(sr);if(s== 90.0||s==270.0) lr[8] = 0.0;
- if(s== 0.0) lr[8] = +1.0;
- if(s==180.0) lr[8] = -1.0;
- // Normalize these elements
- for(a=0;a<3;a++){// reuse float Si and integers a and d.
- si = 0.0;
- for(d=0;d<3;d++) si += lr[3*a+d]*lr[3*a+d];
- si = TMath::Sqrt(1./si);
- for(d=0;d<3;d++) g->fr[3*a+d] = lr[3*a+d] = si*lr[3*a+d];
- } // end for a
- // get angles from matrix up to a phase of 180 degrees.
- oor = atan2(lr[7],lr[8]);if(oor<0.0) oor += 2.0*pi;
- pr = asin(lr[2]); if(pr<0.0) pr += 2.0*pi;
- qr = atan2(lr[3],lr[0]);if(qr<0.0) qr += 2.0*pi;
- g->frx = oor;
- g->fry = pr;
- g->frz = qr;
- // l = layer-1 at this point.
- if(l==0||l==1) g->fShapeIndex = 0; // SPD's
- else if(l==2||l==3) g->fShapeIndex = 1; // SDD's
- else if(l==4||l==5) g->fShapeIndex = 2; // SSD's
- } // end for ever loop
- fclose(pf);
-}
-
-//________________________________________________________________________
-AliITSgeom::AliITSgeom(const AliITSgeom &source){
-////////////////////////////////////////////////////////////////////////
-// The copy constructor for the AliITSgeom class. It calls the
-// = operator function. See the = operator function for more details.
-////////////////////////////////////////////////////////////////////////
-
- *this = source; // Just use the = operator for now.
-
- return;
-}
-
-//________________________________________________________________________
-/*void AliITSgeom::operator=(const AliITSgeom &source){
-////////////////////////////////////////////////////////////////////////
-// The = operator function for the AliITSgeom class. It makes an
-// independent copy of the class in such a way that any changes made
-// to the copied class will not affect the source class in any way.
-// This is required for many ITS alignment studies where the copied
-// class is then modified by introducing some misalignment.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k;
-
- if(this == &source) return; // don't assign to ones self.
-
- // if there is an old structure allocated delete it first.
- if(fGm != 0){
- for(i=0;i<fNlayers;i++) delete[] fGm[i];
- delete[] fGm;
- } // end if fGm != 0
- if(fNlad != 0) delete[] fNlad;
- if(fNdet != 0) delete[] fNdet;
-
- fNlayers = source.fNlayers;
- fNlad = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) fNlad[i] = source.fNlad[i];
- fNdet = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) fNdet[i] = source.fNdet[i];
- fShape = new TObjArray(*(source.fShape));//This does not make a proper copy.
- fGm = new AliITSgeomS* [fNlayers];
- for(i=0;i<fNlayers;i++){
- fGm[i] = new AliITSgeomS[fNlad[i]*fNdet[i]];
- for(j=0;j<(fNlad[i]*fNdet[i]);j++){
- fGm[i][j].fShapeIndex = source.fGm[i][j].fShapeIndex;
- fGm[i][j].fx0 = source.fGm[i][j].fx0;
- fGm[i][j].fy0 = source.fGm[i][j].fy0;
- fGm[i][j].fz0 = source.fGm[i][j].fz0;
- fGm[i][j].frx = source.fGm[i][j].frx;
- fGm[i][j].fry = source.fGm[i][j].fry;
- fGm[i][j].frz = source.fGm[i][j].frz;
- for(k=0;k<9;k++) fGm[i][j].fr[k] = source.fGm[i][j].fr[k];
- } // end for j
- } // end for i
- return;
- }*/
-//________________________________________________________________________
-AliITSgeom& AliITSgeom::operator=(const AliITSgeom &source){
-////////////////////////////////////////////////////////////////////////
-// The = operator function for the AliITSgeom class. It makes an
-// independent copy of the class in such a way that any changes made
-// to the copied class will not affect the source class in any way.
-// This is required for many ITS alignment studies where the copied
-// class is then modified by introducing some misalignment.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k;
-
- if(this == &source) return *this; // don't assign to ones self.
-
- // if there is an old structure allocated delete it first.
- if(fGm != 0){
- for(i=0;i<fNlayers;i++) delete[] fGm[i];
- delete[] fGm;
- } // end if fGm != 0
- if(fNlad != 0) delete[] fNlad;
- if(fNdet != 0) delete[] fNdet;
-
- fNlayers = source.fNlayers;
- fNlad = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) fNlad[i] = source.fNlad[i];
- fNdet = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) fNdet[i] = source.fNdet[i];
- fShape = new TObjArray(*(source.fShape));//This does not make a proper copy.
- fGm = new AliITSgeomS* [fNlayers];
- for(i=0;i<fNlayers;i++){
- fGm[i] = new AliITSgeomS[fNlad[i]*fNdet[i]];
- for(j=0;j<(fNlad[i]*fNdet[i]);j++){
- fGm[i][j].fShapeIndex = source.fGm[i][j].fShapeIndex;
- fGm[i][j].fx0 = source.fGm[i][j].fx0;
- fGm[i][j].fy0 = source.fGm[i][j].fy0;
- fGm[i][j].fz0 = source.fGm[i][j].fz0;
- fGm[i][j].frx = source.fGm[i][j].frx;
- fGm[i][j].fry = source.fGm[i][j].fry;
- fGm[i][j].frz = source.fGm[i][j].frz;
- for(k=0;k<9;k++) fGm[i][j].fr[k] = source.fGm[i][j].fr[k];
- } // end for j
- } // end for i
- return *this;
-}
-//________________________________________________________________________
-void AliITSgeom::GtoL(Int_t lay,Int_t lad,Int_t det,
- const Double_t *g,Double_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the global ALICE Cartesian coordinate
-// to local active volume detector Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The global coordinates are entered by
-// the three element Double_t array g and the local coordinate values
-// are returned by the three element Double_t array l. The order of the
-// three elements are g[0]=x, g[1]=y, and g[2]=z, similarly for l.
-////////////////////////////////////////////////////////////////////////
- Double_t x,y,z;
- AliITSgeomS *gl;
-
- lay--; lad--; det--;
- gl = &(fGm[lay][fNdet[lay]*lad+det]);
-
- x = g[0] - gl->fx0;
- y = g[1] - gl->fy0;
- z = g[2] - gl->fz0;
- l[0] = gl->fr[0]*x + gl->fr[1]*y + gl->fr[2]*z;
- l[1] = gl->fr[3]*x + gl->fr[4]*y + gl->fr[5]*z;
- l[2] = gl->fr[6]*x + gl->fr[7]*y + gl->fr[8]*z;
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::GtoL(const Int_t *id,const Double_t *g,Double_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the id[0]=layer,
-// id[1]=ladder, and id[2]=detector numbers. The local coordinates are
-// entered by the three element Double_t array l and the global coordinate
-// values are returned by the three element Double_t array g. The order of the
-// three elements are l[0]=x, l[1]=y, and l[2]=z, similarly for g.
-////////////////////////////////////////////////////////////////////////
- GtoL(id[0],id[1],id[2],g,l);
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::GtoL(const Int_t index,const Double_t *g,Double_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the detector
-// index numbers (see GetModuleIndex and GetModuleID). The local
-// coordinates are entered by the three element Double_t array l and the
-// global coordinate values are returned by the three element Double_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z, similarly
-// for g.
-////////////////////////////////////////////////////////////////////////
- Int_t lay,lad,det;
-
- this->GetModuleId(index,lay,lad,det);
-
- GtoL(lay,lad,det,g,l);
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::GtoL(Int_t lay,Int_t lad,Int_t det,
- const Float_t *g,Float_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the global ALICE Cartesian coordinate
-// to local active volume detector Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The global coordinates are entered by
-// the three element Float_t array g and the local coordinate values
-// are returned by the three element Float_t array l. The order of the
-// three elements are g[0]=x, g[1]=y, and g[2]=z, similarly for l.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- Double_t gd[3],ld[3];
-
- for(i=0;i<3;i++) gd[i] = (Double_t) g[i];
- GtoL(lay,lad,det,(Double_t *)gd,(Double_t *)ld);
- for(i=0;i<3;i++) l[i] = (Float_t) ld[i];
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::GtoL(const Int_t *id,const Float_t *g,Float_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the Int_t array id,
-// id[0]=layer, id[1]=ladder, and id[2]=detector numbers. The local
-// coordinates are entered by the three element Float_t array l and the
-// global coordinate values are returned by the three element Float_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z, similarly
-// for g. The order of the three elements are g[0]=x, g[1]=y, and g[2]=z,
-// similarly for l.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- Double_t gd[3],ld[3];
-
- for(i=0;i<3;i++) gd[i] = (Double_t) g[i];
- GtoL(id[0],id[1],id[2],(Double_t *)gd,(Double_t *)ld);
- for(i=0;i<3;i++) l[i] = (Float_t) ld[i];
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::GtoL(const Int_t index,const Float_t *g,Float_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the detector
-// index numbers (see GetModuleIndex and GetModuleID). The local
-// coordinates are entered by the three element Float_t array l and the
-// global coordinate values are returned by the three element Float_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z, similarly
-// for g.
-////////////////////////////////////////////////////////////////////////
- Int_t lay,lad,det;
- Int_t i;
- Double_t gd[3],ld[3];
-
- this->GetModuleId(index,lay,lad,det);
-
- for(i=0;i<3;i++) gd[i] = (Double_t) g[i];
- GtoL(lay,lad,det,(Double_t *)gd,(Double_t *)ld);
- for(i=0;i<3;i++) l[i] = (Float_t) ld[i];
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::LtoG(Int_t lay,Int_t lad,Int_t det,
- const Double_t *l,Double_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The local coordinates are entered by
-// the three element Float_t array l and the global coordinate values
-// are returned by the three element Float_t array g. The order of the
-// three elements are l[0]=x, l[1]=y, and l[2]=z, similarly for g.
-////////////////////////////////////////////////////////////////////////
- Double_t x,y,z;
- AliITSgeomS *gl;
-
- lay--; lad--; det--;
- gl = &(fGm[lay][fNdet[lay]*lad+det]);
-
- x = gl->fr[0]*l[0] + gl->fr[3]*l[1] + gl->fr[6]*l[2];
- y = gl->fr[1]*l[0] + gl->fr[4]*l[1] + gl->fr[7]*l[2];
- z = gl->fr[2]*l[0] + gl->fr[5]*l[1] + gl->fr[8]*l[2];
- g[0] = x + gl->fx0;
- g[1] = y + gl->fy0;
- g[2] = z + gl->fz0;
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::LtoG(const Int_t *id,const Double_t *l,Double_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the three
-// element array Id containing as it's three elements Id[0]=layer,
-// Id[1]=ladder, and Id[2]=detector numbers. The local coordinates
-// are entered by the three element Double_t array l and the global
-// coordinate values are returned by the three element Double_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z,
-// similarly for g.
-////////////////////////////////////////////////////////////////////////
- LtoG(id[0],id[1],id[2],l,g);
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::LtoG(const Int_t index,const Double_t *l,Double_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the detector
-// index number (see GetModuleIndex and GetModuleId). The local coordinates
-// are entered by the three element Double_t array l and the global
-// coordinate values are returned by the three element Double_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z,
-// similarly for g.
-////////////////////////////////////////////////////////////////////////
- Int_t lay,lad,det;
-
- this->GetModuleId(index,lay,lad,det);
-
- LtoG(lay,lad,det,l,g);
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::LtoG(Int_t lay,Int_t lad,Int_t det,
- const Float_t *l,Float_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The local coordinates are entered by
-// the three element Float_t array l and the global coordinate values
-// are returned by the three element Float_t array g. The order of the
-// three elements are l[0]=x, l[1]=y, and l[2]=z, similarly for g.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- Double_t gd[3],ld[3];
-
- for(i=0;i<3;i++) ld[i] = (Double_t) l[i];
- LtoG(lay,lad,det,(Double_t *)ld,(Double_t *)gd);
- for(i=0;i<3;i++) g[i] = (Float_t) gd[i];
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::LtoG(const Int_t *id,const Float_t *l,Float_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the three
-// element array Id containing as it's three elements Id[0]=layer,
-// Id[1]=ladder, and Id[2]=detector numbers. The local coordinates
-// are entered by the three element Float_t array l and the global
-// coordinate values are returned by the three element Float_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z,
-// similarly for g.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- Double_t gd[3],ld[3];
-
- for(i=0;i<3;i++) ld[i] = (Double_t) l[i];
- LtoG(id[0],id[1],id[2],(Double_t *)ld,(Double_t *)gd);
- for(i=0;i<3;i++) g[i] = (Float_t) gd[i];
+//______________________________________________________________________
+AliITSgeom::AliITSgeom():
+TObject(),
+fVersion("GEANT"),// Transformation version.
+fTrans(0), // Flag to keep track of which transformation
+fNmodules(0), // The total number of modules
+fNlayers(0), // The number of layers.
+fNlad(), //[] Array of the number of ladders/layer(layer)
+fNdet(), //[] Array of the number of detector/ladder(layer)
+fGm(0,0), // Structure of translation. and rotation.
+fShape(0,0) // Array of shapes and detector information.
+{
+ // The default constructor for the AliITSgeom class. It, by default,
+ // sets fNlayers to zero and zeros all pointers.
+ // Do not allocate anything zero everything.
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // a zeroed AliITSgeom object.
+
+ fGm.SetOwner(kTRUE);
+ fShape.SetOwner(kTRUE);
return;
}
-//________________________________________________________________________
-void AliITSgeom::LtoG(const Int_t index,const Float_t *l,Float_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the detector
-// index number (see GetModuleIndex and GetModuleId). The local coordinates
-// are entered by the three element Float_t array l and the global
-// coordinate values are returned by the three element Float_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z,
-// similarly for g.
-////////////////////////////////////////////////////////////////////////
- Int_t i,lay,lad,det;
- Double_t gd[3],ld[3];
-
- this->GetModuleId(index,lay,lad,det);
- for(i=0;i<3;i++) ld[i] = (Double_t) l[i];
- LtoG(lay,lad,det,(Double_t *)ld,(Double_t *)gd);
- for(i=0;i<3;i++) g[i] = (Float_t) gd[i];
- return;
-}
//______________________________________________________________________
-void AliITSgeom::LtoL(const Int_t *id1,const Int_t *id2,
- Double_t *l1,Double_t *l2){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to a different local active volume detector Cartesian coordinate
-// transformation. The original local detector coordinate system is determined
-// by the detector array id1, id1[0]=layer, id1[1]=ladder, and id1[2]=detector
-// and the new coordinate system is determined by the detector array id2,
-// id2[0]=layer, id2[1]=ladder, and id2[2]=detector. The original local
-// coordinates are entered by the three element Double_t array l1 and the
-// other new local coordinate values are returned by the three element
-// Double_t array l2. The order of the three elements are l1[0]=x, l1[1]=y,
-// and l1[2]=z, similarly for l2.
-////////////////////////////////////////////////////////////////////////
- Double_t g[3];
-
- LtoG(id1,l1,g);
- GtoL(id2,g,l2);
+AliITSgeom::AliITSgeom(Int_t itype,Int_t nlayers,const Int_t *nlads,
+ const Int_t *ndets,Int_t mods):
+TObject(),
+fVersion("GEANT"), // Transformation version.
+fTrans(itype), // Flag to keep track of which transformation
+fNmodules(mods), // The total number of modules
+fNlayers(nlayers), // The number of layers.
+fNlad(nlayers,nlads),//[] Array of the number of ladders/layer(layer)
+fNdet(nlayers,ndets),//[] Array of the number of detector/ladder(layer)
+fGm(mods,0), // Structure of translation. and rotation.
+fShape(5,0) // Array of shapes and detector information.
+{
+ // A simple constructor to set basic geometry class variables
+ // Inputs:
+ // Int_t itype the type of transformation kept.
+ // bit 0 => Standard GEANT
+ // bit 1 => ITS tracking
+ // bit 2 => A change in the coordinate system
+ // has been made. others are still to be defined
+ // as needed.
+ // Int_t nlayers The number of ITS layers also set the size of
+ // the arrays
+ // Int_t *nlads an array of the number of ladders for each
+ // layer. This array must be nlayers long.
+ // Int_t *ndets an array of the number of detectors per ladder
+ // for each layer. This array must be nlayers long.
+ // Int_t mods The number of modules. Typically the sum of all the
+ // detectors on every layer and ladder.
+ // Outputs:
+ // none
+ // Return:
+ // A properly inilized AliITSgeom object.
+
+ fGm.SetOwner(kTRUE);
+ fShape.SetOwner(kTRUE);
return;
}
//______________________________________________________________________
-void AliITSgeom::LtoL(const Int_t index1,const Int_t index2,
- Double_t *l1,Double_t *l2){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// coordinate to a different local active volume detector Cartesian coordinate
-// transformation. The original local detector coordinate system is determined
-// by the detector index number index1, and the new coordinate system is
-// determined by the detector index number index2, (see GetModuleIndex and
-// GetModuleId). The original local coordinates are entered by the three
-// element Double_t array l1 and the other new local coordinate values are
-// returned by the three element Double_t array l2. The order of the three
-// elements are l1[0]=x, l1[1]=y, and l1[2]=z, similarly for l2.
-////////////////////////////////////////////////////////////////////////
- Double_t g[3];
-
- LtoG(index1,l1,g);
- GtoL(index2,g,l2);
+void AliITSgeom::Init(Int_t itype,Int_t nlayers,const Int_t *nlads,
+ const Int_t *ndets,Int_t mods){
+ // A simple Inilizer to set basic geometry class variables
+ // Inputs:
+ // Int_t itype the type of transformation kept.
+ // bit 0 => Standard GEANT
+ // bit 1 => ITS tracking
+ // bit 2 => A change in the coordinate system
+ // has been made. others are still to be defined
+ // as needed.
+ // Int_t nlayers The number of ITS layers also set the size of
+ // the arrays
+ // Int_t *nlads an array of the number of ladders for each
+ // layer. This array must be nlayers long.
+ // Int_t *ndets an array of the number of detectors per ladder
+ // for each layer. This array must be nlayers long.
+ // Int_t mods The number of modules. Typically the sum of all the
+ // detectors on every layer and ladder.
+ // Outputs:
+ // none
+ // Return:
+ // A properly inilized AliITSgeom object.
+
+ fVersion = "GEANT"; // Transformation version.
+ fTrans = itype; // Flag to keep track of which transformation
+ fNmodules = mods; // The total number of modules
+ fNlayers = nlayers; // The number of layers.
+ fNlad.Set(nlayers,nlads);//[] Array of the number of ladders/layer(layer)
+ fNdet.Set(nlayers,ndets);//[] Array of the number of detector/ladder(layer)
+ fGm.Clear();
+ fGm.Expand(mods); // Structure of translation. and rotation.
+ fGm.SetOwner(kTRUE);
+ fShape.Clear();
+ fShape.Expand(5); // Array of shapes and detector information.
+ fShape.SetOwner(kTRUE);
return;
}
-//________________________________________________________________________
-void AliITSgeom::GtoLMomentum(Int_t lay,Int_t lad,Int_t det,
- const Double_t *g,Double_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the global ALICE Cartesian momentum
-// to local active volume detector Cartesian momentum transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The global momentums are entered by
-// the three element Double_t array g and the local momentums values
-// are returned by the three element Double_t array l. The order of the
-// three elements are g[0]=x, g[1]=y, and g[2]=z, similarly for l.
-////////////////////////////////////////////////////////////////////////
- Double_t px,py,pz;
- AliITSgeomS *gl;
-
- lay--; lad--; det--;
- gl = &(fGm[lay][fNdet[lay]*lad+det]);
-
- px = g[0];
- py = g[1];
- pz = g[2];
- l[0] = gl->fr[0]*px + gl->fr[1]*py + gl->fr[2]*pz;
- l[1] = gl->fr[3]*px + gl->fr[4]*py + gl->fr[5]*pz;
- l[2] = gl->fr[6]*px + gl->fr[7]*py + gl->fr[8]*pz;
- return;
+//______________________________________________________________________
+void AliITSgeom::CreateMatrix(Int_t mod,Int_t lay,Int_t lad,Int_t det,
+ AliITSDetector idet,const Double_t tran[3],
+ const Double_t rot[10]){
+ // Given the translation vector tran[3] and the rotation matrix rot[1],
+ // this function creates and adds to the TObject Array fGm the
+ // AliITSgeomMatrix object.
+ // The rot[10] matrix is set up like:
+ /* / rot[0] rot[1] rot[2] \
+ // | rot[3] rot[4] rot[5] |
+ // \ rot[6] rot[7] rot[8] / if(rot[9]!=0) then the Identity matrix
+ // is used regardless of the values in rot[0]-rot[8].
+ */
+ // Inputs:
+ // Int_t mod The module number. The location in TObjArray
+ // Int_t lay The layer where this module is
+ // Int_t lad On which ladder this module is
+ // Int_t det Which detector on this ladder this module is
+ // AliITSDetector idet The type of detector see AliITSgeom.h
+ // Double_t tran[3] The translation vector
+ // Double_t rot[10] The rotation matrix.
+ // Outputs:
+ // none
+ // Return:
+ // none.
+ Int_t id[3];
+ Double_t r[3][3] = {{1.0,0.0,0.0},{0.0,1.0,0.0},{0.0,0.0,1.0}};
+
+ if(mod<0||mod>=fGm.GetSize()){
+ Error("CreateMatrix","mod=%d is out of bounds max value=%d",mod,
+ fGm.GetSize());
+ return;
+ } // end if
+ delete fGm.At(mod);
+ id[0] = lay; id[1] = lad; id[2] = det;
+ if(rot[9]!=0.0) { // null rotation
+ r[0][0] = rot[0]; r[0][1] = rot[1]; r[0][2] = rot[2];
+ r[1][0] = rot[3]; r[1][1] = rot[4]; r[1][2] = rot[5];
+ r[2][0] = rot[6]; r[2][1] = rot[7]; r[2][2] = rot[8];
+ } // end if
+ fGm.AddAt(new AliITSgeomMatrix(idet,id,r,tran),mod);
}
-//________________________________________________________________________
-void AliITSgeom::GtoLMomentum(Int_t lay,Int_t lad,Int_t det,
- const Float_t *g,Float_t *l){
-////////////////////////////////////////////////////////////////////////
-// The function that does the global ALICE Cartesian momentum
-// to local active volume detector Cartesian momentum transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The global momentums are entered by
-// the three element Float_t array g and the local momentums values
-// are returned by the three element Float_t array l. The order of the
-// three elements are g[0]=x, g[1]=y, and g[2]=z, similarly for l.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- Double_t gd[3],ld[3];
+//______________________________________________________________________
+AliITSgeom::~AliITSgeom(){
+ // The destructor for the AliITSgeom class. If the arrays fNlad,
+ // fNdet, or fGm have had memory allocated to them, there pointer values
+ // are non zero, then this memory space is freed and they are set
+ // to zero. In addition, fNlayers is set to zero. The destruction of
+ // TObjArray fShape is, by default, handled by the TObjArray destructor.
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
- for(i=0;i<3;i++) gd[i] = (Double_t) g[i];
- GtoLMomentum(lay,lad,det,(Double_t *)gd,(Double_t *)ld);
- for(i=0;i<3;i++) l[i] = (Float_t) ld[i];
return;
}
-//________________________________________________________________________
-void AliITSgeom::LtoGMomentum(Int_t lay,Int_t lad,Int_t det,
- const Double_t *l,Double_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// momentum to global ALICE Cartesian momentum transformation.
-// The local detector momentum system is determined by the layer,
-// ladder, and detector numbers. The local momentums are entered by
-// the three element Double_t array l and the global momentum values
-// are returned by the three element Double_t array g. The order of the
-// three elements are l[0]=x, l[1]=y, and l[2]=z, similarly for g.
-////////////////////////////////////////////////////////////////////////
- Double_t px,py,pz;
- AliITSgeomS *gl;
-
- lay--; lad--; det--;
- gl = &(fGm[lay][fNdet[lay]*lad+det]);
-
- px = gl->fr[0]*l[0] + gl->fr[3]*l[1] + gl->fr[6]*l[2];
- py = gl->fr[1]*l[0] + gl->fr[4]*l[1] + gl->fr[7]*l[2];
- pz = gl->fr[2]*l[0] + gl->fr[5]*l[1] + gl->fr[8]*l[2];
- g[0] = px;
- g[1] = py;
- g[2] = pz;
- return;
-}
-//________________________________________________________________________
-void AliITSgeom::LtoGMomentum(Int_t lay,Int_t lad,Int_t det,
- const Float_t *l,Float_t *g){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// momentum to global ALICE Cartesian momentum transformation.
-// The local detector momentum system is determined by the layer,
-// ladder, and detector numbers. The local momentums are entered by
-// the three element Float_t array l and the global momentum values
-// are returned by the three element Float_t array g. The order of the
-// three elements are l[0]=x, l[1]=y, and l[2]=z, similarly for g.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- Double_t gd[3],ld[3];
+//______________________________________________________________________
+void AliITSgeom::ReadNewFile(const char *filename){
+ // It is generally preferred to define the geometry in AliITSgeom
+ // directly from the GEANT geometry, see AliITSvPPRasymm.cxx for
+ // and example. Under some circumstances this may not be possible.
+ // This function will read in a formatted file for all of the
+ // information needed to define the geometry in AliITSgeom.
+ // Unlike the older file format, this file may contain comments
+ // and the order of the data does not need to be completely
+ // respected. A file can be created using the function WriteNewFile
+ // defined below.
+ // Inputs:
+ // const char *filename The file name of the file to be read in.
+ // Outputs:
+ // none
+ // Return:
+ // none.
+ Int_t ncmd=9;
+ const char *cmda[]={"Version" ,"fTrans" ,"fNmodules",
+ "fNlayers" ,"fNladers","fNdetectors",
+ "fNDetectorTypes","fShape" ,"Matrix"};
+ Int_t i,j,lNdetTypes,ldet;
+ char cmd[20],c;
+ AliITSgeomMatrix *m=0;
+ ifstream *fp=0;
+ char *filtmp=0;
+ Bool_t arrayGm = kFALSE, arrayShape = kFALSE;
+
+ filtmp = gSystem->ExpandPathName(filename);
+ AliInfo(Form("Reading New .det file %s",filtmp));
+ fp = new ifstream(filtmp,ios::in); // open file to write
+ while(fp->get(c)!=NULL){ // for ever loop
+ if(c==' ') continue; // remove blanks
+ if(c=='\n') continue;
+ if(c=='#' || c=='!') {while(fp->get(c)) if(c=='\n') break; continue;}
+ if(c=='/'){
+ fp->get(c);{
+ if(c=='/') {while(fp->get(c)) if(c=='\n') break; continue;}
+ if(c=='*'){
+ NotYet:
+ while(fp->get(c)) if(c=='*') break;
+ fp->get(c);{
+ if(c=='/') continue;
+ goto NotYet;
+ } //
+ } // end if c=='*'
+ } // end if second /
+ } // end if first /
+ fp->putback(c);
+ *fp >> cmd;
+ for(i=0;i<ncmd;i++) if(strcmp(cmd,cmda[i])==0) break;
+ switch (i){
+ case 0: // Version
+ while(isspace(fp->peek())) fp->get(); // skip spaces
+ if(isdigit(fp->peek())){ // new TString
+ *fp >> j;
+ fVersion.Resize(j);
+ for(j=0;j<fVersion.Length();j++) *fp >> fVersion[j];
+ }else{
+ fVersion.Resize(20);
+ for(j=0;isprint(fp->peek())&&j<20;j++) *fp >> fVersion[j];
+ } // end if isdigit
+ break;
+ case 1: // fTrans
+ *fp >> fTrans;
+ break;
+ case 2: // fNModules
+ *fp >> fNmodules;
+ fGm.Clear();
+ fGm.Expand(fNmodules);
+ fGm.SetOwner(kTRUE);
+ arrayGm = kTRUE;
+ break;
+ case 3: // fNlayers
+ *fp >> fNlayers;
+ fNlad.Set(fNlayers);
+ fNdet.Set(fNlayers);
+ break;
+ case 4: // fNladers
+ for(j=0;j<fNlayers;j++) *fp >> fNlad[j];
+ break;
+ case 5: // fNdetectors
+ for(j=0;j<fNlayers;j++) *fp >> fNdet[j];
+ break;
+ case 6: // fNDetectorTypes
+ *fp >> lNdetTypes;
+ fShape.Clear();
+ fShape.Expand(lNdetTypes);
+ fShape.SetOwner(kTRUE);
+ arrayShape = kTRUE;
+ break;
+ case 7: // fShape
+ *fp >> ldet;
+ if(!arrayShape) fShape.Expand(5);
+ fShape.SetOwner(kTRUE);
+ switch (ldet){
+ case kSPD :{
+ AliITSgeomSPD *spd = new AliITSgeomSPD();
+ *fp >> *spd;
+ ReSetShape(ldet,spd);
+ } break;
+ case kSDD : case kSDDp:{
+ AliITSgeomSDD *sdd = new AliITSgeomSDD();
+ *fp >> *sdd;
+ ReSetShape(ldet,sdd);
+ }break;
+ case kSSD : case kSSDp :{
+ AliITSgeomSSD *ssd = new AliITSgeomSSD();
+ *fp >> *ssd;
+ ReSetShape(ldet,ssd);
+ }break;
+ default:{
+ AliError(Form("Unknown fShape type number=%d c=%c",ldet,c));
+ while(fp->get(c)) if(c=='\n') break; // skip to end of line.
+ }break;
+ } // end switch
+ break;
+ case 8: // Matrix
+ *fp >> ldet;
+ if(!arrayGm){
+ fGm.Clear();
+ fGm.Expand(2270);
+ arrayGm = kTRUE;
+ } // end if
+ if(ldet<0||ldet>=fGm.GetSize()){
+ Error("ReadNewFile","ldet<0||ldet>=fGm.GetSize()=%d",
+ ldet,fGm.GetSize());
+ return;
+ } // end if
+ delete fGm.At(ldet);
+ fGm.AddAt((TObject*)new AliITSgeomMatrix(),ldet);
+ m = (AliITSgeomMatrix*) fGm.At(ldet);
+ *fp >> *m;
+ m = 0;
+ break;
+ default:
+ AliError(Form("ReadNewFile","Data line i=%d c=%c",i,c));
+ while(fp->get(c)) if(c=='\n') break; // skip this line
+ break;
+ } // end switch i
+ } // end while
+ delete fp;
- for(i=0;i<3;i++) ld[i] = (Double_t) l[i];
- LtoGMomentum(lay,lad,det,(Double_t *)ld,(Double_t *)gd);
- for(i=0;i<3;i++) g[i] = (Float_t) gd[i];
return;
}
//______________________________________________________________________
-void AliITSgeom::LtoLMomentum(const Int_t *id1,const Int_t *id2,
- const Double_t *l1,Double_t *l2){
-////////////////////////////////////////////////////////////////////////
-// The function that does the local active volume detector Cartesian
-// momentum to a different local active volume detector Cartesian momentum
-// transformation. The original local detector momentum system is determined
-// by the Int_t array id1 (id1[0]=lay, id1[1]=lad, id1[2]=det). The new local
-// coordinate system id determined by the Int_t array id2. The local
-// momentums are entered by the three element Double_t array l1 and the other
-// local momentum values are returned by the three element Double_t array l2.
-// The order of the three elements are l1[0]=x, l1[1]=y, and l1[2]=z,
-// similarly for l2.
-////////////////////////////////////////////////////////////////////////
- Double_t g[3];
-
- LtoGMomentum(id1[0],id1[1],id1[2],l1,g);
- GtoLMomentum(id2[0],id2[1],id2[2],g,l2);
+void AliITSgeom::WriteNewFile(const char *filename)const{
+ // Writes AliITSgeom, AliITSgeomMatrix, and the defined
+ // AliITSgeomS*D classes to a file in a format that
+ // is more readable and commendable.
+ // Inputs:
+ // const char *filename The file name of the file to be write to.
+ // Outputs:
+ // none
+ // Return:
+ // none
+ ofstream *fp;
+ Int_t i;
+ char *filtmp;
+
+ filtmp = gSystem->ExpandPathName(filename);
+ fp = new ofstream(filtmp,ios::out); // open file to write
+ *fp << "//Comment lines begin with two //, one #, or one !" << endl;
+ *fp << "#Blank lines are skipped including /* and */ sections." << endl;
+ *fp << "!and, in principle the order of the lines is not important" <<endl;
+ *fp << "/* In AliITSgeom.h are defined an enumerated type called" << endl;
+ *fp << " AliITSDetectors These are kSPD=" << (Int_t) kSPD ;
+ *fp << ", kSDD=" << (Int_t) kSDD << ", kSSD=" << (Int_t) kSSD;
+ *fp << ", kSSDp=" << (Int_t) kSSDp << ", and kSDDp=" << (Int_t) kSDDp;
+ *fp << "*/" << endl;
+ *fp << "Version "<< fVersion.Length()<<" " << fVersion.Data() << endl;//
+ // This should be consistent
+ // with the geometry version.
+ *fp << "fTrans " << fTrans << endl;
+ *fp << "fNmodules " << fNmodules << endl;
+ *fp << "fNlayers " << fNlayers << endl;
+ *fp << "fNladers ";
+ for(i=0;i<fNlayers;i++) *fp << fNlad[i] << " ";
+ *fp << endl;
+ *fp << "fNdetectors ";
+ for(i=0;i<fNlayers;i++) *fp << fNdet[i] << " ";
+ *fp << endl;
+ *fp << "fNDetectorTypes " << fShape.GetEntriesFast() << endl;
+ for(i=0;i<fShape.GetEntriesFast();i++){
+ if(!IsShapeDefined(i)) continue; // only print out used shapes.
+ switch (i){
+ case kSPD :
+ *fp << "fShape " << (Int_t) kSPD << " ";
+ *fp << *((AliITSgeomSPD*)(fShape.At(i)));
+ break;
+ case kSDD :
+ *fp << "fShape " << (Int_t) kSDD << " ";
+ *fp << *((AliITSgeomSDD*)(fShape.At(i)));
+ break;
+ case kSSD : case kSSDp :
+ *fp << "fShape " << i << " ";
+ *fp << *((AliITSgeomSSD*)(fShape.At(i)));
+ break;
+ default:
+ Error("AliITSgeom::WriteNewFile","Unknown Shape value");
+ } // end switch (i)
+ } // end for i
+ for(i=0;i<fNmodules;i++){
+ *fp << "Matrix " << i << " ";
+ *fp << *GetGeomMatrix(i);
+ } // end for i
+ *fp << "//End of File" << endl;;
+
+ delete fp;
return;
}
//______________________________________________________________________
-void AliITSgeom::GtoLErrorMatrix(const Int_t index,Double_t **g,Double_t **l){
-////////////////////////////////////////////////////////////////////////
-// This converts an error matrix, expressed in global coordinates
-// into an error matrix expressed in local coordinates. Since the
-// translations do not change the error matrix they are not included.
-// Definition: if GtoL is l[i] = T[i][j]*g[j], then from the definition
-// of the transformation matrix above T[i][j] = fr[3*i+j]. Then for a
-// matrix l[i][l] = T[i][j]*g[j][k]*T[l][k] (sum over repeated indexes).
-// Where T[l][k] is the transpose of T[k][l].
-////////////////////////////////////////////////////////////////////////
- Double_t lR[3][3],lRt[3][3];
- Int_t lay,lad,det,i,j,k,n;
- AliITSgeomS *gl;
-
- GetModuleId(index,lay,lad,det);
- lay--;lad--;det--;
- gl = &(fGm[lay][fNdet[lay]*lad+det]);
-
- for(i=0;i<3;i++)for(j=0;j<3;j++){
- lR[i][j] = lRt[j][i] = gl->fr[3*i+j];
- } // end for i,j
-
- for(i=0;i<3;i++)for(j=0;j<3;j++)for(k=0;k<3;k++)for(n=0;n<3;n++){
- l[i][n] = lR[i][j]*g[j][k]*lRt[k][n];
- } // end for i,j,k,l
- return;
+AliITSgeom::AliITSgeom(const char *filename):
+TObject(),
+fVersion("test"),// Transformation version.
+fTrans(0), // Flag to keep track of which transformation
+fNmodules(0), // The total number of modules
+fNlayers(0), // The number of layers.
+fNlad(), // TArrayI of the number of ladders/layer(layer)
+fNdet(), // TArrayI of the number of detector/ladder(layer)
+fGm(0,0), // TObjArray Structure of translation. and rotation.
+fShape(0,0) // TObjArray of detector geom.
+{
+ // The constructor for the AliITSgeom class. All of the data to fill
+ // this structure is read in from the file given my the input filename.
+ // Inputs:
+ // const char *filename The file name of the file to be read in.
+ // Outputs:
+ // none
+ // Return:
+ // An AliITSgeom class initialized from a file.
+ FILE *pf=0;
+ Int_t i,lm=0,id[3];
+ Int_t l,a,d;
+ Float_t x,y,z,o,p,q,r,s,t;
+ Double_t rot6[6],tran[3];
+ char buf[200],*buff=0; // input character buffer;
+ char *filtmp;
+
+ filtmp = gSystem->ExpandPathName(filename);
+ Info("AliITSgeom","reading old .det file %s",filtmp);
+ fVersion="GEANT5";
+ pf = fopen(filtmp,"r");
+
+ fNlayers = 6; // set default number of ladders
+ TryAgain:
+ fNlad.Set(fNlayers);
+ fNdet.Set(fNlayers);
+ fNmodules = 0;
+ // find the number of ladders and detectors in this geometry.
+ for(i=0;i<fNlayers;i++){fNlad[i]=fNdet[i]=0;} // zero out arrays
+ while(fgets(buf,200,pf)!=NULL){ // for ever loop
+ for(i=0;i<200;i++)if(buf[i]!=' '){ // remove blank spaces.
+ buff = &(buf[i]);
+ break;
+ } // end for i
+ // remove blank lines and comments.
+ if(buff[0]=='\n'||buff[0]=='#'||buff[0]=='!'||
+ (buff[0]=='/'&&buff[1]=='/')) continue;
+ if(isalpha(buff[0])) { // must be the new file formated file.
+ fclose(pf);
+ ReadNewFile(filename);
+ return;
+ } // end if isalpha(buff[0])
+ sscanf(buff,"%d %d %d %f %f %f %f %f %f %f %f %f",
+ &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
+ if(l>lm) lm = l;
+ if(l<1 || l>fNlayers) {
+ printf("error in file %s layer=%d min. is 1 max is %d"
+ " Trying new format\n",filename,l,fNlayers);
+ fclose(pf);
+ ReadNewFile(filename);
+ return;
+ //continue;
+ }// end if l
+ fNmodules++;
+ if(l<=fNlayers&&fNlad[l-1]<a) fNlad[l-1] = a;
+ if(l<=fNlayers&&fNdet[l-1]<d) fNdet[l-1] = d;
+ } // end while ever loop
+ if(lm>fNlayers){
+ fNlayers = lm;
+ goto TryAgain;
+ } // end if lm>fNlayers
+ // counted the number of ladders and detectors now allocate space.
+ fGm.Expand(fNmodules);
+ fGm.SetOwner(kTRUE);
+ fShape.SetOwner(kTRUE);
+
+ // Set up Shapes for a default configuration of 6 layers.
+ fTrans = 0; // standard GEANT global/local coordinate system.
+ // prepare to read in transforms
+ lm = 0; // reuse lm as counter of modules.
+ rewind(pf); // start over reading file
+ while(fgets(buf,200,pf)!=NULL){ // for ever loop
+ for(i=0;i<200;i++)if(buf[i]!=' '){ // remove blank spaces.
+ buff = &(buf[i]);
+ break;
+ } // end for i
+ // remove blank lines and comments.
+ if(buff[0]=='\n'||buff[0]=='#'||buff[0]=='!'||
+ (buff[0]=='/'&&buff[1]=='/')) continue;
+ x = y = z = o = p = q = r = s = t = 0.0;
+ sscanf(buff,"%d %d %d %f %f %f %f %f %f %f %f %f",
+ &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
+ if(l<1 || l>fNlayers) {
+ Warning("AliITSgeom","error in file %s layer=%d"
+ " min. is 1 max is %d",filename,l,fNlayers);
+ continue;
+ }// end if l
+ id[0] = l;id[1] = a;id[2] = d;
+ tran[0] = tran[1] = tran[2] = 0.0;
+ tran[0] = (Double_t)x;tran[1] = (Double_t)y;tran[2] = (Double_t)z;
+ rot6[0] = rot6[1] = rot6[2] = rot6[3] = rot6[4] = rot6[5] =0.0;
+ rot6[0] = (Double_t)o;rot6[1] = (Double_t)p;rot6[2] = (Double_t)q;
+ rot6[3] = (Double_t)r;rot6[4] = (Double_t)s;rot6[5] = (Double_t)t;
+ if(lm<0||lm>=fGm.GetSize()){
+ Error("AliITSgeom(filename)","lm<0||lm>=fGm.GetSize()=%d",
+ lm,fGm.GetSize());
+ return;
+ } // end if
+ switch (l){
+ case 1: case 2: // layer 1 or2 SPD
+ fGm.AddAt(new AliITSgeomMatrix(rot6,kSPD,id,tran),lm++);
+ break;
+ case 3: case 4: // layer 3 or 4 SDD
+ fGm.AddAt(new AliITSgeomMatrix(rot6,kSDD,id,tran),lm++);
+ break;
+ case 5: case 6: // layer 5 or 6 SSD
+ fGm.AddAt(new AliITSgeomMatrix(rot6,kSSD,id,tran),lm++);
+ break;
+ } // end switch
+ } // end while ever loop
+ fclose(pf);
}
//______________________________________________________________________
-void AliITSgeom::LtoGErrorMatrix(const Int_t index,Double_t **l,Double_t **g){
-////////////////////////////////////////////////////////////////////////
-// This converts an error matrix, expressed in local coordinates
-// into an error matrix expressed in global coordinates. Since the
-// translations do not change the error matrix they are not included.
-// Definition: if GtoL is l[i] = T[i][j]*g[j], then from the definition
-// of the transformation matrix above T[i][j] = fr[3*i+j]. Then for a
-// matrix g[i][l] = T[j][i]*l[j][k]*T[k][l] (sum over repeated indexes).
-// Where T[j][i] is the transpose of T[i][j].
-////////////////////////////////////////////////////////////////////////
- Double_t lR[3][3],lRt[3][3];
- Int_t lay,lad,det,i,j,k,n;
- AliITSgeomS *gl;
-
- GetModuleId(index,lay,lad,det);
- lay--;lad--;det--;
- gl = &(fGm[lay][fNdet[lay]*lad+det]);
-
- for(i=0;i<3;i++)for(j=0;j<3;j++){
- lR[i][j] = lRt[j][i] = gl->fr[3*i+j];
- } // end for i,j
-
- for(i=0;i<3;i++)for(j=0;j<3;j++)for(k=0;k<3;k++)for(n=0;n<3;n++){
- g[i][n] = lRt[i][j]*l[j][k]*lR[k][n];
- } // end for i,j,k,l
+AliITSgeom::AliITSgeom(const AliITSgeom &source) :
+TObject(source),
+fVersion(source.fVersion), // Transformation version.
+fTrans(source.fTrans), // Flag to keep track of which transformation
+fNmodules(source.fNmodules),// The total number of modules
+fNlayers(source.fNlayers), // The number of layers.
+fNlad(source.fNlad), // Array of the number of ladders/layer(layer)
+fNdet(source.fNdet), // Array of the number of detector/ladder(layer)
+fGm(source.fGm.GetSize(),source.fGm.LowerBound()),// Structure of
+ // translation and rotation.
+fShape(source.fShape.GetSize(),source.fShape.LowerBound())// Array of shapes
+ // and detector information.
+{
+ // The copy constructor for the AliITSgeom class. It calls the
+ // = operator function. See the = operator function for more details.
+ // Inputs:
+ // AliITSgeom &source The AliITSgeom class with which to make this
+ // a copy of.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,n;
+
+ n = source.fGm.GetLast()+1;
+ for(i=source.fGm.LowerBound();i<n;i++){
+ fGm.AddAt(new AliITSgeomMatrix(*((AliITSgeomMatrix*)(
+ source.fGm.At(i)))),i);
+ } // end for i
+ fGm.SetOwner(kTRUE);
+ n = source.fShape.GetLast()+1;
+ for(i=source.fShape.LowerBound();i<n;i++){
+ switch ((AliITSDetector)i){
+ case kSPD :{
+ fShape.AddAt(new AliITSgeomSPD(*((AliITSgeomSPD*)(
+ source.fShape.At(i)))),i);
+ } break;
+ case kSDD : case kSDDp:{
+ fShape.AddAt(new AliITSgeomSDD(*((AliITSgeomSDD*)(
+ source.fShape.At(i)))),i);
+ }break;
+ case kSSD : case kSSDp :{
+ fShape.AddAt(new AliITSgeomSSD(*((AliITSgeomSSD*)(
+ source.fShape.At(i)))),i);
+ }break;
+ default:{
+ AliError(Form("Unknown fShape type number=%d",i));
+ }break;
+ } // end switch
+ } // end for i
+ fShape.SetOwner(kTRUE);
return;
}
//______________________________________________________________________
-void AliITSgeom::LtoLErrorMatrix(const Int_t index1,const Int_t index2,
- Double_t **l1,Double_t **l2){
-////////////////////////////////////////////////////////////////////////
-// This converts an error matrix, expressed in one local coordinates
-// into an error matrix expressed in different local coordinates. Since
-// the translations do not change the error matrix they are not included.
-// This is done by going through the global coordinate system for
-// simplicity and constancy.
-////////////////////////////////////////////////////////////////////////
- Double_t g[3][3];
+AliITSgeom& AliITSgeom::operator=(const AliITSgeom &source){
+ // The = operator function for the AliITSgeom class. It makes an
+ // independent copy of the class in such a way that any changes made
+ // to the copied class will not affect the source class in any way.
+ // This is required for many ITS alignment studies where the copied
+ // class is then modified by introducing some misalignment.
+ // Inputs:
+ // AliITSgeom &source The AliITSgeom class with which to make this
+ // a copy of.
+ // Outputs:
+ // none.
+ // Return:
+ // *this The a new copy of source.
+ Int_t i;
- this->LtoGErrorMatrix(index1,l1,(Double_t **)g);
- this->GtoLErrorMatrix(index2,(Double_t **)g,l2);
- return;
+ if(this == &source) return *this; // don't assign to ones self.
+
+ // if there is an old structure allocated delete it first.
+ this->fGm.Clear();
+ this->fShape.Clear();
+
+ this->fVersion = source.fVersion;
+ this->fTrans = source.fTrans;
+ this->fNmodules = source.fNmodules;
+ this->fNlayers = source.fNlayers;
+ this->fNlad = source.fNlad;
+ this->fNdet = source.fNdet;
+ this->fGm.Expand(this->fNmodules);
+ for(i=source.fGm.LowerBound();i<source.fGm.GetLast();i++){
+ fGm.AddAt(new AliITSgeomMatrix(*((AliITSgeomMatrix*)(
+ source.fGm.At(i)))),i);
+ } // end for i
+ fGm.SetOwner(kTRUE);
+ this->fShape.Expand(source.fShape.GetEntriesFast());
+ for(i=source.fShape.LowerBound();i<source.fShape.GetLast();i++){
+ switch ((AliITSDetector)i){
+ case kSPD :{
+ fShape.AddAt(new AliITSgeomSPD(*((AliITSgeomSPD*)(
+ source.fShape.At(i)))),i);
+ } break;
+ case kSDD : case kSDDp:{
+ fShape.AddAt(new AliITSgeomSDD(*((AliITSgeomSDD*)(
+ source.fShape.At(i)))),i);
+ }break;
+ case kSSD : case kSSDp :{
+ fShape.AddAt(new AliITSgeomSSD(*((AliITSgeomSSD*)(
+ source.fShape.At(i)))),i);
+ }break;
+ default:{
+ AliError(Form("Unknown fShape type number=%d",i));
+ }break;
+ } // end switch
+ } // end for i
+ fShape.SetOwner(kTRUE);
+ return *this;
}
//______________________________________________________________________
-Int_t AliITSgeom::GetModuleIndex(Int_t lay,Int_t lad,Int_t det){
-////////////////////////////////////////////////////////////////////////
-// This routine computes the module index number from the layer,
-// ladder, and detector numbers. The number of ladders and detectors
-// per layer is determined when this geometry package is constructed,
-// see AliITSgeom(const char *filename) for specifics.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k;
+Int_t AliITSgeom::GetModuleIndex(Int_t lay,Int_t lad,Int_t det)const{
+ // This routine computes the module index number from the layer,
+ // ladder, and detector numbers. The number of ladders and detectors
+ // per layer is determined when this geometry package is constructed,
+ // see AliITSgeom(const char *filename) for specifics.
+ // Inputs:
+ // Int_t lay The layer number. Starting from 1.
+ // Int_t lad The ladder number. Starting from 1.
+ // Int_t det The detector number. Starting from 1.
+ // Outputs:
+ // none.
+ // Return:
+ // the module index number, starting from zero.
+ Int_t i,j,k,id[3];
i = fNdet[lay-1] * (lad-1) + det - 1;
j = 0;
for(k=0;k<lay-1;k++) j += fNdet[k]*fNlad[k];
- return (i+j);
+ i = i+j;
+ if(i>=fNmodules) return -1;
+ GetGeomMatrix(i)->GetIndex(id);
+ if(id[0]==lay&&id[1]==lad&&id[2]==det) return i;
+ // Array of modules fGm is not in expected order. Search for this index
+ for(i=0;i<fNmodules;i++){
+ GetGeomMatrix(i)->GetIndex(id);
+ if(id[0]==lay&&id[1]==lad&&id[2]==det) return i;
+ } // end for i
+ // This layer ladder and detector combination does not exist return -1.
+ return -1;
}
-//___________________________________________________________________________
-void AliITSgeom::GetModuleId(Int_t index,Int_t &lay,Int_t &lad,Int_t &det){
-////////////////////////////////////////////////////////////////////////
-// This routine computes the layer, ladder and detector number
-// given the module index number. The number of ladders and detectors
-// per layer is determined when this geometry package is constructed,
-// see AliITSgeom(const char *filename) for specifics.
-////////////////////////////////////////////////////////////////////////
+//______________________________________________________________________
+void AliITSgeom::GetModuleId(Int_t index,Int_t &lay,Int_t &lad,Int_t &det)
+const{
+ // This routine computes the layer, ladder and detector number
+ // given the module index number. The number of ladders and detectors
+ // per layer is determined when this geometry package is constructed,
+ // see AliITSgeom(const char *filename) for specifics.
+ // Inputs:
+ // Int_t index The module index number, starting from zero.
+ // Outputs:
+ // Int_t lay The layer number. Starting from 1.
+ // Int_t lad The ladder number. Starting from 1.
+ // Int_t det The detector number. Starting from 1.
+ // Return:
+ // none.
+ Int_t id[3];
+ AliITSgeomMatrix *g = GetGeomMatrix(index);
+
+ if (g == 0x0){
+ Error("GetModuleId","Can not get GeoMatrix for index = %d",index);
+ lay = -1; lad = -1; det = -1;
+ }else{
+ g->GetIndex(id);
+ lay = id[0]; lad = id[1]; det = id[2];
+ }// End if
+ return;
+ // The old way kept for posterity.
+/*
Int_t i,j,k;
-
j = 0;
for(k=0;k<fNlayers;k++){
j += fNdet[k]*fNlad[k];
lad = k+1;
det = 1+i-fNdet[lay-1]*k;
return;
+*/
}
-//___________________________________________________________________________
-void AliITSgeom::GetRotMatrix(Int_t lay,Int_t lad,Int_t det,Double_t *mat){
-////////////////////////////////////////////////////////////////////////
-// Returns, in the Double_t array pointed to by mat, the full rotation
-// matrix for the give detector defined by layer, ladder, and detector.
-// It returns all nine elements of fr in the AliITSgeomS structure. See the
-// description of the AliITSgeomS structure for further details of this
-// rotation matrix.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- AliITSgeomS *g;
-
- lay--; lad--; det--; // shift to base 0
- g = &(fGm[lay][fNdet[lay]*lad+det]);
- for(i=0;i<9;i++) mat[i] = g->fr[i];
- return;
-}
-//___________________________________________________________________________
-void AliITSgeom::GetRotMatrix(Int_t index,Double_t *mat){
-////////////////////////////////////////////////////////////////////////
-// Returns, in the Double_t array pointed to by mat, the full rotation
-// matrix for the give detector defined by the module index number.
-// It returns all nine elements of fr in the AliITSgeomS structure. See the
-// description of the AliITSgeomS structure for further details of this
-// rotation matrix.
-////////////////////////////////////////////////////////////////////////
- Int_t lay,lad,det;
-
- this->GetModuleId(index,lay,lad,det);
- GetRotMatrix(lay,lad,det,mat);
- return;
+//______________________________________________________________________
+Int_t AliITSgeom::GetNDetTypes(Int_t &max)const{
+ // Finds and returns the number of detector types used and the
+ // maximum detector type value. Only counts id >=0 (no undefined
+ // values. See AliITSgeom.h for list of AliITSDetecor enumerated types.
+ // Inputs:
+ // none.
+ // Outputs:
+ // The maximum detector type used
+ // Return:
+ // The number of detector types used
+ Int_t i,*n,id;
+
+ max = -1;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>max) max=id;
+ } // end for i
+ n = new Int_t[max+1];
+ for(i=0;i<max;i++) n[i] = 0;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>-1)n[id]++; // note id=-1 => undefined.
+ } // end for i
+ id = 0;
+ for(i=0;i<max;i++) if(n[i]!=0) id++;
+ delete[] n;
+ return id+1;
}
-//___________________________________________________________________________
-void AliITSgeom::GetRotMatrix(Int_t lay,Int_t lad,Int_t det,Float_t *mat){
-////////////////////////////////////////////////////////////////////////
-// Returns, in the Float_t array pointed to by mat, the full rotation
-// matrix for the give detector defined by layer, ladder, and detector.
-// It returns all nine elements of fr in the AliITSgeomS structure. See the
-// description of the AliITSgeomS structure for further details of this
-// rotation matrix.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
- Double_t matd[9];
-
- GetRotMatrix(lay,lad,det,(Double_t *)matd);
- for(i=0;i<9;i++) mat[i] = (Float_t) matd[i];
- return;
+//______________________________________________________________________
+Int_t AliITSgeom::GetNDetTypes(TArrayI &maxs,AliITSDetector *types)const{
+ // Finds and returns the number of detector types used and the
+ // number of each detector type. Only counts id >=0 (no undefined
+ // values. See AliITSgeom.h for list of AliITSDetecor enumerated types.
+ // Inputs:
+ // none.
+ // Outputs:
+ // The maximum detector type used
+ // Return:
+ // The number of detector types used
+ Int_t i,j,*n,id,max;
+
+ max = -1;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>max) max=id;
+ } // end for i
+ n = new Int_t[max+1];
+ for(i=0;i<max;i++) n[i] = 0;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>-1)n[id]++; // note id=-1 => undefined.
+ } // end for i
+ id = 0;
+ for(i=0;i<=max;i++) if(n[i]!=0) id++;
+ maxs.Set(id);
+ j = 0;
+ for(i=0;i<=max;i++) if(n[i]!=0){
+ maxs[j] = n[i];
+ types[j++] = (AliITSDetector) i;
+ } // end for i/end if
+ delete[] n;
+ return id;
}
-
-//___________________________________________________________________________
-void AliITSgeom::GetRotMatrix(Int_t index,Float_t *mat){
-////////////////////////////////////////////////////////////////////////
-// Returns, in the Float_t array pointed to by mat, the full rotation
-// matrix for the give detector defined by module index number.
-// It returns all nine elements of fr in the AliITSgeomS structure. See the
-// description of the AliITSgeomS structure for further details of this
-// rotation matrix.
-////////////////////////////////////////////////////////////////////////
- Int_t i,lay,lad,det;
- Double_t matd[9];
-
- this->GetModuleId(index,lay,lad,det);
- GetRotMatrix(lay,lad,det,(Double_t *)matd);
- for(i=0;i<9;i++) mat[i] = (Float_t) matd[i];
- return;
+//______________________________________________________________________
+Int_t AliITSgeom::GetStartDet(Int_t dtype)const{
+ // returns the starting module index value for a give type of detector id.
+ // This assumes that the detector types are different on different layers
+ // and that they are not mixed up.
+ // Inputs:
+ // Int_t dtype A detector type number. 0 for SPD, 1 for SDD,
+ // and 2 for SSD.
+ // Outputs:
+ // none.
+ // Return:
+ // the module index for the first occurrence of that detector type.
+
+ switch(dtype){
+ case 0:
+ return GetModuleIndex(1,1,1);
+ break;
+ case 1:
+ return GetModuleIndex(3,1,1);
+ break;
+ case 2:
+ return GetModuleIndex(5,1,1);
+ break;
+ default:
+ Warning("GetStartDet","undefined detector type %d",dtype);
+ return 0;
+ } // end switch
+
+ Warning("GetStartDet","undefined detector type %d",dtype);
+ return 0;
}
-
-//___________________________________________________________________________
-Int_t AliITSgeom::GetStartDet(Int_t id){
- /////////////////////////////////////////////////////////////////////////
- // returns the starting module index value for a give type of detector id
- /////////////////////////////////////////////////////////////////////////
- Int_t first;
- switch(id)
- {
- case 0:
- first = GetModuleIndex(1,1,1);
- break;
- case 1:
- first = GetModuleIndex(3,1,1);
- break;
- case 2:
- first = GetModuleIndex(5,1,1);
- break;
- default:
- printf("<AliITSgeom::GetFirstDet> undefined detector type\n");
- first = 0;
-
- }
- return first;
+//______________________________________________________________________
+Int_t AliITSgeom::GetLastDet(Int_t dtype)const{
+ // returns the last module index value for a give type of detector id.
+ // This assumes that the detector types are different on different layers
+ // and that they are not mixed up.
+ // Inputs:
+ // Int_t dtype A detector type number. 0 for SPD, 1 for SDD,
+ // and 2 for SSD.
+ // Outputs:
+ // Return:
+ // the module index for the last occurrence of that detector type.
+
+ switch((AliITSDetector)dtype){
+ case kSPD:
+ return GetModuleIndex(3,1,1)-1;
+ break;
+ case kSDD:
+ return GetModuleIndex(5,1,1)-1;
+ break;
+ case kSSD:
+ return GetIndexMax()-1;
+ break;
+ case kSSDp: case kSDDp: case kND:
+ default:
+ Warning("GetLastDet","undefined detector type %d",dtype);
+ return 0;
+ } // end switch
+
+ Warning("GetLastDet","undefined detector type %d",dtype);
+ return 0;
}
-
-//___________________________________________________________________________
-Int_t AliITSgeom::GetLastDet(Int_t id){
- /////////////////////////////////////////////////////////////////////////
- // returns the last module index value for a give type of detector id
- /////////////////////////////////////////////////////////////////////////
- Int_t last;
- switch(id)
- {
- case 0:
- last = GetLastSPD();
- break;
- case 1:
- last = GetLastSDD();
- break;
- case 2:
- last = GetLastSSD();
- break;
- default:
- printf("<AliITSgeom::GetLastDet> undefined detector type\n");
- last = 0;
- }
- return last;
+//______________________________________________________________________
+Bool_t AliITSgeom::IsInside(Int_t module,Double_t point[3])const{
+ // Determins if the give point is inside of the module as defined
+ // by this set of coordinate transforms.
+ // Inputs:
+ // Int_t module The module to be checked
+ // Double_t point[3] A 3 vector global point
+ // Outputs:
+ // none.
+ // Return:
+ // kTRUE if point is inside of module, kFALSE otherwise.
+ Double_t l[3],dx,dy,dz;
+ AliITSDetector idet = (AliITSDetector)(this->GetGeomMatrix(module)->
+ GetDetectorIndex());
+
+ this->GtoL(module,point,l);
+ switch(idet){
+ case kSPD:{
+ AliITSgeomSPD *spd = (AliITSgeomSPD*)(fShape.At((Int_t)idet));
+ dx = spd->GetDx();
+ dy = spd->GetDy();
+ dz = spd->GetDz();}
+ break;
+ case kSDD: case kSDDp:{
+ AliITSgeomSDD *sdd = (AliITSgeomSDD*)(fShape.At((Int_t)idet));
+ dx = sdd->GetDx();
+ dy = sdd->GetDy();
+ dz = sdd->GetDz();}
+ break;
+ case kSSD: case kSSDp:{
+ AliITSgeomSSD *ssd = (AliITSgeomSSD*)(fShape.At((Int_t)idet));
+ dx = ssd->GetDx();
+ dy = ssd->GetDy();
+ dz = ssd->GetDz();}
+ break;
+ default: // Detector not defined.
+ return kFALSE;
+ break;
+ }// end switch
+ if(TMath::Abs(l[0])>dx) return kFALSE;
+ if(TMath::Abs(l[2])>dz) return kFALSE;
+ if(TMath::Abs(l[1])>dy) return kFALSE;
+ return kTRUE;
}
-
-//___________________________________________________________________________
-void AliITSgeom::PrintComparison(FILE *fp,AliITSgeom *other){
-////////////////////////////////////////////////////////////////////////
-// This function was primarily created for diagnostic reasons. It
-// print to a file pointed to by the file pointer fp the difference
-// between two AliITSgeom classes. The format of the file is basicly,
-// define d? to be the difference between the same element of the two
-// classes. For example dfrx = this->fGm[i][j].frx - other->fGm[i][j].frx.
-// if(at least one of dfx0, dfy0, dfz0,dfrx,dfry,dfrz are non zero) then print
-// layer ladder detector dfx0 dfy0 dfz0 dfrx dfry dfrz
-// if(at least one of the 9 elements of dfr[] are non zero) then print
-// layer ladder detector dfr[0] dfr[1] dfr[2]
-// dfr[3] dfr[4] dfr[5]
-// dfr[6] dfr[7] dfr[8]
-// Only non zero values are printed to save space. The differences are
-// typical written to a file because there are usually a lot of numbers
-// printed out and it is usually easier to read them in some nice editor
-// rather than zooming quickly past you on a screen. fprintf is used to
-// do the printing. The fShapeIndex difference is not printed at this time.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k,l;
- Double_t xt,yt,zt,xo,yo,zo;
- Double_t rxt,ryt,rzt,rxo,ryo,rzo; // phi in radians
- AliITSgeomS *gt,*go;
- Bool_t t;
-
- for(i=0;i<this->fNlayers;i++){
- for(j=0;j<this->fNlad[i];j++) for(k=0;k<this->fNdet[i];k++){
- l = this->fNdet[i]*j+k; // resolved index
- gt = &(this->fGm[i][l]);
- go = &(other->fGm[i][l]);
- xt = gt->fx0; yt = gt->fy0; zt = gt->fz0;
- xo = go->fx0; yo = go->fy0; zo = go->fz0;
- rxt = gt->frx; ryt = gt->fry; rzt = gt->frz;
- rxo = go->frx; ryo = go->fry; rzo = go->frz;
- if(!(xt==xo&&yt==yo&&zt==zo&&rxt==rxo&&ryt==ryo&&rzt==rzo))
- fprintf(fp,"%1.1d %2.2d %2.2d dTrans=%f %f %f drot=%f %f %f\n",
- i+1,j+1,k+1,xt-xo,yt-yo,zt-zo,rxt-rxo,ryt-ryo,rzt-rzo);
- t = kFALSE;
- for(i=0;i<9;i++) t = gt->fr[i] != go->fr[i];
- if(t){
- fprintf(fp,"%1.1d %2.2d %2.2d dfr= %e %e %e\n",i+1,j+1,k+1,
- gt->fr[0]-go->fr[0],gt->fr[1]-go->fr[1],gt->fr[2]-go->fr[2]);
- fprintf(fp," dfr= %e %e %e\n",
- gt->fr[3]-go->fr[3],gt->fr[4]-go->fr[4],gt->fr[5]-go->fr[5]);
- fprintf(fp," dfr= %e %e %e\n",
- gt->fr[6]-go->fr[6],gt->fr[7]-go->fr[7],gt->fr[8]-go->fr[8]);
- }
- } // end for j,k
- } // end for i
- return;
+//______________________________________________________________________
+void AliITSgeom::PrintComparison(FILE *fp,AliITSgeom *other)const{
+ // This function was primarily created for diagnostic reasons. It
+ // print to a file pointed to by the file pointer fp the difference
+ // between two AliITSgeom classes. The format of the file is basically,
+ // define d? to be the difference between the same element of the two
+ // classes. For example dfrx = this->GetGeomMatrix(i)->frx
+ // - other->GetGeomMatrix(i)->frx.
+ // if(at least one of dfx0, dfy0, dfz0,dfrx,dfry,dfrz are non zero) then
+ // print layer ladder detector dfx0 dfy0 dfz0 dfrx dfry dfrz
+ // if(at least one of the 9 elements of dfr[] are non zero) then print
+ // layer ladder detector dfr[0] dfr[1] dfr[2]
+ // dfr[3] dfr[4] dfr[5]
+ // dfr[6] dfr[7] dfr[8]
+ // Only non zero values are printed to save space. The differences are
+ // typical written to a file because there are usually a lot of numbers
+ // printed out and it is usually easier to read them in some nice editor
+ // rather than zooming quickly past you on a screen. fprintf is used to
+ // do the printing. The fShapeIndex difference is not printed at this time.
+ // Inputs:
+ // FILE *fp A file pointer to an opened file for writing
+ // in which the results of the comparison will
+ // be written.
+ // AliITSgeom *other The other AliITSgeom class to which this one is
+ // being compared.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,j,idt[3],ido[3];
+ Double_t tt[3],to[3]; // translation
+ Double_t rt[3],ro[3]; // phi in radians
+ Double_t mt[3][3],mo[3][3]; // matrices
+ AliITSgeomMatrix *gt,*go;
+ Bool_t t;
+
+ for(i=0;i<this->fNmodules;i++){
+ gt = this->GetGeomMatrix(i);
+ go = other->GetGeomMatrix(i);
+ gt->GetIndex(idt);
+ go->GetIndex(ido);
+ t = kFALSE;
+ for(i=0;i<3;i++) t = t&&idt[i]!=ido[i];
+ if(t) fprintf(fp,"%4.4d %1.1d %2.2d %2.2d %1.1d %2.2d %2.2d\n",i,
+ idt[0],idt[1],idt[2],ido[0],ido[1],ido[2]);
+ gt->GetTranslation(tt);
+ go->GetTranslation(to);
+ gt->GetAngles(rt);
+ go->GetAngles(ro);
+ t = kFALSE;
+ for(i=0;i<3;i++) t = t&&tt[i]!=to[i];
+ if(t) fprintf(fp,"%1.1d %2.2d %2.2d dTrans=%f %f %f drot=%f %f %f\n",
+ idt[0],idt[1],idt[2],
+ tt[0]-to[0],tt[1]-to[1],tt[2]-to[2],
+ rt[0]-ro[0],rt[1]-ro[1],rt[2]-ro[2]);
+ t = kFALSE;
+ gt->GetMatrix(mt);
+ go->GetMatrix(mo);
+ for(i=0;i<3;i++)for(j=0;j<3;j++) t = mt[i][j] != mo[i][j];
+ if(t){
+ fprintf(fp,"%1.1d %2.2d %2.2d dfr= %e %e %e\n",
+ idt[0],idt[1],idt[2],
+ mt[0][0]-mo[0][0],mt[0][1]-mo[0][1],mt[0][2]-mo[0][2]);
+ fprintf(fp," dfr= %e %e %e\n",
+ mt[1][0]-mo[1][0],mt[1][1]-mo[1][1],mt[1][2]-mo[1][2]);
+ fprintf(fp," dfr= %e %e %e\n",
+ mt[2][0]-mo[2][0],mt[2][1]-mo[2][1],mt[2][2]-mo[2][2]);
+ } // end if t
+ } // end for i
+ return;
}
-
-//___________________________________________________________________________
-void AliITSgeom::PrintData(FILE *fp,Int_t lay,Int_t lad,Int_t det){
-////////////////////////////////////////////////////////////////////////
-// This function prints out the coordinate transformations for
-// the particular detector defined by layer, ladder, and detector
-// to the file pointed to by the File pointer fp. fprintf statements
-// are used to print out the numbers. The format is
-// layer ladder detector Trans= fx0 fy0 fz0 rot= frx fry frz Shape=fShapeIndex
-// dfr= fr[0] fr[1] fr[2]
-// dfr= fr[3] fr[4] fr[5]
-// dfr= fr[6] fr[7] fr[8]
-// By indicating which detector, some control over the information
-// is given to the user. The output it written to the file pointed
-// to by the file pointer fp. This can be set to stdout if you want.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k,l;
- AliITSgeomS *gt;
-
- i = lay-1;
- j = lad-1;
- k = det-1;
- l = this->fNdet[i]*j+k; // resolved index
- gt = &(this->fGm[i][l]);
- fprintf(fp,"%1.1d %2.2d %2.2d Trans=%f %f %f rot=%f %f %f Shape=%d\n",
- i+1,j+1,k+1,gt->fx0,gt->fy0,gt->fz0,gt->frx,gt->fry,gt->frz,
- gt->fShapeIndex);
- fprintf(fp," dfr= %e %e %e\n",gt->fr[0],gt->fr[1],gt->fr[2]);
- fprintf(fp," dfr= %e %e %e\n",gt->fr[3],gt->fr[4],gt->fr[5]);
- fprintf(fp," dfr= %e %e %e\n",gt->fr[6],gt->fr[7],gt->fr[8]);
- return;
+//______________________________________________________________________
+void AliITSgeom::PrintData(FILE *fp,Int_t lay,Int_t lad,Int_t det)const{
+ // This function prints out the coordinate transformations for
+ // the particular detector defined by layer, ladder, and detector
+ // to the file pointed to by the File pointer fp. fprintf statements
+ // are used to print out the numbers. The format is
+ // layer ladder detector Trans= fx0 fy0 fz0 rot= frx fry frz
+ // Shape=fShapeIndex
+ // dfr= fr[0] fr[1] fr[2]
+ // dfr= fr[3] fr[4] fr[5]
+ // dfr= fr[6] fr[7] fr[8]
+ // By indicating which detector, some control over the information
+ // is given to the user. The output it written to the file pointed
+ // to by the file pointer fp. This can be set to stdout if you want.
+ // Inputs:
+ // FILE *fp A file pointer to an opened file for
+ // writing in which the results of the
+ // comparison will be written.
+ // Int_t lay The layer number. Starting from 1.
+ // Int_t lad The ladder number. Starting from 1.
+ // Int_t det The detector number. Starting from 1.
+ // Outputs:
+ // none
+ // Return:
+ // none.
+ AliITSgeomMatrix *gt;
+ Double_t t[3],r[3],m[3][3];
+
+ gt = this->GetGeomMatrix(GetModuleIndex(lay,lad,det));
+ gt->GetTranslation(t);
+ gt->GetAngles(r);
+ fprintf(fp,"%1.1d %2.2d %2.2d Trans=%f %f %f rot=%f %f %f Shape=%d\n",
+ lay,lad,det,t[0],t[1],t[2],r[0],r[1],r[2],
+ gt->GetDetectorIndex());
+ gt->GetMatrix(m);
+ fprintf(fp," dfr= %e %e %e\n",m[0][0],m[0][1],m[0][2]);
+ fprintf(fp," dfr= %e %e %e\n",m[1][0],m[1][1],m[1][2]);
+ fprintf(fp," dfr= %e %e %e\n",m[2][0],m[2][1],m[2][2]);
+ return;
}
-//___________________________________________________________________________
-ofstream & AliITSgeom::PrintGeom(ofstream &lRb){
-////////////////////////////////////////////////////////////////////////
-// The default Streamer function "written by ROOT" doesn't write out
-// the arrays referenced by pointers. Therefore, a specific Streamer function
-// has to be written. This function should not be modified but instead added
-// on to so that older versions can still be read. The proper handling of
-// the version dependent streamer function hasn't been written do to the lack
-// of finding an example at the time of writing.
-////////////////////////////////////////////////////////////////////////
- // Stream an object of class AliITSgeom.
- Int_t i,j,k;
-
- lRb.setf(ios::scientific);
- lRb << fNlayers << " ";
- for(i=0;i<fNlayers;i++) lRb << fNlad[i] << " ";
- for(i=0;i<fNlayers;i++) lRb << fNdet[i] << "\n";
- for(i=0;i<fNlayers;i++) for(j=0;j<fNlad[i]*fNdet[i];j++){
- lRb <<setprecision(16) << fGm[i][j].fShapeIndex << " ";
- lRb <<setprecision(16) << fGm[i][j].fx0 << " ";
- lRb <<setprecision(16) << fGm[i][j].fy0 << " ";
- lRb <<setprecision(16) << fGm[i][j].fz0 << " ";
- lRb <<setprecision(16) << fGm[i][j].frx << " ";
- lRb <<setprecision(16) << fGm[i][j].fry << " ";
- lRb <<setprecision(16) << fGm[i][j].frz << "\n";
- for(k=0;k<9;k++) lRb <<setprecision(16) << fGm[i][j].fr[k] << " ";
- lRb << "\n";
- } // end for i,j
-// lRb << fShape;
- return lRb;
+//______________________________________________________________________
+void AliITSgeom::PrintGeom(ostream *wb)const{
+ // Stream out an object of class AliITSgeom to standard output.
+ // Intputs:
+ // ofstream *wb The output streaming buffer.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,nshapes;
+
+ wb->setf(ios::scientific);
+ *wb << fTrans << " ";
+ *wb << fNmodules << " ";
+ *wb << fNlayers << " ";
+ for(i=0;i<fNlayers;i++) *wb << fNlad[i] << " ";
+ for(i=0;i<fNlayers;i++) *wb << fNdet[i] << "\n";
+ for(i=0;i<fNmodules;i++) {
+ *wb <<setprecision(16) << *(GetGeomMatrix(i)) << "\n";
+ } // end for i
+ nshapes = fShape.GetEntries();
+ *wb << nshapes <<endl;
+ for(i=0;i<nshapes;i++) if(fShape.At(i)!=0) switch (i){
+ case kSPD:
+ *wb << kSPD <<","<< (AliITSgeomSPD*)(fShape.At(kSPD));
+ break;
+ case kSDD:
+ *wb << kSDD <<","<< (AliITSgeomSDD*)(fShape.At(kSDD));
+ break;
+ case kSSD:
+ *wb << kSSD <<","<< (AliITSgeomSSD*)(fShape.At(kSSD));
+ break;
+ case kSSDp:
+ *wb << kSSDp <<","<< (AliITSgeomSSD*)(fShape.At(kSSDp));
+ break;
+ case kSDDp:
+ *wb << kSDDp <<","<< (AliITSgeomSDD*)(fShape.At(kSDDp));
+ break;
+ } // end for i / switch
+ return;
}
-//___________________________________________________________________________
-ifstream & AliITSgeom::ReadGeom(ifstream &lRb){
-////////////////////////////////////////////////////////////////////////
-// The default Streamer function "written by ROOT" doesn't write out
-// the arrays referenced by pointers. Therefore, a specific Streamer function
-// has to be written. This function should not be modified but instead added
-// on to so that older versions can still be read. The proper handling of
-// the version dependent streamer function hasn't been written do to the lack
-// of finding an example at the time of writing.
-////////////////////////////////////////////////////////////////////////
- // Stream an object of class AliITSgeom.
- Int_t i,j,k;
-
- lRb >> fNlayers;
- if(fNlad!=0) delete[] fNlad;
- if(fNdet!=0) delete[] fNdet;
- fNlad = new Int_t[fNlayers];
- fNdet = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) lRb >> fNlad[i];
- for(i=0;i<fNlayers;i++) lRb >> fNdet[i];
- if(fGm!=0){
- for(i=0;i<fNlayers;i++) delete[] fGm[i];
- delete[] fGm;
- } // end if fGm!=0
- fGm = new AliITSgeomS*[fNlayers];
- for(i=0;i<fNlayers;i++){
- fGm[i] = new AliITSgeomS[fNlad[i]*fNdet[i]];
- for(j=0;j<fNlad[i]*fNdet[i];j++){
- lRb >> fGm[i][j].fShapeIndex;
- lRb >> fGm[i][j].fx0;
- lRb >> fGm[i][j].fy0;
- lRb >> fGm[i][j].fz0;
- lRb >> fGm[i][j].frx;
- lRb >> fGm[i][j].fry;
- lRb >> fGm[i][j].frz;
- for(k=0;k<9;k++) lRb >> fGm[i][j].fr[k];
- } // end for j
- } // end for i
-// lRb >> fShape;
- return lRb;
+//______________________________________________________________________
+void AliITSgeom::ReadGeom(istream *rb){
+ // Stream in an object of class AliITSgeom from standard input.
+ // Intputs:
+ // ifstream *rb The input streaming buffer.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,j;
+
+ fGm.Clear();
+
+ *rb >> fTrans >> fNmodules >> fNlayers;
+ fNlad.Set(fNlayers);
+ fNdet.Set(fNlayers);
+ for(i=0;i<fNlayers;i++) *rb >> fNlad[i];
+ for(i=0;i<fNlayers;i++) *rb >> fNdet[i];
+ fGm.Expand(fNmodules);
+ fGm.SetOwner(kTRUE);
+ for(i=0;i<fNmodules;i++){
+ if(i<0||i>=fGm.GetSize()){
+ Error("ReadGeom","i<0||i>=fGm.GetSize()=%d",
+ i,fGm.GetSize());
+ return;
+ } // end if
+ fGm.AddAt(new AliITSgeomMatrix,i);
+ *rb >> *(GetGeomMatrix(i));
+ } // end for i
+ *rb >> i;
+ fShape.Expand(i);
+ fShape.SetOwner(kTRUE);
+ for(i=0;i<fShape.GetEntries();i++) {
+ *rb >> j;
+ switch (j){
+ case kSPD:{
+ AliITSgeomSPD *s = new AliITSgeomSPD();
+ *rb >> *s;
+ fShape.AddAt(s,kSPD);}
+ break;
+ case kSDD:{
+ AliITSgeomSDD *s = new AliITSgeomSDD();
+ *rb >> *s;
+ fShape.AddAt(s,kSDD);}
+ break;
+ case kSSD:{
+ AliITSgeomSSD *s = new AliITSgeomSSD();
+ *rb >> *s;
+ fShape.AddAt(s,kSSD);}
+ break;
+ case kSSDp:{
+ AliITSgeomSSD *s = new AliITSgeomSSD();
+ *rb >> *s;
+ fShape.AddAt(s,kSSDp);}
+ break;
+ case kSDDp:{
+ AliITSgeomSDD *s = new AliITSgeomSDD();
+ *rb >> *s;
+ fShape.AddAt(s,kSDDp);}
+ break;
+ } // end switch
+ } // end for i
+ return;
}
//______________________________________________________________________
// The following routines modify the transformation of "this"
// geometry transformations in a number of different ways.
//______________________________________________________________________
-void AliITSgeom::SetByAngles(Int_t lay,Int_t lad,Int_t det,
- Float_t rx,Float_t ry,Float_t rz){
-////////////////////////////////////////////////////////////////////////
-// This function computes a new rotation matrix based on the angles
-// rx, ry, and rz (in radians) for a give detector on the give ladder
-// in the give layer. A new
-// fGm[layer-1][(fNlad[layer-1]*(ladder-1)+detector-1)].fr[] array is
-// computed.
-////////////////////////////////////////////////////////////////////////
- AliITSgeomS *g;
- Double_t sx,cx,sy,cy,sz,cz;
-
- lay--; lad--; det--; // set to zero base now.
- g = &(fGm[lay][fNdet[lay]*lad+det]);
-
- sx = sin(rx); cx = cos(rx);
- sy = sin(ry); cy = cos(ry);
- sz = sin(rz); cz = cos(rz);
- g->frx = rx;
- g->fry = ry;
- g->frz = rz;
- g->fr[0] = cz*cy;
- g->fr[1] = -cz*sy*sx - sz*cx;
- g->fr[2] = -cz*sy*cx + sz*sx;
- g->fr[3] = sz*cy;
- g->fr[4] = -sz*sy*sx + cz*cx;
- g->fr[5] = -sz*sy*cx - cz*sx;
- g->fr[6] = sy;
- g->fr[7] = cy*sx;
- g->fr[8] = cy*cx;
- return;
+void AliITSgeom::GlobalChange(const Float_t *tran,const Float_t *rot){
+ // This function performs a Cartesian translation and rotation of
+ // the full ITS from its default position by an amount determined by
+ // the three element arrays tran and rot. If every element
+ // of tran and rot are zero then there is no change made
+ // the geometry. The change is global in that the exact same translation
+ // and rotation is done to every detector element in the exact same way.
+ // The units of the translation are those of the Monte Carlo, usually cm,
+ // and those of the rotation are in radians. The elements of tran
+ // are tran[0] = x, tran[1] = y, and tran[2] = z.
+ // The elements of rot are rot[0] = rx, rot[1] = ry, and
+ // rot[2] = rz. A change in x will move the hole ITS in the ALICE
+ // global x direction, the same for a change in y. A change in z will
+ // result in a translation of the ITS as a hole up or down the beam line.
+ // A change in the angles will result in the inclination of the ITS with
+ // respect to the beam line, except for an effective rotation about the
+ // beam axis which will just rotate the ITS as a hole about the beam axis.
+ // Intputs:
+ // Float_t *tran A 3 element array representing the global
+ // translations. the elements are x,y,z in cm.
+ // Float_t *rot A 3 element array representing the global rotation
+ // angles about the three axis x,y,z in radians
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,j;
+ Double_t t[3],r[3];
+ AliITSgeomMatrix *g;
+
+ fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
+ for(i=0;i<fNmodules;i++){
+ g = this->GetGeomMatrix(i);
+ g->GetTranslation(t);
+ g->GetAngles(r);
+ for(j=0;j<3;j++){
+ t[j] += tran[j];
+ r[j] += rot[j];
+ } // end for j
+ g->SetTranslation(t);
+ g->SetAngles(r);
+ } // end for i
+ return;
}
//______________________________________________________________________
-void AliITSgeom::SetByAngles(Int_t index,Double_t angl[]){
-////////////////////////////////////////////////////////////////////////
-// Sets the coordinate rotation transformation for a given module
-// as determined by the module index number.
-////////////////////////////////////////////////////////////////////////
- Int_t lay,lad,det;
- Float_t x,y,z;
-
- GetModuleId(index,lay,lad,det);
- x = (Float_t) angl[0];
- y = (Float_t) angl[1];
- z = (Float_t) angl[2];
- SetByAngles(lay,lad,det,x,y,z);
+void AliITSgeom::GlobalCylindericalChange(const Float_t *tran,
+ const Float_t *rot){
+ // This function performs a cylindrical translation and rotation of
+ // each ITS element by a fixed about in radius, rphi, and z from its
+ // default position by an amount determined by the three element arrays
+ // tran and rot. If every element of tran and
+ // rot are zero then there is no change made the geometry. The
+ // change is global in that the exact same distance change in translation
+ // and rotation is done to every detector element in the exact same way.
+ // The units of the translation are those of the Monte Carlo, usually cm,
+ // and those of the rotation are in radians. The elements of tran
+ // are tran[0] = r, tran[1] = rphi, and tran[2] = z.
+ // The elements of rot are rot[0] = rx, rot[1] = ry, and
+ // rot[2] = rz. A change in r will results in the increase of the
+ // radius of each layer by the same about. A change in rphi will results in
+ // the rotation of each layer by a different angle but by the same
+ // circumferential distance. A change in z will result in a translation
+ // of the ITS as a hole up or down the beam line. A change in the angles
+ // will result in the inclination of the ITS with respect to the beam
+ // line, except for an effective rotation about the beam axis which will
+ // just rotate the ITS as a hole about the beam axis.
+ // Intputs:
+ // Float_t *tran A 3 element array representing the global
+ // translations. the elements are r,theta,z in
+ // cm/radians.
+ // Float_t *rot A 3 element array representing the global rotation
+ // angles about the three axis x,y,z in radians
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,j;
+ Double_t t[3],ro[3],r,r0,phi,rphi;
+ AliITSgeomMatrix *g;
+
+ fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
+ for(i=0;i<fNmodules;i++){
+ g = this->GetGeomMatrix(i);
+ g->GetTranslation(t);
+ g->GetAngles(ro);
+ r = r0= TMath::Hypot(t[1],t[0]);
+ phi = TMath::ATan2(t[1],t[0]);
+ rphi = r0*phi;
+ r += tran[0];
+ rphi += tran[1];
+ phi = rphi/r0;
+ t[0] = r*TMath::Cos(phi);
+ t[1] = r*TMath::Sin(phi);
+ t[2] += tran[2];
+ for(j=0;j<3;j++){
+ ro[j] += rot[j];
+ } // end for j
+ g->SetTranslation(t);
+ g->SetAngles(ro);
+ } // end for i
return;
}
//______________________________________________________________________
-void AliITSgeom::SetTrans(Int_t index,Double_t v[]){
-////////////////////////////////////////////////////////////////////////
-// Sets the coordinate translation for a given module as determined
-// by the module index number.
-////////////////////////////////////////////////////////////////////////
- Int_t lay,lad,det;
- Float_t x,y,z;
-
- GetModuleId(index,lay,lad,det);
- x = (Float_t) v[0];
- y = (Float_t) v[1];
- z = (Float_t) v[2];
- SetTrans(lay,lad,det,x,y,z);
+void AliITSgeom::RandomChange(const Float_t *stran,const Float_t *srot){
+ // This function performs a Gaussian random displacement and/or
+ // rotation about the present global position of each active
+ // volume/detector of the ITS. The sigma of the random displacement
+ // is determined by the three element array stran, for the
+ // x y and z translations, and the three element array srot,
+ // for the three rotation about the axis x y and z.
+ // Intputs:
+ // Float_t *stran A 3 element array representing the global
+ // translations variances. The elements are x,
+ // y,z in cm.
+ // Float_t *srot A 3 element array representing the global rotation
+ // angles variances about the three axis x,y,z in
+ // radians.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,j;
+ Double_t t[3],r[3];
+ AliITSgeomMatrix *g;
+
+ fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
+ for(i=0;i<fNmodules;i++){
+ g = this->GetGeomMatrix(i);
+ g->GetTranslation(t);
+ g->GetAngles(r);
+ for(j=0;j<3;j++){
+ t[j] += gRandom->Gaus(0.0,stran[j]);
+ r[j] += gRandom->Gaus(0.0, srot[j]);
+ } // end for j
+ g->SetTranslation(t);
+ g->SetAngles(r);
+ } // end for i
return;
}
-//___________________________________________________________________________
-void AliITSgeom::GlobalChange(Float_t *tran,Float_t *rot){
-////////////////////////////////////////////////////////////////////////
-// This function performs a Cartesian translation and rotation of
-// the full ITS from its default position by an amount determined by
-// the three element arrays dtranslation and drotation. If every element
-// of dtranslation and drotation are zero then there is no change made
-// the geometry. The change is global in that the exact same translation
-// and rotation is done to every detector element in the exact same way.
-// The units of the translation are those of the Monte Carlo, usually cm,
-// and those of the rotation are in radians. The elements of dtranslation
-// are dtranslation[0] = x, dtranslation[1] = y, and dtranslation[2] = z.
-// The elements of drotation are drotation[0] = rx, drotation[1] = ry, and
-// drotation[2] = rz. A change in x will move the hole ITS in the ALICE
-// global x direction, the same for a change in y. A change in z will
-// result in a translation of the ITS as a hole up or down the beam line.
-// A change in the angles will result in the inclination of the ITS with
-// respect to the beam line, except for an effective rotation about the
-// beam axis which will just rotate the ITS as a hole about the beam axis.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k,l;
- Double_t rx,ry,rz;
- Double_t sx,cx,sy,cy,sz,cz;
- AliITSgeomS *gl;
-
- for(i=0;i<fNlayers;i++){
- for(j=0;j<fNlad[i];j++) for(k=0;k<fNdet[i];k++){
- l = fNdet[i]*j+k; // resolved index
- gl = &(fGm[i][l]);
- gl->fx0 += tran[0];
- gl->fy0 += tran[1];
- gl->fz0 += tran[2];
- gl->frx += rot[0];
- gl->fry += rot[1];
- gl->frz += rot[2];
- rx = gl->frx; ry = gl->fry; rz = gl->frz;
- sx = sin(rx); cx = cos(rx);
- sy = sin(ry); cy = cos(ry);
- sz = sin(rz); cz = cos(rz);
- gl->fr[0] = cz*cy;
- gl->fr[1] = -cz*sy*sx - sz*cx;
- gl->fr[2] = -cz*sy*cx + sz*sx;
- gl->fr[3] = sz*cy;
- gl->fr[4] = -sz*sy*sx + cz*cx;
- gl->fr[5] = -sz*sy*cx - cz*sx;
- gl->fr[6] = sy;
- gl->fr[7] = cy*sx;
- gl->fr[8] = cy*cx;
- } // end for j,k
- } // end for i
- return;
-}
-
-//___________________________________________________________________________
-void AliITSgeom::GlobalCylindericalChange(Float_t *tran,Float_t *rot){
-////////////////////////////////////////////////////////////////////////
-// This function performs a cylindrical translation and rotation of
-// each ITS element by a fixed about in radius, rphi, and z from its
-// default position by an amount determined by the three element arrays
-// dtranslation and drotation. If every element of dtranslation and
-// drotation are zero then there is no change made the geometry. The
-// change is global in that the exact same distance change in translation
-// and rotation is done to every detector element in the exact same way.
-// The units of the translation are those of the Monte Carlo, usually cm,
-// and those of the rotation are in radians. The elements of dtranslation
-// are dtranslation[0] = r, dtranslation[1] = rphi, and dtranslation[2] = z.
-// The elements of drotation are drotation[0] = rx, drotation[1] = ry, and
-// drotation[2] = rz. A change in r will results in the increase of the
-// radius of each layer by the same about. A change in rphi will results in
-// the rotation of each layer by a different angle but by the same
-// circumferential distance. A change in z will result in a translation
-// of the ITS as a hole up or down the beam line. A change in the angles
-// will result in the inclination of the ITS with respect to the beam
-// line, except for an effective rotation about the beam axis which will
-// just rotate the ITS as a hole about the beam axis.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k,l;
- Double_t rx,ry,rz,r,phi,rphi; // phi in radians
- Double_t sx,cx,sy,cy,sz,cz,r0;
- AliITSgeomS *gl;
-
- for(i=0;i<fNlayers;i++){
- for(j=0;j<fNlad[i];j++) for(k=0;k<fNdet[i];k++){
- l = fNdet[i]*j+k; // resolved index
- gl = &(fGm[i][l]);
- r = r0= TMath::Hypot(gl->fy0,gl->fx0);
- phi = atan2(gl->fy0,gl->fx0);
- rphi = r0*phi;
- r += tran[0];
- rphi += tran[1];
- phi = rphi/r0;
- gl->fx0 = r*TMath::Cos(phi);
- gl->fy0 = r*TMath::Sin(phi);
- gl->fz0 += tran[2];
- gl->frx += rot[0];
- gl->fry += rot[1];
- gl->frz += rot[2];
- rx = gl->frx; ry = gl->fry; rz = gl->frz;
- sx = sin(rx); cx = cos(rx);
- sy = sin(ry); cy = cos(ry);
- sz = sin(rz); cz = cos(rz);
- gl->fr[0] = cz*cy;
- gl->fr[1] = -cz*sy*sx - sz*cx;
- gl->fr[2] = -cz*sy*cx + sz*sx;
- gl->fr[3] = sz*cy;
- gl->fr[4] = -sz*sy*sx + cz*cx;
- gl->fr[5] = -sz*sy*cx - cz*sx;
- gl->fr[6] = sy;
- gl->fr[7] = cy*sx;
- gl->fr[8] = cy*cx;
- } // end for j,k
- } // end for i
- return;
+//______________________________________________________________________
+void AliITSgeom::RandomCylindericalChange(const Float_t *stran,
+ const Float_t *srot){
+ // This function performs a Gaussian random displacement and/or
+ // rotation about the present global position of each active
+ // volume/detector of the ITS. The sigma of the random displacement
+ // is determined by the three element array stran, for the
+ // r rphi and z translations, and the three element array srot,
+ // for the three rotation about the axis x y and z. This random change
+ // in detector position allow for the simulation of a random uncertainty
+ // in the detector positions of the ITS.
+ // Intputs:
+ // Float_t *stran A 3 element array representing the global
+ // translations variances. The elements are r,
+ // theta,z in cm/radians.
+ // Float_t *srot A 3 element array representing the global rotation
+ // angles variances about the three axis x,y,z in
+ // radians.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,j;
+ Double_t t[3],ro[3],r,r0,phi,rphi;
+ TRandom ran;
+ AliITSgeomMatrix *g;
+
+ fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
+ for(i=0;i<fNmodules;i++){
+ g = this->GetGeomMatrix(i);
+ g->GetTranslation(t);
+ g->GetAngles(ro);
+ r = r0= TMath::Hypot(t[1],t[0]);
+ phi = TMath::ATan2(t[1],t[0]);
+ rphi = r0*phi;
+ r += ran.Gaus(0.0,stran[0]);
+ rphi += ran.Gaus(0.0,stran[1]);
+ phi = rphi/r0;
+ t[0] = r*TMath::Cos(phi);
+ t[1] = r*TMath::Sin(phi);
+ t[2] += ran.Gaus(0.0,stran[2]);
+ for(j=0;j<3;j++){
+ ro[j] += ran.Gaus(0.0, srot[j]);
+ } // end for j
+ g->SetTranslation(t);
+ g->SetAngles(ro);
+ } // end for i
+ return;
}
-
-//___________________________________________________________________________
-void AliITSgeom::RandomChange(Float_t *stran,Float_t *srot){
-////////////////////////////////////////////////////////////////////////
-// This function performs a Gaussian random displacement and/or
-// rotation about the present global position of each active
-// volume/detector of the ITS. The sigma of the random displacement
-// is determined by the three element array stran, for the
-// x y and z translations, and the three element array srot,
-// for the three rotation about the axis x y and z.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k,l;
- Double_t rx,ry,rz;
- Double_t sx,cx,sy,cy,sz,cz;
- TRandom ran;
- AliITSgeomS *gl;
-
- for(i=0;i<fNlayers;i++){
- for(j=0;j<fNlad[i];j++) for(k=0;k<fNdet[i];k++){
- l = fNdet[i]*j+k; // resolved index
- gl = &(fGm[i][l]);
- gl->fx0 += ran.Gaus(0.0,stran[0]);
- gl->fy0 += ran.Gaus(0.0,stran[1]);
- gl->fz0 += ran.Gaus(0.0,stran[2]);
- gl->frx += ran.Gaus(0.0, srot[0]);
- gl->fry += ran.Gaus(0.0, srot[1]);
- gl->frz += ran.Gaus(0.0, srot[2]);
- rx = gl->frx; ry = gl->fry; rz = gl->frz;
- sx = sin(rx); cx = cos(rx);
- sy = sin(ry); cy = cos(ry);
- sz = sin(rz); cz = cos(rz);
- gl->fr[0] = cz*cy;
- gl->fr[1] = -cz*sy*sx - sz*cx;
- gl->fr[2] = -cz*sy*cx + sz*sx;
- gl->fr[3] = sz*cy;
- gl->fr[4] = -sz*sy*sx + cz*cx;
- gl->fr[5] = -sz*sy*cx - cz*sx;
- gl->fr[6] = sy;
- gl->fr[7] = cy*sx;
- gl->fr[8] = cy*cx;
- } // end for j,k
- } // end for i
- return;
+//______________________________________________________________________
+void AliITSgeom::GeantToTracking(const AliITSgeom &source){
+ // Copy the geometry data but change it to go between the ALICE
+ // Global coordinate system to that used by the ITS tracking. A slightly
+ // different coordinate system is used when tracking. This coordinate
+ // system is only relevant when the geometry represents the cylindrical
+ // ALICE ITS geometry. For tracking the Z axis is left alone but X-> -Y
+ // and Y-> X such that X always points out of the ITS cylinder for every
+ // layer including layer 1 (where the detectors are mounted upside down).
+ //Begin_Html
+ /*
+ <img src="picts/ITS/AliITSgeomMatrix_T1.gif">
+ */
+ //End_Html
+ // Input:
+ // AliITSgeom &source The AliITSgeom class with which to make this
+ // a copy of.
+ // Output:
+ // none.
+ // Return:
+ // none.
+ Int_t i,j,k,l,id[3];
+ Double_t r0[3][3],r1[3][3];
+ Double_t a0[3][3] = {{0.,+1.,0.},{-1.,0.,0.},{0.,0.,+1.}};
+ Double_t a1[3][3] = {{0.,-1.,0.},{+1.,0.,0.},{0.,0.,+1.}};
+
+ *this = source; // copy everything
+ for(i=0;i<GetIndexMax();i++){
+ GetGeomMatrix(i)->GetIndex(id);
+ GetGeomMatrix(i)->GetMatrix(r0);
+ if(id[0]==1){ // Layer 1 is treated different from the others.
+ for(j=0;j<3;j++) for(k=0;k<3;k++){
+ r1[j][k] = 0.;
+ for(l=0;l<3;l++) r1[j][k] += a0[j][l]*r0[l][k];
+ } // end for j,k
+ }else{
+ for(j=0;j<3;j++) for(k=0;k<3;k++){
+ r1[j][k] = 0.;
+ for(l=0;l<3;l++) r1[j][k] += a1[j][l]*r0[l][k];
+ } // end for j,k
+ } // end if
+ GetGeomMatrix(i)->SetMatrix(r1);
+ } // end for i
+ this->fTrans = (this->fTrans && 0xfffe) + 1; // set bit 0 true.
+ return;
}
-
-//___________________________________________________________________________
-void AliITSgeom::RandomCylindericalChange(Float_t *stran,Float_t *srot){
-////////////////////////////////////////////////////////////////////////
-// This function performs a Gaussian random displacement and/or
-// rotation about the present global position of each active
-// volume/detector of the ITS. The sigma of the random displacement
-// is determined by the three element array stran, for the
-// r rphi and z translations, and the three element array srot,
-// for the three rotation about the axis x y and z. This random change
-// in detector position allow for the simulation of a random uncertainty
-// in the detector positions of the ITS.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k,l;
- Double_t rx,ry,rz,r,phi,x,y; // phi in radians
- Double_t sx,cx,sy,cy,sz,cz,r0;
- TRandom ran;
- AliITSgeomS *gl;
-
- for(i=0;i<fNlayers;i++){
- for(j=0;j<fNlad[i];j++) for(k=0;k<fNdet[i];k++){
- l = fNdet[i]*j+k; // resolved index
- gl = &(fGm[i][l]);
- x = gl->fx0;
- y = gl->fy0;
- r = r0= TMath::Hypot(y,x);
- phi = TMath::ATan2(y,x);
- r += ran.Gaus(0.0,stran[0]);
- phi += ran.Gaus(0.0,stran[1])/r0;
- gl->fx0 = r*TMath::Cos(phi);
- gl->fy0 = r*TMath::Sin(phi);
- gl->fz0 += ran.Gaus(0.0,stran[2]);
- gl->frx += ran.Gaus(0.0, srot[0]);
- gl->fry += ran.Gaus(0.0, srot[1]);
- gl->frz += ran.Gaus(0.0, srot[2]);
- rx = gl->frx; ry = gl->fry; rz = gl->frz;
- sx = sin(rx); cx = cos(rx);
- sy = sin(ry); cy = cos(ry);
- sz = sin(rz); cz = cos(rz);
- gl->fr[0] = cz*cy;
- gl->fr[1] = -cz*sy*sx - sz*cx;
- gl->fr[2] = -cz*sy*cx + sz*sx;
- gl->fr[3] = sz*cy;
- gl->fr[4] = -sz*sy*sx + cz*cx;
- gl->fr[5] = -sz*sy*cx - cz*sx;
- gl->fr[6] = sy;
- gl->fr[7] = cy*sx;
- gl->fr[8] = cy*cx;
- } // end for j,k
- } // end for i
- return;
+//______________________________________________________________________
+Int_t AliITSgeom::GetNearest(const Double_t g[3],Int_t lay)const{
+ // Finds the Detector (Module) that is nearest the point g [cm] in
+ // ALICE Global coordinates. If layer !=0 then the search is restricted
+ // to Detectors (Modules) in that particular layer.
+ // Inputs:
+ // Double_t g[3] The ALICE Cartesian global coordinate from which the
+ // distance is to be calculated with.
+ // Int_t lay The layer to restrict the search to. If layer=0 then
+ // all layers are searched. Default is lay=0.
+ // Output:
+ // none.
+ // Return:
+ // The module number representing the nearest module.
+ Int_t i,l,a,e,in=0;
+ Double_t d,dn=1.0e10;
+ Bool_t t=lay!=0; // skip if lay = 0 default value check all layers.
+
+ for(i=0;i<fNmodules;i++){
+ if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
+ if((d=GetGeomMatrix(i)->Distance2(g))<dn){
+ dn = d;
+ in = i;
+ } // end if
+ } // end for i
+ return in;
}
//______________________________________________________________________
-void AliITSgeom::GeantToTracking(AliITSgeom &source){
-/////////////////////////////////////////////////////////////////////////
-// Copy the geometry data but change it to make coordinate systems
-// changes between the Global to the Local coordinate system used for
-// ITS tracking. Basicly the difference is that the direction of the
-// y coordinate system for layer 1 is rotated about the z axis 180 degrees
-// so that it points in the same direction as it does in all of the other
-// layers.
-// Fixed for bug and new calulation of tracking coordiantes. BSN June 8 2000.
-////////////////////////////////////////////////////////////////////////////
- Double_t oor,pr,qr;
- Int_t i,j,k;
- Double_t pi = TMath::Pi();
-
- if(this == &source) return; // don't assign to ones self.
-
- // if there is an old structure allocated delete it first.
- if(fGm != 0){
- for(i=0;i<fNlayers;i++) delete[] fGm[i];
- delete[] fGm;
- } // end if fGm != 0
- if(fNlad != 0) delete[] fNlad;
- if(fNdet != 0) delete[] fNdet;
-
- fNlayers = source.fNlayers;
- fNlad = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) fNlad[i] = source.fNlad[i];
- fNdet = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) fNdet[i] = source.fNdet[i];
- fShape = new TObjArray(*(source.fShape));//This does not make a proper copy.
- fGm = new AliITSgeomS* [fNlayers];
- for(i=0;i<fNlayers;i++){
- fGm[i] = new AliITSgeomS[fNlad[i]*fNdet[i]];
- for(j=0;j<(fNlad[i]*fNdet[i]);j++){
- fGm[i][j].fShapeIndex = source.fGm[i][j].fShapeIndex;
- fGm[i][j].fx0 = source.fGm[i][j].fx0;
- fGm[i][j].fy0 = source.fGm[i][j].fy0;
- fGm[i][j].fz0 = source.fGm[i][j].fz0;
- fGm[i][j].frx = source.fGm[i][j].frx;
- fGm[i][j].fry = source.fGm[i][j].fry;
- fGm[i][j].frz = source.fGm[i][j].frz;
- for(k=0;k<9;k++) fGm[i][j].fr[k] = source.fGm[i][j].fr[k];
- if(i==0) { // layer=1 is placed up side down
- // mupliply by -1 0 0
- // 0 -1 0
- // 0 0 1.
- fGm[i][j].fr[0] = -source.fGm[i][j].fr[0];
- fGm[i][j].fr[1] = -source.fGm[i][j].fr[1];
- fGm[i][j].fr[2] = -source.fGm[i][j].fr[2];
- fGm[i][j].fr[3] = -source.fGm[i][j].fr[3];
- fGm[i][j].fr[4] = -source.fGm[i][j].fr[4];
- fGm[i][j].fr[5] = -source.fGm[i][j].fr[5];
- } // end if i=1
- // get angles from matrix up to a phase of 180 degrees.
- oor = atan2(fGm[i][j].fr[7],fGm[i][j].fr[8]);
- if(oor<0.0) oor += 2.0*pi;
- pr = asin(fGm[i][j].fr[2]);
- if(pr<0.0) pr += 2.0*pi;
- qr = atan2(fGm[i][j].fr[3],fGm[i][j].fr[0]);
- if(qr<0.0) qr += 2.0*pi;
- fGm[i][j].frx = oor;
- fGm[i][j].fry = pr;
- fGm[i][j].frz = qr;
- } // end for j
- } // end for i
- return;
+void AliITSgeom::GetNearest27(const Double_t g[3],Int_t n[27],Int_t lay)const{
+ // Finds 27 Detectors (Modules) that are nearest the point g [cm] in
+ // ALICE Global coordinates. If layer !=0 then the search is restricted
+ // to Detectors (Modules) in that particular layer. The number 27 comes
+ // from including the nearest detector and all those around it (up, down,
+ // left, right, forwards, backwards, and the corners).
+ // Input:
+ // Double_t g[3] The ALICE Cartesian global coordinate from which the
+ // distance is to be calculated with.
+ // Int_t lay The layer to restrict the search to. If layer=0 then
+ // all layers are searched. Default is lay=0.
+ // Output:
+ // Int_t n[27] The module number representing the nearest 27 modules
+ // in order.
+ // Return:
+ // none.
+ Int_t i,l,a,e,in[27]={0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,};
+ Double_t d,dn[27]={1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10};
+ Bool_t t=(lay!=0); // skip if lay = 0 default value check all layers.
+
+ for(i=0;i<fNmodules;i++){
+ if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
+ for(a=0;a<27;a++){
+ d = GetGeomMatrix(i)->Distance2(g);
+ if(d<dn[a]){
+ for(e=26;e>a;e--){dn[e] = dn[e-1];in[e] = in[e-1];}
+ dn[a] = d; in[a] = i;
+ } // end if d<dn[i]
+ } // end for a
+ } // end for i
+ for(i=0;i<27;i++) n[i] = in[i];
}
-//___________________________________________________________________________
-void AliITSgeom::Streamer(TBuffer &lRb){
-////////////////////////////////////////////////////////////////////////
-// The default Streamer function "written by ROOT" doesn't write out
-// the arrays referenced by pointers. Therefore, a specific Streamer function
-// has to be written. This function should not be modified but instead added
-// on to so that older versions can still be read. The proper handling of
-// the version dependent streamer function hasn't been written do to the lack
-// of finding an example at the time of writing.
-////////////////////////////////////////////////////////////////////////
- // Stream an object of class AliITSgeom.
- Int_t i,j,k,n;
-
-
- printf("AliITSgeomStreamer starting\n");
- if (lRb.IsReading()) {
- Version_t lRv = lRb.ReadVersion(); if (lRv) { }
- TObject::Streamer(lRb);
- printf("AliITSgeomStreamer reading fNlayers\n");
- lRb >> fNlayers;
- if(fNlad!=0) delete[] fNlad;
- if(fNdet!=0) delete[] fNdet;
- fNlad = new Int_t[fNlayers];
- fNdet = new Int_t[fNlayers];
- printf("AliITSgeomStreamer fNlad\n");
- for(i=0;i<fNlayers;i++) lRb >> fNlad[i];
- printf("AliITSgeomStreamer fNdet\n");
- for(i=0;i<fNlayers;i++) lRb >> fNdet[i];
- if(fGm!=0){
- for(i=0;i<fNlayers;i++) delete[] fGm[i];
- delete[] fGm;
- } // end if fGm!=0
- fGm = new AliITSgeomS*[fNlayers];
- printf("AliITSgeomStreamer AliITSgeomS\n");
- for(i=0;i<fNlayers;i++){
- n = fNlad[i]*fNdet[i];
- fGm[i] = new AliITSgeomS[n];
- for(j=0;j<n;j++){
- lRb >> fGm[i][j].fShapeIndex;
- lRb >> fGm[i][j].fx0;
- lRb >> fGm[i][j].fy0;
- lRb >> fGm[i][j].fz0;
- lRb >> fGm[i][j].frx;
- lRb >> fGm[i][j].fry;
- lRb >> fGm[i][j].frz;
- for(k=0;k<9;k++) lRb >> fGm[i][j].fr[k];
- } // end for j
- } // end for i
- /*
- if(fShape!=0){
- delete fShape;
- } // end if
- printf("AliITSgeomStreamer reading fShape\n");
- lRb >> fShape;
- */
- //if (fShape) fShape->Streamer(lRb);
- } else {
- lRb.WriteVersion(AliITSgeom::IsA());
- TObject::Streamer(lRb);
- lRb << fNlayers;
- for(i=0;i<fNlayers;i++) lRb << fNlad[i];
- for(i=0;i<fNlayers;i++) lRb << fNdet[i];
- for(i=0;i<fNlayers;i++) for(j=0;j<fNlad[i]*fNdet[i];j++){
- lRb << fGm[i][j].fShapeIndex;
- lRb << fGm[i][j].fx0;
- lRb << fGm[i][j].fy0;
- lRb << fGm[i][j].fz0;
- lRb << fGm[i][j].frx;
- lRb << fGm[i][j].fry;
- lRb << fGm[i][j].frz;
- for(k=0;k<9;k++) lRb << fGm[i][j].fr[k];
- } // end for i,j
- // lRb << fShape;
- //if (fShape) fShape->Streamer(lRb);
- } // end if reading
- printf("AliITSgeomStreamer Finished\n");
+//----------------------------------------------------------------------
+Double_t AliITSgeom::GetAverageRadiusOfLayer(Int_t layer,Double_t &range)const{
+ // Loops over all modules for a given layer and computes the
+ // average cylindrical radius (about the z axis) and the range of
+ // radii covered by this layer. Units, [cm] the Alice default unit.
+ // Input:
+ // Int_t layer The layer for which the average radii is to be found
+ // Output:
+ // Double_t &range The range of radii covered by this layer
+ // Return:
+ // The average radii for this layer.
+ Double_t r=0.0,rmin=1.0e6,rmax=-1.0,rp,t[3],l[3],dl[3];
+ Int_t n=0,i,j,lay,lad,det;
+ AliITSDetector idet;
+
+ for(i=0;i<GetIndexMax();i++) {
+ GetModuleId(i,lay,lad,det);
+ idet = GetModuleType(i);
+ if(lay!=layer) continue;
+ dl[0] = dl[1] = dl[2] = 0.0;
+ if(IsShapeDefined((Int_t)idet)) {
+ switch(idet){
+ case kSPD:{
+ dl[0] = ((AliITSgeomSPD*)GetShape(idet))->GetDx();
+ dl[1] = ((AliITSgeomSPD*)GetShape(idet))->GetDy();
+ dl[2] = ((AliITSgeomSPD*)GetShape(idet))->GetDz();
+ } break;
+ case kSDD: case kSDDp:{
+ dl[0] = ((AliITSgeomSDD*)GetShape(idet))->GetDx();
+ dl[1] = ((AliITSgeomSDD*)GetShape(idet))->GetDy();
+ dl[2] = ((AliITSgeomSDD*)GetShape(idet))->GetDz();
+ } break;
+ case kSSD: case kSSDp:{
+ dl[0] = ((AliITSgeomSSD*)GetShape(idet))->GetDx();
+ dl[1] = ((AliITSgeomSSD*)GetShape(idet))->GetDy();
+ dl[2] = ((AliITSgeomSSD*)GetShape(idet))->GetDz();
+ } break;
+ case kND:{
+ Warning("GetAverageRadiusOfLayer",
+ "idet=kND undefined detector type");
+ continue;
+ }break;
+ default:{
+ Warning("GetAverageRadiusOfLayer",
+ "idet=%d not a defined value",(Int_t)idet);
+ continue;
+ }break;
+ }// end switch.
+ } // end of
+ n++;
+ GetTransCyln(i,t);
+ rp = t[0];
+ r += rp;
+ if(rmin>rp) rmin = rp;
+ if(rmax<rp) rmax = rp;
+ for(j=0;j<8;j++){ // loop over the corners
+ l[0] = dl[0];if(j%2==0) l[0] = -dl[0];
+ l[1] = dl[1];if(j==2||j==3||j==6||j==7) l[1] = -dl[1];
+ l[2] = dl[2];if(j>3) l[2] = -dl[2];
+ LtoG(i,l,t);
+ rp = TMath::Sqrt(t[0]*t[0]+t[1]*t[1]);
+ if(rmin>rp) rmin = rp;
+ if(rmax<rp) rmax = rp;
+ } // end for j
+ } // end for i
+ r /= (Double_t)n;
+ range = TMath::Max(rmax-r,r-rmin);
+ return r;
}
+//_______________________________________________________________________
+void AliITSgeom::DetLToTrackingV2(Int_t md,Float_t xin,Float_t zin,
+ Float_t &yout,Float_t &zout) {
+
+ //Conversion from local coordinates on detectors to local
+ //coordinates used for tracking ("v2")
+ // Inputs:
+ // Int_t md Module number
+ // Float_t xin Standard local coordinate x
+ // Float_t zin Standard local coordinate z
+ // Output:
+ // Float_t yout Tracking local coordinate y
+ // Float_t zout Tracking local coordinate z
+ // Return:
+ // none.
+ Float_t x,y,z;
+ Double_t rt[9],al;
+
+ GetTrans(md,x,y,z);
+ GetRotMatrix(md,rt);
+ al = TMath::ATan2(rt[1],rt[0])+TMath::Pi();
+ yout = -(-xin+(x*((Float_t)TMath::Cos(al))+y*((Float_t)TMath::Sin(al))));
+ if(md<(GetModuleIndex(2,1,1))) yout *= -1;
+ zout = -zin+z;
+}
+//_______________________________________________________________________
+void AliITSgeom::TrackingV2ToDetL(Int_t md,Float_t yin,Float_t zin,
+ Float_t &xout,Float_t &zout) {
+ //Conversion from local coordinates used for tracking ("v2") to
+ //local detector coordinates
+ // Inputs:
+ // Int_t md Module number
+ // Float_t yin Tracking local coordinate y
+ // Float_t zin Tracking local coordinate z
+ // Output:
+ // Float_t xout Standard local coordinate x
+ // Float_t zout Standard local coordinate z
+ // Return:
+ // none.
+ Float_t x,y,z;
+ Double_t rt[9],al;
+
+ GetTrans(md,x,y,z);
+ GetRotMatrix(md,rt);
+ al = TMath::ATan2(rt[1],rt[0])+TMath::Pi();
+ xout = yin;
+ if(md<(GetModuleIndex(2,1,1))) xout = -xout;
+ xout += (x*((Float_t)TMath::Cos(al))+y*((Float_t)TMath::Sin(al)));
+ zout = -zin+z;
+}
+//----------------------------------------------------------------------
+ostream &operator<<(ostream &os,AliITSgeom &p){
+ // Standard output streaming function.
+ // Inputs:
+ // ostream os The output stream
+ // AliITSgeom p The AliITSgeom class to be printed out
+ // Outputs:
+ // none.
+ // Return:
+ // The input stream
+
+ p.PrintGeom(&os);
+ return os;
+}
+//----------------------------------------------------------------------
+istream &operator>>(istream &is,AliITSgeom &r){
+ // Standard input streaming function.
+ // Inputs:
+ // istream is The input stream
+ // AliITSgeom p The AliITSgeom class to be filled from this
+ // input stream
+ // Outputs:
+ // none.
+ // Return:
+ // The input stream
+
+ r.ReadGeom(&is);
+ return is;
+}
+//----------------------------------------------------------------------
+
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