+++ /dev/null
-/***************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- * *
- * Author: The ALICE Off-line Project. *
- * Contributors are mentioned in the code where appropriate. *
- * *
- * Permission to use, copy, modify and distribute this software and its *
- * documentation strictly for non-commercial purposes is hereby granted *
- * without fee, provided that the above copyright notice appears in all *
- * copies and that both the copyright notice and this permission notice *
- * appear in the supporting documentation. The authors make no claims *
- * about the suitability of this software for any purpose. It is *
- * provided "as is" without express or implied warranty. *
- **************************************************************************/
-//-----------------------------------------------------//
-// //
-// //
-// Date : August 05 2003 //
-// //
-// Utility code for ALICE-PMD //
-// //
-//-----------------------------------------------------//
-
-#include "Riostream.h"
-#include "AliPMDUtility.h"
-#include "TMath.h"
-#include <stdio.h>
-#include <math.h>
-
-
-ClassImp(AliPMDUtility)
-
-AliPMDUtility::AliPMDUtility():
- fPx(0.),
- fPy(0.),
- fPz(0.),
- fTheta(0.),
- fEta(0.),
- fPhi(0.)
-{
- // Default constructor
-}
-
-AliPMDUtility::AliPMDUtility(Float_t px, Float_t py, Float_t pz):
- fPx(px),
- fPy(py),
- fPz(pz),
- fTheta(0.),
- fEta(0.),
- fPhi(0.)
-{
- // Constructor
-}
-AliPMDUtility::AliPMDUtility(const AliPMDUtility &pmdutil):
- fPx(pmdutil.fPx),
- fPy(pmdutil.fPy),
- fPz(pmdutil.fPz),
- fTheta(pmdutil.fTheta),
- fEta(pmdutil.fEta),
- fPhi(pmdutil.fPhi)
-{
- // copy constructor
-}
-AliPMDUtility & AliPMDUtility::operator=(const AliPMDUtility &pmdutil)
-{
- // assignment operator
- if(this != &pmdutil)
- {
- fPx = pmdutil.fPx;
- fPy = pmdutil.fPy;
- fPz = pmdutil.fPz;
- fTheta = pmdutil.fTheta;
- fEta = pmdutil.fEta;
- fPhi = pmdutil.fPhi;
- }
- return *this;
-}
-AliPMDUtility::~AliPMDUtility()
-{
- // Default destructor
-}
-
-void AliPMDUtility::RectGeomCellPos(Int_t ism, Int_t xpad, Int_t ypad, Float_t &xpos, Float_t &ypos)
-{
- // This routine finds the cell eta,phi for the new PMD rectangular
- // geometry in ALICE
- // Authors : Bedanga Mohanty and Dipak Mishra - 29.4.2003
- // modified by B. K. Nandi for change of coordinate sys
- //
- // SMA ---> Supermodule Type A ( SM - 0)
- // SMAR ---> Supermodule Type A ROTATED ( SM - 1)
- // SMB ---> Supermodule Type B ( SM - 2)
- // SMBR ---> Supermodule Type B ROTATED ( SM - 3)
- //
- // ism : Serial module number from 0 to 23 for each plane
-
-
- // Corner positions (x,y) of the 24 unit moudles in ALICE PMD
-
- double xcorner[24] =
- {
- 74.8833, 53.0045, 31.1255, //Type-A
- 74.8833, 53.0045, 31.1255, //Type-A
- -74.8833, -53.0044, -31.1255, //Type-AR
- -74.8833, -53.0044, -31.1255, //Type-AR
- 8.9165, -33.7471, //Type-B
- 8.9165, -33.7471, //Type-B
- 8.9165, -33.7471, //Type-B
- -8.9165, 33.7471, //Type-BR
- -8.9165, 33.7471, //Type-BR
- -8.9165, 33.7471, //Type-BR
- };
-
-
- double ycorner[24] =
- {
- 86.225, 86.225, 86.225, //Type-A
- 37.075, 37.075, 37.075, //Type-A
- -86.225, -86.225, -86.225, //Type-AR
- -37.075, -37.075, -37.075, //Type-AR
- 86.225, 86.225, //Type-B
- 61.075, 61.075, //Type-B
- 35.925, 35.925, //Type-B
- -86.225, -86.225, //Type-BR
- -61.075, -61.075, //Type-BR
- -35.925, -35.925 //Type-BR
- };
-
-
- const Float_t kSqroot3 = 1.73205; // sqrt(3.);
- const Float_t kCellRadius = 0.25;
-
- //
- //Every even row of cells is shifted and placed
- //in geant so this condition
- //
- Float_t cellRadius = 0.25;
- Float_t shift = 0.0;
- if(xpad%2 == 0)
- {
- shift = -cellRadius/2.0;
- }
- else
- {
- shift = 0.0;
- }
-
-
- if(ism < 6)
- {
- ypos = ycorner[ism] - (Float_t) xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] - (Float_t) ypad*kSqroot3*kCellRadius;
- }
- else if(ism >=6 && ism < 12)
- {
- ypos = ycorner[ism] + (Float_t) xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] + (Float_t) ypad*kSqroot3*kCellRadius;
- }
- else if(ism >= 12 && ism < 18)
- {
- ypos = ycorner[ism] - (Float_t) xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] - (Float_t) ypad*kSqroot3*kCellRadius;
- }
- else if(ism >= 18 && ism < 24)
- {
- ypos = ycorner[ism] + (Float_t) xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] + (Float_t) ypad*kSqroot3*kCellRadius;
- }
-
-}
-
-void AliPMDUtility::RectGeomCellPos(Int_t ism, Float_t xpad, Float_t ypad, Float_t &xpos, Float_t &ypos)
-{
- // If the xpad and ypad inputs are float, then 0.5 is added to it
- // to find the layer which is shifted.
- // This routine finds the cell eta,phi for the new PMD rectangular
- // geometry in ALICE
- // Authors : Bedanga Mohanty and Dipak Mishra - 29.4.2003
- // modified by B. K. Nnadi for change of coordinate sys
- //
- // SMA ---> Supermodule Type A ( SM - 0)
- // SMAR ---> Supermodule Type A ROTATED ( SM - 1)
- // SMB ---> Supermodule Type B ( SM - 2)
- // SMBR ---> Supermodule Type B ROTATED ( SM - 3)
- //
- // ism : Serial Module number from 0 to 23 for each plane
-
- // Corner positions (x,y) of the 24 unit moudles in ALICE PMD
-
- double xcorner[24] =
- {
- 74.8833, 53.0045, 31.1255, //Type-A
- 74.8833, 53.0045, 31.1255, //Type-A
- -74.8833, -53.0044, -31.1255, //Type-AR
- -74.8833, -53.0044, -31.1255, //Type-AR
- 8.9165, -33.7471, //Type-B
- 8.9165, -33.7471, //Type-B
- 8.9165, -33.7471, //Type-B
- -8.9165, 33.7471, //Type-BR
- -8.9165, 33.7471, //Type-BR
- -8.9165, 33.7471, //Type-BR
- };
-
-
-
- double ycorner[24] =
- {
- 86.225, 86.225, 86.225, //Type-A
- 37.075, 37.075, 37.075, //Type-A
- -86.225, -86.225, -86.225, //Type-AR
- -37.075, -37.075, -37.075, //Type-AR
- 86.225, 86.225, //Type-B
- 61.075, 61.075, //Type-B
- 35.925, 35.925, //Type-B
- -86.225, -86.225, //Type-BR
- -61.075, -61.075, //Type-BR
- -35.925, -35.925 //Type-BR
- };
-
-
- const Float_t kSqroot3 = 1.73205; // sqrt(3.);
- const Float_t kCellRadius = 0.25;
-
- //
- //Every even row of cells is shifted and placed
- //in geant so this condition
- //
- Float_t cellRadius = 0.25;
- Float_t shift = 0.0;
- Int_t iirow = (Int_t) (xpad+0.5);
- if(iirow%2 == 0)
- {
- shift = -cellRadius/2.0;
- }
- else
- {
- shift = 0.0;
- }
-
- if(ism < 6)
- {
- ypos = ycorner[ism] - xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] - ypad*kSqroot3*kCellRadius;
- }
- else if(ism >=6 && ism < 12)
- {
- ypos = ycorner[ism] + xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] + ypad*kSqroot3*kCellRadius;
- }
- else if(ism >= 12 && ism < 18)
- {
- ypos = ycorner[ism] - xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] - ypad*kSqroot3*kCellRadius;
- }
- else if(ism >= 18 && ism < 24)
- {
- ypos = ycorner[ism] + xpad*kCellRadius*2.0 + shift;
- xpos = xcorner[ism] + ypad*kSqroot3*kCellRadius;
- }
-
-}
-void AliPMDUtility::ApplyVertexCorrection(Float_t vertex[], Float_t xpos,
- Float_t ypos, Float_t zpos)
-{
- // Not implemented
- fPx = xpos - vertex[0];
- fPy = ypos - vertex[1];
- fPz = zpos - vertex[2];
-}
-void AliPMDUtility::ApplyAlignment()
-{
- // Not implemented
-}
-
-void AliPMDUtility::SetPxPyPz(Float_t px, Float_t py, Float_t pz)
-{
- fPx = px;
- fPy = py;
- fPz = pz;
-}
-
-void AliPMDUtility::SetXYZ(Float_t xpos, Float_t ypos, Float_t zpos)
-{
- fPx = xpos;
- fPy = ypos;
- fPz = zpos;
-}
-void AliPMDUtility::CalculateEta()
-{
- Float_t rpxpy, theta, eta;
-
- rpxpy = TMath::Sqrt(fPx*fPx + fPy*fPy);
- theta = TMath::ATan2(rpxpy,fPz);
- eta = -TMath::Log(TMath::Tan(0.5*theta));
- fTheta = theta;
- fEta = eta;
-}
-void AliPMDUtility::CalculatePhi()
-{
- Float_t pybypx, phi = 0., phi1;
-
- if(fPx==0)
- {
- if(fPy>0) phi = 90.;
- if(fPy<0) phi = 270.;
- }
- if(fPx != 0)
- {
- pybypx = fPy/fPx;
- if(pybypx < 0) pybypx = - pybypx;
- phi1 = TMath::ATan(pybypx)*180./3.14159;
-
- if(fPx > 0 && fPy > 0) phi = phi1; // 1st Quadrant
- if(fPx < 0 && fPy > 0) phi = 180 - phi1; // 2nd Quadrant
- if(fPx < 0 && fPy < 0) phi = 180 + phi1; // 3rd Quadrant
- if(fPx > 0 && fPy < 0) phi = 360 - phi1; // 4th Quadrant
-
- }
- phi = phi*3.14159/180.;
-
- fPhi = phi;
-
-}
-void AliPMDUtility::CalculateEtaPhi()
-{
- Float_t rpxpy, theta, eta;
- Float_t pybypx, phi = 0., phi1;
-
- rpxpy = TMath::Sqrt(fPx*fPx + fPy*fPy);
- theta = TMath::ATan2(rpxpy,fPz);
- eta = -TMath::Log(TMath::Tan(0.5*theta));
-
- if(fPx == 0)
- {
- if(fPy>0) phi = 90.;
- if(fPy<0) phi = 270.;
- }
- if(fPx != 0)
- {
- pybypx = fPy/fPx;
- if(pybypx < 0) pybypx = - pybypx;
- phi1 = TMath::ATan(pybypx)*180./3.14159;
- if(fPx > 0 && fPy > 0) phi = phi1; // 1st Quadrant
- if(fPx < 0 && fPy > 0) phi = 180 - phi1; // 2nd Quadrant
- if(fPx < 0 && fPy < 0) phi = 180 + phi1; // 3rd Quadrant
- if(fPx > 0 && fPy < 0) phi = 360 - phi1; // 4th Quadrant
-
- }
- phi = phi*3.14159/180.;
-
- fTheta = theta;
- fEta = eta;
- fPhi = phi;
-}
-void AliPMDUtility::CalculateXY(Float_t eta, Float_t phi, Float_t zpos)
-{
- // Not implemented
-
- // eta = -TMath::Log(TMath::Tan(0.5*theta));
-
- Float_t xpos = 0., ypos = 0.;
-
- // Float_t theta = 2.0*TMath::ATan(TMath::Log(-eta));
-
- fEta = eta;
- fPhi = phi;
- fPx = xpos;
- fPy = ypos;
- fPz = zpos;
-}
-Float_t AliPMDUtility::GetTheta() const
-{
- return fTheta;
-}
-Float_t AliPMDUtility::GetEta() const
-{
- return fEta;
-}
-Float_t AliPMDUtility::GetPhi() const
-{
- return fPhi;
-}
-Float_t AliPMDUtility::GetX() const
-{
- return fPx;
-}
-Float_t AliPMDUtility::GetY() const
-{
- return fPy;
-}
-Float_t AliPMDUtility::GetZ() const
-{
- return fPz;
-}
-
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff