FairGeoSphe.cxx

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//*-- AUTHOR : Ilse Koenig
//*-- Modified : 11/11/2003 by Ilse Koenig
//*-- Modified : 29/06/99 by Ilse Koenig

//
// FairGeoSphe
//
// class for the GEANT shape SPHE
//
// The size of a SPHE is defined by 3 'points' (The z-components are not used)
//   point 0:   inner radius of the shell
//              outer radius of the shell;
//   point 1:   starting polar angle of the shell,
//              ending polar angle of the shell;
//   point 2:   starting azimuthal angle of the shell,
//              ending azimuthal angle of the shell; )
//
// The intrinsic coordinate system of a SPHE, which sits in the CAVE and is
// not rotated, is identical with the laboratory system.
//

#include "FairGeoSphe.h"

#include "FairGeoVolume.h"
#include "FairGeoVector.h"

#include "TArrayD.h"

ClassImp(FairGeoSphe)

FairGeoSphe::FairGeoSphe()
  :FairGeoBasicShape()
{
  // constructor
  fName="SPHE";
  nPoints=3;
  nParam=6;
  param=new TArrayD(nParam);
}


FairGeoSphe::~FairGeoSphe()
{
  // default destructor
  if (param) {
    delete param;
    param=0;
  }
  if (center) {
    delete center;
    center=0;
  }
  if (position) {
    delete position;
    position=0;
  }
}


Int_t FairGeoSphe::readPoints(std::fstream* pFile,FairGeoVolume* volu)
{
  // reads the 3 'points' decribed above from ascii file
  // if the array of points is not existing in the volume it is created and
  // the values are stored inside
  // returns the number of points
  if (!pFile) { return 0; }
  if (volu->getNumPoints()!=nPoints) { volu->createPoints(nPoints); }
  Double_t x,y;
  const Int_t maxbuf=155;
  Text_t buf[maxbuf];
  for(Int_t i=0; i<nPoints; i++) {
    pFile->getline(buf,maxbuf);
    sscanf(buf,"%lf%lf",&x,&y);
    volu->setPoint(i,x,y,0.0);
  }
  return nPoints;
}


Bool_t FairGeoSphe::writePoints(std::fstream* pFile,FairGeoVolume* volu)
{
  // writes the 3 'points' decribed above to ascii file
  if (!pFile) {
    return kFALSE;
  } else {
    Text_t buf[155];
    for(Int_t i=0; i<nPoints; i++) {
      FairGeoVector& v=*(volu->getPoint(i));
      sprintf(buf,"%9.3f%10.3f\n",v(0),v(1));
      pFile->write(buf,strlen(buf));
    }
    return kTRUE;
  }
}


void FairGeoSphe::printPoints(FairGeoVolume* volu)
{
  // prints volume points to screen
  for(Int_t i=0; i<nPoints; i++) {
    FairGeoVector& v=*(volu->getPoint(i));
    printf("%9.3f%10.3f\n",v(0),v(1));
  }
}


TArrayD* FairGeoSphe::calcVoluParam(FairGeoVolume* volu)
{
  // calculates the parameters needed to create the shape SPHE
  Double_t fac=10.;
  FairGeoVector& v0=*(volu->getPoint(0));
  FairGeoVector& v1=*(volu->getPoint(1));
  FairGeoVector& v2=*(volu->getPoint(2));
  param->AddAt(v0(0)/fac,0);
  param->AddAt(v0(1)/fac,1);
  param->AddAt(v1(0),2);
  param->AddAt(v1(1),3);
  param->AddAt(v2(0),4);
  param->AddAt(v2(1),5);
  return param;
}


void FairGeoSphe::calcVoluPosition(FairGeoVolume*,
                                   const FairGeoTransform& dTC,const FairGeoTransform& mTR)
{
  // calls the function posInMother(...) to calculate the position of the
  // volume in its mother
  center->clear();
  posInMother(dTC,mTR);
}