/data/refman/pasoursint/CMSSW_5_3_0/src/DetectorDescription/Parser/src/DDDividedGeometryObject.cc

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//
// ********************************************************************
// 25.04.04 - M.Case ported algorithm from G4VDivisionParameterisation.cc. to 
//            DDD version
// ********************************************************************

#include "DetectorDescription/Parser/src/DDDividedGeometryObject.h"
#include "DetectorDescription/Base/interface/DDdebug.h"
#include "DetectorDescription/Core/interface/DDLogicalPart.h"

#include <Math/RotationZ.h>

DDDividedGeometryObject::DDDividedGeometryObject( const DDDivision& div, DDCompactView* cpv ) 
  : div_( div ),
    ftype_(),
    compNDiv_( div.nReplicas()),
    compWidth_( div.width()),
    divisionType_( DivNDIVandWIDTH ),
    theVoluFirstCopyNo_( 1 ),
    cpv_( cpv )
{
  if( div_.nReplicas() == 0 || div_.width() < tolerance())
  {
    if( div_.width() < tolerance())
      divisionType_ = DivNDIV;
    else 
      divisionType_ = DivWIDTH;
  } 
  DCOUT_V( 'P', " DDDividedGeometryObject Divisions " << div_ << std::endl );
}

DDDividedGeometryObject::~DDDividedGeometryObject( void )
{}

DDRotationMatrix*
DDDividedGeometryObject::changeRotMatrix( double rotZ ) const
{
  DDRotationMatrix * rm = new DDRotationMatrix(ROOT::Math::RotationZ(rotZ));
  return rm;
}

int
DDDividedGeometryObject::calculateNDiv( double motherDim, double width, double offset ) const
{
  DCOUT_V('P', " DDDividedGeometryObject::calculateNDiv: " << ( motherDim - offset ) / width << " Motherdim: " <<  motherDim << ", Offset: " << offset << ", Width: " << width << std::endl);
  return int( ( motherDim - offset ) / width );
}

double
DDDividedGeometryObject::calculateWidth( double motherDim, int nDiv, double offset ) const
{ 
  DCOUT_V('P', " DDDividedGeometryObject::calculateWidth: " << ( motherDim - offset ) / nDiv << ", Motherdim: " << motherDim << ", Offset: " << offset << ", Number of divisions: " << nDiv << std::endl);

  return ( motherDim - offset ) / nDiv;
}

void
DDDividedGeometryObject::checkParametersValidity( void )
{
  double maxPar = getMaxParameter();
  checkOffset( maxPar );
  checkNDivAndWidth( maxPar );
  if (!div_.parent().isDefined().second) {
    std::string s = "DDDividedGeometryObject::checkParametersValidity() :";
    s+= "\n ERROR - the LogicalPart of the parent must be ";
    s+= "\n         defined before a division can occur.";
    s+= "\n         Parent= " + div_.parent().toString();
    throw cms::Exception("DDException") << s;
  }
}

void
DDDividedGeometryObject::checkOffset( double maxPar )
{
  if( div_.offset() >= maxPar )
  {
    DCOUT_V('P', "DDDividedGeometryObject::checkOffset() Division of LogicalPart " << div_.parent() << " offset=" << div_.offset() << " maxPar=" << maxPar << "\n");
    std::string s = "DDDividedGeometryObject::checkOffset() IllegalConstruct";
    s += "\nERROR - DDDividedGeometryObject::checkOffset()";
    s += "\n        failed.";
    s += "  Too big an offset.";
    throw cms::Exception("DDException") << s;
  }
}

void
DDDividedGeometryObject::checkNDivAndWidth( double maxPar )
{
  if( (divisionType_ == DivNDIVandWIDTH)
      && (div_.offset() + compWidth_*compNDiv_ - maxPar > tolerance() ) )
  {
    std::string s = "ERROR - DDDividedGeometryObject::checkNDivAndWidth()";
    s+= "\n        Division of LogicalPart " + div_.parent();
    s+= " has too big an offset.";
    DCOUT_V('P', "DDDividedGeometryObject::checkNDivAndWidth has computed div_.offset() + compWidth_*compNDiv_ - maxPar =" << div_.offset() + compWidth_*compNDiv_ - maxPar << " and tolerance()=" << tolerance());
    std::cout << compWidth_ << std::endl;
    throw cms::Exception("DDException") << s;
  }
}

const double
DDDividedGeometryObject::tolerance( void )
{
  // this can come from some global tolerance if you want.
  static const double tol = 1.0/1000.00;
  return tol;
}

void
DDDividedGeometryObject::setType( const std::string& s) 
{
  ftype_ = s;
}

const std::string&
DDDividedGeometryObject::getType( void ) const
{
  return ftype_;
}

void
DDDividedGeometryObject::execute( void )
{
  DCOUT_V( 'D', "about to make " <<  compNDiv_ << " divisions." << std::endl );
  for( int i = theVoluFirstCopyNo_; i < compNDiv_+theVoluFirstCopyNo_; ++i )
  {
    DCOUT_V( 'D',  "Parent Volume: " << div_.parent() << std::endl );
    DCOUT_V( 'D',  "Child Volume: " << makeDDLogicalPart(i) << std::endl );
    DCOUT_V( 'D',  "   copyNo:" << i << std::endl );
    DCOUT_V( 'D',  "   Translation: " << makeDDTranslation(i) << std::endl );
    DCOUT_V( 'D',  "   rotation=" << makeDDRotation(i) << std::endl );

    cpv_->position( makeDDLogicalPart( i ),
                    div_.parent(),
                    i,
                    makeDDTranslation( i ),
                    makeDDRotation( i ),
                    &div_ );
  }
}

double
DDDividedGeometryObject::getMaxParameter( void ) const
{
  return 0.0;
}

DDRotation
DDDividedGeometryObject::makeDDRotation( const int copyNo ) const
{
  return DDRotation();
}

DDTranslation
DDDividedGeometryObject::makeDDTranslation( const int copyNo ) const
{
  return DDTranslation();
}

DDLogicalPart
DDDividedGeometryObject::makeDDLogicalPart( const int copyNo ) const
{
  // just return the parent... this is USELESS
  return div_.parent();
}