DDI::Cons Class Reference

#include <Cons.h>

Inheritance diagram for DDI::Cons:

Public Member Functions
	Cons (double zhalf, double rInMinusZ, double rOutMinusZ, double rInPlusZ, double rOutPlusZ, double startPhi, double deltaPhi)
void	stream (std::ostream &) const override
double	volume () const override
Public Member Functions inherited from DDI::Solid
const std::vector< double > &	parameters () const
void	setParameters (std::vector< double > const &p)
DDSolidShape	shape () const
	Solid ()
	Solid (DDSolidShape shape)
virtual	~Solid ()

Additional Inherited Members
Protected Attributes inherited from DDI::Solid
std::vector< double >	p_
DDSolidShape	shape_

Detailed Description

Definition at line 9 of file Cons.h.

Constructor & Destructor Documentation

DDI::Cons::Cons	(	double	zhalf,
		double	rInMinusZ,
		double	rOutMinusZ,
		double	rInPlusZ,
		double	rOutPlusZ,
		double	startPhi,
		double	deltaPhi
	)

Definition at line 14 of file Cons.cc.

References ddcons, and DDI::Solid::p_.

    : Solid(DDSolidShape::ddcons) {
  p_.emplace_back(zhalf);
  p_.emplace_back(rInMinusZ);
  p_.emplace_back(rOutMinusZ);
  p_.emplace_back(rInPlusZ);
  p_.emplace_back(rOutPlusZ);
  p_.emplace_back(startPhi);
  p_.emplace_back(deltaPhi);
}

Member Function Documentation

void DDI::Cons::stream ( std::ostream &  os ) const

overridevirtual

Reimplemented from DDI::Solid.

Definition at line 31 of file Cons.cc.

References geant_units::operators::convertMmToCm(), and angle_units::operators::convertRadToDeg().

                                         {
  os << " zhalf=" << convertMmToCm(p_[0]) << " rIn-Z=" << convertMmToCm(p_[1]) << " rOut-Z=" << convertMmToCm(p_[2])
     << " rIn+Z=" << convertMmToCm(p_[3]) << " rOut+Z=" << convertMmToCm(p_[4])
     << " startPhi=" << convertRadToDeg(p_[5]) << " deltaPhi=" << convertRadToDeg(p_[6]);
}

double DDI::Cons::volume ( ) const

overridevirtual

Reimplemented from DDI::Solid.

Definition at line 37 of file Cons.cc.

References funct::abs(), and srCondWrite_cfg::deltaPhi.

                             {
  /* zhalf is the half length of the cone,
     phiTo is always clockwise rotated from phiFrom 
     rInMinusZ is always smaller than rOutMinusZ (same for r*PlusZ)
     They are the distances relative to the rotation axes */

  /* calculation normalize from 0 to z */

  /* The function f=rInMinusZ+((rInPlusZ-rInMinusZ)/z)*x defines
     the radius of the the rotation from 0 to z. Raised to the power
     of 2 integrated on x from 0 to z. Multiplied by pi, gives the
     volume that needs to substracted from the other volume */

  /* f^2=rInMinusZ*rInMinusZ+2*rInMinusZ*((rInPlusZ-rInMinusZ)/z)*x+((rInPlusZ-rInMinusZ)*(rInPlusZ-rInMinusZ)*x*x)/(z*z) */

  /* primitive of f^2 is: rInMinusZ*rInMinusZ*x+rInMinusZ*((rInPlusZ-rInMinusZ)/z)*(x*x)+(rInPlusZ-rInMinusZ)*(rInPlusZ-rInMinusZ)*(x*x*x)/(3*z*z) */

  /*integration from 0 to z yields: pi*( rInMinusZ*rInMinusZ*z+rInMinusZ*(rInPlusZ-rInMinusZ)*z+((rInPlusZ-rInMinusZ)*(rInPlusZ-rInMinusZ)*z)/(3) ) */

  double zhalf = p_[0];
  double rInMinusZ = p_[1];
  double rOutMinusZ = p_[2];
  double rInPlusZ = p_[3];
  double rOutPlusZ = p_[4];
  //double phiFrom=p_[5]/rad;
  double deltaPhi = std::abs(p_[6]);
  double z = 2 * zhalf;

  double volume1 = 1_pi * (rInPlusZ * rInPlusZ + rInMinusZ * rInMinusZ + rInMinusZ * rInPlusZ) * z / 3;

  double volume2 = 1_pi * (rOutPlusZ * rOutPlusZ + rOutMinusZ * rOutMinusZ + rOutMinusZ * rOutPlusZ) * z / 3;

  double slice = deltaPhi / (2_pi);
  double volume = slice * (volume2 - volume1);

  return volume;
}