DDMaterial Class Reference

DDMaterial is used to define and access material information. More...

#include <DDMaterial.h>

Inheritance diagram for DDMaterial:

Public Types
typedef std::vector< std::pair< DDMaterial, double > >	FractionV
Public Types inherited from DDBase< DDName, DDI::Material * >
typedef std::pair< const DDName *, bool >	def_type
typedef DDI::Material *	pimpl_type
typedef DDI::rep_type< DDName, pimpl_type > *	prep_type
typedef DDI::Singleton< DDI::Store< DDName, DDI::Material * > >	StoreT

Public Member Functions
double	a () const
	returns the atomic mass More...
int	addMaterial (const DDMaterial &m, double fm)
	adds a material to the mixture proportional to its fraction-mass fm. More...
FractionV::value_type	constituent (int i) const
	returns the i-th compound material and its fraction-mass More...
	DDMaterial ()
	Creates a uninitialized reference-object (see DDLogicalPart documentation for details on reference objects) More...
	DDMaterial (const DDName &name)
	Creates a initialized reference-object or a reference to an allready defined material. More...
	DDMaterial (const DDName &name, double z, double a, double d)
	Constructor for construction of an elementary material. More...
	DDMaterial (const DDName &name, double density)
	Constructor for mixtures. More...
double	density () const
	returns the density More...
int	noOfConstituents () const
	returns the number of compound materials or 0 for elementary materials More...
double	z () const
	retruns the atomic number More...
Public Member Functions inherited from DDBase< DDName, DDI::Material * >
	DDBase ()
const DDName &	ddname () const
def_type	isDefined () const
bool	isValid () const
	true, if the wrapped pointer is valid More...
const DDName &	name () const
	operator bool () const
bool	operator< (const DDBase &b) const
bool	operator== (const DDBase &b) const
bool	operator> (const DDBase &b) const
const DDI::rep_traits< DDName, DDI::Material * >::reference	rep () const
DDI::rep_traits< DDName, DDI::Material * >::reference	rep ()
std::string	toString () const
const DDI::rep_traits< DDName, DDI::Material * >::reference	val () const
const DDI::rep_traits< DDName, DDI::Material * >::reference	val ()
virtual	~DDBase ()

Friends
std::ostream &	operator<< (std::ostream &, const DDMaterial &)

Additional Inherited Members
Static Public Member Functions inherited from DDBase< DDName, DDI::Material * >
static auto	begin ()
static void	clear ()
static auto	end ()
static size_t	size ()
Protected Attributes inherited from DDBase< DDName, DDI::Material * >
prep_type	prep_

Detailed Description

DDMaterial is used to define and access material information.

An object of this class is a reference-object and thus leightweighted. It is uniquely identified by its DDName. Further details concerning reference-objects can be found in the documentation of DDLogicalPart.

A DDMaterial can recursively consist of compound materials (which are DDMaterials as well). Materials consisting of compound materials are called mixtures. Mixtures are defined by their Materials which do not consist of compound materials are called elementary materials.

To define an elementray material, use it like this:

DDMaterial hydrogen("Hydrogen", 
                    double z=1, 
        double a=1.1*g/mole, 
        density=2*g/cm3);

To define a mixture:

DDMaterial mixt("Mix", double density = 5*g/cm3);
mixt.addMaterial(hydrogen,0.3);
// code for additional compounds belonging to the mixture ...

Note the usage of CLHEP/SystemOfUnits to specify the units of the quantities making up a material.

Definition at line 41 of file DDMaterial.h.

Member Typedef Documentation

typedef std::vector<std::pair<DDMaterial,double> > DDMaterial::FractionV

Definition at line 46 of file DDMaterial.h.

Constructor & Destructor Documentation

DDMaterial::DDMaterial

(

)

Creates a uninitialized reference-object (see DDLogicalPart documentation for details on reference objects)

Definition at line 16 of file DDMaterial.cc.

: DDBase<DDName,Material*>() { }

DDMaterial::DDMaterial

(

const DDName &

name

)

Creates a initialized reference-object or a reference to an allready defined material.

If a DDMaterial with name was already defined, this constructor creates a reference object to the defined material. Otherwise it creates a (default) initialized reference-object to a material with DDName name.

For further details concerning the usage of reference-objects refere to the documentation of DDLogicalPart.

Definition at line 27 of file DDMaterial.cc.

References DDI::Singleton< I >::instance(), and DDBase< DDName, DDI::Material * >::prep_.

                                          : DDBase<DDName,Material*>()
{ 
  prep_ = StoreT::instance().create(name);
}

DDMaterial::DDMaterial	(	const DDName &	name,
		double	z,
		double	a,
		double	d
	)

Constructor for construction of an elementary material.

• z atomic number
• a atomic mass
• density density

Example:

DDMaterial hydrogen("Hydrogen", 
                     double z=1, 
                 double a=1.1*g/mole, 
                     density=2*g/cm3);

Definition at line 46 of file DDMaterial.cc.

References DDI::Singleton< I >::instance(), g4SimHits_cfi::Material, and DDBase< DDName, DDI::Material * >::prep_.

 : DDBase<DDName,Material*>()
{ 
  prep_ = StoreT::instance().create(name, new Material(z, a, d));
}

DDMaterial::DDMaterial	(	const DDName &	name,
		double	density
	)

Constructor for mixtures.

For a mixture material it is sufficient to specify the density of the mixture (in addition to the name). The compounds are added by using the addMaterial(..) method.

The result of this constructor is a reference-object. One can use the mixture material immidiately (without specifying the compund materials). Compound materials can be added at any later stage.

For further details concerning the usage of reference-objects refere to the documentation of DDLogicalPart.

Definition at line 65 of file DDMaterial.cc.

References DDI::Singleton< I >::instance(), g4SimHits_cfi::Material, and DDBase< DDName, DDI::Material * >::prep_.

 : DDBase<DDName,Material*>()
{ 
  prep_ = StoreT::instance().create(name, new Material(0,0,density));
}

Member Function Documentation

double DDMaterial::a

(

)

const

returns the atomic mass

Definition at line 97 of file DDMaterial.cc.

References DDBase< DDName, DDI::Material * >::rep().

Referenced by DDG4Builder::convertMaterial(), TGeoMgrFromDdd::createMaterial(), TGeoFromDddService::createMaterial(), DDCheckMaterial(), density(), DDHtmlMaDetails::details(), DDCoreToDDXMLOutput::material(), and DDStreamer::materials_write().

{
  return rep().a(); 
}

int DDMaterial::addMaterial	(	const DDMaterial &	m,
		double	fm
	)

adds a material to the mixture proportional to its fraction-mass fm.

The fraction-masses of all compounds must sum up to 1

Definition at line 75 of file DDMaterial.cc.

References DDBase< N, C >::ddname(), DDBase< DDName, DDI::Material * >::ddname(), Exception, and DDBase< DDName, DDI::Material * >::rep().

Referenced by DDStreamer::materials_read(), DDLCompositeMaterial::processElement(), and regressionTest_setup().

{  
  if (m.ddname() == ddname()) {
    throw cms::Exception("DDException") << "DDMaterial::addMaterial(..): name-clash\n        trying to add material " << m << " to itself! ";
  }  
  rep().addMaterial(m,fm);
  return rep().noOfConstituents();
}

DDMaterial::FractionV::value_type DDMaterial::constituent

(

int

i

)

const

returns the i-th compound material and its fraction-mass

Definition at line 91 of file DDMaterial.cc.

References DDBase< DDName, DDI::Material * >::rep().

Referenced by OutputMagneticFieldDDToDDL::addToMatStore(), OutputDDToDDL::addToMatStore(), DDG4Builder::convertMaterial(), TGeoMgrFromDdd::createMaterial(), TGeoFromDddService::createMaterial(), DDCheckMaterial(), density(), DDHtmlMaDetails::details(), DDCoreToDDXMLOutput::material(), and DDStreamer::materials_write().

{ 
  return rep().constituent(i);
}

double DDMaterial::density

(

)

const

returns the density

Definition at line 109 of file DDMaterial.cc.

References a(), constituent(), density(), f, g, mps_fire::i, hcalDigis_cfi::level, DDBase< N, C >::name(), noOfConstituents(), DDBase< DDName, DDI::Material * >::rep(), alignCSCRings::s, AlCaHLTBitMon_QueryRunRegistry::string, and z().

Referenced by DDG4Builder::convertMaterial(), TGeoMgrFromDdd::createMaterial(), TGeoFromDddService::createMaterial(), DDCheckMaterial(), density(), DDHtmlMaDetails::details(), DDCoreToDDXMLOutput::material(), DDStreamer::materials_write(), and DDCompactViewImpl::weight().

{
  return rep().density(); 
}

int DDMaterial::noOfConstituents

(

)

const

returns the number of compound materials or 0 for elementary materials

Definition at line 85 of file DDMaterial.cc.

References DDBase< DDName, DDI::Material * >::rep().

Referenced by OutputMagneticFieldDDToDDL::addToMatStore(), OutputDDToDDL::addToMatStore(), DDG4Builder::convertMaterial(), TGeoMgrFromDdd::createMaterial(), TGeoFromDddService::createMaterial(), DDCheckMaterial(), density(), DDHtmlMaDetails::details(), DDCoreToDDXMLOutput::material(), and DDStreamer::materials_write().

{
   return rep().noOfConstituents();
}

double DDMaterial::z

(

)

const

retruns the atomic number

Definition at line 103 of file DDMaterial.cc.

References DDBase< DDName, DDI::Material * >::rep().

Referenced by DDG4Builder::convertMaterial(), TGeoMgrFromDdd::createMaterial(), TGeoFromDddService::createMaterial(), DDCheckMaterial(), density(), DDHtmlMaDetails::details(), DDCoreToDDXMLOutput::material(), DDStreamer::materials_write(), geometryXMLparser.Alignable::pos(), and ntupleDataFormat._HitObject::r3D().

{
  return rep().z(); 
}

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  os, const DDMaterial &  mat  )

friend

Definition at line 137 of file DDMaterial.cc.

{ 
  return doStream(os, mat, 0);
}