IFormFactor Class Reference

Description

Abstract base class for Born form factors.

In contrast to the generic IReParticle, a Born form factor does not depend on the incoming and outgoing wave vectors ki and kf, except through their difference, the scattering vector q=ki-kf.

Definition at line 36 of file IFormFactor.h.

Inheritance diagram for IFormFactor:

Collaboration diagram for IFormFactor:

Public Member Functions
	IFormFactor ()
	IFormFactor (const std::vector< double > &PValues)
	~IFormFactor () override
virtual double	bottomZ (const IRotation *rotation) const
virtual bool	canSliceAnalytically (const IRotation *rot) const
	Default implementation only allows rotations along z-axis. More...
void	checkNodeArgs () const
	Raises exception if a parameter value is invalid. More...
virtual std::string	className () const =0
	Returns the class name, to be hard-coded in each leaf class that inherits from INode. More...
IFormFactor *	clone () const override=0
	Returns a clone of this ISampleNode object. More...
std::vector< const Material * >	containedMaterials () const
	Returns set of unique materials contained in this ISampleNode. More...
virtual complex_t	formfactor_at_bottom (C3 q) const =0
virtual SpinMatrix	formfactor_pol (C3 q) const
	Returns scattering amplitude for complex scattering wavevector q=k_i-k_f in case of matrix interactions. Default implementation calls formfactor_at_bottom(q) and multiplies with the unit matrix. More...
bool	isMagnetic () const
	Returns true if there is any magnetic material in this ISampleNode. More...
virtual const Material *	material () const
	Returns nullptr, unless overwritten to return a specific material. More...
virtual std::vector< const INode * >	nodeChildren () const
	Returns all children. More...
std::vector< const INode * >	nodeOffspring () const
	Returns all descendants. More...
virtual std::vector< ParaMeta >	parDefs () const
	Returns the parameter definitions, to be hard-coded in each leaf class. More...
virtual std::string	pythonConstructor () const
	Creates the Python constructor of this class (or derived classes) More...
virtual double	radialExtension () const =0
	Returns the (approximate in some cases) radial size of the particle of this form factor's shape. This is used for SSCA calculations. More...
std::string	shapeName () const
virtual complex_t	theFF (const WavevectorInfo &wavevectors) const
virtual SpinMatrix	thePolFF (const WavevectorInfo &wavevectors) const
virtual double	topZ (const IRotation *rotation) const
virtual void	transferToCPP ()
	Used for Python overriding of clone (see swig/tweaks.py) More...
virtual double	volume () const

Protected Attributes
std::vector< double >	m_P
std::unique_ptr< IShape3D >	m_shape3D
	IShape3D object, used to retrieve vertices (which may be approximate in the case of round shapes). For soft particles, this will be a hard mean shape. More...

Constructor & Destructor Documentation

IFormFactor() [1/2]

IFormFactor::IFormFactor ( )

default

IFormFactor() [2/2]

IFormFactor::IFormFactor

(

const std::vector< double > &

PValues

)

Definition at line 26 of file IFormFactor.cpp.

    : ISampleNode(PValues)
{
}

~IFormFactor()

IFormFactor::~IFormFactor ( )

overridedefault

Member Function Documentation

bottomZ()

double IFormFactor::bottomZ ( const IRotation *  rotation ) const

virtual

Reimplemented in Sphere, IFormFactorPrism, and IFormFactorPolyhedron.

Definition at line 50 of file IFormFactor.cpp.

{
    if (!m_shape3D)
        throw std::runtime_error("Bug: Form factor has no m_shape3D, cannot compute bottom z");
    return PolyhedralUtil::BottomZ(m_shape3D->vertices(), rotation);
}

References PolyhedralUtil::BottomZ(), and m_shape3D.

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canSliceAnalytically()

bool IFormFactor::canSliceAnalytically ( const IRotation *  rot ) const

virtual

Default implementation only allows rotations along z-axis.

Reimplemented in Sphere.

Definition at line 64 of file IFormFactor.cpp.

{
    return !rotation || rotation->zInvariant();
}

References IRotation::zInvariant().

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checkNodeArgs()

void INode::checkNodeArgs ( ) const

inherited

Raises exception if a parameter value is invalid.

Definition at line 27 of file INode.cpp.

{
    size_t nP = m_P.size();
    if (parDefs().size() != nP) {
        std::cerr << "BUG in class " << className() << std::endl;
        std::cerr << "#m_P = " << nP << std::endl;
        std::cerr << "#PDf = " << parDefs().size() << std::endl;
        for (const ParaMeta& pm : parDefs())
            std::cerr << "  PDf: " << pm.name << std::endl;
        ASSERT(0);
    }
    ASSERT(parDefs().size() == nP);
    for (size_t i = 0; i < nP; ++i) {
        const ParaMeta pm = parDefs()[i];
 
        RealLimits limits = RealLimits::limitless();
        if (pm.vMin == -INF) {
            ASSERT(pm.vMax == +INF);
            // nothing to do
        } else if (pm.vMax == +INF) {
            ASSERT(pm.vMin == 0);
            limits = RealLimits::nonnegative();
        } else {
            limits = RealLimits::limited(pm.vMin, pm.vMax);
        }
        limits.check(pm.name, m_P[i]);
    }
}

References ASSERT, RealLimits::check(), INode::className(), INF, RealLimits::limited(), RealLimits::limitless(), INode::m_P, ParaMeta::name, RealLimits::nonnegative(), INode::parDefs(), ParaMeta::vMax, and ParaMeta::vMin.

Referenced by BarGauss::BarGauss(), BarLorentz::BarLorentz(), Bipyramid4::Bipyramid4(), Box::Box(), CantellatedCube::CantellatedCube(), Cone::Cone(), ConstantBackground::ConstantBackground(), CosineRippleBox::CosineRippleBox(), CosineRippleGauss::CosineRippleGauss(), CosineRippleLorentz::CosineRippleLorentz(), Cylinder::Cylinder(), DistributionCosine::DistributionCosine(), DistributionGate::DistributionGate(), DistributionGaussian::DistributionGaussian(), DistributionLogNormal::DistributionLogNormal(), DistributionLorentz::DistributionLorentz(), DistributionTrapezoid::DistributionTrapezoid(), Dodecahedron::Dodecahedron(), EllipsoidalCylinder::EllipsoidalCylinder(), FootprintGauss::FootprintGauss(), FootprintSquare::FootprintSquare(), FuzzySphere::FuzzySphere(), GaussSphere::GaussSphere(), HemiEllipsoid::HemiEllipsoid(), HollowSphere::HollowSphere(), HorizontalCylinder::HorizontalCylinder(), Icosahedron::Icosahedron(), LongBoxGauss::LongBoxGauss(), LongBoxLorentz::LongBoxLorentz(), PlatonicOctahedron::PlatonicOctahedron(), PlatonicTetrahedron::PlatonicTetrahedron(), Prism3::Prism3(), Prism6::Prism6(), Profile1DCauchy::Profile1DCauchy(), Profile1DCosine::Profile1DCosine(), Profile1DGate::Profile1DGate(), Profile1DGauss::Profile1DGauss(), Profile1DTriangle::Profile1DTriangle(), Profile1DVoigt::Profile1DVoigt(), Profile2DCauchy::Profile2DCauchy(), Profile2DCone::Profile2DCone(), Profile2DGate::Profile2DGate(), Profile2DGauss::Profile2DGauss(), Profile2DVoigt::Profile2DVoigt(), Pyramid2::Pyramid2(), Pyramid3::Pyramid3(), Pyramid4::Pyramid4(), Pyramid6::Pyramid6(), RotationEuler::RotationEuler(), RotationX::RotationX(), RotationY::RotationY(), RotationZ::RotationZ(), SawtoothRippleBox::SawtoothRippleBox(), SawtoothRippleGauss::SawtoothRippleGauss(), SawtoothRippleLorentz::SawtoothRippleLorentz(), Sphere::Sphere(), Spheroid::Spheroid(), TruncatedCube::TruncatedCube(), TruncatedSphere::TruncatedSphere(), and TruncatedSpheroid::TruncatedSpheroid().

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className()

virtual std::string INode::className ( ) const

pure virtualinherited

Returns the class name, to be hard-coded in each leaf class that inherits from INode.

Implemented in Particle, SphericalDetector, SpecularSimulation, ScatteringSimulation, OffspecSimulation, DepthProbeSimulation, PoissonBackground, ConstantBackground, GaussSphere, FuzzySphere, RotationEuler, RotationZ, RotationY, RotationX, IdentityRotation, ParticleCoreShell, ParticleComposition, MesoCrystal, Crystal, MultiLayer, Layer, Lattice3D, HexagonalLattice2D, SquareLattice2D, BasicLattice2D, LayerRoughness, LayerInterface, TruncatedSpheroid, TruncatedSphere, TruncatedCube, Spheroid, Sphere, SawtoothRippleLorentz, SawtoothRippleGauss, SawtoothRippleBox, Pyramid6, Pyramid4, Pyramid3, Pyramid2, Prism6, Prism3, PlatonicTetrahedron, PlatonicOctahedron, LongBoxLorentz, LongBoxGauss, Icosahedron, HorizontalCylinder, HollowSphere, HemiEllipsoid, EllipsoidalCylinder, Dodecahedron, Cylinder, CosineRippleLorentz, CosineRippleGauss, CosineRippleBox, Cone, CantellatedCube, Box, Bipyramid4, BarLorentz, BarGauss, Profile2DVoigt, Profile2DCone, Profile2DGate, Profile2DGauss, Profile2DCauchy, Profile1DVoigt, Profile1DCosine, Profile1DTriangle, Profile1DGate, Profile1DGauss, Profile1DCauchy, MisesGaussPeakShape, MisesFisherGaussPeakShape, LorentzFisherPeakShape, GaussFisherPeakShape, IsotropicLorentzPeakShape, IsotropicGaussPeakShape, ParticleLayout, InterferenceTwin, InterferenceRadialParaCrystal, InterferenceNone, InterferenceHardDisk, InterferenceFinite3DLattice, InterferenceFinite2DLattice, Interference3DLattice, Interference2DSuperLattice, Interference2DParaCrystal, Interference2DLattice, Interference1DLattice, DistributionTrapezoid, DistributionCosine, DistributionLogNormal, DistributionGaussian, DistributionLorentz, DistributionGate, ResolutionFunction2DGaussian, ConvolutionDetectorResolution, PolFilter, RectangularDetector, FootprintSquare, FootprintGauss, and Beam.

Referenced by INode::checkNodeArgs(), ExemplarySamples::createBasic2DParaCrystalWithFTDis(), IProfile1D::pythonConstructor(), IProfile2D::pythonConstructor(), pythonConstructor(), and shapeName().

clone()

IFormFactor* IFormFactor::clone ( ) const

overridepure virtual

Returns a clone of this ISampleNode object.

Implements ISampleNode.

Implemented in GaussSphere, FuzzySphere, TruncatedSpheroid, TruncatedSphere, TruncatedCube, Spheroid, Sphere, SawtoothRippleLorentz, SawtoothRippleGauss, SawtoothRippleBox, Pyramid6, Pyramid4, Pyramid3, Pyramid2, Prism6, Prism3, PlatonicTetrahedron, PlatonicOctahedron, LongBoxLorentz, LongBoxGauss, Icosahedron, HorizontalCylinder, HollowSphere, HemiEllipsoid, EllipsoidalCylinder, Dodecahedron, Cylinder, CosineRippleLorentz, CosineRippleGauss, CosineRippleBox, Cone, CantellatedCube, Box, Bipyramid4, BarLorentz, and BarGauss.

containedMaterials()

std::vector< const Material * > ISampleNode::containedMaterials ( ) const

inherited

Returns set of unique materials contained in this ISampleNode.

Definition at line 25 of file ISampleNode.cpp.

{
    std::vector<const Material*> result;
    if (const Material* p_material = material())
        result.push_back(p_material);
    for (const auto* child : nodeChildren()) {
        if (const auto* sample = dynamic_cast<const ISampleNode*>(child)) {
            for (const Material* p_material : sample->containedMaterials())
                result.push_back(p_material);
        }
    }
    return result;
}

References ISampleNode::material(), and INode::nodeChildren().

Referenced by SampleUtils::Multilayer::ContainsCompatibleMaterials(), SampleToPython::initLabels(), and ISampleNode::isMagnetic().

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formfactor_at_bottom()

virtual complex_t IFormFactor::formfactor_at_bottom ( C3  q ) const

pure virtual

Implemented in GaussSphere, FuzzySphere, TruncatedSpheroid, TruncatedSphere, Spheroid, Sphere, LongBoxLorentz, LongBoxGauss, IProfileRipple, IFormFactorPrism, IFormFactorPolyhedron, HorizontalCylinder, HollowSphere, HemiEllipsoid, EllipsoidalCylinder, Cylinder, Cone, and Box.

Referenced by formfactor_pol(), theFF(), and volume().

formfactor_pol()

SpinMatrix IFormFactor::formfactor_pol ( C3  q ) const

virtual

Returns scattering amplitude for complex scattering wavevector q=k_i-k_f in case of matrix interactions. Default implementation calls formfactor_at_bottom(q) and multiplies with the unit matrix.

Definition at line 78 of file IFormFactor.cpp.

{
    return formfactor_at_bottom(q) * SpinMatrix::One();
}

References formfactor_at_bottom(), and SpinMatrix::One().

Referenced by thePolFF().

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isMagnetic()

bool ISampleNode::isMagnetic ( ) const

inherited

Returns true if there is any magnetic material in this ISampleNode.

Definition at line 39 of file ISampleNode.cpp.

{
    const auto materials = containedMaterials();
    return std::any_of(materials.cbegin(), materials.cend(),
                       [](const Material* mat) { return mat->isMagneticMaterial(); });
}

References ISampleNode::containedMaterials().

Referenced by reSample::make().

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material()

virtual const Material* ISampleNode::material ( ) const

inlinevirtualinherited

Returns nullptr, unless overwritten to return a specific material.

Reimplemented in Particle, and Layer.

Definition at line 36 of file ISampleNode.h.

{ return nullptr; }

Referenced by ISampleNode::containedMaterials().

nodeChildren()

std::vector< const INode * > INode::nodeChildren ( ) const

virtualinherited

Returns all children.

Reimplemented in ISimulation2D, ISimulation, ParticleCoreShell, ParticleComposition, Particle, MesoCrystal, IParticle, Crystal, MultiLayer, Layer, LayerInterface, ParticleLayout, InterferenceRadialParaCrystal, InterferenceFinite3DLattice, InterferenceFinite2DLattice, Interference3DLattice, Interference2DSuperLattice, Interference2DParaCrystal, Interference2DLattice, Interference1DLattice, ConvolutionDetectorResolution, IDetector, and Beam.

Definition at line 56 of file INode.cpp.

{
    return {};
}

Referenced by NodeUtils::AllDescendantsOfType(), NodeUtils::ChildNodesOfType(), ISampleNode::containedMaterials(), and INode::nodeOffspring().

nodeOffspring()

std::vector< const INode * > INode::nodeOffspring ( ) const

inherited

Returns all descendants.

Definition at line 61 of file INode.cpp.

{
    std::vector<const INode*> result;
    result.push_back(this);
    for (const auto* child : nodeChildren()) {
        for (const auto* p : child->nodeOffspring())
            result.push_back(p);
    }
    return result;
}

References INode::nodeChildren().

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parDefs()

virtual std::vector<ParaMeta> INode::parDefs ( ) const

inlinevirtualinherited

Returns the parameter definitions, to be hard-coded in each leaf class.

Reimplemented in ConstantBackground, GaussSphere, FuzzySphere, RotationEuler, RotationZ, RotationY, RotationX, Crystal, Layer, HexagonalLattice2D, SquareLattice2D, BasicLattice2D, LayerRoughness, TruncatedSpheroid, TruncatedSphere, TruncatedCube, Spheroid, Sphere, SawtoothRippleLorentz, SawtoothRippleGauss, SawtoothRippleBox, Pyramid6, Pyramid4, Pyramid3, Pyramid2, Prism6, Prism3, PlatonicTetrahedron, PlatonicOctahedron, LongBoxLorentz, LongBoxGauss, Icosahedron, HorizontalCylinder, HollowSphere, HemiEllipsoid, EllipsoidalCylinder, Dodecahedron, Cylinder, CosineRippleLorentz, CosineRippleGauss, CosineRippleBox, Cone, CantellatedCube, Box, Bipyramid4, BarLorentz, BarGauss, Profile2DVoigt, Profile2DCone, Profile2DGate, Profile2DGauss, Profile2DCauchy, Profile1DVoigt, Profile1DCosine, Profile1DTriangle, Profile1DGate, Profile1DGauss, Profile1DCauchy, MisesGaussPeakShape, MisesFisherGaussPeakShape, LorentzFisherPeakShape, GaussFisherPeakShape, IsotropicLorentzPeakShape, IsotropicGaussPeakShape, ParticleLayout, InterferenceTwin, InterferenceRadialParaCrystal, InterferenceHardDisk, Interference2DSuperLattice, Interference2DParaCrystal, Interference1DLattice, DistributionTrapezoid, DistributionCosine, DistributionLogNormal, DistributionGaussian, DistributionLorentz, DistributionGate, ResolutionFunction2DGaussian, PolFilter, FootprintSquare, and FootprintGauss.

Definition at line 51 of file INode.h.

{ return {}; }

Referenced by INode::checkNodeArgs(), and pythonConstructor().

pythonConstructor()

std::string IFormFactor::pythonConstructor ( ) const

virtual

Creates the Python constructor of this class (or derived classes)

Definition at line 69 of file IFormFactor.cpp.

{
    std::vector<std::pair<double, std::string>> arguments;
    for (size_t i = 0; i < parDefs().size(); i++)
        arguments.emplace_back(m_P[i], parDefs()[i].unit);
 
    return Py::Fmt::printFunction(className(), arguments);
}

References INode::className(), INode::m_P, INode::parDefs(), and Py::Fmt::printFunction().

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radialExtension()

virtual double IFormFactor::radialExtension ( ) const

pure virtual

Returns the (approximate in some cases) radial size of the particle of this form factor's shape. This is used for SSCA calculations.

Implemented in GaussSphere, FuzzySphere, TruncatedSpheroid, TruncatedSphere, Spheroid, Sphere, LongBoxLorentz, LongBoxGauss, IProfileRipple, IFormFactorPrism, IFormFactorPolyhedron, HorizontalCylinder, HollowSphere, HemiEllipsoid, EllipsoidalCylinder, Cylinder, Cone, and Box.

shapeName()

std::string IFormFactor::shapeName

(

)

const

Definition at line 33 of file IFormFactor.cpp.

{
    if (className().substr(0, 10) == "FormFactor")
        return className().substr(10);
    return className();
}

References INode::className().

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theFF()

complex_t IFormFactor::theFF ( const WavevectorInfo &  wavevectors ) const

virtual

Definition at line 40 of file IFormFactor.cpp.

{
    return formfactor_at_bottom(wavevectors.getQ());
}

References formfactor_at_bottom(), and WavevectorInfo::getQ().

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thePolFF()

SpinMatrix IFormFactor::thePolFF ( const WavevectorInfo &  wavevectors ) const

virtual

Definition at line 45 of file IFormFactor.cpp.

{
    return formfactor_pol(wavevectors.getQ());
}

References formfactor_pol(), and WavevectorInfo::getQ().

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topZ()

double IFormFactor::topZ ( const IRotation *  rotation ) const

virtual

Reimplemented in Sphere, IFormFactorPrism, and IFormFactorPolyhedron.

Definition at line 57 of file IFormFactor.cpp.

{
    if (!m_shape3D)
        throw std::runtime_error("Bug: Form factor has no m_shape3D, cannot compute top z");
    return PolyhedralUtil::TopZ(m_shape3D->vertices(), rotation);
}

References m_shape3D, and PolyhedralUtil::TopZ().

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transferToCPP()

virtual void ICloneable::transferToCPP ( )

inlinevirtualinherited

Used for Python overriding of clone (see swig/tweaks.py)

Definition at line 32 of file ICloneable.h.

volume()

double IFormFactor::volume ( ) const

virtual

Reimplemented in IFormFactorPrism, IFormFactorPolyhedron, and Box.

Definition at line 83 of file IFormFactor.cpp.

{
    return std::abs(formfactor_at_bottom(C3()));
}

References formfactor_at_bottom().

Referenced by Compute::Slicing::createParticleInSlice().

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Member Data Documentation

m_P

std::vector<double> INode::m_P

protectedinherited

Definition at line 63 of file INode.h.

Referenced by IFootprintFactor::IFootprintFactor(), INode::checkNodeArgs(), IProfile1D::pythonConstructor(), IProfile2D::pythonConstructor(), pythonConstructor(), Profile1DVoigt::pythonConstructor(), and Profile2DVoigt::pythonConstructor().

m_shape3D

std::unique_ptr<IShape3D> IFormFactor::m_shape3D

protected

IShape3D object, used to retrieve vertices (which may be approximate in the case of round shapes). For soft particles, this will be a hard mean shape.

Definition at line 74 of file IFormFactor.h.

Referenced by Cone::Cone(), Cylinder::Cylinder(), EllipsoidalCylinder::EllipsoidalCylinder(), FuzzySphere::FuzzySphere(), HemiEllipsoid::HemiEllipsoid(), HollowSphere::HollowSphere(), HorizontalCylinder::HorizontalCylinder(), ICosineRipple::ICosineRipple(), IProfileRectangularRipple::IProfileRectangularRipple(), ISawtoothRipple::ISawtoothRipple(), LongBoxGauss::LongBoxGauss(), LongBoxLorentz::LongBoxLorentz(), Spheroid::Spheroid(), TruncatedSphere::TruncatedSphere(), TruncatedSpheroid::TruncatedSpheroid(), bottomZ(), and topZ().

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The documentation for this class was generated from the following files:

• /home/build/builds/o5h8MZZm/0/mlz/bornagain/Sample/Particle/IFormFactor.h
• /home/build/builds/o5h8MZZm/0/mlz/bornagain/Sample/Particle/IFormFactor.cpp