SymmetryElementMirrorGenerator also inherits from SymmetryElementWithAxisGenerator. More...

#include <SymmetryElementFactory.h>

Inheritance diagram for Mantid::Geometry::SymmetryElementMirrorGenerator:

Public Member Functions
bool	canProcess (const SymmetryOperation &operation) const override
	Checks that the trace of the matrix is 1 and the determinant is -1. More...

SymmetryElement_sptr	generateElement (const SymmetryOperation &operation) const override
	Generates an instance of SymmetryElementMirror with the corresponding symbol, axis and translation vector. More...

Public Member Functions inherited from Mantid::Geometry::AbstractSymmetryElementGenerator
virtual bool	canProcess (const SymmetryOperation &operation) const =0
	Should return true if the generator can produce a valid SymmetryElement from the provided SymmetryOperation. More...

virtual SymmetryElement_sptr	generateElement (const SymmetryOperation &operation) const =0
	Must generate a valid SymmetryElement from the given operation. More...

virtual	~AbstractSymmetryElementGenerator ()=default

Protected Member Functions
std::string	determineSymbol (const SymmetryOperation &operation) const override
	Determines the symbol from the translation vector using a map. More...

Protected Member Functions inherited from Mantid::Geometry::SymmetryElementWithAxisGenerator
V3R	determineAxis (const Kernel::IntMatrix &matrix) const
	Returns the symmetry axis for the given matrix. More...

virtual std::string	determineSymbol (const SymmetryOperation &operation) const =0

V3R	determineTranslation (const SymmetryOperation &operation) const
	Returns the reduced vector of the operation. More...

Static Protected Attributes
static std::map< V3R, std::string >	g_glideSymbolMap

Detailed Description

SymmetryElementMirrorGenerator also inherits from SymmetryElementWithAxisGenerator.

In addition to that, it determines the Herrman-Mauguin symbol of the symmetry element. According to the International Tables for Crystallography there are some unconventional glide planes which do not have a dedicated symbol. Instead, these are labeled with the letter "g".

Definition at line 137 of file SymmetryElementFactory.h.

Member Function Documentation

◆ canProcess()

bool Mantid::Geometry::SymmetryElementMirrorGenerator::canProcess ( const SymmetryOperation & operation ) const

overridevirtual

Checks that the trace of the matrix is 1 and the determinant is -1.

Implements Mantid::Geometry::AbstractSymmetryElementGenerator.

Definition at line 267 of file SymmetryElementFactory.cpp.

References Mantid::Kernel::Matrix< T >::determinant(), Mantid::Geometry::SymmetryOperation::matrix(), and Mantid::Kernel::Matrix< T >::Trace().

◆ determineSymbol()

std::string Mantid::Geometry::SymmetryElementMirrorGenerator::determineSymbol ( const SymmetryOperation & operation ) const

overrideprotectedvirtual

Determines the symbol from the translation vector using a map.

Implements Mantid::Geometry::SymmetryElementWithAxisGenerator.

Definition at line 274 of file SymmetryElementFactory.cpp.

References Mantid::Geometry::SymmetryElementWithAxisGenerator::determineTranslation(), g_glideSymbolMap, and Mantid::Geometry::V3R::getPositiveVector().

Referenced by generateElement().

◆ generateElement()

SymmetryElement_sptr Mantid::Geometry::SymmetryElementMirrorGenerator::generateElement ( const SymmetryOperation & operation ) const

overridevirtual

Generates an instance of SymmetryElementMirror with the corresponding symbol, axis and translation vector.

Implements Mantid::Geometry::AbstractSymmetryElementGenerator.

Definition at line 256 of file SymmetryElementFactory.cpp.

References Mantid::Geometry::SymmetryElementWithAxisGenerator::determineAxis(), determineSymbol(), Mantid::Geometry::SymmetryElementWithAxisGenerator::determineTranslation(), and Mantid::Geometry::SymmetryOperation::matrix().

Member Data Documentation

◆ g_glideSymbolMap

std::map< V3R, std::string > Mantid::Geometry::SymmetryElementMirrorGenerator::g_glideSymbolMap

staticprotected

Initial value:

= {
    {V3R(0, 0, 0), "m"},     {V3R(1, 0, 0) / 2, "a"}, {V3R(0, 1, 0) / 2, "b"}, {V3R(0, 0, 1) / 2, "c"},
    {V3R(1, 1, 0) / 2, "n"}, {V3R(1, 0, 1) / 2, "n"}, {V3R(0, 1, 1) / 2, "n"}, {V3R(1, 1, 1) / 2, "n"},
    {V3R(1, 1, 0) / 4, "d"}, {V3R(1, 0, 1) / 4, "d"}, {V3R(0, 1, 1) / 4, "d"}, {V3R(1, 1, 1) / 4, "d"}}

Definition at line 145 of file SymmetryElementFactory.h.

Referenced by determineSymbol().

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

Framework/Geometry/inc/MantidGeometry/Crystal/SymmetryElementFactory.h
Framework/Geometry/src/Crystal/SymmetryElementFactory.cpp

Public Member Functions

Protected Member Functions