MeshToolsLib::ElementSizeMetric Class Reference

Detailed Description

Calculates the quality of mesh elements based on length/area/volume

Definition at line 25 of file ElementSizeMetric.h.

#include <ElementSizeMetric.h>

Inheritance diagram for MeshToolsLib::ElementSizeMetric:

Collaboration diagram for MeshToolsLib::ElementSizeMetric:

Public Member Functions
void	calculateQuality () override
	Calculates the quality metric for each element of the mesh.
	ElementQualityMetric (MeshLib::Mesh const &mesh)
Public Member Functions inherited from MeshToolsLib::ElementQualityMetric
	ElementQualityMetric (MeshLib::Mesh const &mesh)
virtual	~ElementQualityMetric ()=default
std::vector< double > const &	getElementQuality () const
	Returns the result vector.
virtual BaseLib::Histogram< double >	getHistogram (std::size_t n_bins=0) const

Private Member Functions
std::size_t	calc1dQuality ()
std::size_t	calc2dOr3dQuality ()

Additional Inherited Members
Protected Attributes inherited from MeshToolsLib::ElementQualityMetric
double	_min = std::numeric_limits<double>::max()
double	_max = 0
MeshLib::Mesh const &	_mesh
std::vector< double >	_element_quality_metric

Member Function Documentation

calc1dQuality()

std::size_t MeshToolsLib::ElementSizeMetric::calc1dQuality ( )

private

Definition at line 45 of file ElementSizeMetric.cpp.

{
    const std::vector<MeshLib::Element*>& elements(_mesh.getElements());
    const std::size_t nElems(elements.size());
    std::size_t error_count(0);
 
    for (std::size_t k(0); k < nElems; k++)
    {
        double area(std::numeric_limits<double>::max());
        _element_quality_metric[k] =
            MeshToolsLib::computeElementVolumeNumerically(*elements[k]);
        if (_element_quality_metric[k] <
            std::sqrt(std::abs(std::numeric_limits<double>::epsilon())))
        {
            error_count++;
        }
 
        // update _min and _max values
        if (_min > area)
        {
            _min = area;
        }
        if (_max < area)
        {
            _max = area;
        }
    }
    return error_count;
}

References MeshToolsLib::ElementQualityMetric::_element_quality_metric, MeshToolsLib::ElementQualityMetric::_max, MeshToolsLib::ElementQualityMetric::_mesh, MeshToolsLib::ElementQualityMetric::_min, MeshToolsLib::computeElementVolumeNumerically(), and MeshLib::Mesh::getElements().

Referenced by calculateQuality().

calc2dOr3dQuality()

std::size_t MeshToolsLib::ElementSizeMetric::calc2dOr3dQuality ( )

private

Definition at line 75 of file ElementSizeMetric.cpp.

{
    const std::vector<MeshLib::Element*>& elements(_mesh.getElements());
    const std::size_t nElems(elements.size());
    std::size_t error_count(0);
 
    for (std::size_t k(0); k < nElems; k++)
    {
        MeshLib::Element const& elem(*elements[k]);
        if (elem.getDimension() < _mesh.getDimension())
        {
            _element_quality_metric[k] = 0.0;
            continue;
        }
 
        double const volume =
            MeshToolsLib::computeElementVolumeNumerically(elem);
        if (volume < sqrt(std::abs(std::numeric_limits<double>::epsilon())))
        {
            error_count++;
        }
 
        if (_min > volume)
        {
            _min = volume;
        }
        if (_max < volume)
        {
            _max = volume;
        }
        _element_quality_metric[k] = volume;
    }
    return error_count;
}

References MeshToolsLib::ElementQualityMetric::_element_quality_metric, MeshToolsLib::ElementQualityMetric::_max, MeshToolsLib::ElementQualityMetric::_mesh, MeshToolsLib::ElementQualityMetric::_min, MeshToolsLib::computeElementVolumeNumerically(), MeshLib::Element::getDimension(), MeshLib::Mesh::getDimension(), and MeshLib::Mesh::getElements().

Referenced by calculateQuality().

calculateQuality()

void MeshToolsLib::ElementSizeMetric::calculateQuality ( )

overridevirtual

Calculates the quality metric for each element of the mesh.

Implements MeshToolsLib::ElementQualityMetric.

Definition at line 23 of file ElementSizeMetric.cpp.

{
    std::size_t error_count(0);
    if (_mesh.getDimension() == 1)
    {
        error_count = calc1dQuality();
    }
    else
    {
        error_count = calc2dOr3dQuality();
    }
 
    INFO(
        "ElementSizeMetric::calculateQuality() minimum: {:f}, max_volume: {:f}",
        _min,
        _max);
    if (error_count > 0)
    {
        WARN("Warning: {:d} elements with zero volume found.", error_count);
    }
}

References MeshToolsLib::ElementQualityMetric::_max, MeshToolsLib::ElementQualityMetric::_mesh, MeshToolsLib::ElementQualityMetric::_min, calc1dQuality(), calc2dOr3dQuality(), MeshLib::Mesh::getDimension(), INFO(), and WARN().

ElementQualityMetric()

MeshToolsLib::ElementQualityMetric::ElementQualityMetric ( MeshLib::Mesh const & mesh )

explicit

Definition at line 33 of file ElementQualityMetric.cpp.

    : _mesh(mesh)
{
    _element_quality_metric.resize(_mesh.getNumberOfElements(), -1.0);
}

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

• MeshToolsLib/MeshQuality/ElementSizeMetric.h
• MeshToolsLib/MeshQuality/ElementSizeMetric.cpp