https://gitlab.opengeosys.org/ogs/ogs.git
Tip revision: 3c652339ac466c5fcc10155a752fb17d5a8ca197 authored by Tobias Meisel on 18 December 2020, 19:17:01 UTC
Merge branch 'parallelHDF5Writer' into 'master'
Merge branch 'parallelHDF5Writer' into 'master'
Tip revision: 3c65233
TestQuadQualityCriteria.cpp
/**
* \file
* \copyright
* Copyright (c) 2012-2020, OpenGeoSys Community (http://www.opengeosys.org)
* Distributed under a Modified BSD License.
* See accompanying file LICENSE.txt or
* http://www.opengeosys.org/project/license
*/
#include <memory>
#include <numeric>
#include <random>
#include "gtest/gtest.h"
#include "MeshLib/Mesh.h"
#include "MeshLib/Node.h"
#include "MeshLib/Elements/Element.h"
#include "MeshLib/MeshGenerators/MeshGenerator.h"
#include "MeshLib/MeshQuality/ElementQualityInterface.h"
class QuadElementQuality : public ::testing::Test
{
public:
QuadElementQuality()
{
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> distrib(1, 10);
lengths = {1, 1};
n_subdivisions = {distrib(gen), distrib(gen)};
}
std::vector<double> getElementQualityVectorFromRegularQuadMesh(
MeshLib::MeshQualityType const type)
{
std::vector<std::unique_ptr<BaseLib::ISubdivision>> vec_div;
for (int i = 0; i < 2; ++i)
{
vec_div.emplace_back(
new BaseLib::UniformSubdivision(lengths[i], n_subdivisions[i]));
}
std::unique_ptr<MeshLib::Mesh> mesh(
MeshLib::MeshGenerator::generateRegularQuadMesh(*vec_div[0],
*vec_div[1]));
MeshLib::ElementQualityInterface element_quality(*mesh, type);
return element_quality.getQualityVector();
}
std::array<int, 2> lengths;
std::array<int, 2> n_subdivisions;
};
TEST_F(QuadElementQuality, ElementSize)
{
auto const type = MeshLib::MeshQualityType::ELEMENTSIZE;
auto const element_quality_vector =
getElementQualityVectorFromRegularQuadMesh(type);
auto const expected_value =
1.0 / std::accumulate(n_subdivisions.begin(), n_subdivisions.end(), 1,
std::multiplies<int>());
for (auto const element_quality : element_quality_vector)
{
ASSERT_NEAR(expected_value, element_quality,
std::numeric_limits<double>::epsilon());
}
}
TEST_F(QuadElementQuality, SizeDifference)
{
auto const type = MeshLib::MeshQualityType::SIZEDIFFERENCE;
auto const element_quality_vector =
getElementQualityVectorFromRegularQuadMesh(type);
// all elements have the same size, the quality value has to be 1.0
auto constexpr expected_value = 1.0;
for (auto const element_quality : element_quality_vector)
{
ASSERT_NEAR(expected_value, element_quality,
10 * std::numeric_limits<double>::epsilon());
}
}
TEST_F(QuadElementQuality, EdgeRatio)
{
auto const type = MeshLib::MeshQualityType::EDGERATIO;
auto const element_quality_vector =
getElementQualityVectorFromRegularQuadMesh(type);
auto const& min_max =
std::minmax_element(n_subdivisions.begin(), n_subdivisions.end());
auto const expected_value = double(*min_max.first) / *min_max.second;
for (auto const element_quality : element_quality_vector)
{
ASSERT_NEAR(expected_value, element_quality,
10 * std::numeric_limits<double>::epsilon());
}
}
TEST_F(QuadElementQuality, EquiAngleSkew)
{
auto const type = MeshLib::MeshQualityType::EQUIANGLESKEW;
auto const element_quality_vector =
getElementQualityVectorFromRegularQuadMesh(type);
auto const expected_value = 0.0;
for (auto const element_quality : element_quality_vector)
{
ASSERT_NEAR(expected_value, element_quality,
2 * std::numeric_limits<double>::epsilon());
}
}