mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 10:35:42 +00:00
213 lines
8.0 KiB
C++
213 lines
8.0 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#include <vtkm/cont/testing/MakeTestDataSet.h>
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#include <vtkm/cont/testing/Testing.h>
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#include <vtkm/filter/CrossProduct.h>
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#include <random>
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#include <vector>
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namespace
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{
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std::mt19937 randGenerator;
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template <typename T>
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void createVectors(std::size_t numPts,
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int vecType,
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std::vector<vtkm::Vec<T, 3>>& vecs1,
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std::vector<vtkm::Vec<T, 3>>& vecs2)
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{
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if (vecType == 0) // X x Y
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{
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vecs1.resize(numPts, vtkm::make_Vec(1, 0, 0));
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vecs2.resize(numPts, vtkm::make_Vec(0, 1, 0));
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}
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else if (vecType == 1) // Y x Z
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{
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vecs1.resize(numPts, vtkm::make_Vec(0, 1, 0));
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vecs2.resize(numPts, vtkm::make_Vec(0, 0, 1));
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}
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else if (vecType == 2) // Z x X
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{
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vecs1.resize(numPts, vtkm::make_Vec(0, 0, 1));
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vecs2.resize(numPts, vtkm::make_Vec(1, 0, 0));
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}
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else if (vecType == 3) // Y x X
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{
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vecs1.resize(numPts, vtkm::make_Vec(0, 1, 0));
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vecs2.resize(numPts, vtkm::make_Vec(1, 0, 0));
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}
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else if (vecType == 4) // Z x Y
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{
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vecs1.resize(numPts, vtkm::make_Vec(0, 0, 1));
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vecs2.resize(numPts, vtkm::make_Vec(0, 1, 0));
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}
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else if (vecType == 5) // X x Z
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{
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vecs1.resize(numPts, vtkm::make_Vec(1, 0, 0));
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vecs2.resize(numPts, vtkm::make_Vec(0, 0, 1));
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}
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else if (vecType == 6)
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{
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//Test some other vector combinations
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std::uniform_real_distribution<vtkm::Float64> randomDist(-10.0, 10.0);
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vecs1.resize(numPts);
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vecs2.resize(numPts);
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for (std::size_t i = 0; i < numPts; i++)
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{
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vecs1[i] = vtkm::make_Vec(
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randomDist(randGenerator), randomDist(randGenerator), randomDist(randGenerator));
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vecs2[i] = vtkm::make_Vec(
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randomDist(randGenerator), randomDist(randGenerator), randomDist(randGenerator));
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}
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}
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}
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void CheckResult(const vtkm::cont::ArrayHandle<vtkm::Vec3f>& field1,
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const vtkm::cont::ArrayHandle<vtkm::Vec3f>& field2,
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const vtkm::cont::DataSet& result)
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{
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VTKM_TEST_ASSERT(result.HasPointField("crossproduct"), "Output field is missing.");
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vtkm::cont::ArrayHandle<vtkm::Vec3f> outputArray;
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result.GetPointField("crossproduct").GetData().CopyTo(outputArray);
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auto v1Portal = field1.ReadPortal();
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auto v2Portal = field2.ReadPortal();
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auto outPortal = outputArray.ReadPortal();
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VTKM_TEST_ASSERT(outputArray.GetNumberOfValues() == field1.GetNumberOfValues(),
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"Field sizes wrong");
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VTKM_TEST_ASSERT(outputArray.GetNumberOfValues() == field2.GetNumberOfValues(),
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"Field sizes wrong");
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for (vtkm::Id j = 0; j < outputArray.GetNumberOfValues(); j++)
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{
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vtkm::Vec3f v1 = v1Portal.Get(j);
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vtkm::Vec3f v2 = v2Portal.Get(j);
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vtkm::Vec3f res = outPortal.Get(j);
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//Make sure result is orthogonal each input vector. Need to normalize to compare with zero.
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vtkm::Vec3f v1N(vtkm::Normal(v1)), v2N(vtkm::Normal(v1)), resN(vtkm::Normal(res));
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VTKM_TEST_ASSERT(test_equal(vtkm::Dot(resN, v1N), vtkm::FloatDefault(0.0)),
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"Wrong result for cross product");
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VTKM_TEST_ASSERT(test_equal(vtkm::Dot(resN, v2N), vtkm::FloatDefault(0.0)),
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"Wrong result for cross product");
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vtkm::FloatDefault sinAngle =
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vtkm::Magnitude(res) * vtkm::RMagnitude(v1) * vtkm::RMagnitude(v2);
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vtkm::FloatDefault cosAngle = vtkm::Dot(v1, v2) * vtkm::RMagnitude(v1) * vtkm::RMagnitude(v2);
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VTKM_TEST_ASSERT(test_equal(sinAngle * sinAngle + cosAngle * cosAngle, vtkm::FloatDefault(1.0)),
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"Bad cross product length.");
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}
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}
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void TestCrossProduct()
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{
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std::cout << "Testing CrossProduct Filter" << std::endl;
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vtkm::cont::testing::MakeTestDataSet testDataSet;
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const int numCases = 7;
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for (int i = 0; i < numCases; i++)
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{
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std::cout << "Case " << i << std::endl;
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vtkm::cont::DataSet dataSet = testDataSet.Make3DUniformDataSet0();
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vtkm::Id nVerts = dataSet.GetCoordinateSystem(0).GetNumberOfPoints();
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std::vector<vtkm::Vec3f> vecs1, vecs2;
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createVectors(static_cast<std::size_t>(nVerts), i, vecs1, vecs2);
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vtkm::cont::ArrayHandle<vtkm::Vec3f> field1, field2;
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field1 = vtkm::cont::make_ArrayHandle(vecs1);
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field2 = vtkm::cont::make_ArrayHandle(vecs2);
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vtkm::cont::DataSetFieldAdd::AddPointField(dataSet, "vec1", field1);
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vtkm::cont::DataSetFieldAdd::AddPointField(dataSet, "vec2", field2);
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dataSet.AddCoordinateSystem(vtkm::cont::CoordinateSystem("vecA", field1));
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dataSet.AddCoordinateSystem(vtkm::cont::CoordinateSystem("vecB", field2));
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{
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std::cout << " Both vectors as normal fields" << std::endl;
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vtkm::filter::CrossProduct filter;
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filter.SetPrimaryField("vec1");
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filter.SetSecondaryField("vec2", vtkm::cont::Field::Association::POINTS);
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// Check to make sure the fields are reported as correct.
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VTKM_TEST_ASSERT(filter.GetPrimaryFieldName() == "vec1", "Bad field name.");
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VTKM_TEST_ASSERT(filter.GetPrimaryFieldAssociation() == vtkm::cont::Field::Association::ANY,
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"Bad field association.");
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VTKM_TEST_ASSERT(filter.GetUseCoordinateSystemAsPrimaryField() == false,
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"Bad use coordinates.");
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VTKM_TEST_ASSERT(filter.GetSecondaryFieldName() == "vec2", "Bad field name.");
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VTKM_TEST_ASSERT(filter.GetSecondaryFieldAssociation() ==
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vtkm::cont::Field::Association::POINTS,
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"Bad field association.");
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VTKM_TEST_ASSERT(filter.GetUseCoordinateSystemAsSecondaryField() == false,
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"Bad use coordinates.");
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vtkm::cont::DataSet result = filter.Execute(dataSet);
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CheckResult(field1, field2, result);
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}
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{
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std::cout << " First field as coordinates" << std::endl;
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vtkm::filter::CrossProduct filter;
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filter.SetUseCoordinateSystemAsPrimaryField(true);
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filter.SetPrimaryCoordinateSystem(1);
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filter.SetSecondaryField("vec2");
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// Check to make sure the fields are reported as correct.
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VTKM_TEST_ASSERT(filter.GetUseCoordinateSystemAsPrimaryField() == true,
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"Bad use coordinates.");
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VTKM_TEST_ASSERT(filter.GetSecondaryFieldName() == "vec2", "Bad field name.");
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VTKM_TEST_ASSERT(filter.GetSecondaryFieldAssociation() == vtkm::cont::Field::Association::ANY,
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"Bad field association.");
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VTKM_TEST_ASSERT(filter.GetUseCoordinateSystemAsSecondaryField() == false,
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"Bad use coordinates.");
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vtkm::cont::DataSet result = filter.Execute(dataSet);
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CheckResult(field1, field2, result);
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}
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{
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std::cout << " Second field as coordinates" << std::endl;
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vtkm::filter::CrossProduct filter;
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filter.SetPrimaryField("vec1");
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filter.SetUseCoordinateSystemAsSecondaryField(true);
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filter.SetSecondaryCoordinateSystem(2);
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// Check to make sure the fields are reported as correct.
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VTKM_TEST_ASSERT(filter.GetPrimaryFieldName() == "vec1", "Bad field name.");
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VTKM_TEST_ASSERT(filter.GetPrimaryFieldAssociation() == vtkm::cont::Field::Association::ANY,
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"Bad field association.");
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VTKM_TEST_ASSERT(filter.GetUseCoordinateSystemAsPrimaryField() == false,
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"Bad use coordinates.");
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VTKM_TEST_ASSERT(filter.GetUseCoordinateSystemAsSecondaryField() == true,
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"Bad use coordinates.");
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vtkm::cont::DataSet result = filter.Execute(dataSet);
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CheckResult(field1, field2, result);
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}
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}
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}
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} // anonymous namespace
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int UnitTestCrossProductFilter(int argc, char* argv[])
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{
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return vtkm::cont::testing::Testing::Run(TestCrossProduct, argc, argv);
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}
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