mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
128 lines
4.4 KiB
C++
128 lines
4.4 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/WarpVector.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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const vtkm::Id dim = 5;
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template <typename T>
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vtkm::cont::DataSet MakeWarpVectorTestDataSet()
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{
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using vecType = vtkm::Vec<T, 3>;
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vtkm::cont::DataSet dataSet;
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std::vector<vecType> coordinates;
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std::vector<vecType> vec1;
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for (vtkm::Id j = 0; j < dim; ++j)
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{
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T z = static_cast<T>(j) / static_cast<T>(dim - 1);
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for (vtkm::Id i = 0; i < dim; ++i)
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{
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T x = static_cast<T>(i) / static_cast<T>(dim - 1);
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T y = (x * x + z * z) / static_cast<T>(2.0);
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coordinates.push_back(vtkm::make_Vec(x, y, z));
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vec1.push_back(vtkm::make_Vec(x, y, y));
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}
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}
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dataSet.AddCoordinateSystem(
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vtkm::cont::make_CoordinateSystem("coordinates", coordinates, vtkm::CopyFlag::On));
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vtkm::cont::DataSetFieldAdd::AddPointField(dataSet, "vec1", vec1);
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vecType vector = vtkm::make_Vec<T>(static_cast<T>(0.0), static_cast<T>(0.0), static_cast<T>(2.0));
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vtkm::cont::ArrayHandleConstant<vecType> vectorAH =
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vtkm::cont::make_ArrayHandleConstant(vector, dim * dim);
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vtkm::cont::DataSetFieldAdd::AddPointField(dataSet, "vec2", vectorAH);
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return dataSet;
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}
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class PolicyWarpVector : public vtkm::filter::PolicyBase<PolicyWarpVector>
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{
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public:
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using vecType = vtkm::Vec<vtkm::FloatDefault, 3>;
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struct TypeListTagWarpVectorTags
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: vtkm::ListTagBase<vtkm::cont::ArrayHandleConstant<vecType>::StorageTag,
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vtkm::cont::ArrayHandle<vecType>::StorageTag>
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{
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};
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using FieldStorageList = TypeListTagWarpVectorTags;
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};
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void CheckResult(const vtkm::filter::WarpVector& filter, const vtkm::cont::DataSet& result)
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{
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VTKM_TEST_ASSERT(result.HasField("warpvector", vtkm::cont::Field::Association::POINTS),
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"Output filed WarpVector is missing");
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using vecType = vtkm::Vec<vtkm::FloatDefault, 3>;
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vtkm::cont::ArrayHandle<vecType> outputArray;
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result.GetField("warpvector", vtkm::cont::Field::Association::POINTS)
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.GetData()
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.CopyTo(outputArray);
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auto outPortal = outputArray.GetPortalConstControl();
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for (vtkm::Id j = 0; j < dim; ++j)
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{
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vtkm::FloatDefault z =
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static_cast<vtkm::FloatDefault>(j) / static_cast<vtkm::FloatDefault>(dim - 1);
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for (vtkm::Id i = 0; i < dim; ++i)
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{
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vtkm::FloatDefault x =
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static_cast<vtkm::FloatDefault>(i) / static_cast<vtkm::FloatDefault>(dim - 1);
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vtkm::FloatDefault y = (x * x + z * z) / static_cast<vtkm::FloatDefault>(2.0);
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vtkm::FloatDefault targetZ = filter.GetUseCoordinateSystemAsField()
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? z + static_cast<vtkm::FloatDefault>(2 * 2)
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: y + static_cast<vtkm::FloatDefault>(2 * 2);
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auto point = outPortal.Get(j * dim + i);
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VTKM_TEST_ASSERT(point[0] == x, "Wrong result of x value for warp vector");
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VTKM_TEST_ASSERT(point[1] == y, "Wrong result of y value for warp vector");
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VTKM_TEST_ASSERT(point[2] == targetZ, "Wrong result of z value for warp vector");
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}
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}
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VTKM_TEST_ASSERT(filter.GetVectorFieldName() == "vec2", "Vector field name is wrong");
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}
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void TestWarpVectorFilter()
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{
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std::cout << "Testing WarpVector filter" << std::endl;
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vtkm::cont::DataSet ds = MakeWarpVectorTestDataSet<vtkm::FloatDefault>();
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vtkm::FloatDefault scale = 2;
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{
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std::cout << " First field as coordinates" << std::endl;
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vtkm::filter::WarpVector filter(scale);
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filter.SetUseCoordinateSystemAsField(true);
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filter.SetVectorField("vec2");
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vtkm::cont::DataSet result = filter.Execute(ds, PolicyWarpVector());
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CheckResult(filter, result);
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}
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{
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std::cout << " First field as a vector" << std::endl;
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vtkm::filter::WarpVector filter(scale);
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filter.SetActiveField("vec1");
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filter.SetVectorField("vec2");
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vtkm::cont::DataSet result = filter.Execute(ds, PolicyWarpVector());
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CheckResult(filter, result);
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}
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}
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}
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int UnitTestWarpVectorFilter(int argc, char* argv[])
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{
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return vtkm::cont::testing::Testing::Run(TestWarpVectorFilter, argc, argv);
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}
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