mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 10:35:42 +00:00
131 lines
4.4 KiB
C++
131 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/worklet/MaskIndices.h>
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#include <vtkm/cont/ArrayCopy.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleConstant.h>
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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/worklet/DispatcherMapTopology.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <ctime>
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#include <random>
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namespace
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{
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class Worklet : public vtkm::worklet::WorkletVisitPointsWithCells
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{
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public:
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using ControlSignature = void(CellSetIn cellset, FieldInOutPoint outPointId);
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using ExecutionSignature = void(InputIndex, _2);
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using InputDomain = _1;
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using MaskType = vtkm::worklet::MaskIndices;
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VTKM_EXEC void operator()(vtkm::Id pointId, vtkm::Id& outPointId) const { outPointId = pointId; }
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};
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template <typename CellSetType>
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void RunTest(const CellSetType& cellset, const vtkm::cont::ArrayHandle<vtkm::Id>& indices)
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{
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vtkm::Id numPoints = cellset.GetNumberOfPoints();
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vtkm::cont::ArrayHandle<vtkm::Id> outPointId;
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vtkm::cont::ArrayCopy(vtkm::cont::make_ArrayHandleConstant<vtkm::Id>(-1, numPoints), outPointId);
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vtkm::worklet::DispatcherMapTopology<Worklet> dispatcher(vtkm::worklet::MaskIndices{ indices });
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dispatcher.Invoke(cellset, outPointId);
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vtkm::cont::ArrayHandle<vtkm::Int8> stencil;
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vtkm::cont::ArrayCopy(vtkm::cont::make_ArrayHandleConstant<vtkm::Int8>(0, numPoints), stencil);
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// Check that output that should be written was.
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for (vtkm::Id i = 0; i < indices.GetNumberOfValues(); ++i)
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{
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// All unmasked indices should have been copied to the output.
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vtkm::Id unMaskedIndex = indices.ReadPortal().Get(i);
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vtkm::Id writtenValue = outPointId.ReadPortal().Get(unMaskedIndex);
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VTKM_TEST_ASSERT(unMaskedIndex == writtenValue,
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"Did not pass unmasked index. Expected ",
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unMaskedIndex,
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". Got ",
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writtenValue);
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// Mark index as passed.
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stencil.WritePortal().Set(unMaskedIndex, 1);
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}
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// Check that output that should not be written was not.
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for (vtkm::Id i = 0; i < numPoints; ++i)
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{
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if (stencil.ReadPortal().Get(i) == 0)
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{
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vtkm::Id foundValue = outPointId.ReadPortal().Get(i);
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VTKM_TEST_ASSERT(foundValue == -1,
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"Expected index ",
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i,
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" to be unwritten but was filled with ",
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foundValue);
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}
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}
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}
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void TestMaskIndices()
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{
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vtkm::cont::DataSet dataset = vtkm::cont::testing::MakeTestDataSet().Make2DUniformDataSet0();
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auto cellset = dataset.GetCellSet();
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vtkm::Id numberOfPoints = cellset.GetNumberOfPoints();
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vtkm::UInt32 seed = static_cast<vtkm::UInt32>(std::time(nullptr));
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std::default_random_engine generator;
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generator.seed(seed);
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std::uniform_int_distribution<vtkm::Id> countDistribution(1, 2 * numberOfPoints);
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std::uniform_int_distribution<vtkm::Id> ptidDistribution(0, numberOfPoints - 1);
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const int iterations = 5;
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std::cout << "Testing with random indices " << iterations << " times\n";
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std::cout << "Seed: " << seed << std::endl;
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for (int i = 1; i <= iterations; ++i)
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{
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std::cout << "iteration: " << i << "\n";
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vtkm::Id count = countDistribution(generator);
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vtkm::cont::ArrayHandle<vtkm::Id> indices;
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indices.Allocate(count);
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// Note that it is possible that the same index will be written twice, which is generally
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// a bad idea with MaskIndices. However, the worklet will write the same value for each
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// instance, so we should still get the correct result.
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{
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auto portal = indices.WritePortal();
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std::cout << "using indices:";
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for (vtkm::Id j = 0; j < count; ++j)
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{
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auto val = ptidDistribution(generator);
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std::cout << " " << val;
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portal.Set(j, val);
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}
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std::cout << "\n";
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}
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RunTest(cellset, indices);
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}
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}
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} // anonymous namespace
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int UnitTestMaskIndices(int argc, char* argv[])
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{
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return vtkm::cont::testing::Testing::Run(TestMaskIndices, argc, argv);
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}
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