204 lines
7.1 KiB
C++
204 lines
7.1 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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// 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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// Copyright 2019 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2019 UT-Battelle, LLC.
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// Copyright 2019 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_cont_testing_TestingCellLocatorRectilinearGrid_h
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#define vtk_m_cont_testing_TestingCellLocatorRectilinearGrid_h
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#include <random>
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#include <string>
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#include <vtkm/cont/CellLocatorRectilinearGrid.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/DataSetBuilderRectilinear.h>
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#include <vtkm/cont/testing/Testing.h>
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#include <vtkm/exec/CellLocatorRectilinearGrid.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/worklet/WorkletMapField.h>
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template <typename DeviceAdapter>
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class LocatorWorklet : public vtkm::worklet::WorkletMapField
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{
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public:
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using AxisHandle = vtkm::cont::ArrayHandle<vtkm::FloatDefault>;
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using AxisPortalType = typename AxisHandle::template ExecutionTypes<DeviceAdapter>::PortalConst;
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using RectilinearType =
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vtkm::cont::ArrayHandleCartesianProduct<AxisHandle, AxisHandle, AxisHandle>;
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using RectilinearPortalType =
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typename RectilinearType::template ExecutionTypes<DeviceAdapter>::PortalConst;
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LocatorWorklet(vtkm::Bounds& bounds, vtkm::Vec<vtkm::Id, 3>& dims, const RectilinearType& coords)
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: Bounds(bounds)
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, Dims(dims)
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{
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RectilinearPortalType coordsPortal = coords.PrepareForInput(DeviceAdapter());
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xAxis = coordsPortal.GetFirstPortal();
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yAxis = coordsPortal.GetSecondPortal();
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zAxis = coordsPortal.GetThirdPortal();
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}
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using ControlSignature =
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void(FieldIn pointIn, ExecObject locator, FieldOut cellId, FieldOut parametric, FieldOut match);
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using ExecutionSignature = void(_1, _2, _3, _4, _5);
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template <typename PointType>
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VTKM_EXEC vtkm::Id CalculateCellId(const PointType& point) const
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{
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if (!Bounds.Contains(point))
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return -1;
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vtkm::Vec<vtkm::Id, 3> logical(-1, -1, -1);
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// Linear search in the coordinates.
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vtkm::Id index;
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/*Get floor X location*/
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for (index = 0; index < this->Dims[0] - 1; index++)
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if (xAxis.Get(index) <= point[0] && point[0] < xAxis.Get(index + 1))
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{
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logical[0] = index;
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break;
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}
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/*Get floor Y location*/
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for (index = 0; index < this->Dims[1] - 1; index++)
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if (yAxis.Get(index) <= point[1] && point[1] < yAxis.Get(index + 1))
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{
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logical[1] = index;
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break;
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}
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/*Get floor Z location*/
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for (index = 0; index < this->Dims[2] - 1; index++)
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if (zAxis.Get(index) <= point[2] && point[2] < zAxis.Get(index + 1))
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{
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logical[2] = index;
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break;
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}
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if (logical[0] == -1 || logical[1] == -1 || logical[2] == -1)
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return -1;
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return logical[2] * (Dims[0] - 1) * (Dims[1] - 1) + logical[1] * (Dims[0] - 1) + logical[0];
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}
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template <typename PointType, typename LocatorType>
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VTKM_EXEC void operator()(const PointType& pointIn,
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const LocatorType& locator,
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vtkm::Id& cellId,
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PointType& parametric,
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bool& match) const
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{
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vtkm::Id calculated = CalculateCellId(pointIn);
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locator->FindCell(pointIn, cellId, parametric, (*this));
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match = (calculated == cellId);
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}
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private:
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vtkm::Bounds Bounds;
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vtkm::Vec<vtkm::Id, 3> Dims;
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AxisPortalType xAxis;
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AxisPortalType yAxis;
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AxisPortalType zAxis;
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};
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template <typename DeviceAdapter>
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class TestingCellLocatorRectilinearGrid
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{
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public:
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using Algorithm = vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>;
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void TestTest() const
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{
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vtkm::cont::DataSetBuilderRectilinear dsb;
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std::vector<vtkm::Float32> X(4), Y(3), Z(5);
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X[0] = 0.0f;
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X[1] = 1.0f;
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X[2] = 3.0f;
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X[3] = 4.0f;
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Y[0] = 0.0f;
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Y[1] = 1.0f;
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Y[2] = 2.0f;
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Z[0] = 0.0f;
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Z[1] = 1.0f;
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Z[2] = 3.0f;
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Z[3] = 5.0f;
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Z[4] = 6.0f;
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vtkm::cont::DataSet dataset = dsb.Create(X, Y, Z);
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using StructuredType = vtkm::cont::CellSetStructured<3>;
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using AxisHandle = vtkm::cont::ArrayHandle<vtkm::FloatDefault>;
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using RectilinearType =
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vtkm::cont::ArrayHandleCartesianProduct<AxisHandle, AxisHandle, AxisHandle>;
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vtkm::cont::CoordinateSystem coords = dataset.GetCoordinateSystem();
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vtkm::cont::DynamicCellSet cellSet = dataset.GetCellSet();
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vtkm::Bounds bounds = coords.GetBounds();
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std::cout << "X bounds : " << bounds.X.Min << " to " << bounds.X.Max << std::endl;
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std::cout << "Y bounds : " << bounds.Y.Min << " to " << bounds.Y.Max << std::endl;
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std::cout << "Z bounds : " << bounds.Z.Min << " to " << bounds.Z.Max << std::endl;
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vtkm::Vec<vtkm::Id, 3> dims =
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cellSet.Cast<StructuredType>().GetSchedulingRange(vtkm::TopologyElementTagPoint());
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std::cout << "Dimensions of dataset : " << dims << std::endl;
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// Generate some sample points.
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using PointType = vtkm::Vec<vtkm::FloatDefault, 3>;
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std::vector<PointType> pointsVec;
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std::default_random_engine dre;
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std::uniform_real_distribution<vtkm::Float32> xCoords(0.0f, 4.0f);
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std::uniform_real_distribution<vtkm::Float32> yCoords(0.0f, 2.0f);
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std::uniform_real_distribution<vtkm::Float32> zCoords(0.0f, 6.0f);
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for (size_t i = 0; i < 10; i++)
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{
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PointType point = vtkm::make_Vec(xCoords(dre), yCoords(dre), zCoords(dre));
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pointsVec.push_back(point);
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}
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vtkm::cont::ArrayHandle<PointType> points = vtkm::cont::make_ArrayHandle(pointsVec);
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// Initialize locator
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vtkm::cont::CellLocatorRectilinearGrid locator;
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locator.SetCoordinates(coords);
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locator.SetCellSet(cellSet);
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locator.Update();
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// Query the points using the locator.
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vtkm::cont::ArrayHandle<vtkm::Id> cellIds;
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vtkm::cont::ArrayHandle<PointType> parametric;
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vtkm::cont::ArrayHandle<bool> match;
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LocatorWorklet<DeviceAdapter> worklet(
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bounds, dims, coords.GetData().template Cast<RectilinearType>());
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vtkm::worklet::DispatcherMapField<LocatorWorklet<DeviceAdapter>> dispatcher(worklet);
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dispatcher.SetDevice(DeviceAdapter());
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dispatcher.Invoke(points, locator, cellIds, parametric, match);
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auto matchPortal = match.GetPortalConstControl();
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for (vtkm::Id index = 0; index < match.GetNumberOfValues(); index++)
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{
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VTKM_TEST_ASSERT(matchPortal.Get(index), "Points do not match");
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}
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std::cout << "Test finished successfully." << std::endl;
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}
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void operator()() const
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{
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vtkm::cont::GetGlobalRuntimeDeviceTracker().ForceDevice(DeviceAdapter());
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this->TestTest();
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}
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};
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#endif
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