vtk-m/docs/users-guide/examples/GuideExampleArrayHandleDiscard.cxx
2024-06-05 17:51:14 -04:00

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//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt for details.
//
// This software is distributed WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the above copyright notice for more information.
//============================================================================
#include <vtkm/cont/Algorithm.h>
#include <vtkm/cont/ArrayHandleCounting.h>
#include <vtkm/cont/ArrayHandleDiscard.h>
#include <vtkm/cont/testing/Testing.h>
namespace
{
////
//// BEGIN-EXAMPLE ArrayHandleDiscard
////
template<typename InputArrayType, typename OutputArrayType1, typename OutputArrayType2>
VTKM_CONT void DoFoo(InputArrayType input,
OutputArrayType1 output1,
OutputArrayType2 output2);
template<typename InputArrayType>
VTKM_CONT inline vtkm::cont::ArrayHandle<vtkm::FloatDefault> DoBar(InputArrayType input)
{
VTKM_IS_ARRAY_HANDLE(InputArrayType);
vtkm::cont::ArrayHandle<vtkm::FloatDefault> keepOutput;
vtkm::cont::ArrayHandleDiscard<vtkm::FloatDefault> discardOutput;
DoFoo(input, keepOutput, discardOutput);
return keepOutput;
}
////
//// END-EXAMPLE ArrayHandleDiscard
////
template<typename InputArrayType, typename OutputArrayType1, typename OutputArrayType2>
VTKM_CONT inline void DoFoo(InputArrayType input,
OutputArrayType1 output1,
OutputArrayType2 output2)
{
vtkm::cont::Algorithm::Copy(input, output1);
vtkm::cont::Algorithm::Copy(input, output2);
}
void Test()
{
vtkm::cont::ArrayHandleCounting<vtkm::FloatDefault> inputArray(0, 10, 10);
vtkm::cont::ArrayHandle<vtkm::FloatDefault> outputArray = DoBar(inputArray);
VTKM_TEST_ASSERT(outputArray.GetNumberOfValues() == 10, "Wrong size.");
}
} // anonymous namespace
int GuideExampleArrayHandleDiscard(int argc, char* argv[])
{
return vtkm::cont::testing::Testing::Run(Test, argc, argv);
}