mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 01:49:02 +00:00
264a8a4b6c
The testing files (even the headers) are not available if `VTKm_ENABLE_TESTING` is off. Mostly, the testing was used to generate example data sets. Instead, change the examples to load data files.
118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
//============================================================================
|
|
// 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/worklet/WorkletMapField.h>
|
|
|
|
#include <vtkm/filter/CreateResult.h>
|
|
#include <vtkm/filter/FilterField.h>
|
|
|
|
#include <vtkm/io/VTKDataSetReader.h>
|
|
#include <vtkm/io/VTKDataSetWriter.h>
|
|
|
|
#include <vtkm/cont/Initialize.h>
|
|
|
|
#include <vtkm/VectorAnalysis.h>
|
|
|
|
#include <cstdlib>
|
|
#include <iostream>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace worklet
|
|
{
|
|
|
|
struct HelloWorklet : public vtkm::worklet::WorkletMapField
|
|
{
|
|
using ControlSignature = void(FieldIn inVector, FieldOut outMagnitude);
|
|
|
|
VTKM_EXEC void operator()(const vtkm::Vec3f& inVector, vtkm::FloatDefault& outMagnitude) const
|
|
{
|
|
outMagnitude = vtkm::Magnitude(inVector);
|
|
}
|
|
};
|
|
}
|
|
} // namespace vtkm::worklet
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace filter
|
|
{
|
|
|
|
class HelloField : public vtkm::filter::FilterField<HelloField>
|
|
{
|
|
public:
|
|
// Specify that this filter operates on 3-vectors
|
|
using SupportedTypes = vtkm::TypeListFieldVec3;
|
|
|
|
template <typename FieldType, typename Policy>
|
|
VTKM_CONT vtkm::cont::DataSet DoExecute(const vtkm::cont::DataSet& inDataSet,
|
|
const FieldType& inField,
|
|
const vtkm::filter::FieldMetadata& fieldMetadata,
|
|
vtkm::filter::PolicyBase<Policy>)
|
|
{
|
|
VTKM_IS_ARRAY_HANDLE(FieldType);
|
|
|
|
//construct our output
|
|
vtkm::cont::ArrayHandle<vtkm::FloatDefault> outField;
|
|
|
|
//construct our invoker to launch worklets
|
|
vtkm::worklet::HelloWorklet mag;
|
|
this->Invoke(mag, inField, outField); //launch mag worklets
|
|
|
|
//construct output field information
|
|
if (this->GetOutputFieldName().empty())
|
|
{
|
|
this->SetOutputFieldName(fieldMetadata.GetName() + "_magnitude");
|
|
}
|
|
|
|
//return the result, which is the input data with the computed field added to it
|
|
return vtkm::filter::CreateResult(
|
|
inDataSet, outField, this->GetOutputFieldName(), fieldMetadata);
|
|
}
|
|
};
|
|
}
|
|
} // vtkm::filter
|
|
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
vtkm::cont::Initialize(argc, argv);
|
|
|
|
if ((argc < 3) || (argc > 4))
|
|
{
|
|
std::cerr << "Usage: " << argv[0] << " in_data.vtk field_name [out_data.vtk]\n\n";
|
|
std::cerr << "For example, you could use the simple_unstructured_bin.vtk that comes with the "
|
|
"VTK-m source:\n\n";
|
|
std::cerr
|
|
<< " " << argv[0]
|
|
<< " <path-to-vtkm-source>/data/data/unstructured/simple_unstructured_bin.vtk vectors\n";
|
|
return 1;
|
|
}
|
|
std::string infilename = argv[1];
|
|
std::string infield = argv[2];
|
|
std::string outfilename = "out_data.vtk";
|
|
if (argc == 4)
|
|
{
|
|
outfilename = argv[3];
|
|
}
|
|
|
|
vtkm::io::VTKDataSetReader reader(infilename);
|
|
vtkm::cont::DataSet inputData = reader.ReadDataSet();
|
|
|
|
vtkm::filter::HelloField helloField;
|
|
helloField.SetActiveField(infield);
|
|
vtkm::cont::DataSet outputData = helloField.Execute(inputData);
|
|
|
|
vtkm::io::VTKDataSetWriter writer(outfilename);
|
|
writer.WriteDataSet(outputData);
|
|
|
|
return 0;
|
|
}
|