mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 11:05:44 +00:00
198 lines
6.7 KiB
C
198 lines
6.7 KiB
C
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//============================================================================
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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 2016 Sandia Corporation.
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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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_filter_ResultField_h
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#define vtk_m_filter_ResultField_h
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#include <vtkm/filter/ResultBase.h>
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#include <vtkm/cont/Field.h>
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namespace vtkm {
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namespace filter {
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/// \brief Results for filters that create a field
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///
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/// \c ResultField contains the results for a filter that generates a new
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/// field. The geometry of the underlying data is a shallow copy of the
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/// original input.
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///
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/// This class also holds the field that has been added.
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///
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class ResultField : public vtkm::filter::ResultBase
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{
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public:
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VTKM_CONT_EXPORT
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ResultField() { }
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/// Use this constructor if the field has already been added to the data set.
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/// In this case, just tell us what the field name is (and optionally its
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/// association).
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///
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VTKM_CONT_EXPORT
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ResultField(const vtkm::cont::DataSet &dataSet,
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const std::string &fieldName,
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vtkm::cont::Field::AssociationEnum fieldAssociation
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= vtkm::cont::Field::ASSOC_ANY)
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: ResultBase(dataSet),
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FieldName(fieldName),
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FieldAssociation(fieldAssociation)
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{
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VTKM_ASSERT(fieldName != "");
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VTKM_ASSERT(dataSet.HasField(fieldName, fieldAssociation));
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}
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/// Use this constructor if you have build a \c Field object. An output
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/// \c DataSet will be created by adding the field to the input.
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///
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VTKM_CONT_EXPORT
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ResultField(const vtkm::cont::DataSet &inDataSet,
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const vtkm::cont::Field &field)
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: FieldName(field.GetName()), FieldAssociation(field.GetAssociation())
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{
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VTKM_ASSERT(this->FieldName != "");
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vtkm::cont::DataSet outDataSet = inDataSet;
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outDataSet.AddField(field);
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this->SetDataSet(outDataSet);
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// Sanity check.
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VTKM_ASSERT(this->GetDataSet().HasField(this->FieldName,
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this->FieldAssociation));
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}
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/// Use this constructor if you have an ArrayHandle that holds the data for
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/// the field. You also need to specify a name and an association for the
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/// field. If the field is associated with a particular element set (for
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/// example, a cell association is associated with a cell set), the name of
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/// that associated set must also be given. The element set name is ignored
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/// for \c ASSOC_WHOLE_MESH and \c ASSOC_POINTS associations.
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///
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template<typename T, typename Storage>
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VTKM_CONT_EXPORT
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ResultField(const vtkm::cont::DataSet &inDataSet,
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const vtkm::cont::ArrayHandle<T, Storage> &fieldArray,
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const std::string &fieldName,
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vtkm::cont::Field::AssociationEnum fieldAssociation,
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const std::string &elementSetName = "")
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: FieldName(fieldName), FieldAssociation(fieldAssociation)
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{
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VTKM_ASSERT(fieldName != "");
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VTKM_ASSERT(fieldAssociation != vtkm::cont::Field::ASSOC_ANY);
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VTKM_ASSERT(fieldAssociation != vtkm::cont::Field::ASSOC_LOGICAL_DIM);
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vtkm::cont::DataSet outDataSet = inDataSet;
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if ((fieldAssociation == vtkm::cont::Field::ASSOC_WHOLE_MESH) ||
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(fieldAssociation == vtkm::cont::Field::ASSOC_POINTS))
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{
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vtkm::cont::Field field(fieldName, fieldAssociation, fieldArray);
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outDataSet.AddField(field);
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}
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else
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{
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vtkm::cont::Field field(fieldName,
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fieldAssociation,
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elementSetName,
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fieldArray);
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outDataSet.AddField(field);
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}
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this->SetDataSet(outDataSet);
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// Sanity check.
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VTKM_ASSERT(this->GetDataSet().HasField(this->FieldName,
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this->FieldAssociation));
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}
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/// Use this constructor if you have a DynamicArrayHandle that holds the data
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/// for the field. You also need to specify a name and an association for the
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/// field. If the field is associated with a particular element set (for
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/// example, a cell association is associated with a cell set), the name of
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/// that associated set must also be given. The element set name is ignored
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/// for \c ASSOC_WHOLE_MESH and \c ASSOC_POINTS associations.
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///
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VTKM_CONT_EXPORT
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ResultField(const vtkm::cont::DataSet &inDataSet,
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const vtkm::cont::DynamicArrayHandle &fieldArray,
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const std::string &fieldName,
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vtkm::cont::Field::AssociationEnum fieldAssociation,
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const std::string &elementSetName = "")
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: FieldName(fieldName), FieldAssociation(fieldAssociation)
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{
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VTKM_ASSERT(fieldName != "");
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VTKM_ASSERT(fieldAssociation != vtkm::cont::Field::ASSOC_ANY);
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VTKM_ASSERT(fieldAssociation != vtkm::cont::Field::ASSOC_LOGICAL_DIM);
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vtkm::cont::DataSet outDataSet = inDataSet;
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if ((fieldAssociation == vtkm::cont::Field::ASSOC_WHOLE_MESH) ||
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(fieldAssociation == vtkm::cont::Field::ASSOC_POINTS))
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{
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vtkm::cont::Field field(fieldName, fieldAssociation, fieldArray);
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outDataSet.AddField(field);
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}
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else
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{
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vtkm::cont::Field field(fieldName,
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fieldAssociation,
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elementSetName,
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fieldArray);
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outDataSet.AddField(field);
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}
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this->SetDataSet(outDataSet);
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// Sanity check.
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VTKM_ASSERT(this->GetDataSet().HasField(this->FieldName,
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this->FieldAssociation));
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}
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VTKM_CONT_EXPORT
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const vtkm::cont::Field &GetField() const
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{
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return this->GetDataSet().GetField(this->FieldName, this->FieldAssociation);
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}
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template<typename T, typename Storage>
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VTKM_CONT_EXPORT
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bool FieldAs(vtkm::cont::ArrayHandle<T, Storage> &dest) const
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{
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try
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{
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this->GetField().GetData().CopyTo(dest);
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return true;
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}
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catch(vtkm::cont::Error)
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{
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return false;
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}
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}
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private:
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std::string FieldName;
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vtkm::cont::Field::AssociationEnum FieldAssociation;
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};
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}
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} // namespace vtkm::filter
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#endif //vtk_m_filter_ResultField_h
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