Divergence.h

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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.
//============================================================================
 
#ifndef vtk_m_worklet_gradient_Divergence_h
#define vtk_m_worklet_gradient_Divergence_h
 
#include <vtkm/worklet/WorkletMapField.h>
 
namespace vtkm
{
namespace worklet
{
namespace gradient
{
 
using DivergenceTypes = vtkm::List<vtkm::Vec<vtkm::Vec3f_32, 3>, vtkm::Vec<vtkm::Vec3f_64, 3>>;
 
 
struct Divergence : public vtkm::worklet::WorkletMapField
{
  using ControlSignature = void(FieldIn input, FieldOut output);
 
  template <typename InputType, typename OutputType>
  VTKM_EXEC void operator()(const InputType& input, OutputType& divergence) const
  {
    divergence = input[0][0] + input[1][1] + input[2][2];
  }
};
}
}
}
#endif