ParticleDensityBase.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_filter_density_estimate_ParticleDensityBase_h
#define vtk_m_filter_density_estimate_ParticleDensityBase_h
 
#include <vtkm/filter/Filter.h>
#include <vtkm/filter/density_estimate/vtkm_filter_density_estimate_export.h>
 
namespace vtkm
{
namespace filter
{
namespace density_estimate
{
class VTKM_FILTER_DENSITY_ESTIMATE_EXPORT ParticleDensityBase : public vtkm::filter::Filter
{
protected:
  ParticleDensityBase() = default;
 
public:
  VTKM_CONT void SetComputeNumberDensity(bool flag) { this->ComputeNumberDensity = flag; }
  VTKM_CONT bool GetComputeNumberDensity() const { return this->ComputeNumberDensity; }
 
  VTKM_CONT void SetDivideByVolume(bool flag) { this->DivideByVolume = flag; }
  VTKM_CONT bool GetDivideByVolume() const { return this->DivideByVolume; }
 
  VTKM_CONT void SetDimension(const vtkm::Id3& dimension) { this->Dimension = dimension; }
  VTKM_CONT vtkm::Id3 GetDimension() const { return this->Dimension; }
 
  VTKM_CONT void SetOrigin(const vtkm::Vec3f& origin) { this->Origin = origin; }
  VTKM_CONT vtkm::Vec3f GetOrigin() const { return this->Origin; }
 
  VTKM_CONT void SetSpacing(const vtkm::Vec3f& spacing) { this->Spacing = spacing; }
  VTKM_CONT vtkm::Vec3f GetSpacing() const { return this->Spacing; }
 
  VTKM_CONT void SetBounds(const vtkm::Bounds& bounds)
  {
    this->Origin = { static_cast<vtkm::FloatDefault>(bounds.X.Min),
                     static_cast<vtkm::FloatDefault>(bounds.Y.Min),
                     static_cast<vtkm::FloatDefault>(bounds.Z.Min) };
    this->Spacing = (vtkm::Vec3f{ static_cast<vtkm::FloatDefault>(bounds.X.Length()),
                                  static_cast<vtkm::FloatDefault>(bounds.Y.Length()),
                                  static_cast<vtkm::FloatDefault>(bounds.Z.Length()) } /
                     Dimension);
  }
  VTKM_CONT vtkm::Bounds GetBounds() const
  {
    return { { this->Origin[0], this->Origin[0] + (this->Spacing[0] * this->Dimension[0]) },
             { this->Origin[1], this->Origin[1] + (this->Spacing[1] * this->Dimension[1]) },
             { this->Origin[2], this->Origin[2] + (this->Spacing[2] * this->Dimension[2]) } };
  }
 
protected:
  // Note: we are using the paradoxical "const ArrayHandle&" parameter whose content can actually
  // be change by the function.
  VTKM_CONT void DoDivideByVolume(const vtkm::cont::UnknownArrayHandle& array) const;
 
  vtkm::Id3 Dimension = { 100, 100, 100 }; // Cell dimension
  vtkm::Vec3f Origin = { 0.0f, 0.0f, 0.0f };
  vtkm::Vec3f Spacing = { 1.0f, 1.0f, 1.0f };
  bool ComputeNumberDensity = false;
  bool DivideByVolume = true;
};
} // namespace density_estimate
} // namespace filter
} // namespace vtkm
 
#endif //vtk_m_filter_density_estimate_ParticleDensityBase_h