128 lines
4.5 KiB
C++
128 lines
4.5 KiB
C++
//============================================================================
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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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//
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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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#ifndef vtk_m_filter_MarchingCubes_h
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#define vtk_m_filter_MarchingCubes_h
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#include <vtkm/filter/FilterDataSetWithField.h>
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#include <vtkm/worklet/MarchingCubes.h>
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namespace vtkm
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{
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namespace filter
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{
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/// \brief generate isosurface(s) from a Volume
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/// Takes as input a volume (e.g., 3D structured point set) and generates on
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/// output one or more isosurfaces.
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/// Multiple contour values must be specified to generate the isosurfaces.
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/// @warning
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/// This filter is currently only supports 3D volumes.
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class MarchingCubes : public vtkm::filter::FilterDataSetWithField<MarchingCubes>
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{
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public:
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using SupportedTypes = vtkm::ListTagBase<vtkm::UInt8, vtkm::Int8, vtkm::Float32, vtkm::Float64>;
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VTKM_CONT
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MarchingCubes();
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VTKM_CONT
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void SetNumberOfIsoValues(vtkm::Id num);
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VTKM_CONT
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vtkm::Id GetNumberOfIsoValues() const;
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VTKM_CONT
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void SetIsoValue(vtkm::Float64 v) { this->SetIsoValue(0, v); }
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VTKM_CONT
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void SetIsoValue(vtkm::Id index, vtkm::Float64);
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VTKM_CONT
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void SetIsoValues(const std::vector<vtkm::Float64>& values);
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VTKM_CONT
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vtkm::Float64 GetIsoValue(vtkm::Id index) const;
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/// Set/Get whether the points generated should be unique for every triangle
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/// or will duplicate points be merged together. Duplicate points are identified
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/// by the unique edge it was generated from.
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///
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VTKM_CONT
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void SetMergeDuplicatePoints(bool on) { this->Worklet.SetMergeDuplicatePoints(on); }
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VTKM_CONT
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bool GetMergeDuplicatePoints() const { return this->Worklet.GetMergeDuplicatePoints(); }
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/// Set/Get whether normals should be generated. Off by default. If enabled,
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/// the default behaviour is to generate high quality normals for structured
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/// datasets, using gradients, and generate fast normals for unstructured
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/// datasets based on the result triangle mesh.
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///
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VTKM_CONT
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void SetGenerateNormals(bool on) { this->GenerateNormals = on; }
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VTKM_CONT
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bool GetGenerateNormals() const { return this->GenerateNormals; }
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/// Set/Get whether the fast path should be used for normals computation for
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/// structured datasets. Off by default.
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VTKM_CONT
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void SetComputeFastNormalsForStructured(bool on) { this->ComputeFastNormalsForStructured = on; }
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VTKM_CONT
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bool GetComputeFastNormalsForStructured() const { return this->ComputeFastNormalsForStructured; }
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/// Set/Get whether the fast path should be used for normals computation for
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/// unstructured datasets. On by default.
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VTKM_CONT
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void SetComputeFastNormalsForUnstructured(bool on)
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{
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this->ComputeFastNormalsForUnstructured = on;
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}
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VTKM_CONT
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bool GetComputeFastNormalsForUnstructured() const
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{
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return this->ComputeFastNormalsForUnstructured;
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}
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VTKM_CONT
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void SetNormalArrayName(const std::string& name) { this->NormalArrayName = name; }
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VTKM_CONT
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const std::string& GetNormalArrayName() const { return this->NormalArrayName; }
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template <typename T, typename StorageType, typename DerivedPolicy>
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VTKM_CONT vtkm::cont::DataSet DoExecute(const vtkm::cont::DataSet& input,
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const vtkm::cont::ArrayHandle<T, StorageType>& field,
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const vtkm::filter::FieldMetadata& fieldMeta,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy);
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//Map a new field onto the resulting dataset after running the filter
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//this call is only valid
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template <typename T, typename StorageType, typename DerivedPolicy>
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VTKM_CONT bool DoMapField(vtkm::cont::DataSet& result,
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const vtkm::cont::ArrayHandle<T, StorageType>& input,
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const vtkm::filter::FieldMetadata& fieldMeta,
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const vtkm::filter::PolicyBase<DerivedPolicy>& policy);
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private:
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std::vector<vtkm::Float64> IsoValues;
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bool GenerateNormals;
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bool ComputeFastNormalsForStructured;
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bool ComputeFastNormalsForUnstructured;
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std::string NormalArrayName;
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vtkm::worklet::MarchingCubes Worklet;
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};
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}
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} // namespace vtkm::filter
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#include <vtkm/filter/MarchingCubes.hxx>
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#endif // vtk_m_filter_MarchingCubes_h
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