ttkDiscreteGradient.h

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#pragma once
 
// VTK Module
#include <ttkDiscreteGradientModule.h>
 
// ttk code includes
#include <DiscreteGradient.h>
#include <ttkAlgorithm.h>
 
class vtkPolyData;
 
class TTKDISCRETEGRADIENT_EXPORT ttkDiscreteGradient
  : public ttkAlgorithm,
    protected ttk::dcg::DiscreteGradient {
 
public:
  static ttkDiscreteGradient *New();
  vtkTypeMacro(ttkDiscreteGradient, ttkAlgorithm);
 
  vtkSetMacro(ForceInputOffsetScalarField, bool);
  vtkGetMacro(ForceInputOffsetScalarField, bool);
 
  vtkSetMacro(ComputeGradientGlyphs, bool);
  vtkGetMacro(ComputeGradientGlyphs, bool);
 
protected:
  ttkDiscreteGradient();
 
  int FillInputPortInformation(int port, vtkInformation *info) override;
  int FillOutputPortInformation(int port, vtkInformation *info) override;
  int RequestData(vtkInformation *request,
                  vtkInformationVector **inputVector,
                  vtkInformationVector *outputVector) override;
 
private:
  template <typename scalarType, typename triangulationType>
  int fillCriticalPoints(vtkPolyData *output,
                         vtkDataArray *const inputScalars,
                         const triangulationType &triangulation);
 
  template <typename triangulationType>
  int fillGradientGlyphs(vtkPolyData *const outputGradientGlyphs,
                         const triangulationType &triangulation);
 
  bool ForceInputOffsetScalarField{false};
  bool ComputeGradientGlyphs{true};
};