vtkEllipsoidalGaussianKernel.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkEllipsoidalGaussianKernel_h
#define vtkEllipsoidalGaussianKernel_h
 
#include "vtkFiltersPointsModule.h" // For export macro
#include "vtkGeneralizedKernel.h"
#include "vtkStdString.h" // For vtkStdString ivars
 
VTK_ABI_NAMESPACE_BEGIN
class vtkIdList;
class vtkDataArray;
class vtkDoubleArray;
 
class VTKFILTERSPOINTS_EXPORT vtkEllipsoidalGaussianKernel : public vtkGeneralizedKernel
{
public:
 
  static vtkEllipsoidalGaussianKernel* New();
  vtkTypeMacro(vtkEllipsoidalGaussianKernel, vtkGeneralizedKernel);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void Initialize(vtkAbstractPointLocator* loc, vtkDataSet* ds, vtkPointData* pd) override;
 
  // Re-use any superclass signatures that we don't override.
  using vtkGeneralizedKernel::ComputeWeights;
 
  vtkIdType ComputeWeights(
    double x[3], vtkIdList* pIds, vtkDoubleArray* prob, vtkDoubleArray* weights) override;
 
 
  vtkSetMacro(UseNormals, bool);
  vtkGetMacro(UseNormals, bool);
  vtkBooleanMacro(UseNormals, bool);
 
 
  vtkSetMacro(NormalsArrayName, vtkStdString);
  vtkGetMacro(NormalsArrayName, vtkStdString);
 
 
  vtkSetMacro(UseScalars, bool);
  vtkGetMacro(UseScalars, bool);
  vtkBooleanMacro(UseScalars, bool);
 
 
  vtkSetMacro(ScalarsArrayName, vtkStdString);
  vtkGetMacro(ScalarsArrayName, vtkStdString);
 
 
  vtkSetClampMacro(ScaleFactor, double, 0.0, VTK_DOUBLE_MAX);
  vtkGetMacro(ScaleFactor, double);
 
 
  vtkSetClampMacro(Sharpness, double, 1, VTK_FLOAT_MAX);
  vtkGetMacro(Sharpness, double);
 
 
  vtkSetClampMacro(Eccentricity, double, 0.000001, VTK_FLOAT_MAX);
  vtkGetMacro(Eccentricity, double);
 
protected:
  vtkEllipsoidalGaussianKernel();
  ~vtkEllipsoidalGaussianKernel() override;
 
  bool UseNormals;
  bool UseScalars;
 
  vtkStdString NormalsArrayName;
  vtkStdString ScalarsArrayName;
 
  double ScaleFactor;
  double Sharpness;
  double Eccentricity;
 
  // Internal structure to reduce computation
  double F2, E2;
  vtkDataArray* NormalsArray;
  vtkDataArray* ScalarsArray;
 
  void FreeStructures() override;
 
private:
  vtkEllipsoidalGaussianKernel(const vtkEllipsoidalGaussianKernel&) = delete;
  void operator=(const vtkEllipsoidalGaussianKernel&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif