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102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkRecursiveDividingCubes.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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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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/**
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* @class vtkRecursiveDividingCubes
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* @brief create points laying on isosurface (using recursive approach)
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*
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* vtkRecursiveDividingCubes is a filter that generates points laying on a
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* surface of constant scalar value (i.e., an isosurface). Dense point
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* clouds (i.e., at screen resolution) will appear as a surface. Less dense
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* clouds can be used as a source to generate streamlines or to generate
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* "transparent" surfaces.
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*
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* This implementation differs from vtkDividingCubes in that it uses a
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* recursive procedure. In many cases this can result in generating
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* more points than the procedural implementation of vtkDividingCubes. This is
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* because the recursive procedure divides voxels by multiples of powers of
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* two. This can over-constrain subdivision. One of the advantages of the
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* recursive technique is that the recursion is terminated earlier, which in
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* some cases can be more efficient.
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*
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* @sa
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* vtkDividingCubes vtkContourFilter vtkMarchingCubes
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*/
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#ifndef vtkRecursiveDividingCubes_h
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#define vtkRecursiveDividingCubes_h
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#include "vtkFiltersGeneralModule.h" // For export macro
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#include "vtkPolyDataAlgorithm.h"
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class vtkVoxel;
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class VTKFILTERSGENERAL_EXPORT vtkRecursiveDividingCubes : public vtkPolyDataAlgorithm
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{
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public:
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static vtkRecursiveDividingCubes* New();
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vtkTypeMacro(vtkRecursiveDividingCubes, vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Set isosurface value.
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*/
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vtkSetMacro(Value, double);
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vtkGetMacro(Value, double);
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//@}
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//@{
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/**
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* Specify sub-voxel size at which to generate point.
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*/
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vtkSetClampMacro(Distance, double, 1.0e-06, VTK_DOUBLE_MAX);
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vtkGetMacro(Distance, double);
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//@}
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//@{
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/**
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* Every "Increment" point is added to the list of points. This parameter, if
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* set to a large value, can be used to limit the number of points while
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* retaining good accuracy.
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*/
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vtkSetClampMacro(Increment, int, 1, VTK_INT_MAX);
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vtkGetMacro(Increment, int);
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//@}
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protected:
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vtkRecursiveDividingCubes();
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~vtkRecursiveDividingCubes() override;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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int FillInputPortInformation(int port, vtkInformation* info) override;
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void SubDivide(double origin[3], double h[3], double values[8]);
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double Value;
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double Distance;
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int Increment;
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// working variable
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int Count;
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// to replace a static
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vtkVoxel* Voxel;
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private:
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vtkRecursiveDividingCubes(const vtkRecursiveDividingCubes&) = delete;
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void operator=(const vtkRecursiveDividingCubes&) = delete;
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};
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#endif
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