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87 lines
3.1 KiB
87 lines
3.1 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkRecursiveDividingCubes.h,v $
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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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// .NAME vtkRecursiveDividingCubes - create points lying on isosurface (using recursive approach)
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// .SECTION Description
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// vtkRecursiveDividingCubes is a filter that generates points lying 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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// .SECTION See Also
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// vtkDividingCubes vtkContourFilter vtkMarchingCubes
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#ifndef __vtkRecursiveDividingCubes_h
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#define __vtkRecursiveDividingCubes_h
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#include "vtkPolyDataAlgorithm.h"
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class vtkVoxel;
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class VTK_GRAPHICS_EXPORT vtkRecursiveDividingCubes : public vtkPolyDataAlgorithm
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{
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public:
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static vtkRecursiveDividingCubes *New();
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vtkTypeRevisionMacro(vtkRecursiveDividingCubes,vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Set isosurface value.
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vtkSetMacro(Value,double);
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vtkGetMacro(Value,double);
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// Description:
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// Specify sub-voxel size at which to generate point.
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vtkSetClampMacro(Distance,double,1.0e-06,VTK_DOUBLE_MAX);
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vtkGetMacro(Distance,double);
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// Description:
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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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vtkSetClampMacro(Increment,int,1,VTK_LARGE_INTEGER);
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vtkGetMacro(Increment,int);
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protected:
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vtkRecursiveDividingCubes();
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~vtkRecursiveDividingCubes();
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virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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virtual int FillInputPortInformation(int port, vtkInformation *info);
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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&); // Not implemented.
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void operator=(const vtkRecursiveDividingCubes&); // Not implemented.
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};
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#endif
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