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88 lines
3.2 KiB
C
88 lines
3.2 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkProbabilisticVoronoiKernel.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 vtkProbabilisticVoronoiKernel
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* @brief interpolate from the weighted closest point
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*
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*
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* vtkProbabilisticVoronoiKernel is an interpolation kernel that interpolates
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* from the closest weighted point from a neighborhood of points. The weights
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* refer to the probabilistic weighting that can be provided to the
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* ComputeWeights() method.
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*
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* Note that the local neighborhood is taken from the kernel footprint
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* specified in the superclass vtkGeneralizedKernel.
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*
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* @warning
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* If probability weightings are not defined, then the kernel provides the
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* same results as vtkVoronoiKernel, except a less efficiently.
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*
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* @sa
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* vtkInterpolationKernel vtkGeneralizedKernel vtkVoronoiKernel
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*/
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#ifndef vtkProbabilisticVoronoiKernel_h
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#define vtkProbabilisticVoronoiKernel_h
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#include "vtkFiltersPointsModule.h" // For export macro
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#include "vtkGeneralizedKernel.h"
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class vtkIdList;
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class vtkDoubleArray;
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class VTKFILTERSPOINTS_EXPORT vtkProbabilisticVoronoiKernel : public vtkGeneralizedKernel
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{
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public:
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//@{
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/**
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* Standard methods for instantiation, obtaining type information, and printing.
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*/
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static vtkProbabilisticVoronoiKernel *New();
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vtkTypeMacro(vtkProbabilisticVoronoiKernel,vtkGeneralizedKernel);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@}
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// Re-use any superclass signatures that we don't override.
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using vtkGeneralizedKernel::ComputeWeights;
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/**
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* Given a point x, a list of basis points pIds, and a probability
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* weighting function prob, compute interpolation weights associated with
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* these basis points. Note that basis points list pIds, the probability
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* weighting prob, and the weights array are provided by the caller of the
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* method, and may be dynamically resized as necessary. The method returns
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* the number of weights (pIds may be resized in some cases). Typically
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* this method is called after ComputeBasis(), although advanced users can
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* invoke ComputeWeights() and provide the interpolation basis points pIds
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* directly. The probably weighting prob are numbers 0<=prob<=1 which are
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* multiplied against the interpolation weights before normalization. They
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* are estimates of local confidence of weights. The prob may be NULL in
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* which all probabilities are considered =1.
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*/
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virtual vtkIdType ComputeWeights(double x[3], vtkIdList *pIds,
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vtkDoubleArray *prob, vtkDoubleArray *weights);
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protected:
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vtkProbabilisticVoronoiKernel();
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~vtkProbabilisticVoronoiKernel();
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private:
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vtkProbabilisticVoronoiKernel(const vtkProbabilisticVoronoiKernel&) VTK_DELETE_FUNCTION;
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void operator=(const vtkProbabilisticVoronoiKernel&) VTK_DELETE_FUNCTION;
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};
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#endif
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