98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPoissonDiskSampler.h
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Copyright (c) Kitware, Inc.
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All rights reserved.
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See LICENSE file 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 vtkPoissonDiskSampler
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* @brief generate point normals using local tangent planes
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*
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*
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* vtkPoissonDiskSampler performs a poisson disk sampling on the input. It takes any `vtkPointSet`
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* as input and produces a `vtkPointSet`. If the input has cells (typically if the input is a
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* `vtkPolyData` or a `vtkUnstructuredGrid`), cells are removed in the output point set.
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*
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* PoissonDisk sampling is done by doing "dart throwing". It is very similar to the implementation
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* proposed by <a
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* href="http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.476.9482&rep=rep1&type=pdf">
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* Dipp\'e and Wold in 1986</a>. Points are drawn randomly one by one and added
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* in the output. Points withing a range of `Radius` (input parameter) are discarded from the
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* output. This process is repeated until there are no more points unprocessed.
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*/
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#ifndef vtkPoissonDiskSampler_h
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#define vtkPoissonDiskSampler_h
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#include "vtkFiltersPointsModule.h" // For export macro
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#include "vtkPointSetAlgorithm.h"
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class vtkAbstractPointLocator;
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class vtkIdList;
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class VTKFILTERSPOINTS_EXPORT vtkPoissonDiskSampler : public vtkPointSetAlgorithm
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{
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public:
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///@{
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/**
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* Standard methods for instantiating, obtaining type information, and
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* printing information.
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*/
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static vtkPoissonDiskSampler* New();
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vtkTypeMacro(vtkPoissonDiskSampler, vtkPointSetAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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///@}
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///@{
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/**
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* Setter / Getter for `Radius`. It is used to determinate the minimum distance that there should
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* be between 2 nearest points in the output.
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*/
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vtkSetMacro(Radius, double);
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vtkGetMacro(Radius, double);
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///@}
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///@{
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/**
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* Specify a point locator. By default a vtkKdTreePointLocator is
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* used. The locator performs efficient searches to locate points
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* around a sample point.
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*/
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void SetLocator(vtkAbstractPointLocator* locator);
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vtkGetObjectMacro(Locator, vtkAbstractPointLocator);
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///@}
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protected:
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vtkPoissonDiskSampler();
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~vtkPoissonDiskSampler() override;
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/**
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* Radius used to query point neighbors using the `Locator`.
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*/
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double Radius;
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/**
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* Locator being used to query point neighbors.
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*/
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vtkAbstractPointLocator* Locator;
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// Pipeline management
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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int RequestDataObject(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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int FillInputPortInformation(int port, vtkInformation* info) override;
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private:
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vtkPoissonDiskSampler(const vtkPoissonDiskSampler&) = delete;
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void operator=(const vtkPoissonDiskSampler&) = delete;
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};
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#endif
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