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120 lines
4.3 KiB
C
120 lines
4.3 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPointInterpolator2D.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 vtkPointInterpolator2D
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* @brief interpolate point cloud attribute data
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* onto x-y plane using various kernels
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*
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*
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* vtkPointInterpolator2D probes a point cloud Pc (the filter Source) with a
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* set of points P (the filter Input), interpolating the data values from Pc
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* onto P. Note however that the descriptive phrase "point cloud" is a
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* misnomer: Pc can be represented by any vtkDataSet type, with the points of
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* the dataset forming Pc. Similarly, the output P can also be represented by
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* any vtkDataSet type; and the topology/geometry structure of P is passed
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* through to the output along with the newly interpolated arrays. However,
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* this filter presumes that P lies on a plane z=0.0, thus z-coordinates
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* are set accordingly during the interpolation process.
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*
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* The optional boolean flag InterpolateZ is provided for convenience. In
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* effect it turns the source z coordinates into an additional array that is
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* interpolated onto the output data. For example, if the source is a x-y-z
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* LIDAR point cloud, then z can be interpolated onto the output dataset as a
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* vertical elevation(z-coordinate).
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*
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* A key input to this filter is the specification of the interpolation
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* kernel, and the parameters which control the associated interpolation
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* process. Interpolation kernels include Voronoi, Gaussian, Shepard, and SPH
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* (smoothed particle hydrodynamics), with additional kernels to be added in
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* the future. See vtkPointInterpolator for more information.
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*
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* @warning
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* This class has been threaded with vtkSMPTools. Using TBB or other
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* non-sequential type (set in the CMake variable
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* VTK_SMP_IMPLEMENTATION_TYPE) may improve performance significantly.
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*
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* @warning
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* For widely spaced points in Pc, or when p is located outside the bounding
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* region of Pc, the interpolation may behave badly and the interpolation
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* process will adapt as necessary to produce output. For example, if the N
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* closest points within R are requested to interpolate p, if N=0 then the
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* interpolation will switch to a different strategy (which can be controlled
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* as in the NullPointsStrategy).
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*
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* @sa
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* vtkPointInterpolator
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*/
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#ifndef vtkPointInterpolator2D_h
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#define vtkPointInterpolator2D_h
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#include "vtkFiltersPointsModule.h" // For export macro
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#include "vtkPointInterpolator.h"
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#include "vtkStdString.h" // For vtkStdString ivars
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class VTKFILTERSPOINTS_EXPORT vtkPointInterpolator2D : public vtkPointInterpolator
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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.
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*/
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static vtkPointInterpolator2D* New();
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vtkTypeMacro(vtkPointInterpolator2D, vtkPointInterpolator);
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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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* Specify whether to take the z-coordinate values of the source points as
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* attributes to be interpolated. This is in addition to any other point
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* attribute data associated with the source. By default this is enabled.
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*/
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vtkSetMacro(InterpolateZ, bool);
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vtkGetMacro(InterpolateZ, bool);
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vtkBooleanMacro(InterpolateZ, bool);
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//@}
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//@{
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/**
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* Specify the name of the output array containing z values. This method is
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* only applicable when InterpolateZ is enabled. By default the output
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* array name is "Elevation".
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*/
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vtkSetMacro(ZArrayName, vtkStdString);
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vtkGetMacro(ZArrayName, vtkStdString);
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//@}
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protected:
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vtkPointInterpolator2D();
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~vtkPointInterpolator2D() override;
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// Interpolate z values?
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bool InterpolateZ;
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// Name of output array
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vtkStdString ZArrayName;
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// The driver of the algorithm
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void Probe(vtkDataSet* input, vtkDataSet* source, vtkDataSet* output) override;
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private:
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vtkPointInterpolator2D(const vtkPointInterpolator2D&) = delete;
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void operator=(const vtkPointInterpolator2D&) = delete;
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};
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#endif
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