VTK  9.2.6
vtkWendlandQuinticKernel.h
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1/*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: vtkWendlandQuinticKernel.h
5
6 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7 All rights reserved.
8 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14=========================================================================*/
40#ifndef vtkWendlandQuinticKernel_h
41#define vtkWendlandQuinticKernel_h
42
43#include "vtkFiltersPointsModule.h" // For export macro
44#include "vtkSPHKernel.h"
45#include <algorithm> // For std::min()
46
47class vtkIdList;
48class vtkDoubleArray;
49
50class VTKFILTERSPOINTS_EXPORT vtkWendlandQuinticKernel : public vtkSPHKernel
51{
52public:
54
59 void PrintSelf(ostream& os, vtkIndent indent) override;
61
67
69
74 double ComputeFunctionWeight(const double d) override
75 {
76 if (d >= 2.0)
77 {
78 return 0.0;
79 }
80 else
81 {
82 double tmp = 1.0 - 0.5 * d;
83 return (tmp * tmp * tmp * tmp) * (1.0 + 2.0 * d);
84 }
85 }
87
89
93 double ComputeDerivWeight(const double d) override
94 {
95 if (d >= 2.0)
96 {
97 return 0.0;
98 }
99 else
100 {
101 double tmp = 1.0 - 0.5 * d;
102 return -2.0 * (tmp * tmp * tmp) * (1.0 + 2.0 * d) + 2.0 * (tmp * tmp * tmp * tmp);
103 }
104 }
106
107protected:
110
111private:
113 void operator=(const vtkWendlandQuinticKernel&) = delete;
114};
115
116#endif
abstract class to quickly locate points in 3-space
abstract class to specify dataset behavior
Definition: vtkDataSet.h:63
dynamic, self-adjusting array of double
list of point or cell ids
Definition: vtkIdList.h:34
a simple class to control print indentation
Definition: vtkIndent.h:40
represent and manipulate point attribute data
Definition: vtkPointData.h:42
a family of SPH interpolation kernels
Definition: vtkSPHKernel.h:68
a quintic SPH interpolation kernel
static vtkWendlandQuinticKernel * New()
Standard methods for instantiation, obtaining type information, and printing.
void Initialize(vtkAbstractPointLocator *loc, vtkDataSet *ds, vtkPointData *pd) override
Produce the computational parameters for the kernel.
double ComputeDerivWeight(const double d) override
Compute weighting factor for derivative quantities given a normalized distance from a sample point.
~vtkWendlandQuinticKernel() override
double ComputeFunctionWeight(const double d) override
Compute weighting factor given a normalized distance from a sample point.
void PrintSelf(ostream &os, vtkIndent indent) override
Standard methods for instantiation, obtaining type information, and printing.