VTK  9.1.0
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=========================================================================*/
37#ifndef vtkWendlandQuinticKernel_h
38#define vtkWendlandQuinticKernel_h
39
40#include "vtkFiltersPointsModule.h" // For export macro
41#include "vtkSPHKernel.h"
42#include <algorithm> // For std::min()
43
44class vtkIdList;
45class vtkDoubleArray;
46
47class VTKFILTERSPOINTS_EXPORT vtkWendlandQuinticKernel : public vtkSPHKernel
48{
49public:
51
56 void PrintSelf(ostream& os, vtkIndent indent) override;
58
64
66
71 double ComputeFunctionWeight(const double d) override
72 {
73 if (d >= 2.0)
74 {
75 return 0.0;
76 }
77 else
78 {
79 double tmp = 1.0 - 0.5 * d;
80 return (tmp * tmp * tmp * tmp) * (1.0 + 2.0 * d);
81 }
82 }
84
86
90 double ComputeDerivWeight(const double d) override
91 {
92 if (d >= 2.0)
93 {
94 return 0.0;
95 }
96 else
97 {
98 double tmp = 1.0 - 0.5 * d;
99 return -2.0 * (tmp * tmp * tmp) * (1.0 + 2.0 * d) + 2.0 * (tmp * tmp * tmp * tmp);
100 }
101 }
103
104protected:
107
108private:
110 void operator=(const vtkWendlandQuinticKernel&) = delete;
111};
112
113#endif
abstract class to quickly locate points in 3-space
abstract class to specify dataset behavior
Definition: vtkDataSet.h:166
dynamic, self-adjusting array of double
list of point or cell ids
Definition: vtkIdList.h:140
a simple class to control print indentation
Definition: vtkIndent.h:113
represent and manipulate point attribute data
Definition: vtkPointData.h:142
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.