VTK
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
50
51class VTKFILTERSPOINTS_EXPORT vtkWendlandQuinticKernel : public vtkSPHKernel
52{
53public:
55
60 void PrintSelf(ostream& os, vtkIndent indent);
62
68 vtkPointData *pd);
69
71
76 virtual double ComputeFunctionWeight(const double d)
77 {
78 if ( d >= 2.0 )
79 {
80 return 0.0;
81 }
82 else
83 {
84 double tmp = 1.0 - 0.5*d;
85 return (tmp*tmp*tmp*tmp) * (1.0 + 2.0*d);
86 }
87 }
89
91
95 virtual double ComputeDerivWeight(const double d)
96 {
97 if ( d >= 2.0 )
98 {
99 return 0.0;
100 }
101 else
102 {
103 double tmp = 1.0 - 0.5*d;
104 return -2.0*(tmp*tmp*tmp) * (1.0 + 2.0*d) +
105 2.0*(tmp*tmp*tmp*tmp);
106 }
107 }
109
110protected:
113
114private:
115 vtkWendlandQuinticKernel(const vtkWendlandQuinticKernel&) VTK_DELETE_FUNCTION;
116 void operator=(const vtkWendlandQuinticKernel&) VTK_DELETE_FUNCTION;
117};
118
119#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:37
a simple class to control print indentation
Definition: vtkIndent.h:40
represent and manipulate point attribute data
Definition: vtkPointData.h:38
a family of SPH interpolation kernels
Definition: vtkSPHKernel.h:69
a quintic SPH interpolation kernel
virtual double ComputeDerivWeight(const double d)
Compute weighting factor for derivative quantities given a normalized distance from a sample point.
static vtkWendlandQuinticKernel * New()
Standard methods for instantiation, obtaining type information, and printing.
virtual void Initialize(vtkAbstractPointLocator *loc, vtkDataSet *ds, vtkPointData *pd)
Produce the computational parameters for the kernel.
void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.
virtual double ComputeFunctionWeight(const double d)
Compute weighting factor given a normalized distance from a sample point.