VTK
vtkSPHCubicKernel.h
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1/*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: vtkSPHCubicKernel.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 vtkSPHCubicKernel_h
41#define vtkSPHCubicKernel_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 vtkSPHCubicKernel : public vtkSPHKernel
52{
53public:
55
60 void PrintSelf(ostream& os, vtkIndent indent);
62
68 vtkPointData *pd);
69
71
74 virtual double ComputeFunctionWeight(const double d)
75 {
76 double tmp1 = 2.0 - std::min(d,2.0);
77 double tmp2 = 1.0 - std::min(d,1.0);
78 return (0.25*tmp1*tmp1*tmp1 - tmp2*tmp2*tmp2);
79 }
81
83
87 virtual double ComputeDerivWeight(const double d)
88 {
89 double tmp1 = 2.0 - std::min(d,2.0);
90 double tmp2 = 1.0 - std::min(d,1.0);
91 return (-0.75*tmp1*tmp1 + 3.0*tmp2*tmp2);
92 }
94
95protected:
98
99private:
100 vtkSPHCubicKernel(const vtkSPHCubicKernel&) VTK_DELETE_FUNCTION;
101 void operator=(const vtkSPHCubicKernel&) VTK_DELETE_FUNCTION;
102};
103
104#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 cubic SPH interpolation kernel
virtual double ComputeDerivWeight(const double d)
Compute weighting factor for derivative quantities given a normalized distance from a sample point.
static vtkSPHCubicKernel * New()
Standard methods for instantiation, obtaining type information, and printing.
void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.
virtual void Initialize(vtkAbstractPointLocator *loc, vtkDataSet *ds, vtkPointData *pd)
Produce the computational parameters for the kernel.
virtual double ComputeFunctionWeight(const double d)
Compute weighting factor given a normalized distance from a sample point.
a family of SPH interpolation kernels
Definition: vtkSPHKernel.h:69