VTK
vtkRungeKutta4.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkRungeKutta4.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 =========================================================================*/
34 #ifndef __vtkRungeKutta4_h
35 #define __vtkRungeKutta4_h
36 
38 
40 {
41 public:
43  virtual void PrintSelf(ostream& os, vtkIndent indent);
44 
46  static vtkRungeKutta4 *New();
47 
48 
50 
56  virtual int ComputeNextStep(double* xprev, double* xnext, double t,
57  double& delT, double maxError, double& error)
58  {
59  double minStep = delT;
60  double maxStep = delT;
61  double delTActual;
62  return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual,
63  minStep, maxStep, maxError, error);
64  }
65  virtual int ComputeNextStep(double* xprev, double* dxprev, double* xnext,
66  double t, double& delT,
67  double maxError, double& error)
68  {
69  double minStep = delT;
70  double maxStep = delT;
71  double delTActual;
72  return this->ComputeNextStep(xprev, dxprev, xnext, t, delT, delTActual,
73  minStep, maxStep, maxError, error);
74  }
75  virtual int ComputeNextStep(double* xprev, double* xnext,
76  double t, double& delT, double& delTActual,
77  double minStep, double maxStep,
78  double maxError, double& error)
79  {
80  return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual,
81  minStep, maxStep, maxError, error);
82  }
83  virtual int ComputeNextStep(double* xprev, double* dxprev, double* xnext,
84  double t, double& delT, double& delTActual,
85  double minStep, double maxStep,
86  double maxError, double& error);
88 
89 protected:
91  ~vtkRungeKutta4();
92 
93  virtual void Initialize();
94 
95  double* NextDerivs[3];
96 private:
97  vtkRungeKutta4(const vtkRungeKutta4&); // Not implemented.
98  void operator=(const vtkRungeKutta4&); // Not implemented.
99 };
100 
101 #endif
102 
103 
104 
105 
106 
107 
108 
109 
virtual int ComputeNextStep(double *xprev, double *xnext, double t, double &delT, double maxError, double &error)
virtual int ComputeNextStep(double *xprev, double *dxprev, double *xnext, double t, double &delT, double maxError, double &error)
virtual void PrintSelf(ostream &os, vtkIndent indent)
a simple class to control print indentation
Definition: vtkIndent.h:37
Integrate an initial value problem using 4th order Runge-Kutta method.
#define VTK_COMMON_EXPORT
virtual int ComputeNextStep(double *xprev, double *xnext, double t, double &delT, double maxError, double &error)
static vtkObject * New()
Integrate a set of ordinary differential equations (initial value problem) in time.
virtual int ComputeNextStep(double *xprev, double *xnext, double t, double &delT, double &delTActual, double minStep, double maxStep, double maxError, double &error)