VTK  9.2.6
vtkRungeKutta2.h
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1/*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: vtkRungeKutta2.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=========================================================================*/
32#ifndef vtkRungeKutta2_h
33#define vtkRungeKutta2_h
34
35#include "vtkCommonMathModule.h" // For export macro
37
38class VTKCOMMONMATH_EXPORT vtkRungeKutta2 : public vtkInitialValueProblemSolver
39{
40public:
42 void PrintSelf(ostream& os, vtkIndent indent) override;
43
48
49 using Superclass::ComputeNextStep;
51
64 int ComputeNextStep(double* xprev, double* xnext, double t, double& delT, double maxError,
65 double& error, void* userData) override
66 {
67 double minStep = delT;
68 double maxStep = delT;
69 double delTActual;
70 return this->ComputeNextStep(
71 xprev, nullptr, xnext, t, delT, delTActual, minStep, maxStep, maxError, error, userData);
72 }
73 int ComputeNextStep(double* xprev, double* dxprev, double* xnext, double t, double& delT,
74 double maxError, double& error, void* userData) override
75 {
76 double minStep = delT;
77 double maxStep = delT;
78 double delTActual;
79 return this->ComputeNextStep(
80 xprev, dxprev, xnext, t, delT, delTActual, minStep, maxStep, maxError, error, userData);
81 }
82 int ComputeNextStep(double* xprev, double* xnext, double t, double& delT, double& delTActual,
83 double minStep, double maxStep, double maxError, double& error, void* userData) override
84 {
85 return this->ComputeNextStep(
86 xprev, nullptr, xnext, t, delT, delTActual, minStep, maxStep, maxError, error, userData);
87 }
88 int ComputeNextStep(double* xprev, double* dxprev, double* xnext, double t, double& delT,
89 double& delTActual, double minStep, double maxStep, double maxError, double& error,
90 void* userData) override;
92
93protected:
95 ~vtkRungeKutta2() override;
96
97private:
98 vtkRungeKutta2(const vtkRungeKutta2&) = delete;
99 void operator=(const vtkRungeKutta2&) = delete;
100};
101
102#endif
a simple class to control print indentation
Definition vtkIndent.h:40
Integrate a set of ordinary differential equations (initial value problem) in time.
virtual int ComputeNextStep(double *xprev, double *xnext, double t, double &delT, double maxError, double &error)
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of...
Integrate an initial value problem using 2nd order Runge-Kutta method.
int ComputeNextStep(double *xprev, double *dxprev, double *xnext, double t, double &delT, double maxError, double &error, void *userData) override
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of...
static vtkRungeKutta2 * New()
Construct a vtkRungeKutta2 with no initial FunctionSet.
int ComputeNextStep(double *xprev, double *xnext, double t, double &delT, double maxError, double &error, void *userData) override
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of...
~vtkRungeKutta2() override
int ComputeNextStep(double *xprev, double *xnext, double t, double &delT, double &delTActual, double minStep, double maxStep, double maxError, double &error, void *userData) override
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of...
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
int ComputeNextStep(double *xprev, double *dxprev, double *xnext, double t, double &delT, double &delTActual, double minStep, double maxStep, double maxError, double &error, void *userData) override
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of...