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dox/Common/vtkRungeKutta4.h

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00001 /*========================================================================= 00002 00003 Program: Visualization Toolkit 00004 Module: $RCSfile: vtkRungeKutta4.h,v $ 00005 Language: C++ 00006 00007 Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 00008 All rights reserved. 00009 See Copyright.txt or http://www.kitware.com/Copyright.htm for details. 00010 00011 This software is distributed WITHOUT ANY WARRANTY; without even 00012 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00013 PURPOSE. See the above copyright notice for more information. 00014 00015 =========================================================================*/ 00038 #ifndef __vtkRungeKutta4_h 00039 #define __vtkRungeKutta4_h 00040 00041 #include "vtkInitialValueProblemSolver.h" 00042 00043 class VTK_COMMON_EXPORT vtkRungeKutta4 : public vtkInitialValueProblemSolver 00044 { 00045 public: 00046 vtkTypeRevisionMacro(vtkRungeKutta4,vtkInitialValueProblemSolver); 00047 virtual void PrintSelf(ostream& os, vtkIndent indent); 00048 00050 static vtkRungeKutta4 *New(); 00051 00052 00054 00060 virtual int ComputeNextStep(float* xprev, float* xnext, float t, 00061 float& delT, float maxError, float& error) 00062 { 00063 float minStep = delT; 00064 float maxStep = delT; 00065 float delTActual; 00066 return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual, 00067 minStep, maxStep, maxError, error); 00068 } 00069 virtual int ComputeNextStep(float* xprev, float* dxprev, float* xnext, 00070 float t, float& delT, 00071 float maxError, float& error) 00072 { 00073 float minStep = delT; 00074 float maxStep = delT; 00075 float delTActual; 00076 return this->ComputeNextStep(xprev, dxprev, xnext, t, delT, delTActual, 00077 minStep, maxStep, maxError, error); 00078 } 00079 virtual int ComputeNextStep(float* xprev, float* xnext, 00080 float t, float& delT, float& delTActual, 00081 float minStep, float maxStep, 00082 float maxError, float& error) 00083 { 00084 return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual, 00085 minStep, maxStep, maxError, error); 00086 } 00087 virtual int ComputeNextStep(float* xprev, float* dxprev, float* xnext, 00088 float t, float& delT, float& delTActual, 00089 float minStep, float maxStep, 00090 float maxError, float& error); 00092 00093 protected: 00094 vtkRungeKutta4(); 00095 ~vtkRungeKutta4(); 00096 00097 virtual void Initialize(); 00098 00099 float* NextDerivs[3]; 00100 private: 00101 vtkRungeKutta4(const vtkRungeKutta4&); // Not implemented. 00102 void operator=(const vtkRungeKutta4&); // Not implemented. 00103 }; 00104 00105 #endif 00106 00107 00108 00109 00110 00111 00112 00113