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Common/vtkRungeKutta2.h

00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkRungeKutta2.h,v $
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00028 #ifndef __vtkRungeKutta2_h
00029 #define __vtkRungeKutta2_h
00030 
00031 #include "vtkInitialValueProblemSolver.h"
00032 
00033 class VTK_COMMON_EXPORT vtkRungeKutta2 : public vtkInitialValueProblemSolver
00034 {
00035 public:
00036   vtkTypeRevisionMacro(vtkRungeKutta2,vtkInitialValueProblemSolver);
00037 
00039   static vtkRungeKutta2 *New();
00040 
00042 
00048   virtual int ComputeNextStep(double* xprev, double* xnext, double t,
00049                               double& delT, double maxError, double& error) 
00050     {
00051       double minStep = delT;
00052       double maxStep = delT;
00053       double delTActual;
00054       return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual,
00055                                    minStep, maxStep, maxError, error);
00056     }
00057   virtual int ComputeNextStep(double* xprev, double* dxprev, double* xnext, 
00058                               double t, double& delT, 
00059                               double maxError, double& error)
00060     {
00061       double minStep = delT;
00062       double maxStep = delT;
00063       double delTActual;
00064       return this->ComputeNextStep(xprev, dxprev, xnext, t, delT, delTActual,
00065                                    minStep, maxStep, maxError, error);
00066     }
00067   virtual int ComputeNextStep(double* xprev, double* xnext, 
00068                               double t, double& delT, double& delTActual,
00069                               double minStep, double maxStep,
00070                               double maxError, double& error)
00071     {
00072       return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual,
00073                                    minStep, maxStep, maxError, error);
00074     }
00075   virtual int ComputeNextStep(double* xprev, double* dxprev, double* xnext, 
00076                               double t, double& delT, double& delTActual,
00077                               double minStep, double maxStep, 
00078                               double maxError, double& error);
00080 
00081 protected:
00082   vtkRungeKutta2();
00083   ~vtkRungeKutta2();
00084 private:
00085   vtkRungeKutta2(const vtkRungeKutta2&);  // Not implemented.
00086   void operator=(const vtkRungeKutta2&);  // Not implemented.
00087 };
00088 
00089 #endif
00090 
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00097