dox/Common/vtkRungeKutta2.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkRungeKutta2.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkRungeKutta2_h
#define __vtkRungeKutta2_h

#include "vtkInitialValueProblemSolver.h"

class VTK_COMMON_EXPORT vtkRungeKutta2 : public vtkInitialValueProblemSolver
{
public:
  vtkTypeMacro(vtkRungeKutta2,vtkInitialValueProblemSolver);

  static vtkRungeKutta2 *New();


  virtual int ComputeNextStep(double* xprev, double* xnext, double t,
                              double& delT, double maxError, double& error) 
    {
      double minStep = delT;
      double maxStep = delT;
      double delTActual;
      return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual,
                                   minStep, maxStep, maxError, error);
    }
  virtual int ComputeNextStep(double* xprev, double* dxprev, double* xnext, 
                              double t, double& delT, 
                              double maxError, double& error)
    {
      double minStep = delT;
      double maxStep = delT;
      double delTActual;
      return this->ComputeNextStep(xprev, dxprev, xnext, t, delT, delTActual,
                                   minStep, maxStep, maxError, error);
    }
  virtual int ComputeNextStep(double* xprev, double* xnext, 
                              double t, double& delT, double& delTActual,
                              double minStep, double maxStep,
                              double maxError, double& error)
    {
      return this->ComputeNextStep(xprev, 0, xnext, t, delT, delTActual,
                                   minStep, maxStep, maxError, error);
    }
  virtual int ComputeNextStep(double* xprev, double* dxprev, double* xnext, 
                              double t, double& delT, double& delTActual,
                              double minStep, double maxStep, 
                              double maxError, double& error);

protected:
  vtkRungeKutta2();
  ~vtkRungeKutta2();
private:
  vtkRungeKutta2(const vtkRungeKutta2&);  // Not implemented.
  void operator=(const vtkRungeKutta2&);  // Not implemented.
};

#endif

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