vtkInitialValueProblemSolver.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkInitialValueProblemSolver.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 vtkInitialValueProblemSolver_h
#define vtkInitialValueProblemSolver_h
 
#include "vtkCommonMathModule.h" // For export macro
#include "vtkObject.h"
 
class vtkFunctionSet;
 
class VTKCOMMONMATH_EXPORT vtkInitialValueProblemSolver : public vtkObject
{
public:
  vtkTypeMacro(vtkInitialValueProblemSolver,vtkObject);
  virtual void PrintSelf(ostream& os, vtkIndent indent);
 
 
  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) = 0;
 
 
  virtual void SetFunctionSet(vtkFunctionSet* functionset);
  vtkGetObjectMacro(FunctionSet,vtkFunctionSet);
 
  virtual int IsAdaptive() { return this->Adaptive; }
 
//BTX
  enum ErrorCodes
  {
    OUT_OF_DOMAIN = 1,
    NOT_INITIALIZED = 2,
    UNEXPECTED_VALUE = 3
  };
//ETX
 
protected:
  vtkInitialValueProblemSolver();
  ~vtkInitialValueProblemSolver();
 
  virtual void Initialize();
 
  vtkFunctionSet* FunctionSet;
 
  double* Vals;
  double* Derivs;
  int Initialized;
  int Adaptive;
 
private:
  vtkInitialValueProblemSolver(const vtkInitialValueProblemSolver&);  // Not implemented.
  void operator=(const vtkInitialValueProblemSolver&);  // Not implemented.
};
 
#endif