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/*=========================================================================
Program: Visualization Toolkit
Module: vtkRandomSequence.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.
=========================================================================*/
// .NAME vtkRandomSequence - Sequence of random numbers.
// .SECTION Description
// vtkRandomSequence defines the interface of any sequence of random numbers.
//
// At this level of abstraction, there is no assumption about the distribution
// of the numbers or about the quality of the sequence of numbers to be
// statistically independent. There is no assumption about the range of values.
//
// To the question about why a random "sequence" class instead of a random
// "generator" class or to a random "number" class?,
// see the OOSC book:
// "Object-Oriented Software Construction", 2nd Edition, by Bertrand Meyer.
// chapter 23, "Principles of class design", "Pseudo-random number generators:
// a design exercise", page 754--755.
#ifndef vtkRandomSequence_h
#define vtkRandomSequence_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
class VTKCOMMONCORE_EXPORT vtkRandomSequence : public vtkObject
{
public:
vtkTypeMacro(vtkRandomSequence,vtkObject);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Current value
virtual double GetValue()=0;
// Description:
// Move to the next number in the random sequence.
virtual void Next()=0;
protected:
vtkRandomSequence();
virtual ~vtkRandomSequence();
private:
vtkRandomSequence(const vtkRandomSequence&); // Not implemented.
void operator=(const vtkRandomSequence&); // Not implemented.
};
#endif // #ifndef vtkRandomSequence_h
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