text: /*=========================================================================
   *
   *  Copyright Insight Software Consortium
   *
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *
   *         http://www.apache.org/licenses/LICENSE-2.0.txt
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   *=========================================================================*/
  
  #ifndef __itkFEMLightObject_h
  #define __itkFEMLightObject_h
  
  #include "itkMacro.h"
  #include "itkSmartPointer.h"
  #include "itkObjectFactory.h"
  #include "itkLightObject.h"
  
  #include "itkFEMException.h"
  #include <iostream>
  
  namespace itk
  {
  namespace fem
  {
  /**
   * \class FEMLightObject
   * \brief Base class for all classes that define the FEM system.
   *
   * Base class for all classes that define FEM system (Elements, Nodes...).
   * Every FEM object requires a global number that can be used to find
   * that object. It is also required that the object can be written to and
   * read from a file (stream). This functionality is implemented inside
   * FEMLightObject class.
   * \ingroup ITKFEM
   */
  class FEMLightObject : public itk::LightObject
  {
  public:
    /** Standard class typedefs. */
    typedef FEMLightObject           Self;
    typedef itk::LightObject         Superclass;
    typedef Self                     Baseclass;
    typedef SmartPointer<Self>       Pointer;
    typedef SmartPointer<const Self> ConstPointer;
  
    /** Run-time type information (and related methods). */
    itkTypeMacro(FEMLightObject, itk::LightObject);
  
    /**
     * Set the global number of the object
     */
    void SetGlobalNumber(int);
  
    /**
    * Get the global number of the object
    */
    int GetGlobalNumber() const;
  
  protected:
  
    /**
     * Default constructor
     */
    FEMLightObject() : m_GlobalNumber(-1)
    {
    }
  
    /**
     * Virtual destructor
     */
    virtual ~FEMLightObject()
    {
    }
  
    virtual void PrintSelf(std::ostream& os, Indent indent) const ITK_OVERRIDE;
  
    /**
     * Copy constructor must be available for the FEM objects...
     */
    FEMLightObject(const FEMLightObject & o) : itk::LightObject()
    {
      m_GlobalNumber = o.m_GlobalNumber;
    }
  
    /**
     * Global number of an object (ID of an object)
     * In general the ID's are required to be unique only within
     * a specific type of derived classes (Elements, Nodes, ...)
     * If the GN is not required, it can be ignored. (normally you
     * need the GN when writing or reading objects to/from stream.
     */
    int m_GlobalNumber;
  };
  
  }
  }  // end namespace itk::fem
  
  #endif // #ifndef __itkFEMLightObject_h
  