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Common/vtkSource.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkSource.h,v $
00005   Language:  C++
00006 
00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
00008   All rights reserved.
00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00010 
00011      This software is distributed WITHOUT ANY WARRANTY; without even 
00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00013      PURPOSE.  See the above copyright notice for more information.
00014 
00015 =========================================================================*/
00051 #ifndef __vtkSource_h
00052 #define __vtkSource_h
00053 
00054 #include "vtkProcessObject.h"
00055 
00056 class vtkDataObject;
00057 class vtkErrorCode;
00058 
00059 class VTK_COMMON_EXPORT vtkSource : public vtkProcessObject
00060 {
00061 public:
00062   vtkTypeRevisionMacro(vtkSource,vtkProcessObject);
00063   void PrintSelf(ostream& os, vtkIndent indent);
00064 
00068   virtual void Update();
00069 
00072   virtual void UpdateWholeExtent();
00073 
00076   virtual void UpdateInformation();
00077 
00078   virtual void PropagateUpdateExtent(vtkDataObject *output);
00079 
00080   virtual void TriggerAsynchronousUpdate();
00081 
00082   virtual void UpdateData(vtkDataObject *output);
00083 
00087   virtual void ComputeInputUpdateExtents( vtkDataObject *output );
00088 
00090 
00092   virtual void SetReleaseDataFlag(int);
00093   virtual int GetReleaseDataFlag();
00094   vtkBooleanMacro(ReleaseDataFlag,int);
00096 
00098   virtual void UnRegister(vtkObjectBase *o);
00099   
00101   virtual int InRegisterLoop(vtkObject *);
00102 
00104 
00106   vtkDataObject **GetOutputs();
00107   vtkGetMacro(NumberOfOutputs,int);
00109 
00113   void UnRegisterAllOutputs(void);
00114 
00117   int GetOutputIndex(vtkDataObject *out);
00118   
00120 
00122   vtkGetMacro( ErrorCode, unsigned long );
00124 
00125 protected:
00126   vtkSource();
00127   ~vtkSource();
00128 
00130 
00133   virtual void ExecuteData(vtkDataObject *vtkNotUsed(output)) {
00134     this->Execute(); };
00136 
00138   virtual void Execute();
00139 
00140   // By default, UpdateInformation calls this method to copy information
00141   // unmodified from the input to the output.
00142   virtual void ExecuteInformation();
00143 
00144   // Called to allocate the input array.  Copies old inputs.
00145   void SetNumberOfOutputs(int num);
00146 
00147   // method used internally for getting an output.
00148   vtkDataObject *GetOutput(int idx);
00149 
00150   // protected methods for setting inputs.
00151   virtual void SetNthOutput(int num, vtkDataObject *output);
00152   virtual void AddOutput(vtkDataObject *output);
00153   virtual void RemoveOutput(vtkDataObject *output);
00154   
00155   vtkDataObject **Outputs;     // An Array of the outputs to the filter
00156   int NumberOfOutputs;
00157   int Updating;
00158   // Time when ExecuteInformation was last called.
00159   vtkTimeStamp InformationTime;
00160 
00162 
00164   vtkSetMacro( ErrorCode, unsigned long );
00166 private:
00167   vtkSource(const vtkSource&);  // Not implemented.
00168   void operator=(const vtkSource&);  // Not implemented.
00169 
00170   unsigned long ErrorCode;
00171 };
00172 
00173 #endif
00174 
00175 
00176