---

IO/vtkImageReader2.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImageReader2.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkImageReader2_h
#define __vtkImageReader2_h

#include "vtkImageSource.h"

#define VTK_FILE_BYTE_ORDER_BIG_ENDIAN 0
#define VTK_FILE_BYTE_ORDER_LITTLE_ENDIAN 1

class VTK_IO_EXPORT vtkImageReader2 : public vtkImageSource
{
public:
  static vtkImageReader2 *New();
  vtkTypeRevisionMacro(vtkImageReader2,vtkImageSource);
  void PrintSelf(ostream& os, vtkIndent indent);   


  void SetFileName(const char *);
  vtkGetStringMacro(FileName);


  void SetFilePrefix(const char *);
  vtkGetStringMacro(FilePrefix);


  void SetFilePattern(const char *);
  vtkGetStringMacro(FilePattern);


  void SetDataScalarType(int type);
  void SetDataScalarTypeToFloat(){this->SetDataScalarType(VTK_FLOAT);}
  void SetDataScalarTypeToDouble(){this->SetDataScalarType(VTK_DOUBLE);}
  void SetDataScalarTypeToInt(){this->SetDataScalarType(VTK_INT);}
  void SetDataScalarTypeToShort(){this->SetDataScalarType(VTK_SHORT);}
  void SetDataScalarTypeToUnsignedShort()
    {this->SetDataScalarType(VTK_UNSIGNED_SHORT);}
  void SetDataScalarTypeToUnsignedChar()
    {this->SetDataScalarType(VTK_UNSIGNED_CHAR);}


  vtkGetMacro(DataScalarType, int);


  vtkSetMacro(NumberOfScalarComponents,int);
  vtkGetMacro(NumberOfScalarComponents,int);
  

  vtkSetVector6Macro(DataExtent,int);
  vtkGetVector6Macro(DataExtent,int);
  

  vtkSetMacro(FileDimensionality, int);
  int GetFileDimensionality() {return this->FileDimensionality;}
  

  vtkSetVector3Macro(DataSpacing,float);
  vtkGetVector3Macro(DataSpacing,float);
  

  vtkSetVector3Macro(DataOrigin,float);
  vtkGetVector3Macro(DataOrigin,float);


  unsigned long GetHeaderSize();
  unsigned long GetHeaderSize(unsigned long slice);

  void SetHeaderSize(unsigned long size);
  

  void SetDataByteOrderToBigEndian();
  void SetDataByteOrderToLittleEndian();
  int GetDataByteOrder();
  void SetDataByteOrder(int);
  const char *GetDataByteOrderAsString();


  vtkSetMacro(FileNameSliceOffset,int);
  vtkGetMacro(FileNameSliceOffset,int);


  vtkSetMacro(FileNameSliceSpacing,int);
  vtkGetMacro(FileNameSliceSpacing,int);



  vtkSetMacro(SwapBytes,int);
  int GetSwapBytes() {return this->SwapBytes;}
  vtkBooleanMacro(SwapBytes,int);

//BTX
  ifstream *GetFile() {return this->File;}
  vtkGetVectorMacro(DataIncrements,unsigned long,4);
//ETX

  int OpenFile();
  void SeekFile(int i, int j, int k);


  vtkBooleanMacro(FileLowerLeft, int);
  vtkGetMacro(FileLowerLeft, int);
  vtkSetMacro(FileLowerLeft, int);


  void ComputeInternalFileName(int slice);
  vtkGetStringMacro(InternalFileName);
  
#ifndef VTK_REMOVE_LEGACY_CODE

  virtual vtkImageReader2* MakeObject();
#endif
  

  virtual int CanReadFile(const char* vtkNotUsed(fname))
    {
      return 0;
    }


  virtual const char* GetFileExensions()
    {
      return 0;
    }


  virtual const char* GetDescriptiveName()
    {
      return 0;
    }
protected:
  vtkImageReader2();
  ~vtkImageReader2();

  char *InternalFileName;
  char *FileName;
  char *FilePrefix;
  char *FilePattern;
  int NumberOfScalarComponents;
  int FileLowerLeft;

  ifstream *File;
  unsigned long DataIncrements[4];
  int DataExtent[6];
  int SwapBytes;

  int FileDimensionality;
  unsigned long HeaderSize;
  int DataScalarType;
  unsigned long ManualHeaderSize;

  float DataSpacing[3];
  float DataOrigin[3];

  int FileNameSliceOffset;
  int FileNameSliceSpacing;
  
  virtual void ExecuteInformation();
  virtual void ExecuteData(vtkDataObject *data);
  virtual void ComputeDataIncrements();
private:
  vtkImageReader2(const vtkImageReader2&);  // Not implemented.
  void operator=(const vtkImageReader2&);  // Not implemented.
};

#endif

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