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IO/vtkImageReader2.h

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

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

Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
#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();
  vtkTypeMacro(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);


  int GetHeaderSize();
  int GetHeaderSize(int slice);

  void SetHeaderSize(int size);
  

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


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

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

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


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


  void ComputeInternalFileName(int slice);
  vtkGetStringMacro(InternalFileName);
  
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;
  int HeaderSize;
  int DataScalarType;
  int ManualHeaderSize;

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

  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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