IO/vtkDICOMImageReader.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkDICOMImageReader.h,v $

  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.

=========================================================================*/
#ifndef __vtkDICOMImageReader_h
#define __vtkDICOMImageReader_h

#include "vtkImageReader2.h"

//BTX
class vtkDICOMImageReaderVector;
class DICOMParser;
class DICOMAppHelper;
//ETX

class VTK_IO_EXPORT vtkDICOMImageReader : public vtkImageReader2
{
 public:

  static vtkDICOMImageReader *New();
  vtkTypeRevisionMacro(vtkDICOMImageReader,vtkImageReader2);

  void PrintSelf(ostream& os, vtkIndent indent);   
  

  void SetFileName(const char* fn)
  {
    if (this->DirectoryName)
      {
      delete [] this->DirectoryName;
      }
    if (this->FileName)
      {
      delete [] this->FileName;
      }
    this->DirectoryName = NULL;
    this->FileName = NULL;
    this->vtkImageReader2::SetFileName(fn);
  }

  void SetDirectoryName(const char* dn);
  

  vtkGetStringMacro(DirectoryName);

  double* GetPixelSpacing();
  
  int GetWidth();

  int GetHeight();

  float* GetImagePositionPatient();

  int GetBitsAllocated();

  int GetPixelRepresentation();

  int GetNumberOfComponents();

  const char* GetTransferSyntaxUID();

  float GetRescaleSlope();

  float GetRescaleOffset();

  const char* GetPatientName();

  const char* GetStudyUID();

  const char* GetStudyID();
  
  float GetGantryAngle();

protected:
  //
  // Setup the volume size
  //
  void SetupOutputInformation(int num_slices);

  //
  // Can I read the file?
  // 
  virtual int CanReadFile(const char* fname);

  //
  // What file extensions are supported?
  // 
  virtual const char* GetFileExtensions()
  {
    return ".dcm";
  }


  virtual const char* GetDescriptiveName()
  {
    return "DICOM";
  }
  
  virtual void ExecuteInformation();
  virtual void ExecuteData(vtkDataObject *out);

  //
  // Constructor 
  //
  vtkDICOMImageReader();

  //
  // Destructor
  // 
  virtual ~vtkDICOMImageReader();

  //
  // Instance of the parser used to parse the file.
  //
  DICOMParser* Parser;

  //
  // Instance of the callbacks that get the data from the file.
  //
  DICOMAppHelper* AppHelper;
  
  //
  // vtkDICOMImageReaderVector wants to be a PIMPL and it will be, but not quite yet.
  //
  vtkDICOMImageReaderVector* DICOMFileNames;
  char* DirectoryName;

  char* PatientName;
  char* StudyUID;
  char* StudyID;
  char* TransferSyntaxUID;
  
private:
  vtkDICOMImageReader(const vtkDICOMImageReader&);  // Not implemented.
  void operator=(const vtkDICOMImageReader&);  // Not implemented.

};

#endif

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