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

  Program:   Visualization Toolkit
  Module:    vtkMINCImageAttributes.h

  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.

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

Copyright (c) 2006 Atamai, Inc.

Use, modification and redistribution of the software, in source or
binary forms, are permitted provided that the following terms and
conditions are met:

1) Redistribution of the source code, in verbatim or modified
   form, must retain the above copyright notice, this license,
   the following disclaimer, and any notices that refer to this
   license and/or the following disclaimer.

2) Redistribution in binary form must include the above copyright
   notice, a copy of this license and the following disclaimer
   in the documentation or with other materials provided with the
   distribution.

3) Modified copies of the source code must be clearly marked as such,
   and must not be misrepresented as verbatim copies of the source code.

THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS"
WITHOUT EXPRESSED OR IMPLIED WARRANTY INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.  IN NO EVENT SHALL ANY COPYRIGHT HOLDER OR OTHER PARTY WHO MAY
MODIFY AND/OR REDISTRIBUTE THE SOFTWARE UNDER THE TERMS OF THIS LICENSE
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, LOSS OF DATA OR DATA BECOMING INACCURATE
OR LOSS OF PROFIT OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF
THE USE OR INABILITY TO USE THE SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

=========================================================================*/
// .NAME vtkMINCImageAttributes - A container for a MINC image header.
// .SECTION Description
// This class provides methods to access all of the information
// contained in the MINC header.  If you read a MINC file into
// VTK and then write it out again, you can use 
// writer->SetImageAttributes(reader->GetImageAttributes) to
// ensure that all of the medical information contained in the
// file is tranferred from the reader to the writer.  If you
// want to change any of the header information, you must 
// use ShallowCopy to make a copy of the reader's attributes
// and then modify only the copy.
// .SECTION See Also
// vtkMINCImageReader vtkMINCImageWriter
// .SECTION Thanks
// Thanks to David Gobbi for writing this class and Atamai Inc. for
// contributing it to VTK.

#ifndef __vtkMINCImageAttributes_h
#define __vtkMINCImageAttributes_h

#include "vtkObject.h"

class vtkDataArray;
class vtkStringArray;
class vtkIdTypeArray;
class vtkDoubleArray;
class vtkMatrix4x4;

// A special class that holds the attributes
class vtkMINCImageAttributeMap;

class VTK_IO_EXPORT vtkMINCImageAttributes : public vtkObject
{
public:
  vtkTypeMacro(vtkMINCImageAttributes,vtkObject);

  static vtkMINCImageAttributes *New();
  virtual void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Reset all the attributes in preparation for loading
  // new information.
  virtual void Reset();
 
  // Description:
  // Get the name of the image, not including the path or
  // the extension.  This is only needed for printing the
  // header and there is usually no need to set it.
  vtkSetStringMacro(Name);
  vtkGetStringMacro(Name);

  // Description:
  // Get the image data type, as stored on disk.  This information
  // is useful if the file was converted to floating-point when it
  // was loaded.  When writing a file from float or double image data,
  // you can use this method to prescribe the output type. 
  vtkSetMacro(DataType, int);
  vtkGetMacro(DataType, int);

  // Description:
  // Add the names of up to five dimensions. The ordering of these
  // dimensions will determine the dimension order of the file.  If
  // no DimensionNames are set, the writer will set the dimension
  // order of the file to be the same as the dimension order in memory.
  virtual void AddDimension(const char *dimension) {
    this->AddDimension(dimension, 0); };
  virtual void AddDimension(const char *dimension, vtkIdType length);

  // Description:
  // Get the dimension names.  The dimension names are same order
  // as written in the file, starting with the slowest-varying
  // dimension.  Use this method to get the array if you need to
  // change "space" dimensions to "frequency" after performing a
  // Fourier transform. 
  virtual vtkStringArray *GetDimensionNames() {
    return this->DimensionNames; };

  // Description:
  // Get the lengths of all the dimensions.  The dimension lengths
  // are informative, the vtkMINCImageWriter does not look at these values
  // but instead uses the dimension sizes of its input.
  virtual vtkIdTypeArray *GetDimensionLengths() {
    return this->DimensionLengths; };

  // Description:
  // Get the names of all the variables.
  virtual vtkStringArray *GetVariableNames() {
    return this->VariableNames; };

  // Description:
  // List the attribute names for a variable.  Set the variable
  // to the empty string to get a list of the global attributes.
  virtual vtkStringArray *GetAttributeNames(const char *variable);

  // Description:
  // Get the image min and max arrays. These are set by the reader,
  // but they aren't used by the writer except to compute the full
  // real data range of the original file.
  virtual void SetImageMin(vtkDoubleArray *imageMin);
  virtual void SetImageMax(vtkDoubleArray *imageMax);
  virtual vtkDoubleArray *GetImageMin() { return this->ImageMin; };
  virtual vtkDoubleArray *GetImageMax() { return this->ImageMax; };

  // Description:
  // Get the number of ImageMinMax dimensions.
  vtkGetMacro(NumberOfImageMinMaxDimensions, int);
  vtkSetMacro(NumberOfImageMinMaxDimensions, int);

  // Description:
  // Check to see if a particular attribute exists.
  virtual int HasAttribute(const char *variable, const char *attribute);

  // Description:
  // Set attribute values for a variable as a vtkDataArray.
  // Set the variable to the empty string to access global attributes.
  virtual void SetAttributeValueAsArray(const char *variable,
                                        const char *attribute,
                                        vtkDataArray *array);
  virtual vtkDataArray *GetAttributeValueAsArray(const char *variable,
                                                 const char *attribute);

  // Description:
  // Set an attribute value as a string.  Set the variable
  // to the empty string to access global attributes.
  // If you specify a variable that does not exist, it will be
  // created.
  virtual void SetAttributeValueAsString(const char *variable,
                                         const char *attribute,
                                         const char *value);
  virtual const char *GetAttributeValueAsString(const char *variable,
                                                const char *attribute);

  // Description:
  // Set an attribute value as an int. Set the variable
  // to the empty string to access global attributes.
  // If you specify a variable that does not exist, it will be
  // created.
  virtual void SetAttributeValueAsInt(const char *variable,
                                      const char *attribute,
                                      int value);
  virtual int GetAttributeValueAsInt(const char *variable,
                                     const char *attribute);

  // Description:
  // Set an attribute value as a double.  Set the variable
  // to the empty string to access global attributes.
  // If you specify a variable that does not exist, it will be
  // created.
  virtual void SetAttributeValueAsDouble(const char *variable,
                                         const char *attribute,
                                         double value);
  virtual double GetAttributeValueAsDouble(const char *variable,
                                           const char *attribute);


  // Description:
  // Validate a particular attribute.  This involves checking
  // that the attribute is a MINC standard attribute, and checking
  // whether it can be set (as opposed to being set automatically
  // from the image information).  The return values is 0 if
  // the attribute is set automatically and therefore should not
  // be copied from here, 1 if this attribute is valid and should
  // be set, and 2 if the attribute is non-standard.
  virtual int ValidateAttribute(const char *varname,
                                const char *attname,
                                vtkDataArray *array);

  // Description:
  // Set this to Off if you do not want to automatically validate
  // every attribute that is set.
  vtkSetMacro(ValidateAttributes, int);
  vtkBooleanMacro(ValidateAttributes, int);
  vtkGetMacro(ValidateAttributes, int);

  // Description:
  // Do a shallow copy.  This will copy all the attributes
  // from the source.  It is much more efficient than a DeepCopy
  // would be, since it only copies pointers to the attribute values
  // instead of copying the arrays themselves.  You must use this
  // method to make a copy if you want to modify any MINC attributes
  // from a MINCReader before you pass them to a MINCWriter.
  virtual void ShallowCopy(vtkMINCImageAttributes *source);

  // Description:
  // Find the valid range of the data from the information stored
  // in the attributes.
  virtual void FindValidRange(double range[2]);

  // Description:
  // Find the image range of the data from the information stored
  // in the attributes.
  virtual void FindImageRange(double range[2]);

  // Description:
  // A diagnostic function.  Print the header of the file in 
  // the same format as ncdump or mincheader.
  virtual void PrintFileHeader();
  virtual void PrintFileHeader(ostream &os);

protected:
  vtkMINCImageAttributes();
  ~vtkMINCImageAttributes();

  const char *ConvertDataArrayToString(vtkDataArray *array);

  virtual int ValidateGlobalAttribute(const char *attrib,
                                      vtkDataArray *array);
  virtual int ValidateGeneralAttribute(const char *varname,
                                       const char *attname,
                                       vtkDataArray *array);
  virtual int ValidateDimensionAttribute(const char *varname,
                                         const char *attname,
                                         vtkDataArray *array);
  virtual int ValidateImageAttribute(const char *varname,
                                     const char *attname,
                                     vtkDataArray *array);
  virtual int ValidateImageMinMaxAttribute(const char *varname,
                                           const char *attname,
                                           vtkDataArray *array);
  virtual int ValidatePatientAttribute(const char *varname,
                                       const char *attname,
                                       vtkDataArray *array);
  virtual int ValidateStudyAttribute(const char *varname,
                                     const char *attname,
                                     vtkDataArray *array);
  virtual int ValidateAcquisitionAttribute(const char *varname,
                                           const char *attname,
                                           vtkDataArray *array);

  vtkStringArray *DimensionNames;
  vtkIdTypeArray *DimensionLengths;

  vtkStringArray *VariableNames;
  vtkMINCImageAttributeMap *AttributeNames;
  vtkMINCImageAttributeMap *AttributeValues;

  vtkStringArray *StringStore;
  
  vtkDoubleArray *ImageMin;
  vtkDoubleArray *ImageMax;
  int NumberOfImageMinMaxDimensions;

  int DataType;
  char *Name;

  int ValidateAttributes;

private:
  vtkMINCImageAttributes(const vtkMINCImageAttributes&); // Not implemented
  void operator=(const vtkMINCImageAttributes&);  // Not implemented

};

#endif /* __vtkMINCImageAttributes_h */