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vtkVolume16Reader Class Reference

#include <vtkVolume16Reader.h>

Inheritance diagram for vtkVolume16Reader:

[legend]Collaboration diagram for vtkVolume16Reader:

[legend]List of all members.

Detailed Description

read 16 bit image files

Date:: 2002/06/19 18:36:11

Revision:: 1.42

vtkVolume16Reader is a source object that reads 16 bit image files.

Volume16Reader creates structured point datasets. The dimension of the dataset depends upon the number of files read. Reading a single file results in a 2D image, while reading more than one file results in a 3D volume.

File names are created using FilePattern and FilePrefix as follows: sprintf (filename, FilePattern, FilePrefix, number); where number is in the range ImageRange[0] to ImageRange[1]. If ImageRange[1] <= ImageRange[0], then slice number ImageRange[0] is read. Thus to read an image set ImageRange[0] = ImageRange[1] = slice number. The default behavior is to read a single file (i.e., image slice 1).

The DataMask instance variable is used to read data files with imbedded connectivity or segmentation information. For example, some data has the high order bit set to indicate connected surface. The DataMask allows you to select this data. Other important ivars include HeaderSize, which allows you to skip over initial info, and SwapBytes, which turns on/off byte swapping.

The Transform instance variable specifies a permutation transformation to map slice space into world space. vtkImageReader has replaced the functionality of this class and should be used instead.

See also:: vtkSliceCubes vtkMarchingCubes vtkImageReader

Created by:

Schroeder, Will

CVS contributions (if > 5%):

Schroeder, Will (41%)
Lorensen, Bill (32%)
Martin, Ken (17%)

CVS logs (CVSweb):

.cxx (/IO/vtkVolume16Reader.cxx)
.h (/IO/vtkVolume16Reader.h)

Examples:: vtkVolume16Reader (Examples)

Tests:: vtkVolume16Reader (Tests)

Definition at line 81 of file vtkVolume16Reader.h.

Public Types

typedef vtkVolumeReader Superclass

Public Methods

virtual const char * GetClassName ()

virtual int IsA (const char *type)

void PrintSelf (ostream &os, vtkIndent indent)

vtkImageData * GetImage (int ImageNumber)

virtual void SetDataDimensions (int, int)

void SetDataDimensions (int[2])

virtual int * GetDataDimensions ()

virtual void GetDataDimensions (int data[2])

virtual void SetDataMask (unsigned short)

virtual unsigned short GetDataMask ()

virtual void SetHeaderSize (int)

virtual int GetHeaderSize ()

void SetDataByteOrderToBigEndian ()

void SetDataByteOrderToLittleEndian ()

int GetDataByteOrder ()

void SetDataByteOrder (int)

const char * GetDataByteOrderAsString ()

virtual void SetSwapBytes (int)

virtual int GetSwapBytes ()

virtual void SwapBytesOn ()

virtual void SwapBytesOff ()

virtual void SetTransform (vtkTransform *)

virtual vtkTransform * GetTransform ()

Static Public Methods

int IsTypeOf (const char *type)

vtkVolume16Reader * SafeDownCast (vtkObject *o)

vtkVolume16Reader * New ()

Protected Methods

vtkVolume16Reader ()

~vtkVolume16Reader ()

virtual void ExecuteData (vtkDataObject *)

virtual void ExecuteInformation ()

void TransformSlice (unsigned short *slice, unsigned short *pixels, int k, int dimensions[3], int bounds[3])

void ComputeTransformedDimensions (int dimensions[3])

void ComputeTransformedBounds (int bounds[6])

void ComputeTransformedSpacing (float Spacing[3])

void ComputeTransformedOrigin (float origin[3])

void AdjustSpacingAndOrigin (int dimensions[3], float Spacing[3], float origin[3])

void ReadImage (int ImageNumber, vtkUnsignedShortArray *)

void ReadVolume (int FirstImage, int LastImage, vtkUnsignedShortArray *)

int Read16BitImage (FILE *fp, unsigned short *pixels, int xsize, int ysize, int skip, int swapBytes)

Protected Attributes

int DataDimensions [2]

unsigned short DataMask

int SwapBytes

int HeaderSize

vtkTransform * Transform

Member Typedef Documentation

typedef vtkVolumeReader vtkVolume16Reader::Superclass

Reimplemented from vtkVolumeReader.
Definition at line 84 of file vtkVolume16Reader.h.

Constructor & Destructor Documentation

vtkVolume16Reader::vtkVolume16Reader ( ) [protected]

vtkVolume16Reader::~vtkVolume16Reader ( ) [protected]

Member Function Documentation

virtual const char* vtkVolume16Reader::GetClassName ( ) [virtual]

Reimplemented from vtkVolumeReader.

int vtkVolume16Reader::IsTypeOf ( const char * type ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkVolumeReader.

virtual int vtkVolume16Reader::IsA ( const char * type ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkVolumeReader.

vtkVolume16Reader* vtkVolume16Reader::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkVolumeReader.

void vtkVolume16Reader::PrintSelf ( ostream & os,

vtkIndent indent

) [virtual]

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from vtkVolumeReader.

vtkVolume16Reader* vtkVolume16Reader::New ( ) [static]

Construct object with NULL file prefix; file pattern "s.d"; image range set to (1,1); data origin (0,0,0); data spacing (1,1,1); no data mask; header size 0; and byte swapping turned off.
Reimplemented from vtkObject.

virtual void vtkVolume16Reader::SetDataDimensions ( int ,

int

) [virtual]

Specify the dimensions for the data.

void vtkVolume16Reader::SetDataDimensions ( int [2] )

Specify the dimensions for the data.

virtual int* vtkVolume16Reader::GetDataDimensions ( ) [virtual]

Specify the dimensions for the data.

virtual void vtkVolume16Reader::GetDataDimensions ( int data[2] ) [virtual]

Specify the dimensions for the data.

virtual void vtkVolume16Reader::SetDataMask ( unsigned short ) [virtual]

Specify a mask used to eliminate data in the data file (e.g., connectivity bits).

virtual unsigned short vtkVolume16Reader::GetDataMask ( ) [virtual]

Specify a mask used to eliminate data in the data file (e.g., connectivity bits).

virtual void vtkVolume16Reader::SetHeaderSize ( int ) [virtual]

Specify the number of bytes to seek over at start of image.

virtual int vtkVolume16Reader::GetHeaderSize ( ) [virtual]

Specify the number of bytes to seek over at start of image.

void vtkVolume16Reader::SetDataByteOrderToBigEndian ( )

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

void vtkVolume16Reader::SetDataByteOrderToLittleEndian ( )

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

int vtkVolume16Reader::GetDataByteOrder ( )

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

void vtkVolume16Reader::SetDataByteOrder ( int )

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

const char* vtkVolume16Reader::GetDataByteOrderAsString ( )

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

virtual void vtkVolume16Reader::SetSwapBytes ( int ) [virtual]

Turn on/off byte swapping.

virtual int vtkVolume16Reader::GetSwapBytes ( ) [virtual]

Turn on/off byte swapping.

virtual void vtkVolume16Reader::SwapBytesOn ( ) [virtual]

Turn on/off byte swapping.

virtual void vtkVolume16Reader::SwapBytesOff ( ) [virtual]

Turn on/off byte swapping.

virtual void vtkVolume16Reader::SetTransform ( vtkTransform * ) [virtual]

Set/Get transformation matrix to transform the data from slice space into world space. This matrix must be a permutation matrix. To qualify, the sums of the rows must be + or - 1.

virtual vtkTransform* vtkVolume16Reader::GetTransform ( ) [virtual]

Set/Get transformation matrix to transform the data from slice space into world space. This matrix must be a permutation matrix. To qualify, the sums of the rows must be + or - 1.

vtkImageData* vtkVolume16Reader::GetImage ( int ImageNumber ) [virtual]

Other objects make use of these methods
Implements vtkVolumeReader.

virtual void vtkVolume16Reader::ExecuteData ( vtkDataObject * ) [protected, virtual]

virtual void vtkVolume16Reader::ExecuteInformation ( ) [protected, virtual]

Reimplemented from vtkSource.

void vtkVolume16Reader::TransformSlice ( unsigned short * slice,

unsigned short * pixels,

int k,

int dimensions[3],

int bounds[3]

) [protected]

void vtkVolume16Reader::ComputeTransformedDimensions ( int dimensions[3] ) [protected]

void vtkVolume16Reader::ComputeTransformedBounds ( int bounds[6] ) [protected]

void vtkVolume16Reader::ComputeTransformedSpacing ( float Spacing[3] ) [protected]

void vtkVolume16Reader::ComputeTransformedOrigin ( float origin[3] ) [protected]

void vtkVolume16Reader::AdjustSpacingAndOrigin ( int dimensions[3],

float Spacing[3],

float origin[3]

) [protected]

void vtkVolume16Reader::ReadImage ( int ImageNumber,

vtkUnsignedShortArray *

) [protected]

void vtkVolume16Reader::ReadVolume ( int FirstImage,

int LastImage,

vtkUnsignedShortArray *

) [protected]

int vtkVolume16Reader::Read16BitImage ( FILE * fp,

unsigned short * pixels,

int xsize,

int ysize,

int skip,

int swapBytes

) [protected]

Member Data Documentation

int vtkVolume16Reader::DataDimensions[2] [protected]

Definition at line 153 of file vtkVolume16Reader.h.

unsigned short vtkVolume16Reader::DataMask [protected]

Definition at line 154 of file vtkVolume16Reader.h.

int vtkVolume16Reader::SwapBytes [protected]

Definition at line 155 of file vtkVolume16Reader.h.

int vtkVolume16Reader::HeaderSize [protected]

Definition at line 156 of file vtkVolume16Reader.h.

vtkTransform* vtkVolume16Reader::Transform [protected]

Definition at line 157 of file vtkVolume16Reader.h.

The documentation for this class was generated from the following file:

IO/vtkVolume16Reader.h


Public Types
typedef vtkVolumeReader	Superclass
Public Methods
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
vtkImageData *	GetImage (int ImageNumber)

virtual void	SetDataDimensions (int, int)
void	SetDataDimensions (int[2])
virtual int *	GetDataDimensions ()
virtual void	GetDataDimensions (int data[2])

virtual void	SetDataMask (unsigned short)
virtual unsigned short	GetDataMask ()

virtual void	SetHeaderSize (int)
virtual int	GetHeaderSize ()

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

virtual void	SetSwapBytes (int)
virtual int	GetSwapBytes ()
virtual void	SwapBytesOn ()
virtual void	SwapBytesOff ()

virtual void	SetTransform (vtkTransform *)
virtual vtkTransform *	GetTransform ()
Static Public Methods
int	IsTypeOf (const char *type)
vtkVolume16Reader *	SafeDownCast (vtkObject *o)
vtkVolume16Reader *	New ()
Protected Methods
	vtkVolume16Reader ()
	~vtkVolume16Reader ()
virtual void	ExecuteData (vtkDataObject *)
virtual void	ExecuteInformation ()
void	TransformSlice (unsigned short slice, unsigned short pixels, int k, int dimensions[3], int bounds[3])
void	ComputeTransformedDimensions (int dimensions[3])
void	ComputeTransformedBounds (int bounds[6])
void	ComputeTransformedSpacing (float Spacing[3])
void	ComputeTransformedOrigin (float origin[3])
void	AdjustSpacingAndOrigin (int dimensions[3], float Spacing[3], float origin[3])
void	ReadImage (int ImageNumber, vtkUnsignedShortArray *)
void	ReadVolume (int FirstImage, int LastImage, vtkUnsignedShortArray *)
int	Read16BitImage (FILE fp, unsigned short pixels, int xsize, int ysize, int skip, int swapBytes)
Protected Attributes
int	DataDimensions [2]
unsigned short	DataMask
int	SwapBytes
int	HeaderSize
vtkTransform *	Transform