Abstract base class for volume data writer. More...

#include <LDM/writers/SoVolumeWriter.h>

Inheritance diagram for SoVolumeWriter:

Public Types
enum	WordFormat { WF_BIG_ENDIAN = 0 , WF_LITTLE_ENDIAN = 1 }
	Endianess. More...

Public Member Functions
virtual SoType	getTypeId () const
	Returns the type identifier for this specific instance.

virtual SbBool	initialize ()
	Initialize writer.

virtual SbBool	closeAllHandles ()
	Close all ressources that are locked by the writer so that someone else can read or write to them.

virtual SbBool	restoreAllHandles ()
	Restore ressources that was closed by closeAllHandles.

virtual SbBool	isDataConverted () const =0
	Returns TRUE if the data is already organized in tiles for the LDM module.

virtual SbBool	writeTile (const SoLDMTileID &tileId, SoBufferObject *buffer)
	Given a tileID, writes a tile if the data is organized in tiles (see SoLDMTileID).

virtual SbBool	writeSubSlice (int sliceIndex, const SbBox2i32 &subSlice, SoBufferObject *buffer)
	Writes the data contained in the specified subslice.

virtual SbBool	finish ()
	Finish writing the file, free ressources, ... depending on kind of writer.

Public Member Functions inherited from SoFieldContainer
void	setToDefaults ()
	Sets all fields in this object to their default values.

SbBool	hasDefaultValues () const
	Returns TRUE if all of the object's fields have their default values.

SbBool	fieldsAreEqual (const SoFieldContainer *fc) const
	Returns TRUE if this object's fields are exactly equal to fc's fields.

void	copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE)
	Copies the contents of fc's fields into this object's fields.

SoNONUNICODE SbBool	set (const char *fieldDataString)
	Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.

SbBool	set (const SbString &fieldDataString)
	Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.

void	get (SbString &fieldDataString)
	Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string.

virtual int	getFields (SoFieldList &list) const
	Appends references to all of this object's fields to resultList, and returns the number of fields appended.

virtual int	getAllFields (SoFieldList &list) const
	Returns a list of fields, including the eventIn's and eventOut's.

virtual SoField *	getField (const SbName &fieldName) const
	Returns a the field of this object whose name is fieldName.

virtual SoField *	getEventIn (const SbName &fieldName) const
	Returns a the eventIn with the given name.

virtual SoField *	getEventOut (const SbName &fieldName) const
	Returns the eventOut with the given name.

SbBool	getFieldName (const SoField *field, SbName &fieldName) const
	Returns the name of the given field in the fieldName argument.

SbBool	enableNotify (SbBool flag)
	Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE).

SbBool	isNotifyEnabled () const
	Notification is the process of telling interested objects that this object has changed.

virtual void	setUserData (void *data)
	Sets application data.

void *	getUserData (void) const
	Gets user application data.

Public Member Functions inherited from SoBase
virtual void	touch ()
	Marks an instance as modified, simulating a change to it.

virtual SbName	getName () const
	Returns the name of an instance.

virtual void	setName (const SbName &name)
	Sets the name of an instance.

void	setSynchronizable (const bool b)
	Sets this to be a ScaleViz synchronizable object.

bool	isSynchronizable () const
	Gets the ScaleViz synchronizable state of this object.

Public Member Functions inherited from SoRefCounter
void	ref () const
	Adds a reference to an instance.

void	unref () const
	Removes a reference from an instance.

void	unrefNoDelete () const
	unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero.

int	getRefCount () const
	Returns current reference count.

void	lock () const
	lock this instance.

void	unlock () const
	unlock this instance.

Public Member Functions inherited from SoTypedObject
SbBool	isOfType (const SoType &type) const
	Returns TRUE if this object is of the type specified in type or is derived from that type.

template<typename TypedObjectClass >
SbBool	isOfType () const
	Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class.

Static Public Member Functions
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Static Public Member Functions inherited from SoFieldContainer
static SoType	getClassTypeId ()
	Returns the type of this class.

Static Public Member Functions inherited from SoBase
static SoType	getClassTypeId ()
	Returns type identifier for this class.

Static Public Member Functions inherited from SoTypedObject
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Public Attributes
SoSFBox3f	extent
	Extent of dataset.

SoSFVec3i32	dimension
	Dimension of dataset, in voxels.

SoSFEnum	dataType
	Type of input data (that will be given in the writeXXX method) Use enum SoDataSet::DataType.

SoSFEnum	wordFormat
	Endianess of data.

Detailed Description

Abstract base class for volume data writer.

Base class used to write volume data. Data are generally organised by tiles (like in LDM) or by slices (like in DICOM).

The isDataConverted() method must be reimplemented in derived classes and return TRUE if the data is organized in tiles. In this case, the writeTile() method MUST be implemented and will be used to write data.

If isDataConverted() returns FALSE, the writeSubSlice() method MUST be implemented and will be used to write data.

EXAMPLE

SoVRLdmFileWriter* writer = new SoVRLdmFileWriter();
// set parameters
writer->headerFilename = "myFile.ldm";
writer->dimension.setValue( 128, 128, 128 );
writer->extent.setValue( -1,-1,-1, 1,1,1  );
 
// Initialize
writer->initialize();
 
// Write data
if ( writer->isDataConverted() ) {
  SoLDMTileID tileID = 0;
  SoCpuBufferObject* tileBuffer = new SoCpuBufferObject();
  writer->writeTile( tileID, tileBuffer );
}
else {
  int sliceIndex = 0;
  SbBox2i32 subSlice( 0,0, 128,128 );
  SoCpuBufferObject* sliceBuffer = new SoCpuBufferObject();
  writer->writeSubSlice( sliceIndex, subSlice, sliceBuffer );
}
 
// Finalize
writer->finish();

Member Enumeration Documentation

◆ WordFormat

enum SoVolumeWriter::WordFormat

Endianess.

Big endian or little endian.

Enumerator
WF_BIG_ENDIAN
WF_LITTLE_ENDIAN

Definition at line 172 of file SoVolumeWriter.h.

Member Function Documentation

◆ closeAllHandles()

virtual SbBool SoVolumeWriter::closeAllHandles ( )

virtual

Close all ressources that are locked by the writer so that someone else can read or write to them.

For example, if the writer write to a file, this method must close the file so that someone else can re-open it in read mode.

Reimplemented in SoVRLdmFileWriter.

◆ finish()

virtual SbBool SoVolumeWriter::finish ( )

virtual

Finish writing the file, free ressources, ... depending on kind of writer.

Reimplemented in SoVRLdmFileWriter.

◆ getClassTypeId()

static SoType SoVolumeWriter::getClassTypeId ( )

static

Returns the type identifier for this class.

◆ getTypeId()

virtual SoType SoVolumeWriter::getTypeId ( ) const

virtual

Returns the type identifier for this specific instance.

Implements SoTypedObject.

Reimplemented in SoVRLdmFileWriter, and SoVRMemoryWriter.

◆ initialize()

virtual SbBool SoVolumeWriter::initialize ( )

virtual

Initialize writer.

Allocates memory and other resources depending on the kind of writer.
By default do nothing.

Reimplemented in SoVRLdmFileWriter, and SoVRMemoryWriter.

◆ isDataConverted()

virtual SbBool SoVolumeWriter::isDataConverted ( ) const

pure virtual

Returns TRUE if the data is already organized in tiles for the LDM module.

In other words, all writers that directly support the writeTile() method should return TRUE from isDataConverted.

If TRUE is returned, VolumeViz will use the writeTile method and will not call writeSubVolume() or writeSubSlice().

Must be reimplemented in children classes.

Implemented in SoVRLdmFileWriter, and SoVRMemoryWriter.

◆ restoreAllHandles()

virtual SbBool SoVolumeWriter::restoreAllHandles ( )

virtual

Restore ressources that was closed by closeAllHandles.

Reimplemented in SoVRLdmFileWriter.

◆ writeSubSlice()

virtual SbBool SoVolumeWriter::writeSubSlice	(	int	sliceIndex,
		const SbBox2i32 &	subSlice,
		SoBufferObject *	buffer
	)

virtual

Writes the data contained in the specified subslice.

This function must be called only if isDataConverted() return FALSE.

Must be reimplemented in children classes.

Reimplemented in SoVRMemoryWriter.

◆ writeTile()

virtual SbBool SoVolumeWriter::writeTile	(	const SoLDMTileID &	tileId,
		SoBufferObject *	buffer
	)

virtual

Given a tileID, writes a tile if the data is organized in tiles (see SoLDMTileID).

This function must be called only if isDataConverted() return TRUE.

Must be reimplemented in children classes.

Please refer to SoLDMTileID and SoLDMTopoOctree for relation between tileId and tile position.

Reimplemented in SoVRLdmFileWriter.

Member Data Documentation

◆ dataType

SoSFEnum SoVolumeWriter::dataType

Type of input data (that will be given in the writeXXX method) Use enum SoDataSet::DataType.

Default is UNSIGNED_BYTE.

Definition at line 163 of file SoVolumeWriter.h.

◆ dimension

SoSFVec3i32 SoVolumeWriter::dimension

Dimension of dataset, in voxels.

Default is empty.

Definition at line 157 of file SoVolumeWriter.h.

◆ extent

SoSFBox3f SoVolumeWriter::extent

Extent of dataset.

Default is (-1, -1, -1, 1, 1, 1)

Definition at line 154 of file SoVolumeWriter.h.

◆ wordFormat

SoSFEnum SoVolumeWriter::wordFormat

Endianess of data.

Use enum WordFormat. Default is current machine endianess.

Definition at line 169 of file SoVolumeWriter.h.

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

LDM/writers/SoVolumeWriter.h

Open Inventor Release 2024.2.1

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

EXAMPLE

SEE ALSO

Member Enumeration Documentation

◆ WordFormat

Member Function Documentation

◆ closeAllHandles()

◆ finish()

◆ getClassTypeId()

◆ getTypeId()

◆ initialize()

◆ isDataConverted()

◆ restoreAllHandles()

◆ writeSubSlice()

◆ writeTile()

Member Data Documentation

◆ dataType

◆ dimension

◆ extent

◆ wordFormat