hierarchical representation to use with vtkPartitionedDataSetCollection More...

#include <vtkDataAssembly.h>

Inheritance diagram for vtkDataAssembly:

Collaboration diagram for vtkDataAssembly:

Public Types
enum	TraversalOrder { DepthFirst = 0 , BreadthFirst }

typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkDataAssembly *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	Initialize ()
	Initializes the data-assembly.

int	AddNode (const char *name, int parent=0)
	Adds a node to the assembly with the given name and returns its id.

std::vector< int >	AddNodes (const std::vector< std::string > &names, int parent=0)
	Same as `AddNode` except allows adding multiple nodes in one go.

int	AddSubtree (int parent, vtkDataAssembly *other, int otherParent=0)
	Add a subtree by copy the nodes from another tree starting with the specified parent index.

bool	RemoveNode (int id)
	Removes a node from the assembly.

std::string	GetNodePath (int id) const
	Returns the path for a node.

int	GetFirstNodeByPath (const char *path) const
	Return a node id given the path.

bool	AddDataSetIndex (int id, unsigned int dataset_index)
	Add a dataset index to a node.

bool	AddDataSetIndices (int id, const std::vector< unsigned int > &dataset_indices)
	Same as `AddDataSetIndex` except supports adding multiple dataset indices in one go.

bool	AddDataSetIndexRange (int id, unsigned int index_start, int count)
	Same as `AddDataSetIndices` except this supports adding a contiguous range of dataset indices in one go.

bool	RemoveDataSetIndex (int id, unsigned int dataset_index)
	Removes a dataset index from a node.

bool	RemoveAllDataSetIndices (int id, bool traverse_subtree=true)
	Clears all dataset indices from the node.

int	FindFirstNodeWithName (const char *name, int traversal_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Finds first node that is encountered in a breadth first traversal of the assembly with the given name.

std::vector< int >	FindNodesWithName (const char *name, int sort_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Finds all nodes with the given name.

std::vector< int >	GetChildNodes (int parent, bool traverse_subtree=true, int traversal_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Returns ids for all child nodes.

int	GetNumberOfChildren (int parent) const
	Returns the number of child nodes.

int	GetChild (int parent, int index) const
	Returns the id for a child not at the given index, if valid, otherwise -1.

int	GetChildIndex (int parent, int child) const
	Returns the index for a child under a given.

int	GetParent (int id) const
	Returns the id for the parent node, if any.

bool	HasAttribute (int id, const char *name) const
	Returns true if attribute with the given name is present on the chosen node.

std::vector< int >	SelectNodes (const std::vector< std::string > &path_queries, int traversal_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Returns ids for nodes matching the path_queries.

bool	RemapDataSetIndices (const std::map< unsigned int, unsigned int > &mapping, bool remove_unmapped)
	Remap dataset indices.

void	SubsetCopy (vtkDataAssembly *other, const std::vector< int > &selected_branches)
	Create a deep-copy of other by only passing the chosen branches.

void	DeepCopy (vtkDataAssembly *other)
	Deep copy the `other`.


bool	InitializeFromXML (const char *xmlcontents)
	Initializes a data-assembly using an XML representation of the assembly.


std::string	SerializeToXML (vtkIndent indent) const
	Saves the data-assembly as a XML.


void	SetRootNodeName (const char *name)
	Get/Set root node name.

const char *	GetRootNodeName () const
	Get/Set root node name.


void	SetNodeName (int id, const char *name)
	Get/Set a node's name.

const char *	GetNodeName (int id) const
	Get/Set a node's name.


void	SetAttribute (int id, const char name, const char value)
	Set an attribute.

void	SetAttribute (int id, const char *name, int value)
	Set an attribute.

void	SetAttribute (int id, const char *name, unsigned int value)
	Set an attribute.


bool	GetAttribute (int id, const char name, const char &value) const
	Get an attribute value.

bool	GetAttribute (int id, const char *name, int &value) const
	Get an attribute value.

bool	GetAttribute (int id, const char *name, unsigned int &value) const
	Get an attribute value.


const char *	GetAttributeOrDefault (int id, const char name, const char default_value) const
	Get an attribute value.

int	GetAttributeOrDefault (int id, const char *name, int default_value) const
	Get an attribute value.

unsigned int	GetAttributeOrDefault (int id, const char *name, unsigned int default_value) const
	Get an attribute value.


void	Visit (vtkDataAssemblyVisitor *visitor, int traversal_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Visit each node in the assembly for processing.

void	Visit (int id, vtkDataAssemblyVisitor *visitor, int traversal_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Visit each node in the assembly for processing.


std::vector< unsigned int >	GetDataSetIndices (int id, bool traverse_subtree=true, int traversal_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Returns the dataset indices associated with the node.

std::vector< unsigned int >	GetDataSetIndices (const std::vector< int > &ids, bool traverse_subtree=true, int traversal_order=vtkDataAssembly::TraversalOrder::DepthFirst) const
	Returns the dataset indices associated with the node.

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on.

virtual void	DebugOff ()
	Turn debugging output off.

bool	GetDebug ()
	Get the value of the debug flag.

void	SetDebug (bool debugFlag)
	Set the value of the debug flag.

virtual void	Modified ()
	Update the modification time for this object.

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method.

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.

int	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not.

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.

virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

virtual void	Delete ()
	Delete a VTK object.

virtual void	FastDelete ()
	Delete a reference to this object.

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream.

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object).

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object).

int	GetReferenceCount ()
	Return the current reference count of this object.

void	SetReferenceCount (int)
	Sets the reference count.

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space.

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

Static Public Member Functions
static vtkDataAssembly *	New ()

static vtkTypeBool	IsTypeOf (const char *type)

static vtkDataAssembly *	SafeDownCast (vtkObjectBase *o)

static int	GetRootNode ()
	Returns the ID for the root node.

static bool	IsNodeNameValid (const char *name)
	Validates a node name.

static std::string	MakeValidNodeName (const char *name)
	Converts any string to a string that is a valid node name.

static bool	IsNodeNameReserved (const char *name)
	Returns true for node names that are reserved.

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes.

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkDataAssembly ()

	~vtkDataAssembly () override

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events.

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Additional Inherited Members
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

hierarchical representation to use with vtkPartitionedDataSetCollection

vtkDataAssembly is a mechanism to represent hierarchical organization of items (or vtkPartitionedDataSet instances) in a vtkPartitionedDataSetCollection. vtkPartitionedDataSetCollection is similar to a vtkMultiBlockDataSet since it provides a means for putting together multiple non-composite datasets. However, vtkPartitionedDataSetCollection itself doesn't provide any mechanism to define relationships between items in the collections. That is done using vtkDataAssembly.

Overview

At its core, vtkDataAssembly is simply a tree of nodes starting with the root node. Each node has a unique id and a string name (names need not be unique). On initialization with vtkDataAssembly::Initialize, an empty tree with a root node is created. The root node's id and name can be obtained using vtkDataAssembly::GetRootNode and vtkDataAssembly::GetRootNodeName. The root node's id is fixed (vtkDataAssembly::GetRootNode), however the name can be changed using vtkDataAssembly::SetRootNodeName.

Child nodes can be added using vtkDataAssembly::AddNode or vtkDataAssembly::AddNodes, each of which returns the ids for every child node added. A non-root node can be removed using vtkDataAssembly::RemoveNode.

Each node in the tree (including the root node) can have associated dataset indices. For a vtkDataAssembly associated with a vtkPartitionedDataSetCollection, these indices refer to the item index, or partitioned-dataset-index for items in the collection. Dataset indices can be specified using vtkDataAssembly::AddDataSetIndex, vtkDataAssembly::AddDataSetIndices and removed using vtkDataAssembly::RemoveDataSetIndex, vtkDataAssembly::RemoveAllDataSetIndices. vtkDataAssembly::GetDataSetIndices provides a mechanism to get the database indices associated with a node, and optionally, the entire subtree rooted at the chosen node.

Searching

Each node in the vtkDataAssembly is assigned a unique id. vtkDataAssembly::FindFirstNodeWithName and vtkDataAssembly::FindNodesWithName can be used to get the id(s) for node(s) with given name.

vtkDataAssembly::SelectNodes provides a more flexible mechanism to find nodes using name-based queries. Section Supported Path Queries covers supported queries.

Traversal

vtkDataAssemblyVisitor defines a visitor API. An instance of a concretized vtkDataAssemblyVisitor subclass can be passed to vtkDataAssembly::Visit to traverse the data-assembly hierarchy either in depth-first or breadth-first order.

Supported Path Queries

vtkDataAssembly::SelectNodes can be used find nodes that match the specified query (or queries) using XPath 1.0 syntax.

For example:

'/' is used as the path separator. If a node name has a / it must be escaped using \\ in the query. Note, escaping is not necessary when using SetNodeName/GetNodeName.
'/' selects the root node.
'/nodename' selects all child nodes of the root with the name 'nodename'.
'//nodename' selects all nodes with 'nodename' that are descendants of the root; thus, this this will traverse the entire tree.
'/nodename/' selects all child nodes of all nodes named 'nodename' under the root; thus, ending a query with '/' selects the children of the found nodes rather than the nodes themselves.
'/nodename1/nodename2' selects all nodes named 'nodename2' which are childen of nodes with name 'nodename1' that are themselves children of the root node.
'//nodename1/nodename2' finds all nodes in the tree named 'nodename1' and then selects all chidren of these found nodes that are named 'nodename2'.

Applications

The separation of dataset storage (vtkPartitionedDataSetCollection) and organization (vtkDataAssembly) enables development of algorithms that can expose APIs that are not tightly coupled to dataset storage. Together, vtkPartitionedDataSetCollection and vtkDataAssembly can be thought of as a different way of organizing data that was previously organized as a vtkMultiBlockDataSet. The advantage of the this newer approach is that filters can support specifying parameters using paths or path queries rather than composite indices. The composite indices suffered from the fact that they made no sense except for the specific vtkMultiBlockDataSet they were applied too. Thus, if the filters input was changed, the composite ids rarely made any sense and needed to be updated. Paths and path queries, however, do not suffer from this issue.

Definition at line 130 of file vtkDataAssembly.h.

Member Typedef Documentation

◆ Superclass

typedef vtkObject vtkDataAssembly::Superclass

Definition at line 134 of file vtkDataAssembly.h.

Member Enumeration Documentation

◆ TraversalOrder

enum vtkDataAssembly::TraversalOrder

Enumerator
DepthFirst
BreadthFirst

Definition at line 277 of file vtkDataAssembly.h.

Constructor & Destructor Documentation

◆ vtkDataAssembly()

vtkDataAssembly::vtkDataAssembly ( )

protected

◆ ~vtkDataAssembly()

vtkDataAssembly::~vtkDataAssembly ( )

overrideprotected

Member Function Documentation

◆ New()

static vtkDataAssembly * vtkDataAssembly::New ( )

static

◆ IsTypeOf()

static vtkTypeBool vtkDataAssembly::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkDataAssembly::IsA ( const char * name )

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 vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObjectBase.

◆ SafeDownCast()

static vtkDataAssembly * vtkDataAssembly::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkDataAssembly::NewInstanceInternal ( ) const

protectedvirtual

◆ NewInstance()

vtkDataAssembly * vtkDataAssembly::NewInstance ( ) const

◆ PrintSelf()

void vtkDataAssembly::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

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 vtkObject.

◆ Initialize()

void vtkDataAssembly::Initialize ( )

Initializes the data-assembly.

When a new vtkDataAssembly instance is created, it is in initialized form and it is not required to call this method to initialize it.

◆ InitializeFromXML()

bool vtkDataAssembly::InitializeFromXML ( const char * xmlcontents )

Initializes a data-assembly using an XML representation of the assembly.

Returns true if the initialization was successful, otherwise the assembly is set a clean state and returns false.

◆ SerializeToXML()

std::string vtkDataAssembly::SerializeToXML ( vtkIndent indent ) const

Saves the data-assembly as a XML.

◆ GetRootNode()

static int vtkDataAssembly::GetRootNode ( )

inlinestatic

Returns the ID for the root node.

This always returns 0.

Definition at line 164 of file vtkDataAssembly.h.

◆ SetRootNodeName()

void vtkDataAssembly::SetRootNodeName ( const char * name )

inline

Get/Set root node name.

Defaults to DataAssembly.

Definition at line 170 of file vtkDataAssembly.h.

◆ GetRootNodeName()

const char * vtkDataAssembly::GetRootNodeName ( ) const

inline

Get/Set root node name.

Defaults to DataAssembly.

Definition at line 171 of file vtkDataAssembly.h.

◆ AddNode()

int vtkDataAssembly::AddNode	(	const char *	name,
		int	parent = `0`
	)

Adds a node to the assembly with the given name and returns its id.

parent is the id for the parent node which defaults to the root node id (i.e. GetRootNode).

If parent is invalid, the add will fail.

Returns: id of the newly added node on success, else -1.

◆ AddNodes()

std::vector< int > vtkDataAssembly::AddNodes	(	const std::vector< std::string > &	names,
		int	parent = `0`
	)

Same as AddNode except allows adding multiple nodes in one go.

If parent is invalid, the add will fail.

Returns: vectors of corresponding indices for each of the names added.

◆ AddSubtree()

int vtkDataAssembly::AddSubtree	(	int	parent,
		vtkDataAssembly *	other,
		int	otherParent = `0`
	)

Add a subtree by copy the nodes from another tree starting with the specified parent index.

◆ RemoveNode()

bool vtkDataAssembly::RemoveNode ( int id )

Removes a node from the assembly.

The node identified by the id and all its children are removed.

Root node cannot be removed.

Returns: true if removal was successful, false if the id is invalid or root node id.

◆ SetNodeName()

void vtkDataAssembly::SetNodeName	(	int	id,
		const char *	name
	)

Get/Set a node's name.

If node id is invalid, SetNodeName will raise an error; GetNodeName will also raise an error and return nullptr.

SetNodeName will raise an error if the name is not valid. Name cannot be empty or nullptr.

◆ GetNodeName()

const char * vtkDataAssembly::GetNodeName ( int id ) const

Get/Set a node's name.

If node id is invalid, SetNodeName will raise an error; GetNodeName will also raise an error and return nullptr.

SetNodeName will raise an error if the name is not valid. Name cannot be empty or nullptr.

◆ GetNodePath()

std::string vtkDataAssembly::GetNodePath ( int id ) const

Returns the path for a node.

◆ GetFirstNodeByPath()

int vtkDataAssembly::GetFirstNodeByPath ( const char * path ) const

Return a node id given the path.

Returns -1 if path is not valid.

◆ AddDataSetIndex()

bool vtkDataAssembly::AddDataSetIndex	(	int	id,
		unsigned int	dataset_index
	)

Add a dataset index to a node.

The node id can refer to any valid node in the assembly, including the root.

While the same dataset can be added multiple times in the assembly, it cannot be added multiple times to the same node. Additional adds will fail.

Returns: true if addition succeeded else false.

◆ AddDataSetIndices()

bool vtkDataAssembly::AddDataSetIndices	(	int	id,
		const std::vector< unsigned int > &	dataset_indices
	)

Same as AddDataSetIndex except supports adding multiple dataset indices in one go.

Note, a dataset index only gets added once.

Returns: true if any dataset index was successfully added.

◆ AddDataSetIndexRange()

bool vtkDataAssembly::AddDataSetIndexRange	(	int	id,
		unsigned int	index_start,
		int	count
	)

Same as AddDataSetIndices except this supports adding a contiguous range of dataset indices in one go.

@ returns true if any dataset index was successfully added.

◆ RemoveDataSetIndex()

bool vtkDataAssembly::RemoveDataSetIndex	(	int	id,
		unsigned int	dataset_index
	)

Removes a dataset index from a node.

Returns: true if the removal was successful, else returns false.

◆ RemoveAllDataSetIndices()

bool vtkDataAssembly::RemoveAllDataSetIndices	(	int	id,
		bool	traverse_subtree = `true`
	)

Clears all dataset indices from the node.

If traverse_subtree is true (default), recursively removes all dataset indices from all the child nodes.

Returns: true on success, else returns false.

◆ FindFirstNodeWithName()

int vtkDataAssembly::FindFirstNodeWithName	(	const char *	name,
		int	traversal_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

Finds first node that is encountered in a breadth first traversal of the assembly with the given name.

Returns: the if of the node if found, else -1.

◆ FindNodesWithName()

std::vector< int > vtkDataAssembly::FindNodesWithName	(	const char *	name,
		int	sort_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

Finds all nodes with the given name.

The nodes can be ordered depth first or breadth first, based on the sort_order flag.

◆ GetChildNodes()

std::vector< int > vtkDataAssembly::GetChildNodes	(	int	parent,
		bool	traverse_subtree = `true`,
		int	traversal_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

Returns ids for all child nodes.

If traverse_subtree is true (default), recursively builds the child node list. The traversal order can be specified using traversal_order flag; defaults to depth-first.

See also: vtkDataAssembly::Visit, vtkDataAssemblyVisitor

◆ GetNumberOfChildren()

int vtkDataAssembly::GetNumberOfChildren ( int parent ) const

Returns the number of child nodes.

Returns: the number of child nodes for the parent node or 0 if the parent is invalid.

◆ GetChild()

int vtkDataAssembly::GetChild	(	int	parent,
		int	index
	)		const

Returns the id for a child not at the given index, if valid, otherwise -1.

◆ GetChildIndex()

int vtkDataAssembly::GetChildIndex	(	int	parent,
		int	child
	)		const

Returns the index for a child under a given.

-1 if invalid.

◆ GetParent()

int vtkDataAssembly::GetParent ( int id ) const

Returns the id for the parent node, if any.

Returns -1 if the node is invalid or has no parent (i.e. is the root node).

◆ HasAttribute()

bool vtkDataAssembly::HasAttribute	(	int	id,
		const char *	name
	)		const

Returns true if attribute with the given name is present on the chosen node.

◆ SetAttribute() [1/3]

void vtkDataAssembly::SetAttribute	(	int	id,
		const char *	name,
		const char *	value
	)

Set an attribute.

Will replace an existing attribute with the same name if present.

◆ SetAttribute() [2/3]

void vtkDataAssembly::SetAttribute	(	int	id,
		const char *	name,
		int	value
	)

Set an attribute.

Will replace an existing attribute with the same name if present.

◆ SetAttribute() [3/3]

void vtkDataAssembly::SetAttribute	(	int	id,
		const char *	name,
		unsigned int	value
	)

Set an attribute.

Will replace an existing attribute with the same name if present.

◆ GetAttribute() [1/3]

bool vtkDataAssembly::GetAttribute	(	int	id,
		const char *	name,
		const char *&	value
	)		const

Get an attribute value.

Returns true if a value was provided else false.

◆ GetAttribute() [2/3]

bool vtkDataAssembly::GetAttribute	(	int	id,
		const char *	name,
		int &	value
	)		const

Get an attribute value.

Returns true if a value was provided else false.

◆ GetAttribute() [3/3]

bool vtkDataAssembly::GetAttribute	(	int	id,
		const char *	name,
		unsigned int &	value
	)		const

Get an attribute value.

Returns true if a value was provided else false.

◆ GetAttributeOrDefault() [1/3]

const char * vtkDataAssembly::GetAttributeOrDefault	(	int	id,
		const char *	name,
		const char *	default_value
	)		const

Get an attribute value.

Returns the value associated with the node or the provided default value.

◆ GetAttributeOrDefault() [2/3]

int vtkDataAssembly::GetAttributeOrDefault	(	int	id,
		const char *	name,
		int	default_value
	)		const

Get an attribute value.

Returns the value associated with the node or the provided default value.

◆ GetAttributeOrDefault() [3/3]

unsigned int vtkDataAssembly::GetAttributeOrDefault	(	int	id,
		const char *	name,
		unsigned int	default_value
	)		const

Get an attribute value.

Returns the value associated with the node or the provided default value.

◆ Visit() [1/2]

void vtkDataAssembly::Visit	(	vtkDataAssemblyVisitor *	visitor,
		int	traversal_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

inline

Visit each node in the assembly for processing.

The traversal order can be specified using traversal_order which defaults to depth-first.

Definition at line 385 of file vtkDataAssembly.h.

◆ Visit() [2/2]

void vtkDataAssembly::Visit	(	int	id,
		vtkDataAssemblyVisitor *	visitor,
		int	traversal_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

Visit each node in the assembly for processing.

The traversal order can be specified using traversal_order which defaults to depth-first.

◆ GetDataSetIndices() [1/2]

std::vector< unsigned int > vtkDataAssembly::GetDataSetIndices	(	int	id,
		bool	traverse_subtree = `true`,
		int	traversal_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

Returns the dataset indices associated with the node.

If traverse_subtree is true (default), recursively builds the dataset indices list for the node and all its child nodes. Note, a dataset index will only appear once in the output even if it is encountered on multiple nodes in the subtree.

When traverse_subtree is true, the traversal order can be specified using traversal_order. Defaults to depth-first.

◆ GetDataSetIndices() [2/2]

std::vector< unsigned int > vtkDataAssembly::GetDataSetIndices	(	const std::vector< int > &	ids,
		bool	traverse_subtree = `true`,
		int	traversal_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

Returns the dataset indices associated with the node.

If traverse_subtree is true (default), recursively builds the dataset indices list for the node and all its child nodes. Note, a dataset index will only appear once in the output even if it is encountered on multiple nodes in the subtree.

When traverse_subtree is true, the traversal order can be specified using traversal_order. Defaults to depth-first.

◆ SelectNodes()

std::vector< int > vtkDataAssembly::SelectNodes	(	const std::vector< std::string > &	path_queries,
		int	traversal_order = `vtkDataAssembly::TraversalOrder::DepthFirst`
	)		const

Returns ids for nodes matching the path_queries.

See Section Supported Path Queries for supported query expressions.

Will return an empty vector is no nodes match the requested query.

Returns: node ids matching the query in traversal order chosen using traversal_order.

◆ RemapDataSetIndices()

bool vtkDataAssembly::RemapDataSetIndices	(	const std::map< unsigned int, unsigned int > &	mapping,
		bool	remove_unmapped
	)

Remap dataset indices.

mapping is map where the key is the old index and value is the new index. If remove_unmapped is true, then any dataset not in the map will be removed.

◆ SubsetCopy()

void vtkDataAssembly::SubsetCopy	(	vtkDataAssembly *	other,
		const std::vector< int > &	selected_branches
	)

Create a deep-copy of other by only passing the chosen branches.

All other branches of the tree will be pruned. Note this method never affects the depth of the selected branches or dataset indices attached to any of the nodes in pruned output.

◆ DeepCopy()

void vtkDataAssembly::DeepCopy ( vtkDataAssembly * other )

Deep copy the other.

◆ IsNodeNameValid()

static bool vtkDataAssembly::IsNodeNameValid ( const char * name )

static

Validates a node name.

◆ MakeValidNodeName()

static std::string vtkDataAssembly::MakeValidNodeName ( const char * name )

static

Converts any string to a string that is a valid node name.

This is done by simply discarding any non-supported character. Additionally, if the first character is not a "_" or an alphabet, then the "_" is prepended.

◆ IsNodeNameReserved()

static bool vtkDataAssembly::IsNodeNameReserved ( const char * name )

static

Returns true for node names that are reserved.

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

Common/DataModel/vtkDataAssembly.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Overview

Searching

Traversal

Supported Path Queries

Applications

Member Typedef Documentation

◆ Superclass

Member Enumeration Documentation

◆ TraversalOrder

Constructor & Destructor Documentation

◆ vtkDataAssembly()

◆ ~vtkDataAssembly()

Member Function Documentation

◆ New()

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ Initialize()

◆ InitializeFromXML()

◆ SerializeToXML()

◆ GetRootNode()

◆ SetRootNodeName()

◆ GetRootNodeName()

◆ AddNode()

◆ AddNodes()

◆ AddSubtree()

◆ RemoveNode()

◆ SetNodeName()

◆ GetNodeName()

◆ GetNodePath()

◆ GetFirstNodeByPath()

◆ AddDataSetIndex()

◆ AddDataSetIndices()

◆ AddDataSetIndexRange()

◆ RemoveDataSetIndex()

◆ RemoveAllDataSetIndices()

◆ FindFirstNodeWithName()

◆ FindNodesWithName()

◆ GetChildNodes()

◆ GetNumberOfChildren()

◆ GetChild()

◆ GetChildIndex()

◆ GetParent()

◆ HasAttribute()

◆ SetAttribute() [1/3]

◆ SetAttribute() [2/3]

◆ SetAttribute() [3/3]

◆ GetAttribute() [1/3]

◆ GetAttribute() [2/3]

◆ GetAttribute() [3/3]

◆ GetAttributeOrDefault() [1/3]

◆ GetAttributeOrDefault() [2/3]

◆ GetAttributeOrDefault() [3/3]

◆ Visit() [1/2]

◆ Visit() [2/2]

◆ GetDataSetIndices() [1/2]

◆ GetDataSetIndices() [2/2]

◆ SelectNodes()

◆ RemapDataSetIndices()

◆ SubsetCopy()

◆ DeepCopy()

◆ IsNodeNameValid()

◆ MakeValidNodeName()

◆ IsNodeNameReserved()