Ufe::Path Class Reference

Identify an object or 3D path in the scene. More...

#include <path.h>

Public Types
typedef std::vector< PathSegment >	Segments
typedef PathSegment::Components	Components

Public Member Functions
	Path ()=default
	Default constructor. Creates an empty path. More...
	Path (const Segments &segments)
	Path (Segments &&segments) noexcept
	Path (const PathSegment &segment)
	Path (PathSegment &&segment) noexcept
	Move constructor. More...
	Path (const Path &)=default
	Default copy constructor. More...
Path &	operator= (const Path &)=default
	Default assignment operator. More...
	Path (Path &&) noexcept
	Move construction. Right hand side becomes empty. More...
Path &	operator= (Path &&rhs) noexcept
	Move assignment. Right hand side becomes empty. More...
Components::size_type	size () const
bool	empty () const
Path	pop () const
Path	popSegment () const
Path	popHead () const
Path	head (int nbComponents) const
PathComponent	back () const
Path	sibling (const PathComponent &newTail) const
bool	startsWith (const Path &prefix) const
Path	replaceComponent (int index, const PathComponent &replacement) const
Path	reparent (const Path &originalPrefix, const Path &newPrefix) const
Rtid	runTimeId () const
const Segments &	getSegments () const
Segments::size_type	nbSegments () const
std::string	string () const
std::int32_t	hash () const
bool	operator== (const Path &rhs) const
	Unfortunately no compiler-generated default equality operators. More...
bool	operator!= (const Path &rhs) const
	Unfortunately no compiler-generated default equality operators. More...
Path	operator+ (const PathSegment &rhs) const
Path	operator+ (const PathComponent &rhs) const
Path	operator+ (const std::string &rhs) const
Components::const_iterator	cbegin () const
	Iteration interface on PathComponents. More...
Components::const_iterator	begin () const
	Iteration interface on PathComponents. More...
Components::const_iterator	cend () const
	Iteration interface on PathComponents. More...
Components::const_iterator	end () const
	Iteration interface on PathComponents. More...
Components::iterator	begin ()
	Iteration interface on PathComponents. More...
Components::iterator	end ()
	Iteration interface on PathComponents. More...

Private Attributes
Segments	fSegments
Components	fComponents
std::int32_t	fHashValue {-1}

Detailed Description

Identify an object or 3D path in the scene.

A path consists of one or more path segments that identify an object in the scene. The objects are identified by name.

A path can represent containment, through compound nodes that recursively contain other nodes, or a 3D hierarchy, through parent nodes down to a child.

The runtime of a path is defined to be the runtime of its node, which is the runtime of the final segment.

The following examples show how to create a path.

        pathComponents = [ufe.PathComponent("c0"), ufe.PathComponent("c1"), ufe.PathComponent("c2"), ufe.PathComponent("c3")]
        ps2 = ufe.PathSegment(pathComponents, 1234, '/')
        singleSegmentPath = ufe.Path(ps2)

        # Resulting path:
        # /c0/c1/c2/c3
        self.assertEqual(len(singleSegmentPath), 4)

        pathSegments = [ufe.PathSegment("/pathSegment/with/multiple/components", 1234, '/'), ufe.PathSegment(".another.pathSegment.different.separator", 5678, '.'), ufe.PathSegment("|yet|another|pathSegment|pipeSeparator", 9012, '|')]
        p2 = ufe.Path(pathSegments)

        # Resulting path:
        # /pathSegment/with/multiple/components.another.pathSegment.different.separator|yet|another|pathSegment|pipeSeparator
        self.assertEqual(len(p2), 12)
        self.assertEqual(p2.nbSegments(), 3)

Definition at line 37 of file path.h.

Member Typedef Documentation

Components

typedef PathSegment::Components Ufe::Path::Components

Definition at line 42 of file path.h.

Segments

typedef std::vector<PathSegment> Ufe::Path::Segments

Definition at line 41 of file path.h.

Constructor & Destructor Documentation

Path() [1/7]

Ufe::Path::Path ( )

default

Default constructor. Creates an empty path.

Path() [2/7]

Ufe::Path::Path

(

const Segments &

segments

)

Create a Path by copying a vector of PathSegment.

Parameters

segments

PathSegments vector of PathSegment.

Path() [3/7]

Ufe::Path::Path ( Segments &&  segments )

noexcept

Create a Path by moving a vector of PathSegment.

Parameters

segments

PathSegments vector of PathSegment.

Path() [4/7]

Ufe::Path::Path

(

const PathSegment &

segment

)

Convenience to create a Path from a single PathSegment.

Parameters

segment

PathSegment.

Path() [5/7]

Ufe::Path::Path ( PathSegment &&  segment )

noexcept

Move constructor.

Path() [6/7]

Ufe::Path::Path ( const Path &  )

default

Default copy constructor.

Path() [7/7]

Ufe::Path::Path ( Path &&  )

noexcept

Move construction. Right hand side becomes empty.

Member Function Documentation

back()

PathComponent Ufe::Path::back

(

)

const

Returns

The PathComponent at the tail of the Path.

Exceptions

InvalidOperationOnPath

If Path is empty.

Referenced by Ufe::Trie< T >::move().

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begin() [1/2]

Components::const_iterator Ufe::Path::begin

(

)

const

Iteration interface on PathComponents.

begin() [2/2]

Components::iterator Ufe::Path::begin

(

)

Iteration interface on PathComponents.

cbegin()

Components::const_iterator Ufe::Path::cbegin

(

)

const

Iteration interface on PathComponents.

Referenced by Ufe::Trie< T >::containsAncestorHelper().

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cend()

Components::const_iterator Ufe::Path::cend

(

)

const

Iteration interface on PathComponents.

Referenced by Ufe::Trie< T >::containsAncestorHelper().

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empty()

bool Ufe::Path::empty

(

)

const

Convenience method for size() == 0.

Returns

True if the path is empty.

Referenced by Ufe::Trie< T >::containsAncestorHelper(), and Ufe::Trie< T >::containsDescendantHelper().

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end() [1/2]

Components::const_iterator Ufe::Path::end

(

)

const

Iteration interface on PathComponents.

end() [2/2]

Components::iterator Ufe::Path::end

(

)

Iteration interface on PathComponents.

getSegments()

const Segments& Ufe::Path::getSegments

(

)

const

Returns

PathSegments of Path.

hash()

std::int32_t Ufe::Path::hash

(

)

const

Returns

An integer hash value for the Path. This can be used to add Paths to hash maps.

Referenced by std::hash< Ufe_v4 ::Path >::operator()().

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head()

Path Ufe::Path::head

(

int

nbComponents

)

const

Parameters

nbComponents

The first n PathComponent to retrieve.

Returns

A copy of the Path that includes only the first n PathComponent. If n is negative, the last n PathComponent are removed.

Exceptions

InvalidOperationOnPath

If argument is 0, > size(), <= -size().

nbSegments()

Segments::size_type Ufe::Path::nbSegments

(

)

const

Returns

The number of segments in the Path.

operator!=()

bool Ufe::Path::operator!=

(

const Path &

rhs

)

const

Unfortunately no compiler-generated default equality operators.

operator+() [1/3]

Path Ufe::Path::operator+

(

const PathSegment &

rhs

)

const

Return a copy of the path with the argument appended. Versions with a path component or string argument throw InvalidOperationOnPath if the path is empty, as adding a component must be done to a segment with a valid runtime ID.

operator+() [2/3]

Path Ufe::Path::operator+

(

const PathComponent &

rhs

)

const

Return a copy of the path with the argument appended. Versions with a path component or string argument throw InvalidOperationOnPath if the path is empty, as adding a component must be done to a segment with a valid runtime ID.

operator+() [3/3]

Path Ufe::Path::operator+

(

const std::string &

rhs

)

const

Return a copy of the path with the argument appended. Versions with a path component or string argument throw InvalidOperationOnPath if the path is empty, as adding a component must be done to a segment with a valid runtime ID.

operator=() [1/2]

Path& Ufe::Path::operator= ( const Path &  )

default

Default assignment operator.

operator=() [2/2]

Path& Ufe::Path::operator= ( Path &&  rhs )

noexcept

Move assignment. Right hand side becomes empty.

operator==()

bool Ufe::Path::operator==

(

const Path &

rhs

)

const

Unfortunately no compiler-generated default equality operators.

pop()

Path Ufe::Path::pop

(

)

const

Returns

A copy of the Path with the tail PathComponent removed.

Exceptions

InvalidOperationOnPath

If Path is empty.

Referenced by Ufe::Trie< T >::move().

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popHead()

Path Ufe::Path::popHead

(

)

const

Returns

A copy of the Path with the head PathComponent removed.

Exceptions

InvalidOperationOnPath

If Path is empty.

popSegment()

Path Ufe::Path::popSegment

(

)

const

Returns

A copy of the Path with the tail PathSegment removed.

Exceptions

InvalidOperationOnPath

If Path is empty.

reparent()

Path Ufe::Path::reparent	(	const Path &	originalPrefix,
		const Path &	newPrefix
	)		const

Create a copy of the path, with the originalPrefix replaced by newPrefix. If the last PathSegment of newPrefix and the first PathSegment of *this which follows originalPrefix share a runTimeId and separator then those PathSegments will be merged into a single segment. If originalPrefix is empty then reparent appends *this to newPrefix.

Parameters

originalPrefix	Path of *this to be replaced. startsWith(originalPrefix) must return true or originalPrefix must be empty.
newPrefix	Path which replaces originalPrefix.

Returns

A copy of the path with originalPrefix replaced with newPrefix.

Exceptions

InvalidOperationOnPath

If originalPrefix is not empty and *this does not begin with originalPrefix.

replaceComponent()

Path Ufe::Path::replaceComponent	(	int	index,
		const PathComponent &	replacement
	)		const

Create a copy of the path, with the path component at index replaced with the argument.

Parameters

index	Index of component to replace.
replacement	New component.

Returns

A copy of the path with a single component replaced.

Exceptions

InvalidOperationOnPath

If index is < 0 or >= size().

runTimeId()

Rtid Ufe::Path::runTimeId

(

)

const

Returns

The runtime ID of the final PathSegment. If the Path is empty, returns a 0 (invalid) ID.

sibling()

Path Ufe::Path::sibling

(

const PathComponent &

newTail

)

const

Parameters

newTail

The tail component of the sibling path.

Returns

A copy of the Path with its tail component set to newTail.

Exceptions

InvalidOperationOnPath

If Path is empty.

size()

Components::size_type Ufe::Path::size

(

)

const

Returns

The number of components in the path.

startsWith()

bool Ufe::Path::startsWith

(

const Path &

prefix

)

const

Checks if the path begins with the given prefix. Will return true if the two paths are equal.

Returns

True if path starts with the prefix.

string()

std::string Ufe::Path::string

(

)

const

Returns

The string representation of the Path.

Member Data Documentation

fComponents

Components Ufe::Path::fComponents

private

Definition at line 187 of file path.h.

fHashValue

std::int32_t Ufe::Path::fHashValue {-1}

mutableprivate

Definition at line 191 of file path.h.

fSegments

Segments Ufe::Path::fSegments

private

Definition at line 183 of file path.h.

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

• common/include/ufe/path.h