Cache for derived edge, wire, and shell properties. More...

#include <BRepGraph_CacheDerivedState.hxx>

Inheritance diagram for BRepGraph_CacheDerivedState:

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Public Member Functions
const Standard_GUID &	ID () const override
	Returns the unique cache service GUID.

const TCollection_AsciiString &	Name () const override
	Returns the cache service display name.

void	Clear () noexcept override
	Clears all cached entries.

void	CopyFreshTo (const BRepGraph_CopyRemap &theCopy) const override
	Copy fresh, remappable derived-state entries into the target graph.

bool	IsDegenerated (BRepGraph_EdgeId theEdge)
	Test if an edge is degenerate (no 3D curve and vertex collapse). Computes and caches only Status - does NOT compute SameParameter/SameRange.

bool	SameParameter (BRepGraph_CoEdgeId theCoEdge)
	Test if a single coedge has SameParameter.

bool	SameRange (BRepGraph_CoEdgeId theCoEdge)
	Test if a single coedge has SameRange.

bool	IsClosed (BRepGraph_EdgeId theEdge)
	Test if an edge is closed (start vertex == end vertex). Computes and caches only IsClosed.

bool	GetWireIsClosed (BRepGraph_WireId theWire, bool &theClosed)
	Return wire closure, computing and storing a fresh entry.

void	SetWireIsClosed (BRepGraph_WireId theWire, bool theClosed)
	Store a pre-computed wire closure value.

bool	IsShellClosed (BRepGraph_ShellId theShell)
	Test if a shell is closed.

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor.

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing.

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter.

virtual	~Standard_Transient ()=default
	Destructor must be virtual.

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object.

bool	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type.

bool	IsInstance (const char *const theTypeName) const
	Returns a true value if this is an instance of TypeName.

bool	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.

bool	IsKind (const char *const theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.

int	GetRefCount () const noexcept
	Get the reference counter of this object.

void	IncrementRefCounter () noexcept
	Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations.

int	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement.

virtual void	Delete () const
	Memory deallocator for transient classes.

Static Public Member Functions
static const Standard_GUID &	GetID ()
	Returns the unique cache service GUID.

static bool	ComputeEdgeProperties (const BRepGraph &theGraph, BRepGraph_EdgeId theEdge, bool &theIsDegenerated, bool &theIsClosed)
	Compute edge-own derived state (Status, IsClosed). SameRange/SameParameter are per-CoEdge - use the per-CoEdge cache directly.

static bool	ComputeShellIsClosed (const BRepGraph &theGraph, BRepGraph_ShellId theShell)
	Compute shell closure directly from a BRepGraph without caching.

static bool	ComputeWireIsClosed (const BRepGraph &theGraph, BRepGraph_WireId theWire)
	Compute wire closure directly from a BRepGraph without caching.

Static Public Member Functions inherited from Standard_Transient
static constexpr const char *	get_type_name ()
	Returns a type descriptor about this object.

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class.

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object.

Protected Member Functions inherited from BRepGraph_Cache
	BRepGraph_Cache ()

bool	IsAttached () const noexcept
	True while this cache is registered in a live graph registry.

const BRepGraph &	Graph () const
	Attached graph for read-only cache services. Raises Standard_ProgramError if detached.

BRepGraph *	AttachedGraph () const noexcept
	Attached mutable graph for graph-owned cache services. Returns null if detached.

virtual void	OnAttached () noexcept
	Called after the cache is attached to a graph registry.

virtual void	OnDetached () noexcept
	Called before the cache is detached from a graph registry.

bool	NodeSubtreeGen (const BRepGraph_NodeId theNode, uint32_t &theGen) const noexcept
	Return current SubtreeGen for an active node.

bool	NodeOwnGen (const BRepGraph_NodeId theNode, uint32_t &theGen) const noexcept
	Return current OwnGen for an active node.

bool	RefOwnGen (const BRepGraph_RefId theRef, uint32_t &theGen) const noexcept
	Return current OwnGen for an active reference.

bool	ItemOwnGen (const BRepGraph_ItemId theItem, uint32_t &theGen) const noexcept
	Return current OwnGen for an active graph item.

bool	ResolveActiveRefChild (const BRepGraph_RefId theRef, BRepGraph_NodeId &theNode) const noexcept
	Resolve an active reference to its active child node.

bool	ResolveActiveFaceRef (const BRepGraph_FaceRefId theRef, BRepGraph_FaceId &theFace) const noexcept
	Resolve an active face reference to its active face node.

Detailed Description

Cache for derived edge, wire, and shell properties.

Each query is independent and caches only its own result. Callers request specific values (IsDegenerated, SameParameter, etc.) and the cache computes + stores only what is needed.

Member Function Documentation

◆ Clear()

void BRepGraph_CacheDerivedState::Clear ( )

overridevirtualnoexcept

Clears all cached entries.

Reimplemented from BRepGraph_Cache.

◆ ComputeEdgeProperties()

static bool BRepGraph_CacheDerivedState::ComputeEdgeProperties	(	const BRepGraph &	theGraph,
		BRepGraph_EdgeId	theEdge,
		bool &	theIsDegenerated,
		bool &	theIsClosed )

static

Compute edge-own derived state (Status, IsClosed). SameRange/SameParameter are per-CoEdge - use the per-CoEdge cache directly.

Parameters

[in]	theGraph	source graph
[in]	theEdge	edge definition identifier
[out]	theIsDegenerated	true if edge is degenerate
[out]	theIsClosed	true if edge is closed

Returns: true if computation succeeded

◆ ComputeShellIsClosed()

static bool BRepGraph_CacheDerivedState::ComputeShellIsClosed	(	const BRepGraph &	theGraph,
		BRepGraph_ShellId	theShell )

static

Compute shell closure directly from a BRepGraph without caching.

Parameters

[in]	theGraph	source graph
[in]	theShell	shell definition identifier

Returns: true if the shell is closed

◆ ComputeWireIsClosed()

static bool BRepGraph_CacheDerivedState::ComputeWireIsClosed	(	const BRepGraph &	theGraph,
		BRepGraph_WireId	theWire )

static

Compute wire closure directly from a BRepGraph without caching.

Parameters

[in]	theGraph	source graph
[in]	theWire	wire definition identifier

Returns: true if the wire is closed

◆ CopyFreshTo()

void BRepGraph_CacheDerivedState::CopyFreshTo ( const BRepGraph_CopyRemap & theCopy ) const

overridevirtual

Copy fresh, remappable derived-state entries into the target graph.

Reimplemented from BRepGraph_Cache.

◆ GetID()

static const Standard_GUID & BRepGraph_CacheDerivedState::GetID ( )

static

Returns the unique cache service GUID.

◆ GetWireIsClosed()

bool BRepGraph_CacheDerivedState::GetWireIsClosed	(	BRepGraph_WireId	theWire,
		bool &	theClosed )

Return wire closure, computing and storing a fresh entry.

Parameters

[in]	theWire	wire definition identifier
[out]	theClosed	filled with the fresh derived value

Returns: true if computation succeeded

◆ ID()

const Standard_GUID & BRepGraph_CacheDerivedState::ID ( ) const

overridevirtual

Returns the unique cache service GUID.

Implements BRepGraph_Cache.

◆ IsClosed()

bool BRepGraph_CacheDerivedState::IsClosed ( BRepGraph_EdgeId theEdge )

Test if an edge is closed (start vertex == end vertex). Computes and caches only IsClosed.

Parameters

[in] theEdge edge definition identifier

Returns: true if the edge is closed

◆ IsDegenerated()

bool BRepGraph_CacheDerivedState::IsDegenerated ( BRepGraph_EdgeId theEdge )

Test if an edge is degenerate (no 3D curve and vertex collapse). Computes and caches only Status - does NOT compute SameParameter/SameRange.

Parameters

[in] theEdge edge definition identifier

Returns: true if the edge is degenerate

◆ IsShellClosed()

bool BRepGraph_CacheDerivedState::IsShellClosed ( BRepGraph_ShellId theShell )

Test if a shell is closed.

Parameters

[in] theShell shell definition identifier

Returns: true if the shell is closed

◆ Name()

const TCollection_AsciiString & BRepGraph_CacheDerivedState::Name ( ) const

overridevirtual

Returns the cache service display name.

Implements BRepGraph_Cache.

◆ SameParameter()

bool BRepGraph_CacheDerivedState::SameParameter ( BRepGraph_CoEdgeId theCoEdge )

Test if a single coedge has SameParameter.

Parameters

[in] theCoEdge coedge definition identifier

Returns: true if the coedge has SameParameter

◆ SameRange()

bool BRepGraph_CacheDerivedState::SameRange ( BRepGraph_CoEdgeId theCoEdge )

Test if a single coedge has SameRange.

Parameters

[in] theCoEdge coedge definition identifier

Returns: true if the coedge has SameRange

◆ SetWireIsClosed()

void BRepGraph_CacheDerivedState::SetWireIsClosed	(	BRepGraph_WireId	theWire,
		bool	theClosed )

Store a pre-computed wire closure value.

Parameters

[in]	theWire	wire definition identifier
[in]	theClosed	pre-computed closure value

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

BRepGraph_CacheDerivedState.hxx

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ Clear()

◆ ComputeEdgeProperties()

◆ ComputeShellIsClosed()

◆ ComputeWireIsClosed()

◆ CopyFreshTo()

◆ GetID()

◆ GetWireIsClosed()

◆ ID()

◆ IsClosed()

◆ IsDegenerated()

◆ IsShellClosed()

◆ Name()

◆ SameParameter()

◆ SameRange()

◆ SetWireIsClosed()