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| const Standard_GUID & | ID () const override |
| | Return this layer type GUID.
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| const EdgeRegularities * | FindEdgeRegularities (const BRepGraph_EdgeId theEdge) const |
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| bool | FindContinuity (const BRepGraph_EdgeId theEdge, const BRepGraph_FaceId theFace1, const BRepGraph_FaceId theFace2, GeomAbs_Shape *const theContinuity=nullptr) const |
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| uint32_t | NbRegularities (const BRepGraph_EdgeId theEdge) const |
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| GeomAbs_Shape | MaxContinuity (const BRepGraph_EdgeId theEdge) const |
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| bool | HasBindings () const |
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| void | SetRegularity (const BRepGraph_EdgeId theEdge, const BRepGraph_FaceId theFace1, const BRepGraph_FaceId theFace2, const GeomAbs_Shape theContinuity) |
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| void | CopyRegularities (const BRepGraph_EdgeId theSourceEdge, const BRepGraph_EdgeId theTargetEdge) |
| | Copy all regularity entries from one edge to another.
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| void | RemoveRegularities (const BRepGraph_EdgeId theEdge) noexcept |
| | Remove all regularity entries bound to the edge.
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| const TCollection_AsciiString & | Name () const override |
| | Layer identity (unique within a graph).
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| void | OnNodeRemoved (const BRepGraph_NodeId theNode, const BRepGraph_NodeId theReplacement) noexcept override |
| | Called when a node is soft-removed.
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| void | OnCompact (const NCollection_DataMap< BRepGraph_NodeId, BRepGraph_NodeId > &theRemapMap) noexcept override |
| | Called after Compact with a unified old->new remap map. Layer must remap all internal NodeId references using this map. The map covers all node kinds (Vertex through CompSolid and future extensions). Nodes absent from the map were removed during compaction - layers should drop data associated with those nodes.
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| void | InvalidateAll () noexcept override |
| | Mark all cached values dirty (bulk invalidation).
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| void | Clear () noexcept override |
| | Clear all stored data.
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| virtual int | SubscribedKinds () const |
| | Return a bitmask of BRepGraph_NodeId::Kind values this layer subscribes to. Only modification events matching subscribed kinds are dispatched. Default: 0 (no subscription - no modification events received). Override to receive OnNodeModified/OnNodesModified callbacks. The returned value must be constant for the lifetime of the layer.
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| virtual void | OnNodeModified (const BRepGraph_NodeId theNode) noexcept |
| | Called in immediate (non-deferred) mode after a single node is modified. Only dispatched if the node's kind matches SubscribedKinds(). Default: no-op.
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| virtual void | OnNodesModified (const NCollection_DynamicArray< BRepGraph_NodeId > &theModifiedNodes) noexcept |
| | Called after EndDeferredInvalidation() with all nodes modified during the deferred scope. Only dispatched if at least one modified node's kind matches SubscribedKinds(). The vector may contain nodes of kinds not subscribed to - layers should filter internally if needed. Default: no-op.
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| virtual int | SubscribedRefKinds () const |
| | Return a bitmask of BRepGraph_RefId::Kind values this layer subscribes to. Only modification events matching subscribed ref kinds are dispatched. Default: 0 (no subscription). Must be constant for the layer's lifetime.
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| virtual void | OnRefRemoved (const BRepGraph_RefId theRef) noexcept |
| | Called when a reference is soft-deleted via RemoveRef(). No replacement concept - refs are simply removed (unlike nodes which can have a replacement during sewing or deduplication). Dispatched to all layers regardless of SubscribedRefKinds(). Default: no-op.
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| virtual void | OnRefModified (const BRepGraph_RefId theRef) noexcept |
| | Called in immediate (non-deferred) mode after a single ref is mutated. Only dispatched if the ref's kind matches SubscribedRefKinds(). Default: no-op.
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| virtual void | OnRefsModified (const NCollection_DynamicArray< BRepGraph_RefId > &theModifiedRefs, const int theModifiedRefKindsMask) noexcept |
| | Called after EndDeferredInvalidation() with all refs modified during the deferred scope. Only dispatched if at least one modified ref's kind matches SubscribedRefKinds(). The vector may contain refs of kinds not subscribed to - layers should filter internally if needed. Default: no-op.
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| uint64_t | Revision () const noexcept |
| | Monotonic revision counter incremented by touch() on every observable state change. Consumers compare stored revisions to detect staleness in O(1). Derived layers MUST call touch() from their mutators.
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| const BRepGraph * | OwningGraph () const noexcept |
| | Owning graph, set by the registry on RegisterLayer() and cleared on Unregister(). Nullptr before registration or after unregistration.
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| BRepGraph * | OwningMutableGraph () const noexcept |
| | Mutable accessor for layers that drive graph mutations (e.g. meshing).
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 Public Member Functions inherited from Standard_Transient |
| | Standard_Transient () |
| | Empty constructor.
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| | Standard_Transient (const Standard_Transient &) |
| | Copy constructor – does nothing.
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| Standard_Transient & | operator= (const Standard_Transient &) |
| | Assignment operator, needed to avoid copying reference counter.
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| virtual | ~Standard_Transient ()=default |
| | Destructor must be virtual.
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| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| | Returns a type descriptor about this object.
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| bool | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| | Returns a true value if this is an instance of Type.
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| bool | IsInstance (const char *const theTypeName) const |
| | Returns a true value if this is an instance of TypeName.
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| 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.
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| 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.
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| 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.
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| int | GetRefCount () const noexcept |
| | Get the reference counter of this object.
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| 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.
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| 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.
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| virtual void | Delete () const |
| | Memory deallocator for transient classes.
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Persistent edge-continuity store, keyed by (edge, F1, F2).
Each entry holds the geometric continuity (C^k / G^k) across the face pair at a given edge. F1 == F2 represents seam continuity across a closed surface's seam line; F1 != F2 represents inter-face regularity. The schema mirrors classical BRep_Tool::Continuity(edge, F1, F2).
Lifetime policy
The layer is persistent metadata: stored values survive arbitrary mutations to the referenced edges and faces. Only the following events discard data:
- OnNodeRemoved(edge|face) - the referenced node is gone; entries naming it are dropped (or migrated when a replacement is provided).
- OnCompact - ids are remapped; entries pointing to removed nodes drop.
- InvalidateAll() / Clear() - explicit caller request. In particular, this layer does NOT subscribe to OnNodeModified: a tolerance bump or NaturalRestriction toggle leaves stored continuity intact. Callers that change the underlying geometry are responsible for refreshing affected entries (typically via SetRegularity, removeRegularity, or InvalidateAll).
1.10.0