Definition structs for the incidence-table topology model. More...

Data Structures
struct	BaseDef
	Fields shared by every entity. More...

struct	BaseRef
	Fields shared by every reference entry. More...

struct	BaseRep
	Fields shared by every representation entity. More...

struct	ChildRef
	Child reference storage entry. More...

struct	CoEdgeDef
	CoEdge entity: use of an edge on a specific face, owns PCurve data. More...

struct	CoEdgeRef
	CoEdge reference storage entry. No Orientation field: CoEdgeDef::Orientation already owns the edge-on-face sense, coupled with PCurve parametrization, so duplicating orientation here would create a second competing source of truth. More...

struct	CompoundDef
	Compound entity: heterogeneous child references. More...

struct	CompSolidDef
	Comp-solid entity: ordered solid references. More...

struct	Curve2DRep
	2D parametric curve (PCurve) representation for coedges. More...

struct	Curve3DRep
	3D curve geometry representation for edges. More...

struct	EdgeDef
	Edge entity: parameter range, boundary vertices, flags. Geometry (curve, polygon) accessed via rep indices into Storage vectors. More...

struct	FaceDef
	Face entity: surface, triangulations, wires. More...

struct	FaceRef
	Face reference storage entry. More...

struct	Instance
	Unified instance container template. More...

struct	OccurrenceDef
	Occurrence entity: reference to a child node (topology root or product). The parent product is determined from OccurrenceRef::ParentId (BaseRef). Placement lives on OccurrenceRef::LocalLocation (definitions never carry location). Path-based traversal (PathView::ForEachPathTo) resolves DAG paths without stored parent-occurrence pointers. More...

struct	OccurrenceRef
	Occurrence reference storage entry. Like ChildRef but without Orientation - placement is a reference property. Structurally parallel to other ref types: definitions carry no location. More...

struct	Polygon2DRep
	2D polygon-on-surface discretization for coedges. More...

struct	Polygon3DRep
	3D polygon discretization for edges. More...

struct	PolygonOnTriRep
	Polygon-on-triangulation for coedges. Links a polygon to a specific triangulation rep (global index, not face-local). More...

struct	ProductDef
	Product entity: reusable shape definition (part or assembly). Children are managed uniformly via OccurrenceRefIds: More...

struct	ShellDef
	Shell entity: ordered face references with local locations. More...

struct	ShellRef
	Shell reference storage entry. More...

struct	SolidDef
	Solid entity: ordered shell references with local locations. More...

struct	SolidRef
	Solid reference storage entry. More...

struct	SurfaceRep
	Surface geometry representation for faces. More...

struct	TriangulationRep
	Triangulation mesh representation for faces. More...

struct	VertexDef
	Vertex definition: 3D point + tolerance. More...

struct	VertexRef
	Vertex reference storage entry. More...

struct	WireDef
	Wire entity: ordered coedge references with closure flag. More...

struct	WireInstance
	Wire instance with an additional flag indicating whether this is the outer wire. More...

struct	WireRef
	Wire reference storage entry. More...

Typedefs
using	VertexInstance = Instance<BRepGraph_VertexId>

using	CoEdgeInstance = Instance<BRepGraph_CoEdgeId>

using	FaceInstance = Instance<BRepGraph_FaceId>

using	ShellInstance = Instance<BRepGraph_ShellId>

using	SolidInstance = Instance<BRepGraph_SolidId>

using	OccurrenceInstance = Instance<BRepGraph_OccurrenceId>

using	CompoundInstance = Instance<BRepGraph_CompoundId>

using	CompSolidInstance = Instance<BRepGraph_CompSolidId>

using	ProductInstance = Instance<BRepGraph_ProductId>

using	NodeInstance = Instance<BRepGraph_NodeId>
	NodeInstance is Instance<BRepGraph_NodeId>. Returned by BRepGraph_ChildExplorer and BRepGraph_ParentExplorer with accumulated transforms from traversal root to the current node. Implicitly convertible from any typed Instance via BRepGraph_NodeId::Typed implicit conversion to BRepGraph_NodeId.

Functions
template<typename T >
void	InitVec (NCollection_DynamicArray< T > &theVec, const occ::handle< NCollection_BaseAllocator > &theAlloc, const int theBlockSize=4)
	Helper: reinitialize a vector member with the given allocator and block size.

Detailed Description

Definition structs for the incidence-table topology model.

Geometry and mesh representation structs for the incidence-table model.

Managed reference entry structs for the incidence-table storage.

Each definition holds intrinsic geometry properties plus forward-direction children (via RefId indices). The incidence model stores topology as flat vectors of definitions (one per kind) with integer cross-references, enabling cache-friendly traversal and parallel geometry extraction.

Each reference entry extends BaseRef with payload fields describing how a child definition is used by its parent (orientation, location). Reference entries are stored in flat per-kind vectors in BRepGraphInc_Storage and support mutation tracking and soft-removal. Not every definition kind has a dedicated Ref kind by design:

Edge usage is represented by CoEdgeRef -> CoEdgeDef (which then targets EdgeDef)
Compound children use ChildRef (heterogeneous NodeId target)
Product children use OccurrenceRef (placement owned by OccurrenceDef)
CompSolid children use SolidRef

For lightweight read-only projections without lifecycle fields, see BRepGraphInc_Instance.hxx (Instance structs carry only DefId + Orientation + Location).

Each representation struct wraps a single piece of geometry or discretization data (surface, curve, triangulation, polygon) with a typed RepId address and lifecycle tracking fields. Representations are stored in flat per-kind vectors in BRepGraphInc_Storage and referenced from definitions by typed RepId.

Typedef Documentation

◆ CoEdgeInstance

using BRepGraphInc::CoEdgeInstance = Instance<BRepGraph_CoEdgeId>

◆ CompoundInstance

using BRepGraphInc::CompoundInstance = Instance<BRepGraph_CompoundId>

◆ CompSolidInstance

using BRepGraphInc::CompSolidInstance = Instance<BRepGraph_CompSolidId>

◆ FaceInstance

using BRepGraphInc::FaceInstance = Instance<BRepGraph_FaceId>

◆ NodeInstance

using BRepGraphInc::NodeInstance = Instance<BRepGraph_NodeId>

NodeInstance is Instance<BRepGraph_NodeId>. Returned by BRepGraph_ChildExplorer and BRepGraph_ParentExplorer with accumulated transforms from traversal root to the current node. Implicitly convertible from any typed Instance via BRepGraph_NodeId::Typed implicit conversion to BRepGraph_NodeId.

◆ OccurrenceInstance

using BRepGraphInc::OccurrenceInstance = Instance<BRepGraph_OccurrenceId>

◆ ProductInstance

using BRepGraphInc::ProductInstance = Instance<BRepGraph_ProductId>

◆ ShellInstance

using BRepGraphInc::ShellInstance = Instance<BRepGraph_ShellId>

◆ SolidInstance

using BRepGraphInc::SolidInstance = Instance<BRepGraph_SolidId>

◆ VertexInstance

using BRepGraphInc::VertexInstance = Instance<BRepGraph_VertexId>

Function Documentation

◆ InitVec()

template<typename T >

void BRepGraphInc::InitVec	(	NCollection_DynamicArray< T > &	theVec,
		const occ::handle< NCollection_BaseAllocator > &	theAlloc,
		const int	theBlockSize = 4 )

inline

Helper: reinitialize a vector member with the given allocator and block size.

Data Structures

Typedefs

Functions