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	ChildRef
	Child reference storage entry. More...

struct	CoEdgeCurve2DRep
	2D parametric curve (PCurve) use for coedges. Owned by a single coedge. More...

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

struct	CoEdgePolygon2DRep
	2D polygon-on-surface use for coedges. Owned by a single coedge. More...

struct	CoEdgePolygonOnTriRep
	Polygon-on-triangulation use for coedges. Owned by a single coedge. More...

struct	CompoundDef
	Compound entity. More...

struct	CompoundRelations
	Topology relations for compound definitions. More...

struct	CompSolidDef
	Comp-solid entity. More...

struct	CompSolidRelations
	Topology relations for compsolid definitions. More...

struct	EdgeCurve3DRep
	3D curve use for edges. Owned by a single edge. More...

struct	EdgeDef
	Edge entity: parameter range, boundary vertices. Geometry (curve, polygon) accessed via owned use records. Degeneracy, closure, SameRange, and SameParameter are derived from current topology and geometry via BRepGraph_CacheDerivedState. More...

struct	EdgePolygon3DRep
	3D polygon use for edges. Owned by a single edge. More...

struct	EdgeRelations
	Topology relations for edge definitions. More...

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

struct	FaceRef
	Face reference storage entry. More...

struct	FaceRelations
	Topology relations for face definitions. More...

struct	FaceSurfaceRep
	Surface geometry use for faces. Owned by a single face. More...

struct	FaceTriangulationRep
	Triangulation mesh use for faces. Owned by a single face. More...

struct	Instance
	Unified instance container template. More...

struct	OccurrenceDef
	Occurrence entity: reference to a child node (topology root or product). Parent products are determined from ProductRelations owner arrays. Placement lives on OccurrenceRef::LocalLocation (definitions never carry location). Path-based traversal (BRepGraph_UsagePath) 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	OccurrenceRelations
	Topology relations for occurrence definitions. More...

struct	ParityOrientation
	Persisted core-topology orientation stored as forward/reversed parity only. More...

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

struct	ProductRelations
	Topology relations for product definitions. More...

struct	ShellDef
	Shell entity. Shell closure is derived from face-boundary edge incidence via BRepGraph_CacheDerivedState. More...

struct	ShellRef
	Shell reference storage entry. More...

struct	ShellRelations
	Topology relations for shell definitions. More...

struct	SolidDef
	Solid entity. More...

struct	SolidRef
	Solid reference storage entry. More...

struct	SolidRelations
	Topology relations for solid definitions. More...

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

struct	VertexRef
	Vertex reference storage entry. More...

struct	VertexRelations
	Topology relations for vertex definitions. More...

struct	WireDef
	Wire entity: ordered coedge sequence. Wire closure is derived from the ordered coedge chain via BRepGraph_CacheDerivedState. More...

struct	WireRef
	Wire reference storage entry. More...

struct	WireRelations
	Topology relations for wire definitions. More...

Typedefs
using	VertexInstance = Instance<BRepGraph_VertexId>

using	CoEdgeInstance = Instance<BRepGraph_CoEdgeId>

using	WireInstance = Instance<BRepGraph_WireId>

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.

Detailed Description

Definition structs for the incidence-table topology model.

Geometry representation records for the BRepGraph incidence storage.

Centralized topology relation representations for BRepGraph incidence storage.

Managed reference entry structs for the incidence-table storage.

Each definition holds intrinsic geometry properties. Ordered child incidence lives in BRepGraphInc_Relations and reusable parent/child usage edges live in reference records.

Each reference entry extends BaseRef with representation fields describing how a child definition is used by its parent. 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:

CoEdge usage is stored directly on CoEdgeDef and ordered through WireRelations
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).

Relation structs hold ordered child-use lists and incoming incidence indexes outside definition records. Definitions stay focused on intrinsic geometry and flags; reusable child/parent edges live in reference records or coedge use records.

Curve parameter ranges live in curve-use records because the use record is not reusable - the interval belongs to the owning edge/coedge curve use, not to a shared geometric curve.

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.