CoEdge (half-edge) parametric curve and polygon accessors. More...

#include <BRepGraph_Tool.hxx>

Static Public Member Functions
static TopAbs_Orientation	Orientation (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the coedge orientation relative to its parent edge.

static bool	IsReversed (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns true if the coedge is REVERSED relative to its parent edge. Convenience shortcut for `Orientation(...) == TopAbs_REVERSED`.

static BRepGraph_EdgeId	EdgeOf (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the parent edge definition id this coedge uses.

static BRepGraph_FaceId	FaceOf (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the owning face definition id for this coedge.

static BRepGraph_CoEdgeId	SeamPair (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the seam-pair coedge for closed/seam edges.

static bool	IsSeam (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns true if this coedge is one half of a seam pair.

static bool	HasPCurve (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns true if the coedge has a PCurve representation.

static const occ::handle< Geom2d_Curve > &	PCurve (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the raw PCurve handle by coedge identifier (no Location - UV space).

static const occ::handle< Geom2d_Curve > &	PCurve (const BRepGraph &theGraph, const CoEdgeDef &theCoEdge)
	Returns the raw PCurve handle from a CoEdgeDef (no Location - UV space).

static Geom2dAdaptor_Curve	PCurveAdaptor (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns a PCurve adaptor by coedge identifier. If the coedge has a stored PCurve (Curve2DRepIdx >= 0), returns it directly. Otherwise, for planar face surfaces, computes the PCurve on-the-fly by projecting the edge's 3D curve onto the plane (CurveOnPlane), mirroring the behavior of BRep_Tool::CurveOnSurface for planar faces without stored PCurves.

static Geom2dAdaptor_Curve	PCurveAdaptor (const BRepGraph &theGraph, const CoEdgeUsage &theRef)
	Returns a PCurve adaptor from a CoEdgeUsage.

static std::pair< gp_Pnt2d, gp_Pnt2d >	UVPoints (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the UV endpoints from a CoEdge as (UV1, UV2).

static std::pair< double, double >	Range (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the PCurve parameter range as (first, last).

static bool	HasPolygonOnSurface (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns true if the coedge has a polygon-on-surface representation.

static const occ::handle< Poly_Polygon2D > &	PolygonOnSurface (const BRepGraph &theGraph, const BRepGraph_CoEdgeId theCoEdge)
	Returns the polygon-on-surface (2D) for the coedge.

Detailed Description

CoEdge (half-edge) parametric curve and polygon accessors.

Provides PCurve retrieval, adaptor construction, UV endpoint access, parameter range queries, and polygon-on-surface access for coedge definitions.

Member Function Documentation

◆ EdgeOf()

static BRepGraph_EdgeId BRepGraph_Tool::CoEdge::EdgeOf	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the parent edge definition id this coedge uses.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: parent edge id (invalid for removed coedges)

◆ FaceOf()

static BRepGraph_FaceId BRepGraph_Tool::CoEdge::FaceOf	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the owning face definition id for this coedge.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: owning face id (invalid for free-wire coedges)

◆ HasPCurve()

static bool BRepGraph_Tool::CoEdge::HasPCurve	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns true if the coedge has a PCurve representation.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: true if PCurve exists

◆ HasPolygonOnSurface()

static bool BRepGraph_Tool::CoEdge::HasPolygonOnSurface	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns true if the coedge has a polygon-on-surface representation.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: true if polygon exists

◆ IsReversed()

static bool BRepGraph_Tool::CoEdge::IsReversed	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns true if the coedge is REVERSED relative to its parent edge. Convenience shortcut for Orientation(...) == TopAbs_REVERSED.

◆ IsSeam()

static bool BRepGraph_Tool::CoEdge::IsSeam	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns true if this coedge is one half of a seam pair.

◆ Orientation()

static TopAbs_Orientation BRepGraph_Tool::CoEdge::Orientation	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the coedge orientation relative to its parent edge.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: orientation enum

◆ PCurve() [1/2]

static const occ::handle< Geom2d_Curve > & BRepGraph_Tool::CoEdge::PCurve	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the raw PCurve handle by coedge identifier (no Location - UV space).

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: curve handle, or null handle if no PCurve

◆ PCurve() [2/2]

static const occ::handle< Geom2d_Curve > & BRepGraph_Tool::CoEdge::PCurve	(	const BRepGraph &	theGraph,
		const CoEdgeDef &	theCoEdge )

static

Returns the raw PCurve handle from a CoEdgeDef (no Location - UV space).

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	coedge entity reference

Returns: curve handle, or null handle if no PCurve

◆ PCurveAdaptor() [1/2]

static Geom2dAdaptor_Curve BRepGraph_Tool::CoEdge::PCurveAdaptor	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns a PCurve adaptor by coedge identifier. If the coedge has a stored PCurve (Curve2DRepIdx >= 0), returns it directly. Otherwise, for planar face surfaces, computes the PCurve on-the-fly by projecting the edge's 3D curve onto the plane (CurveOnPlane), mirroring the behavior of BRep_Tool::CurveOnSurface for planar faces without stored PCurves.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: 2D curve adaptor, or empty adaptor if no PCurve and surface is not planar

◆ PCurveAdaptor() [2/2]

static Geom2dAdaptor_Curve BRepGraph_Tool::CoEdge::PCurveAdaptor	(	const BRepGraph &	theGraph,
		const CoEdgeUsage &	theRef )

static

Returns a PCurve adaptor from a CoEdgeUsage.

Parameters

[in]	theGraph	source graph
[in]	theRef	coedge incidence reference

Returns: 2D curve adaptor

◆ PolygonOnSurface()

static const occ::handle< Poly_Polygon2D > & BRepGraph_Tool::CoEdge::PolygonOnSurface	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the polygon-on-surface (2D) for the coedge.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: polygon handle, or null handle if no polygon

◆ Range()

static std::pair< double, double > BRepGraph_Tool::CoEdge::Range	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the PCurve parameter range as (first, last).

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: pair of (first, last) parameters

◆ SeamPair()

static BRepGraph_CoEdgeId BRepGraph_Tool::CoEdge::SeamPair	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the seam-pair coedge for closed/seam edges.

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: paired coedge id, or invalid if this coedge is not a seam half

◆ UVPoints()

static std::pair< gp_Pnt2d, gp_Pnt2d > BRepGraph_Tool::CoEdge::UVPoints	(	const BRepGraph &	theGraph,
		const BRepGraph_CoEdgeId	theCoEdge )

static

Returns the UV endpoints from a CoEdge as (UV1, UV2).

Parameters

[in]	theGraph	source graph
[in]	theCoEdge	typed coedge definition identifier

Returns: pair of 2D points at parameter first and last

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

BRepGraph_Tool.hxx

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ EdgeOf()

◆ FaceOf()

◆ HasPCurve()

◆ HasPolygonOnSurface()

◆ IsReversed()

◆ IsSeam()

◆ Orientation()

◆ PCurve() [1/2]

◆ PCurve() [2/2]

◆ PCurveAdaptor() [1/2]

◆ PCurveAdaptor() [2/2]

◆ PolygonOnSurface()

◆ Range()

◆ SeamPair()

◆ UVPoints()