BRepAdaptor — OpenCascade.js

OCCT package BRepAdaptor: BRepAdaptor_CompCurve, BRepAdaptor_Curve, BRepAdaptor_Curve2d, BRepAdaptor_Surface.

BRepAdaptor_CompCurve

The Curve from BRepAdaptor allows to use a Wire of the BRep topology like a 3D curve. Warning: With this class of curve, C0 and C1 continuities are not assumed. So be careful with some algorithm! Please note that BRepAdaptor_CompCurve cannot be periodic curve at all (even if it contains single periodic edge).
BRepAdaptor_CompCurve can only work on valid wires where all edges are connected to each other to make a chain.

Constructors(3)

constructor(): BRepAdaptor_CompCurve
Creates an undefined Curve with no Wire loaded.
constructor(W: TopoDS_Wire, KnotByCurvilinearAbcissa?: boolean): BRepAdaptor_CompCurve
Parameters (2)
- W
- KnotByCurvilinearAbcissa
constructor(W: TopoDS_Wire, KnotByCurvilinearAbcissa: boolean, First: number, Last: number, Tol: number): BRepAdaptor_CompCurve
Creates a Curve to access the geometry of edge <W>.
Parameters (5)
- W
- KnotByCurvilinearAbcissa
- First
- Last
- Tol

Static methods(2)

get_type_name(): string
get_type_descriptor(): Standard_Type

Instance methods(33)

DynamicType(): Standard_Type
ShallowCopy(): Adaptor3d_Curve
Shallow copy of adaptor.
Initialize(W: TopoDS_Wire, KnotByCurvilinearAbcissa: boolean): void
Sets the wire <W>.
Parameters (2)
- W
- KnotByCurvilinearAbcissa
Initialize(W: TopoDS_Wire, KnotByCurvilinearAbcissa: boolean, First: number, Last: number, Tol: number): void
Sets wire <W> and trimmed parameter.
Parameters (5)
- W
- KnotByCurvilinearAbcissa
- First
- Last
- Tol
Wire(): TopoDS_Wire
Returns the wire.
Edge(U: number, E: TopoDS_Edge, UonE: number): { UonE: number }
returns an edge and one parameter on them corresponding to the parameter U.
Parameters (3)
- U
- E —
  Mutated in place; read the updated value from this argument after the call.
- UonE
Returns
A result object with fields:
- UonE: updated value from the call.
FirstParameter(): number
LastParameter(): number
Continuity(): GeomAbs_Shape
NbIntervals(S: GeomAbs_Shape): number
Returns the number of intervals for continuity . May be one if Continuity(me) >= .
Parameters (1)
- S
Intervals(T: NCollection_Array1_double, S: GeomAbs_Shape): void
Stores in <T> the parameters bounding the intervals of continuity .
The array must provide enough room to accommodate for the parameters. i.e. T.Length() > NbIntervals()
Parameters (2)
- T —
  Mutated in place; read the updated value from this argument after the call.
- S
Trim(First: number, Last: number, Tol: number): Adaptor3d_Curve
Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last>.
Parameters (3)
- First
- Last
- Tol
IsClosed(): boolean
IsPeriodic(): boolean
Period(): number
EvalD0(theU: number): gp_Pnt
Computes the point of parameter theU on the curve.
Parameters (1)
- theU
EvalD1(theU: number): Geom_Curve_ResD1
Computes the point of parameter theU on the curve with its first derivative. Raised if the continuity of the current interval is not C1.
Parameters (1)
- theU
EvalD2(theU: number): Geom_Curve_ResD2
Returns the point and the first and second derivatives at parameter theU. Raised if the continuity of the current interval is not C2.
Parameters (1)
- theU
EvalD3(theU: number): Geom_Curve_ResD3
Returns the point and the first, second and third derivatives at parameter theU. Raised if the continuity of the current interval is not C3.
Parameters (1)
- theU
EvalDN(theU: number, theN: number): gp_Vec
Returns the derivative of order theN at parameter theU. Raised if the continuity of the current interval is not CN. Raised if theN < 1.
Parameters (2)
- theU
- theN
Resolution(R3d: number): number
returns the parametric resolution
Parameters (1)
- R3d
GetType(): GeomAbs_CurveType
Returns the type of the curve in the current interval: Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve.
Line(): gp_Lin
Circle(): gp_Circ
Ellipse(): gp_Elips
Hyperbola(): gp_Hypr
Parabola(): gp_Parab
Degree(): number
IsRational(): boolean
NbPoles(): number
NbKnots(): number
Bezier(): Geom_BezierCurve
BSpline(): Geom_BSplineCurve

BRepAdaptor_Curve

GeomAdaptor_TransformedCurveAdaptor3d_CurveStandard_Transient

The Curve from BRepAdaptor allows to use an Edge of the BRep topology like a 3D curve.
It has the methods the class Curve from Adaptor3d.
It is created or Initialized with an Edge. It takes into account local coordinate systems. If the Edge has a 3D curve it is use with priority. If the edge has no 3D curve one of the curves on surface is used. It is possible to enforce using a curve on surface by creating or initialising with an Edge and a Face.

Constructors(3)

constructor(): BRepAdaptor_Curve
Creates an undefined Curve with no Edge loaded.
constructor(E: TopoDS_Edge): BRepAdaptor_Curve
Creates a Curve to access the geometry of edge <E>.
Parameters (1)
- E
constructor(E: TopoDS_Edge, F: TopoDS_Face): BRepAdaptor_Curve
Creates a Curve to access the geometry of edge <E>. The geometry will be computed using the parametric curve of <E> on the face <F>. An Error is raised if the edge does not have a pcurve on the face.
Parameters (2)
- E
- F

Static methods(2)

get_type_name(): string
get_type_descriptor(): Standard_Type

Instance methods(8)

DynamicType(): Standard_Type
ShallowCopy(): Adaptor3d_Curve
Shallow copy of adaptor.
Reset(): void
Reset currently loaded curve (undone Load()).
Initialize(E: TopoDS_Edge): void
Sets the Curve <me> to access the geometry of edge <E>.
Parameters (1)
- E
Initialize(E: TopoDS_Edge, F: TopoDS_Face): void
Sets the Curve <me> to access the geometry of edge <E>. The geometry will be computed using the parametric curve of <E> on the face <F>. An Error is raised if the edge does not have a pcurve on the face.
Parameters (2)
- E
- F
Edge(): TopoDS_Edge
Returns the edge.
Tolerance(): number
Returns the edge tolerance.
Trim(First: number, Last: number, Tol: number): Adaptor3d_Curve
Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion.
Parameters (3)
- First
- Last
- Tol

BRepAdaptor_Curve2d

Geom2dAdaptor_CurveAdaptor2d_Curve2dStandard_Transient

The Curve2d from BRepAdaptor allows to use an Edge on a Face like a 2d curve (curve in the parametric space).
It has the methods of the class Curve2d from Adpator.
It is created or initialized with a Face and an Edge. The methods are inherited from Curve from Geom2dAdaptor.

Constructors(2)

constructor(): BRepAdaptor_Curve2d
Creates an uninitialized curve2d.
constructor(E: TopoDS_Edge, F: TopoDS_Face): BRepAdaptor_Curve2d
Creates with the pcurve of <E> on <F>.
Parameters (2)
- E
- F

Static methods(2)

get_type_name(): string
get_type_descriptor(): Standard_Type

Instance methods(5)

DynamicType(): Standard_Type
ShallowCopy(): Adaptor2d_Curve2d
Shallow copy of adaptor.
Initialize(E: TopoDS_Edge, F: TopoDS_Face): void
Initialize with the pcurve of <E> on <F>.
Parameters (2)
- E
- F
Edge(): TopoDS_Edge
Returns the Edge.
Face(): TopoDS_Face
Returns the Face.

BRepAdaptor_Surface

GeomAdaptor_TransformedSurfaceAdaptor3d_SurfaceStandard_Transient

The Surface from BRepAdaptor allows to use a Face of the BRep topology look like a 3D surface.
It has the methods of the class Surface from Adaptor3d.
It is created or initialized with a Face. It takes into account the local coordinates system.
The u,v parameter range is the minmax value for the restriction, unless the flag restriction is set to false.

Constructors(2)

constructor(): BRepAdaptor_Surface
Creates an undefined surface with no face loaded.
constructor(F: TopoDS_Face, R?: boolean): BRepAdaptor_Surface
Creates a surface to access the geometry of <F>. If <Restriction> is true the parameter range is the parameter range in the UV space of the restriction.
Parameters (2)
- F
- R

Static methods(2)

get_type_name(): string
get_type_descriptor(): Standard_Type

Instance methods(5)

DynamicType(): Standard_Type
ShallowCopy(): Adaptor3d_Surface
Shallow copy of adaptor.
Initialize(F: TopoDS_Face, Restriction?: boolean): void
Sets the surface to the geometry of <F>.
Parameters (2)
- F
- Restriction
Face(): TopoDS_Face
Returns the face.
Tolerance(): number
Returns the face tolerance.