Geom2dAdaptor

this package contains the geometric definition of 2d curves compatible with the Adaptor package templates.

Constructors(1)

constructor(): Geom2dAdaptor

Static methods(1)

MakeCurve(HC: Adaptor2d_Curve2d): Geom2d_Curve
Inherited from GHCurve. Provides a curve handled by reference. Creates a 2d curve from a HCurve2d. This cannot process the OtherCurves.
Parameters (1)
- HC

An interface between the services provided by any curve from the package Geom2d and those required of the curve by algorithms which use it.
Polynomial coefficients of BSpline curves used for their evaluation are cached for better performance. Therefore these evaluations are not thread-safe and parallel evaluations need to be prevented.

Constructors(3)

constructor(): Geom2dAdaptor_Curve
constructor(C: Geom2d_Curve): Geom2dAdaptor_Curve
Parameters (1)
- C
constructor(C: Geom2d_Curve, UFirst: number, ULast: number): Geom2dAdaptor_Curve
Standard_ConstructionError is raised if Ufirst>Ulast.
Parameters (3)
- C
- UFirst
- ULast

Static methods(2)

get_type_name(): string
get_type_descriptor(): Standard_Type

Instance methods(41)

DynamicType(): Standard_Type
ShallowCopy(): Adaptor2d_Curve2d
Shallow copy of adaptor.
Reset(): void
Reset currently loaded curve (undone Load()).
Load(theCurve: Geom2d_Curve): void
Parameters (1)
- theCurve
Load(theCurve: Geom2d_Curve, theUFirst: number, theULast: number): void
Standard_ConstructionError is raised if theUFirst > theULast + Precision::PConfusion().
Parameters (3)
- theCurve
- theUFirst
- theULast
IsInitialized(): boolean
Returns true if the adaptor has been loaded with a curve.
Curve(): Geom2d_Curve
FirstParameter(): number
LastParameter(): number
Continuity(): GeomAbs_Shape
NbIntervals(S: GeomAbs_Shape): number
If necessary, breaks the curve in intervals of continuity . And returns the number of intervals.
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): Adaptor2d_Curve2d
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
Value(U: number): gp_Pnt2d
Computes the point of parameter U on the curve.
Parameters (1)
- U
D0(U: number, P: gp_Pnt2d): void
Computes the point of parameter U.
Parameters (2)
- U
- P —
  Mutated in place; read the updated value from this argument after the call.
D1(U: number, P: gp_Pnt2d, V: gp_Vec2d): void
Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1.
Parameters (3)
- U
- P —
  Mutated in place; read the updated value from this argument after the call.
- V —
  Mutated in place; read the updated value from this argument after the call.
D2(U: number, P: gp_Pnt2d, V1: gp_Vec2d, V2: gp_Vec2d): void
Returns the point P of parameter U, the first and second derivatives V1 and V2. Raised if the continuity of the current interval is not C2.
Parameters (4)
- U
- P —
  Mutated in place; read the updated value from this argument after the call.
- V1 —
  Mutated in place; read the updated value from this argument after the call.
- V2 —
  Mutated in place; read the updated value from this argument after the call.
D3(U: number, P: gp_Pnt2d, V1: gp_Vec2d, V2: gp_Vec2d, V3: gp_Vec2d): void
Returns the point P of parameter U, the first, the second and the third derivative. Raised if the continuity of the current interval is not C3.
Parameters (5)
- U
- P —
  Mutated in place; read the updated value from this argument after the call.
- V1 —
  Mutated in place; read the updated value from this argument after the call.
- V2 —
  Mutated in place; read the updated value from this argument after the call.
- V3 —
  Mutated in place; read the updated value from this argument after the call.
DN(U: number, N: number): gp_Vec2d
The returned vector gives the value of the derivative for the order of derivation N. Raised if the continuity of the current interval is not CN. Raised if N < 1.
Parameters (2)
- U
- N
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_Lin2d
Circle(): gp_Circ2d
Ellipse(): gp_Elips2d
Hyperbola(): gp_Hypr2d
Parabola(): gp_Parab2d
Degree(): number
IsRational(): boolean
NbPoles(): number
NbKnots(): number
NbSamples(): number
Bezier(): Geom2d_BezierCurve
BSpline(): Geom2d_BSplineCurve
EvalD0(theU: number): gp_Pnt2d
Point evaluation. Raises an exception on failure.
Parameters (1)
- theU
EvalD1(theU: number): Geom2d_Curve_ResD1
D1 evaluation. Raises an exception on failure.
Parameters (1)
- theU
EvalD2(theU: number): Geom2d_Curve_ResD2
D2 evaluation. Raises an exception on failure.
Parameters (1)
- theU
EvalD3(theU: number): Geom2d_Curve_ResD3
D3 evaluation. Raises an exception on failure.
Parameters (1)
- theU
EvalDN(theU: number, theN: number): gp_Vec2d
DN evaluation. Raises an exception on failure.
Parameters (2)
- theU
- theN