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-- File: BRepAdaptor_CompCurve.cdl
-- Created: Thu Aug 20 10:53:03 1998
-- Author: Philippe MANGIN
-- <pmn@sgi29>
---Copyright: Matra Datavision 1998
class CompCurve from BRepAdaptor
inherits Curve from Adaptor3d
---Purpose: 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 carful with some algorithm!
uses
Wire from TopoDS,
Edge from TopoDS,
CurveType from GeomAbs,
Shape from GeomAbs,
HCurve from Adaptor3d,
HArray1OfCurve from BRepAdaptor,
BezierCurve from Geom,
BSplineCurve from Geom,
Array1OfReal from TColStd,
HArray1OfReal from TColStd,
Pnt from gp,
Vec from gp,
Circ from gp,
Elips from gp,
Hypr from gp,
Parab from gp,
Lin from gp
raises
NullObject from Standard,
DomainError from Standard,
OutOfRange from Standard,
NoSuchObject from Standard
is
Create returns CompCurve from BRepAdaptor;
---Purpose: Creates an undefined Curve with no Wire loaded.
Create(W : Wire from TopoDS;
KnotByCurvilinearAbcissa : Boolean = Standard_False)
returns CompCurve from BRepAdaptor;
Create(W : Wire from TopoDS;
KnotByCurvilinearAbcissa : Boolean;
First, Last, Tol : Real)
returns CompCurve from BRepAdaptor;
---Purpose: Creates a Curve to acces to the geometry of edge
-- <W>.
--
Initialize(me : in out; W : Wire from TopoDS;
KnotByCurvilinearAbcissa : Boolean)
---Purpose: Sets the wire <W>.
is static;
Initialize(me : in out; W : Wire from TopoDS;
KnotByCurvilinearAbcissa : Boolean;
First, Last, Tol : Real )
---Purpose: Sets wire <W> and trimmed parameter.
is static;
SetPeriodic(me: in out; Periodic : Boolean)
---Purpose: Set the flag Periodic.
-- Warning: This method has no effect if the wire is not closed
is static;
Wire(me) returns Wire from TopoDS
---Purpose: Returns the wire.
--
---C++: return const &
is static;
Edge(me; U : Real;
E : out Edge;
UonE : out Real)
---Purpose: returns an edge and one parameter on them
-- corresponding to the parameter U.
is static;
--
-- Methods of Curve from GeomAdaptor.
--
FirstParameter(me) returns Real
is redefined static;
LastParameter(me) returns Real
is redefined static;
Continuity(me) returns Shape from GeomAbs
is redefined static;
NbIntervals(me: in out; S : Shape from GeomAbs) returns Integer
---Purpose: Returns the number of intervals for continuity
-- <S>. May be one if Continuity(me) >= <S>
is redefined static;
Intervals(me: in out; T : in out Array1OfReal from TColStd;
S : Shape from GeomAbs)
---Purpose: Stores in <T> the parameters bounding the intervals
-- of continuity <S>.
--
-- The array must provide enough room to accomodate
-- for the parameters. i.e. T.Length() > NbIntervals()
raises
OutOfRange from Standard
is redefined static;
Trim(me; First, Last, Tol : Real) returns HCurve from Adaptor3d
---Purpose: Returns a curve equivalent of <me> between
-- parameters <First> and <Last>. <Tol> is used to
-- test for 3d points confusion.
raises
OutOfRange from Standard
---Purpose: If <First> >= <Last>
is redefined static;
IsClosed(me) returns Boolean
is redefined static;
IsPeriodic(me) returns Boolean
is redefined static;
Period(me) returns Real
raises
DomainError from Standard -- if the curve is not periodic
is redefined static;
Value(me; U : Real) returns Pnt from gp
--- Purpose : Computes the point of parameter U on the curve
is redefined static;
D0 (me; U : Real; P : out Pnt from gp)
--- Purpose : Computes the point of parameter U.
is redefined static;
D1 (me; U : Real; P : out Pnt from gp ; V : out Vec from gp)
--- Purpose : Computes the point of parameter U on the curve
-- with its first derivative.
raises
DomainError from Standard
--- Purpose : Raised if the continuity of the current interval
-- is not C1.
is redefined static;
D2 (me; U : Real; P : out Pnt from gp; V1, V2 : out Vec from gp)
--- Purpose :
-- Returns the point P of parameter U, the first and second
-- derivatives V1 and V2.
raises
DomainError from Standard
--- Purpose : Raised if the continuity of the current interval
-- is not C2.
is redefined static;
D3 (me; U : Real; P : out Pnt from gp; V1, V2, V3 : out Vec from gp)
--- Purpose :
-- Returns the point P of parameter U, the first, the second
-- and the third derivative.
raises
DomainError from Standard
--- Purpose : Raised if the continuity of the current interval
-- is not C3.
is redefined static;
DN (me; U : Real; N : Integer) returns Vec from gp
--- Purpose :
-- The returned vector gives the value of the derivative for the
-- order of derivation N.
raises
DomainError from Standard,
--- Purpose : Raised if the continuity of the current interval
-- is not CN.
OutOfRange from Standard
--- Purpose : Raised if N < 1.
is redefined static;
Resolution(me; R3d :Real) returns Real
---Purpose : returns the parametric resolution
is redefined static;
GetType(me) returns CurveType from GeomAbs
is redefined static;
Line(me) returns Lin from gp
raises NoSuchObject from Standard
is redefined static;
Circle(me) returns Circ from gp
raises NoSuchObject from Standard
is redefined static;
Ellipse(me) returns Elips from gp
raises NoSuchObject from Standard
is redefined static;
Hyperbola(me) returns Hypr from gp
raises NoSuchObject from Standard
is redefined static;
Parabola(me) returns Parab from gp
raises NoSuchObject from Standard
is redefined static;
Degree(me) returns Integer
raises NoSuchObject from Standard
is redefined static;
IsRational(me) returns Boolean
raises
NoSuchObject from Standard
is redefined static;
NbPoles(me) returns Integer
raises NoSuchObject from Standard
is redefined static;
NbKnots(me) returns Integer
raises
NoSuchObject from Standard
is redefined static;
Bezier(me) returns BezierCurve from Geom
---Warning :
-- This will make a copy of the Bezier Curve .
-- Be carefull when using this method
raises
NoSuchObject from Standard
is redefined static;
BSpline(me) returns BSplineCurve from Geom
---Warning : This will make a copy of the BSpline Curve. Be
-- carefull when using this method
raises
NoSuchObject from Standard
is redefined static;
Prepare(me; W, D: in out Real; ind : in out Integer)
is private;
InvPrepare(me; ind : Integer; F, D: in out Real)
is private;
fields
myWire : Wire from TopoDS;
TFirst, TLast, PTol, myPeriod : Real;
myCurves : HArray1OfCurve from BRepAdaptor;
myKnots : HArray1OfReal from TColStd;
CurIndex : Integer;
Forward : Boolean;
IsbyAC : Boolean;
Periodic : Boolean;
end CompCurve;
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