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-- File: Adaptor3d_CurveOnSurface.cdl
-- Created: Mon Feb 22 12:37:00 1993
-- Author: Modelistation
-- <model@sdsun2>
---Copyright: Matra Datavision 1993
class CurveOnSurface from Adaptor3d inherits Curve from Adaptor3d
---Purpose: An interface between the services provided by a curve
-- lying on a surface from the package Geom and those
-- required of the curve by algorithms which use it. The
-- curve is defined as a 2D curve from the Geom2d
-- package, in the parametric space of the surface.
uses
Array1OfReal from TColStd,
Pnt from gp,
Vec from gp,
Circ from gp,
Elips from gp,
Hypr from gp,
Parab from gp,
Lin from gp,
CurveType from GeomAbs,
Shape from GeomAbs,
BezierCurve from Geom,
BSplineCurve from Geom,
BSplineSurface from Geom,
HCurve from Adaptor3d,
HCurve2d from Adaptor2d,
HSurface from Adaptor3d,
HArray1OfReal from TColStd,
Pnt2d from gp,
Vec2d from gp
raises NoSuchObject from Standard,
DomainError from Standard,
OutOfRange from Standard
is
Create returns CurveOnSurface;
Create(S : HSurface from Adaptor3d) returns CurveOnSurface;
Create (C : HCurve2d from Adaptor2d; S : HSurface from Adaptor3d)
returns CurveOnSurface;
---Purpose: Creates a CurveOnSurface from the 2d curve <C> and
-- the surface <S>.
Load(me : in out;S : HSurface from Adaptor3d)
---Purpose: Changes the surface.
is static;
Load(me : in out; C : HCurve2d from Adaptor2d)
---Purpose: Changes the 2d curve.
is static;
GetCurve(me) returns HCurve2d from Adaptor2d
---C++: return const &
is static;
GetSurface(me) returns HSurface from Adaptor3d
---C++: return const &
is static;
ChangeCurve(me : in out) returns HCurve2d from Adaptor2d
---C++: return &
is static;
ChangeSurface(me : in out) returns HSurface from Adaptor3d
---C++: return &
is static;
--
-- Implementation of Curve from Adaptor3d methods
--
--
-- Global methods - Apply to the whole curve.
--
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 on the curve.
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 corresponding
-- to the real space resolution <R3d>.
is redefined static;
GetType(me) returns CurveType from GeomAbs
---Purpose: Returns the type of the curve in the current
-- interval : Line, Circle, Ellipse, Hyperbola,
-- Parabola, BezierCurve, BSplineCurve, OtherCurve.
is redefined static;
--
-- The following methods must be called when GetType returned
-- the corresponding type.
--
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;
---Warning: will raize if this asked on a curve
-- that is not planar
Bezier(me) returns BezierCurve from Geom
raises
NoSuchObject from Standard
is redefined static;
BSpline(me) returns BSplineCurve from Geom
raises
NoSuchObject from Standard
is redefined static;
EvalKPart(me : in out)
is static private;
EvalFirstLastSurf(me : in out)
---Purpose: Evaluates myFirstSurf and myLastSurf
-- for trimming the curve on surface.
is static private;
---Purpose: Following methods output left-bottom and right-top points
-- of located part on surface
-- for trimming the curve on surface.
LocatePart(me; UV : Pnt2d from gp; DUV : Vec2d from gp;
S : HSurface from Adaptor3d;
LeftBot, RightTop : out Pnt2d from gp)
is static private;
LocatePart_RevExt(me; UV : Pnt2d from gp; DUV : Vec2d from gp;
S : HSurface from Adaptor3d;
LeftBot, RightTop : out Pnt2d from gp)
returns Boolean
is static private;
LocatePart_Offset(me; UV : Pnt2d from gp; DUV : Vec2d from gp;
S : HSurface from Adaptor3d;
LeftBot, RightTop : out Pnt2d from gp)
returns Boolean
is static private;
FindBounds(me; Arr : Array1OfReal from TColStd;
XYComp : Real from Standard;
DUVComp : Real from Standard;
Bnd1 : out Integer from Standard;
Bnd2 : out Integer from Standard;
DerIsNull : out Boolean from Standard)
---Purpose: Extracts the numbers of knots which equal
-- the point and checks derivative components
-- by zero equivalence.
is static private;
fields
mySurface : HSurface from Adaptor3d;
myCurve : HCurve2d from Adaptor2d;
myType : CurveType from GeomAbs;
myCirc : Circ from gp;
myLin : Lin from gp;
myFirstSurf : HSurface from Adaptor3d;
myLastSurf : HSurface from Adaptor3d;
myIntervals : HArray1OfReal from TColStd;
myIntCont : Shape from GeomAbs;
end CurveOnSurface;
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