-- File:	Adaptor2d_Line2d.cdl
-- Created:	Tue May  2 10:15:46 1995
-- Author:	Modelistation
--		<model@fuegox>
---Copyright:	 Matra Datavision 1995



class Line2d from Adaptor2d inherits Curve2d from Adaptor2d

uses 
     Array1OfReal from TColStd,
     Pnt2d        from gp,
     Dir2d        from gp,
     Vec2d        from gp,
     Lin2d        from gp,
     Ax2d         from gp,
     Circ2d       from gp,
     Elips2d      from gp,
     Hypr2d       from gp,
     Parab2d      from gp,
     Shape        from GeomAbs,
     CurveType    from GeomAbs,
     BezierCurve     from Geom2d,
     BSplineCurve    from Geom2d,
     HCurve2d        from Adaptor2d

raises
    
    OutOfRange          from Standard,
    NoSuchObject        from Standard,
    DomainError         from Standard
    
is

    Create returns  Line2d from Adaptor2d;

    Create(P: Pnt2d from gp; 
           D: Dir2d from gp;
           UFirst,ULast: Real from Standard)
    returns  Line2d from Adaptor2d;

    Load(me : in out; L : Lin2d from gp)
    is static;

    Load(me : in out; L : Lin2d from gp;
         UFirst,ULast: Real from Standard)
    is static;

    FirstParameter(me)
    	returns Real from Standard
    	is redefined static;

    LastParameter(me)
    	returns Real from Standard
    	is redefined static;
    
    Continuity(me)
    	returns Shape from GeomAbs
    	is redefined static;
    
    NbIntervals(me; S : Shape from GeomAbs) returns Integer
	---Purpose: If necessary,  breaks the  curve in  intervals  of
	--          continuity  <S>.    And  returns   the number   of
	--          intervals.
    is redefined static;
    
    Intervals(me; 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 HCurve2d from Adaptor2d
	---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 from Standard
    	is redefined static;
     
    IsPeriodic(me)
    	returns Boolean from Standard
	is redefined static;

    Period(me) returns Real
    raises
    	DomainError from Standard -- if the curve is not periodic
    is redefined static;
     
    Value(me; X: Real from Standard)
    	returns Pnt2d from gp
	is redefined static;

    D0(me; X: Real from Standard; P: out Pnt2d from gp)
    	is redefined static;

    D1(me; X: Real from Standard;
                    P: out Pnt2d from gp; V: out Vec2d from gp)
    	is redefined static;

    D2(me; X: Real from Standard;
                    P: out Pnt2d from gp; V1,V2: out Vec2d from gp)
    	is redefined static;

    D3(me; X: Real from Standard;
                    P: out Pnt2d from gp; V1,V2,V3: out Vec2d from gp)
    	is redefined static;

    DN (me; U : Real; N : Integer)
    	returns Vec2d from gp
    	is redefined static;


    Resolution(me; R3d : Real)
    	returns Real from Standard
	is redefined static;

        
    GetType(me)
    	returns CurveType from GeomAbs
    	is redefined static;


     Line(me)
    	returns Lin2d from gp
	is redefined static;

     Circle(me) returns Circ2d from gp
     raises 
    	NoSuchObject from Standard
     is redefined static;
     
     Ellipse(me) returns Elips2d from gp
     raises 
    	NoSuchObject from Standard
     is redefined static;
     
     Hyperbola(me) returns  Hypr2d from gp
     raises 
    	NoSuchObject from Standard
     is redefined static;
     
     Parabola(me) returns Parab2d 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 Geom2d
     raises 
    	NoSuchObject from Standard
     is redefined static;
    
     BSpline(me) returns BSplineCurve from Geom2d
     raises 
    	NoSuchObject from Standard
     is redefined static;

fields

    myUfirst : Real from Standard;
    myUlast  : Real from Standard;
    myAx2d   : Ax2d from gp;

end Line2d;