-- File:	PGeom2d_BSplineCurve.cdl
-- Created:	Tue Apr  6 16:34:20 1993
-- Author:	Philippe DAUTRY
--		<fid@mastox>
-- Copyright:	 Matra Datavision 1993



class BSplineCurve from PGeom2d inherits BoundedCurve from PGeom2d

        ---Purpose :  Definition of  a  B_spline   curve (it can    be
        --         periodic, rational and non uniform : NURBS).
        --         
	---See Also : BSplineCurve from Geom2d.

uses  HArray1OfInteger from PColStd,
      HArray1OfReal    from PColStd,
      HArray1OfPnt2d     from PColgp

is


  Create returns mutable BSplineCurve from PGeom2d;
	---Purpose: Creates a BSplineCurve with default values.
	---Level: Internal 


  Create (
    	    aRational       : Boolean from Standard;
    	    aPeriodic       : Boolean from Standard;
    	    aSpineDegree    : Integer from Standard;
    	    aPoles          : HArray1OfPnt2d from PColgp;
    	    aWeights        : HArray1OfReal from PColStd;
    	    aKnots          : HArray1OfReal from PColStd;
    	    aMultiplicities : HArray1OfInteger from PColStd)
     returns mutable BSplineCurve from PGeom2d;
	---Purpose: Creates a BSplineCurve with these field values.
	---Level: Internal 


  Periodic (me: mutable; aPeriodic: Boolean from Standard);
        ---Purpose :Set the field periodic with <aPeriodic>.
	---Level: Internal 


  Periodic (me) returns Boolean from Standard;
        ---Purpose :Returns the value of the field periodic.
	---Level: Internal 


  Rational (me: mutable; aRational: Boolean from Standard);
        ---Purpose :Set  the   value  of  the    field rational   with
        --         <aRational>.
	---Level: Internal 
    
    
  Rational (me) returns Boolean from Standard;
        ---Purpose :Returns the value of the field rational.
	---Level: Internal 
    
    
  SpineDegree (me: mutable; aSpineDegree: Integer from Standard);
	---Purpose: Set the value of the field spineDegree with <aSpineDegree>.
	---Level: Internal 


  SpineDegree (me)  returns Integer from Standard;
	---Purpose: Returns the value of the field spineDegree.
	---Level: Internal 


  Poles (me: mutable; aPoles: HArray1OfPnt2d from PColgp);
        ---Purpose : Set the value of the field poles with <aPoles>.
	---Level: Internal 


  Poles (me) returns HArray1OfPnt2d from PColgp;
        ---Purpose : Returns the value of the field poles.
	---Level: Internal 


  Weights (me: mutable; aWeights : HArray1OfReal from PColStd);
        ---Purpose : Set the value of the field weights with <aWeights>.
	---Level: Internal 


  Weights (me) returns HArray1OfReal from PColStd;
        ---Purpose : Returns the the value of the field weights.
	---Level: Internal 


  Knots (me: mutable; aKnots : HArray1OfReal);
	---Purpose :  Set the field knots with <aKnots>.
        --  The multiplicity of the knots are not modified.
	---Level: Internal 


  Knots (me) returns HArray1OfReal from PColStd;
        ---Purpose : returns the value of the field knots.
	---Level: Internal 


  Multiplicities (me: mutable; aMultiplicities : HArray1OfInteger);
	---Purpose :  Set the field multiplicities with <aMultiplicities>.
	---Level: Internal 


  Multiplicities (me) returns HArray1OfInteger from PColStd;
        ---Purpose : returns the value of the field multiplicities.
	---Level: Internal 


fields

  rational       : Boolean from Standard;
  periodic       : Boolean from Standard;
  spineDegree    : Integer from Standard;
  poles          : HArray1OfPnt2d from PColgp;
  weights        : HArray1OfReal from PColStd;
  knots          : HArray1OfReal from PColStd;
  multiplicities : HArray1OfInteger from PColStd;

end;