-- File:	Approx.cdl
-- Created:	Tue Jan 26 11:16:41 1993
-- Author:	Laurent PAINNOT
--		<lpa@sdsun1>
---Copyright:	 Matra Datavision 1993



package Approx 

     ---Purpose: Tis package provides algorithms approximating a set of
     --          points or curves with the possibility of dividing into
     --          one or many bezier curves.
     --          It also provides an instantiation for approximating
     --          a continous function f(t) into one or many curves. 
     
uses AdvApprox, 
     AppCont, 
     AppParCurves, 
     math, 
     gp,
     GeomAbs,
     Geom,
     Geom2d,
     Adaptor3d,
     Adaptor2d,
     TColStd, 
     TColGeom, 
     TColgp, 
     TCollection,  
     Standard, 
     StdFail


is

enumeration ParametrizationType is
    ChordLength,
    Centripetal,
    IsoParametric
end;    

enumeration Status is
    PointsAdded,
    NoPointsAdded,
    NoApproximation
end;    

    deferred generic class TheLineTool;    ---Template
	---Purpose: This template is different from the one of AppParCurves.
	--          In this case, it is possible to insert new points 
	--          during the approximation with ComputeLine.
    
    
    
---------------------------------------------
---Algorithms for Bezier curves construction:
---------------------------------------------


   generic class ComputeLine, MyGradient;
    ---Purpose: Approximate a MultiLine with a cutting.

   generic class ComputeCLine, MyLeastSquare;
    ---Purpose: Approximate a continous MultiLine with a cutting.
    --          The Tool of the line is the tool from AppCont.


   generic class ComputeCSurface, MySLeastSquare;
    ---Purpose: Approximate a continous Surface with or without cutting.
    --          The tool is the tool of AppCont.   




----------------------------------------------
---Algorithms for BSpline curves construction:
----------------------------------------------


    generic class BSplComputeLine, MyBSplGradient, MyGradientbis;

----------------------------------------------
---Algorithms for BSpline Surface construction:
----------------------------------------------
										   class  SweepApproximation; 
										   deferred  class  SweepFunction;
-----------------------------------------------------------------
--- Transformation of connecting MultiCurves into a MultiBSpCurve
-----------------------------------------------------------------


    class MCurvesToBSpCurve;

------------------------------------------------
---Algorithms  for  PCurve  approximation:
------------------------------------------------
    class  CurveOnSurface;  
    class  Curve3d;     
    class  Curve2d; 
------------------------------------------------
---Algorithms  for  PCurve  approximation:
------------------------------------------------
    class  CurvilinearParameter;  
    class  CurvlinFunc;
--------------------------
--- instantiate classes:
--------------------------

    class SequenceOfHArray1OfReal instantiates Sequence from TCollection
    	    	    	    	    	    (HArray1OfReal from TColStd);


-----------------------------------------------------------------
--- the folowing classes approximate a continous function f(t) in 
--- one or many bezier curves.
-----------------------------------------------------------------

    class FitAndDivide instantiates ComputeCLine from Approx
    	(Function from AppCont, FunctionTool from AppCont);

    class FitAndDivide2d instantiates ComputeCLine from Approx
    	(Function2d from AppCont, FunctionTool2d from AppCont);

    class SameParameter from Approx ;
    ---Purpose: this makes a 3D curve from Adaptor3d and
    --          a curve on surface to check and build a 2D 
    --          BSpline curve that has the same parameterisation
    --          as the 3D curve.
    class Array1OfAdHSurface    instantiates Array1 from TCollection 
    	    	    	    (HSurface  from  Adaptor3d)                      ;
    class HArray1OfAdHSurface  instantiates HArray1 from TCollection
    	    	    	    (HSurface from   Adaptor3d, Array1OfAdHSurface)  ;
    class Array1OfGTrsf2d     instantiates Array1 from TCollection
                            (GTrsf2d  from  gp)                            ;
 
    class HArray1OfGTrsf2d  instantiates HArray1  from TCollection
    	    	    	    (GTrsf2d from  gp, Array1OfGTrsf2d)  ; 
			    
    --    class ApproxPoints from Approx ;
    --    class ApproxPoints  from Approx ;
    ---Purpose:  
    --      this approximates a series of points
    --   Boundary conditions can be given as well
    --   a given parameterisation
    --   
 
end Approx;