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OCCT/src/Geom2dConvert/Geom2dConvert_ApproxCurve.cdl
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-- Created on: 1997-09-11
-- Created by: Roman BORISOV
-- Copyright (c) 1997-1999 Matra Datavision
-- Copyright (c) 1999-2014 OPEN CASCADE SAS
--
-- This file is part of Open CASCADE Technology software library.
--
-- This library is free software; you can redistribute it and/or modify it under
-- the terms of the GNU Lesser General Public License version 2.1 as published
-- by the Free Software Foundation, with special exception defined in the file
-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
-- distribution for complete text of the license and disclaimer of any warranty.
--
-- Alternatively, this file may be used under the terms of Open CASCADE
-- commercial license or contractual agreement.
class ApproxCurve from Geom2dConvert
---Purpose: A framework to convert a 2D curve to a BSpline.
-- This is done by approximation within a given tolerance.
uses
Curve from Geom2d,
BSplineCurve from Geom2d,
Shape from GeomAbs,
OutOfRange from Standard
raises OutOfRange from Standard
is
Create (Curve: Curve from Geom2d;
Tol2d: Real;
Order: Shape from GeomAbs;
MaxSegments: Integer;
MaxDegree: Integer) returns ApproxCurve from Geom2dConvert;
---Purpose: Constructs an approximation framework defined by
-- - the 2D conic Curve
-- - the tolerance value Tol2d
-- - the degree of continuity Order
-- - the maximum number of segments allowed MaxSegments
-- - the highest degree MaxDegree which the
-- polynomial defining the BSpline is allowed to have.
Curve(me) returns BSplineCurve from Geom2d;
---Purpose: Returns the 2D BSpline curve resulting from the
-- approximation algorithm.
IsDone(me) returns Boolean from Standard;
---Purpose: returns Standard_True if the approximation has
-- been done with within requiered tolerance
HasResult(me) returns Boolean;
---Purpose: returns Standard_True if the approximation did come out
-- with a result that is not NECESSARELY within the required tolerance
MaxError(me) returns Real from Standard;
---Purpose: Returns the greatest distance between a point on the
-- source conic and the BSpline curve resulting from the
-- approximation. (>0 when an approximation
-- has been done, 0 if no approximation)
Dump(me; o: in out OStream);
---Purpose: Print on the stream o information about the object
fields
myCurve : Curve from Geom2d;
myIsDone : Boolean from Standard;
myHasResult : Boolean from Standard;
myBSplCurve : BSplineCurve from Geom2d;
myMaxError : Real from Standard;
end ApproxCurve;