+++ /dev/null
--- 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,
- HCurve2d from Adaptor2d,
- 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.
-
- Create (Curve: HCurve2d from Adaptor2d;
- 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
-
- Approximate(me: in out;
- theCurve: HCurve2d from Adaptor2d;
- theTol3d: Real;
- theOrder: Shape from GeomAbs;
- theMaxSegments: Integer;
- theMaxDegree: Integer) is private;
- ---Purpose: Converts a curve to B-spline
-
-fields
- myIsDone : Boolean from Standard;
- myHasResult : Boolean from Standard;
- myBSplCurve : BSplineCurve from Geom2d;
- myMaxError : Real from Standard;
-
-end ApproxCurve;