include/opencascade/GeomBndLib_BSplineCurve2d.hxx

0001 // Copyright (c) 2025 OPEN CASCADE SAS
0002 //
0003 // This file is part of Open CASCADE Technology software library.
0004 //
0005 // This library is free software; you can redistribute it and/or modify it under
0006 // the terms of the GNU Lesser General Public License version 2.1 as published
0007 // by the Free Software Foundation, with special exception defined in the file
0008 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0009 // distribution for complete text of the license and disclaimer of any warranty.
0010 //
0011 // Alternatively, this file may be used under the terms of Open CASCADE
0012 // commercial license or contractual agreement.
0013
0014 #ifndef GeomBndLib_BSplineCurve2d_HeaderFile
0015 #define GeomBndLib_BSplineCurve2d_HeaderFile
0016
0017 #include <Bnd_Box2d.hxx>
0018 #include <Geom2d_BSplineCurve.hxx>
0019 #include <Standard.hxx>
0020 #include <Standard_DefineAlloc.hxx>
0021
0022 //! Computes bounding box for a 2D BSpline curve (Geom2d_BSplineCurve).
0023 //! Uses poles convex hull with knot-based index selection + sampling.
0024 class GeomBndLib_BSplineCurve2d
0025 {
0026 public:
0027   DEFINE_STANDARD_ALLOC
0028
0029   GeomBndLib_BSplineCurve2d(const occ::handle<Geom2d_BSplineCurve>& theCurve)
0030       : myGeom(theCurve)
0031   {
0032   }
0033
0034   GeomBndLib_BSplineCurve2d(const GeomBndLib_BSplineCurve2d&)            = delete;
0035   GeomBndLib_BSplineCurve2d& operator=(const GeomBndLib_BSplineCurve2d&) = delete;
0036   GeomBndLib_BSplineCurve2d(GeomBndLib_BSplineCurve2d&&)                 = delete;
0037   GeomBndLib_BSplineCurve2d& operator=(GeomBndLib_BSplineCurve2d&&)      = delete;
0038
0039   const occ::handle<Geom2d_BSplineCurve>& Geometry() const { return myGeom; }
0040
0041   //! Compute bounding box for full curve.
0042   [[nodiscard]] Standard_EXPORT Bnd_Box2d Box(double theTol) const;
0043
0044   //! Compute bounding box for arc [theU1, theU2].
0045   [[nodiscard]] Standard_EXPORT Bnd_Box2d Box(double theU1, double theU2, double theTol) const;
0046
0047   //! Compute precise bounding box using numerical optimization.
0048   [[nodiscard]] Standard_EXPORT Bnd_Box2d BoxOptimal(double theU1,
0049                                                      double theU2,
0050                                                      double theTol) const;
0051
0052 private:
0053   occ::handle<Geom2d_BSplineCurve> myGeom;
0054 };
0055
0056 #endif // GeomBndLib_BSplineCurve2d_HeaderFile