1 // Created on: 1992-09-28
2 // Created by: Remi GILET
3 // Copyright (c) 1992-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _GC_MakeSegment_HeaderFile
18 #define _GC_MakeSegment_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <GC_Root.hxx>
25 #include <Geom_TrimmedCurve.hxx>
27 class StdFail_NotDone;
32 //! Implements construction algorithms for a line
33 //! segment in 3D space.
34 //! Makes a segment of Line from the 2 points <P1> and <P2>.
35 //! The result is a Geom_TrimmedCurve curve.
36 //! A MakeSegment object provides a framework for:
37 //! - defining the construction of the line segment,
38 //! - implementing the construction algorithm, and
39 //! - consulting the results. In particular, the Value
40 //! function returns the constructed line segment.
41 class GC_MakeSegment : public GC_Root
48 //! Make a segment of Line from the 2 points <P1> and <P2>.
49 //! It returns NullObject if <P1> and <P2> are confused.
50 Standard_EXPORT GC_MakeSegment(const gp_Pnt& P1, const gp_Pnt& P2);
52 //! Make a segment of Line from the line <Line1>
53 //! between the two parameters U1 and U2.
54 //! It returns NullObject if <U1> is equal <U2>.
55 Standard_EXPORT GC_MakeSegment(const gp_Lin& Line, const Standard_Real U1, const Standard_Real U2);
57 //! Make a segment of Line from the line <Line1>
58 //! between the point <Point> and the parameter Ulast.
59 //! It returns NullObject if <U1> is equal <U2>.
60 Standard_EXPORT GC_MakeSegment(const gp_Lin& Line, const gp_Pnt& Point, const Standard_Real Ulast);
62 //! Make a segment of Line from the line <Line1>
63 //! between the two points <P1> and <P2>.
64 //! It returns NullObject if <U1> is equal <U2>.
65 Standard_EXPORT GC_MakeSegment(const gp_Lin& Line, const gp_Pnt& P1, const gp_Pnt& P2);
67 //! Returns the constructed line segment.
68 Standard_EXPORT const Handle(Geom_TrimmedCurve)& Value() const;
70 operator const Handle(Geom_TrimmedCurve)& () const { return Value(); }
73 Handle(Geom_TrimmedCurve) TheSegment;
76 #endif // _GC_MakeSegment_HeaderFile