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90 lines
3.4 KiB
C++
90 lines
3.4 KiB
C++
// Created on: 1992-09-28
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// Created by: Remi GILET
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// Copyright (c) 1992-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _GCE2d_MakeSegment_HeaderFile
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#define _GCE2d_MakeSegment_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <GCE2d_Root.hxx>
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#include <Geom2d_TrimmedCurve.hxx>
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class gp_Pnt2d;
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class gp_Dir2d;
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class gp_Lin2d;
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//! Implements construction algorithms for a line
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//! segment in the plane. The result is a
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//! Geom2d_TrimmedCurve curve.
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//! A MakeSegment object provides a framework for:
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//! - defining the construction of the line segment,
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//! - implementing the construction algorithm, and
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//! - consulting the results. In particular, the Value
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//! function returns the constructed line segment.
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class GCE2d_MakeSegment : public GCE2d_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Make a segment of Line from the 2 points <P1> and <P2>.
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//! Status is "ConfusedPoints" if <P1> and <P2> are confused.
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Standard_EXPORT GCE2d_MakeSegment(const gp_Pnt2d& P1, const gp_Pnt2d& P2);
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//! Make a segment of Line from the point <P1> with
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//! the direction <P> and ended by the projection of
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//! <P2> on the line <P1,V>.
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//! Status is "ConfusedPoints" if <P1> and <P2> are confused.
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Standard_EXPORT GCE2d_MakeSegment(const gp_Pnt2d& P1, const gp_Dir2d& V, const gp_Pnt2d& P2);
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//! Make a segment of Line from the line <Line>
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//! between the two parameters U1 and U2.
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//! Status is "SameParameters" if <U1> is equal <U2>.
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Standard_EXPORT GCE2d_MakeSegment(const gp_Lin2d& Line, const Standard_Real U1, const Standard_Real U2);
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//! Make a segment of Line from the line <Line>
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//! between the point <Point> and the parameter Ulast.
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//! It returns NullObject if <U1> is equal <U2>.
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Standard_EXPORT GCE2d_MakeSegment(const gp_Lin2d& Line, const gp_Pnt2d& Point, const Standard_Real Ulast);
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//! Make a segment of Line from the line <Line>
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//! between the two points <P1> and <P2>.
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//! It returns NullObject if <P1> and <P2> are confused.
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//! Warning
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//! If the points which limit the segment are coincident
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//! for given points or for the projection of given points
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//! on the line which supports the line segment (that is,
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//! when IsDone returns false), the Status function
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//! returns gce_ConfusedPoints. This warning only
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//! concerns the first two constructors.
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Standard_EXPORT GCE2d_MakeSegment(const gp_Lin2d& Line, const gp_Pnt2d& P1, const gp_Pnt2d& P2);
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//! Returns the constructed line segment.
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//! Exceptions StdFail_NotDone if no line segment is constructed.
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Standard_EXPORT const Handle(Geom2d_TrimmedCurve)& Value() const;
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operator const Handle(Geom2d_TrimmedCurve)& () const { return Value(); }
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private:
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Handle(Geom2d_TrimmedCurve) TheSegment;
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};
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#endif // _GCE2d_MakeSegment_HeaderFile
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