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4796758e8d
Copy constructor and assignment operator from handle of derived type is added in handle class. They are enabled only if macro OCC_HANDLE_NOCASTS is defined, and operators of cast of handle to reference to handle to base type are disabled in that case. Useless type casts to handle to base type are removed in GC and GCE2d classes. Code returning reference to handle from function is corrected to return it either by value or as reference to handle of actual type.
87 lines
2.7 KiB
C++
87 lines
2.7 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 _GC_MakeLine_HeaderFile
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#define _GC_MakeLine_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 <GC_Root.hxx>
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#include <Geom_Line.hxx>
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class StdFail_NotDone;
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class gp_Ax1;
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class gp_Lin;
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class gp_Pnt;
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class gp_Dir;
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//! This class implements the following algorithms used
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//! to create a Line from Geom.
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//! * Create a Line parallel to another and passing
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//! through a point.
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//! * Create a Line passing through 2 points.
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//! A MakeLine object provides a framework for:
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//! - defining the construction of the line,
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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.
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class GC_MakeLine : public GC_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Creates a line located in 3D space with the axis placement A1.
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//! The Location of A1 is the origin of the line.
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Standard_EXPORT GC_MakeLine(const gp_Ax1& A1);
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//! Creates a line from a non persistent line from package gp.
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Standard_EXPORT GC_MakeLine(const gp_Lin& L);
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//! P is the origin and V is the direction of the line.
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Standard_EXPORT GC_MakeLine(const gp_Pnt& P, const gp_Dir& V);
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//! Make a Line from Geom <TheLin> parallel to another
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//! Lin <Lin> and passing through a Pnt <Point>.
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Standard_EXPORT GC_MakeLine(const gp_Lin& Lin, const gp_Pnt& Point);
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//! Make a Line from Geom <TheLin> passing through 2
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//! Pnt <P1>,<P2>.
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//! It returns false if <p1> and <P2> are confused.
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//! Warning
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//! If the points P1 and P2 are coincident (that is, when
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//! IsDone returns false), the Status function returns gce_ConfusedPoints.
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Standard_EXPORT GC_MakeLine(const gp_Pnt& P1, const gp_Pnt& P2);
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//! Returns the constructed line.
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//! Exceptions StdFail_NotDone if no line is constructed.
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Standard_EXPORT const Handle(Geom_Line)& Value() const;
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operator const Handle(Geom_Line)& () const { return Value(); }
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private:
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Handle(Geom_Line) TheLine;
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};
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#endif // _GC_MakeLine_HeaderFile
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