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121 lines
4.5 KiB
C++
121 lines
4.5 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_MakeCylindricalSurface_HeaderFile
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#define _GC_MakeCylindricalSurface_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_CylindricalSurface.hxx>
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class gp_Ax2;
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class gp_Cylinder;
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class gp_Pnt;
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class gp_Ax1;
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class gp_Circ;
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//! This class implements the following algorithms used
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//! to create a CylindricalSurface from Geom.
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//! * Create a CylindricalSurface parallel to another and
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//! passing through a point.
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//! * Create a CylindricalSurface parallel to another at a
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//! distance
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//! <Dist>.
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//! * Create a CylindricalSurface passing through 3 points.
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//! * Create a CylindricalSurface by its axis and radius.
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//! * Create a cylindricalSurface by its circular base.
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//! The local coordinate system of the CylindricalSurface is defined
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//! with an axis placement (see class ElementarySurface).
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//!
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//! The "ZAxis" is the symmetry axis of the CylindricalSurface,
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//! it gives the direction of increasing parametric value V.
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//!
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//! The parametrization range is :
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//! U [0, 2*PI], V ]- infinite, + infinite[
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//!
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//! The "XAxis" and the "YAxis" define the placement plane of the
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//! surface (Z = 0, and parametric value V = 0) perpendicular to
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//! the symmetry axis. The "XAxis" defines the origin of the
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//! parameter U = 0. The trigonometric sense gives the positive
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//! orientation for the parameter U.
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class GC_MakeCylindricalSurface : public GC_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! A2 defines the local coordinate system of the cylindrical surface.
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//! The "ZDirection" of A2 defines the direction of the surface's
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//! axis of symmetry.
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//! At the creation the parametrization of the surface is defined
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//! such that the normal Vector (N = D1U ^ D1V) is oriented towards
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//! the "outside region" of the surface.
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//! Warnings :
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//! It is not forbidden to create a cylindrical surface with
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//! Radius = 0.0
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//! Status is "NegativeRadius" if Radius < 0.0
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Standard_EXPORT GC_MakeCylindricalSurface(const gp_Ax2& A2, const Standard_Real Radius);
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//! Creates a CylindricalSurface from a non persistent Cylinder
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//! from package gp.
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Standard_EXPORT GC_MakeCylindricalSurface(const gp_Cylinder& C);
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//! Make a CylindricalSurface from Geom <TheCylinder>
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//! parallel to another
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//! CylindricalSurface <Cylinder> and passing through a
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//! Pnt <Point>.
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Standard_EXPORT GC_MakeCylindricalSurface(const gp_Cylinder& Cyl, const gp_Pnt& Point);
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//! Make a CylindricalSurface from Geom <TheCylinder>
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//! parallel to another
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//! CylindricalSurface <Cylinder> at the distance <Dist>
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//! which can be greater or lower than zero.
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//! The radius of the result is the absolute value of the
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//! radius of <Cyl> plus <Dist>
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Standard_EXPORT GC_MakeCylindricalSurface(const gp_Cylinder& Cyl, const Standard_Real Dist);
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//! Make a CylindricalSurface from Geom <TheCylinder>
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//! passing through 3 Pnt <P1>,<P2>,<P3>.
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//! Its axis is <P1P2> and its radius is the distance
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//! between <P3> and <P1P2>
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Standard_EXPORT GC_MakeCylindricalSurface(const gp_Pnt& P1, const gp_Pnt& P2, const gp_Pnt& P3);
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//! Make a CylindricalSurface by its axis <Axis> and radius
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//! <Radius>.
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Standard_EXPORT GC_MakeCylindricalSurface(const gp_Ax1& Axis, const Standard_Real Radius);
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//! Make a CylindricalSurface by its circular base.
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Standard_EXPORT GC_MakeCylindricalSurface(const gp_Circ& Circ);
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//! Returns the constructed cylinder.
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//! Exceptions StdFail_NotDone if no cylinder is constructed.
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Standard_EXPORT const Handle(Geom_CylindricalSurface)& Value() const;
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operator const Handle(Geom_CylindricalSurface)& () const { return Value(); }
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private:
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Handle(Geom_CylindricalSurface) TheCylinder;
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};
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#endif // _GC_MakeCylindricalSurface_HeaderFile
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