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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
// Created on: 1992-08-26
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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 _gce_MakeParab_HeaderFile
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#define _gce_MakeParab_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 <gp_Parab.hxx>
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#include <gce_Root.hxx>
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#include <Standard_Real.hxx>
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class StdFail_NotDone;
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class gp_Ax2;
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class gp_Ax1;
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class gp_Pnt;
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class gp_Parab;
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//! This class implements the following algorithms used to
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//! create Parab from gp.
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//! Defines the parabola in the parameterization range :
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//! ]-infinite, +infinite[
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//! The vertex of the parabola is the "Location" point of the
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//! local coordinate system (axis placement) of the parabola.
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//!
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//! The "XDirection" and the "YDirection" of this system define
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//! the plane of the parabola.
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//!
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//! The "XAxis" of the parabola ("Location", "XDirection") is
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//! the axis of symmetry of the parabola. The Xaxis is oriented
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//! from the vertex of the parabola to the Focus of the parabola.
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//!
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//! The "YAxis" of the parabola ("Location", "YDirection") is
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//! parallel to the directrix of the parabola.
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//!
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//! The equation of the parabola in the local coordinates system is
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//! Y**2 = (2*P) * X
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//! P is the distance between the focus and the directrix of the
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//! parabola (called Parameter).
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//! The focal length F = P/2 is the distance between the vertex
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//! and the focus of the parabola.
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//!
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//! * Creates a parabola with its local coordinate system "A2"
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//! and it's focal length "Focal".
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//! * Create a parabola with its directrix and its focus point.
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class gce_MakeParab : public gce_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! --- Purpose ;
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//! Creates a parabola with its local coordinate system "A2"
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//! and it's focal length "Focal".
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//! The XDirection of A2 defines the axis of symmetry of the
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//! parabola. The YDirection of A2 is parallel to the directrix
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//! of the parabola. The Location point of A2 is the vertex of
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//! the parabola
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//! The status is "NullFocusLength" if Focal < 0.0
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Standard_EXPORT gce_MakeParab(const gp_Ax2& A2, const Standard_Real Focal);
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//! D is the directrix of the parabola and F the focus point.
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//! The symmetry axis (XAxis) of the parabola is normal to the
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//! directrix and pass through the focus point F, but its
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//! location point is the vertex of the parabola.
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//! The YAxis of the parabola is parallel to D and its location
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//! point is the vertex of the parabola. The normal to the plane
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//! of the parabola is the cross product between the XAxis and the
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//! YAxis.
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Standard_EXPORT gce_MakeParab(const gp_Ax1& D, const gp_Pnt& F);
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//! Returns the constructed parabola.
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//! Exceptions StdFail_NotDone if no parabola is constructed.
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Standard_EXPORT const gp_Parab& Value() const;
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Standard_EXPORT const gp_Parab& Operator() const;
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Standard_EXPORT operator gp_Parab() const;
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protected:
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private:
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gp_Parab TheParab;
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};
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#endif // _gce_MakeParab_HeaderFile
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