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164 lines
5.2 KiB
C++
164 lines
5.2 KiB
C++
// Created on: 1991-02-20
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// Created by: Jacques GOUSSARD
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// Copyright (c) 1991-1999 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 _IntAna2d_AnaIntersection_HeaderFile
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#define _IntAna2d_AnaIntersection_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 <Standard_Boolean.hxx>
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#include <Standard_Integer.hxx>
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#include <IntAna2d_IntPoint.hxx>
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class StdFail_NotDone;
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class Standard_OutOfRange;
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class gp_Lin2d;
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class gp_Circ2d;
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class IntAna2d_Conic;
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class gp_Elips2d;
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class gp_Parab2d;
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class gp_Hypr2d;
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class IntAna2d_IntPoint;
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//! Implementation of the analytical intersection between:
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//! - two Lin2d,
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//! - two Circ2d,
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//! - a Lin2d and a Circ2d,
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//! - an element of gp (Lin2d, Circ2d, Elips2d, Parab2d, Hypr2d)
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//! and another conic.
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//! No tolerance is given for all the intersections: the tolerance
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//! will be the "precision machine".
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class IntAna2d_AnaIntersection
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Empty constructor. IsDone returns False.
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Standard_EXPORT IntAna2d_AnaIntersection();
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//! Intersection between two lines.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Lin2d& L1, const gp_Lin2d& L2);
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//! Intersection between two circles.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Circ2d& C1, const gp_Circ2d& C2);
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//! Intersection between a line and a circle.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Lin2d& L, const gp_Circ2d& C);
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//! Intersection between a line and a conic.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Lin2d& L, const IntAna2d_Conic& C);
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//! Intersection between a circle and another conic.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Circ2d& C, const IntAna2d_Conic& Co);
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//! Intersection between an ellipse and another conic.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Elips2d& E, const IntAna2d_Conic& C);
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//! Intersection between a parabola and another conic.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Parab2d& P, const IntAna2d_Conic& C);
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//! Intersection between an hyperbola and another conic.
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Standard_EXPORT IntAna2d_AnaIntersection(const gp_Hypr2d& H, const IntAna2d_Conic& C);
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//! Intersection between two lines.
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Standard_EXPORT void Perform (const gp_Lin2d& L1, const gp_Lin2d& L2);
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//! Intersection between two circles.
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Standard_EXPORT void Perform (const gp_Circ2d& C1, const gp_Circ2d& C2);
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//! Intersection between a line and a circle.
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Standard_EXPORT void Perform (const gp_Lin2d& L, const gp_Circ2d& C);
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//! Intersection between a line and a conic.
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Standard_EXPORT void Perform (const gp_Lin2d& L, const IntAna2d_Conic& C);
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//! Intersection between a circle and another conic.
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Standard_EXPORT void Perform (const gp_Circ2d& C, const IntAna2d_Conic& Co);
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//! Intersection between an ellipse and another conic.
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Standard_EXPORT void Perform (const gp_Elips2d& E, const IntAna2d_Conic& C);
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//! Intersection between a parabola and another conic.
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Standard_EXPORT void Perform (const gp_Parab2d& P, const IntAna2d_Conic& C);
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//! Intersection between an hyperbola and another conic.
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Standard_EXPORT void Perform (const gp_Hypr2d& H, const IntAna2d_Conic& C);
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//! Returns TRUE if the computation was successful.
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Standard_Boolean IsDone() const;
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//! Returns TRUE when there is no intersection, i-e
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//! - no intersection point
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//! - the elements are not identical.
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//! The element may be parallel in this case.
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Standard_Boolean IsEmpty() const;
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//! For the intersection between an element of gp and a conic
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//! known by an implicit equation, the result will be TRUE
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//! if the element of gp verifies the implicit equation.
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//! For the intersection between two Lin2d or two Circ2d, the
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//! result will be TRUE if the elements are identical.
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//! The function returns FALSE in all the other cases.
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Standard_Boolean IdenticalElements() const;
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//! For the intersection between two Lin2d or two Circ2d,
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//! the function returns TRUE if the elements are parallel.
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//! The function returns FALSE in all the other cases.
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Standard_Boolean ParallelElements() const;
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//! returns the number of IntPoint between the 2 curves.
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Standard_Integer NbPoints() const;
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//! returns the intersection point of range N;
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//! If (N<=0) or (N>NbPoints), an exception is raised.
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const IntAna2d_IntPoint& Point (const Standard_Integer N) const;
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protected:
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private:
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Standard_Boolean done;
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Standard_Boolean para;
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Standard_Boolean iden;
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Standard_Boolean empt;
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Standard_Integer nbp;
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IntAna2d_IntPoint lpnt[4];
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};
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#include <IntAna2d_AnaIntersection.lxx>
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#endif // _IntAna2d_AnaIntersection_HeaderFile
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