107 lines
4.6 KiB
C++
107 lines
4.6 KiB
C++
// Created on: 1991-09-03
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// Created by: Laurent PAINNOT
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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 _math_TrigonometricFunctionRoots_HeaderFile
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#define _math_TrigonometricFunctionRoots_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 "TColStd_Array1OfReal.hxx"
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#include "Standard_Boolean.hxx"
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#include "Standard_OStream.hxx"
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//! This class implements the solutions of the equation
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//! a*Cos(x)*Cos(x) + 2*b*Cos(x)*Sin(x) + c*Cos(x) + d*Sin(x) + e
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//! The degree of this equation can be 4, 3 or 2.
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class math_TrigonometricFunctionRoots
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Given coefficients a, b, c, d , e, this constructor
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//! performs the resolution of the equation above.
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//! The solutions must be contained in [InfBound, SupBound].
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//! InfBound and SupBound can be set by default to 0 and 2*PI.
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Standard_EXPORT math_TrigonometricFunctionRoots(const Standard_Real A,
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const Standard_Real B,
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const Standard_Real C,
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const Standard_Real D,
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const Standard_Real E,
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const Standard_Real InfBound,
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const Standard_Real SupBound);
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//! Given the two coefficients d and e, it performs
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//! the resolution of d*sin(x) + e = 0.
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//! The solutions must be contained in [InfBound, SupBound].
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//! InfBound and SupBound can be set by default to 0 and 2*PI.
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Standard_EXPORT math_TrigonometricFunctionRoots(const Standard_Real D,
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const Standard_Real E,
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const Standard_Real InfBound,
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const Standard_Real SupBound);
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//! Given the three coefficients c, d and e, it performs
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//! the resolution of c*Cos(x) + d*sin(x) + e = 0.
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//! The solutions must be contained in [InfBound, SupBound].
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//! InfBound and SupBound can be set by default to 0 and 2*PI.
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Standard_EXPORT math_TrigonometricFunctionRoots(const Standard_Real C,
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const Standard_Real D,
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const Standard_Real E,
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const Standard_Real InfBound,
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const Standard_Real SupBound);
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//! Returns true if the computations are successful, otherwise returns false.
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Standard_Boolean IsDone() const;
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//! Returns true if there is an infinity of roots, otherwise returns false.
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Standard_Boolean InfiniteRoots() const;
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//! Returns the solution of range Index.
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//! An exception is raised if NotDone.
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//! An exception is raised if Index>NbSolutions.
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//! An exception is raised if there is an infinity of solutions.
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Standard_Real Value(const Standard_Integer Index) const;
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//! Returns the number of solutions found.
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//! An exception is raised if NotDone.
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//! An exception is raised if there is an infinity of solutions.
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Standard_Integer NbSolutions() const;
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//! Prints information on the current state of the object.
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Standard_EXPORT void Dump(Standard_OStream& o) const;
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protected:
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//! is used by the constructors above.
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Standard_EXPORT void Perform(const Standard_Real A,
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const Standard_Real B,
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const Standard_Real C,
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const Standard_Real D,
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const Standard_Real E,
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const Standard_Real InfBound,
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const Standard_Real SupBound);
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private:
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Standard_Integer NbSol;
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TColStd_Array1OfReal Sol;
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Standard_Boolean InfiniteStatus;
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Standard_Boolean Done;
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};
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#include "math_TrigonometricFunctionRoots.lxx"
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#endif // _math_TrigonometricFunctionRoots_HeaderFile
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