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18d8e3e794
Class MyTrigoFunction is removed from file math_TrigonometricFunctionRoots.cxx. New class math_TrigonometricEquationFunction with the same functionality is created to provide possibilities for individual testing. Expressions for derivatives are corrected. New Draw command "intconcon" for intersection 2d conic curves is created. Test command OCC29289 (file QABugs_20.cxx) is created for individual testing math_TrigonometricEquationFunction. It is used in tests/bugs/modalg_7/bug29289
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
// Created on: 1991-05-13
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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_TrigonometricEquationFunction_HeaderFile
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#define _math_TrigonometricEquationFunction_HeaderFile
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#include <math_FunctionWithDerivative.hxx>
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//! This is function, which corresponds trigonometric equation
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//! a*Cos(x)*Cos(x) + 2*b*Cos(x)*Sin(x) + c*Cos(x) + d*Sin(x) + e = 0
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//! See class math_TrigonometricFunctionRoots
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class math_TrigonometricEquationFunction : public math_FunctionWithDerivative
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{
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Standard_Real myAA;
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Standard_Real myBB;
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Standard_Real myCC;
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Standard_Real myDD;
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Standard_Real myEE;
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public:
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math_TrigonometricEquationFunction(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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: myAA(A), myBB(B), myCC(C), myDD(D), myEE(E)
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{
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}
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Standard_Boolean Value(const Standard_Real X, Standard_Real& F) {
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Standard_Real CN = cos(X), SN = sin(X);
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//-- F= AA*CN*CN+2*BB*CN*SN+CC*CN+DD*SN+EE;
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F = CN*(myAA*CN + (myBB + myBB)*SN + myCC) + myDD*SN + myEE;
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return Standard_True;
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}
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Standard_Boolean Derivative(const Standard_Real X, Standard_Real& D) {
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Standard_Real CN = Cos(X), SN = Sin(X);
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//-- D = -2*AA*CN*SN+2*BB*(CN*CN-SN*SN)-CC*SN+DD*CN;
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D = -myAA*CN*SN + myBB*(CN*CN - SN*SN);
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D += D;
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D += -myCC*SN + myDD*CN;
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return Standard_True;
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}
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Standard_Boolean Values(const Standard_Real X, Standard_Real& F, Standard_Real& D) {
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Standard_Real CN = Cos(X), SN = Sin(X);
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//-- F= AA*CN*CN+2*BB*CN*SN+CC*CN+DD*SN+EE;
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//-- D = -2*AA*CN*SN+2*BB*(CN*CN-SN*SN)-CC*SN+DD*CN;
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Standard_Real AACN = myAA*CN;
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Standard_Real BBSN = myBB*SN;
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F = AACN*CN + BBSN*(CN + CN) + myCC*CN + myDD*SN + myEE;
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D = -AACN*SN + myBB*(CN*CN - SN*SN);
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D += D;
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D += -myCC*SN + myDD*CN;
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return Standard_True;
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}
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};
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#endif // _math_TrigonometricEquationFunction_HeaderFile
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