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1 | // Created on: 1998-09-22 |
| 2 | // Created by: Philippe MANGIN |
| 3 | // Copyright (c) 1998-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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8 | // This library is free software; you can redistribute it and/or modify it under |
| 9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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10 | // by the Free Software Foundation, with special exception defined in the file |
| 11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 12 | // distribution for complete text of the license and disclaimer of any warranty. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
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16 | |
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17 | |
| 18 | #include <GeomLib_PolyFunc.hxx> |
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19 | #include <math_Vector.hxx> |
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20 | #include <PLib.hxx> |
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21 | |
| 22 | GeomLib_PolyFunc::GeomLib_PolyFunc(const math_Vector& Coeffs) |
| 23 | :myCoeffs(1, Coeffs.Length()-1) |
| 24 | { // On construit le polynome derive |
| 25 | for (Standard_Integer ii=1; ii<=myCoeffs.Length(); ii++) |
| 26 | myCoeffs(ii) = ii*Coeffs(ii+1); |
| 27 | } |
| 28 | |
| 29 | Standard_Boolean GeomLib_PolyFunc::Value(const Standard_Real X, |
| 30 | Standard_Real& F) |
| 31 | { |
| 32 | Standard_Real * coeff = &myCoeffs(1); |
| 33 | Standard_Real * ff = &F; |
| 34 | PLib::EvalPolynomial(X, 0, myCoeffs.Length()-1, 1, coeff[0], ff[0]); |
| 35 | return Standard_True; |
| 36 | } |
| 37 | |
| 38 | Standard_Boolean GeomLib_PolyFunc::Derivative(const Standard_Real X, |
| 39 | Standard_Real& D) |
| 40 | { |
| 41 | Standard_Real * coeff = &myCoeffs(1); |
| 42 | math_Vector Aux(1, 2); |
| 43 | Standard_Real * ff = &Aux(1); |
| 44 | PLib::EvalPolynomial(X, 1, myCoeffs.Length()-1, 1, coeff[0], ff[0]); |
| 45 | D = Aux(2); |
| 46 | return Standard_True; |
| 47 | } |
| 48 | |
| 49 | Standard_Boolean GeomLib_PolyFunc::Values(const Standard_Real X, |
| 50 | Standard_Real& F, |
| 51 | Standard_Real& D) |
| 52 | { |
| 53 | Standard_Real * coeff = &myCoeffs(1); |
| 54 | math_Vector Aux(1, 2); |
| 55 | Standard_Real * ff = &Aux(1); |
| 56 | PLib::EvalPolynomial(X, 1, myCoeffs.Length()-1, 1, coeff[0], ff[0]); |
| 57 | F = Aux(1); |
| 58 | D = Aux(2); |
| 59 | return Standard_True; |
| 60 | } |
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