| 1 | // Created on: 1996-11-14 |
| 2 | // Created by: Philippe MANGIN |
| 3 | // Copyright (c) 1996-1999 Matra Datavision |
| 4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
| 5 | // |
| 6 | // This file is part of Open CASCADE Technology software library. |
| 7 | // |
| 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 |
| 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. |
| 13 | // |
| 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
| 16 | |
| 17 | |
| 18 | #include <AdvApprox_PrefAndRec.hxx> |
| 19 | #include <Precision.hxx> |
| 20 | #include <Standard_DomainError.hxx> |
| 21 | |
| 22 | AdvApprox_PrefAndRec::AdvApprox_PrefAndRec(const TColStd_Array1OfReal& RecCut, |
| 23 | const TColStd_Array1OfReal& PrefCut, |
| 24 | const Standard_Real Weight): |
| 25 | myRecCutting(1, RecCut.Length()), |
| 26 | myPrefCutting(1, PrefCut.Length()), |
| 27 | myWeight(Weight) |
| 28 | { |
| 29 | myRecCutting = RecCut; |
| 30 | myPrefCutting = PrefCut; |
| 31 | if (myWeight <= 1) { throw Standard_DomainError("PrefAndRec : Weight is too small");} |
| 32 | } |
| 33 | |
| 34 | Standard_Boolean AdvApprox_PrefAndRec::Value(const Standard_Real a, |
| 35 | const Standard_Real b, |
| 36 | Standard_Real& cuttingvalue) const |
| 37 | { |
| 38 | // longueur minimum d'un intervalle parametrique : 10*PConfusion() |
| 39 | Standard_Real lgmin = 10 * Precision::PConfusion(); |
| 40 | Standard_Integer i; |
| 41 | Standard_Real cut, mil=(a+b)/2, dist; |
| 42 | Standard_Boolean isfound = Standard_False; |
| 43 | |
| 44 | cut = mil; |
| 45 | |
| 46 | // Recheche d'une decoupe preferentiel |
| 47 | dist = Abs( (a*myWeight+b)/(1+myWeight) - mil ) ; |
| 48 | for ( i=1; i<=myPrefCutting.Length(); i++) { |
| 49 | if ( dist > Abs(mil-myPrefCutting.Value(i))) { |
| 50 | cut = myPrefCutting.Value(i); |
| 51 | dist = Abs(mil-cut); |
| 52 | isfound = Standard_True; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | // Recheche d'une decoupe recommende |
| 57 | if (!isfound) |
| 58 | { |
| 59 | dist = Abs((a-b)/2); |
| 60 | for ( i=1; i<=myRecCutting.Length(); i++) { |
| 61 | if ((dist-lgmin) > Abs(mil-myRecCutting.Value(i))) { |
| 62 | cut = myRecCutting.Value(i); |
| 63 | dist = Abs(mil-cut); |
| 64 | } |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | // Resultat |
| 69 | cuttingvalue = cut; |
| 70 | return (Abs(cut-a)>=lgmin && Abs(b-cut)>=lgmin); |
| 71 | } |