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
6 // This file is part of Open CASCADE Technology software library.
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #include <AdvApprox_PrefAndRec.ixx>
19 #include <Precision.hxx>
20 #include <Standard_DomainError.hxx>
23 AdvApprox_PrefAndRec::AdvApprox_PrefAndRec(const TColStd_Array1OfReal& RecCut,
24 const TColStd_Array1OfReal& PrefCut,
25 const Standard_Real Weight):
26 myRecCutting(1, RecCut.Length()),
27 myPrefCutting(1, PrefCut.Length()),
30 myRecCutting = RecCut;
31 myPrefCutting = PrefCut;
32 if (myWeight <= 1) { Standard_DomainError::Raise("PrefAndRec : Weight is too small");}
35 Standard_Boolean AdvApprox_PrefAndRec::Value(const Standard_Real a,
36 const Standard_Real b,
37 Standard_Real& cuttingvalue) const
39 // longueur minimum d'un intervalle parametrique : 10*PConfusion()
40 Standard_Real lgmin = 10 * Precision::PConfusion();
42 Standard_Real cut, mil=(a+b)/2, dist;
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);
55 // Recheche d'une decoupe recommende
57 for ( i=1; i<=myRecCutting.Length(); i++) {
58 if ((dist-lgmin) > Abs(mil-myRecCutting.Value(i))) {
59 cut = myRecCutting.Value(i);
66 return (Abs(cut-a)>=lgmin && Abs(b-cut)>=lgmin);