0030675: Visualization - remove redundant proxy classes in hierarchy of PrsMgr_Presen...
[occt.git] / src / AdvApprox / AdvApprox_PrefAndRec.cxx
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b311480e 1// Created on: 1996-11-14
2// Created by: Philippe MANGIN
3// Copyright (c) 1996-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 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
973c2be1 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.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
7fd59977 16
7fd59977 17
42cf5bc1 18#include <AdvApprox_PrefAndRec.hxx>
7fd59977 19#include <Precision.hxx>
20#include <Standard_DomainError.hxx>
21
7fd59977 22AdvApprox_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;
9775fa61 31 if (myWeight <= 1) { throw Standard_DomainError("PrefAndRec : Weight is too small");}
7fd59977 32}
33
34Standard_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
43 cut = mil;
44
45// Recheche d'une decoupe preferentiel
46 dist = Abs( (a*myWeight+b)/(1+myWeight) - mil ) ;
47 for ( i=1; i<=myPrefCutting.Length(); i++) {
48 if ( dist > Abs(mil-myPrefCutting.Value(i))) {
49 cut = myPrefCutting.Value(i);
50 dist = Abs(mil-cut);
51 }
52 }
53
54// Recheche d'une decoupe recommende
55 dist = Abs((a-b)/2);
56 for ( i=1; i<=myRecCutting.Length(); i++) {
57 if ((dist-lgmin) > Abs(mil-myRecCutting.Value(i))) {
58 cut = myRecCutting.Value(i);
59 dist = Abs(mil-cut);
60 }
61 }
62
63// Resultat
64 cuttingvalue = cut;
65 return (Abs(cut-a)>=lgmin && Abs(b-cut)>=lgmin);
66}