0030675: Visualization - remove redundant proxy classes in hierarchy of PrsMgr_Presen...
[occt.git] / src / Geom2dConvert / Geom2dConvert_CompCurveToBSplineCurve.cxx
CommitLineData
b311480e 1// Created on: 1997-04-29
2// Created by: Stagiaire Francois DUMONT
3// Copyright (c) 1997-1999 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.
b311480e 16
7fd59977 17
42cf5bc1 18#include <Geom2d_BoundedCurve.hxx>
7fd59977 19#include <Geom2d_BSplineCurve.hxx>
20#include <Geom2dConvert.hxx>
42cf5bc1 21#include <Geom2dConvert_CompCurveToBSplineCurve.hxx>
7fd59977 22#include <gp_Pnt2d.hxx>
42cf5bc1 23#include <gp_Vec2d.hxx>
7fd59977 24#include <Precision.hxx>
42cf5bc1 25#include <TColgp_Array1OfPnt2d.hxx>
26#include <TColStd_Array1OfInteger.hxx>
27#include <TColStd_Array1OfReal.hxx>
7fd59977 28
b514beda 29//=======================================================================
30//function : constructor
31//purpose :
32//=======================================================================
33Geom2dConvert_CompCurveToBSplineCurve::Geom2dConvert_CompCurveToBSplineCurve (const Convert_ParameterisationType theParameterisation)
34: myTol (Precision::Confusion()),
35 myType (theParameterisation)
36{
37 //
38}
7fd59977 39
b514beda 40//=======================================================================
41//function : constructor
42//purpose :
43//=======================================================================
7fd59977 44Geom2dConvert_CompCurveToBSplineCurve::
45Geom2dConvert_CompCurveToBSplineCurve(const Handle(Geom2d_BoundedCurve)& BasisCurve,
46 const Convert_ParameterisationType Parameterisation) :
47 myTol(Precision::Confusion()),
48 myType(Parameterisation)
49{
50 Handle(Geom2d_BSplineCurve) Bs =
51 Handle(Geom2d_BSplineCurve)::DownCast(BasisCurve);
52 if (!Bs.IsNull()) {
53 myCurve = Handle(Geom2d_BSplineCurve)::DownCast(BasisCurve->Copy());
54 }
55 else {
56 myCurve = Geom2dConvert::CurveToBSplineCurve (BasisCurve, myType);
57 }
58}
59
60//=======================================================================
61//function : Add
b514beda 62//purpose :
7fd59977 63//=======================================================================
64
65Standard_Boolean Geom2dConvert_CompCurveToBSplineCurve::
66Add(const Handle(Geom2d_BoundedCurve)& NewCurve,
67 const Standard_Real Tolerance,
68 const Standard_Boolean After)
69{
b514beda 70 // conversion
71 Handle(Geom2d_BSplineCurve) Bs = Handle(Geom2d_BSplineCurve)::DownCast (NewCurve);
72 if (!Bs.IsNull())
73 {
74 Bs = Handle(Geom2d_BSplineCurve)::DownCast (NewCurve->Copy());
7fd59977 75 }
b514beda 76 else
77 {
7fd59977 78 Bs = Geom2dConvert::CurveToBSplineCurve (NewCurve, myType);
79 }
b514beda 80 if (myCurve.IsNull())
81 {
82 myCurve = Bs;
83 return Standard_True;
84 }
85
86 myTol = Tolerance;
7fd59977 87
88 Standard_Integer LBs = Bs->NbPoles(), LCb = myCurve->NbPoles();
89
90 // myCurve est elle fermee ?
2dad173d 91 if (myCurve->Pole(LCb).Distance(myCurve->Pole(1)) < myTol){
7fd59977 92 if(After){
93 // Ajout Apres ?
2dad173d 94 Standard_Real d1 = myCurve->Pole(LCb).Distance(Bs->Pole(1));
95 Standard_Real d2 = myCurve->Pole(LCb).Distance(Bs->Pole(LBs));
96 if (d2 < d1) {
97 Bs->Reverse();
98 d1 = d2;
99 }
100 if (d1 < myTol) {
7fd59977 101 Add(myCurve, Bs, Standard_True);
102 return Standard_True;
103 }
104 }
105 else{
106 // Ajout avant ?
2dad173d 107 Standard_Real d1 = myCurve->Pole(1).Distance(Bs->Pole(1));
108 Standard_Real d2 = myCurve->Pole(1).Distance(Bs->Pole(LBs));
109 if (d1 < d2) {
110 Bs->Reverse();
111 d2 = d1;
112 }
113 if (d2 < myTol) {
7fd59977 114 Add(Bs, myCurve, Standard_False);
115 return Standard_True;
116 }
117 }
118 }
119 // Ajout Apres ?
120 else {
121
122 Standard_Real d1 = myCurve->Pole(LCb).Distance(Bs->Pole(1));
123 Standard_Real d2 = myCurve->Pole(LCb).Distance(Bs->Pole(LBs));
124 if (( d1 < myTol) || ( d2 < myTol)) {
125 if (d2 < d1) {Bs->Reverse();}
126 Add(myCurve, Bs, Standard_True);
127 return Standard_True;
128 }
129 // Ajout avant ?
130 else {
131 d1 = myCurve->Pole(1).Distance(Bs->Pole(1));
132 d2 = myCurve->Pole(1).Distance(Bs->Pole(LBs));
133 if ( (d1 < myTol) || (d2 < myTol)) {
134 if (d1 < d2) {Bs->Reverse();}
135 Add(Bs, myCurve, Standard_False );
136 return Standard_True;
137 }
138 }
139 }
140 return Standard_False;
141}
142
b514beda 143//=======================================================================
144//function : Add
145//purpose :
146//=======================================================================
147
7fd59977 148void Geom2dConvert_CompCurveToBSplineCurve::Add(
149 Handle(Geom2d_BSplineCurve)& FirstCurve,
150 Handle(Geom2d_BSplineCurve)& SecondCurve,
151 const Standard_Boolean After)
152{
153// Harmonisation des degres.
154 Standard_Integer Deg = Max(FirstCurve->Degree(), SecondCurve->Degree());
155 if (FirstCurve->Degree() < Deg) { FirstCurve->IncreaseDegree(Deg); }
156 if (SecondCurve->Degree() < Deg) { SecondCurve->IncreaseDegree(Deg); }
157
158// Declarationd
159 Standard_Real L1, L2, U_de_raccord;
160 Standard_Integer ii, jj;
161 Standard_Real Ratio=1, Ratio1, Ratio2, Delta1, Delta2;
162 Standard_Integer NbP1 = FirstCurve->NbPoles(), NbP2 = SecondCurve->NbPoles();
163 Standard_Integer NbK1 = FirstCurve->NbKnots(), NbK2 = SecondCurve->NbKnots();
164 TColStd_Array1OfReal Noeuds (1, NbK1+NbK2-1);
165 TColgp_Array1OfPnt2d Poles (1, NbP1+ NbP2-1);
166 TColStd_Array1OfReal Poids (1, NbP1+ NbP2-1);
167 TColStd_Array1OfInteger Mults (1, NbK1+NbK2-1);
168
169 // Ratio de reparametrisation (C1 si possible)
170 L1 = FirstCurve->DN(FirstCurve->LastParameter(), 1).Magnitude();
171 L2 = SecondCurve->DN(SecondCurve->FirstParameter(), 1). Magnitude();
172
173 if ( (L1 > Precision::Confusion()) && (L2 > Precision::Confusion()) ) {
174 Ratio = L1 / L2;
175 }
176 if ( (Ratio < Precision::Confusion()) || (Ratio > 1/Precision::Confusion()) ) {Ratio = 1;}
177
178 if (After) {
179// On ne bouge pas la premiere courbe
180 Ratio1 = 1;
181 Delta1 = 0;
182 Ratio2 = 1/Ratio;
183 Delta2 = Ratio2*SecondCurve->Knot(1) - FirstCurve->Knot(NbK1);
184 U_de_raccord = FirstCurve->LastParameter();
185 }
186 else {
187// On ne bouge pas la seconde courbe
188 Ratio1 = Ratio;
189 Delta1 = Ratio1*FirstCurve->Knot(NbK1) - SecondCurve->Knot(1);
190 Ratio2 = 1;
191 Delta2 = 0;
192 U_de_raccord = SecondCurve->FirstParameter();
193 }
194
195// Les Noeuds
196
197 for (ii=1; ii<NbK1; ii++) {
198 Noeuds(ii) = Ratio1*FirstCurve->Knot(ii) - Delta1;
199 Mults(ii) = FirstCurve->Multiplicity(ii);
200 }
201 Noeuds(NbK1) = U_de_raccord;
202 Mults(NbK1) = FirstCurve->Degree();
203 for (ii=2, jj=NbK1+1; ii<=NbK2; ii++, jj++) {
204 Noeuds(jj) = Ratio2*SecondCurve->Knot(ii) - Delta2;
205 Mults(jj) = SecondCurve->Multiplicity(ii);
206 }
207 Ratio = FirstCurve->Weight(NbP1) ;
208 Ratio /= SecondCurve->Weight(1) ;
209// Les Poles et Poids
210 for (ii=1; ii<NbP1; ii++) {
211 Poles(ii) = FirstCurve->Pole(ii);
212 Poids(ii) = FirstCurve->Weight(ii);
213 }
214 for (ii=1, jj=NbP1; ii<=NbP2; ii++, jj++) {
215 Poles(jj) = SecondCurve->Pole(ii);
216//
217// attentiion les poids ne se raccord pas forcement C0
218// d'ou Ratio
219//
220 Poids(jj) = Ratio * SecondCurve->Weight(ii);
221 }
222
223// Creation de la BSpline
224 myCurve = new (Geom2d_BSplineCurve) (Poles, Poids, Noeuds, Mults, Deg);
225
226// Reduction eventuelle de la multiplicite
227 Standard_Boolean Ok = Standard_True;
228 Standard_Integer M = Mults(NbK1);
229 while ( (M>0) && Ok) {
230 M--;
231 Ok = myCurve->RemoveKnot(NbK1, M, myTol);
232 }
233}
234
b514beda 235//=======================================================================
236//function : BSplineCurve
237//purpose :
238//=======================================================================
7fd59977 239
240Handle(Geom2d_BSplineCurve) Geom2dConvert_CompCurveToBSplineCurve::BSplineCurve() const
241{
b514beda 242 return myCurve;
243}
244
245//=======================================================================
246//function : Clear
247//purpose :
248//=======================================================================
249
250void Geom2dConvert_CompCurveToBSplineCurve::Clear()
251{
252 myCurve.Nullify();
7fd59977 253}