0027275: Unused formal parameter in BSplCLib::EvalBsplineBasis
[occt.git] / src / GeomLib / GeomLib_DenominatorMultiplier.cxx
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b311480e 1// Created on: 1997-05-13
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.
7fd59977 16
42cf5bc1 17
18#include <BSplSLib.hxx>
19#include <Geom_BSplineSurface.hxx>
20#include <GeomLib_DenominatorMultiplier.hxx>
7fd59977 21#include <gp_Pnt.hxx>
22#include <gp_Vec.hxx>
42cf5bc1 23#include <math_Matrix.hxx>
24#include <Standard_ConstructionError.hxx>
25#include <Standard_OutOfRange.hxx>
7fd59977 26#include <TColgp_Array2OfPnt.hxx>
7fd59977 27#include <TColStd_Array1OfInteger.hxx>
42cf5bc1 28#include <TColStd_Array1OfReal.hxx>
29#include <TColStd_Array2OfReal.hxx>
7fd59977 30
31//=======================================================================
32//function :GeomLib_DenominatorMultiplier
33//purpose :
34//=======================================================================
7fd59977 35GeomLib_DenominatorMultiplier::GeomLib_DenominatorMultiplier
36 (const Handle(Geom_BSplineSurface) & Surface,
37 const TColStd_Array1OfReal & KnotVector):mySurface(Surface),
38 myKnotFlatVector(1,KnotVector.Length())
39{Standard_Integer i;
40 for (i=1;i<=KnotVector.Length();i++)
41 myKnotFlatVector.SetValue(i,KnotVector(i));
42}
43
44//=======================================================================
45//function : value
46//purpose : give the value of a(UParameter,VParameter)
47//=======================================================================
48
49Standard_Real GeomLib_DenominatorMultiplier::Value(const Standard_Real UParameter,
50 const Standard_Real VParameter)const
51
52{Standard_Real Dumaxv,Duminv,dDduumaxv,dDduuminv,
53 Dv,Buv=0.0;
54// gp_Pnt HermPnt;
55 gp_Pnt N;
56 gp_Vec Nu,Nv;
57 TColgp_Array2OfPnt surface_poles(1,mySurface->NbUPoles(),
58 1,mySurface->NbVPoles()) ;
59 TColStd_Array2OfReal surface_weights(1,mySurface->NbUPoles(),
60 1,mySurface->NbVPoles()) ;
61 TColStd_Array1OfReal surface_u_knots(1,mySurface->NbUKnots()) ;
62 TColStd_Array1OfInteger surface_u_mults(1,mySurface->NbUKnots()) ;
63
64 TColStd_Array1OfReal surface_v_knots(1,mySurface->NbVKnots()) ;
65 TColStd_Array1OfInteger surface_v_mults(1,mySurface->NbVKnots()) ;
66 Standard_Integer udegree,vdegree;
67
68 mySurface->UKnots(surface_u_knots) ;
69 mySurface->UMultiplicities(surface_u_mults) ;
70 mySurface->Poles(surface_poles) ;
71 mySurface->Weights(surface_weights) ;
72 mySurface->VKnots(surface_v_knots) ;
73 mySurface->VMultiplicities(surface_v_mults) ;
74 udegree=mySurface->UDegree();
75 vdegree=mySurface->VDegree();
76
77 BSplSLib::HomogeneousD1(mySurface->UKnot(mySurface->LastUKnotIndex()),VParameter,
78 0,0,
79 surface_poles,
0e14656b 80 &surface_weights,
7fd59977 81 surface_u_knots,surface_v_knots,
0e14656b 82 &surface_u_mults,&surface_v_mults,
7fd59977 83 udegree,vdegree,
84 mySurface->IsURational(),mySurface->IsVRational(),
85 mySurface->IsUPeriodic(),mySurface->IsVPeriodic(),
86 N,Nu,Nv,
87 Dumaxv,
88 dDduumaxv,
89 Dv);
90 BSplSLib::HomogeneousD1(mySurface->UKnot(1),VParameter,
91 0,0,
92 surface_poles,
0e14656b 93 &surface_weights,
7fd59977 94 surface_u_knots,surface_v_knots,
0e14656b 95 &surface_u_mults,&surface_v_mults,
7fd59977 96 udegree,vdegree,
97 mySurface->IsURational(),mySurface->IsVRational(),
98 mySurface->IsUPeriodic(),mySurface->IsVPeriodic(),
99 N,Nu,Nv,
100 Duminv,
101 dDduuminv,
102 Dv);
103
104 math_Matrix BSplineBasisDeriv(1,2,1,4,0.0);
105 Standard_Real B1prim0,Bprelastprim1,
106 lambda=(mySurface->Weight(1,1)/mySurface->Weight(mySurface->NbUPoles(),1));
107 Standard_Integer index,i;
108
109 BSplCLib::EvalBsplineBasis(1,
7fd59977 110 4,
111 myKnotFlatVector,
112 0.0,
113 index,
114 BSplineBasisDeriv);
115 B1prim0=BSplineBasisDeriv(2,2);
116
117 BSplCLib::EvalBsplineBasis(1,
7fd59977 118 4,
119 myKnotFlatVector,
120 1.0,
121 index,
122 BSplineBasisDeriv);
123 Bprelastprim1=BSplineBasisDeriv(2,3);
124
125 math_Matrix BSplineBasisValue(1,1,1,4,0.0);
6143f12f 126 BSplCLib::EvalBsplineBasis(0,
7fd59977 127 4,
128 myKnotFlatVector,
129 UParameter,
130 index,
131 BSplineBasisValue);
132
133 TColStd_Array1OfReal value(0,5);
134 TColStd_Array1OfReal Polesenv(0,5); //poles of a(u,v)
135
136 for (i=0;i<=5;i++)
137 Polesenv(i)=0.0;
138 Polesenv(0)=Duminv;
139 Polesenv(1)=Duminv-dDduuminv/B1prim0;
140 Polesenv(4)=lambda*lambda*(Dumaxv-dDduumaxv/Bprelastprim1);
141 Polesenv(5)=lambda*lambda*Dumaxv;
142
143 if (myKnotFlatVector.Length()==8){
144 value(0)=BSplineBasisValue(1,1); //values of the basic functions
145 value(1)=BSplineBasisValue(1,2);
146 value(2)=0.0;
147 value(3)=0.0;
148 value(4)=BSplineBasisValue(1,3);
149 value(5)=BSplineBasisValue(1,4);
150 }
151 if (myKnotFlatVector.Length()==9){
152 if (index==1){
153 value(0)=BSplineBasisValue(1,1);
154 value(1)=BSplineBasisValue(1,2);
155 value(2)=BSplineBasisValue(1,3);
156 value(3)=0.0;
157 value(4)=BSplineBasisValue(1,4);
158 value(5)=0.0;
159 }
160 else{
161 value(0)=0.0;
162 value(1)=BSplineBasisValue(1,1);
163 value(2)=BSplineBasisValue(1,2);
164 value(3)=0.0;
165 value(4)=BSplineBasisValue(1,3);
166 value(5)=BSplineBasisValue(1,4);
167 }
168 Polesenv(2)=(0.5*(Polesenv(0)+Polesenv(5)));
169 }
170 if (myKnotFlatVector.Length()==10){
171 if (index==1){
172 value(0)=BSplineBasisValue(1,1);
173 value(1)=BSplineBasisValue(1,2);
174 value(2)=BSplineBasisValue(1,3);
175 value(3)=BSplineBasisValue(1,4);
176 value(4)=0.0;
177 value(5)=0.0;
178 }
179 if (index==2){
180 value(0)=0.0;
181 value(1)=BSplineBasisValue(1,1);
182 value(2)=BSplineBasisValue(1,2);
183 value(3)=BSplineBasisValue(1,3);
184 value(4)=BSplineBasisValue(1,4);
185 value(5)=0.0;
186 }
187 if (index==3){
188 value(0)=0.0;
189 value(1)=0.0;
190 value(2)=BSplineBasisValue(1,1);
191 value(3)=BSplineBasisValue(1,2);
192 value(4)=BSplineBasisValue(1,3);
193 value(5)=BSplineBasisValue(1,4);
194 }
195 Polesenv(2)=(0.5*(Polesenv(0)+Polesenv(5)));
196 Polesenv(3)=Polesenv(2);
197 }
198 for (i=0;i<=5;i++)
199 Buv+=Polesenv(i)*value(i);
200 return Buv;
201}
202
203
204
205