1 // Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
22 #include <Standard_Stream.hxx>
24 #include <GEOMImpl_FillingDriver.hxx>
25 #include <GEOM_Function.hxx>
26 #include <GEOMImpl_IFilling.hxx>
27 #include <GEOMImpl_Types.hxx>
29 #include <BRep_Tool.hxx>
30 #include <BRepAlgo.hxx>
31 #include <BRepBuilderAPI_MakeFace.hxx>
35 #include <TopoDS_Shape.hxx>
36 #include <TopExp_Explorer.hxx>
38 #include <Geom_Curve.hxx>
39 #include <Geom_Surface.hxx>
40 #include <Geom_TrimmedCurve.hxx>
41 #include <Geom_BSplineSurface.hxx>
42 #include <GeomFill_Line.hxx>
43 #include <GeomFill_AppSurf.hxx>
44 #include <GeomFill_SectionGenerator.hxx>
46 #include <Precision.hxx>
47 #include <Standard_ConstructionError.hxx>
49 #include <TColGeom_SequenceOfCurve.hxx>
50 #include <ShapeFix_Face.hxx>
51 #include <GeomAPI_PointsToBSplineSurface.hxx>
52 #include <Geom_BSplineCurve.hxx>
54 //=======================================================================
57 //=======================================================================
58 const Standard_GUID& GEOMImpl_FillingDriver::GetID()
60 static Standard_GUID aFillingDriver ("FF1BBB62-5D14-4df2-980B-3A668264EA16");
61 return aFillingDriver;
65 //=======================================================================
66 //function : GEOMImpl_FillingDriver
68 //=======================================================================
70 GEOMImpl_FillingDriver::GEOMImpl_FillingDriver()
74 //=======================================================================
77 //=======================================================================
78 Standard_Integer GEOMImpl_FillingDriver::Execute(TFunction_Logbook& log) const
80 if (Label().IsNull()) return 0;
81 Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());
82 if (aFunction.IsNull()) return 0;
84 if (aFunction->GetType() != BASIC_FILLING) return 0;
86 GEOMImpl_IFilling IF (aFunction);
87 Handle(GEOM_Function) aShapeFunction = IF.GetShape();
88 if (aShapeFunction.IsNull()) return 0;
89 TopoDS_Shape aShape = aShapeFunction->GetValue();
90 if (aShape.IsNull() || aShape.ShapeType() != TopAbs_COMPOUND) return 0;
92 Standard_Integer mindeg = IF.GetMinDeg();
93 Standard_Integer maxdeg = IF.GetMaxDeg();
94 Standard_Real tol3d = IF.GetTol2D();
95 Standard_Real tol2d = IF.GetTol3D();
96 Standard_Integer nbiter = IF.GetNbIter();
97 Standard_Boolean isApprox = IF.GetApprox();
99 if (mindeg > maxdeg) {
100 Standard_RangeError::Raise("Minimal degree can not be more than maximal degree");
103 /* we verify the contents of the shape */
105 TopoDS_Shape Scurrent;
106 Standard_Real First, Last;
107 Handle(Geom_Curve) C;
109 TopoDS_Iterator It (aShape);
110 for (; It.More(); It.Next()) {
111 Scurrent = It.Value();
112 if (Scurrent.ShapeType() != TopAbs_EDGE)
113 Standard_ConstructionError::Raise("The argument compound must contain only edges");
117 // make filling as in old version of SALOME (before 4.1.1)
118 GeomFill_SectionGenerator Section;
119 Standard_Integer i = 0;
120 for (Ex.Init(aShape, TopAbs_EDGE); Ex.More(); Ex.Next()) {
121 Scurrent = Ex.Current();
122 if (Scurrent.IsNull() || Scurrent.ShapeType() != TopAbs_EDGE) return 0;
123 if (BRep_Tool::Degenerated(TopoDS::Edge(Scurrent))) continue;
124 C = BRep_Tool::Curve(TopoDS::Edge(Scurrent), First, Last);
125 C = new Geom_TrimmedCurve(C, First, Last);
130 /* a 'tolerance' is used to compare 2 knots : see GeomFill_Generator.cdl */
131 Section.Perform(Precision::Confusion());
132 Handle(GeomFill_Line) Line = new GeomFill_Line(i);
134 GeomFill_AppSurf App (mindeg, maxdeg, tol3d, tol2d, nbiter); /* user parameters */
135 App.Perform(Line, Section);
137 if (!App.IsDone()) return 0;
138 Standard_Integer UDegree, VDegree, NbUPoles, NbVPoles, NbUKnots, NbVKnots;
139 App.SurfShape(UDegree, VDegree, NbUPoles, NbVPoles, NbUKnots, NbVKnots);
140 Handle(Geom_BSplineSurface) GBS = new Geom_BSplineSurface
141 (App.SurfPoles(), App.SurfWeights(), App.SurfUKnots(), App.SurfVKnots(),
142 App.SurfUMults(), App.SurfVMults(), App.UDegree(), App.VDegree());
144 if (GBS.IsNull()) return 0;
145 aShape = BRepBuilderAPI_MakeFace(GBS);
148 // implemented by skl 20.03.2008 for bug 16568
149 // make approximation - try to create bspline surface
150 // using GeomAPI_PointsToBSplineSurface
151 TColGeom_SequenceOfCurve aSeq;
153 // add curves from edges to sequence and find maximal
154 // number of poles if some of them are bsplines
155 for (Ex.Init(aShape, TopAbs_EDGE); Ex.More(); Ex.Next()) {
156 Scurrent = Ex.Current();
157 if (Scurrent.IsNull() || Scurrent.ShapeType() != TopAbs_EDGE) return 0;
158 if (BRep_Tool::Degenerated(TopoDS::Edge(Scurrent))) continue;
159 C = BRep_Tool::Curve(TopoDS::Edge(Scurrent), First, Last);
160 Handle(Geom_TrimmedCurve) TC = Handle(Geom_TrimmedCurve)::DownCast(C);
162 Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(C);
164 MaxNbPoles = Max(MaxNbPoles,BC->NbPoles());
168 Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(TC->BasisCurve());
170 Handle(Geom_TrimmedCurve) TC1 = Handle(Geom_TrimmedCurve)::DownCast(TC->BasisCurve());
172 BC = Handle(Geom_BSplineCurve)::DownCast(TC1->BasisCurve());
176 MaxNbPoles = Max(MaxNbPoles,BC->NbPoles());
181 // prepare array of points for creation bspline surface
182 // size of this array: by U parameter - number of curves,
183 // by V parameter - determ using MaxNbPoles but it's
184 // value must be between 21(min) and 101(max)
185 int nbc = aSeq.Length();
186 int nbp = Max(21,2*MaxNbPoles-1);
187 if(nbp>101) nbp = 101;
188 TColgp_Array2OfPnt Points(1,nbc,1,nbp);
190 for(; ic<=nbc; ic++) {
191 Handle(Geom_Curve) C = aSeq.Value(ic);
192 double fp = C->FirstParameter();
193 double lp = C->LastParameter();
194 double dp = (lp-fp)/(nbp-1);
199 Points.SetValue(ic,j+1,P);
202 GeomAPI_PointsToBSplineSurface PTB(Points,mindeg,maxdeg,GeomAbs_C2,tol3d);
203 Handle(Geom_BSplineSurface) BS = PTB.Surface();
204 BRepBuilderAPI_MakeFace BB(BS);
205 TopoDS_Face NewF = BB.Face();
206 Handle(ShapeFix_Face) sff = new ShapeFix_Face(NewF);
208 sff->FixOrientation();
209 aShape = sff->Face();
212 /* We test the validity of resulting shape */
213 if (!BRepAlgo::IsValid((aShape))) {
214 Standard_ConstructionError::Raise("Algorithm have produced an invalid shape result");
218 aFunction->SetValue(aShape);
220 log.SetTouched(Label());
225 //=======================================================================
226 //function : GEOMImpl_FillingDriver_Type_
228 //=======================================================================
229 Standard_EXPORT Handle_Standard_Type& GEOMImpl_FillingDriver_Type_()
232 static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
233 if ( aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
234 static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
235 if ( aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
236 static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
237 if ( aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);
240 static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
241 static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_FillingDriver",
242 sizeof(GEOMImpl_FillingDriver),
244 (Standard_Address)_Ancestors,
245 (Standard_Address)NULL);
250 //=======================================================================
251 //function : DownCast
253 //=======================================================================
255 const Handle(GEOMImpl_FillingDriver) Handle(GEOMImpl_FillingDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
257 Handle(GEOMImpl_FillingDriver) _anOtherObject;
259 if (!AnObject.IsNull()) {
260 if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_FillingDriver))) {
261 _anOtherObject = Handle(GEOMImpl_FillingDriver)((Handle(GEOMImpl_FillingDriver)&)AnObject);
265 return _anOtherObject ;