1 // Copyright (C) 2005 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
2 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License.
9 // This library is distributed in the hope that it will be useful
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
21 #include <Standard_Stream.hxx>
23 #include <GEOMImpl_FillingDriver.hxx>
24 #include <GEOM_Function.hxx>
25 #include <GEOMImpl_IFilling.hxx>
26 #include <GEOMImpl_Types.hxx>
28 #include <BRep_Tool.hxx>
29 #include <BRepAlgo.hxx>
30 #include <BRepBuilderAPI_MakeFace.hxx>
34 #include <TopoDS_Shape.hxx>
35 #include <TopExp_Explorer.hxx>
37 #include <Geom_Curve.hxx>
38 #include <Geom_Surface.hxx>
39 #include <Geom_TrimmedCurve.hxx>
40 #include <Geom_BSplineSurface.hxx>
41 #include <GeomFill_Line.hxx>
42 #include <GeomFill_AppSurf.hxx>
43 #include <GeomFill_SectionGenerator.hxx>
45 #include <Precision.hxx>
46 #include <Standard_ConstructionError.hxx>
48 #include <TColGeom_SequenceOfCurve.hxx>
49 #include <ShapeFix_Face.hxx>
50 #include <GeomAPI_PointsToBSplineSurface.hxx>
51 #include <Geom_BSplineCurve.hxx>
53 //=======================================================================
56 //=======================================================================
57 const Standard_GUID& GEOMImpl_FillingDriver::GetID()
59 static Standard_GUID aFillingDriver ("FF1BBB62-5D14-4df2-980B-3A668264EA16");
60 return aFillingDriver;
64 //=======================================================================
65 //function : GEOMImpl_FillingDriver
67 //=======================================================================
69 GEOMImpl_FillingDriver::GEOMImpl_FillingDriver()
73 //=======================================================================
76 //=======================================================================
77 Standard_Integer GEOMImpl_FillingDriver::Execute(TFunction_Logbook& log) const
79 if (Label().IsNull()) return 0;
80 Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());
81 if (aFunction.IsNull()) return 0;
83 if (aFunction->GetType() != BASIC_FILLING) return 0;
85 GEOMImpl_IFilling IF (aFunction);
86 Handle(GEOM_Function) aShapeFunction = IF.GetShape();
87 if (aShapeFunction.IsNull()) return 0;
88 TopoDS_Shape aShape = aShapeFunction->GetValue();
89 if (aShape.IsNull() || aShape.ShapeType() != TopAbs_COMPOUND) return 0;
91 Standard_Integer mindeg = IF.GetMinDeg();
92 Standard_Integer maxdeg = IF.GetMaxDeg();
93 Standard_Real tol3d = IF.GetTol2D();
94 Standard_Real tol2d = IF.GetTol3D();
95 Standard_Integer nbiter = IF.GetNbIter();
96 Standard_Boolean isApprox = IF.GetApprox();
98 if (mindeg > maxdeg) {
99 Standard_RangeError::Raise("Minimal degree can not be more than maximal degree");
102 /* we verify the contents of the shape */
104 TopoDS_Shape Scurrent;
105 Standard_Real First, Last;
106 Handle(Geom_Curve) C;
109 // make filling as in old version of SALOME (before 4.1.1)
110 GeomFill_SectionGenerator Section;
111 Standard_Integer i = 0;
112 for (Ex.Init(aShape, TopAbs_EDGE); Ex.More(); Ex.Next()) {
113 Scurrent = Ex.Current() ;
114 if (Scurrent.IsNull() || Scurrent.ShapeType() != TopAbs_EDGE) return 0;
115 C = BRep_Tool::Curve(TopoDS::Edge(Scurrent), First, Last);
116 C = new Geom_TrimmedCurve(C, First, Last);
121 /* a 'tolerance' is used to compare 2 knots : see GeomFill_Generator.cdl */
122 Section.Perform(Precision::Confusion());
123 Handle(GeomFill_Line) Line = new GeomFill_Line(i);
125 GeomFill_AppSurf App (mindeg, maxdeg, tol3d, tol2d, nbiter); /* user parameters */
126 App.Perform(Line, Section);
128 if (!App.IsDone()) return 0;
129 Standard_Integer UDegree, VDegree, NbUPoles, NbVPoles, NbUKnots, NbVKnots;
130 App.SurfShape(UDegree, VDegree, NbUPoles, NbVPoles, NbUKnots, NbVKnots);
131 Handle(Geom_BSplineSurface) GBS = new Geom_BSplineSurface
132 (App.SurfPoles(), App.SurfWeights(), App.SurfUKnots(), App.SurfVKnots(),
133 App.SurfUMults(), App.SurfVMults(), App.UDegree(), App.VDegree());
135 if (GBS.IsNull()) return 0;
136 aShape = BRepBuilderAPI_MakeFace(GBS);
139 // implemented by skl 20.03.2008 for bug 16568
140 // make approximation - try to create bspline surface
141 // using GeomAPI_PointsToBSplineSurface
142 TColGeom_SequenceOfCurve aSeq;
144 // add curves from edges to sequence and find maximal
145 // number of poles if some of them are bsplines
146 for (Ex.Init(aShape, TopAbs_EDGE); Ex.More(); Ex.Next()) {
147 Scurrent = Ex.Current() ;
148 if (Scurrent.IsNull() || Scurrent.ShapeType() != TopAbs_EDGE) return 0;
149 C = BRep_Tool::Curve(TopoDS::Edge(Scurrent), First, Last);
150 Handle(Geom_TrimmedCurve) TC = Handle(Geom_TrimmedCurve)::DownCast(C);
152 Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(C);
154 MaxNbPoles = Max(MaxNbPoles,BC->NbPoles());
158 Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(TC->BasisCurve());
160 Handle(Geom_TrimmedCurve) TC1 = Handle(Geom_TrimmedCurve)::DownCast(TC->BasisCurve());
162 BC = Handle(Geom_BSplineCurve)::DownCast(TC1->BasisCurve());
166 MaxNbPoles = Max(MaxNbPoles,BC->NbPoles());
171 // prepare array of points for creation bspline surface
172 // size of this array: by U parameter - number of curves,
173 // by V parameter - determ using MaxNbPoles but it's
174 // value must be between 21(min) and 101(max)
175 int nbc = aSeq.Length();
176 int nbp = Max(21,2*MaxNbPoles-1);
177 if(nbp>101) nbp = 101;
178 TColgp_Array2OfPnt Points(1,nbc,1,nbp);
180 for(; ic<=nbc; ic++) {
181 Handle(Geom_Curve) C = aSeq.Value(ic);
182 double fp = C->FirstParameter();
183 double lp = C->LastParameter();
184 double dp = (lp-fp)/(nbp-1);
189 Points.SetValue(ic,j+1,P);
192 GeomAPI_PointsToBSplineSurface PTB(Points,mindeg,maxdeg,GeomAbs_C2,tol3d);
193 Handle(Geom_BSplineSurface) BS = PTB.Surface();
194 BRepBuilderAPI_MakeFace BB(BS);
195 TopoDS_Face NewF = BB.Face();
196 Handle(ShapeFix_Face) sff = new ShapeFix_Face(NewF);
198 sff->FixOrientation();
199 aShape = sff->Face();
202 /* We test the validity of resulting shape */
203 if (!BRepAlgo::IsValid((aShape))) {
204 Standard_ConstructionError::Raise("Algorithm have produced an invalid shape result");
208 aFunction->SetValue(aShape);
210 log.SetTouched(Label());
215 //=======================================================================
216 //function : GEOMImpl_FillingDriver_Type_
218 //=======================================================================
219 Standard_EXPORT Handle_Standard_Type& GEOMImpl_FillingDriver_Type_()
222 static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
223 if ( aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
224 static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
225 if ( aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
226 static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
227 if ( aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);
230 static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
231 static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_FillingDriver",
232 sizeof(GEOMImpl_FillingDriver),
234 (Standard_Address)_Ancestors,
235 (Standard_Address)NULL);
240 //=======================================================================
241 //function : DownCast
243 //=======================================================================
245 const Handle(GEOMImpl_FillingDriver) Handle(GEOMImpl_FillingDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
247 Handle(GEOMImpl_FillingDriver) _anOtherObject;
249 if (!AnObject.IsNull()) {
250 if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_FillingDriver))) {
251 _anOtherObject = Handle(GEOMImpl_FillingDriver)((Handle(GEOMImpl_FillingDriver)&)AnObject);
255 return _anOtherObject ;