1 // Created on: 1995-01-30
2 // Created by: Marie Jose MARTZ
3 // Copyright (c) 1995-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 //:n3 abv 8 Feb 99: PRO17820: BRepTools::OuterWire() -> ShapeAnalysis::OuterWire
20 #include <BRep_Builder.hxx>
21 #include <BRep_Tool.hxx>
22 #include <BRepToIGES_BREntity.hxx>
23 #include <BRepToIGES_BRShell.hxx>
24 #include <BRepToIGES_BRWire.hxx>
25 #include <BRepTools.hxx>
26 #include <Geom2d_Curve.hxx>
27 #include <Geom_ConicalSurface.hxx>
28 #include <Geom_CylindricalSurface.hxx>
29 #include <Geom_Plane.hxx>
30 #include <Geom_RectangularTrimmedSurface.hxx>
31 #include <Geom_SphericalSurface.hxx>
32 #include <Geom_Surface.hxx>
33 #include <Geom_SurfaceOfRevolution.hxx>
34 #include <Geom_ToroidalSurface.hxx>
35 #include <GeomToIGES_GeomSurface.hxx>
37 #include <gp_Trsf.hxx>
38 #include <IGESBasic_Group.hxx>
39 #include <IGESData_HArray1OfIGESEntity.hxx>
40 #include <IGESData_IGESEntity.hxx>
41 #include <IGESGeom_CurveOnSurface.hxx>
42 #include <IGESGeom_HArray1OfCurveOnSurface.hxx>
43 #include <IGESGeom_SurfaceOfRevolution.hxx>
44 #include <IGESGeom_TrimmedSurface.hxx>
45 #include <Interface_Macros.hxx>
46 #include <Message_ProgressIndicator.hxx>
47 #include <NCollection_IncAllocator.hxx>
48 #include <NCollection_Map.hxx>
49 #include <ShapeAlgo.hxx>
50 #include <ShapeAlgo_AlgoContainer.hxx>
51 #include <TColStd_HSequenceOfTransient.hxx>
52 #include <TopAbs_ShapeEnum.hxx>
54 #include <TopExp_Explorer.hxx>
55 #include <TopLoc_Location.hxx>
57 #include <TopoDS_Edge.hxx>
58 #include <TopoDS_Face.hxx>
59 #include <TopoDS_Shape.hxx>
60 #include <TopoDS_Shell.hxx>
61 #include <TopoDS_Vertex.hxx>
62 #include <TopoDS_Wire.hxx>
63 #include <TopTools_ShapeMapHasher.hxx>
64 #include <Transfer_FinderProcess.hxx>
66 //=============================================================================
68 //=============================================================================
69 BRepToIGES_BRShell::BRepToIGES_BRShell()
74 //=============================================================================
76 //=============================================================================
78 BRepToIGES_BRShell::BRepToIGES_BRShell
79 (const BRepToIGES_BREntity& BR)
80 : BRepToIGES_BREntity(BR)
85 //=============================================================================
87 //=============================================================================
89 Handle(IGESData_IGESEntity) BRepToIGES_BRShell ::TransferShell(const TopoDS_Shape& start)
91 Handle(IGESData_IGESEntity) res;
93 if (start.IsNull()) return res;
95 if (start.ShapeType() == TopAbs_FACE) {
96 TopoDS_Face F = TopoDS::Face(start);
97 res = TransferFace(F);
99 else if (start.ShapeType() == TopAbs_SHELL) {
100 TopoDS_Shell S = TopoDS::Shell(start);
101 res = TransferShell(S);
110 //=============================================================================
113 //=============================================================================
115 Handle(IGESData_IGESEntity) BRepToIGES_BRShell ::TransferFace(const TopoDS_Face& start)
117 Handle(IGESData_IGESEntity) res;
119 Handle(Message_ProgressIndicator) progress = GetTransferProcess()->GetProgress();
120 if ( ! progress.IsNull() ) {
121 if ( progress->UserBreak() ) return res;
122 progress->Increment();
125 if ( start.IsNull()) {
129 // pour explorer la face , il faut la mettre fORWARD.
131 if (start.Orientation() == TopAbs_REVERSED) {
132 //create face with redirected surface
134 TopLoc_Location aLoc;
135 Handle(Geom_Surface) aSurf = BRep_Tool::Surface(start, aLoc);
136 while (aSurf->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface)))
138 // take basis surface, because pcurves will be transformed, so trim will be shifted,
139 // accorded to new face bounds
140 Handle(Geom_RectangularTrimmedSurface) aTrimmedSurf =
141 Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurf);
142 aSurf = aTrimmedSurf->BasisSurface();
144 aSurf = aSurf->UReversed();
145 Standard_Real aTol = BRep_Tool::Tolerance(start);
146 B.MakeFace(myface, aSurf, aLoc ,aTol);
147 // set specifics flags of a Face
148 B.NaturalRestriction(myface, BRep_Tool::NaturalRestriction(start));
150 TopoDS_Wire anOuter = TopoDS::Wire(ShapeAlgo::AlgoContainer()->OuterWire(start));
152 for (ex.Init(start,TopAbs_WIRE); ex.More(); ex.Next()) {
153 TopoDS_Wire W = TopoDS::Wire(ex.Current());
154 if (!W.IsNull() && W.IsSame(anOuter)) {
159 for (ex.Init(start,TopAbs_WIRE); ex.More(); ex.Next()) {
160 TopoDS_Wire W = TopoDS::Wire(ex.Current());
161 if (!W.IsNull() && !W.IsSame(anOuter)) {
167 Standard_Real U1, U2, V1, V2;
168 aSurf->Bounds(U1, U2, V1, V2);
169 Standard_Real aCenter = 0.5 * (U1 + U2);
171 gp_Ax2d axis(gp_Pnt2d(aCenter, V1), gp_Dir2d(0.,1.));
173 NCollection_Map<TopoDS_Shape, TopTools_ShapeMapHasher> aMap (101, new NCollection_IncAllocator);
174 for (ex.Init(myface,TopAbs_EDGE);ex.More(); ex.Next()) {
175 TopoDS_Edge anEdge = TopoDS::Edge(ex.Current());
176 if (!aMap.Add(anEdge))
177 // seam edge has been already updated
180 Handle(Geom2d_Curve) aCurve1, aCurve2;
181 aCurve1 = BRep_Tool::CurveOnSurface(anEdge, start, f, l);
182 aTol = BRep_Tool::Tolerance(anEdge);
183 if (!aCurve1.IsNull()) {
184 aCurve1 = Handle(Geom2d_Curve)::DownCast(aCurve1->Transformed(T));
185 if (BRepTools::IsReallyClosed(anEdge, start)) {
186 TopoDS_Edge revEdge = TopoDS::Edge(anEdge.Reversed());
187 aCurve2 = BRep_Tool::CurveOnSurface(revEdge, start, f, l);
188 if (!aCurve2.IsNull()) {
189 aCurve2 = Handle(Geom2d_Curve)::DownCast(aCurve2->Transformed(T));
190 if (anEdge.Orientation() == TopAbs_FORWARD)
191 B.UpdateEdge(anEdge, aCurve1, aCurve2, myface, aTol);
193 B.UpdateEdge(anEdge, aCurve2, aCurve1, myface, aTol);
196 B.UpdateEdge(anEdge, aCurve1, myface, aTol);
200 B.UpdateEdge(anEdge, aCurve1, myface, aTol);
202 // set range for degenerated edges
203 if (BRep_Tool::Degenerated(anEdge)) {
204 B.Range(anEdge, myface, f, l);
213 //Standard_Integer Nb = 0; //szv#4:S4163:12Mar99 unused
214 Standard_Real Length = 1.;
215 Handle(IGESData_IGESEntity) ISurf;
217 // returns the face surface
218 // ------------------------
220 Handle(Geom_Surface) Surf = BRep_Tool::Surface(myface);
221 Handle(Geom_Surface) Surf1;
223 if (!Surf.IsNull()) {
224 Standard_Real U1, U2, V1, V2;
225 // pour limiter les surfaces de base
226 BRepTools::UVBounds(myface, U1, U2, V1, V2);
227 GeomToIGES_GeomSurface GS;
228 GS.SetModel(GetModel());
229 ISurf = GS.TransferSurface(Surf, U1, U2, V1, V2);
230 if (ISurf.IsNull()) {
231 AddWarning (start, "the basic surface is a null entity");
234 Length = GS.Length();
236 // modif mjm du 17/07/97
237 if (Surf->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
238 DeclareAndCast(Geom_RectangularTrimmedSurface, rectang, Surf);
239 Surf1 = rectang->BasisSurface();
246 // returns the wires of the face
247 // -----------------------------
249 BRepToIGES_BRWire BW(*this);
250 Standard_Integer Imode = 0;
251 Standard_Integer Iprefer = 0;
252 Handle(IGESData_IGESEntity) ICurve2d;
255 //:n3 TopoDS_Wire Outer = BRepTools::OuterWire(myface);
256 TopoDS_Wire Outer = ShapeAlgo::AlgoContainer()->OuterWire(myface); //:n3
257 Handle(IGESGeom_CurveOnSurface) IOuter = new IGESGeom_CurveOnSurface;
258 if (!Outer.IsNull()) {
259 Handle(IGESData_IGESEntity) ICurve3d =
260 BW.TransferWire(Outer, myface, ICurve2d, Length);
261 if ((!ICurve3d.IsNull()) && (!ICurve2d.IsNull())) Iprefer = 3;
262 if ((!ICurve3d.IsNull()) && (ICurve2d.IsNull())) Iprefer = 2;
263 if ((ICurve3d.IsNull()) && (!ICurve2d.IsNull())) Iprefer = 1;
264 IOuter -> Init (Imode, ISurf, ICurve2d, ICurve3d, Iprefer);
269 Handle(TColStd_HSequenceOfTransient) Seq = new TColStd_HSequenceOfTransient();
271 for (Ex.Init(myface,TopAbs_WIRE); Ex.More(); Ex.Next()) {
272 TopoDS_Wire W = TopoDS::Wire(Ex.Current());
273 Handle(IGESGeom_CurveOnSurface) Curve = new IGESGeom_CurveOnSurface;
275 AddWarning(start," an Wire is a null entity");
277 else if (!W.IsSame(Outer)) {
278 Handle(IGESData_IGESEntity) ICurve3d =
279 BW.TransferWire(W, myface, ICurve2d, Length);
280 if ((!ICurve3d.IsNull()) && (!ICurve2d.IsNull())) Iprefer = 3;
281 if ((!ICurve3d.IsNull()) && (ICurve2d.IsNull())) Iprefer = 2;
282 if ((ICurve3d.IsNull()) && (!ICurve2d.IsNull())) Iprefer = 1;
283 Curve-> Init (Imode, ISurf, ICurve2d, ICurve3d, Iprefer);
284 if (!Curve.IsNull()) Seq->Append(Curve);
288 // all inners edges not in a wire
289 for (Ex.Init(myface,TopAbs_EDGE,TopAbs_WIRE); Ex.More(); Ex.Next()) {
290 TopoDS_Edge E = TopoDS::Edge(Ex.Current());
291 Handle(IGESGeom_CurveOnSurface) Curve = new IGESGeom_CurveOnSurface;
293 AddWarning(start," an Edge is a null entity");
296 Handle(IGESData_IGESEntity) ICurve3d = BW.TransferEdge(E, Standard_False);
297 Handle(IGESData_IGESEntity) newICurve2d = BW.TransferEdge(E, myface, Length, Standard_False);
298 if ((!ICurve3d.IsNull()) && (!newICurve2d.IsNull())) Iprefer = 3;
299 if ((!ICurve3d.IsNull()) && (newICurve2d.IsNull())) Iprefer = 2;
300 if ((ICurve3d.IsNull()) && (!newICurve2d.IsNull())) Iprefer = 1;
301 Curve-> Init (Imode, ISurf, newICurve2d, ICurve3d, Iprefer);
302 if (!Curve.IsNull()) Seq->Append(Curve);
307 Standard_Integer nbent = Seq->Length();
308 Handle(IGESGeom_HArray1OfCurveOnSurface) Tab;
310 Tab = new IGESGeom_HArray1OfCurveOnSurface(1,nbent);
311 for (Standard_Integer itab = 1; itab <= nbent; itab++) {
312 Handle(IGESGeom_CurveOnSurface) item = GetCasted(IGESGeom_CurveOnSurface, Seq->Value(itab));
313 Tab->SetValue(itab,item);
317 // protection against faces on infinite surfaces with mistaken natural restriction flag
318 Standard_Boolean isWholeSurface = BRep_Tool::NaturalRestriction(start);
319 if ((Surf->IsKind(STANDARD_TYPE(Geom_Plane)) ||
320 Surf->IsKind(STANDARD_TYPE(Geom_CylindricalSurface)) ||
321 Surf->IsKind(STANDARD_TYPE(Geom_ConicalSurface))) && !IOuter.IsNull())
322 isWholeSurface = Standard_False;
323 // returns the TrimmedSurface
324 // --------------------------
325 Handle(IGESGeom_TrimmedSurface) TrimmedSurf = new IGESGeom_TrimmedSurface;
326 if (isWholeSurface) {
327 //if face bounds and surface bounds are same, outer wire is unnecessary
328 TrimmedSurf-> Init (ISurf, Standard_False, NULL, Tab);
331 TrimmedSurf-> Init (ISurf, Standard_True, IOuter, Tab);
334 SetShapeResult ( start, res );
339 //=============================================================================
341 //=============================================================================
343 Handle(IGESData_IGESEntity) BRepToIGES_BRShell::TransferShell(const TopoDS_Shell& start)
345 Handle(IGESData_IGESEntity) res;
346 if ( start.IsNull()) return res;
349 Handle(IGESBasic_Group) IGroup = new IGESBasic_Group;
350 Handle(TColStd_HSequenceOfTransient) Seq = new TColStd_HSequenceOfTransient();
351 Handle(IGESData_IGESEntity) IFace;
353 for (Ex.Init(start,TopAbs_FACE); Ex.More(); Ex.Next()) {
354 TopoDS_Face F = TopoDS::Face(Ex.Current());
356 AddWarning(start," a Face is a null entity");
359 IFace = TransferFace(F);
360 if (!IFace.IsNull()) Seq->Append(IFace);
365 Standard_Integer nbfaces = Seq->Length();
366 Handle(IGESData_HArray1OfIGESEntity) Tab;
368 Tab = new IGESData_HArray1OfIGESEntity(1,nbfaces);
369 for (Standard_Integer itab = 1; itab <= nbfaces; itab++) {
370 Handle(IGESData_IGESEntity) item = GetCasted(IGESData_IGESEntity, Seq->Value(itab));
371 Tab->SetValue(itab,item);
383 SetShapeResult ( start, res );