1 // Copyright (C) 2007-2010 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
23 // File: BlockFix_UnionEdges.cxx
24 // Created: 07.12.04 15:27:30
25 // Author: Sergey KUUL
27 #include <BlockFix_UnionEdges.ixx>
29 #include <Approx_Curve3d.hxx>
30 #include <BRepAdaptor_HCompCurve.hxx>
31 #include <BRep_Builder.hxx>
32 #include <BRep_Tool.hxx>
33 #include <GC_MakeCircle.hxx>
34 #include <Geom_BSplineCurve.hxx>
35 #include <Geom_Circle.hxx>
36 #include <Geom_Curve.hxx>
37 #include <Geom_Line.hxx>
38 #include <Geom_TrimmedCurve.hxx>
39 #include <ShapeAnalysis_Edge.hxx>
40 #include <ShapeFix_Edge.hxx>
41 #include <ShapeFix_Face.hxx>
42 #include <ShapeFix_Shell.hxx>
43 #include <TColgp_SequenceOfPnt.hxx>
44 #include <TColStd_MapOfInteger.hxx>
46 #include <TopExp_Explorer.hxx>
47 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
48 #include <TopTools_IndexedMapOfShape.hxx>
49 #include <TopTools_ListOfShape.hxx>
50 #include <TopTools_MapOfShape.hxx>
51 #include <TopTools_ListIteratorOfListOfShape.hxx>
52 #include <TopTools_SequenceOfShape.hxx>
54 #include <TopoDS_Edge.hxx>
55 #include <TopoDS_Face.hxx>
56 #include <TopoDS_Shell.hxx>
57 #include <TopoDS_Solid.hxx>
58 #include <TopoDS_Vertex.hxx>
59 #include <TopoDS_Iterator.hxx>
61 #include "utilities.h"
63 //=======================================================================
64 //function : BlockFix_UnionEdges()
65 //purpose : Constructor
66 //=======================================================================
68 BlockFix_UnionEdges::BlockFix_UnionEdges ( )
73 //=======================================================================
74 //function : MergeEdges
76 //=======================================================================
77 static Standard_Boolean MergeEdges(const TopTools_SequenceOfShape& SeqEdges,
78 const TopoDS_Face& aFace,
79 const Standard_Real Tol,
82 // make chain for union
84 ShapeAnalysis_Edge sae;
85 TopoDS_Edge FirstE = TopoDS::Edge(SeqEdges.Value(1));
86 TopoDS_Edge LastE = FirstE;
87 TopoDS_Vertex VF = sae.FirstVertex(FirstE);
88 TopoDS_Vertex VL = sae.LastVertex(LastE);
89 TopTools_SequenceOfShape aChain;
90 aChain.Append(FirstE);
91 TColStd_MapOfInteger IndUsedEdges;
94 for(j=2; j<=SeqEdges.Length(); j++) {
95 for(Standard_Integer k=2; k<=SeqEdges.Length(); k++) {
96 if(IndUsedEdges.Contains(k)) continue;
97 TopoDS_Edge edge = TopoDS::Edge(SeqEdges.Value(k));
98 TopoDS_Vertex VF2 = sae.FirstVertex(edge);
99 TopoDS_Vertex VL2 = sae.LastVertex(edge);
100 if(sae.FirstVertex(edge).IsSame(VL)) {
103 VL = sae.LastVertex(LastE);
106 else if(sae.LastVertex(edge).IsSame(VF)) {
107 aChain.Prepend(edge);
109 VF = sae.FirstVertex(FirstE);
114 if(aChain.Length()<SeqEdges.Length()) {
115 MESSAGE ("can not create correct chain...");
116 return Standard_False;
118 // union edges in chain
119 // first step: union lines and circles
121 Standard_Real fp1,lp1,fp2,lp2;
122 for(j=1; j<aChain.Length(); j++) {
123 TopoDS_Edge edge1 = TopoDS::Edge(aChain.Value(j));
124 Handle(Geom_Curve) c3d1 = BRep_Tool::Curve(edge1,Loc,fp1,lp1);
125 if(c3d1.IsNull()) break;
126 while(c3d1->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
127 Handle(Geom_TrimmedCurve) tc =
128 Handle(Geom_TrimmedCurve)::DownCast(c3d1);
129 c3d1 = tc->BasisCurve();
131 TopoDS_Edge edge2 = TopoDS::Edge(aChain.Value(j+1));
132 Handle(Geom_Curve) c3d2 = BRep_Tool::Curve(edge2,Loc,fp2,lp2);
133 if(c3d2.IsNull()) break;
134 while(c3d2->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
135 Handle(Geom_TrimmedCurve) tc =
136 Handle(Geom_TrimmedCurve)::DownCast(c3d2);
137 c3d2 = tc->BasisCurve();
139 if( c3d1->IsKind(STANDARD_TYPE(Geom_Line)) && c3d2->IsKind(STANDARD_TYPE(Geom_Line)) ) {
141 Handle(Geom_Line) L1 = Handle(Geom_Line)::DownCast(c3d1);
142 Handle(Geom_Line) L2 = Handle(Geom_Line)::DownCast(c3d2);
143 gp_Dir Dir1 = L1->Position().Direction();
144 gp_Dir Dir2 = L2->Position().Direction();
145 //if(!Dir1.IsEqual(Dir2,Precision::Angular())) {
146 //if(!Dir1.IsParallel(Dir2,Precision::Angular())) {
147 if(!Dir1.IsParallel(Dir2,Tol)) {
150 // can union lines => create new edge
151 TopoDS_Vertex V1 = sae.FirstVertex(edge1);
152 gp_Pnt PV1 = BRep_Tool::Pnt(V1);
153 TopoDS_Vertex V2 = sae.LastVertex(edge2);
154 gp_Pnt PV2 = BRep_Tool::Pnt(V2);
156 Handle(Geom_Line) L = new Geom_Line(gp_Ax1(PV1,Vec));
157 Standard_Real dist = PV1.Distance(PV2);
158 Handle(Geom_TrimmedCurve) tc = new Geom_TrimmedCurve(L,0.0,dist);
160 B.MakeEdge (E,tc,Precision::Confusion());
161 B.Add (E,V1); B.Add (E,V2);
162 B.UpdateVertex(V1, 0., E, 0.);
163 B.UpdateVertex(V2, dist, E, 0.);
165 //sfe.FixAddPCurve(E,aFace,Standard_False);
166 //sfe.FixSameParameter(E);
168 aChain.SetValue(j,E);
171 if( c3d1->IsKind(STANDARD_TYPE(Geom_Circle)) && c3d2->IsKind(STANDARD_TYPE(Geom_Circle)) ) {
173 Handle(Geom_Circle) C1 = Handle(Geom_Circle)::DownCast(c3d1);
174 Handle(Geom_Circle) C2 = Handle(Geom_Circle)::DownCast(c3d2);
175 gp_Pnt P01 = C1->Location();
176 gp_Pnt P02 = C2->Location();
177 if (P01.Distance(P02) > Precision::Confusion()) continue;
178 // can union circles => create new edge
179 TopoDS_Vertex V1 = sae.FirstVertex(edge1);
180 gp_Pnt PV1 = BRep_Tool::Pnt(V1);
181 TopoDS_Vertex V2 = sae.LastVertex(edge2);
182 gp_Pnt PV2 = BRep_Tool::Pnt(V2);
183 TopoDS_Vertex VM = sae.LastVertex(edge1);
184 gp_Pnt PVM = BRep_Tool::Pnt(VM);
185 GC_MakeCircle MC (PV1,PVM,PV2);
186 Handle(Geom_Circle) C = MC.Value();
188 if (!MC.IsDone() || C.IsNull()) {
189 // jfa for Mantis issue 0020228
190 if (PV1.Distance(PV2) > Precision::Confusion()) continue;
193 B.MakeEdge (E,C,Precision::Confusion());
198 gp_Pnt P0 = C->Location();
199 gp_Dir D1(gp_Vec(P0,PV1));
200 gp_Dir D2(gp_Vec(P0,PV2));
201 Standard_Real fpar = C->XAxis().Direction().Angle(D1);
202 if(fabs(fpar)>Precision::Confusion()) {
204 gp_Dir ND = C->XAxis().Direction().Crossed(D1);
205 if(ND.IsOpposite(C->Axis().Direction(),Precision::Confusion())) {
209 Standard_Real lpar = C->XAxis().Direction().Angle(D2);
210 if(fabs(lpar)>Precision::Confusion()) {
212 gp_Dir ND = C->XAxis().Direction().Crossed(D2);
213 if(ND.IsOpposite(C->Axis().Direction(),Precision::Confusion())) {
217 if(lpar<fpar) lpar += 2*PI;
218 Handle(Geom_TrimmedCurve) tc = new Geom_TrimmedCurve(C,fpar,lpar);
219 B.MakeEdge (E,tc,Precision::Confusion());
222 B.UpdateVertex(V1, fpar, E, 0.);
223 B.UpdateVertex(V2, lpar, E, 0.);
226 aChain.SetValue(j,E);
230 if (j < aChain.Length()) {
231 MESSAGE ("null curve3d in edge...");
232 return Standard_False;
234 if (aChain.Length() > 1) {
235 // second step: union edges with various curves
236 // skl for bug 0020052 from Mantis: perform such unions
237 // only if curves are bspline or bezier
238 bool NeedUnion = true;
239 for(j=1; j<=aChain.Length(); j++) {
240 TopoDS_Edge edge = TopoDS::Edge(aChain.Value(j));
241 Handle(Geom_Curve) c3d = BRep_Tool::Curve(edge,Loc,fp1,lp1);
242 if(c3d.IsNull()) continue;
243 while(c3d->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
244 Handle(Geom_TrimmedCurve) tc =
245 Handle(Geom_TrimmedCurve)::DownCast(c3d);
246 c3d = tc->BasisCurve();
248 if( ( c3d->IsKind(STANDARD_TYPE(Geom_BSplineCurve)) ||
249 c3d->IsKind(STANDARD_TYPE(Geom_BezierCurve)) ) ) continue;
254 MESSAGE ("can not make analitical union => make approximation");
257 for(j=1; j<=aChain.Length(); j++) {
258 TopoDS_Edge edge = TopoDS::Edge(aChain.Value(j));
261 Handle(BRepAdaptor_HCompCurve) Adapt = new BRepAdaptor_HCompCurve(W);
262 Approx_Curve3d Conv(Adapt,Tol,GeomAbs_C1,9,1000);
263 Handle(Geom_BSplineCurve) bc = Conv.Curve();
265 B.MakeEdge (E,bc,Precision::Confusion());
268 aChain.SetValue(1,E);
271 MESSAGE ("can not make approximation for such types of curves");
272 return Standard_False;
276 anEdge = TopoDS::Edge(aChain.Value(1));
277 return Standard_True;
281 //=======================================================================
284 //=======================================================================
286 TopoDS_Shape BlockFix_UnionEdges::Perform(const TopoDS_Shape& Shape,
287 const Standard_Real Tol)
289 myContext = new ShapeBuild_ReShape;
291 TopoDS_Shape aResult = myContext->Apply(Shape);
293 // processing each solid
294 TopExp_Explorer exps;
295 for(exps.Init(Shape, TopAbs_SOLID); exps.More(); exps.Next()) {
296 TopoDS_Solid aSolid = TopoDS::Solid(exps.Current());
298 TopTools_IndexedMapOfShape ChangedFaces;
300 // creating map of edge faces
301 TopTools_IndexedDataMapOfShapeListOfShape aMapEdgeFaces;
302 TopExp::MapShapesAndAncestors(aSolid, TopAbs_EDGE, TopAbs_FACE, aMapEdgeFaces);
304 Handle(ShapeBuild_ReShape) aContext = new ShapeBuild_ReShape;
305 TopoDS_Shape aRes = aSolid;
306 aRes = aContext->Apply(aSolid);
308 // processing each face
310 for(exp.Init(aRes, TopAbs_FACE); exp.More(); exp.Next()) {
312 TopoDS::Face(aContext->Apply(exp.Current().Oriented(TopAbs_FORWARD)));
313 TopTools_IndexedDataMapOfShapeListOfShape aMapFacesEdges;
315 for(TopExp_Explorer expe(aFace,TopAbs_EDGE); expe.More(); expe.Next()) {
316 TopoDS_Edge edge = TopoDS::Edge(expe.Current());
317 if(!aMapEdgeFaces.Contains(edge)) continue;
318 const TopTools_ListOfShape& aList = aMapEdgeFaces.FindFromKey(edge);
319 TopTools_ListIteratorOfListOfShape anIter(aList);
320 for( ; anIter.More(); anIter.Next()) {
321 TopoDS_Face face = TopoDS::Face(anIter.Value());
322 TopoDS_Face face1 = TopoDS::Face(aContext->Apply(anIter.Value()));
323 if(face1.IsSame(aFace)) continue;
324 if(aMapFacesEdges.Contains(face)) {
325 aMapFacesEdges.ChangeFromKey(face).Append(edge);
328 TopTools_ListOfShape ListEdges;
329 ListEdges.Append(edge);
330 aMapFacesEdges.Add(face,ListEdges);
335 for(Standard_Integer i=1; i<=aMapFacesEdges.Extent(); i++) {
336 const TopTools_ListOfShape& ListEdges = aMapFacesEdges.FindFromIndex(i);
337 TopTools_SequenceOfShape SeqEdges;
338 TopTools_ListIteratorOfListOfShape anIter(ListEdges);
339 for( ; anIter.More(); anIter.Next()) {
340 SeqEdges.Append(anIter.Value());
342 if(SeqEdges.Length()==1) continue;
344 if( MergeEdges(SeqEdges,aFace,Tol,E) ) {
345 // now we have only one edge - aChain.Value(1)
346 // we have to replace old ListEdges with this new edge
347 aContext->Replace(SeqEdges(1),E);
348 for(Standard_Integer j=2; j<=SeqEdges.Length(); j++) {
349 aContext->Remove(SeqEdges(j));
351 TopoDS_Face tmpF = TopoDS::Face(exp.Current());
352 if( !ChangedFaces.Contains(tmpF) )
353 ChangedFaces.Add(tmpF);
354 tmpF = TopoDS::Face(aMapFacesEdges.FindKey(i));
355 if( !ChangedFaces.Contains(tmpF) )
356 ChangedFaces.Add(tmpF);
360 } // end processing each face
362 // fix changed faces and replace them in the local context
363 for(Standard_Integer i=1; i<=ChangedFaces.Extent(); i++) {
364 TopoDS_Face aFace = TopoDS::Face(aContext->Apply(ChangedFaces.FindKey(i)));
365 Handle(ShapeFix_Face) sff = new ShapeFix_Face(aFace);
366 sff->SetContext(myContext);
367 sff->SetPrecision(myTolerance);
368 sff->SetMinTolerance(myTolerance);
369 sff->SetMaxTolerance(Max(1.,myTolerance*1000.));
371 aContext->Replace(aFace,sff->Face());
374 if(ChangedFaces.Extent()>0) {
375 // fix changed shell and replace it in the local context
376 TopoDS_Shape aRes1 = aContext->Apply(aRes);
377 TopExp_Explorer expsh;
378 for(expsh.Init(aRes1, TopAbs_SHELL); expsh.More(); expsh.Next()) {
379 TopoDS_Shell aShell = TopoDS::Shell(expsh.Current());
380 Handle(ShapeFix_Shell) sfsh = new ShapeFix_Shell;
381 sfsh->FixFaceOrientation(aShell);
382 aContext->Replace(aShell,sfsh->Shell());
384 TopoDS_Shape aRes2 = aContext->Apply(aRes1);
385 // put new solid into global context
386 myContext->Replace(aSolid,aRes2);
389 } // end processing each solid
391 aResult = myContext->Apply(Shape);