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 // File: BlockFix_UnionEdges.cxx
23 // Created: 07.12.04 15:27:30
24 // Author: Sergey KUUL
26 #include <BlockFix_UnionEdges.ixx>
28 #include <Approx_Curve3d.hxx>
29 #include <BRepAdaptor_HCompCurve.hxx>
30 #include <BRep_Builder.hxx>
31 #include <BRep_Tool.hxx>
32 #include <GC_MakeCircle.hxx>
33 #include <Geom_BSplineCurve.hxx>
34 #include <Geom_Circle.hxx>
35 #include <Geom_Curve.hxx>
36 #include <Geom_Line.hxx>
37 #include <Geom_TrimmedCurve.hxx>
38 #include <ShapeAnalysis_Edge.hxx>
39 #include <ShapeFix_Edge.hxx>
40 #include <ShapeFix_Face.hxx>
41 #include <ShapeFix_Shell.hxx>
42 #include <TColgp_SequenceOfPnt.hxx>
43 #include <TColStd_MapOfInteger.hxx>
45 #include <TopExp_Explorer.hxx>
46 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
47 #include <TopTools_IndexedMapOfShape.hxx>
48 #include <TopTools_ListOfShape.hxx>
49 #include <TopTools_MapOfShape.hxx>
50 #include <TopTools_ListIteratorOfListOfShape.hxx>
51 #include <TopTools_SequenceOfShape.hxx>
53 #include <TopoDS_Edge.hxx>
54 #include <TopoDS_Face.hxx>
55 #include <TopoDS_Shell.hxx>
56 #include <TopoDS_Solid.hxx>
57 #include <TopoDS_Vertex.hxx>
58 #include <TopoDS_Iterator.hxx>
60 #include "utilities.h"
62 //=======================================================================
63 //function : BlockFix_UnionEdges()
64 //purpose : Constructor
65 //=======================================================================
67 BlockFix_UnionEdges::BlockFix_UnionEdges ( )
72 //=======================================================================
73 //function : MergeEdges
75 //=======================================================================
76 static Standard_Boolean MergeEdges(const TopTools_SequenceOfShape& SeqEdges,
77 const TopoDS_Face& aFace,
78 const Standard_Real Tol,
81 // make chain for union
83 ShapeAnalysis_Edge sae;
84 TopoDS_Edge FirstE = TopoDS::Edge(SeqEdges.Value(1));
85 TopoDS_Edge LastE = FirstE;
86 TopoDS_Vertex VF = sae.FirstVertex(FirstE);
87 TopoDS_Vertex VL = sae.LastVertex(LastE);
88 TopTools_SequenceOfShape aChain;
89 aChain.Append(FirstE);
90 TColStd_MapOfInteger IndUsedEdges;
93 for(j=2; j<=SeqEdges.Length(); j++) {
94 for(Standard_Integer k=2; k<=SeqEdges.Length(); k++) {
95 if(IndUsedEdges.Contains(k)) continue;
96 TopoDS_Edge edge = TopoDS::Edge(SeqEdges.Value(k));
97 TopoDS_Vertex VF2 = sae.FirstVertex(edge);
98 TopoDS_Vertex VL2 = sae.LastVertex(edge);
99 if(sae.FirstVertex(edge).IsSame(VL)) {
102 VL = sae.LastVertex(LastE);
105 else if(sae.LastVertex(edge).IsSame(VF)) {
106 aChain.Prepend(edge);
108 VF = sae.FirstVertex(FirstE);
113 if(aChain.Length()<SeqEdges.Length()) {
114 MESSAGE ("can not create correct chain...");
115 return Standard_False;
117 // union edges in chain
118 // first step: union lines and circles
120 Standard_Real fp1,lp1,fp2,lp2;
121 for(j=1; j<aChain.Length(); j++) {
122 TopoDS_Edge edge1 = TopoDS::Edge(aChain.Value(j));
123 Handle(Geom_Curve) c3d1 = BRep_Tool::Curve(edge1,Loc,fp1,lp1);
124 if(c3d1.IsNull()) break;
125 while(c3d1->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
126 Handle(Geom_TrimmedCurve) tc =
127 Handle(Geom_TrimmedCurve)::DownCast(c3d1);
128 c3d1 = tc->BasisCurve();
130 TopoDS_Edge edge2 = TopoDS::Edge(aChain.Value(j+1));
131 Handle(Geom_Curve) c3d2 = BRep_Tool::Curve(edge2,Loc,fp2,lp2);
132 if(c3d2.IsNull()) break;
133 while(c3d2->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
134 Handle(Geom_TrimmedCurve) tc =
135 Handle(Geom_TrimmedCurve)::DownCast(c3d2);
136 c3d2 = tc->BasisCurve();
138 if( c3d1->IsKind(STANDARD_TYPE(Geom_Line)) && c3d2->IsKind(STANDARD_TYPE(Geom_Line)) ) {
140 Handle(Geom_Line) L1 = Handle(Geom_Line)::DownCast(c3d1);
141 Handle(Geom_Line) L2 = Handle(Geom_Line)::DownCast(c3d2);
142 gp_Dir Dir1 = L1->Position().Direction();
143 gp_Dir Dir2 = L2->Position().Direction();
144 if(!Dir1.IsEqual(Dir2,Precision::Angular())) continue;
145 // can union lines => create new edge
146 TopoDS_Vertex V1 = sae.FirstVertex(edge1);
147 gp_Pnt PV1 = BRep_Tool::Pnt(V1);
148 TopoDS_Vertex V2 = sae.LastVertex(edge2);
149 gp_Pnt PV2 = BRep_Tool::Pnt(V2);
151 Handle(Geom_Line) L = new Geom_Line(gp_Ax1(PV1,Vec));
152 Standard_Real dist = PV1.Distance(PV2);
153 Handle(Geom_TrimmedCurve) tc = new Geom_TrimmedCurve(L,0.0,dist);
155 B.MakeEdge (E,tc,Precision::Confusion());
156 B.Add (E,V1); B.Add (E,V2);
157 B.UpdateVertex(V1, 0., E, 0.);
158 B.UpdateVertex(V2, dist, E, 0.);
160 sfe.FixAddPCurve(E,aFace,Standard_False);
161 sfe.FixSameParameter(E);
163 aChain.SetValue(j,E);
166 if( c3d1->IsKind(STANDARD_TYPE(Geom_Circle)) && c3d2->IsKind(STANDARD_TYPE(Geom_Circle)) ) {
168 Handle(Geom_Circle) C1 = Handle(Geom_Circle)::DownCast(c3d1);
169 Handle(Geom_Circle) C2 = Handle(Geom_Circle)::DownCast(c3d2);
170 gp_Pnt P01 = C1->Location();
171 gp_Pnt P02 = C2->Location();
172 if (P01.Distance(P02) > Precision::Confusion()) continue;
173 // can union circles => create new edge
174 TopoDS_Vertex V1 = sae.FirstVertex(edge1);
175 gp_Pnt PV1 = BRep_Tool::Pnt(V1);
176 TopoDS_Vertex V2 = sae.LastVertex(edge2);
177 gp_Pnt PV2 = BRep_Tool::Pnt(V2);
178 TopoDS_Vertex VM = sae.LastVertex(edge1);
179 gp_Pnt PVM = BRep_Tool::Pnt(VM);
180 GC_MakeCircle MC (PV1,PVM,PV2);
181 Handle(Geom_Circle) C = MC.Value();
183 if (!MC.IsDone() || C.IsNull()) {
184 // jfa for Mantis issue 0020228
185 if (PV1.Distance(PV2) > Precision::Confusion()) continue;
188 B.MakeEdge (E,C,Precision::Confusion());
193 gp_Pnt P0 = C->Location();
194 gp_Dir D1(gp_Vec(P0,PV1));
195 gp_Dir D2(gp_Vec(P0,PV2));
196 Standard_Real fpar = C->XAxis().Direction().Angle(D1);
197 Standard_Real lpar = C->XAxis().Direction().Angle(D2);
198 Handle(Geom_TrimmedCurve) tc = new Geom_TrimmedCurve(C,fpar,lpar);
199 B.MakeEdge (E,tc,Precision::Confusion());
202 B.UpdateVertex(V1, fpar, E, 0.);
203 B.UpdateVertex(V2, lpar, E, 0.);
206 sfe.FixAddPCurve(E,aFace,Standard_False);
207 sfe.FixSameParameter(E);
209 aChain.SetValue(j,E);
213 if (j < aChain.Length()) {
214 MESSAGE ("null curve3d in edge...");
215 return Standard_False;
217 if (aChain.Length() > 1) {
218 // second step: union edges with various curves
219 // skl for bug 0020052 from Mantis: perform such unions
220 // only if curves are bspline or bezier
221 bool NeedUnion = true;
222 for(j=1; j<=aChain.Length(); j++) {
223 TopoDS_Edge edge = TopoDS::Edge(aChain.Value(j));
224 Handle(Geom_Curve) c3d = BRep_Tool::Curve(edge,Loc,fp1,lp1);
225 if(c3d.IsNull()) continue;
226 while(c3d->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
227 Handle(Geom_TrimmedCurve) tc =
228 Handle(Geom_TrimmedCurve)::DownCast(c3d);
229 c3d = tc->BasisCurve();
231 if( ( c3d->IsKind(STANDARD_TYPE(Geom_BSplineCurve)) ||
232 c3d->IsKind(STANDARD_TYPE(Geom_BezierCurve)) ) ) continue;
237 MESSAGE ("can not make analitical union => make approximation");
240 for(j=1; j<=aChain.Length(); j++) {
241 TopoDS_Edge edge = TopoDS::Edge(aChain.Value(j));
244 Handle(BRepAdaptor_HCompCurve) Adapt = new BRepAdaptor_HCompCurve(W);
245 Approx_Curve3d Conv(Adapt,Tol,GeomAbs_C1,9,1000);
246 Handle(Geom_BSplineCurve) bc = Conv.Curve();
248 B.MakeEdge (E,bc,Precision::Confusion());
251 aChain.SetValue(1,E);
254 MESSAGE ("can not make approximation for such types of curves");
255 return Standard_False;
259 anEdge = TopoDS::Edge(aChain.Value(1));
260 return Standard_True;
264 //=======================================================================
267 //=======================================================================
269 TopoDS_Shape BlockFix_UnionEdges::Perform(const TopoDS_Shape& Shape,
270 const Standard_Real Tol)
272 myContext = new ShapeBuild_ReShape;
274 TopoDS_Shape aResult = myContext->Apply(Shape);
276 // processing each solid
277 TopExp_Explorer exps;
278 for(exps.Init(Shape, TopAbs_SOLID); exps.More(); exps.Next()) {
279 TopoDS_Solid aSolid = TopoDS::Solid(exps.Current());
281 TopTools_IndexedMapOfShape ChangedFaces;
283 // creating map of edge faces
284 TopTools_IndexedDataMapOfShapeListOfShape aMapEdgeFaces;
285 TopExp::MapShapesAndAncestors(aSolid, TopAbs_EDGE, TopAbs_FACE, aMapEdgeFaces);
287 Handle(ShapeBuild_ReShape) aContext = new ShapeBuild_ReShape;
288 TopoDS_Shape aRes = aSolid;
289 aRes = aContext->Apply(aSolid);
291 // processing each face
293 for(exp.Init(aRes, TopAbs_FACE); exp.More(); exp.Next()) {
295 TopoDS::Face(aContext->Apply(exp.Current().Oriented(TopAbs_FORWARD)));
296 TopTools_IndexedDataMapOfShapeListOfShape aMapFacesEdges;
298 for(TopExp_Explorer expe(aFace,TopAbs_EDGE); expe.More(); expe.Next()) {
299 TopoDS_Edge edge = TopoDS::Edge(expe.Current());
300 if(!aMapEdgeFaces.Contains(edge)) continue;
301 const TopTools_ListOfShape& aList = aMapEdgeFaces.FindFromKey(edge);
302 TopTools_ListIteratorOfListOfShape anIter(aList);
303 for( ; anIter.More(); anIter.Next()) {
304 TopoDS_Face face = TopoDS::Face(anIter.Value());
305 TopoDS_Face face1 = TopoDS::Face(aContext->Apply(anIter.Value()));
306 if(face1.IsSame(aFace)) continue;
307 if(aMapFacesEdges.Contains(face)) {
308 aMapFacesEdges.ChangeFromKey(face).Append(edge);
311 TopTools_ListOfShape ListEdges;
312 ListEdges.Append(edge);
313 aMapFacesEdges.Add(face,ListEdges);
318 for(Standard_Integer i=1; i<=aMapFacesEdges.Extent(); i++) {
319 const TopTools_ListOfShape& ListEdges = aMapFacesEdges.FindFromIndex(i);
320 TopTools_SequenceOfShape SeqEdges;
321 TopTools_ListIteratorOfListOfShape anIter(ListEdges);
322 for( ; anIter.More(); anIter.Next()) {
323 SeqEdges.Append(anIter.Value());
325 if(SeqEdges.Length()==1) continue;
327 if( MergeEdges(SeqEdges,aFace,Tol,E) ) {
328 // now we have only one edge - aChain.Value(1)
329 // we have to replace old ListEdges with this new edge
330 aContext->Replace(SeqEdges(1),E);
331 for(Standard_Integer j=2; j<=SeqEdges.Length(); j++) {
332 aContext->Remove(SeqEdges(j));
334 TopoDS_Face tmpF = TopoDS::Face(exp.Current());
335 if( !ChangedFaces.Contains(tmpF) )
336 ChangedFaces.Add(tmpF);
337 tmpF = TopoDS::Face(aMapFacesEdges.FindKey(i));
338 if( !ChangedFaces.Contains(tmpF) )
339 ChangedFaces.Add(tmpF);
343 } // end processing each face
345 // fix changed faces and replace them in the local context
346 for(Standard_Integer i=1; i<=ChangedFaces.Extent(); i++) {
347 TopoDS_Face aFace = TopoDS::Face(aContext->Apply(ChangedFaces.FindKey(i)));
348 Handle(ShapeFix_Face) sff = new ShapeFix_Face(aFace);
349 sff->SetContext(myContext);
350 sff->SetPrecision(myTolerance);
351 sff->SetMinTolerance(myTolerance);
352 sff->SetMaxTolerance(Max(1.,myTolerance*1000.));
354 aContext->Replace(aFace,sff->Face());
357 if(ChangedFaces.Extent()>0) {
358 // fix changed shell and replace it in the local context
359 TopoDS_Shape aRes1 = aContext->Apply(aRes);
360 TopExp_Explorer expsh;
361 for(expsh.Init(aRes1, TopAbs_SHELL); expsh.More(); expsh.Next()) {
362 TopoDS_Shell aShell = TopoDS::Shell(expsh.Current());
363 Handle(ShapeFix_Shell) sfsh = new ShapeFix_Shell;
364 sfsh->FixFaceOrientation(aShell);
365 aContext->Replace(aShell,sfsh->Shell());
367 TopoDS_Shape aRes2 = aContext->Apply(aRes1);
368 // put new solid into global context
369 myContext->Replace(aSolid,aRes2);
372 } // end processing each solid
374 aResult = myContext->Apply(Shape);