1 // Copyright (C) 2007-2015 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, or (at your option) any later version.
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 #include <HYDROData_TopoCurve.h>
25 #include <Approx_Curve3d.hxx>
26 #include <BRep_Builder.hxx>
27 #include <BRepAdaptor_Curve.hxx>
28 #include <BRepAdaptor_HCurve.hxx>
29 #include <BRepBuilderAPI_MakeEdge.hxx>
30 #include <Extrema_ExtCC.hxx>
31 #include <Extrema_ExtPC.hxx>
32 #include <GeomAPI_Interpolate.hxx>
33 #include <Geom_BSplineCurve.hxx>
34 #include <Precision.hxx>
35 #include <ShapeAnalysis_TransferParametersProj.hxx>
36 #include <ShapeBuild_Edge.hxx>
37 #include <TColgp_Array1OfVec.hxx>
38 #include <TColgp_HArray1OfPnt.hxx>
39 #include <TColStd_HArray1OfBoolean.hxx>
40 #include <TopExp_Explorer.hxx>
42 #include <TopoDS_Wire.hxx>
43 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
44 #include <TopTools_ListOfShape.hxx>
46 //! The type is intended to traverse the container
47 //! either from the begin to the end or vice versa.
48 template<typename ContainerType, typename IteratorType>
52 IteratorType myIterator; //!< The iterator.
53 IteratorType myIteratorLimit; //!< The iterator limit.
55 //! The pointer to the method to traverse the next item.
56 IteratorType& (IteratorType::*myNext)();
61 const ContainerType& theContainer,
62 const bool theIsForward)
66 myIterator = theContainer.begin();
67 myIteratorLimit = theContainer.end();
68 myNext = &IteratorType::operator++;
72 myIterator = --theContainer.end();
73 myIteratorLimit = --theContainer.begin();
74 myNext = &IteratorType::operator--;
78 //! Returna 'true' if the container contains not yet traversed item.
81 return myIterator != myIteratorLimit;
84 //! Traverses to the next item.
85 IteratorType& operator ++()
87 return (myIterator.*myNext)();
90 //! Returns the iterator.
91 IteratorType& operator *() {return myIterator;}
94 // Inserts the value after the position.
95 template<typename ItemType> static void InsertAfter(
96 const typename std::list<ItemType>::iterator& thePosition,
97 const ItemType& theValue,
98 std::list<ItemType>& theList)
100 typename std::list<ItemType>::iterator aEIt2 = thePosition;
101 if (++aEIt2 != theList.end())
103 theList.insert(aEIt2, theValue);
107 theList.push_back(theValue);
111 // Converts the curve to a smooth cubic B-spline using the deflection.
112 static Handle(Geom_BSplineCurve) BSpline(
113 const BRepAdaptor_Curve& theCurve, const double theDeflection)
115 Handle(BRepAdaptor_HCurve) aCurve = new BRepAdaptor_HCurve(theCurve);
116 Approx_Curve3d aConverter(aCurve, theDeflection, GeomAbs_C1, 4, 3);
117 Handle(Geom_BSplineCurve) aBSpline;
118 return aConverter.HasResult() ? aConverter.Curve() : aBSpline;
121 // Replaces the vertex of the edge considering the edge orientation.
122 static TopoDS_Edge ReplaceVertex(
123 const TopoDS_Edge& theEdge, const bool theIsEndVertex)
125 TopoDS_Vertex aVertices[] = {
126 TopExp::FirstVertex(theEdge, Standard_True),
127 TopExp::LastVertex(theEdge, Standard_True)};
128 aVertices[theIsEndVertex ? 1 : 0].EmptyCopy();
129 TopoDS_Edge aNewEdge = TopoDS::Edge(theEdge.Oriented(TopAbs_FORWARD));
131 ShapeBuild_Edge().CopyReplaceVertices(aNewEdge, aVertices[0], aVertices[1]);
132 aNewEdge.Orientation(theEdge.Orientation());
136 // Projects the point to the curve.
137 static double ProjectPointToCurve(
138 const gp_XYZ& thePoint,
139 const Adaptor3d_Curve& theCurve,
140 double& theParameter)
142 // Calculate the nearest curve internal extremum.
143 Extrema_ExtPC aAlgo(thePoint, theCurve);
145 double aMinSqDist = DBL_MAX;
148 const int aECount = aAlgo.NbExt();
149 for (int aEN = 1; aEN <= aECount; ++aEN)
151 const gp_XYZ& aP = aAlgo.Point(aEN).Value().XYZ();
152 const double aSqDist = (thePoint - aP).SquareModulus();
153 if (aMinSqDist > aSqDist)
155 aMinSqDist = aSqDist;
161 // Calculate the nearest curve end extremum.
162 const double aParams[] =
163 {theCurve.FirstParameter(), theCurve.LastParameter()};
164 const gp_XYZ aEnds[] =
165 {theCurve.Value(aParams[0]).XYZ(), theCurve.Value(aParams[1]).XYZ()};
166 const double aSqDists[] = {
167 (thePoint - aEnds[0]).SquareModulus(),
168 (thePoint - aEnds[1]).SquareModulus()};
169 for (int aEI = 0; aEI < 2; ++aEI)
171 if (aMinSqDist > aSqDists[aEI])
173 aMinSqDist = aSqDists[aEI];
180 theParameter = aParams[-aMinEN];
184 const Extrema_POnCurv& aPOnC = aAlgo.Point(aMinEN);
185 const gp_XYZ& aP = aPOnC.Value().XYZ();
186 theParameter = aPOnC.Parameter();
187 for (int aEI = 0; aEI < 2; ++aEI)
189 if (Abs(theParameter - aParams[aEI]) < Precision::PConfusion() ||
190 (aP - aEnds[aEI]).SquareModulus() < Precision::SquareConfusion())
192 theParameter = aParams[aEI];
198 // Projects the point to the edge.
199 static double ProjectPointToEdge(
200 const gp_XYZ& thePoint, const TopoDS_Edge& theEdge, double& theParameter)
202 return ProjectPointToCurve(thePoint, BRepAdaptor_Curve(theEdge), theParameter);
205 // Adds the parameter to the curve parameter list.
206 static int AddParameter(
207 const Adaptor3d_Curve& theCurve,
208 const double theParameter,
209 std::list<double>& theParameters)
211 // Check the coincidence.
212 std::list<double> aEndParams;
213 aEndParams.push_back(theCurve.FirstParameter());
214 aEndParams.push_back(theCurve.LastParameter());
215 std::list<double>* aParams[] = {&theParameters, &aEndParams};
216 const gp_XYZ aPoint = theCurve.Value(theParameter).XYZ();
217 for (int aLI = 0; aLI < 2; ++aLI)
219 std::list<double>::iterator aPIt = aParams[aLI]->begin();
220 std::list<double>::iterator aLastPIt = aParams[aLI]->end();
221 for (int aPI = 0; aPIt != aLastPIt; ++aPI, ++aPIt)
223 const double aParam = *aPIt;
224 if (Abs(theParameter - aParam) < Precision::PConfusion() ||
225 (theCurve.Value(aParam).XYZ() - aPoint).SquareModulus() <=
226 Precision::SquareConfusion())
233 theParameters.push_front(aEndParams.front());
237 theParameters.push_back(aEndParams.back());
246 // Calculate the position to insert.
247 std::list<double>::iterator aPIt = theParameters.begin();
248 std::list<double>::iterator aLastPIt = theParameters.end();
249 if (aPIt != aLastPIt && *aPIt < theParameter)
251 for (++aPIt; aPIt != aLastPIt && *aPIt < theParameter; ++aPIt);
252 if (aPIt != aLastPIt)
254 theParameters.insert(aPIt, theParameter);
258 theParameters.push_back(theParameter);
263 theParameters.push_front(theParameter);
268 // Intersects the first curve by the second one and
269 // adds the intersection parameters to the ordered list.
270 static int IntersectCurve(
271 const Adaptor3d_Curve& theCurve1,
272 const Adaptor3d_Curve& theCurve2,
273 std::list<double>& theParameters)
277 const gp_XYZ aEndPs[] = {
278 theCurve2.Value(theCurve2.FirstParameter()).XYZ(),
279 theCurve2.Value(theCurve2.LastParameter()).XYZ()};
280 for (int aPI = 0; aPI < 2; ++aPI)
283 if (ProjectPointToCurve(aEndPs[aPI], theCurve1, aParameter) <=
284 Precision::SquareConfusion())
286 aIntCount += AddParameter(theCurve1, aParameter, theParameters);
290 // Process the internal extremums.
291 Extrema_ExtCC aAlgo(theCurve1, theCurve2);
294 const int aECount = aAlgo.NbExt();
295 for (int aEN = 1; aEN <= aECount; ++aEN)
297 Extrema_POnCurv aP1, aP2;
298 aAlgo.Points(aEN, aP1, aP2);
299 if (aP1.Value().SquareDistance(aP2.Value()) <=
300 Precision::SquareConfusion())
302 aIntCount += AddParameter(theCurve1, aP1.Parameter(), theParameters);
309 // Intersects the first edge by the second one and
310 // adds the intersection parameters to the ordered list.
311 static int IntersectEdge(
312 const TopoDS_Edge& theEdge1,
313 const TopoDS_Edge& theEdge2,
314 std::list<double>& theParameters)
316 BRepAdaptor_Curve aCurve1 = BRepAdaptor_Curve(theEdge1);
317 BRepAdaptor_Curve aCurve2 = BRepAdaptor_Curve(theEdge2);
318 return IntersectCurve(aCurve1, aCurve2, theParameters);
321 // Returns the curve tangent in the position: 0 - start, 1 - end.
322 static gp_XYZ Tangent(const Adaptor3d_Curve& theCurve, const int thePosition)
324 const Standard_Real aParam = (thePosition == 0) ?
325 theCurve.FirstParameter() : theCurve.LastParameter();
328 theCurve.D1(aParam, aP, aV);
329 Standard_Real aNorm = aV.Magnitude();
330 aNorm = (aNorm >= Precision::PConfusion()) ? aNorm : 0;
331 return ((1 / aNorm) * aV).XYZ();
334 // Returns the edge tangent in the position: 0 - start, 1 - end.
335 static gp_XYZ Tangent(const TopoDS_Edge& theEdge, const int thePosition)
337 BRepAdaptor_Curve aCurve(theEdge);
338 return Tangent(BRepAdaptor_Curve(theEdge), thePosition);
341 static bool Interpolate(
342 const gp_XYZ thePoint1,
343 const gp_XYZ thePoint2,
344 const gp_XYZ theTangent1,
345 const gp_XYZ theTangent2,
346 Handle(Geom_BSplineCurve)& theBSpline)
348 Handle(TColgp_HArray1OfPnt) aPs = new TColgp_HArray1OfPnt(1, 2);
349 TColgp_Array1OfVec aTs(1, 2);
350 Handle(TColStd_HArray1OfBoolean) aTFs = new TColStd_HArray1OfBoolean(1, 2);
351 aPs->SetValue(1, thePoint1);
352 aPs->SetValue(2, thePoint2);
353 aTs.SetValue(1, theTangent1);
354 aTs.SetValue(2, theTangent2);
355 aTFs->SetValue(1, Standard_True);
356 aTFs->SetValue(2, Standard_True);
357 GeomAPI_Interpolate aInterpolator(aPs, Standard_False, 0);
358 aInterpolator.Load(aTs, aTFs, Standard_False);
359 aInterpolator.Perform();
360 const bool aResult = (aInterpolator.IsDone() == Standard_True);
363 theBSpline = aInterpolator.Curve();
368 bool HYDROData_TopoCurve::Initialize(const TopoDS_Wire& theWire)
370 // Check for nonemptiness.
372 TopTools_IndexedDataMapOfShapeListOfShape aVertexToEdges;
373 TopExp::MapShapesAndAncestors(theWire,
374 TopAbs_VERTEX, TopAbs_EDGE, aVertexToEdges);
375 const int aVCount = aVertexToEdges.Extent();
381 // Check for 1 manifoldness.
382 bool isClosed = false;
385 for (int aVN = 1; aVN <= aVCount; ++aVN)
387 const int aEdgeCount = aVertexToEdges.FindFromIndex(aVN).Extent();
397 isClosed = (aEndCount == 0);
398 if (!isClosed && aEndCount != 2)
408 for (; aVertexToEdges.FindFromIndex(aVN).Extent() == 2; ++aVN);
409 if (!aVertexToEdges.FindKey(aVN).IsEqual(TopExp::FirstVertex(
410 TopoDS::Edge(aVertexToEdges.FindFromIndex(aVN).First()), Standard_True)))
412 for (; aVertexToEdges.FindFromIndex(aVN).Extent() == 2; ++aVN);
417 TopTools_ListOfShape& aEdges = aVertexToEdges.ChangeFromIndex(1);
418 if (!aVertexToEdges.FindKey(aVN).IsEqual(
419 TopExp::FirstVertex(TopoDS::Edge(aEdges.First()), Standard_True)))
421 const TopoDS_Shape aEdge = aEdges.First();
422 aEdges.First() = aEdges.Last();
423 aEdges.Last() = aEdge;
427 // Calculate the edge order.
428 TopTools_ListOfShape* aEdges = &aVertexToEdges.ChangeFromIndex(aVN);
429 while (!aEdges->IsEmpty())
431 const TopoDS_Edge aEdge = TopoDS::Edge(aEdges->First());
432 aEdges->RemoveFirst();
433 myEdges.push_back(aEdge);
434 int aVN2 = aVertexToEdges.FindIndex(TopExp::FirstVertex(aEdge));
437 aVN2 = aVertexToEdges.FindIndex(TopExp::LastVertex(aEdge));
441 aEdges = &aVertexToEdges.ChangeFromIndex(aVN2);
442 const TopoDS_Edge aEdge2 = TopoDS::Edge(aEdges->First());
443 if (aEdge2.IsEqual(aEdge))
445 aEdges->RemoveFirst();
450 aEdges->Append(aEdge2);
454 // Check for connectedness and free vertex.
455 return aVCount - myEdges.size() == (isClosed ? 0 : 1);
458 TopoDS_Wire HYDROData_TopoCurve::Wire() const
461 BRep_Builder aBulder;
462 aBulder.MakeWire(aWire);
463 std::list<TopoDS_Edge>::const_iterator aEItLast = myEdges.end();
464 std::list<TopoDS_Edge>::const_iterator aEIt = myEdges.begin();
465 for (; aEIt != aEItLast; ++aEIt)
467 aBulder.Add(aWire, *aEIt);
472 void HYDROData_TopoCurve::Cut(
473 const std::list<TopoDS_Edge>::iterator& theEdgePosition,
474 const double theParameter,
475 HYDROData_TopoCurve& theCurve)
478 std::list<TopoDS_Edge>::iterator aFirstEIt = myEdges.begin();
479 std::list<TopoDS_Edge>::iterator aEIt = aFirstEIt;
480 for (; aEIt != theEdgePosition; ++aEIt);
483 TopoDS_Edge aEdge = *aEIt;
484 BRepAdaptor_Curve aCurve(aEdge);
486 const double aEdgeEndParams[] =
487 {aCurve.FirstParameter(), aCurve.LastParameter()};
488 if (Abs(theParameter - aEdgeEndParams[0]) < Precision::PConfusion())
492 else if (Abs(theParameter - aEdgeEndParams[1]) < Precision::PConfusion())
496 const TopAbs_Orientation aOrient = aEdge.Orientation();
497 if (aOrient == TopAbs_REVERSED)
501 const bool isClosed = IsClosed();
504 aEdge.Orientation(TopAbs_FORWARD);
505 TopoDS_Vertex aSplitV1, aSplitV2;
506 BRep_Builder().MakeVertex(
507 aSplitV1, aCurve.Value(theParameter), Precision::Confusion());
508 BRep_Builder().MakeVertex(
509 aSplitV2, aCurve.Value(theParameter), Precision::Confusion());
510 TopoDS_Edge aEParts[] = {
511 ShapeBuild_Edge().CopyReplaceVertices(aEdge, TopoDS_Vertex(),
512 TopoDS::Vertex(aSplitV1.Oriented(TopAbs_REVERSED))),
513 ShapeBuild_Edge().CopyReplaceVertices(aEdge, aSplitV2, TopoDS_Vertex())};
514 ShapeBuild_Edge().CopyPCurves(aEParts[0], aEdge);
515 ShapeBuild_Edge().CopyPCurves(aEParts[1], aEdge);
516 BRep_Builder().SameRange(aEParts[0], Standard_False);
517 BRep_Builder().SameRange(aEParts[1], Standard_False);
518 BRep_Builder().SameParameter(aEParts[0], Standard_False);
519 BRep_Builder().SameParameter(aEParts[1], Standard_False);
520 ShapeAnalysis_TransferParametersProj aSATPP(aEdge, TopoDS_Face());
521 aSATPP.SetMaxTolerance(Precision::Confusion());
522 aSATPP.TransferRange(aEParts[0],
523 aEdgeEndParams[0], theParameter, Standard_False);
524 aSATPP.TransferRange(aEParts[1],
525 theParameter, aEdgeEndParams[1], Standard_False);
526 aEParts[0].Orientation(aOrient);
527 aEParts[1].Orientation(aOrient);
529 const int aFirstPI = (aOrient != TopAbs_REVERSED) ? 0 : 1;
530 *aEIt = aEParts[aFirstPI];
531 InsertAfter(aEIt, aEParts[1 - aFirstPI], myEdges);
536 TopoDS_Edge aNewEdge = ReplaceVertex(aEdge, (aParamI == 0) ? false : true);
544 // Calculate the curve parts.
545 std::list<TopoDS_Edge>::iterator aLastEIt = myEdges.end();
546 if (aEIt != aFirstEIt && aEIt != aLastEIt)
548 std::list<TopoDS_Edge>* aEdges = !isClosed ? &theCurve.myEdges : &myEdges;
549 aEdges->splice(aEdges->begin(), myEdges, aEIt, aLastEIt);
553 void HYDROData_TopoCurve::Cut(
554 const std::list<TopoDS_Edge>::const_iterator& theEdgePosition,
555 const double theParameter,
556 HYDROData_TopoCurve& theCurve1,
557 HYDROData_TopoCurve& theCurve2) const
560 std::list<TopoDS_Edge>::const_iterator aEPos = myEdges.begin();
561 std::list<TopoDS_Edge>::iterator aEPos1 = theCurve1.myEdges.begin();
562 for (; aEPos != theEdgePosition; ++aEPos1, ++aEPos);
563 theCurve1.Cut(aEPos1, theParameter, theCurve2);
566 void HYDROData_TopoCurve::Cut(
567 const std::deque<std::list<double> >& theParameters,
568 std::deque<HYDROData_TopoCurve>& theCurves) const
570 HYDROData_TopoCurve aCurves[2];
573 std::list<TopoDS_Edge>::iterator aEIt = aCurves[0].myEdges.begin();
574 std::deque<std::list<double> >::const_iterator aPLIt = theParameters.begin();
575 for (std::deque<std::list<double> >::const_iterator aLastPLIt =
576 theParameters.end(); aPLIt != aLastPLIt; ++aPLIt)
578 TopoDS_Edge aNextEdge;
580 std::list<TopoDS_Edge>::iterator aNextEIt = aEIt;
582 if (aNextEIt != aCurves[aCI].myEdges.end())
584 aNextEdge = *aNextEIt;
588 for (Iterator<std::list<double>, std::list<double>::const_iterator> aPIt(
589 *aPLIt, (aEIt->Orientation() != TopAbs_REVERSED)); aPIt.More(); ++aPIt)
591 const int aCI1 = 1 - aCI;
592 aCurves[aCI].Cut(aEIt, **aPIt, aCurves[aCI1]);
593 if (!aCurves[aCI1].IsEmpty())
595 theCurves.push_back(HYDROData_TopoCurve());
596 theCurves.back().append(aCurves[aCI]);
597 aEIt = aCurves[aCI1].myEdges.begin();
602 aEIt = aCurves[aCI].myEdges.begin();
606 if (!aNextEdge.IsNull() && !aEIt->IsEqual(aNextEdge))
611 theCurves.push_back(aCurves[aCI]);
614 double HYDROData_TopoCurve::Project(
615 const gp_XYZ& thePoint,
616 std::list<TopoDS_Edge>::const_iterator& theEdgeIterator,
617 double& theParameter) const
619 double aMinSqDist = DBL_MAX;
620 std::list<TopoDS_Edge>::const_iterator aEIt = myEdges.begin();
621 std::list<TopoDS_Edge>::const_iterator aLastEIt = myEdges.end();
622 for (; aEIt != aLastEIt; ++aEIt)
625 const double aSqDist = ProjectPointToEdge(thePoint, *aEIt, aParam);
626 if (aMinSqDist > aSqDist)
628 aMinSqDist = aSqDist;
629 theEdgeIterator = aEIt;
630 theParameter = aParam;
636 int HYDROData_TopoCurve::Intersect(
637 const TopoDS_Wire& theWire,
638 std::deque<std::list<double> >& theParameters) const
641 theParameters.resize(myEdges.size());
642 std::list<TopoDS_Edge>::const_iterator aEIt = myEdges.begin();
643 std::list<TopoDS_Edge>::const_iterator aLastEIt = myEdges.end();
644 std::deque<std::list<double> >::iterator aPIt = theParameters.begin();
645 for (; aEIt != aLastEIt; ++aPIt, ++aEIt)
647 const TopoDS_Edge& aEdge = *aEIt;
648 std::list<double>& aParams = *aPIt;
649 TopExp_Explorer aEIt2(theWire, TopAbs_EDGE);
650 for (; aEIt2.More(); aEIt2.Next())
652 aIntCount += IntersectEdge(aEdge,TopoDS::Edge(aEIt2.Current()), aParams);
658 void HYDROData_TopoCurve::CloseCurve()
660 const TopoDS_Vertex aVertex = TopoDS::Vertex(TopExp::LastVertex(
661 myEdges.back(), Standard_True).Oriented(TopAbs_FORWARD));
662 TopoDS_Edge& aEdge = myEdges.front();
663 const TopoDS_Edge aForwardEdge = TopoDS::Edge(aEdge.Oriented(TopAbs_FORWARD));
664 aEdge = TopoDS::Edge(ShapeBuild_Edge().CopyReplaceVertices(
665 aForwardEdge, aVertex, TopoDS_Vertex()).Oriented(aEdge.Orientation()));
668 void HYDROData_TopoCurve::Merge(
669 const int thePosition, HYDROData_TopoCurve& theCurve)
671 if (thePosition == 0)
673 const TopoDS_Vertex aVertex = TopoDS::Vertex(TopExp::LastVertex(
674 theCurve.myEdges.back(), Standard_True).Oriented(TopAbs_FORWARD));
675 TopoDS_Edge& aEdge = myEdges.front();
676 aEdge = TopoDS::Edge(ShapeBuild_Edge().CopyReplaceVertices(
677 TopoDS::Edge(aEdge.Oriented(TopAbs_FORWARD)), aVertex, TopoDS_Vertex()).
678 Oriented(aEdge.Orientation()));
683 const TopoDS_Vertex aVertex = TopoDS::Vertex(TopExp::FirstVertex(
684 theCurve.myEdges.front(), Standard_True).Oriented(TopAbs_REVERSED));
685 TopoDS_Edge& aEdge = myEdges.back();
686 aEdge = TopoDS::Edge(ShapeBuild_Edge().CopyReplaceVertices(
687 TopoDS::Edge(aEdge.Oriented(TopAbs_FORWARD)), TopoDS_Vertex(), aVertex).
688 Oriented(aEdge.Orientation()));
693 void HYDROData_TopoCurve::Merge(
694 const double theTolerance, std::deque<HYDROData_TopoCurve>& theCurves)
696 // Process the curve closeness.
697 const double aSqTol = theTolerance * theTolerance;
698 const gp_XYZ aPs[] = {
699 BRep_Tool::Pnt(TopExp::FirstVertex(myEdges.front(), Standard_True)).XYZ(),
700 BRep_Tool::Pnt(TopExp::LastVertex(myEdges.back(), Standard_True)).XYZ()};
701 bool isClosed = IsClosed();
702 if (!isClosed && (aPs[0] - aPs[1]).SquareModulus() <= aSqTol)
708 // Find the merge places.
709 HYDROData_TopoCurve* aCurves[] = {NULL, NULL};
713 std::deque<HYDROData_TopoCurve>::iterator aCIt = theCurves.begin();
714 std::deque<HYDROData_TopoCurve>::iterator aLastCIt = theCurves.end();
715 for (; aCIt != aLastCIt; ++aCIt)
717 HYDROData_TopoCurve& aCurve = *aCIt;
718 if (aCurve.IsEmpty() || aCurve.IsClosed())
723 const gp_XYZ aP1 = BRep_Tool::Pnt(
724 TopExp::FirstVertex(aCurve.myEdges.front(), Standard_True)).XYZ();
725 if (aCurves[0] == NULL && (aPs[1] - aP1).SquareModulus() <= aSqTol)
727 aCurves[0] = &aCurve;
730 const gp_XYZ aP2 = BRep_Tool::Pnt(
731 TopExp::LastVertex(aCurve.myEdges.back(), Standard_True)).XYZ();
732 if (aCurves[1] == NULL && (aPs[0] - aP2).SquareModulus() <= aSqTol)
734 aCurves[1] = &aCurve;
735 aOrder = (aCurves[0] == NULL) ? 1 : 0;
740 if (aCurves[0] == NULL && aCurves[1] == NULL)
742 theCurves.push_back(HYDROData_TopoCurve());
743 theCurves.back().append(*this);
745 else if (aCurves[1] == NULL)
747 aCurves[0]->Merge(0, *this);
749 else if (aCurves[0] == NULL)
751 aCurves[1]->Merge(1, *this);
755 aCurves[aOrder]->Merge(aOrder, *this);
756 if (aCurves[0] != aCurves[1])
758 aCurves[aOrder]->Merge(aOrder, *aCurves[1 - aOrder]);
762 aCurves[aOrder]->CloseCurve();
767 bool HYDROData_TopoCurve::Connect(
768 const Standard_Real theTolerance, std::deque<HYDROData_TopoCurve>& theCurves)
770 const double aSqTol = theTolerance * theTolerance;
771 const gp_XYZ aPs[] = {
772 BRep_Tool::Pnt(TopExp::FirstVertex(myEdges.front(), Standard_True)).XYZ(),
773 BRep_Tool::Pnt(TopExp::LastVertex(myEdges.back(), Standard_True)).XYZ()};
774 bool isClosed = IsClosed();
775 if (!isClosed && (aPs[0] - aPs[1]).SquareModulus() <= aSqTol)
783 std::deque<HYDROData_TopoCurve>::iterator aCIt = theCurves.begin();
784 std::deque<HYDROData_TopoCurve>::iterator aLastCIt = theCurves.end();
785 for (; aCIt != aLastCIt; ++aCIt)
787 HYDROData_TopoCurve& aCurve2 = *aCIt;
788 if (aCurve2.IsEmpty() || aCurve2.IsClosed())
793 const TopoDS_Edge* aEdges2[] =
794 {&aCurve2.myEdges.front(), &aCurve2.myEdges.back()};
795 const gp_XYZ aPs2[] = {
796 BRep_Tool::Pnt(TopExp::FirstVertex(*aEdges2[0], Standard_True)).XYZ(),
797 BRep_Tool::Pnt(TopExp::LastVertex(*aEdges2[1], Standard_True)).XYZ()};
798 const double aSqDists[] =
799 {(aPs[1] - aPs2[0]).SquareModulus(), (aPs[0] - aPs2[1]).SquareModulus()};
800 const int aOrder = (aSqDists[0] <= aSqDists[1]) ? 0 : 1;
801 if (aSqDists[aOrder] > aSqTol)
803 const TopoDS_Edge& aEdge =
804 (aOrder == 0) ? myEdges.back() : myEdges.front();
805 const gp_XYZ aPs3[] = {aPs[1 - aOrder], aPs2[aOrder]};
807 {Tangent(aEdge, 1 - aOrder), Tangent(*aEdges2[aOrder], aOrder)};
808 Handle(Geom_BSplineCurve) aBSpline;
809 if (!Interpolate(aPs3[aOrder], aPs3[1 - aOrder],
810 aTs[aOrder], aTs[1 - aOrder], aBSpline))
815 HYDROData_TopoCurve aECurve = BRepBuilderAPI_MakeEdge(aBSpline).Edge();
816 aCurve2.Merge(aOrder, aECurve);
818 aCurve2.Merge(aOrder, *this);
819 if (aSqDists[1 - aOrder] <= aSqTol)
821 aCurve2.CloseCurve();
827 theCurves.push_back(HYDROData_TopoCurve());
828 theCurves.back().append(*this);
832 int HYDROData_TopoCurve::BSplinePiecewiseCurve(
833 const double theDeflection, HYDROData_TopoCurve& theCurve) const
836 std::list<TopoDS_Edge>::const_iterator aLastEIt = myEdges.end();
837 std::list<TopoDS_Edge>::const_iterator aEIt = myEdges.begin();
838 TopoDS_Vertex aEndVertex;
839 TopoDS_Edge aPrevEdge;
840 for (; aEIt != aLastEIt; ++aEIt)
842 Handle(Geom_BSplineCurve) aBSpline =
843 ::BSpline(BRepAdaptor_Curve(*aEIt), theDeflection);
844 if (aBSpline.IsNull())
849 if (aEIt->Orientation() == TopAbs_REVERSED)
855 BRep_Builder().MakeEdge(aEdge, aBSpline, Precision::Confusion());
856 TopoDS_Vertex aVertex;
857 BRep_Builder().MakeVertex(aVertex,
858 aBSpline->Value(aBSpline->FirstParameter()), Precision::Confusion());
859 if (!aPrevEdge.IsNull())
861 BRep_Builder().Add(aPrevEdge, aVertex.Oriented(TopAbs_REVERSED));
865 aEndVertex = aVertex;
867 BRep_Builder().Add(aEdge, aVertex);
868 theCurve.myEdges.push_back(aEdge);
869 aPieceCount += aBSpline->NbKnots() - 1;
875 BRepAdaptor_Curve aCurve(aPrevEdge);
876 BRep_Builder().MakeVertex(aEndVertex,
877 aCurve.Value(aCurve.LastParameter()), Precision::Confusion());
879 BRep_Builder().Add(aPrevEdge, aEndVertex.Oriented(TopAbs_REVERSED));
883 bool HYDROData_TopoCurve::ValuesInKnots(std::list<gp_XYZ>& theValues) const
885 std::list<TopoDS_Edge>::const_iterator aLastEIt = myEdges.end();
886 std::list<TopoDS_Edge>::const_iterator aEIt = myEdges.begin();
887 for (; aEIt != aLastEIt; ++aEIt)
889 Handle(Geom_BSplineCurve) aCurve;
891 TopLoc_Location aLoc;
893 aCurve = Handle(Geom_BSplineCurve)::
894 DownCast(BRep_Tool::Curve(*aEIt, aLoc, aParams[0], aParams[1]));
895 if (!aLoc.IsIdentity() || aEIt->Orientation() != TopAbs_FORWARD ||
902 for (int aNbKnots = aCurve->NbKnots(), aKN = 1; aKN < aNbKnots; ++aKN)
904 theValues.push_back(aCurve->Value(aCurve->Knot(aKN)).XYZ());
910 TopLoc_Location aLoc;
912 Handle(Geom_Curve) aCurve =
913 BRep_Tool::Curve(myEdges.back(), aLoc, aParams[0], aParams[1]);
914 theValues.push_back(aCurve->Value(aParams[1]).XYZ());