// Created on: 1993-12-15 // Created by: Remi LEQUETTE // Copyright (c) 1993-1999 Matra Datavision // Copyright (c) 1999-2014 OPEN CASCADE SAS // // This file is part of Open CASCADE Technology software library. // // This library is free software; you can redistribute it and/or modify it under // the terms of the GNU Lesser General Public License version 2.1 as published // by the Free Software Foundation, with special exception defined in the file // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT // distribution for complete text of the license and disclaimer of any warranty. // // Alternatively, this file may be used under the terms of Open CASCADE // commercial license or contractual agreement. //pmn 26/09/97 Add parameters of approximation in BuildCurve3d // Modified by skv - Thu Jun 3 12:39:19 2004 OCC5898 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include // TODO - not thread-safe static variables static Standard_Real thePrecision = Precision::Confusion(); static Handle(Geom_Plane) thePlane; static void InternalUpdateTolerances(const TopoDS_Shape& theOldShape, const Standard_Boolean IsVerifyTolerance, const Standard_Boolean IsMutableInput, BRepTools_ReShape& theReshaper); //======================================================================= // function: BRepLib_ComparePoints // purpose: implementation of IsLess() function for two points //======================================================================= struct BRepLib_ComparePoints { bool operator()(const gp_Pnt& theP1, const gp_Pnt& theP2) { for (Standard_Integer i = 1; i <= 3; ++i) { if (theP1.Coord(i) < theP2.Coord(i)) { return Standard_True; } else if (theP1.Coord(i) > theP2.Coord(i)) { return Standard_False; } } return Standard_False; } }; //======================================================================= //function : Precision //purpose : //======================================================================= void BRepLib::Precision(const Standard_Real P) { thePrecision = P; } //======================================================================= //function : Precision //purpose : //======================================================================= Standard_Real BRepLib::Precision() { return thePrecision; } //======================================================================= //function : Plane //purpose : //======================================================================= void BRepLib::Plane(const Handle(Geom_Plane)& P) { thePlane = P; } //======================================================================= //function : Plane //purpose : //======================================================================= const Handle(Geom_Plane)& BRepLib::Plane() { if (thePlane.IsNull()) thePlane = new Geom_Plane(gp::XOY()); return thePlane; } //======================================================================= //function : CheckSameRange //purpose : //======================================================================= Standard_Boolean BRepLib::CheckSameRange(const TopoDS_Edge& AnEdge, const Standard_Real Tolerance) { Standard_Boolean IsSameRange = Standard_True, first_time_in = Standard_True ; BRep_ListIteratorOfListOfCurveRepresentation an_Iterator ((*((Handle(BRep_TEdge)*)&AnEdge.TShape()))->ChangeCurves()); Standard_Real first, last; Standard_Real current_first =0., current_last =0. ; Handle(BRep_GCurve) geometric_representation_ptr ; while (IsSameRange && an_Iterator.More()) { geometric_representation_ptr = Handle(BRep_GCurve)::DownCast(an_Iterator.Value()); if (!geometric_representation_ptr.IsNull()) { first = geometric_representation_ptr->First(); last = geometric_representation_ptr->Last(); if (first_time_in ) { current_first = first ; current_last = last ; first_time_in = Standard_False ; } else { IsSameRange = (Abs(current_first - first) <= Tolerance) && (Abs(current_last -last) <= Tolerance ) ; } } an_Iterator.Next() ; } return IsSameRange ; } //======================================================================= //function : SameRange //purpose : //======================================================================= void BRepLib::SameRange(const TopoDS_Edge& AnEdge, const Standard_Real Tolerance) { BRep_ListIteratorOfListOfCurveRepresentation an_Iterator ((*((Handle(BRep_TEdge)*)&AnEdge.TShape()))->ChangeCurves()); Handle(Geom2d_Curve) Curve2dPtr, Curve2dPtr2, NewCurve2dPtr, NewCurve2dPtr2; TopLoc_Location LocalLoc ; Standard_Boolean first_time_in = Standard_True, has_curve, has_closed_curve ; Handle(BRep_GCurve) geometric_representation_ptr ; Standard_Real first, current_first, last, current_last ; const Handle(Geom_Curve) C = BRep_Tool::Curve(AnEdge, LocalLoc, current_first, current_last); if (!C.IsNull()) { first_time_in = Standard_False ; } while (an_Iterator.More()) { geometric_representation_ptr = Handle(BRep_GCurve)::DownCast(an_Iterator.Value()); if (! geometric_representation_ptr.IsNull()) { has_closed_curve = has_curve = Standard_False ; first = geometric_representation_ptr->First(); last = geometric_representation_ptr->Last(); if (geometric_representation_ptr->IsCurveOnSurface()) { Curve2dPtr = geometric_representation_ptr->PCurve() ; has_curve = Standard_True ; } if (geometric_representation_ptr->IsCurveOnClosedSurface()) { Curve2dPtr2 = geometric_representation_ptr->PCurve2() ; has_closed_curve = Standard_True ; } if (has_curve || has_closed_curve) { if (first_time_in) { current_first = first ; current_last = last ; first_time_in = Standard_False ; } if (Abs(first - current_first) > Precision::Confusion() || Abs(last - current_last) > Precision::Confusion() ) { if (has_curve) { GeomLib::SameRange(Tolerance, Curve2dPtr, geometric_representation_ptr->First(), geometric_representation_ptr->Last(), current_first, current_last, NewCurve2dPtr); geometric_representation_ptr->PCurve(NewCurve2dPtr) ; } if (has_closed_curve) { GeomLib::SameRange(Tolerance, Curve2dPtr2, geometric_representation_ptr->First(), geometric_representation_ptr->Last(), current_first, current_last, NewCurve2dPtr2); geometric_representation_ptr->PCurve2(NewCurve2dPtr2) ; } } } } an_Iterator.Next() ; } BRep_Builder B; B.Range(TopoDS::Edge(AnEdge), current_first, current_last) ; B.SameRange(AnEdge, Standard_True) ; } //======================================================================= //function : EvaluateMaxSegment //purpose : return MaxSegment to pass in approximation, if MaxSegment==0 provided //======================================================================= static Standard_Integer evaluateMaxSegment(const Standard_Integer aMaxSegment, const Adaptor3d_CurveOnSurface& aCurveOnSurface) { if (aMaxSegment != 0) return aMaxSegment; Handle(Adaptor3d_HSurface) aSurf = aCurveOnSurface.GetSurface(); Handle(Adaptor2d_HCurve2d) aCurv2d = aCurveOnSurface.GetCurve(); Standard_Real aNbSKnots = 0, aNbC2dKnots = 0; if (aSurf->GetType() == GeomAbs_BSplineSurface) { Handle(Geom_BSplineSurface) aBSpline = aSurf->BSpline(); aNbSKnots = Max(aBSpline->NbUKnots(), aBSpline->NbVKnots()); } if (aCurv2d->GetType() == GeomAbs_BSplineCurve) { aNbC2dKnots = aCurv2d->NbKnots(); } Standard_Integer aReturn = (Standard_Integer) ( 30 + Max(aNbSKnots, aNbC2dKnots) ) ; return aReturn; } //======================================================================= //function : BuildCurve3d //purpose : //======================================================================= Standard_Boolean BRepLib::BuildCurve3d(const TopoDS_Edge& AnEdge, const Standard_Real Tolerance, const GeomAbs_Shape Continuity, const Standard_Integer MaxDegree, const Standard_Integer MaxSegment) { Standard_Integer //ErrorCode, // ReturnCode = 0, ii, // num_knots, jj; TopLoc_Location LocalLoc,L[2],LC; Standard_Real f,l,fc,lc, first[2], last[2], tolerance, max_deviation, average_deviation ; Handle(Geom2d_Curve) Curve2dPtr, Curve2dArray[2] ; Handle(Geom_Surface) SurfacePtr, SurfaceArray[2] ; Standard_Integer not_done ; // if the edge has a 3d curve returns true const Handle(Geom_Curve) C = BRep_Tool::Curve(AnEdge,LocalLoc,f,l); if (!C.IsNull()) return Standard_True; // // this should not exists but UpdateEdge makes funny things // if the edge is not same range // if (! CheckSameRange(AnEdge, Precision::Confusion())) { SameRange(AnEdge, Tolerance) ; } // search a curve on a plane Handle(Geom_Surface) S; Handle(Geom2d_Curve) PC; Standard_Integer i = 0; Handle(Geom_Plane) P; not_done = 1 ; while (not_done) { i++; BRep_Tool::CurveOnSurface(AnEdge,PC,S,LocalLoc,f,l,i); Handle(Geom_RectangularTrimmedSurface) RT = Handle(Geom_RectangularTrimmedSurface)::DownCast(S); if ( RT.IsNull()) { P = Handle(Geom_Plane)::DownCast(S); } else { P = Handle(Geom_Plane)::DownCast(RT->BasisSurface()); } not_done = ! (S.IsNull() || !P.IsNull()) ; } if (! P.IsNull()) { // compute the 3d curve gp_Ax2 axes = P->Position().Ax2(); Handle(Geom_Curve) C3d = GeomLib::To3d(axes,PC); if (C3d.IsNull()) return Standard_False; // update the edge Standard_Real First, Last; BRep_Builder B; B.UpdateEdge(AnEdge,C3d,LocalLoc,0.0e0); BRep_Tool::Range(AnEdge, S, LC, First, Last); B.Range(AnEdge, First, Last); //Do not forget 3D range.(PRO6412) } else { // // compute the 3d curve using existing surface // fc = f ; lc = l ; if (!BRep_Tool::Degenerated(AnEdge)) { jj = 0 ; for (ii = 0 ; ii < 3 ; ii++ ) { BRep_Tool::CurveOnSurface(TopoDS::Edge(AnEdge), Curve2dPtr, SurfacePtr, LocalLoc, fc, lc, ii) ; if (!Curve2dPtr.IsNull() && jj < 2){ Curve2dArray[jj] = Curve2dPtr ; SurfaceArray[jj] = SurfacePtr ; L[jj] = LocalLoc ; first[jj] = fc ; last[jj] = lc ; jj += 1 ; } } f = first[0] ; l = last[0] ; Curve2dPtr = Curve2dArray[0] ; SurfacePtr = SurfaceArray[0] ; Geom2dAdaptor_Curve AnAdaptor3dCurve2d (Curve2dPtr, f, l) ; GeomAdaptor_Surface AnAdaptor3dSurface (SurfacePtr) ; Handle(Geom2dAdaptor_HCurve) AnAdaptor3dCurve2dPtr = new Geom2dAdaptor_HCurve(AnAdaptor3dCurve2d) ; Handle(GeomAdaptor_HSurface) AnAdaptor3dSurfacePtr = new GeomAdaptor_HSurface (AnAdaptor3dSurface) ; Adaptor3d_CurveOnSurface CurveOnSurface( AnAdaptor3dCurve2dPtr, AnAdaptor3dSurfacePtr) ; Handle(Geom_Curve) NewCurvePtr ; GeomLib::BuildCurve3d(Tolerance, CurveOnSurface, f, l, NewCurvePtr, max_deviation, average_deviation, Continuity, MaxDegree, evaluateMaxSegment(MaxSegment,CurveOnSurface)) ; BRep_Builder B; tolerance = BRep_Tool::Tolerance(AnEdge) ; //Patch //max_deviation = Max(tolerance, max_deviation) ; max_deviation = Max( tolerance, Tolerance ); if (NewCurvePtr.IsNull()) return Standard_False; B.UpdateEdge(TopoDS::Edge(AnEdge), NewCurvePtr, L[0], max_deviation) ; if (jj == 1 ) { // // if there is only one curve on surface attached to the edge // than it can be qualified sameparameter // B.SameParameter(TopoDS::Edge(AnEdge), Standard_True) ; } } else { return Standard_False ; } } return Standard_True; } //======================================================================= //function : BuildCurves3d //purpose : //======================================================================= Standard_Boolean BRepLib::BuildCurves3d(const TopoDS_Shape& S) { return BRepLib::BuildCurves3d(S, 1.0e-5) ; } //======================================================================= //function : BuildCurves3d //purpose : //======================================================================= Standard_Boolean BRepLib::BuildCurves3d(const TopoDS_Shape& S, const Standard_Real Tolerance, const GeomAbs_Shape Continuity, const Standard_Integer MaxDegree, const Standard_Integer MaxSegment) { Standard_Boolean boolean_value, ok = Standard_True; TopTools_MapOfShape a_counter ; TopExp_Explorer ex(S,TopAbs_EDGE); while (ex.More()) { if (a_counter.Add(ex.Current())) { boolean_value = BuildCurve3d(TopoDS::Edge(ex.Current()), Tolerance, Continuity, MaxDegree, MaxSegment); ok = ok && boolean_value ; } ex.Next(); } return ok; } //======================================================================= //function : UpdateEdgeTolerance //purpose : //======================================================================= Standard_Boolean BRepLib::UpdateEdgeTol(const TopoDS_Edge& AnEdge, const Standard_Real MinToleranceRequested, const Standard_Real MaxToleranceToCheck) { Standard_Integer curve_on_surface_index, curve_index, not_done, has_closed_curve, has_curve, jj, ii, geom_reference_curve_flag = 0, max_sampling_points = 90, min_sampling_points = 30 ; Standard_Real factor = 100.0e0, // sampling_array[2], safe_factor = 1.4e0, current_last, current_first, max_distance, coded_edge_tolerance, edge_tolerance = 0.0e0 ; Handle(TColStd_HArray1OfReal) parameters_ptr ; Handle(BRep_GCurve) geometric_representation_ptr ; if (BRep_Tool::Degenerated(AnEdge)) return Standard_False ; coded_edge_tolerance = BRep_Tool::Tolerance(AnEdge) ; if (coded_edge_tolerance > MaxToleranceToCheck) return Standard_False ; const Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&AnEdge.TShape()); BRep_ListOfCurveRepresentation& list_curve_rep = TE->ChangeCurves() ; BRep_ListIteratorOfListOfCurveRepresentation an_iterator(list_curve_rep), second_iterator(list_curve_rep) ; Handle(Geom2d_Curve) curve2d_ptr, new_curve2d_ptr; Handle(Geom_Surface) surface_ptr ; TopLoc_Location local_location ; GCPnts_QuasiUniformDeflection a_sampler ; GeomAdaptor_Curve geom_reference_curve ; Adaptor3d_CurveOnSurface curve_on_surface_reference ; Handle(Geom_Curve) C = BRep_Tool::Curve(AnEdge, local_location, current_first, current_last); curve_on_surface_index = -1 ; if (!C.IsNull()) { if (! local_location.IsIdentity()) { C = Handle(Geom_Curve):: DownCast(C-> Transformed(local_location.Transformation()) ) ; } geom_reference_curve.Load(C) ; geom_reference_curve_flag = 1 ; a_sampler.Initialize(geom_reference_curve, MinToleranceRequested * factor, current_first, current_last) ; } else { not_done = 1 ; curve_on_surface_index = 0 ; while (not_done && an_iterator.More()) { geometric_representation_ptr = Handle(BRep_GCurve)::DownCast(second_iterator.Value()); if (!geometric_representation_ptr.IsNull() && geometric_representation_ptr->IsCurveOnSurface()) { curve2d_ptr = geometric_representation_ptr->PCurve() ; local_location = geometric_representation_ptr->Location() ; current_first = geometric_representation_ptr->First(); //first = geometric_representation_ptr->First(); current_last = geometric_representation_ptr->Last(); // must be inverted // if (! local_location.IsIdentity() ) { surface_ptr = Handle(Geom_Surface):: DownCast( geometric_representation_ptr->Surface()-> Transformed(local_location.Transformation()) ) ; } else { surface_ptr = geometric_representation_ptr->Surface() ; } not_done = 0 ; } curve_on_surface_index += 1 ; } Geom2dAdaptor_Curve AnAdaptor3dCurve2d (curve2d_ptr) ; GeomAdaptor_Surface AnAdaptor3dSurface (surface_ptr) ; Handle(Geom2dAdaptor_HCurve) AnAdaptor3dCurve2dPtr = new Geom2dAdaptor_HCurve(AnAdaptor3dCurve2d) ; Handle(GeomAdaptor_HSurface) AnAdaptor3dSurfacePtr = new GeomAdaptor_HSurface (AnAdaptor3dSurface) ; curve_on_surface_reference.Load (AnAdaptor3dCurve2dPtr, AnAdaptor3dSurfacePtr); a_sampler.Initialize(curve_on_surface_reference, MinToleranceRequested * factor, current_first, current_last) ; } TColStd_Array1OfReal sampling_parameters(1,a_sampler.NbPoints()) ; for (ii = 1 ; ii <= a_sampler.NbPoints() ; ii++) { sampling_parameters(ii) = a_sampler.Parameter(ii) ; } if (a_sampler.NbPoints() < min_sampling_points) { GeomLib::DensifyArray1OfReal(min_sampling_points, sampling_parameters, parameters_ptr) ; } else if (a_sampler.NbPoints() > max_sampling_points) { GeomLib::RemovePointsFromArray(max_sampling_points, sampling_parameters, parameters_ptr) ; } else { jj = 1 ; parameters_ptr = new TColStd_HArray1OfReal(1,sampling_parameters.Length()) ; for (ii = sampling_parameters.Lower() ; ii <= sampling_parameters.Upper() ; ii++) { parameters_ptr->ChangeArray1()(jj) = sampling_parameters(ii) ; jj +=1 ; } } curve_index = 0 ; while (second_iterator.More()) { geometric_representation_ptr = Handle(BRep_GCurve)::DownCast(second_iterator.Value()); if (! geometric_representation_ptr.IsNull() && curve_index != curve_on_surface_index) { has_closed_curve = has_curve = Standard_False ; // first = geometric_representation_ptr->First(); // last = geometric_representation_ptr->Last(); local_location = geometric_representation_ptr->Location() ; if (geometric_representation_ptr->IsCurveOnSurface()) { curve2d_ptr = geometric_representation_ptr->PCurve() ; has_curve = Standard_True ; } if (geometric_representation_ptr->IsCurveOnClosedSurface()) { curve2d_ptr = geometric_representation_ptr->PCurve2() ; has_closed_curve = Standard_True ; } if (has_curve || has_closed_curve) { if (! local_location.IsIdentity() ) { surface_ptr = Handle(Geom_Surface):: DownCast( geometric_representation_ptr->Surface()-> Transformed(local_location.Transformation()) ) ; } else { surface_ptr = geometric_representation_ptr->Surface() ; } Geom2dAdaptor_Curve an_adaptor_curve2d (curve2d_ptr) ; GeomAdaptor_Surface an_adaptor_surface(surface_ptr) ; Handle(Geom2dAdaptor_HCurve) an_adaptor_curve2d_ptr = new Geom2dAdaptor_HCurve(an_adaptor_curve2d) ; Handle(GeomAdaptor_HSurface) an_adaptor_surface_ptr = new GeomAdaptor_HSurface (an_adaptor_surface) ; Adaptor3d_CurveOnSurface a_curve_on_surface(an_adaptor_curve2d_ptr, an_adaptor_surface_ptr) ; if (BRep_Tool::SameParameter(AnEdge)) { GeomLib::EvalMaxParametricDistance(a_curve_on_surface, geom_reference_curve, MinToleranceRequested, parameters_ptr->Array1(), max_distance) ; } else if (geom_reference_curve_flag) { GeomLib::EvalMaxDistanceAlongParameter(a_curve_on_surface, geom_reference_curve, MinToleranceRequested, parameters_ptr->Array1(), max_distance) ; } else { GeomLib::EvalMaxDistanceAlongParameter(a_curve_on_surface, curve_on_surface_reference, MinToleranceRequested, parameters_ptr->Array1(), max_distance) ; } max_distance *= safe_factor ; edge_tolerance = Max(max_distance, edge_tolerance) ; } } curve_index += 1 ; second_iterator.Next() ; } TE->Tolerance(edge_tolerance); return Standard_True ; } //======================================================================= //function : UpdateEdgeTolerance //purpose : //======================================================================= Standard_Boolean BRepLib::UpdateEdgeTolerance(const TopoDS_Shape& S, const Standard_Real MinToleranceRequested, const Standard_Real MaxToleranceToCheck) { TopExp_Explorer ex(S,TopAbs_EDGE); TopTools_MapOfShape a_counter ; Standard_Boolean return_status = Standard_False, local_flag ; while (ex.More()) { if (a_counter.Add(ex.Current())) { local_flag = BRepLib::UpdateEdgeTol(TopoDS::Edge(ex.Current()), MinToleranceRequested, MaxToleranceToCheck) ; if (local_flag && ! return_status) { return_status = Standard_True ; } } ex.Next(); } return return_status ; } //======================================================================= //function : GetEdgeTol //purpose : //======================================================================= static void GetEdgeTol(const TopoDS_Edge& theEdge, const TopoDS_Face& theFace, Standard_Real& theEdTol) { TopLoc_Location L; const Handle(Geom_Surface)& S = BRep_Tool::Surface(theFace,L); TopLoc_Location l = L.Predivided(theEdge.Location()); const Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&theEdge.TShape()); BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->Curves()); while (itcr.More()) { const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); if(cr->IsCurveOnSurface(S,l)) return; itcr.Next(); } Handle(Geom_Plane) GP; Handle(Geom_RectangularTrimmedSurface) GRTS; GRTS = Handle(Geom_RectangularTrimmedSurface)::DownCast(S); if(!GRTS.IsNull()) GP = Handle(Geom_Plane)::DownCast(GRTS->BasisSurface()); else GP = Handle(Geom_Plane)::DownCast(S); Handle(GeomAdaptor_HCurve) HC = new GeomAdaptor_HCurve(); Handle(GeomAdaptor_HSurface) HS = new GeomAdaptor_HSurface(); TopLoc_Location LC; Standard_Real First, Last; GeomAdaptor_Curve& GAC = HC->ChangeCurve(); GAC.Load(BRep_Tool::Curve(theEdge,LC,First,Last)); LC = L.Predivided(LC); if (!LC.IsIdentity()) { GP = Handle(Geom_Plane)::DownCast( GP->Transformed(LC.Transformation())); } GeomAdaptor_Surface& GAS = HS->ChangeSurface(); GAS.Load(GP); ProjLib_ProjectedCurve Proj(HS,HC); Handle(Geom2d_Curve) pc = Geom2dAdaptor::MakeCurve(Proj); gp_Pln pln = GAS.Plane(); Standard_Real d2 = 0.; Standard_Integer nn = 23; Standard_Real unsurnn = 1./nn; for(Standard_Integer i = 0; i <= nn; i++){ Standard_Real t = unsurnn*i; Standard_Real u = First*(1.-t) + Last*t; gp_Pnt Pc3d = HC->Value(u); gp_Pnt2d p2d = pc->Value(u); gp_Pnt Pcons = ElSLib::Value(p2d.X(),p2d.Y(),pln); Standard_Real eps = Max(Pc3d.XYZ().SquareModulus(), Pcons.XYZ().SquareModulus()); eps = Epsilon(eps); Standard_Real temp = Pc3d.SquareDistance(Pcons); if(temp <= eps) { temp = 0.; } if(temp > d2) d2 = temp; } d2 = 1.5*sqrt(d2); theEdTol = d2; } //======================================================================= //function : UpdTolMap //purpose : Update map ShToTol (shape to tolerance) //======================================================================= static void UpdTolMap(const TopoDS_Shape& theSh, Standard_Real theNewTol, TopTools_DataMapOfShapeReal& theShToTol) { TopAbs_ShapeEnum aSt = theSh.ShapeType(); Standard_Real aShTol; if (aSt == TopAbs_VERTEX) aShTol = BRep_Tool::Tolerance(TopoDS::Vertex(theSh)); else if (aSt == TopAbs_EDGE) aShTol = BRep_Tool::Tolerance(TopoDS::Edge(theSh)); else return; // if (theNewTol > aShTol) { const Standard_Real* anOldtol = theShToTol.Seek(theSh); if (!anOldtol) theShToTol.Bind(theSh, theNewTol); else theShToTol(theSh) = Max(*anOldtol, theNewTol); } } //======================================================================= //function : UpdShTol //purpose : Update vertices/edges/faces according to ShToTol map (create copies of necessary) //======================================================================= static void UpdShTol(const TopTools_DataMapOfShapeReal& theShToTol, const Standard_Boolean IsMutableInput, BRepTools_ReShape& theReshaper, Standard_Boolean theVForceUpdate) { BRep_Builder aB; TopTools_DataMapIteratorOfDataMapOfShapeReal SHToTolit(theShToTol); for (;SHToTolit.More();SHToTolit.Next()) { const TopoDS_Shape& aSh = SHToTolit.Key(); Standard_Real aTol = SHToTolit.Value(); // TopoDS_Shape aNsh; const TopoDS_Shape& aVsh = theReshaper.Value(aSh); Standard_Boolean UseOldSh = IsMutableInput || theReshaper.IsNewShape(aSh) || !aVsh.IsSame(aSh); if (UseOldSh) aNsh = aVsh; else { aNsh = aSh.EmptyCopied(); //add subshapes from the original shape TopoDS_Iterator sit(aSh); for (;sit.More();sit.Next()) aB.Add(aNsh, sit.Value()); // aNsh.Free(aSh.Free()); aNsh.Checked(aSh.Checked()); aNsh.Orientable(aSh.Orientable()); aNsh.Closed(aSh.Closed()); aNsh.Infinite(aSh.Infinite()); aNsh.Convex(aSh.Convex()); // } // switch (aSh.ShapeType()) { case TopAbs_FACE: { aB.UpdateFace(TopoDS::Face(aNsh), aTol); break; } case TopAbs_EDGE: { aB.UpdateEdge(TopoDS::Edge(aNsh), aTol); break; } case TopAbs_VERTEX: { const Handle(BRep_TVertex)& aTV = *((Handle(BRep_TVertex)*)&aNsh.TShape()); // if(aTV->Locked()) throw TopoDS_LockedShape("BRep_Builder::UpdateVertex"); // if (theVForceUpdate) aTV->Tolerance(aTol); else aTV->UpdateTolerance(aTol); aTV->Modified(Standard_True); break; } default: break; } // if (!UseOldSh) theReshaper.Replace(aSh, aNsh); } } //======================================================================= //function : InternalSameParameter //purpose : //======================================================================= static void InternalSameParameter(const TopoDS_Shape& theSh, BRepTools_ReShape& theReshaper, const Standard_Real theTol, const Standard_Boolean IsForced, const Standard_Boolean IsMutableInput ) { TopExp_Explorer ex(theSh,TopAbs_EDGE); TopTools_MapOfShape Done; BRep_Builder aB; TopTools_DataMapOfShapeReal aShToTol; while (ex.More()) { const TopoDS_Edge& aCE = TopoDS::Edge(ex.Current()); if (Done.Add(aCE)) { TopoDS_Edge aNE = TopoDS::Edge(theReshaper.Value(aCE)); Standard_Boolean UseOldEdge = IsMutableInput || theReshaper.IsNewShape(aCE) || !aNE.IsSame(aCE); if (IsForced && (BRep_Tool::SameRange(aCE) || BRep_Tool::SameParameter(aCE))) { if (!UseOldEdge) { aNE = TopoDS::Edge(aCE.EmptyCopied()); TopoDS_Iterator sit(aCE); for (;sit.More();sit.Next()) aB.Add(aNE, sit.Value()); theReshaper.Replace(aCE, aNE); UseOldEdge = Standard_True; } aB.SameRange(aNE, Standard_False); aB.SameParameter(aNE, Standard_False); } Standard_Real aNewTol = -1; TopoDS_Edge aResEdge = BRepLib::SameParameter(aNE, theTol, aNewTol, UseOldEdge); if (!UseOldEdge && !aResEdge.IsNull()) //NE have been empty-copied theReshaper.Replace(aNE, aResEdge); if (aNewTol > 0) { TopoDS_Vertex aV1, aV2; TopExp::Vertices(aCE,aV1,aV2); if (!aV1.IsNull()) UpdTolMap(aV1, aNewTol, aShToTol); if (!aV2.IsNull()) UpdTolMap(aV2, aNewTol, aShToTol); } } ex.Next(); } Done.Clear(); BRepAdaptor_Surface BS; for(ex.Init(theSh,TopAbs_FACE); ex.More(); ex.Next()){ const TopoDS_Face& curface = TopoDS::Face(ex.Current()); if(!Done.Add(curface)) continue; BS.Initialize(curface); if(BS.GetType() != GeomAbs_Plane) continue; TopExp_Explorer ex2; for(ex2.Init(curface,TopAbs_EDGE); ex2.More(); ex2.Next()){ const TopoDS_Edge& E = TopoDS::Edge(ex2.Current()); TopoDS_Shape aNe = theReshaper.Value(E); Standard_Real aNewEtol = -1; GetEdgeTol(TopoDS::Edge(aNe), curface, aNewEtol); if (aNewEtol >= 0) //not equal to -1 UpdTolMap(E, aNewEtol, aShToTol); } } // UpdShTol(aShToTol, IsMutableInput, theReshaper, Standard_False ); InternalUpdateTolerances(theSh, Standard_False, IsMutableInput, theReshaper ); } //================================================================ //function : SameParameter //WARNING : New spec DUB LBO 9/9/97. // Recode in the edge the best tolerance found, // for vertex extremities it is required to find something else //================================================================ void BRepLib::SameParameter(const TopoDS_Shape& S, const Standard_Real Tolerance, const Standard_Boolean forced) { BRepTools_ReShape reshaper; InternalSameParameter( S, reshaper, Tolerance, forced, Standard_True); } //======================================================================= //function : SameParameter //purpose : //======================================================================= void BRepLib::SameParameter(const TopoDS_Shape& S, BRepTools_ReShape& theReshaper, const Standard_Real Tolerance, const Standard_Boolean forced ) { InternalSameParameter( S, theReshaper, Tolerance, forced, Standard_False); } //======================================================================= //function : EvalTol //purpose : //======================================================================= static Standard_Boolean EvalTol(const Handle(Geom2d_Curve)& pc, const Handle(Geom_Surface)& s, const GeomAdaptor_Curve& gac, const Standard_Real tol, Standard_Real& tolbail) { Standard_Integer ok = 0; Standard_Real f = gac.FirstParameter(); Standard_Real l = gac.LastParameter(); Extrema_LocateExtPC Projector; Projector.Initialize(gac,f,l,tol); Standard_Real u,v; gp_Pnt p; tolbail = tol; for(Standard_Integer i = 1; i <= 5; i++){ Standard_Real t = i/6.; t = (1.-t) * f + t * l; pc->Value(t).Coord(u,v); p = s->Value(u,v); Projector.Perform(p,t); if (Projector.IsDone()) { Standard_Real dist2 = Projector.SquareDistance(); if(dist2 > tolbail * tolbail) tolbail = sqrt (dist2); ok++; } } return (ok > 2); } //======================================================================= //function : ComputeTol //purpose : //======================================================================= static Standard_Real ComputeTol(const Handle(Adaptor3d_HCurve)& c3d, const Handle(Adaptor2d_HCurve2d)& c2d, const Handle(Adaptor3d_HSurface)& surf, const Standard_Integer nbp) { TColStd_Array1OfReal dist(1,nbp+10); dist.Init(-1.); //Adaptor3d_CurveOnSurface cons(c2d,surf); Standard_Real uf = surf->FirstUParameter(), ul = surf->LastUParameter(), vf = surf->FirstVParameter(), vl = surf->LastVParameter(); Standard_Real du = 0.01 * (ul - uf), dv = 0.01 * (vl - vf); Standard_Boolean isUPeriodic = surf->IsUPeriodic(), isVPeriodic = surf->IsVPeriodic(); Standard_Real DSdu = 1./surf->UResolution(1.), DSdv = 1./surf->VResolution(1.); Standard_Real d2 = 0.; Standard_Real first = c3d->FirstParameter(); Standard_Real last = c3d->LastParameter(); Standard_Real dapp = -1.; for (Standard_Integer i = 0; i <= nbp; ++i) { const Standard_Real t = IntToReal(i)/IntToReal(nbp); const Standard_Real u = first*(1.-t) + last*t; gp_Pnt Pc3d = c3d->Value(u); gp_Pnt2d Puv = c2d->Value(u); if(!isUPeriodic) { if(Puv.X() < uf - du) { dapp = Max(dapp, DSdu * (uf - Puv.X())); continue; } else if(Puv.X() > ul + du) { dapp = Max(dapp, DSdu * (Puv.X() - ul)); continue; } } if(!isVPeriodic) { if(Puv.Y() < vf - dv) { dapp = Max(dapp, DSdv * (vf - Puv.Y())); continue; } else if(Puv.Y() > vl + dv) { dapp = Max(dapp, DSdv * (Puv.Y() - vl)); continue; } } gp_Pnt Pcons = surf->Value(Puv.X(), Puv.Y()); if (Precision::IsInfinite(Pcons.X()) || Precision::IsInfinite(Pcons.Y()) || Precision::IsInfinite(Pcons.Z())) { d2 = Precision::Infinite(); break; } Standard_Real temp = Pc3d.SquareDistance(Pcons); dist(i+1) = temp; d2 = Max (d2, temp); } if(Precision::IsInfinite(d2)) { return d2; } d2 = Sqrt(d2); if(dapp > d2) { return dapp; } Standard_Boolean ana = Standard_False; Standard_Real D2 = 0; Standard_Integer N1 = 0; Standard_Integer N2 = 0; Standard_Integer N3 = 0; for (Standard_Integer i = 1; i<= nbp+10; ++i) { if (dist(i) > 0) { if (dist(i) < 1.0) { ++N1; } else { ++N2; } } } if (N1 > N2 && N2 != 0) { N3 = 100*N2/(N1+N2); } if (N3 < 10 && N3 != 0) { ana = Standard_True; for (Standard_Integer i = 1; i <= nbp+10; ++i) { if (dist(i) > 0 && dist(i) < 1.0) { D2 = Max (D2, dist(i)); } } } //d2 = 1.5*sqrt(d2); d2 = (!ana) ? 1.5 * d2 : 1.5*sqrt(D2); d2 = Max (d2, 1.e-7); return d2; } //======================================================================= //function : GetCurve3d //purpose : //======================================================================= static void GetCurve3d(const TopoDS_Edge& theEdge, Handle(Geom_Curve)& theC3d, Standard_Real& theF3d, Standard_Real& theL3d, TopLoc_Location& theLoc3d, BRep_ListOfCurveRepresentation& theCList) { const Handle(BRep_TEdge)& aTE = *((Handle(BRep_TEdge)*) &theEdge.TShape()); theCList = aTE->ChangeCurves(); // current function (i.e. GetCurve3d()) will not change any of this curves BRep_ListIteratorOfListOfCurveRepresentation anIt(theCList); Standard_Boolean NotDone = Standard_True; while (NotDone && anIt.More()) { Handle(BRep_GCurve) GCurve = Handle(BRep_GCurve)::DownCast(anIt.Value()); if (!GCurve.IsNull() && GCurve->IsCurve3D()) { theC3d = GCurve->Curve3D() ; theF3d = GCurve->First(); theL3d = GCurve->Last(); theLoc3d = GCurve->Location() ; NotDone = Standard_False; } anIt.Next() ; } } //======================================================================= //function : UpdateVTol //purpose : //======================================================================= void UpdateVTol(const TopoDS_Vertex theV1, const TopoDS_Vertex& theV2, Standard_Real theTol) { BRep_Builder aB; if (!theV1.IsNull()) aB.UpdateVertex(theV1,theTol); if (!theV2.IsNull()) aB.UpdateVertex(theV2,theTol); } //======================================================================= //function : SameParameter //purpose : //======================================================================= void BRepLib::SameParameter(const TopoDS_Edge& theEdge, const Standard_Real theTolerance) { Standard_Real aNewTol = -1; SameParameter(theEdge, theTolerance, aNewTol, Standard_True); if (aNewTol > 0) { TopoDS_Vertex aV1, aV2; TopExp::Vertices(theEdge,aV1,aV2); UpdateVTol(aV1, aV2, aNewTol); } } //======================================================================= //function : SameParameter //purpose : //======================================================================= TopoDS_Edge BRepLib::SameParameter(const TopoDS_Edge& theEdge, const Standard_Real theTolerance, Standard_Real& theNewTol, Standard_Boolean IsUseOldEdge) { if (BRep_Tool::SameParameter(theEdge)) return TopoDS_Edge(); Standard_Real f3d =0.,l3d =0.; TopLoc_Location L3d; Handle(Geom_Curve) C3d; BRep_ListOfCurveRepresentation CList; GetCurve3d(theEdge, C3d, f3d, l3d, L3d, CList); if(C3d.IsNull()) return TopoDS_Edge(); BRep_Builder B; TopoDS_Edge aNE; Handle(BRep_TEdge) aNTE; if (IsUseOldEdge) { aNE = theEdge; aNTE = *((Handle(BRep_TEdge)*) &theEdge.TShape()); } else { aNE = TopoDS::Edge(theEdge.EmptyCopied()); //will be modified a little bit later, so copy anyway GetCurve3d(aNE, C3d, f3d, l3d, L3d, CList); //C3d pointer and CList will be differ after copying aNTE = *((Handle(BRep_TEdge)*) &aNE.TShape()); TopoDS_Iterator sit(theEdge); for (;sit.More();sit.Next()) //add vertices from old edge to the new ones B.Add(aNE, sit.Value()); } BRep_ListIteratorOfListOfCurveRepresentation It(CList); const Standard_Integer NCONTROL = 22; Handle(GeomAdaptor_HCurve) HC = new GeomAdaptor_HCurve(); Handle(Geom2dAdaptor_HCurve) HC2d = new Geom2dAdaptor_HCurve(); Handle(GeomAdaptor_HSurface) HS = new GeomAdaptor_HSurface(); GeomAdaptor_Curve& GAC = HC->ChangeCurve(); Geom2dAdaptor_Curve& GAC2d = HC2d->ChangeCurve2d(); GeomAdaptor_Surface& GAS = HS->ChangeSurface(); // modified by NIZHNY-OCC486 Tue Aug 27 17:15:13 2002 : Standard_Boolean m_TrimmedPeriodical = Standard_False; Handle(Standard_Type) TheType = C3d->DynamicType(); if( TheType == STANDARD_TYPE(Geom_TrimmedCurve)) { Handle(Geom_Curve) gtC (Handle(Geom_TrimmedCurve)::DownCast (C3d)->BasisCurve()); m_TrimmedPeriodical = gtC->IsPeriodic(); } // modified by NIZHNY-OCC486 Tue Aug 27 17:15:17 2002 . if(!C3d->IsPeriodic()) { Standard_Real Udeb = C3d->FirstParameter(); Standard_Real Ufin = C3d->LastParameter(); // modified by NIZHNY-OCC486 Tue Aug 27 17:17:14 2002 : //if (Udeb > f3d) f3d = Udeb; //if (l3d > Ufin) l3d = Ufin; if(!m_TrimmedPeriodical) { if (Udeb > f3d) f3d = Udeb; if (l3d > Ufin) l3d = Ufin; } // modified by NIZHNY-OCC486 Tue Aug 27 17:17:55 2002 . } if(!L3d.IsIdentity()){ C3d = Handle(Geom_Curve)::DownCast(C3d->Transformed(L3d.Transformation())); } GAC.Load(C3d,f3d,l3d); Standard_Real Prec_C3d = BRepCheck::PrecCurve(GAC); Standard_Boolean IsSameP = 1; Standard_Real maxdist = 0.; // Modified by skv - Thu Jun 3 12:39:19 2004 OCC5898 Begin Standard_Real anEdgeTol = BRep_Tool::Tolerance(aNE); // Modified by skv - Thu Jun 3 12:39:20 2004 OCC5898 End Standard_Boolean SameRange = BRep_Tool::SameRange(aNE); Standard_Boolean YaPCu = Standard_False; const Standard_Real BigError = 1.e10; It.Initialize(CList); while (It.More()) { Standard_Boolean isANA = Standard_False; Standard_Boolean isBSP = Standard_False; Handle(BRep_GCurve) GCurve = Handle(BRep_GCurve)::DownCast(It.Value()); Handle(Geom2d_Curve) PC[2]; Handle(Geom_Surface) S; if (!GCurve.IsNull() && GCurve->IsCurveOnSurface()) { YaPCu = Standard_True; PC[0] = GCurve->PCurve(); TopLoc_Location PCLoc = GCurve->Location(); S = GCurve->Surface(); if (!PCLoc.IsIdentity() ) { S = Handle(Geom_Surface)::DownCast(S->Transformed(PCLoc.Transformation())); } GAS.Load(S); if (GCurve->IsCurveOnClosedSurface()) { PC[1] = GCurve->PCurve2(); } // Eval tol2d to compute SameRange Standard_Real TolSameRange = Max(GAC.Resolution(theTolerance), Precision::PConfusion()); for(Standard_Integer i = 0; i < 2; i++){ Handle(Geom2d_Curve) curPC = PC[i]; Standard_Boolean updatepc = 0; if(curPC.IsNull()) break; if(!SameRange){ GeomLib::SameRange(TolSameRange, PC[i],GCurve->First(),GCurve->Last(), f3d,l3d,curPC); updatepc = (curPC != PC[i]); } Standard_Boolean goodpc = 1; GAC2d.Load(curPC,f3d,l3d); Standard_Real error = ComputeTol(HC, HC2d, HS, NCONTROL); if(error > BigError) { maxdist = error; break; } if(GAC2d.GetType() == GeomAbs_BSplineCurve && GAC2d.Continuity() == GeomAbs_C0) { Standard_Real UResol = GAS.UResolution(theTolerance); Standard_Real VResol = GAS.VResolution(theTolerance); Standard_Real TolConf2d = Min(UResol, VResol); TolConf2d = Max(TolConf2d, Precision::PConfusion()); Handle(Geom2d_BSplineCurve) bs2d = GAC2d.BSpline(); Handle(Geom2d_BSplineCurve) bs2dsov = bs2d; Standard_Real fC0 = bs2d->FirstParameter(), lC0 = bs2d->LastParameter(); Standard_Boolean repar = Standard_True; gp_Pnt2d OriginPoint; bs2d->D0(fC0, OriginPoint); Geom2dConvert::C0BSplineToC1BSplineCurve(bs2d, TolConf2d); isBSP = Standard_True; if(bs2d->IsPeriodic()) { // -------- IFV, Jan 2000 gp_Pnt2d NewOriginPoint; bs2d->D0(bs2d->FirstParameter(), NewOriginPoint); if(Abs(OriginPoint.X() - NewOriginPoint.X()) > Precision::PConfusion() || Abs(OriginPoint.Y() - NewOriginPoint.Y()) > Precision::PConfusion() ) { TColStd_Array1OfReal Knotbs2d (1, bs2d->NbKnots()); bs2d->Knots(Knotbs2d); for(Standard_Integer Index = 1; Index <= bs2d->NbKnots(); Index++) { bs2d->D0(Knotbs2d(Index), NewOriginPoint); if(Abs(OriginPoint.X() - NewOriginPoint.X()) > Precision::PConfusion() || Abs(OriginPoint.Y() - NewOriginPoint.Y()) > Precision::PConfusion() ) continue; bs2d->SetOrigin(Index); break; } } } if(bs2d->Continuity() == GeomAbs_C0) { Standard_Real tolbail; if(EvalTol(curPC,S,GAC,theTolerance,tolbail)){ bs2d = bs2dsov; Standard_Real UResbail = GAS.UResolution(tolbail); Standard_Real VResbail = GAS.VResolution(tolbail); Standard_Real Tol2dbail = Min(UResbail,VResbail); bs2d->D0(bs2d->FirstParameter(), OriginPoint); Standard_Integer nbp = bs2d->NbPoles(); TColgp_Array1OfPnt2d poles(1,nbp); bs2d->Poles(poles); gp_Pnt2d p = poles(1), p1; Standard_Real d = Precision::Infinite(); for(Standard_Integer ip = 2; ip <= nbp; ip++) { p1 = poles(ip); d = Min(d,p.SquareDistance(p1)); p = p1; } d = sqrt(d)*.1; Tol2dbail = Max(Min(Tol2dbail,d), TolConf2d); Geom2dConvert::C0BSplineToC1BSplineCurve(bs2d,Tol2dbail); if(bs2d->IsPeriodic()) { // -------- IFV, Jan 2000 gp_Pnt2d NewOriginPoint; bs2d->D0(bs2d->FirstParameter(), NewOriginPoint); if(Abs(OriginPoint.X() - NewOriginPoint.X()) > Precision::PConfusion() || Abs(OriginPoint.Y() - NewOriginPoint.Y()) > Precision::PConfusion() ) { TColStd_Array1OfReal Knotbs2d (1, bs2d->NbKnots()); bs2d->Knots(Knotbs2d); for(Standard_Integer Index = 1; Index <= bs2d->NbKnots(); Index++) { bs2d->D0(Knotbs2d(Index), NewOriginPoint); if(Abs(OriginPoint.X() - NewOriginPoint.X()) > Precision::PConfusion() || Abs(OriginPoint.Y() - NewOriginPoint.Y()) > Precision::PConfusion() ) continue; bs2d->SetOrigin(Index); break; } } } if(bs2d->Continuity() == GeomAbs_C0) { goodpc = 1; bs2d = bs2dsov; repar = Standard_False; } } else goodpc = 0; } if(goodpc){ if(repar) { Standard_Integer NbKnots = bs2d->NbKnots(); TColStd_Array1OfReal Knots(1,NbKnots); bs2d->Knots(Knots); // BSplCLib::Reparametrize(f3d,l3d,Knots); BSplCLib::Reparametrize(fC0,lC0,Knots); bs2d->SetKnots(Knots); GAC2d.Load(bs2d,f3d,l3d); curPC = bs2d; Standard_Boolean updatepcsov = updatepc; updatepc = Standard_True; Standard_Real error1 = ComputeTol(HC, HC2d, HS, NCONTROL); if(error1 > error) { bs2d = bs2dsov; GAC2d.Load(bs2d,f3d,l3d); curPC = bs2d; updatepc = updatepcsov; isANA = Standard_True; } else { error = error1; } } //check, if new BSpline "good" or not --------- IFV, Jan of 2000 GeomAbs_Shape cont = bs2d->Continuity(); Standard_Boolean IsBad = Standard_False; if(cont > GeomAbs_C0 && error > Max(1.e-3,theTolerance)) { Standard_Integer NbKnots = bs2d->NbKnots(); TColStd_Array1OfReal Knots(1,NbKnots); bs2d->Knots(Knots); Standard_Real critratio = 10.; Standard_Real dtprev = Knots(2) - Knots(1), dtratio = 1.; Standard_Real dtmin = dtprev; Standard_Real dtcur; for(Standard_Integer j = 2; j < NbKnots; j++) { dtcur = Knots(j+1) - Knots(j); dtmin = Min(dtmin, dtcur); if(IsBad) continue; if(dtcur > dtprev) dtratio = dtcur/dtprev; else dtratio = dtprev/dtcur; if(dtratio > critratio) {IsBad = Standard_True;} dtprev = dtcur; } if(IsBad) { // To avoid failures in Approx_CurvilinearParameter bs2d->Resolution(Max(1.e-3,theTolerance), dtcur); if(dtmin < dtcur) IsBad = Standard_False; } } if(IsBad ) { //if BSpline "bad", try to reparametrize it // by its curve length // GeomAbs_Shape cont = bs2d->Continuity(); if(cont > GeomAbs_C2) cont = GeomAbs_C2; Standard_Integer maxdeg = bs2d->Degree(); if(maxdeg == 1) maxdeg = 14; Approx_CurvilinearParameter AppCurPar(HC2d, HS, Max(1.e-3,theTolerance), cont, maxdeg, 10); if(AppCurPar.IsDone() || AppCurPar.HasResult()) { bs2d = AppCurPar.Curve2d1(); GAC2d.Load(bs2d,f3d,l3d); curPC = bs2d; if(Abs(bs2d->FirstParameter() - fC0) > TolSameRange || Abs(bs2d->LastParameter() - lC0) > TolSameRange) { Standard_Integer NbKnots = bs2d->NbKnots(); TColStd_Array1OfReal Knots(1,NbKnots); bs2d->Knots(Knots); // BSplCLib::Reparametrize(f3d,l3d,Knots); BSplCLib::Reparametrize(fC0,lC0,Knots); bs2d->SetKnots(Knots); GAC2d.Load(bs2d,f3d,l3d); curPC = bs2d; } } } } } if(goodpc){ // Approx_SameParameter SameP(HC,HC2d,HS,Tolerance); Standard_Real aTol = (isANA && isBSP) ? 1.e-7 : theTolerance; const Handle(Adaptor3d_HCurve)& aHCurv = HC; // to avoid ambiguity const Handle(Adaptor2d_HCurve2d)& aHCurv2d = HC2d; // to avoid ambiguity Approx_SameParameter SameP(aHCurv,aHCurv2d,HS,aTol); if (SameP.IsSameParameter()) { maxdist = Max(maxdist,SameP.TolReached()); if(updatepc){ if (i == 0) GCurve->PCurve(curPC); else GCurve->PCurve2(curPC); } } else if (SameP.IsDone()) { Standard_Real tolreached = SameP.TolReached(); if(tolreached <= error) { curPC = SameP.Curve2d(); updatepc = Standard_True; maxdist = Max(maxdist,tolreached); } else { maxdist = Max(maxdist, error); } if(updatepc){ if (i == 0) GCurve->PCurve(curPC); else GCurve->PCurve2(curPC); } } else { //Approx_SameParameter has failed. //Consequently, the situation might be, //when 3D and 2D-curve do not have same-range. GeomLib::SameRange( TolSameRange, PC[i], GCurve->First(), GCurve->Last(), f3d,l3d,curPC); if (i == 0) GCurve->PCurve(curPC); else GCurve->PCurve2(curPC); IsSameP = 0; } } else IsSameP = 0; // Modified by skv - Thu Jun 3 12:39:19 2004 OCC5898 Begin if (!IsSameP) { Standard_Real Prec_Surf = BRepCheck::PrecSurface(HS); Standard_Real CurTol = anEdgeTol + Max(Prec_C3d, Prec_Surf); if (CurTol >= error) { maxdist = Max(maxdist, anEdgeTol); IsSameP = Standard_True; } } // Modified by skv - Thu Jun 3 12:39:20 2004 OCC5898 End } } It.Next() ; } B.Range(aNE,f3d,l3d); B.SameRange(aNE,Standard_True); if ( IsSameP) { // Reduce eventually the tolerance of the edge, as // all its representations are processed (except for some associated // to planes and not stored in the edge !) // The same cannot be done with vertices that cannot be enlarged // or left as is. if (YaPCu) { // Avoid setting too small tolerances. maxdist = Max(maxdist,Precision::Confusion()); theNewTol = maxdist; aNTE->Modified(Standard_True); aNTE->Tolerance(maxdist); } B.SameParameter(aNE,Standard_True); } return aNE; } //======================================================================= //function : InternalUpdateTolerances //purpose : //======================================================================= static void InternalUpdateTolerances(const TopoDS_Shape& theOldShape, const Standard_Boolean IsVerifyTolerance, const Standard_Boolean IsMutableInput, BRepTools_ReShape& theReshaper) { TopTools_DataMapOfShapeReal aShToTol; // Harmonize tolerances // with rule Tolerance(VERTEX)>=Tolerance(EDGE)>=Tolerance(FACE) Standard_Real tol=0; if (IsVerifyTolerance) { // Set tolerance to its minimum value Handle(Geom_Surface) S; TopLoc_Location l; TopExp_Explorer ex; Bnd_Box aB; Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax, dMax; for (ex.Init(theOldShape, TopAbs_FACE); ex.More(); ex.Next()) { const TopoDS_Face& curf=TopoDS::Face(ex.Current()); S = BRep_Tool::Surface(curf, l); if (!S.IsNull()) { aB.SetVoid(); BRepBndLib::Add(curf,aB); if (S->DynamicType() == STANDARD_TYPE(Geom_RectangularTrimmedSurface)) { S = Handle(Geom_RectangularTrimmedSurface)::DownCast (S)->BasisSurface(); } GeomAdaptor_Surface AS(S); switch (AS.GetType()) { case GeomAbs_Plane: case GeomAbs_Cylinder: case GeomAbs_Cone: { tol=Precision::Confusion(); break; } case GeomAbs_Sphere: case GeomAbs_Torus: { tol=Precision::Confusion()*2; break; } default: tol=Precision::Confusion()*4; } if (!aB.IsWhole()) { aB.Get(aXmin, aYmin, aZmin, aXmax, aYmax, aZmax); dMax=1.; if (!aB.IsOpenXmin() && !aB.IsOpenXmax()) dMax=aXmax-aXmin; if (!aB.IsOpenYmin() && !aB.IsOpenYmax()) aYmin=aYmax-aYmin; if (!aB.IsOpenZmin() && !aB.IsOpenZmax()) aZmin=aZmax-aZmin; if (aYmin>dMax) dMax=aYmin; if (aZmin>dMax) dMax=aZmin; tol=tol*dMax; // Do not process tolerances > 1. if (tol>1.) tol=0.99; } aShToTol.Bind(curf, tol); } } } //Process edges TopTools_IndexedDataMapOfShapeListOfShape parents; TopExp::MapShapesAndAncestors(theOldShape, TopAbs_EDGE, TopAbs_FACE, parents); TopTools_ListIteratorOfListOfShape lConx; Standard_Integer iCur; for (iCur=1; iCur<=parents.Extent(); iCur++) { tol=0; for (lConx.Initialize(parents(iCur)); lConx.More(); lConx.Next()) { const TopoDS_Face& FF = TopoDS::Face(lConx.Value()); Standard_Real Ftol; if (IsVerifyTolerance && aShToTol.IsBound(FF)) //first condition for speed-up Ftol = aShToTol(FF); else Ftol = BRep_Tool::Tolerance(FF); //tolerance have not been updated tol=Max(tol, Ftol); } // Update can only increase tolerance, so if the edge has a greater // tolerance than its faces it is not concerned const TopoDS_Edge& EK = TopoDS::Edge(parents.FindKey(iCur)); if (tol > BRep_Tool::Tolerance(EK)) aShToTol.Bind(EK, tol); } //Vertices are processed const Standard_Real BigTol = 1.e10; parents.Clear(); TopExp::MapShapesAndUniqueAncestors(theOldShape, TopAbs_VERTEX, TopAbs_EDGE, parents); TColStd_MapOfTransient Initialized; Standard_Integer nbV = parents.Extent(); for (iCur=1; iCur<=nbV; iCur++) { tol=0; const TopoDS_Vertex& V = TopoDS::Vertex(parents.FindKey(iCur)); Bnd_Box box; box.Add(BRep_Tool::Pnt(V)); gp_Pnt p3d; for (lConx.Initialize(parents(iCur)); lConx.More(); lConx.Next()) { const TopoDS_Edge& E = TopoDS::Edge(lConx.Value()); const Standard_Real* aNtol = aShToTol.Seek(E); tol=Max(tol, aNtol ? *aNtol : BRep_Tool::Tolerance(E)); if(tol > BigTol) continue; if(!BRep_Tool::SameRange(E)) continue; Standard_Real par = BRep_Tool::Parameter(V,E); Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&E.TShape()); BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->Curves()); const TopLoc_Location& Eloc = E.Location(); while (itcr.More()) { // For each CurveRepresentation, check the provided parameter const Handle(BRep_CurveRepresentation)& cr = itcr.Value(); const TopLoc_Location& loc = cr->Location(); TopLoc_Location L = (Eloc * loc); if (cr->IsCurve3D()) { const Handle(Geom_Curve)& C = cr->Curve3D(); if (!C.IsNull()) { // edge non degenerated p3d = C->Value(par); p3d.Transform(L.Transformation()); box.Add(p3d); } } else if (cr->IsCurveOnSurface()) { const Handle(Geom_Surface)& Su = cr->Surface(); const Handle(Geom2d_Curve)& PC = cr->PCurve(); Handle(Geom2d_Curve) PC2; if (cr->IsCurveOnClosedSurface()) { PC2 = cr->PCurve2(); } gp_Pnt2d p2d = PC->Value(par); p3d = Su->Value(p2d.X(),p2d.Y()); p3d.Transform(L.Transformation()); box.Add(p3d); if (!PC2.IsNull()) { p2d = PC2->Value(par); p3d = Su->Value(p2d.X(),p2d.Y()); p3d.Transform(L.Transformation()); box.Add(p3d); } } itcr.Next(); } } Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax; box.Get(aXmin, aYmin, aZmin, aXmax, aYmax, aZmax); aXmax -= aXmin; aYmax -= aYmin; aZmax -= aZmin; tol = Max(tol,sqrt(aXmax*aXmax+aYmax*aYmax+aZmax*aZmax)); tol += 2.*Epsilon(tol); // Standard_Real aVTol = BRep_Tool::Tolerance(V); Standard_Boolean anUpdTol = tol > aVTol; const Handle(BRep_TVertex)& aTV = *((Handle(BRep_TVertex)*)&V.TShape()); Standard_Boolean toAdd = Standard_False; if (IsVerifyTolerance) { // ASet minimum value of the tolerance // Attention to sharing of the vertex by other shapes toAdd = Initialized.Add(aTV) && aVTol != tol; //if Vtol == tol => no need to update toler } //'Initialized' map is not used anywhere outside this block if (anUpdTol || toAdd) aShToTol.Bind(V, tol); } UpdShTol(aShToTol, IsMutableInput, theReshaper, Standard_True); } //======================================================================= //function : UpdateTolerances //purpose : //======================================================================= void BRepLib::UpdateTolerances (const TopoDS_Shape& S, const Standard_Boolean verifyFaceTolerance) { BRepTools_ReShape aReshaper; InternalUpdateTolerances(S, verifyFaceTolerance, Standard_True, aReshaper); } //======================================================================= //function : UpdateTolerances //purpose : //======================================================================= void BRepLib::UpdateTolerances (const TopoDS_Shape& S, BRepTools_ReShape& theReshaper, const Standard_Boolean verifyFaceTolerance ) { InternalUpdateTolerances(S, verifyFaceTolerance, Standard_False, theReshaper); } //======================================================================= //function : UpdateInnerTolerances //purpose : //======================================================================= void BRepLib::UpdateInnerTolerances(const TopoDS_Shape& aShape) { TopTools_IndexedDataMapOfShapeListOfShape EFmap; TopExp::MapShapesAndAncestors(aShape, TopAbs_EDGE, TopAbs_FACE, EFmap); BRep_Builder BB; for (Standard_Integer i = 1; i <= EFmap.Extent(); i++) { TopoDS_Edge anEdge = TopoDS::Edge(EFmap.FindKey(i)); if (!BRep_Tool::IsGeometric(anEdge)) { continue; } TopoDS_Vertex V1, V2; TopExp::Vertices(anEdge, V1, V2); Standard_Real fpar, lpar; BRep_Tool::Range(anEdge, fpar, lpar); Standard_Real TolEdge = BRep_Tool::Tolerance(anEdge); gp_Pnt Pnt1, Pnt2; Handle(BRepAdaptor_HCurve) anHCurve = new BRepAdaptor_HCurve(); anHCurve->ChangeCurve().Initialize(anEdge); if (!V1.IsNull()) Pnt1 = BRep_Tool::Pnt(V1); if (!V2.IsNull()) Pnt2 = BRep_Tool::Pnt(V2); if (!BRep_Tool::Degenerated(anEdge) && EFmap(i).Extent() > 0) { NCollection_Sequence theRep; theRep.Append(anHCurve); TopTools_ListIteratorOfListOfShape itl(EFmap(i)); for (; itl.More(); itl.Next()) { const TopoDS_Face& aFace = TopoDS::Face(itl.Value()); Handle(BRepAdaptor_HCurve) anHCurvOnSurf = new BRepAdaptor_HCurve(); anHCurvOnSurf->ChangeCurve().Initialize(anEdge, aFace); theRep.Append(anHCurvOnSurf); } const Standard_Integer NbSamples = (BRep_Tool::SameParameter(anEdge))? 23 : 2; Standard_Real delta = (lpar - fpar)/(NbSamples-1); Standard_Real MaxDist = 0.; for (Standard_Integer j = 2; j <= theRep.Length(); j++) { for (Standard_Integer k = 0; k <= NbSamples; k++) { Standard_Real ParamOnCenter = (k == NbSamples)? lpar : fpar + k*delta; gp_Pnt Center = theRep(1)->Value(ParamOnCenter); Standard_Real ParamOnCurve = (BRep_Tool::SameParameter(anEdge))? ParamOnCenter : ((k == 0)? theRep(j)->FirstParameter() : theRep(j)->LastParameter()); gp_Pnt aPoint = theRep(j)->Value(ParamOnCurve); Standard_Real aDist = Center.Distance(aPoint); //aDist *= 1.1; aDist += 2.*Epsilon(aDist); if (aDist > MaxDist) MaxDist = aDist; //Update tolerances of vertices if (k == 0 && !V1.IsNull()) { Standard_Real aDist1 = Pnt1.Distance(aPoint); aDist1 += 2.*Epsilon(aDist1); BB.UpdateVertex(V1, aDist1); } if (k == NbSamples && !V2.IsNull()) { Standard_Real aDist2 = Pnt2.Distance(aPoint); aDist2 += 2.*Epsilon(aDist2); BB.UpdateVertex(V2, aDist2); } } } BB.UpdateEdge(anEdge, MaxDist); } TolEdge = BRep_Tool::Tolerance(anEdge); if (!V1.IsNull()) { gp_Pnt End1 = anHCurve->Value(fpar); Standard_Real dist1 = Pnt1.Distance(End1); dist1 += 2.*Epsilon(dist1); BB.UpdateVertex(V1, Max(dist1, TolEdge)); } if (!V2.IsNull()) { gp_Pnt End2 = anHCurve->Value(lpar); Standard_Real dist2 = Pnt2.Distance(End2); dist2 += 2.*Epsilon(dist2); BB.UpdateVertex(V2, Max(dist2, TolEdge)); } } } //======================================================================= //function : OrientClosedSolid //purpose : //======================================================================= Standard_Boolean BRepLib::OrientClosedSolid(TopoDS_Solid& solid) { // Set material inside the solid BRepClass3d_SolidClassifier where(solid); where.PerformInfinitePoint(Precision::Confusion()); if (where.State()==TopAbs_IN) { solid.Reverse(); } else if (where.State()==TopAbs_ON || where.State()==TopAbs_UNKNOWN) return Standard_False; return Standard_True; } // Structure for calculation of properties, necessary for decision about continuity class SurfaceProperties { public: SurfaceProperties(const Handle(Geom_Surface)& theSurface, const gp_Trsf& theSurfaceTrsf, const Handle(Geom2d_Curve)& theCurve2D, const Standard_Boolean theReversed) : mySurfaceProps(theSurface, 2, Precision::Confusion()), mySurfaceTrsf(theSurfaceTrsf), myCurve2d(theCurve2D), myIsReversed(theReversed) {} // Calculate derivatives on surface related to the point on curve void Calculate(const Standard_Real theParamOnCurve) { gp_Pnt2d aUV; myCurve2d->D1(theParamOnCurve, aUV, myCurveTangent); mySurfaceProps.SetParameters(aUV.X(), aUV.Y()); } // Returns point just calculated gp_Pnt Value() { return mySurfaceProps.Value().Transformed(mySurfaceTrsf); } // Calculate a derivative orthogonal to curve's tangent vector gp_Vec Derivative() { gp_Vec aDeriv; // direction orthogonal to tangent vector of the curve gp_Vec2d anOrtho(-myCurveTangent.Y(), myCurveTangent.X()); Standard_Real aLen = anOrtho.Magnitude(); if (aLen < Precision::Confusion()) return aDeriv; anOrtho /= aLen; if (myIsReversed) anOrtho.Reverse(); aDeriv.SetLinearForm(anOrtho.X(), mySurfaceProps.D1U(), anOrtho.Y(), mySurfaceProps.D1V()); return aDeriv.Transformed(mySurfaceTrsf); } // Calculate principal curvatures, which consist of minimal and maximal normal curvatures and // the directions on the tangent plane (principal direction) where the extremums are reached void Curvature(gp_Dir& thePrincipalDir1, Standard_Real& theCurvature1, gp_Dir& thePrincipalDir2, Standard_Real& theCurvature2) { mySurfaceProps.CurvatureDirections(thePrincipalDir1, thePrincipalDir2); theCurvature1 = mySurfaceProps.MaxCurvature(); theCurvature2 = mySurfaceProps.MinCurvature(); if (myIsReversed) { theCurvature1 = -theCurvature1; theCurvature2 = -theCurvature2; } thePrincipalDir1.Transform(mySurfaceTrsf); thePrincipalDir2.Transform(mySurfaceTrsf); } private: GeomLProp_SLProps mySurfaceProps; // properties calculator gp_Trsf mySurfaceTrsf; Handle(Geom2d_Curve) myCurve2d; Standard_Boolean myIsReversed; // the face based on the surface is reversed // tangent vector to Pcurve in UV gp_Vec2d myCurveTangent; }; //======================================================================= //function : tgtfaces //purpose : check the angle at the border between two squares. // Two shares should have a shared front edge. //======================================================================= static GeomAbs_Shape tgtfaces(const TopoDS_Edge& Ed, const TopoDS_Face& F1, const TopoDS_Face& F2, const Standard_Real theAngleTol) { Standard_Boolean isSeam = F1.IsEqual(F2); TopoDS_Edge E = Ed; // Check if pcurves exist on both faces of edge Standard_Real aFirst,aLast; E.Orientation(TopAbs_FORWARD); Handle(Geom2d_Curve) aCurve1 = BRep_Tool::CurveOnSurface(E, F1, aFirst, aLast); if(aCurve1.IsNull()) return GeomAbs_C0; if (isSeam) E.Orientation(TopAbs_REVERSED); Handle(Geom2d_Curve) aCurve2 = BRep_Tool::CurveOnSurface(E, F2, aFirst, aLast); if(aCurve2.IsNull()) return GeomAbs_C0; TopLoc_Location aLoc1, aLoc2; Handle(Geom_Surface) aSurface1 = BRep_Tool::Surface(F1, aLoc1); const gp_Trsf& aSurf1Trsf = aLoc1.Transformation(); Handle(Geom_Surface) aSurface2 = BRep_Tool::Surface(F2, aLoc2); const gp_Trsf& aSurf2Trsf = aLoc2.Transformation(); if (aSurface1->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) aSurface1 = Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurface1)->BasisSurface(); if (aSurface2->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) aSurface2 = Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurface2)->BasisSurface(); // seam edge on elementary surface is always CN Standard_Boolean isElementary = (aSurface1->IsKind(STANDARD_TYPE(Geom_ElementarySurface)) && aSurface2->IsKind(STANDARD_TYPE(Geom_ElementarySurface))); if (isSeam && isElementary) { return GeomAbs_CN; } SurfaceProperties aSP1(aSurface1, aSurf1Trsf, aCurve1, F1.Orientation() == TopAbs_REVERSED); SurfaceProperties aSP2(aSurface2, aSurf2Trsf, aCurve2, F2.Orientation() == TopAbs_REVERSED); Standard_Real f, l, eps; BRep_Tool::Range(E,f,l); Extrema_LocateExtPC ext; Handle(BRepAdaptor_HCurve) aHC2; eps = (l - f)/100.; f += eps; // to avoid calculations on l -= eps; // points of pointed squares. const Standard_Real anAngleTol2 = theAngleTol * theAngleTol; gp_Vec aDer1, aDer2; gp_Vec aNorm1; Standard_Real aSqLen1, aSqLen2; gp_Dir aCrvDir1[2], aCrvDir2[2]; Standard_Real aCrvLen1[2], aCrvLen2[2]; GeomAbs_Shape aCont = (isElementary ? GeomAbs_CN : GeomAbs_C2); GeomAbs_Shape aCurCont; Standard_Real u; for (Standard_Integer i = 0; i <= 20 && aCont > GeomAbs_C0; i++) { // First suppose that this is sameParameter u = f + (l-f)*i/20; // Check conditions for G1 and C1 continuity: // * calculate a derivative in tangent plane of each surface // orthogonal to curve's tangent vector // * continuity is C1 if the vectors are equal // * continuity is G1 if the vectors are just parallel aCurCont = GeomAbs_C0; aSP1.Calculate(u); aSP2.Calculate(u); aDer1 = aSP1.Derivative(); aSqLen1 = aDer1.SquareMagnitude(); aDer2 = aSP2.Derivative(); aSqLen2 = aDer2.SquareMagnitude(); Standard_Boolean isSmoothSuspect = (aDer1.CrossSquareMagnitude(aDer2) <= anAngleTol2 * aSqLen1 * aSqLen2); if (!isSmoothSuspect) { // Refine by projection if (aHC2.IsNull()) { // adaptor for pcurve on the second surface aHC2 = new BRepAdaptor_HCurve(BRepAdaptor_Curve(E, F2)); ext.Initialize(aHC2->Curve(), f, l, Precision::PConfusion()); } ext.Perform(aSP1.Value(), u); if (ext.IsDone() && ext.IsMin()) { const Extrema_POnCurv& poc = ext.Point(); aSP2.Calculate(poc.Parameter()); aDer2 = aSP2.Derivative(); aSqLen2 = aDer2.SquareMagnitude(); } isSmoothSuspect = (aDer1.CrossSquareMagnitude(aDer2) <= anAngleTol2 * aSqLen1 * aSqLen2); } if (isSmoothSuspect) { aCurCont = GeomAbs_G1; if (Abs(Sqrt(aSqLen1) - Sqrt(aSqLen2)) < Precision::Confusion() && aDer1.Dot(aDer2) > Precision::SquareConfusion()) // <= check vectors are codirectional aCurCont = GeomAbs_C1; } else return GeomAbs_C0; if (aCont < GeomAbs_G2) continue; // no need further processing, because maximal continuity is less than G2 // Check conditions for G2 and C2 continuity: // * calculate principal curvatures on each surface // * continuity is C2 if directions of principal curvatures are equal on differenct surfaces // * continuity is G2 if directions of principal curvatures are just parallel // and values of curvatures are the same aSP1.Curvature(aCrvDir1[0], aCrvLen1[0], aCrvDir1[1], aCrvLen1[1]); aSP2.Curvature(aCrvDir2[0], aCrvLen2[0], aCrvDir2[1], aCrvLen2[1]); for (Standard_Integer aStep = 0; aStep <= 1; ++aStep) { if (aCrvDir1[0].XYZ().CrossSquareMagnitude(aCrvDir2[aStep].XYZ()) <= Precision::SquareConfusion() && Abs(aCrvLen1[0] - aCrvLen2[aStep]) < Precision::Confusion() && aCrvDir1[1].XYZ().CrossSquareMagnitude(aCrvDir2[1 - aStep].XYZ()) <= Precision::SquareConfusion() && Abs(aCrvLen1[1] - aCrvLen2[1 - aStep]) < Precision::Confusion()) { if (aCurCont == GeomAbs_C1 && aCrvDir1[0].Dot(aCrvDir2[aStep]) > Precision::Confusion() && aCrvDir1[1].Dot(aCrvDir2[1 - aStep]) > Precision::Confusion()) aCurCont = GeomAbs_C2; else aCurCont = GeomAbs_G2; break; } } if (aCurCont < aCont) aCont = aCurCont; } // according to the list of supported elementary surfaces, // if the continuity is C2, than it is totally CN if (isElementary && aCont == GeomAbs_C2) aCont = GeomAbs_CN; return aCont; } //======================================================================= // function : EncodeRegularity // purpose : Code the regularities on all edges of the shape, boundary of // two faces that do not have it. // Takes into account that compound may consists of same solid // placed with different transformations //======================================================================= static void EncodeRegularity(const TopoDS_Shape& theShape, const Standard_Real theTolAng, TopTools_MapOfShape& theMap, const TopTools_MapOfShape& theEdgesToEncode = TopTools_MapOfShape()) { TopoDS_Shape aShape = theShape; TopLoc_Location aNullLoc; aShape.Location(aNullLoc); // nullify location if (!theMap.Add(aShape)) return; // do not need to process shape twice if (aShape.ShapeType() == TopAbs_COMPOUND || aShape.ShapeType() == TopAbs_COMPSOLID) { for (TopoDS_Iterator it(aShape); it.More(); it.Next()) EncodeRegularity(it.Value(), theTolAng, theMap, theEdgesToEncode); return; } try { OCC_CATCH_SIGNALS TopTools_IndexedDataMapOfShapeListOfShape M; TopExp::MapShapesAndAncestors(aShape, TopAbs_EDGE, TopAbs_FACE, M); TopTools_ListIteratorOfListOfShape It; TopExp_Explorer Ex; TopoDS_Face F1,F2; Standard_Boolean found; for (Standard_Integer i = 1; i <= M.Extent(); i++){ TopoDS_Edge E = TopoDS::Edge(M.FindKey(i)); if (!theEdgesToEncode.IsEmpty()) { // process only the edges from the list to update their regularity TopoDS_Shape aPureEdge = E.Located(aNullLoc); aPureEdge.Orientation(TopAbs_FORWARD); if (!theEdgesToEncode.Contains(aPureEdge)) continue; } found = Standard_False; F1.Nullify(); for (It.Initialize(M.FindFromIndex(i)); It.More() && !found; It.Next()){ if (F1.IsNull()) { F1 = TopoDS::Face(It.Value()); } else { const TopoDS_Face& aTmpF2 = TopoDS::Face(It.Value()); if (!F1.IsSame(aTmpF2)){ found = Standard_True; F2 = aTmpF2; } } } if (!found && !F1.IsNull()){//is it a sewing edge? TopAbs_Orientation orE = E.Orientation(); TopoDS_Edge curE; for (Ex.Init(F1, TopAbs_EDGE); Ex.More() && !found; Ex.Next()){ curE = TopoDS::Edge(Ex.Current()); if (E.IsSame(curE) && orE != curE.Orientation()) { found = Standard_True; F2 = F1; } } } if (found) BRepLib::EncodeRegularity(E, F1, F2, theTolAng); } } catch (Standard_Failure const& anException) { #ifdef OCCT_DEBUG std::cout << "Warning: Exception in BRepLib::EncodeRegularity(): "; anException.Print(std::cout); std::cout << std::endl; #endif (void)anException; } } //======================================================================= // function : EncodeRegularity // purpose : code the regularities on all edges of the shape, boundary of // two faces that do not have it. //======================================================================= void BRepLib::EncodeRegularity(const TopoDS_Shape& S, const Standard_Real TolAng) { TopTools_MapOfShape aMap; ::EncodeRegularity(S, TolAng, aMap); } //======================================================================= // function : EncodeRegularity // purpose : code the regularities on all edges in the list that do not // have it, and which are boundary of two faces on the shape. //======================================================================= void BRepLib::EncodeRegularity(const TopoDS_Shape& S, const TopTools_ListOfShape& LE, const Standard_Real TolAng) { // Collect edges without location and orientation TopTools_MapOfShape aPureEdges; TopLoc_Location aNullLoc; TopTools_ListIteratorOfListOfShape anEdgeIt(LE); for (; anEdgeIt.More(); anEdgeIt.Next()) { TopoDS_Shape anEdge = anEdgeIt.Value(); anEdge.Location(aNullLoc); anEdge.Orientation(TopAbs_FORWARD); aPureEdges.Add(anEdge); } TopTools_MapOfShape aMap; ::EncodeRegularity(S, TolAng, aMap, aPureEdges); } //======================================================================= // function : EncodeRegularity // purpose : code the regularity between 2 faces connected by edge //======================================================================= void BRepLib::EncodeRegularity(TopoDS_Edge& E, const TopoDS_Face& F1, const TopoDS_Face& F2, const Standard_Real TolAng) { BRep_Builder B; if(BRep_Tool::Continuity(E,F1,F2)<=GeomAbs_C0){ try { GeomAbs_Shape aCont = tgtfaces(E, F1, F2, TolAng); B.Continuity(E,F1,F2,aCont); } catch(Standard_Failure const&) { #ifdef OCCT_DEBUG std::cout << "Failure: Exception in BRepLib::EncodeRegularity" << std::endl; #endif } } } //======================================================================= // function : EnsureNormalConsistency // purpose : Corrects the normals in Poly_Triangulation of faces. // Returns TRUE if any correction is done. //======================================================================= Standard_Boolean BRepLib:: EnsureNormalConsistency(const TopoDS_Shape& theShape, const Standard_Real theAngTol, const Standard_Boolean theForceComputeNormals) { const Standard_Real aThresDot = cos(theAngTol); Standard_Boolean aRetVal = Standard_False, isNormalsFound = Standard_False; // compute normals if they are absent TopExp_Explorer anExpFace(theShape,TopAbs_FACE); for (; anExpFace.More(); anExpFace.Next()) { const TopoDS_Face& aFace = TopoDS::Face(anExpFace.Current()); const Handle(Geom_Surface) aSurf = BRep_Tool::Surface(aFace); if(aSurf.IsNull()) continue; TopLoc_Location aLoc; const Handle(Poly_Triangulation)& aPT = BRep_Tool::Triangulation(aFace, aLoc); if(aPT.IsNull()) continue; if (!theForceComputeNormals && aPT->HasNormals()) { isNormalsFound = Standard_True; continue; } GeomLProp_SLProps aSLP(aSurf, 2, Precision::Confusion()); const Standard_Integer anArrDim = 3*aPT->NbNodes(); Handle(TShort_HArray1OfShortReal) aNormArr = new TShort_HArray1OfShortReal(1, anArrDim); Standard_Integer anNormInd = aNormArr->Lower(); for(Standard_Integer i = aPT->UVNodes().Lower(); i <= aPT->UVNodes().Upper(); i++) { const gp_Pnt2d &aP2d = aPT->UVNodes().Value(i); aSLP.SetParameters(aP2d.X(), aP2d.Y()); gp_XYZ aNorm(0.,0.,0.); if(!aSLP.IsNormalDefined()) { #ifdef OCCT_DEBUG std::cout << "BRepLib::EnsureNormalConsistency(): Cannot find normal!" << std::endl; #endif } else { aNorm = aSLP.Normal().XYZ(); if (aFace.Orientation() == TopAbs_REVERSED) aNorm.Reverse(); } aNormArr->ChangeValue(anNormInd++) = static_cast(aNorm.X()); aNormArr->ChangeValue(anNormInd++) = static_cast(aNorm.Y()); aNormArr->ChangeValue(anNormInd++) = static_cast(aNorm.Z()); } aRetVal = Standard_True; isNormalsFound = Standard_True; aPT->SetNormals(aNormArr); } if(!isNormalsFound) { return aRetVal; } // loop by edges TopTools_IndexedDataMapOfShapeListOfShape aMapEF; TopExp::MapShapesAndAncestors(theShape,TopAbs_EDGE,TopAbs_FACE,aMapEF); for(Standard_Integer anInd = 1; anInd <= aMapEF.Extent(); anInd++) { const TopoDS_Edge& anEdg = TopoDS::Edge(aMapEF.FindKey(anInd)); const TopTools_ListOfShape& anEdgList = aMapEF.FindFromIndex(anInd); if (anEdgList.Extent() != 2) continue; TopTools_ListIteratorOfListOfShape anItF(anEdgList); const TopoDS_Face aFace1 = TopoDS::Face(anItF.Value()); anItF.Next(); const TopoDS_Face aFace2 = TopoDS::Face(anItF.Value()); TopLoc_Location aLoc1, aLoc2; const Handle(Poly_Triangulation)& aPT1 = BRep_Tool::Triangulation(aFace1, aLoc1); const Handle(Poly_Triangulation)& aPT2 = BRep_Tool::Triangulation(aFace2, aLoc2); if(aPT1.IsNull() || aPT2.IsNull()) continue; if(!aPT1->HasNormals() || !aPT2->HasNormals()) continue; const Handle(Poly_PolygonOnTriangulation)& aPTEF1 = BRep_Tool::PolygonOnTriangulation(anEdg, aPT1, aLoc1); const Handle(Poly_PolygonOnTriangulation)& aPTEF2 = BRep_Tool::PolygonOnTriangulation(anEdg, aPT2, aLoc2); TShort_Array1OfShortReal& aNormArr1 = aPT1->ChangeNormals(); TShort_Array1OfShortReal& aNormArr2 = aPT2->ChangeNormals(); if (aPTEF1->Nodes().Lower() != aPTEF2->Nodes().Lower() || aPTEF1->Nodes().Upper() != aPTEF2->Nodes().Upper()) continue; for(Standard_Integer anEdgNode = aPTEF1->Nodes().Lower(); anEdgNode <= aPTEF1->Nodes().Upper(); anEdgNode++) { //Number of node const Standard_Integer aFNodF1 = aPTEF1->Nodes().Value(anEdgNode); const Standard_Integer aFNodF2 = aPTEF2->Nodes().Value(anEdgNode); const Standard_Integer aFNorm1FirstIndex = aNormArr1.Lower() + 3* (aFNodF1 - aPT1->Nodes().Lower()); const Standard_Integer aFNorm2FirstIndex = aNormArr2.Lower() + 3* (aFNodF2 - aPT2->Nodes().Lower()); gp_XYZ aNorm1(aNormArr1.Value(aFNorm1FirstIndex), aNormArr1.Value(aFNorm1FirstIndex+1), aNormArr1.Value(aFNorm1FirstIndex+2)); gp_XYZ aNorm2(aNormArr2.Value(aFNorm2FirstIndex), aNormArr2.Value(aFNorm2FirstIndex+1), aNormArr2.Value(aFNorm2FirstIndex+2)); const Standard_Real aDot = aNorm1 * aNorm2; if(aDot > aThresDot) { gp_XYZ aNewNorm = (aNorm1 + aNorm2).Normalized(); aNormArr1.ChangeValue(aFNorm1FirstIndex) = aNormArr2.ChangeValue(aFNorm2FirstIndex) = static_cast(aNewNorm.X()); aNormArr1.ChangeValue(aFNorm1FirstIndex+1) = aNormArr2.ChangeValue(aFNorm2FirstIndex+1) = static_cast(aNewNorm.Y()); aNormArr1.ChangeValue(aFNorm1FirstIndex+2) = aNormArr2.ChangeValue(aFNorm2FirstIndex+2) = static_cast(aNewNorm.Z()); aRetVal = Standard_True; } } } return aRetVal; } //======================================================================= //function : SortFaces //purpose : //======================================================================= void BRepLib::SortFaces (const TopoDS_Shape& Sh, TopTools_ListOfShape& LF) { LF.Clear(); TopTools_ListOfShape LTri,LPlan,LCyl,LCon,LSphere,LTor,LOther; TopExp_Explorer exp(Sh,TopAbs_FACE); TopLoc_Location l; Handle(Geom_Surface) S; for (; exp.More(); exp.Next()) { const TopoDS_Face& F = TopoDS::Face(exp.Current()); S = BRep_Tool::Surface(F, l); if (!S.IsNull()) { if (S->DynamicType() == STANDARD_TYPE(Geom_RectangularTrimmedSurface)) { S = Handle(Geom_RectangularTrimmedSurface)::DownCast (S)->BasisSurface(); } GeomAdaptor_Surface AS(S); switch (AS.GetType()) { case GeomAbs_Plane: { LPlan.Append(F); break; } case GeomAbs_Cylinder: { LCyl.Append(F); break; } case GeomAbs_Cone: { LCon.Append(F); break; } case GeomAbs_Sphere: { LSphere.Append(F); break; } case GeomAbs_Torus: { LTor.Append(F); break; } default: LOther.Append(F); } } else LTri.Append(F); } LF.Append(LPlan); LF.Append(LCyl ); LF.Append(LCon); LF.Append(LSphere); LF.Append(LTor ); LF.Append(LOther); LF.Append(LTri); } //======================================================================= //function : ReverseSortFaces //purpose : //======================================================================= void BRepLib::ReverseSortFaces (const TopoDS_Shape& Sh, TopTools_ListOfShape& LF) { LF.Clear(); // Use the allocator of the result LF for intermediate results TopTools_ListOfShape LTri(LF.Allocator()), LPlan(LF.Allocator()), LCyl(LF.Allocator()), LCon(LF.Allocator()), LSphere(LF.Allocator()), LTor(LF.Allocator()), LOther(LF.Allocator()); TopExp_Explorer exp(Sh,TopAbs_FACE); TopLoc_Location l; for (; exp.More(); exp.Next()) { const TopoDS_Face& F = TopoDS::Face(exp.Current()); const Handle(Geom_Surface)& S = BRep_Tool::Surface(F, l); if (!S.IsNull()) { GeomAdaptor_Surface AS(S); switch (AS.GetType()) { case GeomAbs_Plane: { LPlan.Append(F); break; } case GeomAbs_Cylinder: { LCyl.Append(F); break; } case GeomAbs_Cone: { LCon.Append(F); break; } case GeomAbs_Sphere: { LSphere.Append(F); break; } case GeomAbs_Torus: { LTor.Append(F); break; } default: LOther.Append(F); } } else LTri.Append(F); } LF.Append(LTri); LF.Append(LOther); LF.Append(LTor ); LF.Append(LSphere); LF.Append(LCon); LF.Append(LCyl ); LF.Append(LPlan); } //======================================================================= // function: BoundingVertex // purpose : //======================================================================= void BRepLib::BoundingVertex(const NCollection_List& theLV, gp_Pnt& theNewCenter, Standard_Real& theNewTol) { Standard_Integer aNb; // aNb=theLV.Extent(); if (aNb < 2) { return; } // else if (aNb==2) { Standard_Integer m, n; Standard_Real aR[2], dR, aD, aEps; TopoDS_Vertex aV[2]; gp_Pnt aP[2]; // aEps=RealEpsilon(); for (m=0; m= 0. gp_Vec aVD(aP[m], aP[n]); aD=aVD.Magnitude(); // if (aD<=dR || aD2) // compute the point // // issue 0027540 - sum of doubles may depend on the order // of addition, thus sort the coordinates for stable result Standard_Integer i; NCollection_Array1 aPoints(0, aNb-1); NCollection_List::Iterator aIt(theLV); for (i = 0; aIt.More(); aIt.Next(), ++i) { const TopoDS_Vertex& aVi = *((TopoDS_Vertex*)(&aIt.Value())); gp_Pnt aPi = BRep_Tool::Pnt(aVi); aPoints(i) = aPi; } // std::sort(aPoints.begin(), aPoints.end(), BRepLib_ComparePoints()); // gp_XYZ aXYZ(0., 0., 0.); for (i = 0; i < aNb; ++i) { aXYZ += aPoints(i).XYZ(); } aXYZ.Divide((Standard_Real)aNb); // gp_Pnt aP(aXYZ); // // compute the tolerance for the new vertex Standard_Real aTi, aDi, aDmax; // aDmax=-1.; aIt.Initialize(theLV); for (; aIt.More(); aIt.Next()) { TopoDS_Vertex& aVi=*((TopoDS_Vertex*)(&aIt.Value())); gp_Pnt aPi=BRep_Tool::Pnt(aVi); aTi=BRep_Tool::Tolerance(aVi); aDi=aP.SquareDistance(aPi); aDi=sqrt(aDi); aDi=aDi+aTi; if (aDi > aDmax) { aDmax=aDi; } } // theNewCenter = aP; theNewTol = aDmax; } } //======================================================================= //function : ExtendFace //purpose : //======================================================================= void BRepLib::ExtendFace(const TopoDS_Face& theF, const Standard_Real theExtVal, const Standard_Boolean theExtUMin, const Standard_Boolean theExtUMax, const Standard_Boolean theExtVMin, const Standard_Boolean theExtVMax, TopoDS_Face& theFExtended) { // Get face bounds BRepAdaptor_Surface aBAS(theF); Standard_Real aFUMin = aBAS.FirstUParameter(), aFUMax = aBAS.LastUParameter(), aFVMin = aBAS.FirstVParameter(), aFVMax = aBAS.LastVParameter(); const Standard_Real aTol = BRep_Tool::Tolerance(theF); // Surface to build the face Handle(Geom_Surface) aS; const GeomAbs_SurfaceType aType = aBAS.GetType(); // treat analytical surfaces first if (aType == GeomAbs_Plane || aType == GeomAbs_Sphere || aType == GeomAbs_Cylinder || aType == GeomAbs_Torus || aType == GeomAbs_Cone) { // Get basis transformed basis surface Handle(Geom_Surface) aSurf = Handle(Geom_Surface):: DownCast(aBAS.Surface().Surface()->Transformed(aBAS.Trsf())); // Get bounds of the basis surface Standard_Real aSUMin, aSUMax, aSVMin, aSVMax; aSurf->Bounds(aSUMin, aSUMax, aSVMin, aSVMax); Standard_Boolean isUPeriodic = aBAS.IsUPeriodic(); Standard_Real anUPeriod = isUPeriodic ? aBAS.UPeriod() : 0.0; if (isUPeriodic) { // Adjust face bounds to first period Standard_Real aDelta = aFUMax - aFUMin; aFUMin = Max(aSUMin, aFUMin + anUPeriod*Ceiling((aSUMin - aFUMin) / anUPeriod)); aFUMax = aFUMin + aDelta; } Standard_Boolean isVPeriodic = aBAS.IsVPeriodic(); Standard_Real aVPeriod = isVPeriodic ? aBAS.VPeriod() : 0.0; if (isVPeriodic) { // Adjust face bounds to first period Standard_Real aDelta = aFVMax - aFVMin; aFVMin = Max(aSVMin, aFVMin + aVPeriod*Ceiling((aSVMin - aFVMin) / aVPeriod)); aFVMax = aFVMin + aDelta; } // Enlarge the face Standard_Real anURes = 0., aVRes = 0.; if (theExtUMin || theExtUMax) anURes = aBAS.UResolution(theExtVal); if (theExtVMin || theExtVMax) aVRes = aBAS.VResolution(theExtVal); if (theExtUMin) aFUMin = Max(aSUMin, aFUMin - anURes); if (theExtUMax) aFUMax = Min(isUPeriodic ? aFUMin + anUPeriod : aSUMax, aFUMax + anURes); if (theExtVMin) aFVMin = Max(aSVMin, aFVMin - aVRes); if (theExtVMax) aFVMax = Min(isVPeriodic ? aFVMin + aVPeriod : aSVMax, aFVMax + aVRes); // Check if the periodic surface should become closed. // In this case, use the basis surface with basis bounds. const Standard_Real anEps = Precision::PConfusion(); if (isUPeriodic && Abs(aFUMax - aFUMin - anUPeriod) < anEps) { aFUMin = aSUMin; aFUMax = aSUMax; } if (isVPeriodic && Abs(aFVMax - aFVMin - aVPeriod) < anEps) { aFVMin = aSVMin; aFVMax = aSVMax; } aS = aSurf; } else { // General case Handle(Geom_BoundedSurface) aSB = Handle(Geom_BoundedSurface)::DownCast(BRep_Tool::Surface(theF)); if (aSB.IsNull()) { theFExtended = theF; return; } // Get surfaces bounds Standard_Real aSUMin, aSUMax, aSVMin, aSVMax; aSB->Bounds(aSUMin, aSUMax, aSVMin, aSVMax); Standard_Boolean isUClosed = aSB->IsUClosed(); Standard_Boolean isVClosed = aSB->IsVClosed(); // Check if the extension in necessary directions is done Standard_Boolean isExtUMin = Standard_False, isExtUMax = Standard_False, isExtVMin = Standard_False, isExtVMax = Standard_False; // UMin if (theExtUMin && !isUClosed && !Precision::IsInfinite(aSUMin)) { GeomLib::ExtendSurfByLength(aSB, theExtVal, 1, Standard_True, Standard_False); isExtUMin = Standard_True; } // UMax if (theExtUMax && !isUClosed && !Precision::IsInfinite(aSUMax)) { GeomLib::ExtendSurfByLength(aSB, theExtVal, 1, Standard_True, Standard_True); isExtUMax = Standard_True; } // VMin if (theExtVMin && !isVClosed && !Precision::IsInfinite(aSVMax)) { GeomLib::ExtendSurfByLength(aSB, theExtVal, 1, Standard_False, Standard_False); isExtVMin = Standard_True; } // VMax if (theExtVMax && !isVClosed && !Precision::IsInfinite(aSVMax)) { GeomLib::ExtendSurfByLength(aSB, theExtVal, 1, Standard_False, Standard_True); isExtVMax = Standard_True; } aS = aSB; // Get new bounds aS->Bounds(aSUMin, aSUMax, aSVMin, aSVMax); if (isExtUMin) aFUMin = aSUMin; if (isExtUMax) aFUMax = aSUMax; if (isExtVMin) aFVMin = aSVMin; if (isExtVMax) aFVMax = aSVMax; } BRepLib_MakeFace aMF(aS, aFUMin, aFUMax, aFVMin, aFVMax, aTol); theFExtended = *(TopoDS_Face*)&aMF.Shape(); if (theF.Orientation() == TopAbs_REVERSED) theFExtended.Reverse(); }