// 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 // TODO - not thread-safe static variables static Standard_Real thePrecision = Precision::Confusion(); static Handle(Geom_Plane) thePlane; //======================================================================= //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) ; curve_on_surface_reference.Load( 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 : SetEdgeTol //purpose : //======================================================================= static void SetEdgeTol(const TopoDS_Edge& E, const TopoDS_Face& F) { TopLoc_Location L; const Handle(Geom_Surface)& S = BRep_Tool::Surface(F,L); TopLoc_Location l = L.Predivided(E.Location()); const Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&E.TShape()); BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->ChangeCurves()); 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(E,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); TE->UpdateTolerance(d2); } //======================================================================= //function : SameParameter //purpose : //======================================================================= void BRepLib::SameParameter(const TopoDS_Shape& S, const Standard_Real Tolerance, const Standard_Boolean forced) { TopExp_Explorer ex(S,TopAbs_EDGE); TopTools_MapOfShape Done; BRep_Builder brB; while (ex.More()) { if (Done.Add(ex.Current())) { if (forced) { brB.SameRange(TopoDS::Edge(ex.Current()), Standard_False); brB.SameParameter(TopoDS::Edge(ex.Current()), Standard_False); } BRepLib::SameParameter(TopoDS::Edge(ex.Current()),Tolerance); } ex.Next(); } Done.Clear(); BRepAdaptor_Surface BS; for(ex.Init(S,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()); SetEdgeTol(E,curface); } } BRepLib::UpdateTolerances(S); } //================================================================ //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 //================================================================ 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); } 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 d2 = 0.; Standard_Real first = c3d->FirstParameter(); Standard_Real last = c3d->LastParameter(); Standard_Integer i = 0; for(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_Pnt Pcons = cons.Value(u); 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; if(temp > d2) d2 = temp; } Standard_Boolean ana = Standard_False; Standard_Real D2 = 0; Standard_Integer N1 = 0; Standard_Integer N2 = 0; Standard_Integer N3 = 0; for( 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( i = 1; i<= nbp+10; i++) if( dist(i) > 0 && dist(i) < 1.0 ) if( dist(i) > D2 ) D2 = dist(i); } //d2 = 1.5*sqrt(d2); d2 = (!ana) ? 1.5*sqrt(d2) : 1.5*sqrt(D2); if(d2<1.e-7) d2 = 1.e-7; return d2; } void BRepLib::SameParameter(const TopoDS_Edge& AnEdge, const Standard_Real Tolerance) { if (BRep_Tool::SameParameter(AnEdge)) return; 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(); Standard_Real f3d =0.,l3d =0.; TopLoc_Location L3d; Handle(Geom_Curve) C3d; const Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*) &AnEdge.TShape()); BRep_ListOfCurveRepresentation& CList = TE->ChangeCurves(); BRep_ListIteratorOfListOfCurveRepresentation It(CList); Standard_Boolean NotDone = Standard_True; while (NotDone && It.More()) { Handle(BRep_GCurve) GCurve = Handle(BRep_GCurve)::DownCast(It.Value()); if (!GCurve.IsNull() && GCurve->IsCurve3D()) { C3d = GCurve->Curve3D() ; f3d = GCurve->First(); l3d = GCurve->Last(); L3d = GCurve->Location() ; NotDone = Standard_False; } It.Next() ; } if(C3d.IsNull()) return; // 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)) { const Handle(Geom_Curve)& gtC = (*((Handle(Geom_TrimmedCurve)*)&C3d))->BasisCurve(); m_TrimmedPeriodical = gtC->IsPeriodic(); } // modified by NIZHNY-OCC486 Tue Aug 27 17:15:17 2002 . BRep_Builder B; 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_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(AnEdge); // Modified by skv - Thu Jun 3 12:39:20 2004 OCC5898 End Standard_Boolean SameRange = BRep_Tool::SameRange(AnEdge); Standard_Boolean YaPCu = Standard_False; 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 UResol = Max(GAS.UResolution(Tolerance), Precision::PConfusion()); Standard_Real VResol = Max(GAS.VResolution(Tolerance), Precision::PConfusion()); Standard_Real Tol2d = Min(UResol, VResol); 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(Tol2d, 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(GAC2d.GetType() == GeomAbs_BSplineCurve && GAC2d.Continuity() == GeomAbs_C0) { 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, Tol2d); 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,Tolerance,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),Tol2d); 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,Tolerance)) { 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,Tolerance), 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,Tolerance), cont, maxdeg, 10); if(AppCurPar.IsDone() || AppCurPar.HasResult()) { bs2d = AppCurPar.Curve2d1(); GAC2d.Load(bs2d,f3d,l3d); curPC = bs2d; if(Abs(bs2d->FirstParameter() - fC0) > Tol2d || Abs(bs2d->LastParameter() - lC0) > Tol2d ) { 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 : Tolerance; Approx_SameParameter SameP(HC,HC2d,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 IsSameP = 0; } else IsSameP = 0; // Modified by skv - Thu Jun 3 12:39:19 2004 OCC5898 Begin if (!IsSameP) { if (anEdgeTol > error) { maxdist = Max(maxdist, anEdgeTol); IsSameP = Standard_True; } } // Modified by skv - Thu Jun 3 12:39:20 2004 OCC5898 End } } It.Next() ; } B.Range(AnEdge,f3d,l3d); B.SameRange(AnEdge,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()); TopoDS_Vertex V1,V2; TopExp::Vertices(AnEdge,V1,V2); if (!V1.IsNull()) B.UpdateVertex(V1,maxdist); if (!V2.IsNull()) B.UpdateVertex(V2,maxdist); TE->Modified(Standard_True); TE->Tolerance(maxdist); } B.SameParameter(AnEdge,Standard_True); } } //======================================================================= //function : UpdateTolerances //purpose : //======================================================================= void BRepLib::UpdateTolerances(const TopoDS_Shape& aShape, const Standard_Boolean verifyTolerance) { // Harmonize tolerances // with rule Tolerance(VERTEX)>=Tolerance(EDGE)>=Tolerance(FACE) BRep_Builder B; Standard_Real tol=0; if (verifyTolerance) { // 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(aShape, 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)*)&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; } const Handle(BRep_TFace)& Tf = *((Handle(BRep_TFace)*)&curf.TShape()); Tf->Tolerance(tol); } } } //Process edges TopTools_IndexedDataMapOfShapeListOfShape parents; TopExp::MapShapesAndAncestors(aShape, 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()) { tol=Max(tol, BRep_Tool::Tolerance(TopoDS::Face(lConx.Value()))); } // Update can only increase tolerance, so if the edge has a greater // tolerance than its faces it is not concerned B.UpdateEdge(TopoDS::Edge(parents.FindKey(iCur)), tol); } //Vertices are processed parents.Clear(); TopExp::MapShapesAndAncestors(aShape, TopAbs_VERTEX, TopAbs_EDGE, parents); TColStd_MapOfTransient Initialized; TopTools_MapOfShape Done; Standard_Integer nbV = parents.Extent(); for (iCur=1; iCur<=nbV; iCur++) { tol=0; Done.Clear(); 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()); if(!Done.Add(E)) continue; tol=Max(tol, BRep_Tool::Tolerance(E)); 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); if (verifyTolerance) { // ASet minimum value of the tolerance // Attention to sharing of the vertex by other shapes const Handle(BRep_TVertex)& TV = *((Handle(BRep_TVertex)*)&V.TShape()); if (Initialized.Add(TV)) TV->Tolerance(tol); else B.UpdateVertex(V, tol); } else { // Update can only increase tolerance, so if the edge has a greater // tolerance than its faces it is not concerned B.UpdateVertex(V, tol); } } } //======================================================================= //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; } //======================================================================= //function : tgtfaces //purpose : check the angle at the border between two squares. // Two shares should have a shared front edge. //======================================================================= static Standard_Boolean tgtfaces(const TopoDS_Edge& Ed, const TopoDS_Face& F1, const TopoDS_Face& F2, const Standard_Real ta, const Standard_Boolean couture) { // Check if pcurves exist on both faces of edge Standard_Real aFirst,aLast; Handle(Geom2d_Curve) aCurve; aCurve = BRep_Tool::CurveOnSurface(Ed,F1,aFirst,aLast); if(aCurve.IsNull()) return Standard_False; aCurve = BRep_Tool::CurveOnSurface(Ed,F2,aFirst,aLast); if(aCurve.IsNull()) return Standard_False; Standard_Real u; TopoDS_Edge E = Ed; BRepAdaptor_Surface aBAS1(F1,Standard_False); BRepAdaptor_Surface aBAS2(F2,Standard_False); Handle(BRepAdaptor_HSurface) HS1 = new BRepAdaptor_HSurface(aBAS1); Handle(BRepAdaptor_HSurface) HS2; if(couture) HS2 = HS1; else HS2 = new BRepAdaptor_HSurface(aBAS2); E.Orientation(TopAbs_FORWARD); Handle(BRepAdaptor_HCurve2d) HC2d1 = new BRepAdaptor_HCurve2d(); HC2d1->ChangeCurve2d().Initialize(E,F1); if(couture) E.Orientation(TopAbs_REVERSED); Handle(BRepAdaptor_HCurve2d) HC2d2 = new BRepAdaptor_HCurve2d(); HC2d2->ChangeCurve2d().Initialize(E,F2); Adaptor3d_CurveOnSurface C1(HC2d1,HS1); Adaptor3d_CurveOnSurface C2(HC2d2,HS2); Standard_Boolean rev1 = (F1.Orientation() == TopAbs_REVERSED); Standard_Boolean rev2 = (F2.Orientation() == TopAbs_REVERSED); Standard_Real f,l,eps, angmax = -M_PI; Standard_Real ang =0.; BRep_Tool::Range(E,f,l); Extrema_LocateExtPC ext; Standard_Boolean IsInitialized = Standard_False; eps = (l - f)/100.; f += eps; // to avoid calculations on l -= eps; // points of pointed squares. gp_Pnt2d p; gp_Pnt pp1,pp2;//,PP; gp_Vec du,dv; gp_Vec d1,d2; Standard_Real uu, vv, norm; Standard_Integer i; Standard_Boolean Nok; for(i = 0; (i<= 20) && (angmax<=ta) ; i++){ // First suppose that this is sameParameter Nok = Standard_True; u = f + (l-f)*i/20; HC2d1->D0(u,p); HS1->D1(p.X(),p.Y(),pp1,du,dv); d1 = (du.Crossed(dv)); norm = d1.Magnitude(); if (norm > 1.e-12) d1 /= norm; else Nok=Standard_False; if(rev1) d1.Reverse(); HC2d2->D0(u,p); HS2->D1(p.X(), p.Y(), pp2, du, dv); d2 = (du.Crossed(dv)); norm = d2.Magnitude(); if (norm> 1.e-12) d2 /= norm; else Nok=Standard_False; if(rev2) d2.Reverse(); if (Nok) ang = d1.Angle(d2); if (Nok &&(ang > ta)) { // Refine by projection if (! IsInitialized ) { ext.Initialize(C2,f,l,Precision::PConfusion()); IsInitialized = Standard_True; } ext.Perform(pp1,u); if(ext.IsDone() && ext.IsMin()){ Extrema_POnCurv poc = ext.Point(); Standard_Real v = poc.Parameter(); HC2d2->D0(v,p); p.Coord(uu,vv); HS2->D1(p.X(), p.Y(), pp2, du, dv); d2 = (du.Crossed(dv)); norm = d2.Magnitude(); if (norm> 1.e-12) d2 /= norm; else Nok = Standard_False; if(rev2) d2.Reverse(); if (Nok) ang = d1.Angle(d2); } } if(ang >= angmax) angmax = ang; } return (angmax<=ta); } //======================================================================= // 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) { BRep_Builder B; TopTools_IndexedDataMapOfShapeListOfShape M; TopExp::MapShapesAndAncestors(S,TopAbs_EDGE,TopAbs_FACE,M); TopTools_ListIteratorOfListOfShape It; TopExp_Explorer Ex; TopoDS_Face F1,F2; Standard_Boolean found, couture; for(Standard_Integer i = 1; i <= M.Extent(); i++){ TopoDS_Edge E = TopoDS::Edge(M.FindKey(i)); found = Standard_False; couture = Standard_False; F1.Nullify(); for(It.Initialize(M.FindFromIndex(i));It.More() && !found;It.Next()){ if(F1.IsNull()) { F1 = TopoDS::Face(It.Value()); } else { if(!F1.IsSame(TopoDS::Face(It.Value()))){ found = Standard_True; F2 = TopoDS::Face(It.Value()); } } } 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; couture = Standard_True; F2 = F1; } } } if(found){ if(BRep_Tool::Continuity(E,F1,F2)<=GeomAbs_C0){ try { if(tgtfaces(E, F1, F2, TolAng, couture)){ B.Continuity(E,F1,F2,GeomAbs_G1); } } catch(Standard_Failure) { } } } } } //======================================================================= // function : EncodeRegularity // purpose : code the regularity between 2 faces on an 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 { if( tgtfaces(E, F1, F2, TolAng, F1.IsEqual(F2))) { B.Continuity(E,F1,F2,GeomAbs_G1); } } catch(Standard_Failure) { } } } //======================================================================= // 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 cout << "BRepLib::EnsureNormalConsistency(): Cannot find normal!" << 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(); 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)*)&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(); 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)*)&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(LTri); LF.Append(LOther); LF.Append(LTor ); LF.Append(LSphere); LF.Append(LCon); LF.Append(LCyl ); LF.Append(LPlan); }