1 // Created on: 1994-10-21
2 // Created by: Bruno DUMORTIER
3 // Copyright (c) 1994-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and / or modify it
9 // under the terms of the GNU Lesser General Public version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
19 #include <BRepFill_TrimSurfaceTool.ixx>
21 #include <Precision.hxx>
23 #include <Adaptor3d_SurfaceOfRevolution.hxx>
24 #include <AppParCurves_MultiCurve.hxx>
25 #include <BRepFill_ComputeCLine.hxx>
26 #include <BRepFill_MultiLine.hxx>
27 #include <BRepIntCurveSurface_Inter.hxx>
28 #include <BRepFill_ApproxSeewing.hxx>
29 #include <BRep_Tool.hxx>
31 #include <BSplCLib.hxx>
34 #include <gp_Sphere.hxx>
35 #include <gp_Cone.hxx>
36 #include <gp_Torus.hxx>
37 #include <gp_Cylinder.hxx>
38 #include <Geom2dInt_GInter.hxx>
39 #include <Geom2dAPI_ProjectPointOnCurve.hxx>
40 #include <Geom2dAdaptor_Curve.hxx>
41 #include <Geom2d_BSplineCurve.hxx>
42 #include <Geom2d_TrimmedCurve.hxx>
43 #include <GeomAdaptor_Surface.hxx>
44 #include <GeomAdaptor_HCurve.hxx>
45 #include <Geom_Plane.hxx>
46 #include <Geom_SurfaceOfRevolution.hxx>
47 #include <Geom_BSplineCurve.hxx>
48 #include <Geom_TrimmedCurve.hxx>
49 #include <GeomProjLib.hxx>
50 #include <IntRes2d_IntersectionPoint.hxx>
51 #include <IntRes2d_IntersectionSegment.hxx>
52 #include <Precision.hxx>
53 #include <StdFail_NotDone.hxx>
54 #include <Standard_NotImplemented.hxx>
55 #include <TColgp_Array1OfPnt.hxx>
56 #include <TColStd_Array1OfReal.hxx>
57 #include <TColStd_Array1OfInteger.hxx>
58 #include <TopAbs_State.hxx>
61 #include <TopoDS_Vertex.hxx>
64 #include <DrawTrSurf.hxx>
68 static Standard_Boolean Affich = Standard_False;
69 static Standard_Integer NBCALL = 1;
72 //=======================================================================
73 //function : BRepFill_TrimSurfaceTool
74 //purpose : Initialisation with two neighbor faces
75 // Edge1 and Edge2 are parallel edges corresponding
76 // to minimum iso on F1 and F2 respectively.
77 // ie Edge1 is Umin or VMin on F1.
78 // Inv1 and Inv2 show if Edge1 and Edge2 are
80 //=======================================================================
82 BRepFill_TrimSurfaceTool::BRepFill_TrimSurfaceTool
83 (const Handle(Geom2d_Curve)& Bis,
84 const TopoDS_Face& Face1,
85 const TopoDS_Face& Face2,
86 const TopoDS_Edge& Edge1,
87 const TopoDS_Edge& Edge2,
88 const Standard_Boolean Inv1,
89 const Standard_Boolean Inv2 ) :
100 cout << " ---------->TrimSurfaceTool : NBCALL = " << NBCALL << endl;
105 sprintf(name,"FACE1_%d",NBCALL);
106 DBRep::Set(name,myFace1);
108 sprintf(name,"FACE2_%d",NBCALL);
109 DBRep::Set(name,myFace2);
111 sprintf(name,"EDGE1_%d",NBCALL);
112 DBRep::Set(name,myEdge1);
114 sprintf(name,"EDGE2_%d",NBCALL);
115 DBRep::Set(name,myEdge2);
117 sprintf(name,"BISSEC_%d",NBCALL);
118 DrawTrSurf::Set(name,myBis);
126 //=======================================================================
128 //purpose : Order the sequence of points by increasing x.
129 //=======================================================================
131 static void Bubble(TColgp_SequenceOfPnt& Seq)
133 Standard_Boolean Invert = Standard_True;
134 Standard_Integer NbPoints = Seq.Length();
136 Invert = Standard_False;
137 for ( Standard_Integer i = 1; i < NbPoints; i++) {
138 gp_Pnt P1 = Seq.Value(i);
139 gp_Pnt P2 = Seq.Value(i+1);
142 Invert = Standard_True;
149 //=======================================================================
150 //function : EvalPhase
152 //=======================================================================
154 static Standard_Real EvalPhase(const TopoDS_Edge& Edge,
155 const TopoDS_Face& Face,
156 const GeomAdaptor_Surface& GAS,
159 gp_Pnt2d PE1,PE2,PF1,PF2;
161 Standard_Real V = 0.;
162 BRep_Tool::UVPoints(Edge,Face,PE1,PE2);
164 TopExp_Explorer Exp(Face,TopAbs_EDGE);
165 for (; Exp.More(); Exp.Next()) {
166 if ( !TopoDS::Edge(Exp.Current()).IsSame(Edge)) {
167 BRep_Tool::UVPoints(TopoDS::Edge(Exp.Current()),Face,PF1,PF2);
168 V = ( Abs(PF1.Y() - VDeg) > Abs(PF2.Y() - VDeg)) ? PF1.Y() : PF2.Y();
172 gp_Pnt P = GAS.Value(0., V);
174 if ( gp_Vec(Axis.Location(), P).Dot(Axis.XDirection()) < 0.)
181 //=======================================================================
182 //function : EvalParameters
184 //=======================================================================
186 static void EvalParameters(const TopoDS_Edge& Edge,
187 const TopoDS_Face& Face,
188 const Handle(Geom2d_Curve)& Bis ,
189 TColgp_SequenceOfPnt& Seq )
191 Standard_Boolean Degener = BRep_Tool::Degenerated(Edge);
192 // return curves 3d associated to edges.
196 Handle(Geom_TrimmedCurve) CT;
197 Handle(Geom_Plane) Plane = new Geom_Plane(0,0,1,0);
199 Geom2dInt_GInter Intersector;
201 Standard_Integer NbPoints, NbSegments;
202 Standard_Real U1, U2;
205 // Standard_Real Tol = Precision::Intersection();
206 // modified by NIZHNY-EAP Wed Dec 22 15:00:51 1999 ___BEGIN___
207 Standard_Real Tol = 1.e-6; // BRepFill_Precision();
208 Standard_Real TolC = 0.;
211 Handle(Geom_Curve) C = BRep_Tool::Curve(Edge,L,f,l);
212 CT = new Geom_TrimmedCurve(C,f,l);
213 CT->Transform(L.Transformation());
214 // projection of 3d curves in the plane xOy
215 Handle(Geom2d_Curve) C2d = GeomProjLib::Curve2d(CT,Plane);
217 Geom2dAdaptor_Curve AC(C2d);
218 Geom2dAdaptor_Curve ABis(Bis);
220 Intersector = Geom2dInt_GInter(ABis, AC, TolC, Tol);
222 if ( !Intersector.IsDone()) {
223 StdFail_NotDone::Raise("BRepFill_TrimSurfaceTool::IntersectWith");
226 NbPoints = Intersector.NbPoints();
229 // try to elongate curves and enlarge tolerance
231 // don't do it rightaway from the beginning in order not to get
232 // extra solutions those would cause *Exception*: incoherent intersection
234 GeomAbs_CurveType CType = AC.GetType(), BisType = ABis.GetType();
235 Standard_Boolean canElongateC = !(CType == GeomAbs_BezierCurve ||
236 CType == GeomAbs_BSplineCurve ||
237 CType == GeomAbs_OtherCurve);
238 Standard_Boolean canElongateBis = !(BisType == GeomAbs_BezierCurve ||
239 BisType == GeomAbs_BSplineCurve ||
240 BisType == GeomAbs_OtherCurve);
242 Handle(Geom2d_TrimmedCurve) TBis = Handle(Geom2d_TrimmedCurve)::DownCast(Bis);
243 Handle(Geom2d_TrimmedCurve) TC2d = Handle(Geom2d_TrimmedCurve)::DownCast(C2d);
246 TC2d->SetTrim(TC2d->FirstParameter() - Tol, TC2d->LastParameter() + Tol);
249 if (canElongateBis) {
250 TBis->SetTrim(TBis->FirstParameter() - Tol, TBis->LastParameter() + Tol);
253 Intersector = Geom2dInt_GInter(ABis, AC, TolC, Tol*10);
255 if ( !Intersector.IsDone()) {
256 StdFail_NotDone::Raise("BRepFill_TrimSurfaceTool::IntersectWith");
259 NbPoints = Intersector.NbPoints();
261 // modified by NIZHNY-EAP Wed Dec 22 15:00:56 1999 ___END___
264 for ( Standard_Integer i = 1; i <= NbPoints; i++) {
265 U1 = Intersector.Point(i).ParamOnFirst();
266 U2 = Intersector.Point(i).ParamOnSecond();
267 P = gp_Pnt(U1,U2,0.);
272 NbSegments = Intersector.NbSegments();
274 if (NbSegments > 0) {
276 cout << " IntersectWith : " << NbSegments
277 << " Segments of intersection" << endl;
279 IntRes2d_IntersectionSegment Seg;
280 for ( Standard_Integer i = 1; i <= NbSegments; i++) {
281 Seg = Intersector.Segment(i);
282 U1 = Seg.FirstPoint().ParamOnFirst();
283 U1 += Seg.LastPoint().ParamOnFirst();
285 U2 = Seg.FirstPoint().ParamOnSecond();
286 U2 += Seg.LastPoint().ParamOnSecond();
288 P = gp_Pnt(U1,U2,0.);
292 // Order the sequence by increasing parameter on the bissectrice.
295 // modified by NIZHNY-EAP Fri Dec 24 18:47:24 1999 ___BEGIN___
296 // Remove double points
298 for ( Standard_Integer i = 1; i < NbPoints; i++) {
301 if ( P2.X()-P1.X() < Tol ) {
302 // cout<<"REMOVE "<<P1.X()<<endl;
307 // modified by NIZHNY-EAP Fri Dec 24 18:47:28 1999 ___END___
310 // the edge is degenerated : the point and it is found if it is
311 // on the bissectrice.
313 gp_Pnt P3d = BRep_Tool::Pnt( TopExp::FirstVertex(Edge));
314 gp_Pnt2d P2d( P3d.X(), P3d.Y());
316 Standard_Real UBis = Bis->FirstParameter();
317 gp_Pnt2d PBis = Bis->Value( UBis);
319 // modified by NIZHNY-EAP Wed Jan 12 11:41:30 2000 ___BEGIN___
320 // inside gp_Pnt2d::Distance
321 // Infinite * Infinite => Exception: DefaultNumericError
322 // Case encounered: UBis < Precision::Infinite()
323 // but PBis.X() > Precision::Infinite()
324 if (Precision::IsPositiveInfinite(Abs(PBis.X())) ||
325 Precision::IsPositiveInfinite(Abs(PBis.Y())) ||
326 PBis.Distance(P2d) > Tol) {
327 // modified by NIZHNY-EAP Wed Jan 12 11:41:40 2000 ___END___
328 UBis = Bis->LastParameter();
329 if (UBis >= Precision::Infinite()) return;
330 PBis = Bis->Value( UBis);
331 if ( PBis.Distance(P2d) > Tol) return;
334 // evaluate parameter intersection.
335 Handle(Geom_Surface) GS = BRep_Tool::Surface(Face);
336 GeomAdaptor_Surface GAS(GS);
339 Standard_Real Phase = 0.;
341 switch ( GAS.GetType()) {
344 Axis = GAS.Sphere().Position(); break;
346 //----------------------------------------------------------
347 // if myFace1 is not at the same side of the apex as the point
348 // of parameter 0 0 on the cone => phase = M_PI.
349 //----------------------------------------------------------
350 Axis = GAS.Cone().Position();
351 Phase = EvalPhase(Edge,Face,GAS,Axis);
355 Axis = GAS.Torus().Position(); break;
356 case GeomAbs_Cylinder:
357 Axis = GAS.Cylinder().Position(); break;
358 case GeomAbs_SurfaceOfRevolution: {
359 //----------------------------------------------------------
360 // if myFace1 is not at the same side of the apex as the point
361 // of parameter 0 0 on the cone => phase = M_PI.
362 //----------------------------------------------------------
363 Handle(Geom_SurfaceOfRevolution) GSRev =
364 Handle(Geom_SurfaceOfRevolution)::DownCast(GS);
365 Handle(GeomAdaptor_HCurve) HC =
366 new GeomAdaptor_HCurve(GSRev->BasisCurve());
367 Adaptor3d_SurfaceOfRevolution ASRev(HC,GAS.AxeOfRevolution());
369 Phase = EvalPhase(Edge,Face,GAS,Axis);
373 Standard_NotImplemented::Raise(" BRepFill_TrimSurfaceTool");
376 gp_Vec2d D12d = Bis->DN(UBis,1);
377 gp_Vec D1( D12d.X(), D12d.Y(), 0.);
379 Standard_Real U = Axis.XDirection().
380 AngleWithRef(D1,Axis.XDirection()^Axis.YDirection());
382 if ( U < 0.) U += 2*M_PI;
384 P = gp_Pnt(Bis->FirstParameter(), U, 0.);
390 //=======================================================================
391 //function : IntersectWith
393 //=======================================================================
395 void BRepFill_TrimSurfaceTool::IntersectWith
396 (const TopoDS_Edge& EdgeOnF1,
397 const TopoDS_Edge& EdgeOnF2,
398 TColgp_SequenceOfPnt& Points )
402 TColgp_SequenceOfPnt Points2;
404 EvalParameters(EdgeOnF1, myFace1, myBis, Points);
405 EvalParameters(EdgeOnF2, myFace2, myBis, Points2);
407 StdFail_NotDone_Raise_if
408 ( Points.Length() != Points2.Length(),
409 "BRepFill_TrimSurfaceTool::IntersectWith: incoherent intersection");
412 Standard_Integer NbPoints = Points.Length();
413 for ( Standard_Integer i = 1; i <= NbPoints; i++) {
415 PSeq.SetZ((Points2.Value(i)).Y());
416 Points.SetValue(i,PSeq);
417 // cout<<"BisPar "<<PSeq.X()<<endl;
422 //=======================================================================
423 //function : IsOnFace
425 //=======================================================================
427 Standard_Boolean BRepFill_TrimSurfaceTool::IsOnFace
428 (const gp_Pnt2d& Point) const
430 gp_Pnt P( Point.X(), Point.Y(), 0.);
431 gp_Lin Line( P, gp::DZ());
433 BRepIntCurveSurface_Inter Inter;
435 // eval if is on face 1
436 // modified by NIZHNY-EAP Fri Jan 21 09:49:09 2000 ___BEGIN___
437 Inter.Init(myFace1, Line, 1e-6);//Precision::PConfusion());
438 if (Inter.More()) return Standard_True;
440 // eval if is on face 2
441 Inter.Init(myFace2, Line, 1e-6);//Precision::PConfusion());
443 // modified by NIZHNY-EAP Fri Jan 21 09:49:14 2000 ___END___
447 //=======================================================================
450 //=======================================================================
452 Standard_Real BRepFill_TrimSurfaceTool::ProjOn(const gp_Pnt2d& Point,
453 const TopoDS_Edge& Edge) const
460 Handle(Geom_Curve) C1 = BRep_Tool::Curve(Edge,L,f,l);
461 Handle(Geom_TrimmedCurve) CT = new Geom_TrimmedCurve(C1,f,l);
462 CT->Transform(L.Transformation());
464 // projection of curves 3d in the plane xOy
465 Handle(Geom_Plane) Plane = new Geom_Plane(0,0,1,0);
466 Handle(Geom2d_Curve) C2d = GeomProjLib::Curve2d(CT,Plane);
468 // evaluate the projection of the point on the curve.
469 Geom2dAPI_ProjectPointOnCurve Projector(Point, C2d);
473 Projector.LowerDistance();
475 if ( Dist > Precision::Confusion() ) {
476 cout << " *** WARNING TrimSurfaceTool: *** " << endl;
477 cout << " --> the point is not on the edge" <<endl;
478 cout << " distance = " << Dist << endl;
482 Standard_Real U = Projector.LowerDistanceParameter();
487 //=======================================================================
490 //=======================================================================
492 void BRepFill_TrimSurfaceTool::Project
493 (const Standard_Real U1,
494 const Standard_Real U2,
495 Handle(Geom_Curve)& Curve,
496 Handle(Geom2d_Curve)& PCurve1,
497 Handle(Geom2d_Curve)& PCurve2,
498 GeomAbs_Shape& Cont) const
500 Handle(Geom2d_TrimmedCurve) CT =
501 new Geom2d_TrimmedCurve(myBis,U1,U2);
502 BRepFill_MultiLine ML(myFace1,myFace2,
503 myEdge1,myEdge2,myInv1,myInv2,CT);
505 Cont = ML.Continuity();
507 if ( ML.IsParticularCase()) {
508 ML.Curves(Curve,PCurve1,PCurve2);
511 BRepFill_ApproxSeewing AppSeew(ML);
513 Curve = AppSeew.Curve();
514 PCurve1 = AppSeew.CurveOnF1();
515 PCurve2 = AppSeew.CurveOnF2();