1 // Created on: 1999-04-27
2 // Created by: Andrey BETENEV
3 // Copyright (c) 1999-1999 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 under
9 // the terms of the GNU Lesser General Public License 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.
17 // pdn 01.06.99 S4205: handling not-SameRange edges
18 // abv 22.07.99 implementing patch indices
19 // svv 10.01.00 porting on DEC
21 #include <Bnd_Box2d.hxx>
22 #include <BndLib_Add2dCurve.hxx>
23 #include <BRep_Builder.hxx>
24 #include <BRep_Tool.hxx>
25 #include <BRepTools.hxx>
26 #include <BRepTopAdaptor_FClass2d.hxx>
27 #include <Extrema_ExtPC2d.hxx>
28 #include <Geom2d_Curve.hxx>
29 #include <Geom2d_Line.hxx>
30 #include <Geom2dAdaptor_Curve.hxx>
31 #include <Geom2dInt_GInter.hxx>
32 #include <Geom_Curve.hxx>
33 #include <Geom_Surface.hxx>
34 #include <GeomAdaptor_Surface.hxx>
35 #include <gp_Dir2d.hxx>
36 #include <gp_Lin2d.hxx>
38 #include <gp_Pnt2d.hxx>
39 #include <IntRes2d_Domain.hxx>
40 #include <IntRes2d_IntersectionPoint.hxx>
41 #include <IntRes2d_IntersectionSegment.hxx>
42 #include <Precision.hxx>
43 #include <ShapeAnalysis.hxx>
44 #include <ShapeAnalysis_Curve.hxx>
45 #include <ShapeAnalysis_Edge.hxx>
46 #include <ShapeAnalysis_Surface.hxx>
47 #include <ShapeAnalysis_TransferParameters.hxx>
48 #include <ShapeAnalysis_TransferParametersProj.hxx>
49 #include <ShapeAnalysis_WireOrder.hxx>
50 #include <ShapeBuild_Edge.hxx>
51 #include <ShapeBuild_ReShape.hxx>
52 #include <ShapeBuild_Vertex.hxx>
53 #include <ShapeExtend.hxx>
54 #include <ShapeExtend_CompositeSurface.hxx>
55 #include <ShapeExtend_WireData.hxx>
56 #include <ShapeFix_ComposeShell.hxx>
57 #include <ShapeFix_Edge.hxx>
58 #include <ShapeFix_Face.hxx>
59 #include <ShapeFix_Wire.hxx>
60 #include <ShapeFix_WireSegment.hxx>
61 #include <Standard_Type.hxx>
62 #include <TColgp_SequenceOfPnt2d.hxx>
63 #include <TColStd_Array1OfBoolean.hxx>
64 #include <TColStd_Array1OfInteger.hxx>
65 #include <TColStd_Array1OfReal.hxx>
66 #include <TColStd_HArray1OfReal.hxx>
67 #include <TColStd_SequenceOfReal.hxx>
68 #include <TopLoc_Location.hxx>
70 #include <TopoDS_Edge.hxx>
71 #include <TopoDS_Face.hxx>
72 #include <TopoDS_Iterator.hxx>
73 #include <TopoDS_Shape.hxx>
74 #include <TopoDS_Shell.hxx>
75 #include <TopoDS_Vertex.hxx>
76 #include <TopoDS_Wire.hxx>
77 #include <TopTools_DataMapOfShapeListOfShape.hxx>
78 #include <TopTools_MapOfShape.hxx>
80 IMPLEMENT_STANDARD_RTTIEXT(ShapeFix_ComposeShell,ShapeFix_Root)
82 //=======================================================================
83 //function : ShapeFix_ComposeShell
85 //=======================================================================
86 ShapeFix_ComposeShell::ShapeFix_ComposeShell () :
87 myStatus(0), myClosedMode(Standard_False)
89 myTransferParamTool = new ShapeAnalysis_TransferParametersProj;
93 //=======================================================================
96 //=======================================================================
98 void ShapeFix_ComposeShell::Init (const Handle(ShapeExtend_CompositeSurface) &Grid,
99 const TopLoc_Location& L,
100 const TopoDS_Face &Face,
101 const Standard_Real Prec)
104 myUClosed = myGrid->IsUClosed();
105 myVClosed = myGrid->IsVClosed();
106 myUPeriod = myGrid->UJointValue(myGrid->NbUPatches()+1) - myGrid->UJointValue(1);
107 myVPeriod = myGrid->VJointValue(myGrid->NbVPatches()+1) - myGrid->VJointValue(1);
109 // DTK-CKY 100531 : protection against very thin face
110 // Test "isclosed" should be filtered on the overall (non trimmed) surface, must be closed
111 Handle(Geom_Surface) theSurface = BRep_Tool::Surface(Face,myLoc);
112 Standard_Real U0,U1,V0,V1;
113 theSurface->Bounds(U0,U1,V0,V1);
115 gp_Pnt P0 = theSurface->Value(U0,(V0+V1)/2.);
116 gp_Pnt P1 = theSurface->Value(U1,(V0+V1)/2.);
117 if (P0.Distance(P1) > Precision::Confusion()*10)
118 myUClosed = Standard_False;
121 gp_Pnt P0 = theSurface->Value((U0+U1)/2.,V0);
122 gp_Pnt P1 = theSurface->Value((U0+U1)/2.,V1);
123 if (P0.Distance(P1) > Precision::Confusion()*10)
124 myVClosed = Standard_False;
126 // DTK-CKY 100531 end
130 TopoDS_Shape tmpF = Face.Oriented ( TopAbs_FORWARD );
131 myFace = TopoDS::Face ( tmpF ); // for correct dealing with seams
132 myOrient = Face.Orientation();
134 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_OK );
136 // Compute resolution (checking in 2d is necessary for splitting
137 // degenerated edges and avoiding NotClosed)
138 myUResolution = myVResolution = RealLast();
139 for ( Standard_Integer i=1; i <= myGrid->NbUPatches(); i++ ) {
140 Standard_Real uRange = myGrid->UJointValue(i+1)-myGrid->UJointValue(i);
141 for ( Standard_Integer j=1; j <= myGrid->NbVPatches(); j++ ) {
142 Standard_Real vRange = myGrid->VJointValue(j+1)-myGrid->VJointValue(j);
143 Standard_Real u1,u2,v1,v2;
144 myGrid->Patch(i,j)->Bounds(u1,u2,v1,v2);
145 GeomAdaptor_Surface GAS ( myGrid->Patch(i,j) );
146 Standard_Real ures = GAS.UResolution ( 1. )*uRange/(u2-u1);
147 Standard_Real vres = GAS.VResolution ( 1. )*vRange/(v2-v1);
148 if ( ures >0. && myUResolution > ures ) myUResolution = ures;
149 if ( vres >0. && myVResolution > vres ) myVResolution = vres;
152 if ( myUResolution == RealLast() ) myUResolution = ::Precision::Parametric ( 1. );
153 if ( myVResolution == RealLast() ) myVResolution = ::Precision::Parametric ( 1. );
156 //=======================================================================
159 //=======================================================================
161 Standard_Boolean ShapeFix_ComposeShell::Perform ()
163 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_OK );
164 myInvertEdgeStatus = Standard_False;
166 ShapeFix_SequenceOfWireSegment seqw; // working data: wire segments
168 // Init seqw by initial set of wires (with corresponding orientation)
170 if(seqw.Length() == 0) {
171 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_FAIL6 );
172 return Standard_False;
175 // Split edges in the wires by grid and add internal segments of grid (parts of cutting lines)
176 SplitByGrid ( seqw );
178 // Split all the wires into segments by common vertices (intersections)
181 // Then, collect resulting wires
182 ShapeFix_SequenceOfWireSegment wires; // resulting wires
183 CollectWires ( wires, seqw );
185 // And construct resulting faces
186 TopTools_SequenceOfShape faces;
187 DispatchWires ( faces, wires );
189 // Finally, construct resulting shell
190 if ( faces.Length() !=1 ) {
194 for ( Standard_Integer i=1; i <= faces.Length(); i++ )
195 B.Add ( S, faces(i) );
198 else myResult = faces(1);
199 myResult.Orientation ( myOrient );
201 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE1 );
202 return Standard_True;
205 //=======================================================================
206 //function : SplitEdges
208 //=======================================================================
210 void ShapeFix_ComposeShell::SplitEdges ()
212 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_OK );
214 ShapeFix_SequenceOfWireSegment seqw; // working data: wire segments
216 // Init seqw by initial set of wires (with corresponding orientation)
219 // Split edges in the wires by grid and add internal segments of grid (parts of cutting lines)
220 SplitByGrid ( seqw );
223 //=======================================================================
226 //=======================================================================
228 const TopoDS_Shape& ShapeFix_ComposeShell::Result () const
233 //=======================================================================
236 //=======================================================================
238 Standard_Boolean ShapeFix_ComposeShell::Status (const ShapeExtend_Status status) const
240 return ShapeExtend::DecodeStatus ( myStatus, status );
243 //=======================================================================
244 // PRIVATE (working) METHODS
245 //=======================================================================
247 #define TOLINT 1.e-10 // precision for intersection
249 // Local definitions: characteristics of intersection point
251 #define IOR_UNDEF 0 // undefined side
252 #define IOR_LEFT 1 // to left side of cutting line
253 #define IOR_RIGHT 2 // to right side of cutting line
254 #define IOR_BOTH 3 // crossing
255 #define IOR_POS 4 // in case of cycle on full period, whether first point is right
257 #define ITP_INTER 8 // crossing
258 #define ITP_BEGSEG 16 // start of tangential segment
259 #define ITP_ENDSEG 32 // stop of tangential segment
260 #define ITP_TANG 64 // tangential point
262 //=======================================================================
263 //function : PointLineDeviation
265 //=======================================================================
266 // Return (signed) deviation of point from line
267 static Standard_Real PointLineDeviation (const gp_Pnt2d &p, const gp_Lin2d &line)
269 gp_Dir2d dir = line.Direction();
270 gp_Dir2d n ( -dir.Y(), dir.X() );
271 return n.XY() * ( p.XY() - line.Location().XY() );
274 //=======================================================================
275 //function : PointLinePosition
277 //=======================================================================
278 // Define position of point relative to line
279 static Standard_Integer PointLinePosition (const gp_Pnt2d &p, const gp_Lin2d &line,
282 dev = PointLineDeviation ( p, line );
283 return ( dev > TOLINT ? IOR_LEFT : ( dev < -TOLINT ? IOR_RIGHT : IOR_UNDEF ) );
286 //=======================================================================
287 //function : PointLinePosition
289 //=======================================================================
290 // Define position of point relative to line
291 static Standard_Integer PointLinePosition (const gp_Pnt2d &p, const gp_Lin2d &line)
294 return PointLinePosition ( p, line, dev );
297 //=======================================================================
298 //function : ParamPointsOnLine
300 //=======================================================================
301 // Compute parameter of point on line
302 static inline Standard_Real ParamPointOnLine (const gp_Pnt2d &p, const gp_Lin2d &line)
304 return line.Direction().XY() * ( p.XY() - line.Location().XY() );
307 //=======================================================================
308 //function : ParamPointsOnLine
310 //=======================================================================
311 // Compute parameter of two points on line (as intersection of segment)
312 static Standard_Real ParamPointsOnLine (const gp_Pnt2d &p1, const gp_Pnt2d &p2,
313 const gp_Lin2d &line)
315 Standard_Real dist1 = PointLineDeviation ( p1, line );
316 Standard_Real dist2 = PointLineDeviation ( p2, line );
317 // in most cases, one of points is on line
318 if ( Abs ( dist1 ) < ::Precision::PConfusion() ) {
319 if ( Abs ( dist2 ) < ::Precision::PConfusion() )
320 return 0.5 * ( ParamPointOnLine ( p1, line ) + ParamPointOnLine ( p2, line ) );
321 return ParamPointOnLine ( p1, line );
323 if ( Abs ( dist2 ) < ::Precision::PConfusion() )
324 return ParamPointOnLine ( p2, line );
326 if ( dist2 * dist1 >0 )
327 return 0.5 * ( ParamPointOnLine ( p1, line ) + ParamPointOnLine ( p2, line ) );
328 // else compute intersection
329 return ( ParamPointOnLine ( p1, line ) * dist2 -
330 ParamPointOnLine ( p2, line ) * dist1 ) / ( dist2 - dist1 );
333 //=======================================================================
334 //function : ProjectPointOnLine
336 //=======================================================================
337 // Compute projection of point on line
338 static inline gp_Pnt2d ProjectPointOnLine (const gp_Pnt2d &p, const gp_Lin2d &line)
340 return line.Location().XY() + line.Direction().XY() * ParamPointOnLine ( p, line );
343 //=======================================================================
344 //function : ApplyContext
346 //=======================================================================
347 // Apply context to one edge in the wire and put result into this wire
348 static Standard_Integer ApplyContext (ShapeFix_WireSegment &wire,
349 const Standard_Integer iedge,
350 const Handle(ShapeBuild_ReShape) &context)
352 TopoDS_Edge edge = wire.Edge ( iedge );
353 TopoDS_Shape res = context->Apply ( edge );
355 if ( res.IsSame ( edge ) ) return 1;
357 if ( res.ShapeType() == TopAbs_EDGE ) {
358 wire.SetEdge ( iedge, TopoDS::Edge ( res ) );
362 Standard_Integer index = iedge;
364 Handle(ShapeExtend_WireData) segw = new ShapeExtend_WireData;
365 segw->ManifoldMode() = Standard_False;
366 for ( TopoDS_Iterator it(res); it.More(); it.Next() ) {
367 TopoDS_Edge E = TopoDS::Edge ( it.Value() );
368 if ( ! E.IsNull() ) segw->Add ( E );
370 else cout << "Error: ShapeFix_ComposeShell, ApplyContext: wrong mapping of edge" << endl;
374 // add edges into the wire in correct order
375 if ( segw->NbEdges() >0 ) {
376 Standard_Integer ind, iumin, iumax, ivmin, ivmax;
377 wire.GetPatchIndex ( iedge, iumin, iumax, ivmin, ivmax );
378 Standard_Integer nbEdges = segw->NbEdges();
379 for ( Standard_Integer i=1; i <= nbEdges; i++, index++ ) {
380 ind = ( edge.Orientation() == TopAbs_FORWARD || edge.Orientation() == TopAbs_INTERNAL ? i : segw->NbEdges()-i+1 );
381 TopoDS_Edge aE = segw->Edge ( ind );
382 if ( i==1 ) wire.SetEdge ( index, aE );
383 else wire.AddEdge ( index, aE, iumin, iumax, ivmin, ivmax );
387 else cout << "Warning: ShapeFix_ComposeShell, ApplyContext: edge is to remove - not implemented" << endl;
390 return index - iedge;
394 //=======================================================================
395 //function : IsCoincided
397 //=======================================================================
398 // check points coincidence
399 static inline Standard_Integer IsCoincided (const gp_Pnt2d &p1, const gp_Pnt2d &p2,
400 const Standard_Real UResolution,
401 const Standard_Real VResolution,
402 const Standard_Real tol)
404 //pdn Maximal accuracy is working precision of intersector.
405 Standard_Real UTolerance = UResolution * tol;
406 Standard_Real VTolerance = VResolution * tol;
407 return Abs ( p1.X() - p2.X() ) <= Max(TOLINT,UTolerance) &&
408 Abs ( p1.Y() - p2.Y() ) <= Max(TOLINT,VTolerance);
412 //=======================================================================
413 //function : GetPatchIndex
415 //=======================================================================
417 // computes index for the patch by given parameter Param
418 static Standard_Integer GetPatchIndex (const Standard_Real Param,
419 const Handle(TColStd_HArray1OfReal) &Params,
420 const Standard_Boolean isClosed)
422 Standard_Integer NP = Params->Upper();
423 Standard_Real period = Params->Value(NP) - Params->Value(1);
424 Standard_Real shift = 0;
426 shift = ShapeAnalysis::AdjustToPeriod ( Param, Params->Value(1), Params->Value(NP) );
427 Standard_Real p = Param + shift;
429 // locate patch: the same algo as in SE_CS::LocateParameter()
430 Standard_Integer i; // svv #1
431 for ( i = 2; i < NP; i++ ) {
432 // Standard_Real par = Params->Value(i);
433 if ( p < Params->Value(i) ) break;
437 Standard_Real ish = shift / period;
438 Standard_Integer ishift = (Standard_Integer)( ish <0 ? ish - 0.5 : ish + 0.5 );
439 return i - ishift * ( NP - 1 );
442 //=======================================================================
443 //function : LoadWires
445 //=======================================================================
447 void ShapeFix_ComposeShell::LoadWires (ShapeFix_SequenceOfWireSegment &seqw) const
451 // Init seqw by initial set of wires (with corresponding orientation)
452 for ( TopoDS_Iterator iw(myFace,Standard_False); iw.More(); iw.Next() )
454 TopoDS_Shape tmpW = Context()->Apply ( iw.Value() ) ;
455 if(tmpW.ShapeType() != TopAbs_WIRE)
457 if(tmpW.ShapeType() == TopAbs_VERTEX)
459 ShapeFix_WireSegment seg; //(( isOuter ? TopAbs_REVERSED : TopAbs_FORWARD ) );
460 seg.SetVertex(TopoDS::Vertex(tmpW));
461 seg.Orientation(tmpW.Orientation());
468 TopoDS_Wire wire = TopoDS::Wire ( tmpW );
470 Standard_Boolean isNonManifold = ( wire.Orientation() != TopAbs_REVERSED &&
471 wire.Orientation() != TopAbs_FORWARD );
473 // protect against INTERNAL/EXTERNAL wires
474 // if ( wire.Orientation() != TopAbs_REVERSED &&
475 // wire.Orientation() != TopAbs_FORWARD ) continue;
477 // determine orientation of the wire
478 // TopoDS_Face face = TopoDS::Face ( myFace.EmptyCopied() );
479 // B.Add ( face, wire );
480 // Standard_Boolean isOuter = ShapeAnalysis::IsOuterBound ( face );
484 Handle(ShapeExtend_WireData) sbwd = new ShapeExtend_WireData ( wire ,Standard_True,Standard_False);
485 //pdn protection againts of wires w/o edges
486 Standard_Integer nbEdges = sbwd->NbEdges();
489 //wire segments for non-manifold topology should have INTERNAL orientation
490 ShapeFix_WireSegment seg ( sbwd, TopAbs_INTERNAL);
496 //splitting wires containing manifold and non-manifold parts on a separate
498 Handle(ShapeExtend_WireData) sbwdM = new ShapeExtend_WireData();
499 Handle(ShapeExtend_WireData) sbwdNM = new ShapeExtend_WireData();
500 sbwdNM->ManifoldMode() = Standard_False;
501 TopoDS_Iterator aIt(wire);
502 for( ; aIt.More(); aIt.Next())
504 TopoDS_Edge E = TopoDS::Edge ( aIt.Value() );
505 if(E.Orientation() == TopAbs_FORWARD || E.Orientation() == TopAbs_REVERSED)
511 Standard_Integer nbMEdges = sbwdM->NbEdges();
512 Standard_Integer nbNMEdges = sbwdNM->NbEdges();
516 ShapeFix_WireSegment seg ( sbwdNM, TopAbs_INTERNAL); //(( isOuter ? TopAbs_REVERSED : TopAbs_FORWARD ) );
521 // Orientation is set so as to allow the segment to be traversed in only one direction
523 Handle(ShapeFix_Wire) sfw = new ShapeFix_Wire;
525 Standard_Integer stat=0;
526 Handle(Geom_Surface) gs = BRep_Tool::Surface(myFace);
527 if( gs->IsUPeriodic() && gs->IsVPeriodic() )
529 // For torus-like shapes, first reorder in 2d since reorder is indifferent in 3d
530 ShapeAnalysis_WireOrder sawo(Standard_False, 0);
531 ShapeAnalysis_Edge sae;
532 for(Standard_Integer i = 1; i <= nbMEdges; i++) {
534 Handle(Geom2d_Curve) c2d;
536 TopoDS_Shape tmpF = myFace.Oriented(TopAbs_FORWARD);
537 if(!sae.PCurve(sbwdM->Edge(i),TopoDS::Face(tmpF),c2d,f,l))
539 sawo.Add(c2d->Value(f).XY(),c2d->Value(l).XY());
543 stat = (sawo.Status() < 0 ? -1 : 1);
544 sfw->FixReorder(sawo);
548 if (sfw->StatusReorder(ShapeExtend_DONE3))
554 TopoDS_Shape dummy = myFace.EmptyCopied();
555 TopoDS_Face face = TopoDS::Face ( dummy );
556 B.Add ( face, wire );
557 Standard_Boolean isOuter = ShapeAnalysis::IsOuterBound ( face );
558 TopoDS_Wire w = sbwdM->Wire();
559 dummy = myFace.EmptyCopied();
560 face = TopoDS::Face ( dummy );
562 Standard_Boolean isOuterAfter = ShapeAnalysis::IsOuterBound ( face );
563 if(isOuter!=isOuterAfter)
564 sbwdM->Reverse(face);
567 ShapeFix_WireSegment seg ( sbwdM, TopAbs_REVERSED ); //(( isOuter ? TopAbs_REVERSED : TopAbs_FORWARD ) );
574 //=======================================================================
575 //function : ComputeCode
576 //purpose : compute code for wire segment between two intersections (by deviation)
577 //=======================================================================
579 Standard_Integer ShapeFix_ComposeShell::ComputeCode (const Handle(ShapeExtend_WireData) &wire,
580 const gp_Lin2d &line,
581 const Standard_Integer begInd,
582 const Standard_Integer endInd,
583 const Standard_Real begPar,
584 const Standard_Real endPar,
585 const Standard_Boolean isInternal)
587 Standard_Integer code = IOR_UNDEF;
589 ShapeAnalysis_Edge sae;
590 const Standard_Integer NPOINTS = 5; // number of points for measuring deviation
592 // track special closed case: segment starts at end of edge and ends at its beginning
593 Standard_Integer special = ( begInd == endInd &&
594 ( wire->Edge(begInd).Orientation() == TopAbs_FORWARD ||
595 wire->Edge(begInd).Orientation() == TopAbs_INTERNAL) ==
596 ( begPar > endPar ) ? 1 : 0);
597 if ( ! special && begInd == endInd && begPar == endPar && (myClosedMode || isInternal))
600 // for tracking cases in closed mode
601 Standard_Boolean begin=Standard_True;
602 Standard_Real shift=0;
605 // check if segment is tangency
606 // Segment is considered as tangency if deviation of pcurve from line
607 // (in 2d) measured by NPOINTS points is less than tolerance of edge
608 // (recomputed to 2d using Resolution).
610 Standard_Integer nb = wire->NbEdges();
612 Standard_Integer i; // svv #1
613 for ( i=begInd; ; i++ ) {
615 TopoDS_Edge edge = wire->Edge ( i );;
617 Handle(Geom2d_Curve) c2d;
619 if ( ! sae.PCurve ( edge, myFace, c2d, f, l, Standard_False ) ) {
620 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL3 );
623 Standard_Real tol = LimitTolerance(BRep_Tool::Tolerance ( edge ));
624 Standard_Boolean isreversed = ( edge.Orientation() == TopAbs_REVERSED );
626 Standard_Real par1 = ( i == begInd && special >=0 ? begPar : ( isreversed ? l : f ) );
627 Standard_Real par2 = ( i == endInd && special <=0 ? endPar : ( isreversed ? f : l ) );
628 Standard_Real dpar = ( par2 - par1 ) / ( NPOINTS - 1 );
629 Standard_Integer np = ( Abs ( dpar ) < ::Precision::PConfusion() ? 1 : NPOINTS );
630 Standard_Integer j; // svv #1
631 for ( j=0; j < np; j++ ) {
632 Standard_Real par = par1 + dpar * j;
633 gp_Pnt2d p2d = c2d->Value ( par );
634 if ( myClosedMode ) {
635 if ( myUClosed && Abs ( line.Direction().X() ) < ::Precision::PConfusion() ) {
636 if ( begin ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.X(), line.Location().X(), myUPeriod );
637 else if ( ! j ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.X()-p2d0.X(), 0., myUPeriod );
638 p2d.SetX ( p2d.X() + shift );
640 if ( myVClosed && Abs ( line.Direction().Y() ) < ::Precision::PConfusion() ) {
641 if ( begin ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.Y(), line.Location().Y(), myVPeriod );
642 else if ( ! j ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.Y()-p2d0.Y(), 0., myVPeriod );
643 p2d.SetY ( p2d.Y() + shift );
645 begin = Standard_False;
648 Standard_Integer pos = PointLinePosition ( p2d, line );
649 if ( pos == IOR_UNDEF ) continue;
651 // analyse the deviation
652 gp_Pnt2d p2dl = ProjectPointOnLine ( p2d, line );
653 if(!IsCoincided ( p2d, p2dl, myUResolution, myVResolution, tol )) {
654 if(!myClosedMode) { code = pos; break; }
660 if ( j < np ) { i = 0; break; } // not tangency
662 if ( special <=0 ) break;
666 if ( myClosedMode ) {
667 if ( code != IOR_UNDEF && ! begin ) {
668 // in closed mode, if segment is of 2*pi length, it is BOTH
669 Standard_Real dev = PointLineDeviation ( p2d0, line );
670 if ( myUClosed && Abs ( line.Direction().X() ) < ::Precision::PConfusion() ) {
671 if ( Abs ( Abs ( dev ) - myUPeriod ) < 0.1 * myUPeriod ) {
673 if ( dev >0 ) code |= IOR_POS;
675 else if(code==IOR_BOTH)
678 if ( myVClosed && Abs ( line.Direction().Y() ) < ::Precision::PConfusion() ) {
679 if ( Abs ( Abs ( dev ) - myVPeriod ) < 0.1 * myVPeriod ) {
681 if ( dev >0 ) code |= IOR_POS;
683 else if(code==IOR_BOTH)
689 if ( i ) code = IOR_UNDEF; // tangency
690 else if ( code == IOR_BOTH ) { // parity error in intersector
692 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
694 cout << "Warning: ShapeFix_ComposeShell::ComputeCode: lost intersection point" << endl;
700 //=======================================================================
701 //function : DistributeSplitPoints
703 //=======================================================================
704 // After applying context to (seam) edge, distribute its indices on new edges,
705 // according to their parameters on that edge
706 static void DistributeSplitPoints (const Handle(ShapeExtend_WireData) &sbwd,
707 const TopoDS_Face myFace,
708 const Standard_Integer index,
709 const Standard_Integer nsplit,
710 TColStd_SequenceOfInteger& indexes,
711 const TColStd_SequenceOfReal& values)
713 Standard_Boolean isreversed = ( nsplit >0 && sbwd->Edge(index).Orientation() == TopAbs_REVERSED );
715 TColStd_Array1OfReal params(0,nsplit);
716 Standard_Integer i; // svv #1
717 for ( i=0; i < nsplit; i++ ) {
719 BRep_Tool::Range ( sbwd->Edge(index+i), myFace, f, l );
720 params.SetValue ( i, ( isreversed ? l : f ) );
723 for ( i=1; i <= indexes.Length() && indexes(i) < index; i++ );
724 for ( Standard_Integer shift = 1; i <= indexes.Length() && indexes(i) == index; i++ ) {
725 while ( shift < nsplit && isreversed != (Standard_Boolean) ( values(i) > params(shift) ) ) shift++;
726 indexes.SetValue ( i, index + shift - 1 );
728 for ( ; i <= indexes.Length(); i++ )
729 indexes.SetValue ( i, indexes(i) + nsplit - 1 );
732 //=======================================================================
733 //function : CheckByCurve3d
735 //=======================================================================
736 static Standard_Integer CheckByCurve3d (const gp_Pnt &pos,
737 const Handle(Geom_Curve) &c3d,
738 const Standard_Real param,
740 const Standard_Real tol)
742 if ( c3d.IsNull() ) return Standard_True;
743 gp_Pnt p = c3d->Value(param);
744 if ( T.Form() != gp_Identity ) p.Transform ( T );
745 return pos.SquareDistance ( p ) <= tol * tol;
748 //=======================================================================
749 //function : DefinePatch
751 //=======================================================================
752 static void DefinePatch (ShapeFix_WireSegment &wire, const Standard_Integer code,
753 const Standard_Boolean isCutByU, const Standard_Integer cutIndex,
754 const Standard_Integer number = -1)
756 Standard_Integer nb = (number > 0 ? number : wire.NbEdges());
758 if ( ! ( code & IOR_LEFT ) ) wire.DefineIUMin ( nb, cutIndex );
759 if ( ! ( code & IOR_RIGHT ) ) wire.DefineIUMax ( nb, cutIndex );
762 if ( ! ( code & IOR_RIGHT ) ) wire.DefineIVMin ( nb, cutIndex );
763 if ( ! ( code & IOR_LEFT ) ) wire.DefineIVMax ( nb, cutIndex );
767 //=======================================================================
768 //function : GetGridResolution
770 //=======================================================================
771 static Standard_Real GetGridResolution(const Handle(TColStd_HArray1OfReal) SplitValues,
772 const Standard_Integer cutIndex)
774 Standard_Integer nb = SplitValues->Length();
775 Standard_Real leftLen = (cutIndex > 1 ? SplitValues->Value(cutIndex) - SplitValues->Value(cutIndex-1) :
776 SplitValues->Value(nb) -SplitValues->Value(nb-1));
777 Standard_Real rigthLen =(cutIndex < nb ? SplitValues->Value(cutIndex+1)-SplitValues->Value(cutIndex) :
778 SplitValues->Value(2) - SplitValues->Value(1));
779 return Min(leftLen,rigthLen)/3.;
782 //=======================================================================
783 //function : SplitWire
785 //=======================================================================
787 ShapeFix_WireSegment ShapeFix_ComposeShell::SplitWire (ShapeFix_WireSegment &wire,
788 TColStd_SequenceOfInteger& indexes,
789 const TColStd_SequenceOfReal& values,
790 TopTools_SequenceOfShape& vertices,
791 const TColStd_SequenceOfInteger &SegmentCodes,
792 const Standard_Boolean isCutByU,
793 const Standard_Integer cutIndex)
796 ShapeFix_WireSegment result;
797 Handle(ShapeAnalysis_Surface) aSurfTool =
798 new ShapeAnalysis_Surface ( BRep_Tool::Surface (myFace) );
799 Standard_Integer nbSplits = indexes.Length();
800 ShapeAnalysis_Edge sae;
801 Standard_Integer start = 1;
802 TopAbs_Orientation anWireOrient = wire.Orientation();
804 if ( ! myLoc.IsIdentity() ) T = myLoc.Inverted().Transformation();
806 // Processing edge by edge (assuming that split points are sorted along the wire)
807 for ( Standard_Integer i = 1; i <= wire.NbEdges(); i++ ) {
809 // for already splitted seam edge, redistribute its splitting points
810 Standard_Integer nsplit = ApplyContext ( wire, i, Context() );
812 DistributeSplitPoints ( wire.WireData(), myFace, i, nsplit, indexes, values );
815 cout << "Error: ShapeFix_ComposeShell::SplitWire: edge dismissed" << endl;
821 TopoDS_Edge edge = wire.Edge(i);
823 Standard_Integer iumin, iumax, ivmin, ivmax;
824 wire.GetPatchIndex ( i, iumin, iumax, ivmin, ivmax );
826 // Position code for first segment of edge
827 Standard_Integer code = SegmentCodes ( start >1 ? start-1 : SegmentCodes.Length() );
829 // Defining split parameters on edge
830 Standard_Integer stop = start;
831 while ( stop <= nbSplits && indexes(stop) == i ) stop++;
832 if ( stop == start ) {
833 result.AddEdge ( 0, edge, iumin, iumax, ivmin, ivmax );
834 if(code!=0 || wire.Orientation()!=TopAbs_EXTERNAL) // pdn 0 code handling for extertnal wires
835 DefinePatch ( result, code, isCutByU, cutIndex );
838 //find non-manifold vertices on edge
839 TopTools_SequenceOfShape aNMVertices;
840 TopoDS_Iterator aIt(edge,Standard_False);
841 for( ; aIt.More(); aIt.Next()) {
842 if(aIt.Value().Orientation() != TopAbs_FORWARD &&
843 aIt.Value().Orientation() != TopAbs_REVERSED)
844 aNMVertices.Append(aIt.Value());
847 // Collect data on edge
848 Standard_Real tolEdge = BRep_Tool::Tolerance(edge);
849 Standard_Real tol = LimitTolerance( tolEdge );
850 TopoDS_Vertex prevV = sae.FirstVertex(edge);
851 TopoDS_Vertex lastV = sae.LastVertex(edge);
852 Standard_Real prevVTol = LimitTolerance( BRep_Tool::Tolerance(prevV) );
853 Standard_Real lastVTol = LimitTolerance( BRep_Tool::Tolerance(lastV) );
854 gp_Pnt prevVPnt = BRep_Tool::Pnt(prevV);
855 gp_Pnt lastVPnt = BRep_Tool::Pnt(lastV);
856 if ( T.Form() != gp_Identity ) {
857 prevVPnt.Transform ( T );
858 lastVPnt.Transform ( T );
861 Handle(Geom_Curve) c3d;
862 Standard_Real f3d, l3d;
863 if ( ! sae.Curve3d ( edge, c3d, f3d, l3d ) ) { // not a crime
868 Standard_Real firstPar, lastPar;
869 Handle(Geom2d_Curve) C2d;
870 if ( ! sae.PCurve ( edge, myFace, C2d, firstPar, lastPar ) ) {
871 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
873 //finding sequence of non-manifold parameters
874 Standard_Integer nbNMVert = aNMVertices.Length();
875 TColStd_SequenceOfReal aNMVertParams;
877 Geom2dAdaptor_Curve adc(C2d);
878 Standard_Integer n =1;
879 for( ; n<= nbNMVert; n++) {
880 gp_Pnt apV = BRep_Tool::Pnt(TopoDS::Vertex(aNMVertices.Value(n)));
881 Standard_Real apar =firstPar;
882 Standard_Real adist2 =RealLast();
885 ShapeAnalysis_Curve asae;
886 adist2 = asae.Project(c3d,apV,Precision::Confusion(),aPproj,apar);
890 gp_Pnt2d aP2d = aSurfTool->ValueOfUV(apV,Precision::Confusion());
891 Extrema_ExtPC2d aExtr(aP2d,adc);
892 if(aExtr.IsDone() && aExtr.NbExt()) {
893 adist2 = aExtr.SquareDistance(1);
894 Standard_Integer index =1;
895 Standard_Integer k =2;
896 for( ; k <= aExtr.NbExt();k++) {
897 Standard_Real ad2 = aExtr.SquareDistance(k);
903 apar = aExtr.Point(index).Parameter();
906 aNMVertParams.Append(apar);
910 //pdn Claculating parametric shift
911 Standard_Boolean sp = (f3d == firstPar && l3d == lastPar);
912 Standard_Real span2d = lastPar - firstPar;
913 // Standard_Real ln2d = lastPar-prevPar;
914 // Standard_Real ln3d = l3d - f3d;
915 // Standard_Real fact = ln2d/ln3d;
916 // Standard_Real shift = prevPar - f3d*fact;
917 Standard_Real prevPar = firstPar;
918 gp_Pnt2d prevPnt2d = C2d->Value(prevPar);
919 gp_Pnt2d lastPnt2d = C2d->Value(lastPar);
920 gp_Pnt prevPnt = myGrid->Value ( prevPnt2d );
921 gp_Pnt lastPnt = myGrid->Value ( lastPnt2d );
922 Standard_Boolean isPeriodic = C2d->IsPeriodic();
923 Standard_Real aPeriod = (isPeriodic ? C2d->Period() :0.);
926 Standard_Integer NbEdgesStart = result.NbEdges();
927 Standard_Boolean splitted = Standard_False;
928 Standard_Real currPar=lastPar; //SK
929 for ( Standard_Integer j = start; j <= stop; prevPar = currPar, j++ ) {
930 if ( ! splitted && j >= stop ) {// no splitting at all
931 // code = SegmentCodes ( j >1 ? j-1 : SegmentCodes.Length() ); // classification code
934 currPar = ( j < stop ? values.Value(j) : lastPar );
935 //fix for case when pcurve is periodic and first parameter of edge is more than 2P
936 //method ShapeBuild_Edge::CopyRanges shift pcurve to range 0-2P and parameters of cutting
937 //should be shifted too. gka SAMTECH 28.07.06
939 if (currPar > (Max(lastPar,firstPar) +Precision::PConfusion()) ||
940 currPar < (Min(firstPar,lastPar)- Precision::PConfusion())) {
941 Standard_Real aShift = ShapeAnalysis::AdjustByPeriod(currPar, (firstPar+lastPar)*0.5,aPeriod);
949 // Try to adjust current splitting point to previous or end of edge
950 Standard_Boolean doCut = Standard_True;
952 if ( Abs ( currPar - lastPar ) < ::Precision::PConfusion() ) {
954 doCut = Standard_False;
956 else if ( Abs ( currPar - prevPar ) < ::Precision::PConfusion() ) {
957 vertices.Append ( prevV );
958 code = SegmentCodes ( j ); // classification code - update for next segment
959 continue; // no splitting at this point, go to next one
962 currPnt2d = C2d->Value(currPar);
963 currPnt = myGrid->Value ( currPnt2d );
964 if ( currPnt.Distance ( lastVPnt ) <= lastVTol &&
965 lastPnt.Distance ( currPnt ) <= tol &&
966 CheckByCurve3d ( lastVPnt, c3d, f3d+(currPar-firstPar)*(l3d-f3d)/span2d,
968 lastPnt.Distance ( myGrid->Value ( C2d->Value(0.5*(currPar+lastPar)) ) ) <= tol ) {
970 Standard_Real uRes = myUResolution;
971 Standard_Real vRes = myVResolution;
973 Standard_Real gridRes = GetGridResolution(myGrid->UJointValues(),cutIndex)/tol;
974 uRes = Min(myUResolution,gridRes);
977 Standard_Real gridRes = GetGridResolution(myGrid->VJointValues(),cutIndex)/tol;
978 vRes = Min(myVResolution,gridRes);
980 if ( IsCoincided ( lastPnt2d, currPnt2d, uRes, vRes, tol ) &&
981 IsCoincided ( lastPnt2d, C2d->Value(0.5*(currPar+lastPar)), uRes, vRes, tol ) )
982 doCut = Standard_False;
984 else if ( currPnt.Distance ( prevVPnt ) <= prevVTol &&
985 prevPnt.Distance ( currPnt ) <= tol &&
986 CheckByCurve3d ( prevVPnt, c3d, f3d+(currPar-firstPar)*(l3d-f3d)/span2d,
988 prevPnt.Distance ( myGrid->Value ( C2d->Value(0.5*(currPar+prevPar)) ) ) <= tol ) {
990 Standard_Real uRes = myUResolution;
991 Standard_Real vRes = myVResolution;
993 Standard_Real gridRes = GetGridResolution(myGrid->UJointValues(),cutIndex)/tol;
994 uRes = Min(myUResolution,gridRes);
997 Standard_Real gridRes = GetGridResolution(myGrid->VJointValues(),cutIndex)/tol;
998 vRes = Min(myVResolution,gridRes);
1000 if ( IsCoincided ( prevPnt2d, currPnt2d, uRes, vRes, tol ) &&
1001 IsCoincided ( prevPnt2d, C2d->Value(0.5*(currPar+prevPar)), uRes, vRes, tol ) ) {
1002 vertices.Append ( prevV );
1003 code = SegmentCodes ( j ); // classification code - update for next segment
1004 continue; // no splitting at this point, go to next one
1007 //:abv 28.05.02: OCC320 Sample_2: if maxtol = 1e-7, the vertex tolerance
1008 // is actually ignored - protect against new vertex on degenerated edge
1009 else if ( BRep_Tool::Degenerated(edge) && prevV.IsSame(lastV) ) {
1013 // classification code for current segment
1014 if ( j > start ) code = SegmentCodes ( j >1 ? j-1 : SegmentCodes.Length() );
1016 // if not adjusted, make new vertex
1018 B.MakeVertex ( V, currPnt.Transformed(myLoc.Transformation()), tolEdge );
1019 vertices.Append ( V );
1021 // else adjusted to end, fill all resting vertices
1022 else if ( ! doCut ) {
1023 for ( ; j < stop; j++ ) vertices.Append ( lastV );
1024 if ( ! splitted ) break; // no splitting at all
1027 else vertices.Append ( V );
1029 // When edge is about to be splitted, copy end vertices to protect
1030 // original shape from increasing tolerance after fixing SameParameter
1033 TopoDS_Shape emptyCopiedfV = prevV.EmptyCopied();
1034 TopoDS_Vertex fV = TopoDS::Vertex (emptyCopiedfV );
1035 Context()->Replace ( prevV, fV );
1037 if ( prevV.IsSame ( lastV ) ) {
1039 TopoDS_Shape tmpV = fV.Oriented ( lastV.Orientation() ) ;
1040 lV = TopoDS::Vertex (tmpV);
1044 TopoDS_Shape emptyCopied = lastV.EmptyCopied();
1045 lV = TopoDS::Vertex (emptyCopied);
1046 Context()->Replace ( lastV, lV );
1048 if ( V.IsSame ( lastV ) ) V = lV;
1049 else if ( V.IsSame ( prevV ) ) V = fV;
1054 // Splitting of the edge
1055 splitted = Standard_True;
1056 prevV.Orientation ( TopAbs_FORWARD );
1057 V.Orientation ( TopAbs_REVERSED );
1058 ShapeBuild_Edge sbe;
1059 TopoDS_Edge anInitEdge = edge;
1060 Standard_Boolean ismanifold = (edge.Orientation() == TopAbs_FORWARD ||
1061 edge.Orientation() == TopAbs_REVERSED);
1063 anInitEdge.Orientation(TopAbs_FORWARD);
1064 TopoDS_Edge newEdge = sbe.CopyReplaceVertices (anInitEdge, prevV, V );
1066 //addition internal vertices if they exists on edge
1067 Standard_Integer n =1;
1068 for( ; n <= aNMVertParams.Length(); n++) {
1069 Standard_Real apar = aNMVertParams.Value(n);
1070 TopoDS_Vertex aNMVert =TopoDS::Vertex(aNMVertices.Value(n));
1071 TopoDS_Vertex atmpV = TopoDS::Vertex(Context()->Apply(aNMVert));
1072 if(fabs(apar - prevPar) <= Precision::PConfusion()) {
1073 Context()->Replace(atmpV,prevV);
1074 aNMVertParams.Remove(n);
1075 aNMVertices.Remove(n);
1078 else if(fabs(apar - currPar) <= Precision::PConfusion()) {
1079 Context()->Replace(atmpV,V);
1080 aNMVertParams.Remove(n);
1081 aNMVertices.Remove(n);
1084 if(apar > prevPar && apar < currPar) {
1085 B.Add(newEdge,atmpV);
1086 aNMVertParams.Remove(n);
1087 aNMVertices.Remove(n);
1092 sbe.CopyPCurves ( newEdge, anInitEdge );
1094 Handle(ShapeAnalysis_TransferParameters) theTransferParamtool = GetTransferParamTool();
1095 theTransferParamtool->SetMaxTolerance(MaxTolerance());
1096 theTransferParamtool->Init(anInitEdge,myFace);
1097 theTransferParamtool->TransferRange(newEdge,prevPar,currPar,Standard_True);
1100 if(code == IOR_UNDEF) //tangential segment
1101 newEdge.Orientation(TopAbs_EXTERNAL);
1103 newEdge.Orientation(edge.Orientation());
1106 if(!sp && !BRep_Tool::Degenerated(newEdge))
1107 B.SameRange(newEdge, Standard_False);
1108 //pdn take into account 0 codes (if ext)
1109 if(code == 0 && wire.Orientation()==TopAbs_EXTERNAL){
1110 code = ( ( isCutByU == (Standard_Boolean)( j == 1 ) ) ? 1 : 2 );
1113 result.AddEdge ( 0, newEdge, iumin, iumax, ivmin, ivmax );
1114 DefinePatch ( result, code, isCutByU, cutIndex );
1116 // Changing prev parameters
1118 prevVTol = LimitTolerance( BRep_Tool::Tolerance ( V ) );
1119 prevVPnt = BRep_Tool::Pnt ( V );
1121 prevPnt2d = currPnt2d;
1126 // record replacement in context
1127 // NOTE: order of edges in the replacing wire corresponds to FORWARD orientation of the edge
1128 TopoDS_Wire resWire;
1129 B.MakeWire ( resWire );
1130 for ( Standard_Integer k=NbEdgesStart; k < result.NbEdges(); k++ ) {
1131 if ( edge.Orientation() == TopAbs_FORWARD || edge.Orientation() == TopAbs_INTERNAL)
1132 B.Add ( resWire, result.Edge(k+1) );
1133 else B.Add ( resWire, result.Edge(result.NbEdges()-k+NbEdgesStart) );
1135 Context()->Replace ( edge, resWire );
1138 if(anWireOrient == TopAbs_INTERNAL && code ==0) {
1139 ShapeBuild_Edge sbe;
1140 if(edge.Orientation() == TopAbs_INTERNAL)
1141 edge.Orientation(TopAbs_FORWARD);
1142 TopoDS_Edge e1 = sbe.Copy(edge,Standard_False);
1143 Handle(Geom2d_Curve) C2d2 = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
1144 B.UpdateEdge(e1,C2d,C2d2,myFace,0.);
1145 e1.Orientation(TopAbs_EXTERNAL);
1146 Context()->Replace ( edge,e1);
1147 result.AddEdge ( 0,e1 , iumin, iumax, ivmin, ivmax );
1150 result.AddEdge ( 0, edge, iumin, iumax, ivmin, ivmax );
1151 if(code == 0 && wire.Orientation()==TopAbs_EXTERNAL){
1152 //pdn defining code for intersection of two isos
1153 code = ( ( isCutByU == (Standard_Boolean)( Abs(firstPar-currPar) < Abs(lastPar-currPar) ) ) ? 2 : 1 );
1155 DefinePatch ( result, code, isCutByU, cutIndex );
1158 result.Orientation ( anWireOrient );
1162 //=======================================================================
1163 //function : SplitByLine
1165 //=======================================================================
1167 Standard_Boolean ShapeFix_ComposeShell::SplitByLine (ShapeFix_WireSegment &wire,
1168 const gp_Lin2d &line,
1169 const Standard_Boolean isCutByU,
1170 const Standard_Integer cutIndex,
1171 TColStd_SequenceOfReal &SplitLinePar,
1172 TColStd_SequenceOfInteger &SplitLineCode,
1173 TopTools_SequenceOfShape &SplitLineVertex)
1175 ShapeAnalysis_Edge sae;
1176 // prepare data on cutting line
1177 Handle(Geom2d_Line) jC2d = new Geom2d_Line ( line );
1178 Geom2dAdaptor_Curve jGAC(jC2d);
1180 TColStd_SequenceOfInteger IntEdgeInd; // index of intersecting edge
1181 TColStd_SequenceOfReal IntEdgePar; // parameter of intersection point on edge
1182 TColStd_SequenceOfReal IntLinePar; // parameter of intersection point on line
1184 Standard_Boolean isnonmanifold = (wire.Orientation() == TopAbs_INTERNAL);
1185 //gka correction for non-manifold vertices SAMTECH
1186 if(wire.IsVertex()) {
1187 Handle(ShapeAnalysis_Surface) aSurfTool = new ShapeAnalysis_Surface ( BRep_Tool::Surface (myFace) );
1188 TopoDS_Vertex aVert = wire.GetVertex();
1189 gp_Pnt aP3d = BRep_Tool::Pnt(aVert);
1190 gp_Pnt2d aP2d = aSurfTool->ValueOfUV(aP3d,Precision::Confusion());
1191 Standard_Real dev =0.;
1192 Standard_Integer code = PointLinePosition(aP2d,line,dev);
1193 if(code != IOR_UNDEF)
1194 return Standard_False;
1195 Standard_Real par = ParamPointOnLine (aP2d,line);
1196 SplitLinePar.Append ( par );
1197 //splitting codes for non-manifold topology should be tangential
1198 SplitLineCode.Append (ITP_TANG); //ITP_INTER);
1199 TopoDS_Vertex aVertNew;
1201 aB.MakeVertex(aVertNew,aP3d,BRep_Tool::Tolerance(aVert));
1202 aVertNew.Orientation(TopAbs_FORWARD);
1203 Context()->Replace(aVert,aVertNew);
1204 SplitLineVertex.Append (aVertNew);
1205 wire.SetVertex(aVertNew);
1206 return Standard_True;
1208 const Handle(ShapeExtend_WireData) sewd = wire.WireData();
1210 Standard_Integer nbe = sewd->NbEdges();
1212 //:abv 31.10.01: for closed mode
1213 Standard_Integer closedDir = 0;
1214 if ( myClosedMode ) {
1215 if ( myUClosed && Abs ( line.Direction().X() ) < ::Precision::PConfusion() )
1217 else if ( myVClosed && Abs ( line.Direction().Y() ) < ::Precision::PConfusion() )
1220 Standard_Real halfPeriod = 0.5 * ( closedDir ? closedDir <0 ? myUPeriod : myVPeriod : 0. );
1222 //============================================
1223 // make intersections and collect all data on intersection points
1224 Standard_Integer firstCode=0, prevCode=0;
1225 gp_Pnt2d firstPos, prevPos;
1226 Standard_Real firstDev=0., prevDev=0.;
1227 for (Standard_Integer iedge = 1; iedge <= nbe; iedge++) {
1228 TopoDS_Edge E= sewd->Edge ( iedge );
1229 Standard_Boolean isreversed = ( E.Orientation() == TopAbs_REVERSED );
1232 Handle(Geom2d_Curve) c2d;
1233 if ( ! sae.PCurve ( E, myFace, c2d, f, l, Standard_False ) ) continue;
1236 gp_Pnt2d posf = c2d->Value(f), posl = c2d->Value(l);
1237 gp_XY pppf = posf.XY(), pppl = posl.XY();
1239 // In case of ClosedMode, adjust curve and end points to period on closed surface
1240 //:abv 16.10.01: Ziegler_CADDY01.sat -18: if pcurve is longer than period,
1241 // ensure processing of all intersections
1242 Standard_Integer nbIter = 1;
1243 gp_Vec2d shiftNext(0.,0.);
1244 if ( myClosedMode ) {
1245 // get bounding box of pcurve
1246 ShapeAnalysis_Curve sac;
1248 const Standard_Integer aNbPoints = 41;
1249 sac.FillBndBox ( c2d, f, l, aNbPoints, Standard_True, box );
1250 Standard_Real umin, vmin, umax, vmax;
1251 box.Get ( umin, vmin, umax, vmax );
1253 // compute shifts and adjust points adjust
1254 if ( closedDir < 0 ) {
1255 Standard_Real x = line.Location().X();
1256 Standard_Real shift = ShapeAnalysis::AdjustToPeriod ( umin, x-myUPeriod, x );
1257 if ( shift != 0. ) {
1258 c2d = Handle(Geom2d_Curve)::DownCast ( c2d->Copy() );
1259 gp_Vec2d V ( shift, 0. );
1260 c2d->Translate ( V );
1261 pppf.SetX ( pppf.X() + shift );
1262 pppl.SetX ( pppl.X() + shift );
1264 shiftNext.SetX ( -myUPeriod );
1265 nbIter = (Standard_Integer)( 1 + Abs ( umax + shift - x ) / myUPeriod );
1266 shift = ShapeAnalysis::AdjustByPeriod ( posf.X(), x, myUPeriod );
1267 posf.SetX ( posf.X() + shift );
1268 shift = ShapeAnalysis::AdjustByPeriod ( posl.X(), x, myUPeriod );
1269 posl.SetX ( posl.X() + shift );
1271 else if ( closedDir > 0 ) {
1272 Standard_Real y = line.Location().Y();
1273 Standard_Real shift = ShapeAnalysis::AdjustToPeriod ( vmin, y-myVPeriod, y );
1274 if ( shift != 0. ) {
1275 c2d = Handle(Geom2d_Curve)::DownCast ( c2d->Copy() );
1276 gp_Vec2d V ( 0., shift );
1277 c2d->Translate ( V );
1278 pppf.SetY ( pppf.Y() + shift );
1279 pppl.SetY ( pppl.Y() + shift );
1281 shiftNext.SetY ( -myVPeriod );
1282 nbIter = (Standard_Integer)( 1 + Abs ( umax + shift - y ) / myVPeriod );
1283 shift = ShapeAnalysis::AdjustByPeriod ( posf.Y(), y, myVPeriod );
1284 posf.SetY ( posf.Y() + shift );
1285 shift = ShapeAnalysis::AdjustByPeriod ( posl.Y(), y, myVPeriod );
1286 posl.SetY ( posl.Y() + shift );
1290 // detect intersections at junction of two edges
1291 gp_Pnt2d pos = ( isreversed ? posl : posf );
1293 Standard_Integer code = PointLinePosition ( pos, line, dev );
1294 if ( iedge ==1 ) { firstCode = code; firstPos = pos; firstDev = dev; }
1295 else if ( code == IOR_UNDEF || code != prevCode ) {
1296 if ( ! closedDir || Abs ( dev - prevDev ) < halfPeriod ) {
1297 IntLinePar.Append ( ParamPointsOnLine ( pos, prevPos, line ) ); // !! - maybe compute exactly ?
1298 IntEdgePar.Append ( isreversed ? l : f );
1299 IntEdgeInd.Append ( iedge );
1303 // fill data on end point (for next edge)
1304 pos = ( isreversed ? posf : posl );
1305 prevCode = PointLinePosition ( pos, line, prevDev );
1308 // cycle with shift in order to track all possible intersections
1309 for ( Standard_Integer iter=1; iter <= nbIter; iter++ ) {
1310 // data for intersection
1311 IntRes2d_Domain iDom ( pppf, f, TOLINT, pppl, l, TOLINT );
1312 Geom2dAdaptor_Curve iGAC(c2d);
1315 Geom2dInt_GInter Inter;
1316 Inter.Perform ( jGAC, /*jDom,*/ iGAC, iDom, TOLINT, TOLINT );
1318 // Fill arrays with new intersection points
1319 if ( Inter.IsDone() ) {
1321 for ( i = 1; i <= Inter.NbPoints(); i++ ) {
1322 IntRes2d_IntersectionPoint IP = Inter.Point (i);
1323 IntLinePar.Append ( IP.ParamOnFirst() );
1324 IntEdgePar.Append ( IP.ParamOnSecond() );
1326 for ( i = 1; i <= Inter.NbSegments(); i++ ) {
1327 IntRes2d_IntersectionSegment IS = Inter.Segment (i);
1328 if ( IS.HasFirstPoint() ) {
1329 IntRes2d_IntersectionPoint IP = IS.FirstPoint();
1330 IntLinePar.Append ( IP.ParamOnFirst() );
1331 IntEdgePar.Append ( IP.ParamOnSecond() );
1333 if ( IS.HasLastPoint() ) {
1334 IntRes2d_IntersectionPoint IP = IS.LastPoint();
1335 IntLinePar.Append ( IP.ParamOnFirst() );
1336 IntEdgePar.Append ( IP.ParamOnSecond() );
1340 if ( iter < nbIter ) {
1341 if ( iter == 1 ) c2d = Handle(Geom2d_Curve)::DownCast ( c2d->Copy() );
1342 pppf += shiftNext.XY();
1343 pppl += shiftNext.XY();
1344 c2d->Translate ( shiftNext );
1348 Standard_Integer start = IntEdgeInd.Length() + 1; // first of the new points
1350 // Move all points into range [f,l] (intersector sometimes gives params out of range)
1352 for ( i = start; i <= IntEdgePar.Length(); i++ ) {
1353 if ( IntEdgePar(i) < f ) IntEdgePar.SetValue ( i, f );
1354 else if ( IntEdgePar(i) > l ) IntEdgePar.SetValue ( i, l );
1357 // Sort by parameter on edge
1358 for ( i = IntEdgePar.Length(); i > start; i-- )
1359 for ( Standard_Integer j = start; j < i; j++ ) {
1360 if ( isreversed == (Standard_Boolean) ( IntEdgePar(j+1) < IntEdgePar(j) ) ) continue;
1361 IntLinePar.Exchange ( j, j+1 );
1362 IntEdgePar.Exchange ( j, j+1 );
1366 for ( i = start; i <= IntEdgePar.Length(); i++ )
1367 IntEdgeInd.Append ( iedge );
1369 // Detect intersection at closing point
1370 // Only wires which are not EXTERNAL are considered (as closed)
1371 if ( iedge == nbe && wire.Orientation() != TopAbs_EXTERNAL &&
1372 wire.Orientation() != TopAbs_INTERNAL &&
1373 ( prevCode == IOR_UNDEF || prevCode != firstCode ) ) {
1374 if ( ! closedDir || Abs ( firstDev - prevDev ) < halfPeriod ) {
1375 IntLinePar.Append ( ParamPointsOnLine ( pos, firstPos, line ) );
1376 IntEdgePar.Append ( isreversed ? f : l );
1377 IntEdgeInd.Append ( iedge );
1382 if ( IntEdgePar.Length() <1 ) {
1383 //pdn Defining position of wire. There is no intersection, so by any point.
1384 //DefinePatchForWire ( wire, firstCode, isCutByU, cutIndex );
1385 return Standard_False; //pdn ??
1388 //======================================
1389 // Fill sequence of transition codes for intersection points
1390 TColStd_SequenceOfInteger IntCode; // parameter of intersection point on line
1391 TColStd_SequenceOfInteger SegmentCodes; // classification codes for segments of wire
1393 // remove duplicated points to ensure correct results of ComputeCode
1394 Standard_Integer i, j = IntEdgePar.Length();
1395 if ( myClosedMode && j >1 ) {
1396 for ( i = 1; i <= IntEdgePar.Length(); ) {
1397 if ( i == j ) break;
1398 if ( IntEdgeInd(i) == IntEdgeInd(j) &&
1399 Abs ( IntEdgePar(i) - IntEdgePar(j) ) < ::Precision::PConfusion() ) {
1400 IntLinePar.Remove(i);
1401 IntEdgePar.Remove(i);
1402 IntEdgeInd.Remove(i);
1406 else if ( nbe ==1 || IntEdgeInd(i) == (IntEdgeInd(j)%nbe)+1 ) {
1407 TopoDS_Edge E1 = sewd->Edge ( IntEdgeInd(j) );
1408 TopoDS_Edge E2 = sewd->Edge ( IntEdgeInd(i) );
1409 Standard_Real a1, b1, a2, b2;
1410 BRep_Tool::Range ( E1, myFace, a1, b1 );
1411 BRep_Tool::Range ( E2, myFace, a2, b2 );
1412 if ( Abs ( IntEdgePar(j) - ( E1.Orientation() == TopAbs_FORWARD ? b1 : a1 ) ) < ::Precision::PConfusion() &&
1413 Abs ( IntEdgePar(i) - ( E2.Orientation() == TopAbs_FORWARD ? a2 : b2 ) ) < ::Precision::PConfusion() ) {
1414 IntLinePar.Remove(i);
1415 IntEdgePar.Remove(i);
1416 IntEdgeInd.Remove(i);
1424 //sequence of real codes for each segment
1425 TColStd_SequenceOfInteger aNewSegCodes;
1426 // Compute segment codes (left side of line, right or tangential)
1427 for ( i=1; i <= IntEdgePar.Length(); i++ ) {
1428 j = ( i < IntEdgePar.Length() ? i + 1 : 1 );
1429 Standard_Integer code = ComputeCode ( sewd, line, IntEdgeInd(i), IntEdgeInd(j),
1430 IntEdgePar(i), IntEdgePar(j),isnonmanifold );
1431 SegmentCodes.Append ( code );
1434 // for EXTERNAL wire, i.e. another joint line, every point is double intersection
1435 if ( wire.Orientation() == TopAbs_EXTERNAL ) {
1436 for ( i=1; i <= IntEdgePar.Length(); i++ )
1438 IntCode.Append ( ITP_TANG | IOR_BOTH );
1439 aNewSegCodes.Append(SegmentCodes(i));
1442 // For real (closed) wire, analyze tangencies
1444 if(wire.Orientation() != TopAbs_INTERNAL) {
1445 // Two consecutive tangential segments are considered as one, merge them.
1446 for ( i=1; i <= IntEdgePar.Length(); i++ ) {
1447 j = ( i > 1 ? i-1 : IntEdgePar.Length() );
1449 int k = ( i < IntEdgePar.Length() ? i + 1 : 1 ); // [ACIS22539]
1451 if ( SegmentCodes(j) == IOR_UNDEF &&
1452 SegmentCodes(i) == IOR_UNDEF ) {
1454 // Very specific case when the constructed seam edge
1455 // overlaps with spur edge [ACIS22539]
1456 if (myClosedMode && (IntLinePar(i) - IntLinePar(j)) * (IntLinePar(k) - IntLinePar(i)) <= 0. )
1459 IntEdgeInd.Remove(i);
1460 IntEdgePar.Remove(i);
1461 IntLinePar.Remove(i);
1462 SegmentCodes.Remove(i);
1467 //pdn exit if all split points removed
1468 if ( IntEdgePar.Length() <1 ) {
1469 return Standard_False; //pdn ??
1472 // Analyze type of intersection point and encode it
1473 // Three kinds of points (ITP): clear intersection, tangency in-point,
1474 // beginning and end of tangential segment.
1475 // Orientation (IOR) tells on which side of line edge crosses it
1476 j = IntEdgePar.Length();
1478 for ( i=1; i <= IntEdgePar.Length(); j = i++ ) {
1479 Standard_Integer codej = SegmentCodes(j);
1480 Standard_Integer codei = SegmentCodes(i);
1481 if ( myClosedMode ) {
1482 if ( ( codej & IOR_BOTH ) == IOR_BOTH ) //IOR_LEFT : IOR_RIGHT
1483 codej = ( codej & IOR_POS ? IOR_RIGHT : IOR_LEFT );
1484 if ( ( codei & IOR_BOTH ) == IOR_BOTH ) //IOR_RIGHT : IOR_LEFT
1485 codei = ( codei & IOR_POS ? IOR_LEFT : IOR_RIGHT );
1486 aNewSegCodes.Append ( codei );
1487 if(IntEdgeInd(i) == IntEdgeInd(j))
1488 aNewSegCodes.Append ( codej );
1492 aNewSegCodes.Append ( codei );
1493 Standard_Integer ipcode = ( codej | codei );
1494 if ( codej == IOR_UNDEF ) { // previous segment was tangency
1495 if ( IntLinePar(i) > IntLinePar (j) )
1496 ipcode |= ITP_ENDSEG; // end of segment
1497 else ipcode |= ITP_BEGSEG; // beginning of segment
1499 else if ( codei == IOR_UNDEF ) { // current segment is tangency
1500 if ( IntLinePar ( i < IntLinePar.Length() ? i+1 : 1 ) > IntLinePar(i) )
1501 ipcode |= ITP_BEGSEG; // beginning of segment
1502 else ipcode |= ITP_ENDSEG; // end of segment
1504 //internal wire can be only tangent
1505 else if ( i == j ) ipcode |= ( ( ipcode & IOR_BOTH ) == IOR_BOTH && !isnonmanifold ? ITP_INTER : ITP_TANG );
1506 else if ( codei == codej || isnonmanifold) ipcode |= ITP_TANG; // tangency in-point
1507 else ipcode |= ITP_INTER; // standard crossing
1508 IntCode.Append ( ipcode );
1512 //=======================================
1513 // Split edges in the wire by intersection points and fill vertices array
1514 TopTools_SequenceOfShape IntVertices;
1515 wire = SplitWire ( wire, IntEdgeInd, IntEdgePar, IntVertices,
1516 aNewSegCodes, isCutByU, cutIndex );
1518 // add all data to input arrays
1519 for ( i=1; i <= IntLinePar.Length(); i++ ) {
1520 SplitLinePar.Append ( IntLinePar(i) );
1521 SplitLineCode.Append ( IntCode(i) );
1522 SplitLineVertex.Append ( IntVertices(i) );
1525 return Standard_True;
1528 //=======================================================================
1529 //function : SplitByLine
1531 //=======================================================================
1533 void ShapeFix_ComposeShell::SplitByLine (ShapeFix_SequenceOfWireSegment &wires,
1534 const gp_Lin2d &line,
1535 const Standard_Boolean isCutByU,
1536 const Standard_Integer cutIndex)
1538 TColStd_SequenceOfReal SplitLinePar;
1539 TColStd_SequenceOfInteger SplitLineCode;
1540 TopTools_SequenceOfShape SplitLineVertex;
1542 // split wires one by one, collecting data on intersection points
1543 Standard_Integer i; // svv #1
1544 for ( i=1; i <= wires.Length(); i++ ) {
1545 SplitByLine ( wires(i), line, isCutByU, cutIndex,
1546 SplitLinePar, SplitLineCode, SplitLineVertex );
1549 // sort intersection points along parameter on cutting line
1550 for ( i = SplitLinePar.Length(); i >1; i-- )
1551 for ( Standard_Integer j=1; j < i; j++ ) {
1552 if ( SplitLinePar(j) > SplitLinePar(j+1) ) {
1553 SplitLinePar.Exchange ( j, j+1 );
1554 SplitLineCode.Exchange ( j, j+1 );
1555 SplitLineVertex.Exchange ( j, j+1 );
1559 // merge null-length tangential segments into one-point tangencies or intersections
1560 for ( i = 1; i < SplitLinePar.Length(); i++ ) {
1561 if ( Abs ( SplitLinePar(i+1) - SplitLinePar(i) ) > ::Precision::PConfusion() && !SplitLineVertex(i).IsSame(SplitLineVertex(i+1)) ) continue;
1562 if ( ( SplitLineCode(i) & ITP_ENDSEG &&
1563 SplitLineCode(i+1) & ITP_BEGSEG ) ||
1564 ( SplitLineCode(i) & ITP_BEGSEG &&
1565 SplitLineCode(i+1) & ITP_ENDSEG ) ) {
1566 Standard_Integer code = ( SplitLineCode(i) | SplitLineCode(i+1) ) & IOR_BOTH;
1567 SplitLineCode.SetValue ( i, code | ( code == IOR_BOTH ? ITP_INTER : ITP_TANG ) );
1568 SplitLinePar.Remove(i+1);
1569 SplitLineCode.Remove(i+1);
1570 SplitLineVertex.Remove(i+1);
1574 // go along line, split it by intersection points and create edges
1575 // (only for internal parts, in particular not for tangential segments)
1577 Standard_Integer parity = 0; // 0 - out, 1 - in
1578 Standard_Integer halfparity = 0; // left/right for tangential segments
1579 Standard_Integer tanglevel = 0; // tangency nesting level
1580 for ( i = 1; i <= SplitLinePar.Length(); i++ ) {
1581 Standard_Integer code = SplitLineCode(i);
1582 Standard_Boolean interior = ( !tanglevel && parity % 2 ); // create an edge
1583 if ( code & ITP_INTER ) { // crossing
1586 else if ( code & ITP_BEGSEG ) { // beginning of tangential segment
1588 if ( ! halfparity ) halfparity = ( code & IOR_BOTH );
1589 else if ( halfparity != ( code & IOR_BOTH ) ) parity++;
1591 else if ( code & ITP_ENDSEG ) { // end of tangential segment
1593 if ( ! halfparity ) halfparity = ( code & IOR_BOTH );
1594 else if ( halfparity != ( code & IOR_BOTH ) ) parity++;
1596 if ( tanglevel <0 ) {
1597 // myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL4 );
1599 cout << "Warning: ShapeFix_ComposeShell::SplitByLine: tangency level <0 !" << endl;
1602 if ( ! interior ) continue;
1604 // apply context to vertices (to perform replacing/merging vertices)
1606 TopoDS_Shape tmpV1 = Context()->Apply ( SplitLineVertex(i-1) );
1607 TopoDS_Shape tmpV2 = Context()->Apply ( SplitLineVertex(i) );
1608 TopoDS_Vertex V1 = TopoDS::Vertex ( tmpV1 );
1609 TopoDS_Vertex V2 = TopoDS::Vertex ( tmpV2 );
1610 // protection against creating null-length edges
1611 if ( SplitLinePar(i) - SplitLinePar(i-1) < ::Precision::PConfusion() ) {
1614 cout << "Info: ShapeFix_ComposeShell::SplitByLine: Short segment ignored" << endl;
1616 if ( ! V1.IsSame ( V2 ) ) { // merge coincident vertices
1617 ShapeBuild_Vertex sbv;
1618 TopoDS_Vertex V = sbv.CombineVertex ( V1, V2 );
1619 Context()->Replace ( V1, V.Oriented ( V1.Orientation() ) );
1620 Context()->Replace ( V2, V.Oriented ( V2.Orientation() ) );
1623 cout << "Info: ShapeFix_ComposeShell::SplitByLine: Coincided vertices merged" << endl;
1629 // create an edge (without 3d curve), put it in wire segment and add to sequence
1630 // NOTE: i here is always >1
1632 B.MakeEdge ( edge );
1633 V1.Orientation ( TopAbs_FORWARD );
1634 V2.Orientation ( TopAbs_REVERSED );
1637 Handle(Geom2d_Line) Lin1 = new Geom2d_Line ( line );
1638 Handle(Geom2d_Line) Lin2 = new Geom2d_Line ( line );
1639 B.UpdateEdge ( edge, Lin1, Lin2, myFace, ::Precision::Confusion() );
1640 B.Range ( edge, myFace, SplitLinePar(i-1), SplitLinePar(i) );
1642 Handle(ShapeExtend_WireData) sbwd = new ShapeExtend_WireData;
1644 ShapeFix_WireSegment seg ( sbwd, TopAbs_EXTERNAL );
1646 // set patch indices
1647 DefinePatch ( seg, IOR_UNDEF, isCutByU, cutIndex );
1649 Standard_Real shiftU =
1650 (myClosedMode && myUClosed ? ShapeAnalysis::AdjustToPeriod(SplitLinePar(i-1) -TOLINT, myGrid->UJointValue(1), myGrid->UJointValue(2)) : 0.);
1651 Standard_Real aPar = SplitLinePar(i-1) + shiftU;
1653 seg.DefineIUMin ( 1, GetPatchIndex ( aPar+::Precision::PConfusion(), myGrid->UJointValues(), myUClosed ) );
1654 seg.DefineIUMax ( 1, GetPatchIndex ( aPar-::Precision::PConfusion(), myGrid->UJointValues(), myUClosed ) + 1 );
1657 Standard_Real shiftV = (myClosedMode && myVClosed ? ShapeAnalysis::AdjustToPeriod(SplitLinePar(i-1) -TOLINT, myGrid->VJointValue(1), myGrid->VJointValue(2)) : 0.);
1658 Standard_Real aPar = SplitLinePar(i-1) + shiftV;
1659 seg.DefineIVMin ( 1, GetPatchIndex ( aPar+::Precision::PConfusion(), myGrid->VJointValues(), myVClosed ) );
1660 seg.DefineIVMax ( 1, GetPatchIndex ( aPar-::Precision::PConfusion(), myGrid->VJointValues(), myVClosed ) + 1 );
1662 wires.Append ( seg );
1665 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL4 );
1667 cout << "Error: ShapeFix_ComposeShell::SplitByLine: parity error" << endl;
1671 // Apply context to all wires to perform all recorded replacements/merging
1672 for ( i=1; i <= wires.Length(); i++ ) {
1673 for ( Standard_Integer j=1; j <= wires(i).NbEdges(); )
1674 j += ApplyContext ( wires(i), j, Context() );
1678 //=======================================================================
1679 //function : SplitByGrid
1681 //=======================================================================
1683 void ShapeFix_ComposeShell::SplitByGrid (ShapeFix_SequenceOfWireSegment &seqw)
1685 // process splitting by U- anv V-seams (i.e. U=const and V=const curves)
1686 // closed composite surface is processed as periodic
1687 Standard_Real Uf,Ul,Vf,Vl;
1688 BRepTools::UVBounds(myFace,Uf,Ul,Vf,Vl);
1689 Standard_Real Umin,Umax,Vmin,Vmax;
1690 myGrid->Bounds(Umin,Umax,Vmin,Vmax);
1692 //value of precision to define number of patch should be the same as used in the definitin position of point realtively to seam edge (TOLINT)
1693 Standard_Real pprec = TOLINT;//::Precision::PConfusion();
1694 Standard_Integer i = 1;
1697 //for closed mode when only one patch exist and location of the splitting line is coinsident with first joint value
1698 //Therefore in this case it is necessary to move all wire segments in the range of the patch between first and last joint
1699 //values. Then all wire segments are lie between -period and period in order to have valid split ranges after splitting.
1700 //Because for closed mode cut index always equal to 1 and parts of segments after splitting always should have index either (0,1) or (1,2).
1701 for ( i=1; i <= seqw.Length(); i++ )
1703 ShapeFix_WireSegment &wire = seqw(i);
1705 TopoDS_Shape atmpF = myFace.EmptyCopied();
1707 atmpF.Orientation(TopAbs_FORWARD);
1708 aB.Add(atmpF, wire.WireData()->Wire());
1709 Standard_Real Uf1,Ul1,Vf1,Vl1;
1710 ShapeAnalysis::GetFaceUVBounds(TopoDS::Face(atmpF),Uf1,Ul1,Vf1,Vl1);
1712 //for closed mode it is necessary to move wire segment in the interval defined by first and last grid UV values
1713 Standard_Real shiftU = (myClosedMode && myUClosed ? ShapeAnalysis::AdjustToPeriod(Ul1 -pprec, myGrid->UJointValue(1), myGrid->UJointValue(2)) : 0.);
1714 Standard_Real shiftV = (myClosedMode && myVClosed ? ShapeAnalysis::AdjustToPeriod(Vl1 -pprec, myGrid->VJointValue(1), myGrid->VJointValue(2)) : 0.);
1719 // limit patch indices to be in range of grid (extended for periodic) (0, 2)
1720 //in same cases for example trj4_pm2-ug-203.stp (entity #8024) wire in 2D space has length greater then period
1721 Standard_Integer iumin = Max(0,GetPatchIndex ( Uf1+pprec, myGrid->UJointValues(), myUClosed ));
1722 Standard_Integer iumax = GetPatchIndex ( Ul1-pprec, myGrid->UJointValues(), myUClosed ) + 1;
1724 for ( Standard_Integer j=1; j <= wire.NbEdges(); j++ ) {
1725 wire.DefineIUMin ( j, iumin );
1726 wire.DefineIUMax ( j, iumax );
1729 Standard_Integer ivmin = Max(0,GetPatchIndex ( Vf1+pprec, myGrid->VJointValues(), myVClosed ));
1730 Standard_Integer ivmax = GetPatchIndex ( Vl1-pprec, myGrid->VJointValues(), myVClosed ) + 1;
1732 for ( Standard_Integer j=1; j <= wire.NbEdges(); j++ ) {
1733 wire.DefineIVMin ( j, ivmin );
1734 wire.DefineIVMax ( j, ivmax );
1740 // limit patch indices to be in range of grid (extended for periodic)
1741 Standard_Integer iumin = GetPatchIndex ( Uf+pprec, myGrid->UJointValues(), myUClosed );
1742 Standard_Integer iumax = GetPatchIndex ( Ul-pprec, myGrid->UJointValues(), myUClosed ) + 1;
1743 for ( i=1; i <= seqw.Length(); i++ ) {
1744 ShapeFix_WireSegment &wire = seqw(i);
1745 for ( Standard_Integer j=1; j <= wire.NbEdges(); j++ ) {
1746 wire.DefineIUMin ( j, iumin );
1747 wire.DefineIUMax ( j, iumax );
1750 Standard_Integer ivmin = GetPatchIndex ( Vf+pprec, myGrid->VJointValues(), myVClosed );
1751 Standard_Integer ivmax = GetPatchIndex ( Vl-pprec, myGrid->VJointValues(), myVClosed ) + 1;
1752 for ( i=1; i <= seqw.Length(); i++ ) {
1753 ShapeFix_WireSegment &wire = seqw(i);
1754 for ( Standard_Integer j=1; j <= wire.NbEdges(); j++ ) {
1755 wire.DefineIVMin ( j, ivmin );
1756 wire.DefineIVMax ( j, ivmax );
1762 for ( i = ( myUClosed ? 1 : 2 ); i <= myGrid->NbUPatches(); i++ ) {
1763 gp_Pnt2d pos ( myGrid->UJointValue(i), 0. ); // 0. - for infinite ranges: myGrid->VJointValue(1) ;
1764 gp_Lin2d line ( pos, gp_Dir2d ( 0., 1. ) );
1765 if ( ! myClosedMode && myUClosed ) {
1766 Standard_Real period = Umax - Umin;
1767 Standard_Real X = pos.X();
1768 Standard_Real sh = ShapeAnalysis::AdjustToPeriod(X,Uf, Uf+period);
1769 for( ; X+sh <= Ul+pprec; sh += period ) {
1770 gp_Lin2d ln = line.Translated(gp_Vec2d(sh,0));
1771 Standard_Integer cutIndex = GetPatchIndex ( X+sh+pprec, myGrid->UJointValues(), myUClosed );
1772 SplitByLine ( seqw, ln, Standard_True, cutIndex );
1776 SplitByLine ( seqw, line, Standard_True, i );
1780 for ( i = ( myVClosed ? 1 : 2 ); i <= myGrid->NbVPatches(); i++ ) {
1781 gp_Pnt2d pos ( 0., myGrid->VJointValue(i) );
1782 gp_Lin2d line ( pos, gp_Dir2d ( 1., 0. ) );
1783 if ( ! myClosedMode && myVClosed ) {
1784 Standard_Real period = Vmax - Vmin;
1785 Standard_Real Y = pos.Y();
1786 Standard_Real sh = ShapeAnalysis::AdjustToPeriod(Y,Vf, Vf+period);
1787 for( ; Y+sh <= Vl+pprec; sh += period) {
1788 gp_Lin2d ln = line.Translated(gp_Vec2d(0,sh));
1789 Standard_Integer cutIndex = GetPatchIndex ( Y+sh+pprec, myGrid->VJointValues(), myVClosed );
1790 SplitByLine ( seqw, ln, Standard_False, cutIndex );
1794 SplitByLine ( seqw, line, Standard_False, i );
1798 //=======================================================================
1799 //function : BreakWires
1801 //=======================================================================
1803 void ShapeFix_ComposeShell::BreakWires (ShapeFix_SequenceOfWireSegment &seqw)
1805 // split all the wires by vertices
1806 TopTools_MapOfShape splitVertices;
1807 ShapeAnalysis_Edge sae;
1809 // first collect splitting vertices
1810 Standard_Integer i; // svv #1
1811 for ( i=1; i <= seqw.Length(); i++ ) {
1812 TopAbs_Orientation ori_wire = seqw(i).Orientation();
1813 if ( ori_wire != TopAbs_EXTERNAL &&
1814 ori_wire != TopAbs_INTERNAL) continue;
1816 Handle(ShapeExtend_WireData) sbwd = seqw(i).WireData();
1817 for ( Standard_Integer j=1; j <= sbwd->NbEdges(); j++ ) {
1818 TopoDS_Edge edge = sbwd->Edge ( j );
1819 TopAbs_Orientation ori_edge = (ori_wire == TopAbs_EXTERNAL ? ori_wire : edge.Orientation());
1820 if(ori_edge == TopAbs_EXTERNAL) {
1821 splitVertices.Add ( sae.FirstVertex ( edge ) );
1822 splitVertices.Add ( sae.LastVertex ( edge ) );
1827 // and then split each vire
1828 // Here each wire is supposed to be connected (while probably not closed)
1829 for ( i=1; i <= seqw.Length(); i++ ) {
1830 TopAbs_Orientation ori = seqw(i).Orientation();
1831 ShapeFix_WireSegment wire = seqw(i);
1834 Handle(ShapeExtend_WireData) sbwd = wire.WireData();
1836 // find first vertex for split
1837 Standard_Integer j; // svv #1
1838 for ( j=1; j <= sbwd->NbEdges(); j++ ) {
1839 TopoDS_Vertex V = sae.FirstVertex ( sbwd->Edge(j) );
1840 if ( splitVertices.Contains ( V ) ) break;
1842 if ( j > sbwd->NbEdges() ) continue; // splitting not needed
1844 // if first split of closed edge is not its start, make permutation
1845 Standard_Integer shift = 0;
1846 if ( j >1 && ! myClosedMode && wire.IsClosed() ) {
1847 TopoDS_Vertex V = sae.FirstVertex ( sbwd->Edge(1) );
1848 if ( ! splitVertices.Contains ( V ) )
1850 // wire.SetLast ( j-1 );
1853 // perform splitting
1854 Standard_Integer nbnew = 0;
1855 ShapeFix_WireSegment newwire;
1856 TopAbs_Orientation curOri = ori;
1857 for ( Standard_Integer ind=1; ind <= sbwd->NbEdges(); ind++ ) {
1858 j = 1 + ( ind - 1 + shift ) % sbwd->NbEdges();
1859 TopoDS_Edge edge = sbwd->Edge(j);
1860 TopoDS_Vertex V = sae.FirstVertex ( edge );
1861 if ( ind==1 || splitVertices.Contains ( V ) ) {
1862 if ( newwire.NbEdges() ) {
1863 newwire.Orientation ( curOri );
1864 // ShapeFix_WireSegment seg ( newwire, ori );
1865 seqw.InsertBefore ( i++, newwire );
1871 Standard_Integer iumin, iumax, ivmin, ivmax;
1872 wire.GetPatchIndex ( j, iumin, iumax, ivmin, ivmax );
1873 if(ori == TopAbs_INTERNAL && edge.Orientation() == TopAbs_EXTERNAL ) {
1874 curOri = TopAbs_EXTERNAL;
1875 edge.Orientation(TopAbs_FORWARD);
1878 newwire.AddEdge ( 0, edge, iumin, iumax, ivmin, ivmax );
1881 newwire.Orientation ( curOri );
1882 // ShapeFix_WireSegment seg ( newwire, ori );
1883 seqw.SetValue ( i, newwire );
1888 //=======================================================================
1889 //function : IsShortSegment
1890 //purpose : auxilary
1891 //=======================================================================
1892 // BUC60035 2053: check if wire segment is very short (in order not to skip it)
1894 // 1 - short even in 2d (to be taken always)
1895 // -1 - short in 3d but not in 2d (to be checked after algo and atteching to
1896 // another wire if alone)
1897 static Standard_Integer IsShortSegment (const ShapeFix_WireSegment &seg,
1898 const TopoDS_Face myFace,
1899 const Handle(Geom_Surface)& myGrid,
1900 const TopLoc_Location &myLoc,
1901 const Standard_Real UResolution,
1902 const Standard_Real VResolution)
1904 TopoDS_Vertex Vf = seg.FirstVertex();
1905 if ( ! Vf.IsSame ( seg.LastVertex() ) ) return Standard_False;
1907 gp_Pnt pnt = BRep_Tool::Pnt(Vf);
1908 Standard_Real tol = BRep_Tool::Tolerance(Vf);
1909 Standard_Real tol2 = tol*tol;
1911 Standard_Integer code = 1;
1912 ShapeAnalysis_Edge sae;
1913 Handle(ShapeExtend_WireData) sbwd = seg.WireData();
1914 for ( Standard_Integer i=1; i <= sbwd->NbEdges(); i++ ) {
1915 TopoDS_Edge edge = sbwd->Edge ( i );
1916 if ( ! Vf.IsSame ( sae.LastVertex ( edge ) ) ) return Standard_False;
1917 Handle(Geom2d_Curve) c2d;
1919 if ( ! sae.PCurve ( edge, myFace, c2d, f, l ) ) continue;
1922 gp_Pnt2d endPnt = c2d->Value(l);
1923 gp_Pnt2d midPnt = c2d->Value((f+l)/2);
1924 if ( ! IsCoincided ( endPnt, midPnt, UResolution, VResolution, tol ) ) code = -1;
1927 gp_Pnt midPnt3d = myGrid->Value(midPnt.X(),midPnt.Y());
1928 if ( ! myLoc.IsIdentity() ) midPnt3d.Transform ( myLoc.Transformation() );
1929 if ( midPnt3d.SquareDistance(pnt) > tol2) return 0;
1934 //=======================================================================
1935 //function : IsSamePatch
1936 //purpose : auxilary
1937 //=======================================================================
1938 static Standard_Boolean IsSamePatch (const ShapeFix_WireSegment wire,
1939 const Standard_Integer NU,
1940 const Standard_Integer NV,
1941 Standard_Integer &iumin,
1942 Standard_Integer &iumax,
1943 Standard_Integer &ivmin,
1944 Standard_Integer &ivmax,
1945 const Standard_Boolean extend=Standard_False)
1947 // get patch indices for current segment
1948 Standard_Integer jumin, jumax, jvmin, jvmax;
1949 wire.GetPatchIndex ( 1, jumin, jumax, jvmin, jvmax );
1951 // shift to the same period
1952 Standard_Integer du=0, dv=0;
1953 if ( jumin - iumin > NU ) du =-( jumin - iumin ) / NU;
1954 else if ( iumin - jumin > NU ) du = ( iumin - jumin ) / NU;
1955 if ( jvmin - ivmin > NV ) dv =-( jvmin - ivmin ) / NV;
1956 else if ( ivmin - jvmin > NV ) dv = ( ivmin - jvmin ) / NV;
1957 if ( du ) { jumin += du * NU; jumax += du * NU; }
1958 if ( dv ) { jvmin += dv * NV; jvmax += dv * NV; }
1960 // compute common (extended) indices
1961 Standard_Integer iun = Min ( iumin, jumin );
1962 Standard_Integer iux = Max ( iumax, jumax );
1963 Standard_Integer ivn = Min ( ivmin, jvmin );
1964 Standard_Integer ivx = Max ( ivmax, jvmax );
1965 Standard_Boolean ok = ( iun == iux || iun+1 == iux ) &&
1966 ( ivn == ivx || ivn+1 == ivx );
1967 if ( ok && extend ) { iumin = iun; iumax = iux; ivmin = ivn; ivmax = ivx; }
1971 //=======================================================================
1972 //function : CollectWires
1974 //=======================================================================
1976 void ShapeFix_ComposeShell::CollectWires (ShapeFix_SequenceOfWireSegment &wires,
1977 ShapeFix_SequenceOfWireSegment &seqw)
1979 ShapeAnalysis_Edge sae;
1980 Standard_Integer i; // svv #1
1981 // Collect information on short closed segments
1982 TColStd_Array1OfInteger shorts(1,seqw.Length());
1983 for ( i=1; i <= seqw.Length(); i++ ) {
1984 if(seqw(i).IsVertex() || seqw(i).Orientation() == TopAbs_INTERNAL) {
1985 wires.Append(seqw(i));
1991 for ( Standard_Integer k=1; ! myClosedMode && k <= seqw(i).NbEdges(); k++ )
1992 if ( ! seqw(i).CheckPatchIndex ( k ) ) {
1993 cout << "Warning: ShapeFix_ComposeShell::CollectWires: Wrong patch indices" << endl;
1997 Standard_Integer isshort = IsShortSegment ( seqw(i), myFace, myGrid, myLoc,
1998 myUResolution, myVResolution );
1999 shorts.SetValue ( i, isshort );
2001 ( seqw(i).Orientation() == TopAbs_EXTERNAL ||
2002 ( seqw(i).NbEdges() == 1 && //:abv 13.05.02: OCC320 - remove if degenerated
2003 BRep_Tool::Degenerated ( seqw(i).Edge(1) ) ) ) ) {
2005 cout << "Info: ShapeFix_ComposeShell::CollectWires: Short segment ignored" << endl;
2007 seqw(i).Orientation ( TopAbs_INTERNAL );
2011 Handle(ShapeExtend_WireData) sbwd;
2012 gp_Pnt2d endPnt, firstPnt;
2013 gp_Vec2d endTan, firstTan;
2014 TopoDS_Vertex firstV, endV;
2015 TopoDS_Edge firstEdge, lastEdge;
2016 Standard_Real tol = 0;
2017 Standard_Integer iumin = 0, iumax = 0, ivmin = 0, ivmax = 0;
2018 Standard_Real dsu=0., dsv=0.;
2019 Standard_Boolean canBeClosed = Standard_False;
2021 Standard_Integer index = 0;
2022 Standard_Boolean misoriented = Standard_True, samepatch = Standard_False;
2023 Standard_Boolean reverse = Standard_False, connected = Standard_False;
2024 Standard_Real angle = -M_PI, mindist = RealLast();
2025 Standard_Integer weigth = 0;
2026 Standard_Real shiftu=0., shiftv=0.;
2028 // find next segment to connect (or first if sbwd is NULL)
2029 for ( i = 1; i <= seqw.Length(); i++ ) {
2030 ShapeFix_WireSegment seg = seqw.Value(i);
2033 TopAbs_Orientation anOr = seg.Orientation();
2034 if ( anOr == TopAbs_INTERNAL ) continue;
2036 // for first segment, take any
2037 if ( sbwd.IsNull() ) {
2038 if ( shorts(i) >0 ) continue;
2039 if ( anOr == TopAbs_EXTERNAL ) continue;
2040 if ( anOr == TopAbs_FORWARD ) reverse = Standard_True;
2042 seg.GetPatchIndex ( 1, iumin, iumax, ivmin, ivmax );
2044 misoriented = Standard_False;
2049 // check whether current segment is on the same patch with previous
2050 Standard_Integer sp = IsSamePatch ( seg, myGrid->NbUPatches(), myGrid->NbVPatches(),
2051 iumin, iumax, ivmin, ivmax );
2053 // not same patch has lowest priority
2054 if ( ! sp && ( canBeClosed || ( index && samepatch ) ) ) continue;
2056 // try to connect, with the following priorities:
2057 // The name of property Weigth:
2058 // sharing vertex auto
2061 // misorientation = 0 8
2062 // connected in 2d 4
2066 Handle(ShapeExtend_WireData) wire = seg.WireData();
2067 for ( Standard_Integer j=0; j <2; j++ ) {
2068 if ( ! endV.IsSame ( j ? seg.LastVertex() : seg.FirstVertex() ) ) continue;
2070 // check for misorientation only if nothing better is found
2071 Standard_Integer misor = ( anOr == ( j ? TopAbs_REVERSED : TopAbs_FORWARD ) );
2072 // if ( misor ) continue; // temporarily, to be improved
2074 // returning back by the same edge is lowest priority
2075 if ( lastEdge.IsSame ( wire->Edge ( j ? wire->NbEdges() : 1 ) ) ) {
2076 if ( ! index && ! canBeClosed ) { // || ( sp && ! samepatch ) ) {
2079 connected = Standard_True;
2080 misoriented = misor;
2082 weigth = ( sp ? 16 : 0 ) + ( connected ? 8 : 0 ) + (misor==0 ? 4 : 0);
2088 // compute starting tangent
2092 Standard_Real edgeTol = 0;
2093 for ( k=1; k <= wire->NbEdges(); k++ ) {
2094 TopoDS_Shape tmpE = wire->Edge(wire->NbEdges()-k+1).Reversed();
2095 TopoDS_Edge edge = ( j ? TopoDS::Edge ( tmpE ) :
2097 edgeTol = BRep_Tool::Tolerance ( edge );
2098 //if ( sae.GetEndTangent2d ( edge, myFace, Standard_False, lPnt, lVec ) ) break;
2099 if ( sae.GetEndTangent2d ( edge, myFace, Standard_False, lPnt, lVec, 1.e-3 ) ) break;
2101 if ( k > wire->NbEdges() ) myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
2103 if ( myClosedMode ) {
2105 shiftu = ShapeAnalysis::AdjustByPeriod ( lPnt.X(), endPnt.X(), myUPeriod );
2106 lPnt.SetX ( lPnt.X() + shiftu );
2109 shiftv = ShapeAnalysis::AdjustByPeriod ( lPnt.Y(), endPnt.Y(), myVPeriod );
2110 lPnt.SetY ( lPnt.Y() + shiftv );
2114 // short segment is to be taken with highest priority by angle
2115 Standard_Real ang = ( shorts(i) >0 ? M_PI : endTan.Angle ( lVec ) );
2116 if ( myClosedMode && shorts(i) <=0 && M_PI-ang < ::Precision::Angular() )
2117 ang = 0.; // abv 21 Mar 00: trj3_s1-md-214.stp #2471: avoid going back
2119 // abv 05 Feb 02: face from Parasolid: use tolerance of edges for check
2120 // for coincidence (instead of vertex tolerance) in order
2121 // this check to be in agreement with check for position of wire segments
2122 // thus avoiding bad effects on overlapping edges
2123 Standard_Real ctol = Max ( edgeTol, BRep_Tool::Tolerance(lastEdge) );
2124 Standard_Boolean conn = IsCoincided ( endPnt, lPnt, myUResolution, myVResolution, ctol );
2125 Standard_Real dist = endPnt.SquareDistance ( lPnt );
2127 // check if case is better than last found
2128 Standard_Integer w1 = ( sp ? 16 : 0 ) + ( conn ? 4 : 0 ) + (misor==0 ? 8 : 0);
2129 Standard_Integer tail1 = ( !conn && (dist < mindist) ? 2 : 0) + (ang > angle ? 1 : 0);
2130 Standard_Integer tail2 = ( !connected &&(dist > mindist) ? 2 : 0) + (ang < angle ? 1 : 0);
2131 if(w1+tail1 <= weigth+tail2)
2139 misoriented = misor;
2147 // if next segment found, connect it
2150 myInvertEdgeStatus = Standard_True;
2151 ShapeFix_WireSegment seg = seqw.Value(index);
2152 if ( sbwd.IsNull() ) sbwd = new ShapeExtend_WireData;
2153 else if ( samepatch ) { // extend patch indices
2154 IsSamePatch ( seg, myGrid->NbUPatches(), myGrid->NbVPatches(),
2155 iumin, iumax, ivmin, ivmax, Standard_True );
2158 //for closed mode in case if current segment is seam segment it is necessary to detect crossing seam edge
2159 //in order to have possibility to take candidate from other patch
2161 seg.GetPatchIndex ( 1, iumin, iumax, ivmin, ivmax );
2163 // TopAbs_Orientation or = seg.Orientation();
2164 if ( ! reverse ) sbwd->Add ( seg.WireData() );
2166 Handle(ShapeExtend_WireData) wire = new ShapeExtend_WireData;
2167 wire->ManifoldMode() = Standard_False;
2168 wire->Add ( seg.WireData() );
2169 wire->Reverse ( myFace );
2172 if ( seg.Orientation() == TopAbs_EXTERNAL )
2173 seg.Orientation ( reverse ? TopAbs_REVERSED : TopAbs_FORWARD );
2175 seg.Orientation ( TopAbs_INTERNAL );
2176 seqw.SetValue ( index, seg );
2178 else if ( sbwd.IsNull() ) break; // stop when no free segments available
2179 // for first segment, remember start point
2180 if ( endV.IsNull() ) {
2181 firstEdge = sbwd->Edge(1);
2182 firstV = sae.FirstVertex ( firstEdge );
2183 //sae.GetEndTangent2d ( firstEdge, myFace, Standard_False, firstPnt, firstTan );
2184 sae.GetEndTangent2d ( firstEdge, myFace, Standard_False, firstPnt, firstTan, 1.e-3 );
2187 // update last edge and vertex (only for not short segments)
2188 Standard_Boolean doupdate = ( index && ( shorts(index) <=0 || endV.IsNull() ) );
2190 lastEdge = sbwd->Edge ( sbwd->NbEdges() );
2191 endV = sae.LastVertex ( lastEdge );
2192 tol = BRep_Tool::Tolerance ( endV );
2193 // BUC60035 2053: iteration on edges is required
2194 Standard_Integer k; // svv #1
2195 for ( k=sbwd->NbEdges(); k >=1; k-- )
2196 //if ( sae.GetEndTangent2d ( sbwd->Edge ( k ), myFace, Standard_True, endPnt, endTan ) )
2197 if ( sae.GetEndTangent2d ( sbwd->Edge ( k ), myFace, Standard_True, endPnt, endTan, 1.e-3 ) )
2199 if ( k <1 ) myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
2200 if ( myUClosed ) endPnt.SetX ( endPnt.X() + dsu );
2201 if ( myVClosed ) endPnt.SetY ( endPnt.Y() + dsv );
2204 // if closed or no next segment found, add to wires
2205 canBeClosed = endV.IsSame ( firstV );
2206 if ( ! index || ( canBeClosed &&
2207 ! lastEdge.IsSame ( firstEdge ) && // cylinder (seam)
2208 IsCoincided ( endPnt, firstPnt, myUResolution, myVResolution, 2.* tol ) ) ) {
2209 if ( ! endV.IsSame ( sae.FirstVertex ( firstEdge ) ) ) {
2210 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL5 );
2212 cout << "Warning: ShapeFix_ComposeShell::CollectWires: can't close wire" << endl;
2215 ShapeFix_WireSegment s ( sbwd, TopAbs_FORWARD );
2216 s.DefineIUMin(1,iumin);
2217 s.DefineIUMax(1,iumax);
2218 s.DefineIVMin(1,ivmin);
2219 s.DefineIVMax(1,ivmax);
2223 canBeClosed = Standard_False;
2227 // Check if some wires are short in 3d (lie entirely inside one vertex),
2228 // and if yes try to merge them with others
2229 //pdn The short seqments are stil plased in "in" sequence.
2231 for ( i=1; i <= seqw.Length(); i++ ) {
2232 if ( shorts(i) != 1 ||
2233 seqw(i).IsVertex() ||
2234 seqw(i).Orientation() == TopAbs_INTERNAL ||
2235 seqw(i).Orientation() == TopAbs_EXTERNAL )
2238 // find any other wire containing the same vertex
2239 Handle(ShapeExtend_WireData) wd = seqw(i).WireData();
2240 TopoDS_Vertex V = seqw(i).FirstVertex();
2241 Standard_Integer minj=0, mink=0;
2244 Standard_Real mindist=0;
2245 Standard_Boolean samepatch = Standard_False;
2246 // Standard_Integer iumin, iumax, ivmin, ivmax;
2247 seqw(i).GetPatchIndex ( 1, iumin, iumax, ivmin, ivmax );
2248 sae.GetEndTangent2d ( wd->Edge(1), myFace, Standard_False, p2d, vec );
2249 for ( Standard_Integer j=1; j <= wires.Length(); j++ ) {
2250 // if ( j == i ) continue;
2251 // Handle(ShapeExtend_WireData)
2252 sbwd = wires(j).WireData();
2253 for ( Standard_Integer k=1; k <= sbwd->NbEdges(); k++ ) {
2254 if ( !V.IsSame ( sae.FirstVertex ( sbwd->Edge(k) ) ) ) continue; //pdn I suppose that short segment should be inserted into the SAME vertex.
2256 Standard_Integer sp = IsSamePatch ( wires(j), myGrid->NbUPatches(), myGrid->NbVPatches(),
2257 iumin, iumax, ivmin, ivmax );
2258 if ( samepatch && !sp) continue;
2260 sae.GetEndTangent2d ( sbwd->Edge(k), myFace, Standard_False, pp, vec );
2261 Standard_Real dist = pp.SquareDistance ( p2d );
2262 if ( sp && ! samepatch ) { minj = j; mink = k; mindist = dist;samepatch=sp;}
2264 if ( ! minj || mindist > dist ) { minj = j; mink = k; mindist = dist;samepatch=sp; }
2268 //pdn add into resulting sequence!
2269 ShapeFix_WireSegment s ( wd, TopAbs_FORWARD );
2272 cout <<"Warning: Short segment processed as separate wire"<<endl;
2277 // and if found, merge
2278 // Handle(ShapeExtend_WireData)
2279 sbwd = wires(minj).WireData();
2280 for ( Standard_Integer n=1; n <= wd->NbEdges(); n++ )
2281 sbwd->Add ( wd->Edge(n), mink++ );
2283 // wires.Remove ( i );
2288 //=======================================================================
2289 //function : DispatchWires
2291 //=======================================================================
2293 static gp_Pnt2d GetMiddlePoint (const ShapeFix_WireSegment wire,
2294 const TopoDS_Face face)
2296 if(wire.IsVertex()) {
2297 TopoDS_Vertex aV = wire.GetVertex();
2298 gp_Pnt aP3D = BRep_Tool::Pnt(aV );
2299 Handle(Geom_Surface) surf = BRep_Tool::Surface(face);
2300 Handle(ShapeAnalysis_Surface) aSurfTool = new ShapeAnalysis_Surface(surf);
2301 return aSurfTool->ValueOfUV(aP3D,Precision::Confusion());
2304 ShapeAnalysis_Edge sae;
2305 ShapeAnalysis_Curve sac;
2306 Handle(ShapeExtend_WireData) wd = wire.WireData();
2307 for(Standard_Integer i = 1; i <= wd->NbEdges(); i++) {
2308 TopoDS_Edge E = wd->Edge (i);
2309 Standard_Real cf,cl;
2310 Handle(Geom2d_Curve) c2d;
2311 if(sae.PCurve (E,face,c2d,cf,cl,Standard_False)) {
2312 sac.FillBndBox ( c2d, cf, cl, 3, Standard_False, box );
2313 // box.Add(c2d->Value(cf));
2314 // box.Add(c2d->Value(cl));
2315 // box.Add(c2d->Value((cl+cf)/2.));
2318 if ( box.IsVoid() ) return gp_Pnt2d(0.,0.);
2319 Standard_Real aXmin, aYmin, aXmax, aYmax;
2320 box.Get(aXmin, aYmin, aXmax, aYmax);
2321 return gp_Pnt2d ( 0.5 * ( aXmax + aXmin ), 0.5 * ( aYmax + aYmin ) );
2324 //=======================================================================
2325 //function : MakeFacesOnPatch
2327 //=======================================================================
2329 void ShapeFix_ComposeShell::MakeFacesOnPatch (TopTools_SequenceOfShape &faces,
2330 const Handle(Geom_Surface)& surf,
2331 TopTools_SequenceOfShape &loops) const
2335 // Case of single loop: just add it to face
2336 if ( loops.Length() == 1 ) {
2337 TopoDS_Face newFace;
2338 B.MakeFace ( newFace, surf, myLoc, ::Precision::Confusion() );
2339 TopoDS_Shape aSH = loops.Value(1);
2340 if( aSH.ShapeType() != TopAbs_WIRE)
2342 TopoDS_Wire wire = TopoDS::Wire ( loops.Value(1) );
2344 B.Add ( newFace, wire );
2345 if(myInvertEdgeStatus) {
2346 Handle(ShapeFix_Face) sff = new ShapeFix_Face(newFace);
2347 sff->FixAddNaturalBoundMode() = Standard_False;
2348 TopTools_DataMapOfShapeListOfShape MapWires;
2350 sff->FixOrientation(MapWires);
2351 newFace = sff->Face();
2354 faces.Append ( newFace );
2358 // For several loops, first find roots
2359 // make pseudo-face,
2361 B.MakeFace ( pf, surf, myLoc, ::Precision::Confusion() );
2362 Handle(Geom_Surface) atSurf = BRep_Tool::Surface(pf);
2364 Handle(ShapeAnalysis_Surface) aSurfTool = new ShapeAnalysis_Surface(atSurf);
2365 TopTools_SequenceOfShape roots;
2366 Standard_Integer i; // svv #1
2367 for ( i = 1; i <= loops.Length(); i++ ) {
2370 TopoDS_Shape aShape = loops(i);
2371 if(aShape.ShapeType() != TopAbs_WIRE ||
2372 (aShape.Orientation() != TopAbs_FORWARD && aShape.Orientation() != TopAbs_REVERSED))
2375 wr = TopoDS::Wire ( loops(i) );
2376 TopoDS_Iterator ew (wr);
2377 if ( ! ew.More() ) continue;
2379 TopoDS_Edge ed = TopoDS::Edge ( ew.Value() );
2380 while(ed.Orientation() != TopAbs_FORWARD &&
2381 ed.Orientation() != TopAbs_REVERSED ) {
2384 ed = TopoDS::Edge ( ew.Value() );
2388 if ( ! ew.More() ) continue;
2389 Standard_Real cf, cl;
2390 Handle(Geom2d_Curve) cw = BRep_Tool::CurveOnSurface ( ed, pf, cf, cl );
2391 if ( cw.IsNull() ) continue;
2392 unp = cw->Value ( 0.5 * ( cf + cl ) );
2394 Standard_Integer j; // svv #1
2395 for ( j = 1; j <= loops.Length(); j++ ) {
2396 if ( i == j ) continue;
2397 TopoDS_Shape aShape2 = loops(j);
2398 if(aShape2.ShapeType() != TopAbs_WIRE ||
2399 (aShape2.Orientation() != TopAbs_FORWARD &&
2400 aShape2.Orientation() != TopAbs_REVERSED))
2402 TopoDS_Wire w1 = TopoDS::Wire (aShape2);
2405 awtmp.Orientation(TopAbs_FORWARD);
2406 TopoDS_Iterator aIt(w1);
2407 Standard_Integer nbe =0;
2408 for( ; aIt.More() ; aIt.Next()) {
2409 if(aIt.Value().Orientation() == TopAbs_FORWARD ||
2410 aIt.Value().Orientation() == TopAbs_REVERSED) {
2411 B.Add(awtmp,aIt.Value());
2418 B.MakeFace ( fc, surf, myLoc, ::Precision::Confusion() );
2419 B.Add ( fc, awtmp );
2420 BRepTopAdaptor_FClass2d clas ( fc, ::Precision::PConfusion() );
2421 TopAbs_State stPoint = clas.Perform (unp,Standard_False);
2422 if(stPoint == TopAbs_ON || stPoint == TopAbs_UNKNOWN) {
2424 TopoDS_Edge anEdge = TopoDS::Edge ( ew.Value() );
2425 Standard_Real aCF, aCL;
2426 Handle(Geom2d_Curve) aCW = BRep_Tool::CurveOnSurface ( anEdge, pf, aCF, aCL);
2427 // handle tangential case (ON)
2428 while ( stPoint == TopAbs_ON || stPoint == TopAbs_UNKNOWN ) {
2429 stPoint = clas.Perform (aCW->Value(aCL), Standard_False );
2430 if ( ! ew.More() ) break;
2432 if ( ! ew.More() ) break;
2433 TopoDS_Edge edge = TopoDS::Edge ( ew.Value() );
2434 if(edge.Orientation() !=TopAbs_FORWARD &&
2435 edge.Orientation() !=TopAbs_REVERSED)
2437 Handle(Geom2d_Curve) c2d = BRep_Tool::CurveOnSurface ( edge, pf, aCF, aCL );
2438 if ( ! c2d.IsNull() ) aCW = c2d;
2441 TopAbs_State stInfin = clas.PerformInfinitePoint();
2442 if ( stPoint != stInfin ) break;
2444 if ( j > loops.Length()) {
2445 roots.Append ( wr );
2446 // loops.Remove ( i-- );
2450 // And remove them from the list of loops
2451 for ( i = 1; i <= loops.Length(); i++ )
2452 for ( Standard_Integer j = 1; j <= roots.Length(); j++ )
2453 if ( loops(i).IsSame ( roots(j) ) ) { loops.Remove(i--); break; }
2455 // check for lost wires, and if they are, make them roots
2456 if ( roots.Length() <=0 && loops.Length() >0 ) {
2458 cout << "Error: ShapeFix_ComposeShell::MakeFacesOnPatch: can't dispatch wires" << endl;
2460 for ( Standard_Integer j=1; j <= loops.Length(); j++ ) {
2461 roots.Append ( loops(j) );
2466 // Then iterate on loops
2467 for ( i=1; i <= roots.Length(); i++ ) {
2468 Standard_Boolean reverse = Standard_False;
2469 TopoDS_Wire wire = TopoDS::Wire ( roots(i) );
2471 B.MakeFace ( fc, surf, myLoc, ::Precision::Confusion() );
2473 BRepTopAdaptor_FClass2d clas ( fc, ::Precision::PConfusion() );
2474 if ( clas.PerformInfinitePoint() == TopAbs_IN ) {
2475 reverse = Standard_True;
2477 cout << "Warning: ShapeFix_ComposeShell::MakeFacesOnPatch: badly oriented wire" << endl;
2481 // find all holes for that loop
2482 TopTools_SequenceOfShape holes; // holes in holes not supported
2483 Standard_Integer j; // svv #1
2484 for ( j=1; j <= loops.Length(); j++ ) {
2486 if(loops(j).ShapeType() == TopAbs_WIRE) {
2487 TopoDS_Wire bw = TopoDS::Wire ( loops(j) );
2488 TopoDS_Iterator ew ( bw );
2489 if ( ! ew.More() ) continue;
2490 TopoDS_Edge ed = TopoDS::Edge ( ew.Value() );
2491 Standard_Real cf, cl;
2492 Handle(Geom2d_Curve) cw = BRep_Tool::CurveOnSurface ( ed, pf, cf, cl );
2493 if ( cw.IsNull() ) continue;
2494 unp = cw->Value ( 0.5 * ( cf + cl ) );
2496 else if(loops(j).ShapeType() == TopAbs_VERTEX) {
2497 TopoDS_Vertex aV = TopoDS::Vertex(loops(j));
2498 gp_Pnt aP = BRep_Tool::Pnt(aV);
2499 unp = aSurfTool->ValueOfUV(aP,Precision::Confusion());
2503 TopAbs_State state = clas.Perform (unp,Standard_False);
2504 if ( (Standard_Boolean) ( state == TopAbs_OUT ) == reverse ) {
2505 holes.Append ( loops(j) );
2506 loops.Remove ( j-- );
2510 // and add them to new face (no orienting is done)
2511 TopoDS_Face newFace;
2512 B.MakeFace ( newFace, surf, myLoc, ::Precision::Confusion() );
2513 B.Add ( newFace, wire );
2514 for ( j=1; j <= holes.Length(); j++ ) {
2515 TopoDS_Shape aSh = holes(j);
2516 if(aSh.ShapeType() == TopAbs_VERTEX) {
2517 TopoDS_Vertex aNewV = ShapeAnalysis_TransferParametersProj::CopyNMVertex(TopoDS::Vertex(aSh), newFace,myFace);
2518 Context()->Replace(aSh,aNewV);
2519 B.Add ( newFace,aNewV);
2522 B.Add ( newFace, holes(j) );
2524 faces.Append ( newFace );
2526 // check for lost wires, and if they are, make them roots
2527 if ( i == roots.Length() && loops.Length() >0 ) {
2529 cout << "Error: ShapeFix_ComposeShell::MakeFacesOnPatch: can't dispatch wires" << endl;
2531 for ( j=1; j <= loops.Length(); j++ ) {
2532 TopoDS_Shape aSh = loops(j);
2533 if(aSh.ShapeType() == TopAbs_WIRE && (aSh.Orientation() == TopAbs_FORWARD ||
2534 aSh.Orientation() == TopAbs_REVERSED))
2535 roots.Append ( loops(j) );
2542 //=======================================================================
2543 //function : DispatchWires
2545 //=======================================================================
2547 void ShapeFix_ComposeShell::DispatchWires (TopTools_SequenceOfShape &faces,
2548 ShapeFix_SequenceOfWireSegment& wires) const
2552 // in closed mode, apply FixShifted to all wires before dispatching them
2553 if ( myClosedMode ) {
2555 sfw.SetFace ( myFace );
2556 sfw.SetPrecision ( Precision() );
2558 // pdn: shift pcurves in the seam to make OK shape w/o fixshifted
2560 for ( i=1; i <= wires.Length(); i++ ) {
2561 if(wires(i).IsVertex())
2563 Handle(ShapeExtend_WireData) sbwd = wires(i).WireData();
2565 for(Standard_Integer jL=1; jL <= sbwd->NbEdges(); jL++ ) {
2566 TopoDS_Edge E = sbwd->Edge(jL);
2567 if ( E.Orientation() == TopAbs_REVERSED && BRep_Tool::IsClosed(E,myFace) ) {
2568 Standard_Real f1,l1, f2, l2;
2569 Handle(Geom2d_Curve) c21 = BRep_Tool::CurveOnSurface(E,myFace,f1,l1);
2570 TopoDS_Shape dummy = E.Reversed();
2571 Handle(Geom2d_Curve) c22 = BRep_Tool::CurveOnSurface(TopoDS::Edge(dummy),myFace,f2,l2);
2572 Standard_Real dPreci = ::Precision::PConfusion()*Precision::PConfusion();
2573 gp_Pnt2d pf1 = c21->Value(f1);
2574 gp_Pnt2d pl1 = c21->Value(l1);
2575 gp_Pnt2d pf2 = c22->Value(f2);
2576 gp_Pnt2d pl2 = c22->Value(l2);
2577 if ( c21 == c22 || pf1.SquareDistance(pf2) < dPreci ||
2578 pl1.SquareDistance(pl2) < dPreci ) {
2579 gp_Vec2d shift(0.,0.);
2580 if ( myUClosed && Abs ( pf2.X() - pl2.X() ) < ::Precision::PConfusion() )
2581 shift.SetX(myUPeriod);
2582 if ( myVClosed && Abs ( pf2.Y() - pl2.Y() ) < ::Precision::PConfusion() )
2583 shift.SetY(myVPeriod);
2584 c22->Translate(shift);
2590 for ( i=1; i <= wires.Length(); i++ ) {
2591 if(wires(i).IsVertex())
2593 Handle(ShapeExtend_WireData) sbwd = wires(i).WireData();
2595 //: abv 30.08.01: torHalf2.sat: if wire contains single degenerated
2596 // edge, skip that wire
2597 if ( sbwd->NbEdges() <=0 ||
2598 ( sbwd->NbEdges() ==1 && BRep_Tool::Degenerated(sbwd->Edge(1)) ) ) {
2606 // force recomputation of degenerated edges (clear pcurves)
2607 ShapeBuild_Edge sbe;
2608 for (Standard_Integer jL=1; jL <= sbwd->NbEdges(); jL++ ) {
2609 if ( BRep_Tool::Degenerated(sbwd->Edge(jL)) )
2610 sbe.RemovePCurve(sbwd->Edge(jL),myFace);
2611 // sfw.FixDegenerated(jL);
2613 sfw.FixDegenerated();
2617 // Compute center points for wires
2618 TColgp_SequenceOfPnt2d mPnts;
2619 Standard_Integer nb = wires.Length();
2621 // pdn protection on empty sequence
2625 Standard_Integer i; //svv #1
2626 for ( i = 1; i <= nb; i++ )
2627 mPnts.Append ( GetMiddlePoint ( wires(i), myFace ) );
2629 // Put each wire on its own surface patch (by reassigning pcurves)
2630 // and build 3d curve if necessary
2631 ShapeBuild_ReShape rs;
2632 ShapeBuild_Edge sbe;
2633 ShapeAnalysis_Edge sae;
2634 Handle(ShapeFix_Edge) sfe = new ShapeFix_Edge;
2636 Standard_Real U1,U2,V1,V2;
2637 myGrid->Bounds(U1,U2,V1,V2);
2638 for ( i = 1; i <= nb; i++ ) {
2639 gp_Pnt2d pnt = mPnts(i);
2640 Standard_Real ush =0., vsh=0.;
2642 ush = ShapeAnalysis::AdjustToPeriod(pnt.X(),U1,U2);
2643 pnt.SetX(pnt.X()+ush);
2646 vsh = ShapeAnalysis::AdjustToPeriod(pnt.Y(),V1,V2);
2647 pnt.SetY(pnt.Y()+vsh);
2650 Standard_Integer indU = myGrid->LocateUParameter ( pnt.X() );
2651 Standard_Integer indV = myGrid->LocateVParameter ( pnt.Y() );
2653 // compute parametric transformation
2655 Standard_Real uFact=1.;
2656 Standard_Boolean needT = myGrid->GlobalToLocalTransformation ( indU, indV, uFact, T );
2657 if ( ush != 0. || vsh != 0. ) {
2659 Sh.SetTranslation ( gp_Vec2d ( ush, vsh ) );
2661 needT = Standard_True;
2663 if(wires(i).IsVertex())
2665 Handle(Geom_Surface) surf = myGrid->Patch ( indU, indV );
2667 B.MakeFace ( face, surf, myLoc, ::Precision::Confusion() );
2668 Handle(ShapeExtend_WireData) sewd = wires(i).WireData();
2669 for ( Standard_Integer j = 1; j <= sewd->NbEdges(); j++ ) {
2670 // Standard_Integer nsplit = ApplyContext ( sewd, j, context );
2671 // if ( nsplit <1 ) { j--; continue; }
2673 TopoDS_Edge edge = sewd->Edge(j);
2675 // !! Accurately copy pcurves for SEAMS and SEAM-like edges !!
2677 // if edge is already copied, don`t copy any more
2678 TopoDS_Edge newEdge;
2679 TopoDS_Edge anInitEdge = edge;
2680 Standard_Boolean ismanifold = (edge.Orientation() == TopAbs_FORWARD ||
2681 edge.Orientation() == TopAbs_REVERSED);
2682 if ( rs.IsRecorded ( edge ) ) {
2684 TopoDS_Shape tmpNE = rs.Value(edge);
2685 newEdge = TopoDS::Edge ( tmpNE );
2689 anInitEdge.Orientation(TopAbs_FORWARD);
2691 newEdge = sbe.Copy ( anInitEdge, Standard_False );
2693 newEdge.Orientation(edge.Orientation());
2694 rs.Replace ( edge, newEdge );
2695 Context()->Replace ( edge, newEdge );
2698 sbe.ReassignPCurve ( newEdge, myFace, face );
2700 // transform pcurve to parametric space of patch
2703 Handle(Geom2d_Curve) c2d;
2704 if ( sae.PCurve ( newEdge, face, c2d, f, l, Standard_False ) ) {
2705 Standard_Real newf = f, newl = l;
2706 Handle(Geom2d_Curve) c2dnew = sbe.TransformPCurve ( c2d, T, uFact, newf, newl );
2707 if ( BRep_Tool::IsClosed ( newEdge, face ) ) {
2708 Standard_Real cf, cl;
2709 Handle(Geom2d_Curve) c2d2;
2711 TopoDS_Shape tmpE = newEdge.Reversed();
2712 TopoDS_Edge e2 = TopoDS::Edge (tmpE );
2713 if ( sae.PCurve ( e2, face, c2d2, cf, cl, Standard_False ) ) {
2714 if ( newEdge.Orientation() == TopAbs_FORWARD )
2715 B.UpdateEdge ( newEdge, c2dnew, c2d2, face, 0. );
2716 else B.UpdateEdge ( newEdge, c2d2, c2dnew, face, 0. );
2718 else B.UpdateEdge ( newEdge, c2dnew, face, 0. );
2720 else B.UpdateEdge ( newEdge, c2dnew, face, 0. );
2721 B.Range ( newEdge, face, newf, newl );
2722 if ( (newf != f || newl != l) && !BRep_Tool::Degenerated(newEdge) )
2723 B.SameRange ( newEdge, Standard_False );
2727 if(!BRep_Tool::SameRange(newEdge)) {
2730 TopoDS_Edge afe = TopoDS::Edge(newEdge.Oriented(TopAbs_FORWARD));
2731 etmp = sbe.Copy (afe , Standard_False );
2734 etmp = sbe.Copy ( newEdge, Standard_False );
2735 sfe->FixAddCurve3d ( etmp );
2736 Standard_Real cf, cl;
2737 Handle(Geom_Curve) c3d;
2738 if(sae.Curve3d(etmp,c3d,cf,cl,Standard_False)) {
2739 B.UpdateEdge ( newEdge, c3d, 0. );
2740 sbe.SetRange3d ( newEdge, cf, cl );
2744 sfe->FixAddCurve3d ( newEdge );
2745 sewd->Set ( newEdge, j );
2749 // Collect wires in packets lying on same surface and dispatch them
2750 TColStd_Array1OfBoolean used ( 1, nb );
2751 used.Init ( Standard_False );
2753 TopTools_SequenceOfShape loops;
2755 Handle(Geom_Surface) Surf;
2756 for ( i = 1; i <= nb; i++ ) {
2757 if ( used(i) ) continue;
2758 Handle(Geom_Surface) S = myGrid->Patch ( mPnts(i) );
2759 if ( Surf.IsNull() ) Surf = S;
2760 else if ( S != Surf ) continue;
2761 used(i) = Standard_True;
2762 ShapeFix_WireSegment aSeg = wires(i);
2763 if(aSeg.IsVertex()) {
2764 TopoDS_Vertex aVert = aSeg.GetVertex();
2765 if(aVert.Orientation() == TopAbs_INTERNAL)
2766 loops.Append(wires(i).GetVertex());
2769 Handle(ShapeExtend_WireData) aWD = aSeg.WireData();
2771 loops.Append ( aWD->Wire() );
2774 if ( Surf.IsNull() ) break;
2776 MakeFacesOnPatch ( faces, Surf, loops );
2780 //======================================================================
2781 //function : SetTransferParamTool
2783 //=======================================================================
2785 void ShapeFix_ComposeShell::SetTransferParamTool(const Handle(ShapeAnalysis_TransferParameters)& TransferParam)
2787 myTransferParamTool = TransferParam;
2790 //=======================================================================
2791 //function : GetTransferParamTool
2793 //=======================================================================
2795 Handle(ShapeAnalysis_TransferParameters) ShapeFix_ComposeShell::GetTransferParamTool() const
2797 return myTransferParamTool;
2800 //=======================================================================
2801 //function : ClosedMode
2803 //=======================================================================
2805 Standard_Boolean &ShapeFix_ComposeShell::ClosedMode()
2807 return myClosedMode;