1 // Created on: 1999-04-27
2 // Created by: Andrey BETENEV
3 // Copyright (c) 1999-1999 Matra Datavision
4 // Copyright (c) 1999-2012 OPEN CASCADE SAS
6 // The content of this file is subject to the Open CASCADE Technology Public
7 // License Version 6.5 (the "License"). You may not use the content of this file
8 // except in compliance with the License. Please obtain a copy of the License
9 // at http://www.opencascade.org and read it completely before using this file.
11 // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
12 // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
14 // The Original Code and all software distributed under the License is
15 // distributed on an "AS IS" basis, without warranty of any kind, and the
16 // Initial Developer hereby disclaims all such warranties, including without
17 // limitation, any warranties of merchantability, fitness for a particular
18 // purpose or non-infringement. Please see the License for the specific terms
19 // and conditions governing the rights and limitations under the License.
21 // pdn 01.06.99 S4205: handling not-SameRange edges
22 // abv 22.07.99 implementing patch indices
23 // svv 10.01.00 porting on DEC
25 #include <ShapeFix_ComposeShell.ixx>
27 #include <Precision.hxx>
28 #include <gp_Pnt2d.hxx>
29 #include <gp_Lin2d.hxx>
30 #include <gp_Dir2d.hxx>
32 #include <TColStd_Array1OfInteger.hxx>
33 #include <TColStd_Array1OfBoolean.hxx>
34 #include <TColStd_Array1OfReal.hxx>
35 #include <TColStd_HArray1OfReal.hxx>
36 #include <TColgp_SequenceOfPnt2d.hxx>
37 #include <TColStd_SequenceOfReal.hxx>
39 #include <IntRes2d_IntersectionSegment.hxx>
40 #include <IntRes2d_IntersectionPoint.hxx>
41 #include <IntRes2d_Domain.hxx>
43 #include <Geom2dInt_GInter.hxx>
44 #include <Geom_Curve.hxx>
45 #include <Geom2d_Line.hxx>
46 #include <Geom2dAdaptor_Curve.hxx>
47 #include <GeomAdaptor_Surface.hxx>
50 #include <TopoDS_Vertex.hxx>
51 #include <TopoDS_Edge.hxx>
52 #include <TopoDS_Wire.hxx>
53 #include <TopoDS_Shell.hxx>
54 #include <TopoDS_Iterator.hxx>
55 #include <TopTools_MapOfShape.hxx>
56 #include <TopTools_DataMapOfShapeListOfShape.hxx>
58 #include <BRepTools.hxx>
59 #include <Bnd_Box2d.hxx>
60 #include <BndLib_Add2dCurve.hxx>
61 #include <BRepTopAdaptor_FClass2d.hxx>
62 #include <BRep_Tool.hxx>
63 #include <BRep_Builder.hxx>
65 #include <ShapeExtend.hxx>
66 #include <ShapeExtend_WireData.hxx>
67 #include <ShapeBuild_Vertex.hxx>
68 #include <ShapeBuild_Edge.hxx>
69 #include <ShapeAnalysis.hxx>
70 #include <ShapeAnalysis_Edge.hxx>
71 #include <ShapeAnalysis_WireOrder.hxx>
72 #include <ShapeFix_Wire.hxx>
73 #include <ShapeFix_Edge.hxx>
74 #include <ShapeFix_WireSegment.hxx>
75 #include <ShapeAnalysis_Curve.hxx>
76 #include <ShapeBuild_ReShape.hxx>
77 #include <ShapeAnalysis_TransferParametersProj.hxx>
78 #include <ShapeFix_Face.hxx>
79 #include <ShapeAnalysis_Surface.hxx>
81 #include <Extrema_ExtPC2d.hxx>
82 #include <ShapeAnalysis.hxx>
84 //=======================================================================
85 //function : ShapeFix_ComposeShell
87 //=======================================================================
89 ShapeFix_ComposeShell::ShapeFix_ComposeShell () :
90 myStatus(0), myClosedMode(Standard_False)
92 myTransferParamTool = new ShapeAnalysis_TransferParametersProj;
96 //=======================================================================
99 //=======================================================================
101 void ShapeFix_ComposeShell::Init (const Handle(ShapeExtend_CompositeSurface) &Grid,
102 const TopLoc_Location& L,
103 const TopoDS_Face &Face,
104 const Standard_Real Prec)
107 myUClosed = myGrid->IsUClosed();
108 myVClosed = myGrid->IsVClosed();
109 myUPeriod = myGrid->UJointValue(myGrid->NbUPatches()+1) - myGrid->UJointValue(1);
110 myVPeriod = myGrid->VJointValue(myGrid->NbVPatches()+1) - myGrid->VJointValue(1);
112 // DTK-CKY 100531 : protection against very thin face
113 // Test "isclosed" should be filtered on the overall (non trimmed) surface, must be closed
114 Handle(Geom_Surface) theSurface = BRep_Tool::Surface(Face,myLoc);
115 Standard_Real U0,U1,V0,V1;
116 theSurface->Bounds(U0,U1,V0,V1);
118 gp_Pnt P0 = theSurface->Value(U0,(V0+V1)/2.);
119 gp_Pnt P1 = theSurface->Value(U1,(V0+V1)/2.);
120 if (P0.Distance(P1) > Precision::Confusion()*10)
121 myUClosed = Standard_False;
124 gp_Pnt P0 = theSurface->Value((U0+U1)/2.,V0);
125 gp_Pnt P1 = theSurface->Value((U0+U1)/2.,V1);
126 if (P0.Distance(P1) > Precision::Confusion()*10)
127 myVClosed = Standard_False;
129 // DTK-CKY 100531 end
133 TopoDS_Shape tmpF = Face.Oriented ( TopAbs_FORWARD );
134 myFace = TopoDS::Face ( tmpF ); // for correct dealing with seams
135 myOrient = Face.Orientation();
137 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_OK );
139 // Compute resolution (checking in 2d is necessary for splitting
140 // degenerated edges and avoiding NotClosed)
141 myUResolution = myVResolution = RealLast();
142 for ( Standard_Integer i=1; i <= myGrid->NbUPatches(); i++ ) {
143 Standard_Real uRange = myGrid->UJointValue(i+1)-myGrid->UJointValue(i);
144 for ( Standard_Integer j=1; j <= myGrid->NbVPatches(); j++ ) {
145 Standard_Real vRange = myGrid->VJointValue(j+1)-myGrid->VJointValue(j);
146 Standard_Real u1,u2,v1,v2;
147 myGrid->Patch(i,j)->Bounds(u1,u2,v1,v2);
148 GeomAdaptor_Surface GAS ( myGrid->Patch(i,j) );
149 Standard_Real ures = GAS.UResolution ( 1. )*uRange/(u2-u1);
150 Standard_Real vres = GAS.VResolution ( 1. )*vRange/(v2-v1);
151 if ( ures >0. && myUResolution > ures ) myUResolution = ures;
152 if ( vres >0. && myVResolution > vres ) myVResolution = vres;
155 if ( myUResolution == RealLast() ) myUResolution = ::Precision::Parametric ( 1. );
156 if ( myVResolution == RealLast() ) myVResolution = ::Precision::Parametric ( 1. );
160 //=======================================================================
163 //=======================================================================
165 Standard_Boolean ShapeFix_ComposeShell::Perform ()
167 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_OK );
168 myInvertEdgeStatus = Standard_False;
170 ShapeFix_SequenceOfWireSegment seqw; // working data: wire segments
172 // Init seqw by initial set of wires (with corresponding orientation)
174 if(seqw.Length() == 0) {
175 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_FAIL6 );
176 return Standard_False;
179 // Split edges in the wires by grid and add internal segments of grid (parts of cutting lines)
180 SplitByGrid ( seqw );
182 // Split all the wires into segments by common vertices (intersections)
185 // Then, collect resulting wires
186 ShapeFix_SequenceOfWireSegment wires; // resulting wires
187 CollectWires ( wires, seqw );
189 // And construct resulting faces
190 TopTools_SequenceOfShape faces;
191 DispatchWires ( faces, wires );
193 // Finally, construct resulting shell
194 if ( faces.Length() !=1 ) {
198 for ( Standard_Integer i=1; i <= faces.Length(); i++ )
199 B.Add ( S, faces(i) );
202 else myResult = faces(1);
203 myResult.Orientation ( myOrient );
205 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE1 );
206 return Standard_True;
210 //=======================================================================
211 //function : SplitEdges
213 //=======================================================================
215 void ShapeFix_ComposeShell::SplitEdges ()
217 myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_OK );
219 ShapeFix_SequenceOfWireSegment seqw; // working data: wire segments
221 // Init seqw by initial set of wires (with corresponding orientation)
224 // Split edges in the wires by grid and add internal segments of grid (parts of cutting lines)
225 SplitByGrid ( seqw );
229 //=======================================================================
232 //=======================================================================
234 const TopoDS_Shape& ShapeFix_ComposeShell::Result () const
240 //=======================================================================
243 //=======================================================================
245 Standard_Boolean ShapeFix_ComposeShell::Status (const ShapeExtend_Status status) const
247 return ShapeExtend::DecodeStatus ( myStatus, status );
251 //=======================================================================
252 // PRIVATE (working) METHODS
253 //=======================================================================
255 #define TOLINT 1.e-10 // precision for intersection
257 // Local definitions: characteristics of intersection point
259 #define IOR_UNDEF 0 // undefined side
260 #define IOR_LEFT 1 // to left side of cutting line
261 #define IOR_RIGHT 2 // to right side of cutting line
262 #define IOR_BOTH 3 // crossing
263 #define IOR_POS 4 // in case of cycle on full period, whether first point is right
265 #define ITP_INTER 8 // crossing
266 #define ITP_BEGSEG 16 // start of tangential segment
267 #define ITP_ENDSEG 32 // stop of tangential segment
268 #define ITP_TANG 64 // tangential point
271 //=======================================================================
272 //function : PointLineDeviation
274 //=======================================================================
275 // Return (signed) deviation of point from line
276 static Standard_Real PointLineDeviation (const gp_Pnt2d &p, const gp_Lin2d &line)
278 gp_Dir2d dir = line.Direction();
279 gp_Dir2d n ( -dir.Y(), dir.X() );
280 return n.XY() * ( p.XY() - line.Location().XY() );
284 //=======================================================================
285 //function : PointLinePosition
287 //=======================================================================
288 // Define position of point relative to line
289 static Standard_Integer PointLinePosition (const gp_Pnt2d &p, const gp_Lin2d &line,
292 dev = PointLineDeviation ( p, line );
293 return ( dev > TOLINT ? IOR_LEFT : ( dev < -TOLINT ? IOR_RIGHT : IOR_UNDEF ) );
297 //=======================================================================
298 //function : PointLinePosition
300 //=======================================================================
301 // Define position of point relative to line
302 static Standard_Integer PointLinePosition (const gp_Pnt2d &p, const gp_Lin2d &line)
305 return PointLinePosition ( p, line, dev );
309 //=======================================================================
310 //function : ParamPointsOnLine
312 //=======================================================================
313 // Compute parameter of point on line
314 static inline Standard_Real ParamPointOnLine (const gp_Pnt2d &p, const gp_Lin2d &line)
316 return line.Direction().XY() * ( p.XY() - line.Location().XY() );
320 //=======================================================================
321 //function : ParamPointsOnLine
323 //=======================================================================
324 // Compute parameter of two points on line (as intersection of segment)
325 static Standard_Real ParamPointsOnLine (const gp_Pnt2d &p1, const gp_Pnt2d &p2,
326 const gp_Lin2d &line)
328 Standard_Real dist1 = PointLineDeviation ( p1, line );
329 Standard_Real dist2 = PointLineDeviation ( p2, line );
330 // in most cases, one of points is on line
331 if ( Abs ( dist1 ) < ::Precision::PConfusion() ) {
332 if ( Abs ( dist2 ) < ::Precision::PConfusion() )
333 return 0.5 * ( ParamPointOnLine ( p1, line ) + ParamPointOnLine ( p2, line ) );
334 return ParamPointOnLine ( p1, line );
336 if ( Abs ( dist2 ) < ::Precision::PConfusion() )
337 return ParamPointOnLine ( p2, line );
339 if ( dist2 * dist1 >0 )
340 return 0.5 * ( ParamPointOnLine ( p1, line ) + ParamPointOnLine ( p2, line ) );
341 // else compute intersection
342 return ( ParamPointOnLine ( p1, line ) * dist2 -
343 ParamPointOnLine ( p2, line ) * dist1 ) / ( dist2 - dist1 );
347 //=======================================================================
348 //function : ProjectPointOnLine
350 //=======================================================================
351 // Compute projection of point on line
352 static inline gp_Pnt2d ProjectPointOnLine (const gp_Pnt2d &p, const gp_Lin2d &line)
354 return line.Location().XY() + line.Direction().XY() * ParamPointOnLine ( p, line );
358 //=======================================================================
359 //function : ApplyContext
361 //=======================================================================
362 // Apply context to one edge in the wire and put result into this wire
363 static Standard_Integer ApplyContext (ShapeFix_WireSegment &wire,
364 const Standard_Integer iedge,
365 const Handle(ShapeBuild_ReShape) &context)
367 TopoDS_Edge edge = wire.Edge ( iedge );
368 TopoDS_Shape res = context->Apply ( edge );
370 if ( res.IsSame ( edge ) ) return 1;
372 if ( res.ShapeType() == TopAbs_EDGE ) {
373 wire.SetEdge ( iedge, TopoDS::Edge ( res ) );
377 Standard_Integer index = iedge;
379 Handle(ShapeExtend_WireData) segw = new ShapeExtend_WireData;
380 segw->ManifoldMode() = Standard_False;
381 for ( TopoDS_Iterator it(res); it.More(); it.Next() ) {
382 TopoDS_Edge E = TopoDS::Edge ( it.Value() );
383 if ( ! E.IsNull() ) segw->Add ( E );
385 else cout << "Error: ShapeFix_ComposeShell, ApplyContext: wrong mapping of edge" << endl;
389 // add edges into the wire in correct order
390 if ( segw->NbEdges() >0 ) {
391 Standard_Integer ind, iumin, iumax, ivmin, ivmax;
392 wire.GetPatchIndex ( iedge, iumin, iumax, ivmin, ivmax );
393 Standard_Integer nbEdges = segw->NbEdges();
394 for ( Standard_Integer i=1; i <= nbEdges; i++, index++ ) {
395 ind = ( edge.Orientation() == TopAbs_FORWARD || edge.Orientation() == TopAbs_INTERNAL ? i : segw->NbEdges()-i+1 );
396 TopoDS_Edge aE = segw->Edge ( ind );
397 if ( i==1 ) wire.SetEdge ( index, aE );
398 else wire.AddEdge ( index, aE, iumin, iumax, ivmin, ivmax );
402 else cout << "Warning: ShapeFix_ComposeShell, ApplyContext: edge is to remove - not implemented" << endl;
405 return index - iedge;
409 //=======================================================================
410 //function : IsCoincided
412 //=======================================================================
413 // check points coincidence
414 static inline Standard_Integer IsCoincided (const gp_Pnt2d &p1, const gp_Pnt2d &p2,
415 const Standard_Real UResolution,
416 const Standard_Real VResolution,
417 const Standard_Real tol)
419 //pdn Maximal accuracy is working precision of intersector.
420 Standard_Real UTolerance = UResolution * tol;
421 Standard_Real VTolerance = VResolution * tol;
422 return Abs ( p1.X() - p2.X() ) <= Max(TOLINT,UTolerance) &&
423 Abs ( p1.Y() - p2.Y() ) <= Max(TOLINT,VTolerance);
427 //=======================================================================
428 //function : GetPatchIndex
430 //=======================================================================
431 // computes index for the patch by given parameter Param
432 static Standard_Integer GetPatchIndex (const Standard_Real Param,
433 const Handle(TColStd_HArray1OfReal) &Params,
434 const Standard_Boolean isClosed)
436 Standard_Integer NP = Params->Upper();
437 Standard_Real period = Params->Value(NP) - Params->Value(1);
438 Standard_Real shift = 0;
440 shift = ShapeAnalysis::AdjustToPeriod ( Param, Params->Value(1), Params->Value(NP) );
441 Standard_Real p = Param + shift;
443 // locate patch: the same algo as in SE_CS::LocateParameter()
444 Standard_Integer i; // svv #1
445 for ( i = 2; i < NP; i++ ) {
446 // Standard_Real par = Params->Value(i);
447 if ( p < Params->Value(i) ) break;
451 Standard_Real ish = shift / period;
452 Standard_Integer ishift = (Standard_Integer)( ish <0 ? ish - 0.5 : ish + 0.5 );
453 return i - ishift * ( NP - 1 );
457 //=======================================================================
458 //function : LoadWires
460 //=======================================================================
462 void ShapeFix_ComposeShell::LoadWires (ShapeFix_SequenceOfWireSegment &seqw) const
466 // Init seqw by initial set of wires (with corresponding orientation)
467 for ( TopoDS_Iterator iw(myFace,Standard_False); iw.More(); iw.Next() ) {
469 TopoDS_Shape tmpW = Context()->Apply ( iw.Value() ) ;
470 if(tmpW.ShapeType() != TopAbs_WIRE) {
471 if(tmpW.ShapeType() == TopAbs_VERTEX) {
472 ShapeFix_WireSegment seg; //(( isOuter ? TopAbs_REVERSED : TopAbs_FORWARD ) );
473 seg.SetVertex(TopoDS::Vertex(tmpW));
474 seg.Orientation(tmpW.Orientation());
479 TopoDS_Wire wire = TopoDS::Wire ( tmpW );
481 Standard_Boolean isNonManifold = ( wire.Orientation() != TopAbs_REVERSED &&
482 wire.Orientation() != TopAbs_FORWARD );
486 // protect against INTERNAL/EXTERNAL wires
487 // if ( wire.Orientation() != TopAbs_REVERSED &&
488 // wire.Orientation() != TopAbs_FORWARD ) continue;
490 // determine orientation of the wire
491 // TopoDS_Face face = TopoDS::Face ( myFace.EmptyCopied() );
492 // B.Add ( face, wire );
493 // Standard_Boolean isOuter = ShapeAnalysis::IsOuterBound ( face );
497 Handle(ShapeExtend_WireData) sbwd = new ShapeExtend_WireData ( wire ,Standard_True,Standard_False);
498 //pdn protection againts of wires w/o edges
499 Standard_Integer nbEdges = sbwd->NbEdges();
502 //wire segments for non-manifold topology should have INTERNAL orientation
503 ShapeFix_WireSegment seg ( sbwd, TopAbs_INTERNAL);
508 //splitting wires containing manifold and non-manifold parts on a separate
511 Handle(ShapeExtend_WireData) sbwdM = new ShapeExtend_WireData();
512 Handle(ShapeExtend_WireData) sbwdNM = new ShapeExtend_WireData();
513 sbwdNM->ManifoldMode() = Standard_False;
514 TopoDS_Iterator aIt(wire);
515 for( ; aIt.More(); aIt.Next()) {
516 TopoDS_Edge E = TopoDS::Edge ( aIt.Value() );
517 if(E.Orientation() == TopAbs_FORWARD || E.Orientation() == TopAbs_REVERSED)
522 Standard_Integer nbMEdges = sbwdM->NbEdges();
523 Standard_Integer nbNMEdges = sbwdNM->NbEdges();
525 ShapeFix_WireSegment seg ( sbwdNM, TopAbs_INTERNAL); //(( isOuter ? TopAbs_REVERSED : TopAbs_FORWARD ) );
529 // Orientation is set so as to allow the segment to be traversed in only one direction
531 Handle(ShapeFix_Wire) sfw = new ShapeFix_Wire;
533 Standard_Integer stat=0;
534 Handle(Geom_Surface) gs = BRep_Tool::Surface(myFace);
535 if( gs->IsUPeriodic() && gs->IsVPeriodic() ) {
536 // For torus-like shapes, first reorder in 2d since reorder is indifferent in 3d
537 ShapeAnalysis_WireOrder sawo(Standard_False, 0);
538 ShapeAnalysis_Edge sae;
539 for(Standard_Integer i = 1; i <= nbMEdges; i++) {
541 Handle(Geom2d_Curve) c2d;
543 TopoDS_Shape tmpF = myFace.Oriented(TopAbs_FORWARD);
544 if(!sae.PCurve(sbwdM->Edge(i),TopoDS::Face(tmpF),c2d,f,l))
546 sawo.Add(c2d->Value(f).XY(),c2d->Value(l).XY());
549 stat = (sawo.Status() < 0 ? -1 : 1);
550 sfw->FixReorder(sawo);
554 if (sfw->StatusReorder(ShapeExtend_DONE3))
559 TopoDS_Shape dummy = myFace.EmptyCopied();
560 TopoDS_Face face = TopoDS::Face ( dummy );
561 B.Add ( face, wire );
562 Standard_Boolean isOuter = ShapeAnalysis::IsOuterBound ( face );
563 TopoDS_Wire w = sbwdM->Wire();
564 dummy = myFace.EmptyCopied();
565 face = TopoDS::Face ( dummy );
567 Standard_Boolean isOuterAfter = ShapeAnalysis::IsOuterBound ( face );
568 if(isOuter!=isOuterAfter)
569 sbwdM->Reverse(face);
572 ShapeFix_WireSegment seg ( sbwdM, TopAbs_REVERSED ); //(( isOuter ? TopAbs_REVERSED : TopAbs_FORWARD ) );
581 //=======================================================================
582 //function : ComputeCode
583 //purpose : compute code for wire segment between two intersections (by deviation)
584 //=======================================================================
586 Standard_Integer ShapeFix_ComposeShell::ComputeCode (const Handle(ShapeExtend_WireData) &wire,
587 const gp_Lin2d &line,
588 const Standard_Integer begInd,
589 const Standard_Integer endInd,
590 const Standard_Real begPar,
591 const Standard_Real endPar,
592 const Standard_Boolean isInternal)
594 Standard_Integer code = IOR_UNDEF;
596 ShapeAnalysis_Edge sae;
597 const Standard_Integer NPOINTS = 5; // number of points for measuring deviation
599 // track special closed case: segment starts at end of edge and ends at its beginning
600 Standard_Integer special = ( begInd == endInd &&
601 ( wire->Edge(begInd).Orientation() == TopAbs_FORWARD ||
602 wire->Edge(begInd).Orientation() == TopAbs_INTERNAL) ==
603 ( begPar > endPar ) ? 1 : 0);
604 if ( ! special && begInd == endInd && begPar == endPar &&
605 (myClosedMode || isInternal))
608 // for tracking cases in closed mode
609 Standard_Boolean begin=Standard_True;
610 Standard_Real shift=0;
613 // check if segment is tangency
614 // Segment is considered as tangency if deviation of pcurve from line
615 // (in 2d) measured by NPOINTS points is less than tolerance of edge
616 // (recomputed to 2d using Resolution).
618 Standard_Integer nb = wire->NbEdges();
620 Standard_Integer i; // svv #1
621 for ( i=begInd; ; i++ ) {
623 TopoDS_Edge edge = wire->Edge ( i );;
625 Handle(Geom2d_Curve) c2d;
627 if ( ! sae.PCurve ( edge, myFace, c2d, f, l, Standard_False ) ) {
628 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL3 );
631 Standard_Real tol = LimitTolerance(BRep_Tool::Tolerance ( edge ));
632 Standard_Boolean isreversed = ( edge.Orientation() == TopAbs_REVERSED );
634 Standard_Real par1 = ( i == begInd && special >=0 ? begPar : ( isreversed ? l : f ) );
635 Standard_Real par2 = ( i == endInd && special <=0 ? endPar : ( isreversed ? f : l ) );
636 Standard_Real dpar = ( par2 - par1 ) / ( NPOINTS - 1 );
637 Standard_Integer np = ( Abs ( dpar ) < ::Precision::PConfusion() ? 1 : NPOINTS );
638 Standard_Integer j; // svv #1
639 for ( j=0; j < np; j++ ) {
640 Standard_Real par = par1 + dpar * j;
641 gp_Pnt2d p2d = c2d->Value ( par );
642 if ( myClosedMode ) {
643 if ( myUClosed && Abs ( line.Direction().X() ) < ::Precision::PConfusion() ) {
644 if ( begin ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.X(), line.Location().X(), myUPeriod );
645 else if ( ! j ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.X()-p2d0.X(), 0., myUPeriod );
646 p2d.SetX ( p2d.X() + shift );
648 if ( myVClosed && Abs ( line.Direction().Y() ) < ::Precision::PConfusion() ) {
649 if ( begin ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.Y(), line.Location().Y(), myVPeriod );
650 else if ( ! j ) shift = ShapeAnalysis::AdjustByPeriod ( p2d.Y()-p2d0.Y(), 0., myVPeriod );
651 p2d.SetY ( p2d.Y() + shift );
653 begin = Standard_False;
656 Standard_Integer pos = PointLinePosition ( p2d, line );
657 if ( pos == IOR_UNDEF ) continue;
659 // analyse the deviation
660 gp_Pnt2d p2dl = ProjectPointOnLine ( p2d, line );
661 if(!IsCoincided ( p2d, p2dl, myUResolution, myVResolution, tol )) {
662 if(!myClosedMode) { code = pos; break; }
668 if ( j < np ) { i = 0; break; } // not tangency
670 if ( special <=0 ) break;
674 if ( myClosedMode ) {
675 if ( code != IOR_UNDEF && ! begin ) {
676 // in closed mode, if segment is of 2*pi length, it is BOTH
677 Standard_Real dev = PointLineDeviation ( p2d0, line );
678 if ( myUClosed && Abs ( line.Direction().X() ) < ::Precision::PConfusion() ) {
679 if ( Abs ( Abs ( dev ) - myUPeriod ) < 0.1 * myUPeriod ) {
681 if ( dev >0 ) code |= IOR_POS;
683 else if(code==IOR_BOTH)
686 if ( myVClosed && Abs ( line.Direction().Y() ) < ::Precision::PConfusion() ) {
687 if ( Abs ( Abs ( dev ) - myVPeriod ) < 0.1 * myVPeriod ) {
689 if ( dev >0 ) code |= IOR_POS;
691 else if(code==IOR_BOTH)
697 if ( i ) code = IOR_UNDEF; // tangency
698 else if ( code == IOR_BOTH ) { // parity error in intersector
700 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
702 cout << "Warning: ShapeFix_ComposeShell::ComputeCode: lost intersection point" << cout;
709 //=======================================================================
710 //function : DistributeSplitPoints
712 //=======================================================================
713 // After applying context to (seam) edge, distribute its indices on new edges,
714 // according to their parameters on that edge
715 static void DistributeSplitPoints (const Handle(ShapeExtend_WireData) &sbwd,
716 const TopoDS_Face myFace,
717 const Standard_Integer index,
718 const Standard_Integer nsplit,
719 TColStd_SequenceOfInteger& indexes,
720 const TColStd_SequenceOfReal& values)
722 Standard_Boolean isreversed = ( nsplit >0 && sbwd->Edge(index).Orientation() == TopAbs_REVERSED );
724 TColStd_Array1OfReal params(0,nsplit);
725 Standard_Integer i; // svv #1
726 for ( i=0; i < nsplit; i++ ) {
728 BRep_Tool::Range ( sbwd->Edge(index+i), myFace, f, l );
729 params.SetValue ( i, ( isreversed ? l : f ) );
732 for ( i=1; i <= indexes.Length() && indexes(i) < index; i++ );
733 for ( Standard_Integer shift = 1; i <= indexes.Length() && indexes(i) == index; i++ ) {
734 while ( shift < nsplit && isreversed != (Standard_Boolean) ( values(i) > params(shift) ) ) shift++;
735 indexes.SetValue ( i, index + shift - 1 );
737 for ( ; i <= indexes.Length(); i++ )
738 indexes.SetValue ( i, indexes(i) + nsplit - 1 );
742 //=======================================================================
743 //function : CheckByCurve3d
745 //=======================================================================
746 static Standard_Integer CheckByCurve3d (const gp_Pnt &pos,
747 const Handle(Geom_Curve) &c3d,
748 const Standard_Real param,
750 const Standard_Real tol)
752 if ( c3d.IsNull() ) return Standard_True;
753 gp_Pnt p = c3d->Value(param);
754 if ( T.Form() != gp_Identity ) p.Transform ( T );
755 return pos.SquareDistance ( p ) <= tol * tol;
759 //=======================================================================
760 //function : DefinePatch
762 //=======================================================================
763 static void DefinePatch (ShapeFix_WireSegment &wire, const Standard_Integer code,
764 const Standard_Boolean isCutByU, const Standard_Integer cutIndex,
765 const Standard_Integer number = -1)
767 Standard_Integer nb = (number > 0 ? number : wire.NbEdges());
769 if ( ! ( code & IOR_LEFT ) ) wire.DefineIUMin ( nb, cutIndex );
770 if ( ! ( code & IOR_RIGHT ) ) wire.DefineIUMax ( nb, cutIndex );
773 if ( ! ( code & IOR_RIGHT ) ) wire.DefineIVMin ( nb, cutIndex );
774 if ( ! ( code & IOR_LEFT ) ) wire.DefineIVMax ( nb, cutIndex );
779 //=======================================================================
780 //function : DefinePatchForWire
782 //=======================================================================
783 static void DefinePatchForWire(ShapeFix_WireSegment &wire, const Standard_Integer code,
784 const Standard_Boolean isCutByU, const Standard_Integer cutIndex)
786 for(Standard_Integer i = 1; i <= wire.NbEdges(); i++)
787 DefinePatch(wire,code,isCutByU,cutIndex,i);
791 //=======================================================================
792 //function : GetGridResolution
794 //=======================================================================
795 static Standard_Real GetGridResolution(const Handle(TColStd_HArray1OfReal) SplitValues,
796 const Standard_Integer cutIndex)
798 Standard_Integer nb = SplitValues->Length();
799 Standard_Real leftLen = (cutIndex > 1 ? SplitValues->Value(cutIndex) - SplitValues->Value(cutIndex-1) :
800 SplitValues->Value(nb) -SplitValues->Value(nb-1));
801 Standard_Real rigthLen =(cutIndex < nb ? SplitValues->Value(cutIndex+1)-SplitValues->Value(cutIndex) :
802 SplitValues->Value(2) - SplitValues->Value(1));
803 return Min(leftLen,rigthLen)/3.;
807 //=======================================================================
808 //function : SplitWire
810 //=======================================================================
812 ShapeFix_WireSegment ShapeFix_ComposeShell::SplitWire (ShapeFix_WireSegment &wire,
813 TColStd_SequenceOfInteger& indexes,
814 const TColStd_SequenceOfReal& values,
815 TopTools_SequenceOfShape& vertices,
816 const TColStd_SequenceOfInteger &SegmentCodes,
817 const Standard_Boolean isCutByU,
818 const Standard_Integer cutIndex)
821 ShapeFix_WireSegment result;
822 Handle(ShapeAnalysis_Surface) aSurfTool =
823 new ShapeAnalysis_Surface ( BRep_Tool::Surface (myFace) );
824 Standard_Integer nbSplits = indexes.Length();
825 ShapeAnalysis_Edge sae;
826 Standard_Integer start = 1;
827 TopAbs_Orientation anWireOrient = wire.Orientation();
829 if ( ! myLoc.IsIdentity() ) T = myLoc.Inverted().Transformation();
831 // Processing edge by edge (assuming that split points are sorted along the wire)
832 for ( Standard_Integer i = 1; i <= wire.NbEdges(); i++ ) {
834 // for already splitted seam edge, redistribute its splitting points
835 Standard_Integer nsplit = ApplyContext ( wire, i, Context() );
837 DistributeSplitPoints ( wire.WireData(), myFace, i, nsplit, indexes, values );
840 cout << "Error: ShapeFix_ComposeShell::SplitWire: edge dismissed" << endl;
846 TopoDS_Edge edge = wire.Edge(i);
848 Standard_Integer iumin, iumax, ivmin, ivmax;
849 wire.GetPatchIndex ( i, iumin, iumax, ivmin, ivmax );
851 // Position code for first segment of edge
852 Standard_Integer code = SegmentCodes ( start >1 ? start-1 : SegmentCodes.Length() );
854 // Defining split parameters on edge
855 Standard_Integer stop = start;
856 while ( stop <= nbSplits && indexes(stop) == i ) stop++;
857 if ( stop == start ) {
858 result.AddEdge ( 0, edge, iumin, iumax, ivmin, ivmax );
859 if(code!=0 || wire.Orientation()!=TopAbs_EXTERNAL) // pdn 0 code handling for extertnal wires
860 DefinePatch ( result, code, isCutByU, cutIndex );
863 //find non-manifold vertices on edge
864 TopTools_SequenceOfShape aNMVertices;
865 TopoDS_Iterator aIt(edge,Standard_False);
866 for( ; aIt.More(); aIt.Next()) {
867 if(aIt.Value().Orientation() != TopAbs_FORWARD &&
868 aIt.Value().Orientation() != TopAbs_REVERSED)
869 aNMVertices.Append(aIt.Value());
872 // Collect data on edge
873 Standard_Real tolEdge = BRep_Tool::Tolerance(edge);
874 Standard_Real tol = LimitTolerance( tolEdge );
875 TopoDS_Vertex prevV = sae.FirstVertex(edge);
876 TopoDS_Vertex lastV = sae.LastVertex(edge);
877 Standard_Real prevVTol = LimitTolerance( BRep_Tool::Tolerance(prevV) );
878 Standard_Real lastVTol = LimitTolerance( BRep_Tool::Tolerance(lastV) );
879 gp_Pnt prevVPnt = BRep_Tool::Pnt(prevV);
880 gp_Pnt lastVPnt = BRep_Tool::Pnt(lastV);
881 if ( T.Form() != gp_Identity ) {
882 prevVPnt.Transform ( T );
883 lastVPnt.Transform ( T );
886 Handle(Geom_Curve) c3d;
887 Standard_Real f3d, l3d;
888 if ( ! sae.Curve3d ( edge, c3d, f3d, l3d ) ) { // not a crime
893 Standard_Real firstPar, lastPar;
894 Handle(Geom2d_Curve) C2d;
895 if ( ! sae.PCurve ( edge, myFace, C2d, firstPar, lastPar ) ) {
896 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
898 //finding sequence of non-manifold parameters
899 Standard_Integer nbNMVert = aNMVertices.Length();
900 TColStd_SequenceOfReal aNMVertParams;
902 Geom2dAdaptor_Curve adc(C2d);
904 Standard_Integer n =1;
905 for( ; n<= nbNMVert; n++) {
906 gp_Pnt apV = BRep_Tool::Pnt(TopoDS::Vertex(aNMVertices.Value(n)));
907 Standard_Real apar =firstPar;
908 Standard_Real adist2 =RealLast();
911 ShapeAnalysis_Curve asae;
912 adist2 = asae.Project(c3d,apV,Precision::Confusion(),aPproj,apar);
917 gp_Pnt2d aP2d = aSurfTool->ValueOfUV(apV,Precision::Confusion());
918 Extrema_ExtPC2d aExtr(aP2d,adc);
919 if(aExtr.IsDone() && aExtr.NbExt()) {
920 adist2 = aExtr.SquareDistance(1);
921 Standard_Integer index =1;
922 Standard_Integer k =2;
923 for( ; k <= aExtr.NbExt();k++) {
924 Standard_Real ad2 = aExtr.SquareDistance(k);
930 apar = aExtr.Point(index).Parameter();
934 aNMVertParams.Append(apar);
938 //pdn Claculating parametric shift
939 Standard_Boolean sp = (f3d == firstPar && l3d == lastPar);
940 Standard_Real span2d = lastPar - firstPar;
941 // Standard_Real ln2d = lastPar-prevPar;
942 // Standard_Real ln3d = l3d - f3d;
943 // Standard_Real fact = ln2d/ln3d;
944 // Standard_Real shift = prevPar - f3d*fact;
945 Standard_Real prevPar = firstPar;
946 gp_Pnt2d prevPnt2d = C2d->Value(prevPar);
947 gp_Pnt2d lastPnt2d = C2d->Value(lastPar);
948 gp_Pnt prevPnt = myGrid->Value ( prevPnt2d );
949 gp_Pnt lastPnt = myGrid->Value ( lastPnt2d );
950 Standard_Boolean isPeriodic = C2d->IsPeriodic();
951 Standard_Real aPeriod = (isPeriodic ? C2d->Period() :0.);
954 Standard_Integer NbEdgesStart = result.NbEdges();
955 Standard_Boolean splitted = Standard_False;
956 Standard_Real currPar=lastPar; //SK
957 for ( Standard_Integer j = start; j <= stop; prevPar = currPar, j++ ) {
958 if ( ! splitted && j >= stop ) { // no splitting at all
959 // code = SegmentCodes ( j >1 ? j-1 : SegmentCodes.Length() ); // classification code
962 currPar = ( j < stop ? values.Value(j) : lastPar );
964 //fix for case when pcurve is periodic and first parameter of edge is more than 2P
965 //method ShapeBuild_Edge::CopyRanges shift pcurve to range 0-2P and parameters of cutting
966 //should be shifted too. gka SAMTECH 28.07.06
968 if (currPar > (Max(lastPar,firstPar) +Precision::PConfusion()) ||
969 currPar < (Min(firstPar,lastPar)- Precision::PConfusion())) {
970 Standard_Real aShift = ShapeAnalysis::AdjustByPeriod(currPar, (firstPar+lastPar)*0.5,aPeriod);
978 // Try to adjust current splitting point to previous or end of edge
979 Standard_Boolean doCut = Standard_True;
981 if ( Abs ( currPar - lastPar ) < ::Precision::PConfusion() ) {
983 doCut = Standard_False;
985 else if ( Abs ( currPar - prevPar ) < ::Precision::PConfusion() ) {
986 vertices.Append ( prevV );
987 code = SegmentCodes ( j ); // classification code - update for next segment
988 continue; // no splitting at this point, go to next one
991 currPnt2d = C2d->Value(currPar);
992 currPnt = myGrid->Value ( currPnt2d );
993 if ( currPnt.Distance ( lastVPnt ) <= lastVTol &&
994 lastPnt.Distance ( currPnt ) <= tol &&
995 CheckByCurve3d ( lastVPnt, c3d, f3d+(currPar-firstPar)*(l3d-f3d)/span2d,
997 lastPnt.Distance ( myGrid->Value ( C2d->Value(0.5*(currPar+lastPar)) ) ) <= tol ) {
999 Standard_Real uRes = myUResolution;
1000 Standard_Real vRes = myVResolution;
1002 Standard_Real gridRes = GetGridResolution(myGrid->UJointValues(),cutIndex)/tol;
1003 uRes = Min(myUResolution,gridRes);
1006 Standard_Real gridRes = GetGridResolution(myGrid->VJointValues(),cutIndex)/tol;
1007 vRes = Min(myVResolution,gridRes);
1009 if ( IsCoincided ( lastPnt2d, currPnt2d, uRes, vRes, tol ) &&
1010 IsCoincided ( lastPnt2d, C2d->Value(0.5*(currPar+lastPar)),
1011 uRes, vRes, tol ) ) doCut = Standard_False;
1013 else if ( currPnt.Distance ( prevVPnt ) <= prevVTol &&
1014 prevPnt.Distance ( currPnt ) <= tol &&
1015 CheckByCurve3d ( prevVPnt, c3d, f3d+(currPar-firstPar)*(l3d-f3d)/span2d,
1017 prevPnt.Distance ( myGrid->Value ( C2d->Value(0.5*(currPar+prevPar)) ) ) <= tol ) {
1019 Standard_Real uRes = myUResolution;
1020 Standard_Real vRes = myVResolution;
1022 Standard_Real gridRes = GetGridResolution(myGrid->UJointValues(),cutIndex)/tol;
1023 uRes = Min(myUResolution,gridRes);
1026 Standard_Real gridRes = GetGridResolution(myGrid->VJointValues(),cutIndex)/tol;
1027 vRes = Min(myVResolution,gridRes);
1029 if ( IsCoincided ( prevPnt2d, currPnt2d, uRes, vRes, tol ) &&
1030 IsCoincided ( prevPnt2d, C2d->Value(0.5*(currPar+prevPar)),
1031 uRes, vRes, tol ) ) {
1032 vertices.Append ( prevV );
1033 code = SegmentCodes ( j ); // classification code - update for next segment
1034 continue; // no splitting at this point, go to next one
1037 //:abv 28.05.02: OCC320 Sample_2: if maxtol = 1e-7, the vertex tolerance
1038 // is actually ignored - protect against new vertex on degenerated edge
1039 else if ( BRep_Tool::Degenerated(edge) && prevV.IsSame(lastV) ) {
1043 // classification code for current segment
1044 if ( j > start ) code = SegmentCodes ( j >1 ? j-1 : SegmentCodes.Length() );
1046 // if not adjusted, make new vertex
1048 B.MakeVertex ( V, currPnt.Transformed(myLoc.Transformation()), tolEdge );
1049 vertices.Append ( V );
1051 // else adjusted to end, fill all resting vertices
1052 else if ( ! doCut ) {
1053 for ( ; j < stop; j++ ) vertices.Append ( lastV );
1054 if ( ! splitted ) break; // no splitting at all
1057 else vertices.Append ( V );
1059 // When edge is about to be splitted, copy end vertices to protect
1060 // original shape from increasing tolerance after fixing SameParameter
1063 TopoDS_Shape emptyCopiedfV = prevV.EmptyCopied();
1064 TopoDS_Vertex fV = TopoDS::Vertex (emptyCopiedfV );
1065 Context()->Replace ( prevV, fV );
1067 if ( prevV.IsSame ( lastV ) ) {
1069 TopoDS_Shape tmpV = fV.Oriented ( lastV.Orientation() ) ;
1070 lV = TopoDS::Vertex (tmpV);
1074 TopoDS_Shape emptyCopied = lastV.EmptyCopied();
1075 lV = TopoDS::Vertex (emptyCopied);
1076 Context()->Replace ( lastV, lV );
1078 if ( V.IsSame ( lastV ) ) V = lV;
1079 else if ( V.IsSame ( prevV ) ) V = fV;
1084 // Splitting of the edge
1085 splitted = Standard_True;
1086 prevV.Orientation ( TopAbs_FORWARD );
1087 V.Orientation ( TopAbs_REVERSED );
1088 ShapeBuild_Edge sbe;
1089 TopoDS_Edge anInitEdge = edge;
1090 Standard_Boolean ismanifold = (edge.Orientation() == TopAbs_FORWARD ||
1091 edge.Orientation() == TopAbs_REVERSED);
1093 anInitEdge.Orientation(TopAbs_FORWARD);
1094 TopoDS_Edge newEdge = sbe.CopyReplaceVertices (anInitEdge, prevV, V );
1097 //addition internal vertices if they exists on edge
1098 Standard_Integer n =1;
1099 for( ; n <= aNMVertParams.Length(); n++) {
1100 Standard_Real apar = aNMVertParams.Value(n);
1101 TopoDS_Vertex aNMVert =TopoDS::Vertex(aNMVertices.Value(n));
1102 TopoDS_Vertex atmpV = TopoDS::Vertex(Context()->Apply(aNMVert));
1103 if(fabs(apar - prevPar) <= Precision::PConfusion()) {
1104 Context()->Replace(atmpV,prevV);
1105 aNMVertParams.Remove(n);
1106 aNMVertices.Remove(n);
1109 else if(fabs(apar - currPar) <= Precision::PConfusion()) {
1110 Context()->Replace(atmpV,V);
1111 aNMVertParams.Remove(n);
1112 aNMVertices.Remove(n);
1115 if(apar > prevPar && apar < currPar) {
1116 B.Add(newEdge,atmpV);
1117 aNMVertParams.Remove(n);
1118 aNMVertices.Remove(n);
1124 sbe.CopyPCurves ( newEdge, anInitEdge );
1127 Handle(ShapeAnalysis_TransferParameters) theTransferParamtool = GetTransferParamTool();
1128 theTransferParamtool->SetMaxTolerance(MaxTolerance());
1129 theTransferParamtool->Init(anInitEdge,myFace);
1130 theTransferParamtool->TransferRange(newEdge,prevPar,currPar,Standard_True);
1134 if(code == IOR_UNDEF) //tangential segment
1135 newEdge.Orientation(TopAbs_EXTERNAL);
1137 newEdge.Orientation(edge.Orientation());
1140 if(!sp && !BRep_Tool::Degenerated(newEdge))
1141 B.SameRange(newEdge, Standard_False);
1142 //pdn take into account 0 codes (if ext)
1143 if(code == 0 && wire.Orientation()==TopAbs_EXTERNAL){
1144 code = ( ( isCutByU == (Standard_Boolean)( j == 1 ) ) ? 1 : 2 );
1147 result.AddEdge ( 0, newEdge, iumin, iumax, ivmin, ivmax );
1148 DefinePatch ( result, code, isCutByU, cutIndex );
1150 // Changing prev parameters
1152 prevVTol = LimitTolerance( BRep_Tool::Tolerance ( V ) );
1153 prevVPnt = BRep_Tool::Pnt ( V );
1155 prevPnt2d = currPnt2d;
1160 // record replacement in context
1161 // NOTE: order of edges in the replacing wire corresponds to FORWARD orientation of the edge
1162 TopoDS_Wire resWire;
1163 B.MakeWire ( resWire );
1164 for ( Standard_Integer k=NbEdgesStart; k < result.NbEdges(); k++ ) {
1165 if ( edge.Orientation() == TopAbs_FORWARD || edge.Orientation() == TopAbs_INTERNAL)
1166 B.Add ( resWire, result.Edge(k+1) );
1167 else B.Add ( resWire, result.Edge(result.NbEdges()-k+NbEdgesStart) );
1169 Context()->Replace ( edge, resWire );
1172 if(anWireOrient == TopAbs_INTERNAL && code ==0) {
1173 ShapeBuild_Edge sbe;
1174 if(edge.Orientation() == TopAbs_INTERNAL)
1175 edge.Orientation(TopAbs_FORWARD);
1176 TopoDS_Edge e1 = sbe.Copy(edge,Standard_False);
1177 Handle(Geom2d_Curve) C2d2 = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
1178 B.UpdateEdge(e1,C2d,C2d2,myFace,0.);
1179 e1.Orientation(TopAbs_EXTERNAL);
1180 Context()->Replace ( edge,e1);
1181 result.AddEdge ( 0,e1 , iumin, iumax, ivmin, ivmax );
1184 result.AddEdge ( 0, edge, iumin, iumax, ivmin, ivmax );
1185 if(code == 0 && wire.Orientation()==TopAbs_EXTERNAL){
1186 //pdn defining code for intersection of two isos
1187 code = ( ( isCutByU == (Standard_Boolean)( Abs(firstPar-currPar) < Abs(lastPar-currPar) ) ) ? 2 : 1 );
1189 DefinePatch ( result, code, isCutByU, cutIndex );
1192 result.Orientation ( anWireOrient );
1197 //=======================================================================
1198 //function : SplitByLine
1200 //=======================================================================
1202 Standard_Boolean ShapeFix_ComposeShell::SplitByLine (ShapeFix_WireSegment &wire,
1203 const gp_Lin2d &line,
1204 const Standard_Boolean isCutByU,
1205 const Standard_Integer cutIndex,
1206 TColStd_SequenceOfReal &SplitLinePar,
1207 TColStd_SequenceOfInteger &SplitLineCode,
1208 TopTools_SequenceOfShape &SplitLineVertex)
1210 ShapeAnalysis_Edge sae;
1211 // prepare data on cutting line
1212 Handle(Geom2d_Line) jC2d = new Geom2d_Line ( line );
1213 Geom2dAdaptor_Curve jGAC(jC2d);
1215 TColStd_SequenceOfInteger IntEdgeInd; // index of intersecting edge
1216 TColStd_SequenceOfReal IntEdgePar; // parameter of intersection point on edge
1217 TColStd_SequenceOfReal IntLinePar; // parameter of intersection point on line
1219 Standard_Boolean isnonmanifold = (wire.Orientation() == TopAbs_INTERNAL);
1220 //gka correction for non-manifold vertices SAMTECH
1221 if(wire.IsVertex()) {
1222 Handle(ShapeAnalysis_Surface) aSurfTool = new ShapeAnalysis_Surface ( BRep_Tool::Surface (myFace) );
1223 TopoDS_Vertex aVert = wire.GetVertex();
1224 gp_Pnt aP3d = BRep_Tool::Pnt(aVert);
1225 gp_Pnt2d aP2d = aSurfTool->ValueOfUV(aP3d,Precision::Confusion());
1226 Standard_Real dev =0.;
1227 Standard_Integer code = PointLinePosition(aP2d,line,dev);
1228 if(code != IOR_UNDEF)
1229 return Standard_False;
1230 Standard_Real par = ParamPointOnLine (aP2d,line);
1231 SplitLinePar.Append ( par );
1232 //splitting codes for non-manifold topology should be tangential
1233 SplitLineCode.Append (ITP_TANG); //ITP_INTER);
1234 TopoDS_Vertex aVertNew;
1236 aB.MakeVertex(aVertNew,aP3d,BRep_Tool::Tolerance(aVert));
1237 aVertNew.Orientation(TopAbs_FORWARD);
1238 Context()->Replace(aVert,aVertNew);
1239 SplitLineVertex.Append (aVertNew);
1240 wire.SetVertex(aVertNew);
1241 return Standard_True;
1243 const Handle(ShapeExtend_WireData) sewd = wire.WireData();
1245 Standard_Integer nbe = sewd->NbEdges();
1247 //:abv 31.10.01: for closed mode
1248 Standard_Integer closedDir = 0;
1249 if ( myClosedMode ) {
1250 if ( myUClosed && Abs ( line.Direction().X() ) < ::Precision::PConfusion() )
1252 else if ( myVClosed && Abs ( line.Direction().Y() ) < ::Precision::PConfusion() )
1255 Standard_Real halfPeriod = 0.5 * ( closedDir ? closedDir <0 ? myUPeriod : myVPeriod : 0. );
1257 //============================================
1258 // make intersections and collect all data on intersection points
1259 Standard_Integer firstCode=0, prevCode=0;
1260 gp_Pnt2d firstPos, prevPos;
1261 Standard_Real firstDev=0., prevDev=0.;
1262 for (Standard_Integer iedge = 1; iedge <= nbe; iedge++) {
1264 TopoDS_Edge E= sewd->Edge ( iedge );
1265 Standard_Boolean isreversed = ( E.Orientation() == TopAbs_REVERSED );
1268 Handle(Geom2d_Curve) c2d;
1269 if ( ! sae.PCurve ( E, myFace, c2d, f, l, Standard_False ) ) continue;
1272 gp_Pnt2d posf = c2d->Value(f), posl = c2d->Value(l);
1273 gp_XY pppf = posf.XY(), pppl = posl.XY();
1275 // In case of ClosedMode, adjust curve and end points to period on closed surface
1276 //:abv 16.10.01: Ziegler_CADDY01.sat -18: if pcurve is longer than period,
1277 // ensure processing of all intersections
1278 Standard_Integer nbIter = 1;
1279 gp_Vec2d shiftNext(0.,0.);
1280 if ( myClosedMode ) {
1282 // get bounding box of pcurve
1283 ShapeAnalysis_Curve sac;
1285 sac.FillBndBox ( c2d, f, l, 11, Standard_True, box );
1286 Standard_Real umin, vmin, umax, vmax;
1287 box.Get ( umin, vmin, umax, vmax );
1289 // compute shifts and adjust points adjust
1290 if ( closedDir < 0 ) {
1291 Standard_Real x = line.Location().X();
1292 Standard_Real shift = ShapeAnalysis::AdjustToPeriod ( umin, x-myUPeriod, x );
1293 if ( shift != 0. ) {
1294 c2d = Handle(Geom2d_Curve)::DownCast ( c2d->Copy() );
1295 gp_Vec2d V ( shift, 0. );
1296 c2d->Translate ( V );
1297 pppf.SetX ( pppf.X() + shift );
1298 pppl.SetX ( pppl.X() + shift );
1300 shiftNext.SetX ( -myUPeriod );
1301 nbIter = (Standard_Integer)( 1 + Abs ( umax + shift - x ) / myUPeriod );
1302 shift = ShapeAnalysis::AdjustByPeriod ( posf.X(), x, myUPeriod );
1303 posf.SetX ( posf.X() + shift );
1304 shift = ShapeAnalysis::AdjustByPeriod ( posl.X(), x, myUPeriod );
1305 posl.SetX ( posl.X() + shift );
1307 else if ( closedDir > 0 ) {
1308 Standard_Real y = line.Location().Y();
1309 Standard_Real shift = ShapeAnalysis::AdjustToPeriod ( vmin, y-myVPeriod, y );
1310 if ( shift != 0. ) {
1311 c2d = Handle(Geom2d_Curve)::DownCast ( c2d->Copy() );
1312 gp_Vec2d V ( 0., shift );
1313 c2d->Translate ( V );
1314 pppf.SetY ( pppf.Y() + shift );
1315 pppl.SetY ( pppl.Y() + shift );
1317 shiftNext.SetY ( -myVPeriod );
1318 nbIter = (Standard_Integer)( 1 + Abs ( umax + shift - y ) / myVPeriod );
1319 shift = ShapeAnalysis::AdjustByPeriod ( posf.Y(), y, myVPeriod );
1320 posf.SetY ( posf.Y() + shift );
1321 shift = ShapeAnalysis::AdjustByPeriod ( posl.Y(), y, myVPeriod );
1322 posl.SetY ( posl.Y() + shift );
1326 // detect intersections at junction of two edges
1327 gp_Pnt2d pos = ( isreversed ? posl : posf );
1329 Standard_Integer code = PointLinePosition ( pos, line, dev );
1330 if ( iedge ==1 ) { firstCode = code; firstPos = pos; firstDev = dev; }
1331 else if ( code == IOR_UNDEF || code != prevCode ) {
1332 if ( ! closedDir || Abs ( dev - prevDev ) < halfPeriod ) {
1333 IntLinePar.Append ( ParamPointsOnLine ( pos, prevPos, line ) ); // !! - maybe compute exactly ?
1334 IntEdgePar.Append ( isreversed ? l : f );
1335 IntEdgeInd.Append ( iedge );
1339 // fill data on end point (for next edge)
1340 pos = ( isreversed ? posf : posl );
1341 prevCode = PointLinePosition ( pos, line, prevDev );
1344 // cycle with shift in order to track all possible intersections
1345 for ( Standard_Integer iter=1; iter <= nbIter; iter++ ) {
1347 // data for intersection
1348 IntRes2d_Domain iDom ( pppf, f, TOLINT, pppl, l, TOLINT );
1349 Geom2dAdaptor_Curve iGAC(c2d);
1352 Geom2dInt_GInter Inter;
1353 Inter.Perform ( jGAC, /*jDom,*/ iGAC, iDom, TOLINT, TOLINT );
1355 // Fill arrays with new intersection points
1356 if ( Inter.IsDone() ) {
1359 for ( i = 1; i <= Inter.NbPoints(); i++ ) {
1360 IntRes2d_IntersectionPoint IP = Inter.Point (i);
1361 IntLinePar.Append ( IP.ParamOnFirst() );
1362 IntEdgePar.Append ( IP.ParamOnSecond() );
1364 for ( i = 1; i <= Inter.NbSegments(); i++ ) {
1365 IntRes2d_IntersectionSegment IS = Inter.Segment (i);
1366 if ( IS.HasFirstPoint() ) {
1367 IntRes2d_IntersectionPoint IP = IS.FirstPoint();
1368 IntLinePar.Append ( IP.ParamOnFirst() );
1369 IntEdgePar.Append ( IP.ParamOnSecond() );
1371 if ( IS.HasLastPoint() ) {
1372 IntRes2d_IntersectionPoint IP = IS.LastPoint();
1373 IntLinePar.Append ( IP.ParamOnFirst() );
1374 IntEdgePar.Append ( IP.ParamOnSecond() );
1379 if ( iter < nbIter ) {
1380 if ( iter == 1 ) c2d = Handle(Geom2d_Curve)::DownCast ( c2d->Copy() );
1381 pppf += shiftNext.XY();
1382 pppl += shiftNext.XY();
1383 c2d->Translate ( shiftNext );
1387 Standard_Integer start = IntEdgeInd.Length() + 1; // first of the new points
1389 // Move all points into range [f,l] (intersector sometimes gives params out of range)
1391 for ( i = start; i <= IntEdgePar.Length(); i++ ) {
1392 if ( IntEdgePar(i) < f ) IntEdgePar.SetValue ( i, f );
1393 else if ( IntEdgePar(i) > l ) IntEdgePar.SetValue ( i, l );
1396 // Sort by parameter on edge
1397 for ( i = IntEdgePar.Length(); i > start; i-- )
1398 for ( Standard_Integer j = start; j < i; j++ ) {
1399 if ( isreversed == (Standard_Boolean) ( IntEdgePar(j+1) < IntEdgePar(j) ) ) continue;
1400 IntLinePar.Exchange ( j, j+1 );
1401 IntEdgePar.Exchange ( j, j+1 );
1405 for ( i = start; i <= IntEdgePar.Length(); i++ )
1406 IntEdgeInd.Append ( iedge );
1408 // Detect intersection at closing point
1409 // Only wires which are not EXTERNAL are considered (as closed)
1410 if ( iedge == nbe && wire.Orientation() != TopAbs_EXTERNAL &&
1411 wire.Orientation() != TopAbs_INTERNAL &&
1412 ( prevCode == IOR_UNDEF || prevCode != firstCode ) ) {
1413 if ( ! closedDir || Abs ( firstDev - prevDev ) < halfPeriod ) {
1414 IntLinePar.Append ( ParamPointsOnLine ( pos, firstPos, line ) );
1415 IntEdgePar.Append ( isreversed ? f : l );
1416 IntEdgeInd.Append ( iedge );
1421 if ( IntEdgePar.Length() <1 ) {
1422 //pdn Defining position of wire. There is no intersection, so by any point.
1423 DefinePatchForWire ( wire, firstCode, isCutByU, cutIndex );
1424 return Standard_False; //pdn ??
1427 //======================================
1428 // Fill sequence of transition codes for intersection points
1429 TColStd_SequenceOfInteger IntCode; // parameter of intersection point on line
1430 TColStd_SequenceOfInteger SegmentCodes; // classification codes for segments of wire
1432 // remove duplicated points to ensure correct results of ComputeCode
1433 Standard_Integer i, j = IntEdgePar.Length();
1434 if ( myClosedMode && j >1 ) {
1435 for ( i = 1; i <= IntEdgePar.Length(); ) {
1436 if ( i == j ) break;
1437 if ( IntEdgeInd(i) == IntEdgeInd(j) &&
1438 Abs ( IntEdgePar(i) - IntEdgePar(j) ) < ::Precision::PConfusion() ) {
1439 IntLinePar.Remove(i);
1440 IntEdgePar.Remove(i);
1441 IntEdgeInd.Remove(i);
1445 else if ( nbe ==1 || IntEdgeInd(i) == (IntEdgeInd(j)%nbe)+1 ) {
1446 TopoDS_Edge E1 = sewd->Edge ( IntEdgeInd(j) );
1447 TopoDS_Edge E2 = sewd->Edge ( IntEdgeInd(i) );
1448 Standard_Real a1, b1, a2, b2;
1449 BRep_Tool::Range ( E1, myFace, a1, b1 );
1450 BRep_Tool::Range ( E2, myFace, a2, b2 );
1451 if ( Abs ( IntEdgePar(j) - ( E1.Orientation() == TopAbs_FORWARD ? b1 : a1 ) ) < ::Precision::PConfusion() &&
1452 Abs ( IntEdgePar(i) - ( E2.Orientation() == TopAbs_FORWARD ? a2 : b2 ) ) < ::Precision::PConfusion() ) {
1453 IntLinePar.Remove(i);
1454 IntEdgePar.Remove(i);
1455 IntEdgeInd.Remove(i);
1464 // Compute segment codes (left side of line, right or tangential)
1465 for ( i=1; i <= IntEdgePar.Length(); i++ ) {
1466 j = ( i < IntEdgePar.Length() ? i + 1 : 1 );
1467 Standard_Integer code = ComputeCode ( sewd, line, IntEdgeInd(i), IntEdgeInd(j),
1468 IntEdgePar(i), IntEdgePar(j),isnonmanifold );
1469 SegmentCodes.Append ( code );
1472 // for EXTERNAL wire, i.e. another joint line, every point is double intersection
1473 if ( wire.Orientation() == TopAbs_EXTERNAL ) {
1474 for ( i=1; i <= IntEdgePar.Length(); i++ )
1475 IntCode.Append ( ITP_TANG | IOR_BOTH );
1477 // For real (closed) wire, analyze tangencies
1479 if(wire.Orientation() != TopAbs_INTERNAL) {
1480 // Two consecutive tangential segments are considered as one, merge them.
1481 for ( i=1; i <= IntEdgePar.Length(); i++ ) {
1482 j = ( i > 1 ? i-1 : IntEdgePar.Length() );
1484 int k = ( i < IntEdgePar.Length() ? i + 1 : 1 ); // [ACIS22539]
1486 if ( SegmentCodes(j) == IOR_UNDEF &&
1487 SegmentCodes(i) == IOR_UNDEF ) {
1489 // Very specific case when the constructed seam edge
1490 // overlaps with spur edge [ACIS22539]
1491 if (myClosedMode && (IntLinePar(i) - IntLinePar(j)) * (IntLinePar(k) - IntLinePar(i)) <= 0. )
1494 IntEdgeInd.Remove(i);
1495 IntEdgePar.Remove(i);
1496 IntLinePar.Remove(i);
1497 SegmentCodes.Remove(i);
1502 //pdn exit if all split points removed
1503 if ( IntEdgePar.Length() <1 ) {
1504 //DefinePatchForWire ( wire, firstCode, isCutByU, cutIndex );
1505 return Standard_False; //pdn ??
1508 // Analyze type of intersection point and encode it
1509 // Three kinds of points (ITP): clear intersection, tangency in-point,
1510 // beginning and end of tangential segment.
1511 // Orientation (IOR) tells on which side of line edge crosses it
1512 j = IntEdgePar.Length();
1513 for ( i=1; i <= IntEdgePar.Length(); j = i++ ) {
1514 Standard_Integer codej = SegmentCodes(j);
1515 Standard_Integer codei = SegmentCodes(i);
1516 if ( myClosedMode ) {
1517 if ( ( codej & IOR_BOTH ) == IOR_BOTH ) //IOR_LEFT : IOR_RIGHT
1518 codej = ( codej & IOR_POS ? IOR_RIGHT : IOR_LEFT );
1519 if ( ( codei & IOR_BOTH ) == IOR_BOTH ) //IOR_RIGHT : IOR_LEFT
1520 codei = ( codei & IOR_POS ? IOR_LEFT : IOR_RIGHT );
1522 Standard_Integer ipcode = ( codej | codei );
1523 if ( codej == IOR_UNDEF ) { // previous segment was tangency
1524 if ( IntLinePar(i) > IntLinePar (j) )
1525 ipcode |= ITP_ENDSEG; // end of segment
1526 else ipcode |= ITP_BEGSEG; // beginning of segment
1528 else if ( codei == IOR_UNDEF ) { // current segment is tangency
1529 if ( IntLinePar ( i < IntLinePar.Length() ? i+1 : 1 ) > IntLinePar(i) )
1530 ipcode |= ITP_BEGSEG; // beginning of segment
1531 else ipcode |= ITP_ENDSEG; // end of segment
1533 //internal wire can be only tangent
1534 else if ( i == j ) ipcode |= ( ( ipcode & IOR_BOTH ) == IOR_BOTH && !isnonmanifold ? ITP_INTER : ITP_TANG );
1535 else if ( codei == codej || isnonmanifold) ipcode |= ITP_TANG; // tangency in-point
1536 else ipcode |= ITP_INTER; // standard crossing
1537 IntCode.Append ( ipcode );
1541 //=======================================
1542 // Split edges in the wire by intersection points and fill vertices array
1543 TopTools_SequenceOfShape IntVertices;
1544 wire = SplitWire ( wire, IntEdgeInd, IntEdgePar, IntVertices,
1545 SegmentCodes, isCutByU, cutIndex );
1547 // add all data to input arrays
1548 for ( i=1; i <= IntLinePar.Length(); i++ ) {
1549 SplitLinePar.Append ( IntLinePar(i) );
1550 SplitLineCode.Append ( IntCode(i) );
1551 SplitLineVertex.Append ( IntVertices(i) );
1554 return Standard_True;
1558 //=======================================================================
1559 //function : SplitByLine
1561 //=======================================================================
1563 void ShapeFix_ComposeShell::SplitByLine (ShapeFix_SequenceOfWireSegment &wires,
1564 const gp_Lin2d &line,
1565 const Standard_Boolean isCutByU,
1566 const Standard_Integer cutIndex)
1568 TColStd_SequenceOfReal SplitLinePar;
1569 TColStd_SequenceOfInteger SplitLineCode;
1570 TopTools_SequenceOfShape SplitLineVertex;
1572 // split wires one by one, collecting data on intersection points
1573 Standard_Integer i; // svv #1
1574 for ( i=1; i <= wires.Length(); i++ ) {
1575 SplitByLine ( wires(i), line, isCutByU, cutIndex,
1576 SplitLinePar, SplitLineCode, SplitLineVertex );
1579 // sort intersection points along parameter on cutting line
1580 for ( i = SplitLinePar.Length(); i >1; i-- )
1581 for ( Standard_Integer j=1; j < i; j++ ) {
1582 if ( SplitLinePar(j) > SplitLinePar(j+1) ) {
1583 SplitLinePar.Exchange ( j, j+1 );
1584 SplitLineCode.Exchange ( j, j+1 );
1585 SplitLineVertex.Exchange ( j, j+1 );
1589 // merge null-length tangential segments into one-point tangencies or intersections
1590 for ( i = 1; i < SplitLinePar.Length(); i++ ) {
1591 if ( Abs ( SplitLinePar(i+1) - SplitLinePar(i) ) > ::Precision::PConfusion() ) continue;
1592 if ( ( SplitLineCode(i) & ITP_ENDSEG &&
1593 SplitLineCode(i+1) & ITP_BEGSEG ) ||
1594 ( SplitLineCode(i) & ITP_BEGSEG &&
1595 SplitLineCode(i+1) & ITP_ENDSEG ) ) {
1596 Standard_Integer code = ( SplitLineCode(i) | SplitLineCode(i+1) ) & IOR_BOTH;
1597 SplitLineCode.SetValue ( i, code | ( code == IOR_BOTH ? ITP_INTER : ITP_TANG ) );
1598 SplitLinePar.Remove(i+1);
1599 SplitLineCode.Remove(i+1);
1600 SplitLineVertex.Remove(i+1);
1604 // go along line, split it by intersection points and create edges
1605 // (only for internal parts, in particular not for tangential segments)
1607 Standard_Integer parity = 0; // 0 - out, 1 - in
1608 Standard_Integer halfparity = 0; // left/right for tangential segments
1609 Standard_Integer tanglevel = 0; // tangency nesting level
1610 for ( i = 1; i <= SplitLinePar.Length(); i++ ) {
1611 Standard_Integer code = SplitLineCode(i);
1612 Standard_Boolean interior = ( ! tanglevel && parity % 2 ); // create an edge
1613 if ( code & ITP_INTER ) { // crossing
1616 else if ( code & ITP_BEGSEG ) { // beginning of tangential segment
1618 if ( ! halfparity ) halfparity = ( code & IOR_BOTH );
1619 else if ( halfparity != ( code & IOR_BOTH ) ) parity++;
1621 else if ( code & ITP_ENDSEG ) { // end of tangential segment
1623 if ( ! halfparity ) halfparity = ( code & IOR_BOTH );
1624 else if ( halfparity != ( code & IOR_BOTH ) ) parity++;
1626 if ( tanglevel <0 ) {
1627 // myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL4 );
1629 cout << "Warning: ShapeFix_ComposeShell::SplitByLine: tangency level <0 !" << endl;
1632 if ( ! interior ) continue;
1634 // apply context to vertices (to perform replacing/merging vertices)
1636 TopoDS_Shape tmpV1 = Context()->Apply ( SplitLineVertex(i-1) );
1637 TopoDS_Shape tmpV2 = Context()->Apply ( SplitLineVertex(i) );
1638 TopoDS_Vertex V1 = TopoDS::Vertex ( tmpV1 );
1639 TopoDS_Vertex V2 = TopoDS::Vertex ( tmpV2 );
1640 // protection against creating null-length edges
1641 if ( SplitLinePar(i) - SplitLinePar(i-1) < ::Precision::PConfusion() ) {
1644 cout << "Info: ShapeFix_ComposeShell::SplitByLine: Short segment ignored" << endl;
1646 if ( ! V1.IsSame ( V2 ) ) { // merge coincident vertices
1647 ShapeBuild_Vertex sbv;
1648 TopoDS_Vertex V = sbv.CombineVertex ( V1, V2 );
1649 Context()->Replace ( V1, V.Oriented ( V1.Orientation() ) );
1650 Context()->Replace ( V2, V.Oriented ( V2.Orientation() ) );
1653 cout << "Info: ShapeFix_ComposeShell::SplitByLine: Coincided vertices merged" << endl;
1659 // create an edge (without 3d curve), put it in wire segment and add to sequence
1660 // NOTE: i here is always >1
1662 B.MakeEdge ( edge );
1663 V1.Orientation ( TopAbs_FORWARD );
1664 V2.Orientation ( TopAbs_REVERSED );
1667 Handle(Geom2d_Line) Lin1 = new Geom2d_Line ( line );
1668 Handle(Geom2d_Line) Lin2 = new Geom2d_Line ( line );
1669 B.UpdateEdge ( edge, Lin1, Lin2, myFace, ::Precision::Confusion() );
1670 B.Range ( edge, myFace, SplitLinePar(i-1), SplitLinePar(i) );
1672 Handle(ShapeExtend_WireData) sbwd = new ShapeExtend_WireData;
1674 ShapeFix_WireSegment seg ( sbwd, TopAbs_EXTERNAL );
1676 // set patch indices
1677 DefinePatch ( seg, IOR_UNDEF, isCutByU, cutIndex );
1679 seg.DefineIUMin ( 1, GetPatchIndex ( SplitLinePar(i-1)+::Precision::PConfusion(),
1680 myGrid->UJointValues(), myUClosed ) );
1681 seg.DefineIUMax ( 1, GetPatchIndex ( SplitLinePar(i)-::Precision::PConfusion(),
1682 myGrid->UJointValues(), myUClosed ) + 1 );
1685 seg.DefineIVMin ( 1, GetPatchIndex ( SplitLinePar(i-1)+::Precision::PConfusion(),
1686 myGrid->VJointValues(), myVClosed ) );
1687 seg.DefineIVMax ( 1, GetPatchIndex ( SplitLinePar(i)-::Precision::PConfusion(),
1688 myGrid->VJointValues(), myVClosed ) + 1 );
1691 wires.Append ( seg );
1694 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL4 );
1696 cout << "Error: ShapeFix_ComposeShell::SplitByLine: parity error" << endl;
1700 // Apply context to all wires to perform all recorded replacements/merging
1701 for ( i=1; i <= wires.Length(); i++ ) {
1702 for ( Standard_Integer j=1; j <= wires(i).NbEdges(); )
1703 j += ApplyContext ( wires(i), j, Context() );
1708 //=======================================================================
1709 //function : SplitByGrid
1711 //=======================================================================
1713 void ShapeFix_ComposeShell::SplitByGrid (ShapeFix_SequenceOfWireSegment &seqw)
1715 // process splitting by U- anv V-seams (i.e. U=const and V=const curves)
1716 // closed composite surface is processed as periodic
1717 Standard_Real Uf,Ul,Vf,Vl;
1718 BRepTools::UVBounds(myFace,Uf,Ul,Vf,Vl);
1719 Standard_Real Umin,Umax,Vmin,Vmax;
1720 myGrid->Bounds(Umin,Umax,Vmin,Vmax);
1721 Standard_Real pprec = ::Precision::PConfusion();
1724 Standard_Integer i; // svv #1
1725 for ( i = ( myUClosed ? 1 : 2 ); i <= myGrid->NbUPatches(); i++ ) {
1726 gp_Pnt2d pos ( myGrid->UJointValue(i), 0. ); // 0. - for infinite ranges: myGrid->VJointValue(1) ;
1727 gp_Lin2d line ( pos, gp_Dir2d ( 0., 1. ) );
1728 if ( ! myClosedMode && myUClosed ) {
1729 Standard_Real period = Umax - Umin;
1730 Standard_Real X = pos.X();
1731 Standard_Real sh = ShapeAnalysis::AdjustToPeriod(X,Uf, Uf+period);
1732 for( ; X+sh <= Ul+pprec; sh += period ) {
1733 gp_Lin2d ln = line.Translated(gp_Vec2d(sh,0));
1734 Standard_Integer cutIndex = GetPatchIndex ( X+sh+pprec, myGrid->UJointValues(), myUClosed );
1735 SplitByLine ( seqw, ln, Standard_True, cutIndex );
1739 SplitByLine ( seqw, line, Standard_True, i );
1743 for ( i = ( myVClosed ? 1 : 2 ); i <= myGrid->NbVPatches(); i++ ) {
1744 gp_Pnt2d pos ( 0., myGrid->VJointValue(i) );
1745 gp_Lin2d line ( pos, gp_Dir2d ( 1., 0. ) );
1746 if ( ! myClosedMode && myVClosed ) {
1747 Standard_Real period = Vmax - Vmin;
1748 Standard_Real Y = pos.Y();
1749 Standard_Real sh = ShapeAnalysis::AdjustToPeriod(Y,Vf, Vf+period);
1750 for( ; Y+sh <= Vl+pprec; sh += period) {
1751 gp_Lin2d ln = line.Translated(gp_Vec2d(0,sh));
1752 Standard_Integer cutIndex = GetPatchIndex ( Y+sh+pprec, myGrid->VJointValues(), myVClosed );
1753 SplitByLine ( seqw, ln, Standard_False, cutIndex );
1757 SplitByLine ( seqw, line, Standard_False, i );
1760 // limit patch indices to be in range of grid (extended for periodic)
1761 Standard_Integer iumin = GetPatchIndex ( Uf+pprec, myGrid->UJointValues(), myUClosed );
1762 Standard_Integer iumax = GetPatchIndex ( Ul-pprec, myGrid->UJointValues(), myUClosed ) + 1;
1763 for ( i=1; i <= seqw.Length(); i++ ) {
1764 ShapeFix_WireSegment &wire = seqw(i);
1765 for ( Standard_Integer j=1; j <= wire.NbEdges(); j++ ) {
1766 wire.DefineIUMin ( j, iumin );
1767 wire.DefineIUMax ( j, iumax );
1770 Standard_Integer ivmin = GetPatchIndex ( Vf+pprec, myGrid->VJointValues(), myVClosed );
1771 Standard_Integer ivmax = GetPatchIndex ( Vl-pprec, myGrid->VJointValues(), myVClosed ) + 1;
1772 for ( i=1; i <= seqw.Length(); i++ ) {
1773 ShapeFix_WireSegment &wire = seqw(i);
1774 for ( Standard_Integer j=1; j <= wire.NbEdges(); j++ ) {
1775 wire.DefineIVMin ( j, ivmin );
1776 wire.DefineIVMax ( j, ivmax );
1782 //=======================================================================
1783 //function : BreakWires
1785 //=======================================================================
1787 void ShapeFix_ComposeShell::BreakWires (ShapeFix_SequenceOfWireSegment &seqw)
1790 // split all the wires by vertices
1791 TopTools_MapOfShape splitVertices;
1792 ShapeAnalysis_Edge sae;
1794 // first collect splitting vertices
1795 Standard_Integer i; // svv #1
1796 for ( i=1; i <= seqw.Length(); i++ ) {
1797 TopAbs_Orientation ori_wire = seqw(i).Orientation();
1798 if ( ori_wire != TopAbs_EXTERNAL &&
1799 ori_wire != TopAbs_INTERNAL) continue;
1801 Handle(ShapeExtend_WireData) sbwd = seqw(i).WireData();
1802 for ( Standard_Integer j=1; j <= sbwd->NbEdges(); j++ ) {
1803 TopoDS_Edge edge = sbwd->Edge ( j );
1804 TopAbs_Orientation ori_edge = (ori_wire == TopAbs_EXTERNAL ? ori_wire : edge.Orientation());
1805 if(ori_edge == TopAbs_EXTERNAL) {
1806 splitVertices.Add ( sae.FirstVertex ( edge ) );
1807 splitVertices.Add ( sae.LastVertex ( edge ) );
1812 // and then split each vire
1813 // Here each wire is supposed to be connected (while probably not closed)
1814 for ( i=1; i <= seqw.Length(); i++ ) {
1815 TopAbs_Orientation ori = seqw(i).Orientation();
1816 ShapeFix_WireSegment wire = seqw(i);
1819 Handle(ShapeExtend_WireData) sbwd = wire.WireData();
1821 // find first vertex for split
1822 Standard_Integer j; // svv #1
1823 for ( j=1; j <= sbwd->NbEdges(); j++ ) {
1824 TopoDS_Vertex V = sae.FirstVertex ( sbwd->Edge(j) );
1825 if ( splitVertices.Contains ( V ) ) break;
1827 if ( j > sbwd->NbEdges() ) continue; // splitting not needed
1829 // if first split of closed edge is not its start, make permutation
1830 Standard_Integer shift = 0;
1831 if ( j >1 && ! myClosedMode && wire.IsClosed() ) {
1832 TopoDS_Vertex V = sae.FirstVertex ( sbwd->Edge(1) );
1833 if ( ! splitVertices.Contains ( V ) )
1835 // wire.SetLast ( j-1 );
1838 // perform splitting
1839 Standard_Integer nbnew = 0;
1840 ShapeFix_WireSegment newwire;
1841 TopAbs_Orientation curOri = ori;
1842 for ( Standard_Integer ind=1; ind <= sbwd->NbEdges(); ind++ ) {
1843 j = 1 + ( ind - 1 + shift ) % sbwd->NbEdges();
1844 TopoDS_Edge edge = sbwd->Edge(j);
1845 TopoDS_Vertex V = sae.FirstVertex ( edge );
1846 if ( ind==1 || splitVertices.Contains ( V ) ) {
1847 if ( newwire.NbEdges() ) {
1848 newwire.Orientation ( curOri );
1849 // ShapeFix_WireSegment seg ( newwire, ori );
1850 seqw.InsertBefore ( i++, newwire );
1856 Standard_Integer iumin, iumax, ivmin, ivmax;
1857 wire.GetPatchIndex ( j, iumin, iumax, ivmin, ivmax );
1858 if(ori == TopAbs_INTERNAL && edge.Orientation() == TopAbs_EXTERNAL ) {
1859 curOri = TopAbs_EXTERNAL;
1860 edge.Orientation(TopAbs_FORWARD);
1864 newwire.AddEdge ( 0, edge, iumin, iumax, ivmin, ivmax );
1867 newwire.Orientation ( curOri );
1868 // ShapeFix_WireSegment seg ( newwire, ori );
1869 seqw.SetValue ( i, newwire );
1875 //=======================================================================
1876 //function : IsShortSegment
1877 //purpose : auxilary
1878 //=======================================================================
1879 // BUC60035 2053: check if wire segment is very short (in order not to skip it)
1881 // 1 - short even in 2d (to be taken always)
1882 // -1 - short in 3d but not in 2d (to be checked after algo and atteching to
1883 // another wire if alone)
1884 static Standard_Integer IsShortSegment (const ShapeFix_WireSegment &seg,
1885 const TopoDS_Face myFace,
1886 const Handle(Geom_Surface)& myGrid,
1887 const TopLoc_Location &myLoc,
1888 const Standard_Real UResolution,
1889 const Standard_Real VResolution)
1891 TopoDS_Vertex Vf = seg.FirstVertex();
1892 if ( ! Vf.IsSame ( seg.LastVertex() ) ) return Standard_False;
1894 gp_Pnt pnt = BRep_Tool::Pnt(Vf);
1895 Standard_Real tol = BRep_Tool::Tolerance(Vf);
1896 Standard_Real tol2 = tol*tol;
1898 Standard_Integer code = 1;
1899 ShapeAnalysis_Edge sae;
1900 Handle(ShapeExtend_WireData) sbwd = seg.WireData();
1901 for ( Standard_Integer i=1; i <= sbwd->NbEdges(); i++ ) {
1902 TopoDS_Edge edge = sbwd->Edge ( i );
1903 if ( ! Vf.IsSame ( sae.LastVertex ( edge ) ) ) return Standard_False;
1904 Handle(Geom2d_Curve) c2d;
1906 if ( ! sae.PCurve ( edge, myFace, c2d, f, l ) ) continue;
1909 gp_Pnt2d endPnt = c2d->Value(l);
1910 gp_Pnt2d midPnt = c2d->Value((f+l)/2);
1911 if ( ! IsCoincided ( endPnt, midPnt, UResolution, VResolution, tol ) ) code = -1;
1914 gp_Pnt midPnt3d = myGrid->Value(midPnt.X(),midPnt.Y());
1915 if ( ! myLoc.IsIdentity() ) midPnt3d.Transform ( myLoc.Transformation() );
1916 if ( midPnt3d.SquareDistance(pnt) > tol2) return 0;
1922 //=======================================================================
1923 //function : IsSamePatch
1924 //purpose : auxilary
1925 //=======================================================================
1926 static Standard_Boolean IsSamePatch (const ShapeFix_WireSegment wire,
1927 const Standard_Integer NU,
1928 const Standard_Integer NV,
1929 Standard_Integer &iumin,
1930 Standard_Integer &iumax,
1931 Standard_Integer &ivmin,
1932 Standard_Integer &ivmax,
1933 const Standard_Boolean extend=Standard_False)
1935 // get patch indices for current segment
1936 Standard_Integer jumin, jumax, jvmin, jvmax;
1937 wire.GetPatchIndex ( 1, jumin, jumax, jvmin, jvmax );
1939 // shift to the same period
1940 Standard_Integer du=0, dv=0;
1941 if ( jumin - iumin > NU ) du =-( jumin - iumin ) / NU;
1942 else if ( iumin - jumin > NU ) du = ( iumin - jumin ) / NU;
1943 if ( jvmin - ivmin > NV ) dv =-( jvmin - ivmin ) / NV;
1944 else if ( ivmin - jvmin > NV ) dv = ( ivmin - jvmin ) / NV;
1945 if ( du ) { jumin += du * NU; jumax += du * NU; }
1946 if ( dv ) { jvmin += dv * NV; jvmax += dv * NV; }
1948 // compute common (extended) indices
1949 Standard_Integer iun = Min ( iumin, jumin );
1950 Standard_Integer iux = Max ( iumax, jumax );
1951 Standard_Integer ivn = Min ( ivmin, jvmin );
1952 Standard_Integer ivx = Max ( ivmax, jvmax );
1953 Standard_Boolean ok = ( iun == iux || iun+1 == iux ) &&
1954 ( ivn == ivx || ivn+1 == ivx );
1955 if ( ok && extend ) { iumin = iun; iumax = iux; ivmin = ivn; ivmax = ivx; }
1960 //=======================================================================
1961 //function : CollectWires
1963 //=======================================================================
1965 void ShapeFix_ComposeShell::CollectWires (ShapeFix_SequenceOfWireSegment &wires,
1966 ShapeFix_SequenceOfWireSegment &seqw)
1969 ShapeAnalysis_Edge sae;
1970 Standard_Integer i; // svv #1
1971 // Collect information on short closed segments
1972 TColStd_Array1OfInteger shorts(1,seqw.Length());
1973 for ( i=1; i <= seqw.Length(); i++ ) {
1974 if(seqw(i).IsVertex() || seqw(i).Orientation() == TopAbs_INTERNAL) {
1975 wires.Append(seqw(i));
1981 for ( Standard_Integer k=1; ! myClosedMode && k <= seqw(i).NbEdges(); k++ )
1982 if ( ! seqw(i).CheckPatchIndex ( k ) ) {;} //break;
1983 // cout << "Warning: ShapeFix_ComposeShell::CollectWires: Wrong patch indices" << endl;
1985 Standard_Integer isshort = IsShortSegment ( seqw(i), myFace, myGrid, myLoc,
1986 myUResolution, myVResolution );
1987 shorts.SetValue ( i, isshort );
1989 ( seqw(i).Orientation() == TopAbs_EXTERNAL ||
1990 ( seqw(i).NbEdges() == 1 && //:abv 13.05.02: OCC320 - remove if degenerated
1991 BRep_Tool::Degenerated ( seqw(i).Edge(1) ) ) ) ) {
1993 cout << "Info: ShapeFix_ComposeShell::CollectWires: Short segment ignored" << endl;
1995 seqw(i).Orientation ( TopAbs_INTERNAL );
1999 Handle(ShapeExtend_WireData) sbwd;
2000 gp_Pnt2d endPnt, firstPnt;
2001 gp_Vec2d endTan, firstTan;
2002 TopoDS_Vertex firstV, endV;
2003 TopoDS_Edge firstEdge, lastEdge;
2004 Standard_Real tol = 0;
2005 Standard_Integer iumin = 0, iumax = 0, ivmin = 0, ivmax = 0;
2006 Standard_Real dsu=0., dsv=0.;
2007 Standard_Boolean canBeClosed = Standard_False;
2009 Standard_Integer index = 0;
2010 Standard_Boolean misoriented = Standard_True, samepatch = Standard_False;
2011 Standard_Boolean reverse = Standard_False, connected = Standard_False;
2012 Standard_Real angle = -M_PI, mindist = RealLast();
2013 Standard_Integer weigth = 0;
2014 Standard_Real shiftu=0., shiftv=0.;
2016 // find next segment to connect (or first if sbwd is NULL)
2017 for ( i = 1; i <= seqw.Length(); i++ ) {
2018 ShapeFix_WireSegment seg = seqw.Value(i);
2021 TopAbs_Orientation anOr = seg.Orientation();
2022 if ( anOr == TopAbs_INTERNAL ) continue;
2024 // for first segment, take any
2025 if ( sbwd.IsNull() ) {
2026 if ( shorts(i) >0 ) continue;
2027 if ( anOr == TopAbs_EXTERNAL ) continue;
2028 if ( anOr == TopAbs_FORWARD ) reverse = Standard_True;
2030 seg.GetPatchIndex ( 1, iumin, iumax, ivmin, ivmax );
2031 misoriented = Standard_False;
2036 // check whether current segment is on the same patch with previous
2037 Standard_Integer sp = ( myClosedMode || // no indexation in closed mode
2038 IsSamePatch ( seg, myGrid->NbUPatches(), myGrid->NbVPatches(),
2039 iumin, iumax, ivmin, ivmax ) );
2041 // not same patch has lowest priority
2042 if ( ! sp && ( canBeClosed || ( index && samepatch ) ) ) continue;
2044 // try to connect, with the following priorities:
2045 // The name of property Weigth:
2046 // sharing vertex auto
2049 // misorientation = 0 8
2050 // connected in 2d 4
2054 Handle(ShapeExtend_WireData) wire = seg.WireData();
2055 for ( Standard_Integer j=0; j <2; j++ ) {
2056 if ( ! endV.IsSame ( j ? seg.LastVertex() : seg.FirstVertex() ) ) continue;
2058 // check for misorientation only if nothing better is found
2059 Standard_Integer misor = ( anOr == ( j ? TopAbs_REVERSED : TopAbs_FORWARD ) );
2060 // if ( misor ) continue; // temporarily, to be improved
2062 // returning back by the same edge is lowest priority
2063 if ( lastEdge.IsSame ( wire->Edge ( j ? wire->NbEdges() : 1 ) ) ) {
2064 if ( ! index && ! canBeClosed ) { // || ( sp && ! samepatch ) ) {
2067 connected = Standard_True;
2068 misoriented = misor;
2070 weigth = ( sp ? 16 : 0 ) + ( connected ? 8 : 0 ) + (misor==0 ? 4 : 0);
2076 // compute starting tangent
2080 Standard_Real edgeTol = 0;
2081 for ( k=1; k <= wire->NbEdges(); k++ ) {
2082 TopoDS_Shape tmpE = wire->Edge(wire->NbEdges()-k+1).Reversed();
2083 TopoDS_Edge edge = ( j ? TopoDS::Edge ( tmpE ) :
2085 edgeTol = BRep_Tool::Tolerance ( edge );
2086 //if ( sae.GetEndTangent2d ( edge, myFace, Standard_False, lPnt, lVec ) ) break;
2087 if ( sae.GetEndTangent2d ( edge, myFace, Standard_False, lPnt, lVec, 1.e-3 ) ) break;
2089 if ( k > wire->NbEdges() ) myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
2091 if ( myClosedMode ) {
2093 shiftu = ShapeAnalysis::AdjustByPeriod ( lPnt.X(), endPnt.X(), myUPeriod );
2094 lPnt.SetX ( lPnt.X() + shiftu );
2097 shiftv = ShapeAnalysis::AdjustByPeriod ( lPnt.Y(), endPnt.Y(), myVPeriod );
2098 lPnt.SetY ( lPnt.Y() + shiftv );
2102 // short segment is to be taken with highest priority by angle
2103 Standard_Real ang = ( shorts(i) >0 ? M_PI : endTan.Angle ( lVec ) );
2104 if ( myClosedMode && shorts(i) <=0 && M_PI-ang < ::Precision::Angular() )
2105 ang = 0.; // abv 21 Mar 00: trj3_s1-md-214.stp #2471: avoid going back
2106 // abv 05 Feb 02: face from Parasolid: use tolerance of edges for check
2107 // for coincidence (instead of vertex tolerance) in order
2108 // this check to be in agreement with check for position of wire segments
2109 // thus avoiding bad effects on overlapping edges
2110 Standard_Real ctol = Max ( edgeTol, BRep_Tool::Tolerance(lastEdge) );
2111 Standard_Boolean conn = IsCoincided ( endPnt, lPnt, myUResolution,
2112 myVResolution, ctol );
2113 Standard_Real dist = endPnt.SquareDistance ( lPnt );
2115 // check if case is better than last found
2117 Standard_Integer w1 = ( sp ? 16 : 0 ) + ( conn ? 4 : 0 ) + (misor==0 ? 8 : 0);
2118 Standard_Integer tail1 = ( !conn && (dist < mindist) ? 2 : 0) + (ang > angle ? 1 : 0);
2119 Standard_Integer tail2 = ( !connected &&(dist > mindist) ? 2 : 0) + (ang < angle ? 1 : 0);
2120 if(w1+tail1 <= weigth+tail2)
2128 misoriented = misor;
2136 // if next segment found, connect it
2139 myInvertEdgeStatus = Standard_True;
2140 ShapeFix_WireSegment seg = seqw.Value(index);
2141 if ( sbwd.IsNull() ) sbwd = new ShapeExtend_WireData;
2142 else if ( samepatch ) { // extend patch indices
2143 IsSamePatch ( seg, myGrid->NbUPatches(), myGrid->NbVPatches(),
2144 iumin, iumax, ivmin, ivmax, Standard_True );
2146 // TopAbs_Orientation or = seg.Orientation();
2147 if ( ! reverse ) sbwd->Add ( seg.WireData() );
2149 Handle(ShapeExtend_WireData) wire = new ShapeExtend_WireData;
2150 wire->ManifoldMode() = Standard_False;
2151 wire->Add ( seg.WireData() );
2152 wire->Reverse ( myFace );
2155 if ( seg.Orientation() == TopAbs_EXTERNAL )
2156 seg.Orientation ( reverse ? TopAbs_REVERSED : TopAbs_FORWARD );
2157 else seg.Orientation ( TopAbs_INTERNAL );
2158 seqw.SetValue ( index, seg );
2160 else if ( sbwd.IsNull() ) break; // stop when no free segments available
2161 // for first segment, remember start point
2162 if ( endV.IsNull() ) {
2163 firstEdge = sbwd->Edge(1);
2164 firstV = sae.FirstVertex ( firstEdge );
2165 //sae.GetEndTangent2d ( firstEdge, myFace, Standard_False, firstPnt, firstTan );
2166 sae.GetEndTangent2d ( firstEdge, myFace, Standard_False, firstPnt, firstTan, 1.e-3 );
2169 // update last edge and vertex (only for not short segments)
2170 Standard_Boolean doupdate = ( index && ( shorts(index) <=0 || endV.IsNull() ) );
2172 lastEdge = sbwd->Edge ( sbwd->NbEdges() );
2173 endV = sae.LastVertex ( lastEdge );
2174 tol = BRep_Tool::Tolerance ( endV );
2175 // BUC60035 2053: iteration on edges is required
2176 Standard_Integer k; // svv #1
2177 for ( k=sbwd->NbEdges(); k >=1; k-- )
2178 //if ( sae.GetEndTangent2d ( sbwd->Edge ( k ), myFace, Standard_True, endPnt, endTan ) )
2179 if ( sae.GetEndTangent2d ( sbwd->Edge ( k ), myFace, Standard_True, endPnt, endTan, 1.e-3 ) )
2181 if ( k <1 ) myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL2 );
2182 if ( myUClosed ) endPnt.SetX ( endPnt.X() + dsu );
2183 if ( myVClosed ) endPnt.SetY ( endPnt.Y() + dsv );
2186 // if closed or no next segment found, add to wires
2187 canBeClosed = endV.IsSame ( firstV );
2188 if ( ! index || ( canBeClosed &&
2189 ! lastEdge.IsSame ( firstEdge ) && // cylinder (seam)
2190 IsCoincided ( endPnt, firstPnt, myUResolution, myVResolution, 2.* tol ) ) ) {
2191 if ( ! endV.IsSame ( sae.FirstVertex ( firstEdge ) ) ) {
2192 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL5 );
2194 cout << "Warning: ShapeFix_ComposeShell::CollectWires: can't close wire" << endl;
2197 ShapeFix_WireSegment s ( sbwd, TopAbs_FORWARD );
2198 s.DefineIUMin(1,iumin);
2199 s.DefineIUMax(1,iumax);
2200 s.DefineIVMin(1,ivmin);
2201 s.DefineIVMax(1,ivmax);
2205 canBeClosed = Standard_False;
2209 // Check if some wires are short in 3d (lie entirely inside one vertex),
2210 // and if yes try to merge them with others
2211 //pdn The short seqments are stil plased in "in" sequence.
2213 for ( i=1; i <= seqw.Length(); i++ ) {
2214 if ( shorts(i) != 1 || seqw(i).IsVertex() || seqw(i).Orientation() == TopAbs_INTERNAL ||
2215 seqw(i).Orientation() == TopAbs_EXTERNAL ) continue;
2217 // find any other wire containing the same vertex
2218 Handle(ShapeExtend_WireData) wd = seqw(i).WireData();
2219 TopoDS_Vertex V = seqw(i).FirstVertex();
2220 Standard_Integer minj=0, mink=0;
2223 Standard_Real mindist=0;
2224 Standard_Boolean samepatch = Standard_False;
2225 // Standard_Integer iumin, iumax, ivmin, ivmax;
2226 seqw(i).GetPatchIndex ( 1, iumin, iumax, ivmin, ivmax );
2227 sae.GetEndTangent2d ( wd->Edge(1), myFace, Standard_False, p2d, vec );
2228 for ( Standard_Integer j=1; j <= wires.Length(); j++ ) {
2229 // if ( j == i ) continue;
2230 // Handle(ShapeExtend_WireData)
2231 sbwd = wires(j).WireData();
2232 for ( Standard_Integer k=1; k <= sbwd->NbEdges(); k++ ) {
2233 if ( !V.IsSame ( sae.FirstVertex ( sbwd->Edge(k) ) ) ) continue; //pdn I suppose that short segment should be inserted into the SAME vertex.
2235 Standard_Integer sp = IsSamePatch ( wires(j), myGrid->NbUPatches(), myGrid->NbVPatches(),
2236 iumin, iumax, ivmin, ivmax );
2237 if ( samepatch && !sp) continue;
2239 sae.GetEndTangent2d ( sbwd->Edge(k), myFace, Standard_False, pp, vec );
2240 Standard_Real dist = pp.SquareDistance ( p2d );
2241 if ( sp && ! samepatch ) { minj = j; mink = k; mindist = dist;samepatch=sp;}
2243 if ( ! minj || mindist > dist ) { minj = j; mink = k; mindist = dist;samepatch=sp; }
2247 //pdn add into resulting sequence!
2248 ShapeFix_WireSegment s ( wd, TopAbs_FORWARD );
2251 cout <<"Warning: Short segment processed as separate wire"<<endl;
2256 // and if found, merge
2257 // Handle(ShapeExtend_WireData)
2258 sbwd = wires(minj).WireData();
2259 for ( Standard_Integer n=1; n <= wd->NbEdges(); n++ )
2260 sbwd->Add ( wd->Edge(n), mink++ );
2262 // wires.Remove ( i );
2268 //=======================================================================
2269 //function : DispatchWires
2271 //=======================================================================
2273 static gp_Pnt2d GetMiddlePoint (const ShapeFix_WireSegment wire,
2274 const TopoDS_Face face)
2276 if(wire.IsVertex()) {
2277 TopoDS_Vertex aV = wire.GetVertex();
2278 gp_Pnt aP3D = BRep_Tool::Pnt(aV );
2279 Handle(Geom_Surface) surf = BRep_Tool::Surface(face);
2280 Handle(ShapeAnalysis_Surface) aSurfTool = new ShapeAnalysis_Surface(surf);
2281 return aSurfTool->ValueOfUV(aP3D,Precision::Confusion());
2284 ShapeAnalysis_Edge sae;
2285 ShapeAnalysis_Curve sac;
2286 Handle(ShapeExtend_WireData) wd = wire.WireData();
2287 for(Standard_Integer i = 1; i <= wd->NbEdges(); i++) {
2288 TopoDS_Edge E = wd->Edge (i);
2289 Standard_Real cf,cl;
2290 Handle(Geom2d_Curve) c2d;
2291 if(sae.PCurve (E,face,c2d,cf,cl,Standard_False)) {
2292 sac.FillBndBox ( c2d, cf, cl, 3, Standard_False, box );
2293 // box.Add(c2d->Value(cf));
2294 // box.Add(c2d->Value(cl));
2295 // box.Add(c2d->Value((cl+cf)/2.));
2298 if ( box.IsVoid() ) return gp_Pnt2d(0.,0.);
2299 Standard_Real aXmin, aYmin, aXmax, aYmax;
2300 box.Get(aXmin, aYmin, aXmax, aYmax);
2301 return gp_Pnt2d ( 0.5 * ( aXmax + aXmin ), 0.5 * ( aYmax + aYmin ) );
2304 //=======================================================================
2305 //function : MakeFacesOnPatch
2307 //=======================================================================
2309 void ShapeFix_ComposeShell::MakeFacesOnPatch (TopTools_SequenceOfShape &faces,
2310 const Handle(Geom_Surface)& surf,
2311 TopTools_SequenceOfShape &loops) const
2315 // Case of single loop: just add it to face
2316 if ( loops.Length() == 1 ) {
2317 TopoDS_Face newFace;
2318 B.MakeFace ( newFace, surf, myLoc, ::Precision::Confusion() );
2319 TopoDS_Shape aSH = loops.Value(1);
2320 if( aSH.ShapeType() != TopAbs_WIRE)
2322 TopoDS_Wire wire = TopoDS::Wire ( loops.Value(1) );
2324 B.Add ( newFace, wire );
2325 if(myInvertEdgeStatus) {
2326 Handle(ShapeFix_Face) sff = new ShapeFix_Face(newFace);
2327 sff->FixAddNaturalBoundMode() = Standard_False;
2328 TopTools_DataMapOfShapeListOfShape MapWires;
2330 sff->FixOrientation(MapWires);
2331 newFace = sff->Face();
2334 faces.Append ( newFace );
2338 // For several loops, first find roots
2339 // make pseudo-face,
2341 B.MakeFace ( pf, surf, myLoc, ::Precision::Confusion() );
2342 Handle(Geom_Surface) atSurf = BRep_Tool::Surface(pf);
2344 Handle(ShapeAnalysis_Surface) aSurfTool = new ShapeAnalysis_Surface(atSurf);
2345 TopTools_SequenceOfShape roots;
2346 Standard_Integer i; // svv #1
2347 for ( i = 1; i <= loops.Length(); i++ ) {
2350 TopoDS_Shape aShape = loops(i);
2351 if(aShape.ShapeType() != TopAbs_WIRE ||
2352 (aShape.Orientation() != TopAbs_FORWARD && aShape.Orientation() != TopAbs_REVERSED))
2355 wr = TopoDS::Wire ( loops(i) );
2356 TopoDS_Iterator ew (wr);
2357 if ( ! ew.More() ) continue;
2359 TopoDS_Edge ed = TopoDS::Edge ( ew.Value() );
2360 while(ed.Orientation() != TopAbs_FORWARD &&
2361 ed.Orientation() != TopAbs_REVERSED ) {
2364 ed = TopoDS::Edge ( ew.Value() );
2368 if ( ! ew.More() ) continue;
2369 Standard_Real cf, cl;
2370 Handle(Geom2d_Curve) cw = BRep_Tool::CurveOnSurface ( ed, pf, cf, cl );
2371 if ( cw.IsNull() ) continue;
2372 unp = cw->Value ( 0.5 * ( cf + cl ) );
2374 Standard_Integer j; // svv #1
2375 for ( j = 1; j <= loops.Length(); j++ ) {
2376 if ( i == j ) continue;
2377 TopoDS_Shape aShape2 = loops(j);
2378 if(aShape2.ShapeType() != TopAbs_WIRE ||
2379 (aShape2.Orientation() != TopAbs_FORWARD &&
2380 aShape2.Orientation() != TopAbs_REVERSED))
2382 TopoDS_Wire w1 = TopoDS::Wire (aShape2);
2385 awtmp.Orientation(TopAbs_FORWARD);
2386 TopoDS_Iterator aIt(w1);
2387 Standard_Integer nbe =0;
2388 for( ; aIt.More() ; aIt.Next()) {
2389 if(aIt.Value().Orientation() == TopAbs_FORWARD ||
2390 aIt.Value().Orientation() == TopAbs_REVERSED) {
2391 B.Add(awtmp,aIt.Value());
2399 B.MakeFace ( fc, surf, myLoc, ::Precision::Confusion() );
2400 B.Add ( fc, awtmp );
2401 BRepTopAdaptor_FClass2d clas ( fc, ::Precision::PConfusion() );
2402 TopAbs_State stPoint = clas.Perform (unp,Standard_False);
2403 if(stPoint == TopAbs_ON || stPoint == TopAbs_UNKNOWN) {
2405 TopoDS_Edge ed = TopoDS::Edge ( ew.Value() );
2406 Standard_Real cf, cl;
2407 Handle(Geom2d_Curve) cw = BRep_Tool::CurveOnSurface ( ed, pf, cf, cl );
2408 // handle tangential case (ON)
2409 while ( stPoint == TopAbs_ON || stPoint == TopAbs_UNKNOWN ) {
2410 stPoint = clas.Perform ( cw->Value(cl), Standard_False );
2411 if ( ! ew.More() ) break;
2413 if ( ! ew.More() ) break;
2414 TopoDS_Edge edge = TopoDS::Edge ( ew.Value() );
2415 if(edge.Orientation() !=TopAbs_FORWARD &&
2416 edge.Orientation() !=TopAbs_REVERSED)
2418 Handle(Geom2d_Curve) c2d = BRep_Tool::CurveOnSurface ( edge, pf, cf, cl );
2419 if ( ! c2d.IsNull() ) cw = c2d;
2422 TopAbs_State stInfin = clas.PerformInfinitePoint();
2423 if ( stPoint != stInfin ) break;
2425 if ( j > loops.Length()) {
2426 roots.Append ( wr );
2427 // loops.Remove ( i-- );
2431 // And remove them from the list of loops
2432 for ( i = 1; i <= loops.Length(); i++ )
2433 for ( Standard_Integer j = 1; j <= roots.Length(); j++ )
2434 if ( loops(i).IsSame ( roots(j) ) ) { loops.Remove(i--); break; }
2436 // check for lost wires, and if they are, make them roots
2437 if ( roots.Length() <=0 && loops.Length() >0 ) {
2439 cout << "Error: ShapeFix_ComposeShell::MakeFacesOnPatch: can't dispatch wires" << endl;
2441 for ( Standard_Integer j=1; j <= loops.Length(); j++ ) {
2442 roots.Append ( loops(j) );
2447 // Then iterate on loops
2448 for ( i=1; i <= roots.Length(); i++ ) {
2449 Standard_Boolean reverse = Standard_False;
2450 TopoDS_Wire wire = TopoDS::Wire ( roots(i) );
2452 B.MakeFace ( fc, surf, myLoc, ::Precision::Confusion() );
2454 BRepTopAdaptor_FClass2d clas ( fc, ::Precision::PConfusion() );
2455 if ( clas.PerformInfinitePoint() == TopAbs_IN ) {
2456 reverse = Standard_True;
2458 cout << "Warning: ShapeFix_ComposeShell::MakeFacesOnPatch: badly oriented wire" << endl;
2462 // find all holes for that loop
2463 TopTools_SequenceOfShape holes; // holes in holes not supported
2464 Standard_Integer j; // svv #1
2465 for ( j=1; j <= loops.Length(); j++ ) {
2467 if(loops(j).ShapeType() == TopAbs_WIRE) {
2468 TopoDS_Wire bw = TopoDS::Wire ( loops(j) );
2469 TopoDS_Iterator ew ( bw );
2470 if ( ! ew.More() ) continue;
2471 TopoDS_Edge ed = TopoDS::Edge ( ew.Value() );
2472 Standard_Real cf, cl;
2473 Handle(Geom2d_Curve) cw = BRep_Tool::CurveOnSurface ( ed, pf, cf, cl );
2474 if ( cw.IsNull() ) continue;
2475 unp = cw->Value ( 0.5 * ( cf + cl ) );
2477 else if(loops(j).ShapeType() == TopAbs_VERTEX) {
2478 TopoDS_Vertex aV = TopoDS::Vertex(loops(j));
2479 gp_Pnt aP = BRep_Tool::Pnt(aV);
2480 unp = aSurfTool->ValueOfUV(aP,Precision::Confusion());
2484 TopAbs_State state = clas.Perform (unp,Standard_False);
2485 if ( (Standard_Boolean) ( state == TopAbs_OUT ) == reverse ) {
2486 holes.Append ( loops(j) );
2487 loops.Remove ( j-- );
2491 // and add them to new face (no orienting is done)
2492 TopoDS_Face newFace;
2493 B.MakeFace ( newFace, surf, myLoc, ::Precision::Confusion() );
2494 B.Add ( newFace, wire );
2495 for ( j=1; j <= holes.Length(); j++ ) {
2496 TopoDS_Shape aSh = holes(j);
2497 if(aSh.ShapeType() == TopAbs_VERTEX) {
2498 TopoDS_Vertex aNewV = ShapeAnalysis_TransferParametersProj::CopyNMVertex(TopoDS::Vertex(aSh), newFace,myFace);
2499 Context()->Replace(aSh,aNewV);
2500 B.Add ( newFace,aNewV);
2503 B.Add ( newFace, holes(j) );
2505 faces.Append ( newFace );
2507 // check for lost wires, and if they are, make them roots
2508 if ( i == roots.Length() && loops.Length() >0 ) {
2510 cout << "Error: ShapeFix_ComposeShell::MakeFacesOnPatch: can't dispatch wires" << endl;
2512 for ( j=1; j <= loops.Length(); j++ ) {
2513 TopoDS_Shape aSh = loops(j);
2514 if(aSh.ShapeType() == TopAbs_WIRE && (aSh.Orientation() == TopAbs_FORWARD ||
2515 aSh.Orientation() == TopAbs_REVERSED))
2516 roots.Append ( loops(j) );
2523 //=======================================================================
2524 //function : DispatchWires
2526 //=======================================================================
2528 void ShapeFix_ComposeShell::DispatchWires (TopTools_SequenceOfShape &faces,
2529 ShapeFix_SequenceOfWireSegment& wires) const
2533 // in closed mode, apply FixShifted to all wires before dispatching them
2534 if ( myClosedMode ) {
2536 sfw.SetFace ( myFace );
2537 sfw.SetPrecision ( Precision() );
2539 // pdn: shift pcurves in the seam to make OK shape w/o fixshifted
2541 for ( i=1; i <= wires.Length(); i++ ) {
2542 if(wires(i).IsVertex())
2544 Handle(ShapeExtend_WireData) sbwd = wires(i).WireData();
2546 for(Standard_Integer jL=1; jL <= sbwd->NbEdges(); jL++ ) {
2547 TopoDS_Edge E = sbwd->Edge(jL);
2548 if ( E.Orientation() == TopAbs_REVERSED && BRep_Tool::IsClosed(E,myFace) ) {
2549 Standard_Real f1,l1, f2, l2;
2550 Handle(Geom2d_Curve) c21 = BRep_Tool::CurveOnSurface(E,myFace,f1,l1);
2551 TopoDS_Shape dummy = E.Reversed();
2552 Handle(Geom2d_Curve) c22 = BRep_Tool::CurveOnSurface(TopoDS::Edge(dummy),myFace,f2,l2);
2553 Standard_Real dPreci = ::Precision::PConfusion()*Precision::PConfusion();
2554 gp_Pnt2d pf1 = c21->Value(f1);
2555 gp_Pnt2d pl1 = c21->Value(l1);
2556 gp_Pnt2d pf2 = c22->Value(f2);
2557 gp_Pnt2d pl2 = c22->Value(l2);
2558 if ( c21 == c22 || pf1.SquareDistance(pf2) < dPreci ||
2559 pl1.SquareDistance(pl2) < dPreci ) {
2560 gp_Vec2d shift(0.,0.);
2561 if ( myUClosed && Abs ( pf2.X() - pl2.X() ) < ::Precision::PConfusion() )
2562 shift.SetX(myUPeriod);
2563 if ( myVClosed && Abs ( pf2.Y() - pl2.Y() ) < ::Precision::PConfusion() )
2564 shift.SetY(myVPeriod);
2565 c22->Translate(shift);
2571 for ( i=1; i <= wires.Length(); i++ ) {
2572 if(wires(i).IsVertex())
2574 Handle(ShapeExtend_WireData) sbwd = wires(i).WireData();
2576 //: abv 30.08.01: torHalf2.sat: if wire contains single degenerated
2577 // edge, skip that wire
2578 if ( sbwd->NbEdges() <=0 ||
2579 ( sbwd->NbEdges() ==1 && BRep_Tool::Degenerated(sbwd->Edge(1)) ) ) {
2587 // force recomputation of degenerated edges (clear pcurves)
2588 ShapeBuild_Edge sbe;
2589 for (Standard_Integer jL=1; jL <= sbwd->NbEdges(); jL++ ) {
2590 if ( BRep_Tool::Degenerated(sbwd->Edge(jL)) )
2591 sbe.RemovePCurve(sbwd->Edge(jL),myFace);
2592 // sfw.FixDegenerated(jL);
2594 sfw.FixDegenerated();
2598 // Compute center points for wires
2599 TColgp_SequenceOfPnt2d mPnts;
2600 Standard_Integer nb = wires.Length();
2602 // pdn protection on empty sequence
2606 Standard_Integer i; //svv #1
2607 for ( i = 1; i <= nb; i++ )
2608 mPnts.Append ( GetMiddlePoint ( wires(i), myFace ) );
2610 // Put each wire on its own surface patch (by reassigning pcurves)
2611 // and build 3d curve if necessary
2612 ShapeBuild_ReShape rs;
2613 ShapeBuild_Edge sbe;
2614 ShapeAnalysis_Edge sae;
2615 Handle(ShapeFix_Edge) sfe = new ShapeFix_Edge;
2617 Standard_Real U1,U2,V1,V2;
2618 myGrid->Bounds(U1,U2,V1,V2);
2619 for ( i = 1; i <= nb; i++ ) {
2621 gp_Pnt2d pnt = mPnts(i);
2622 Standard_Real ush =0., vsh=0.;
2624 ush = ShapeAnalysis::AdjustToPeriod(pnt.X(),U1,U2);
2625 pnt.SetX(pnt.X()+ush);
2628 vsh = ShapeAnalysis::AdjustToPeriod(pnt.Y(),V1,V2);
2629 pnt.SetY(pnt.Y()+vsh);
2632 Standard_Integer indU = myGrid->LocateUParameter ( pnt.X() );
2633 Standard_Integer indV = myGrid->LocateVParameter ( pnt.Y() );
2635 // compute parametric transformation
2637 Standard_Real uFact=1.;
2638 Standard_Boolean needT = myGrid->GlobalToLocalTransformation ( indU, indV, uFact, T );
2639 if ( ush != 0. || vsh != 0. ) {
2641 Sh.SetTranslation ( gp_Vec2d ( ush, vsh ) );
2643 needT = Standard_True;
2645 if(wires(i).IsVertex())
2647 Handle(Geom_Surface) surf = myGrid->Patch ( indU, indV );
2649 B.MakeFace ( face, surf, myLoc, ::Precision::Confusion() );
2650 Handle(ShapeExtend_WireData) sewd = wires(i).WireData();
2651 for ( Standard_Integer j = 1; j <= sewd->NbEdges(); j++ ) {
2652 // Standard_Integer nsplit = ApplyContext ( sewd, j, context );
2653 // if ( nsplit <1 ) { j--; continue; }
2655 TopoDS_Edge edge = sewd->Edge(j);
2657 // !! Accurately copy pcurves for SEAMS and SEAM-like edges !!
2659 // if edge is already copied, don`t copy any more
2660 TopoDS_Edge newEdge;
2661 TopoDS_Edge anInitEdge = edge;
2662 Standard_Boolean ismanifold = (edge.Orientation() == TopAbs_FORWARD ||
2663 edge.Orientation() == TopAbs_REVERSED);
2664 if ( rs.IsRecorded ( edge ) ) {
2666 TopoDS_Shape tmpNE = rs.Value(edge);
2667 newEdge = TopoDS::Edge ( tmpNE );
2672 anInitEdge.Orientation(TopAbs_FORWARD);
2674 newEdge = sbe.Copy ( anInitEdge, Standard_False );
2676 newEdge.Orientation(edge.Orientation());
2677 rs.Replace ( edge, newEdge );
2678 Context()->Replace ( edge, newEdge );
2681 sbe.ReassignPCurve ( newEdge, myFace, face );
2683 // transform pcurve to parametric space of patch
2686 Handle(Geom2d_Curve) c2d;
2687 if ( sae.PCurve ( newEdge, face, c2d, f, l, Standard_False ) ) {
2688 Standard_Real newf = f, newl = l;
2689 Handle(Geom2d_Curve) c2dnew = sbe.TransformPCurve ( c2d, T, uFact, newf, newl );
2690 if ( BRep_Tool::IsClosed ( newEdge, face ) ) {
2691 Standard_Real cf, cl;
2692 Handle(Geom2d_Curve) c2d2;
2694 TopoDS_Shape tmpE = newEdge.Reversed();
2695 TopoDS_Edge e2 = TopoDS::Edge (tmpE );
2696 if ( sae.PCurve ( e2, face, c2d2, cf, cl, Standard_False ) ) {
2697 if ( newEdge.Orientation() == TopAbs_FORWARD )
2698 B.UpdateEdge ( newEdge, c2dnew, c2d2, face, 0. );
2699 else B.UpdateEdge ( newEdge, c2d2, c2dnew, face, 0. );
2701 else B.UpdateEdge ( newEdge, c2dnew, face, 0. );
2703 else B.UpdateEdge ( newEdge, c2dnew, face, 0. );
2704 B.Range ( newEdge, face, newf, newl );
2705 if ( (newf != f || newl != l) && !BRep_Tool::Degenerated(newEdge) )
2706 B.SameRange ( newEdge, Standard_False );
2710 if(!BRep_Tool::SameRange(newEdge)) {
2713 TopoDS_Edge afe = TopoDS::Edge(newEdge.Oriented(TopAbs_FORWARD));
2714 etmp = sbe.Copy (afe , Standard_False );
2717 etmp = sbe.Copy ( newEdge, Standard_False );
2718 sfe->FixAddCurve3d ( etmp );
2719 Standard_Real cf, cl;
2720 Handle(Geom_Curve) c3d;
2721 if(sae.Curve3d(etmp,c3d,cf,cl,Standard_False)) {
2722 B.UpdateEdge ( newEdge, c3d, 0. );
2723 sbe.SetRange3d ( newEdge, cf, cl );
2727 sfe->FixAddCurve3d ( newEdge );
2728 sewd->Set ( newEdge, j );
2732 // Collect wires in packets lying on same surface and dispatch them
2733 TColStd_Array1OfBoolean used ( 1, nb );
2734 used.Init ( Standard_False );
2736 TopTools_SequenceOfShape loops;
2738 Handle(Geom_Surface) Surf;
2739 for ( i = 1; i <= nb; i++ ) {
2740 if ( used(i) ) continue;
2741 Handle(Geom_Surface) S = myGrid->Patch ( mPnts(i) );
2742 if ( Surf.IsNull() ) Surf = S;
2743 else if ( S != Surf ) continue;
2744 used(i) = Standard_True;
2745 ShapeFix_WireSegment aSeg = wires(i);
2746 if(aSeg.IsVertex()) {
2747 TopoDS_Vertex aVert = aSeg.GetVertex();
2748 if(aVert.Orientation() == TopAbs_INTERNAL)
2749 loops.Append(wires(i).GetVertex());
2752 Handle(ShapeExtend_WireData) aWD = aSeg.WireData();
2754 loops.Append ( aWD->Wire() );
2757 if ( Surf.IsNull() ) break;
2759 MakeFacesOnPatch ( faces, Surf, loops );
2763 //======================================================================
2764 //function : SetTransferParamTool
2766 //=======================================================================
2768 void ShapeFix_ComposeShell::SetTransferParamTool(const Handle(ShapeAnalysis_TransferParameters)& TransferParam)
2770 myTransferParamTool = TransferParam;
2773 //=======================================================================
2774 //function : GetTransferParamTool
2776 //=======================================================================
2778 Handle(ShapeAnalysis_TransferParameters) ShapeFix_ComposeShell::GetTransferParamTool() const
2780 return myTransferParamTool;
2783 //=======================================================================
2784 //function : ClosedMode
2786 //=======================================================================
2788 Standard_Boolean &ShapeFix_ComposeShell::ClosedMode()
2790 return myClosedMode;