1 // Created by: Peter KURNEV
2 // Copyright (c) 2010-2012 OPEN CASCADE SAS
3 // Copyright (c) 2007-2010 CEA/DEN, EDF R&D, OPEN CASCADE
4 // Copyright (c) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN, CEDRAT,
5 // EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
7 // The content of this file is subject to the Open CASCADE Technology Public
8 // License Version 6.5 (the "License"). You may not use the content of this file
9 // except in compliance with the License. Please obtain a copy of the License
10 // at http://www.opencascade.org and read it completely before using this file.
12 // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
13 // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
15 // The Original Code and all software distributed under the License is
16 // distributed on an "AS IS" basis, without warranty of any kind, and the
17 // Initial Developer hereby disclaims all such warranties, including without
18 // limitation, any warranties of merchantability, fitness for a particular
19 // purpose or non-infringement. Please see the License for the specific terms
20 // and conditions governing the rights and limitations under the License.
23 #include <BOPTools_AlgoTools.ixx>
25 #include <Precision.hxx>
29 #include <gp_Pnt2d.hxx>
30 #include <gp_Cylinder.hxx>
31 #include <gp_Cone.hxx>
32 #include <gp_Sphere.hxx>
33 #include <gp_Torus.hxx>
35 #include <Geom2d_Curve.hxx>
36 #include <Geom_Surface.hxx>
37 #include <Geom_Plane.hxx>
38 #include <Geom_TrimmedCurve.hxx>
39 #include <Geom_Curve.hxx>
40 #include <GeomAPI_ProjectPointOnSurf.hxx>
41 #include <Geom2dInt_Geom2dCurveTool.hxx>
43 #include <TopAbs_Orientation.hxx>
45 #include <TopoDS_Compound.hxx>
46 #include <TopoDS_CompSolid.hxx>
47 #include <TopoDS_Solid.hxx>
48 #include <TopoDS_Shell.hxx>
49 #include <TopoDS_Wire.hxx>
51 #include <BRep_Builder.hxx>
52 #include <BRep_Tool.hxx>
53 #include <BRepLib.hxx>
54 #include <BRepAdaptor_Curve2d.hxx>
55 #include <BRepAdaptor_Surface.hxx>
56 #include <BRepClass3d_SolidClassifier.hxx>
58 #include <TopExp_Explorer.hxx>
60 #include <IntTools_Tools.hxx>
62 #include <BOPTools.hxx>
63 #include <BOPTools_CoupleOfShape.hxx>
64 #include <BOPTools_ListOfCoupleOfShape.hxx>
65 #include <BOPTools_AlgoTools2D.hxx>
66 #include <BOPTools_AlgoTools3D.hxx>
68 #include <BOPCol_IndexedMapOfShape.hxx>
69 #include <BOPCol_MapOfShape.hxx>
71 #include <BOPInt_ShrunkRange.hxx>
75 Standard_Real AngleWithRef(const gp_Dir& theD1,
77 const gp_Dir& theDRef);
79 inline Standard_Real fsqrt(Standard_Real val);
82 Standard_Boolean FindFacePairs (const TopoDS_Edge& theE,
83 const BOPCol_ListOfShape& thLF,
84 BOPTools_ListOfCoupleOfShape& theLCFF,
85 Handle(BOPInt_Context)& theContext);
87 TopAbs_Orientation Orientation(const TopoDS_Edge& anE,
88 const TopoDS_Face& aF);
91 void GetFaceDir(const TopoDS_Edge& aE,
92 const TopoDS_Face& aF,
94 const Standard_Real aT,
98 Handle(BOPInt_Context)& theContext,
99 GeomAPI_ProjectPointOnSurf& aProjPL);
101 Standard_Boolean FindPointInFace(const TopoDS_Edge& aE,
102 const TopoDS_Face& aF,
106 Handle(BOPInt_Context)& theContext,
107 GeomAPI_ProjectPointOnSurf& aProjPL);
109 //=======================================================================
110 // function: MakeConnexityBlocks
112 //=======================================================================
113 void BOPTools_AlgoTools::MakeConnexityBlocks (const TopoDS_Shape& theS,
114 const TopAbs_ShapeEnum theType1,
115 const TopAbs_ShapeEnum theType2,
116 BOPCol_ListOfShape& theLCB)
118 Standard_Integer aNbF, aNbAdd, aNbAdd1, i;
122 TopExp_Explorer aExp;
123 BOPCol_MapOfShape aMP;
124 BOPCol_IndexedMapOfShape aMCB, aMAdd, aMAdd1;
125 BOPCol_IndexedDataMapOfShapeListOfShape aMEF;
126 BOPCol_ListIteratorOfListOfShape aItLF;
129 BOPTools::MapShapesAndAncestors(theS, theType1, theType2, aMEF);
132 aIt.Initialize(theS);
133 for (; aIt.More(); aIt.Next()) {
134 const TopoDS_Shape& aF1=aIt.Value();
135 if (aMP.Contains(aF1)) {
146 aNbAdd = aMAdd.Extent();
147 for (i=1; i<=aNbAdd; ++i) {
148 const TopoDS_Shape& aF=aMAdd(i);
150 aExp.Init(aF, theType1);
151 for (; aExp.More(); aExp.Next()) {
152 const TopoDS_Shape& aE=aExp.Current();
154 const BOPCol_ListOfShape& aLF=aMEF.FindFromKey(aE);
155 aItLF.Initialize(aLF);
156 for (; aItLF.More(); aItLF.Next()) {
157 const TopoDS_Shape& aFx=aItLF.Value();
158 if (aFx.IsSame(aF)) {
161 if (aMCB.Contains(aFx)) {
166 }//for (; aExp.More(); aExp.Next()){
168 }// for (i=1; i<=aNbAdd; ++i) {
170 aNbAdd1=aMAdd1.Extent();
172 break;// ->make new CB from aMCB
176 for (i=1; i<=aNbAdd1; ++i) {
177 const TopoDS_Shape& aFAdd = aMAdd1(i);
184 aBB.MakeCompound(aC);
186 for (i=1; i<=aNbF; ++i) {
187 const TopoDS_Shape& aF=aMCB(i);
193 }// for (; aIt.More(); aIt.Next())
195 //=======================================================================
196 // function: OrientFacesOnShell
198 //=======================================================================
199 void BOPTools_AlgoTools::OrientFacesOnShell (TopoDS_Shape& aShell)
201 Standard_Boolean bIsProcessed1, bIsProcessed2;
202 Standard_Integer i, aNbE, aNbF, j;
203 TopAbs_Orientation anOrE1, anOrE2;
204 TopoDS_Face aF1x, aF2x;
205 TopoDS_Shape aShellNew;
206 BOPCol_IndexedDataMapOfShapeListOfShape aEFMap;
207 BOPCol_IndexedMapOfShape aProcessedFaces;
210 BOPTools_AlgoTools::MakeContainer(TopAbs_SHELL, aShellNew);
212 BOPTools::MapShapesAndAncestors(aShell, TopAbs_EDGE, TopAbs_FACE, aEFMap);
213 aNbE=aEFMap.Extent();
215 // One seam edge in aEFMap contains 2 equivalent faces.
216 for (i=1; i<=aNbE; ++i) {
217 BOPCol_ListOfShape& aLF=aEFMap.ChangeFromIndex(i);
220 BOPCol_ListOfShape aLFTmp;
221 BOPCol_IndexedMapOfShape aFM;
223 BOPCol_ListIteratorOfListOfShape anIt(aLF);
224 for (; anIt.More(); anIt.Next()) {
225 const TopoDS_Shape& aF=anIt.Value();
226 if (!aFM.Contains(aF)) {
237 for (i=1; i<=aNbE; ++i) {
238 const TopoDS_Edge& aE=(*(TopoDS_Edge*)(&aEFMap.FindKey(i)));
239 if (BRep_Tool::Degenerated(aE)) {
243 const BOPCol_ListOfShape& aLF=aEFMap.FindFromIndex(i);
249 TopoDS_Face& aF1=(*(TopoDS_Face*)(&aLF.First()));
250 TopoDS_Face& aF2=(*(TopoDS_Face*)(&aLF.Last()));
252 bIsProcessed1=aProcessedFaces.Contains(aF1);
253 bIsProcessed2=aProcessedFaces.Contains(aF2);
254 if (bIsProcessed1 && bIsProcessed2) {
258 if (!bIsProcessed1 && !bIsProcessed2) {
259 aProcessedFaces.Add(aF1);
260 aBB.Add(aShellNew, aF1);
261 bIsProcessed1=!bIsProcessed1;
266 j=aProcessedFaces.FindIndex(aF1);
267 aF1x=(*(TopoDS_Face*)(&aProcessedFaces.FindKey(j)));
272 j=aProcessedFaces.FindIndex(aF2);
273 aF2x=(*(TopoDS_Face*)(&aProcessedFaces.FindKey(j)));
276 anOrE1=Orientation(aE, aF1x);
277 anOrE2=Orientation(aE, aF2x);
279 if (bIsProcessed1 && !bIsProcessed2) {
280 if (anOrE1==anOrE2) {
281 if (!BRep_Tool::IsClosed(aE, aF1) &&
282 !BRep_Tool::IsClosed(aE, aF2)) {
286 aProcessedFaces.Add(aF2);
287 aBB.Add(aShellNew, aF2);
289 else if (!bIsProcessed1 && bIsProcessed2) {
290 if (anOrE1==anOrE2) {
291 if (!BRep_Tool::IsClosed(aE, aF1) &&
292 !BRep_Tool::IsClosed(aE, aF2)) {
296 aProcessedFaces.Add(aF1);
297 aBB.Add(aShellNew, aF1);
302 for (i=1; i<=aNbE; ++i) {
303 const TopoDS_Edge& aE=(*(TopoDS_Edge*)(&aEFMap.FindKey(i)));
304 if (BRep_Tool::Degenerated(aE)) {
308 const BOPCol_ListOfShape& aLF=aEFMap.FindFromIndex(i);
311 BOPCol_ListIteratorOfListOfShape anIt(aLF);
312 for(; anIt.More(); anIt.Next()) {
313 const TopoDS_Face& aF=(*(TopoDS_Face*)(&anIt.Value()));
314 if (!aProcessedFaces.Contains(aF)) {
315 aProcessedFaces.Add(aF);
316 aBB.Add(aShellNew, aF);
323 //=======================================================================
324 //function : Orientation
326 //=======================================================================
327 TopAbs_Orientation Orientation(const TopoDS_Edge& anE,
328 const TopoDS_Face& aF)
330 TopAbs_Orientation anOr=TopAbs_INTERNAL;
332 TopExp_Explorer anExp;
333 anExp.Init(aF, TopAbs_EDGE);
334 for (; anExp.More(); anExp.Next()) {
335 const TopoDS_Edge& anEF1=(*(TopoDS_Edge*)(&anExp.Current()));
336 if (anEF1.IsSame(anE)) {
337 anOr=anEF1.Orientation();
347 //=======================================================================
348 // function: MakeConnexityBlock.
350 //=======================================================================
351 void BOPTools_AlgoTools::MakeConnexityBlock (BOPCol_ListOfShape& theLFIn,
352 BOPCol_IndexedMapOfShape& theMEAvoid,
353 BOPCol_ListOfShape& theLCB,
354 const Handle(NCollection_BaseAllocator)& theAllocator)
356 Standard_Integer aNbF, aNbAdd1, aNbAdd, i;
357 TopExp_Explorer aExp;
358 BOPCol_ListIteratorOfListOfShape aIt;
360 BOPCol_IndexedMapOfShape aMCB(100, theAllocator);
361 BOPCol_IndexedMapOfShape aMAdd(100, theAllocator);
362 BOPCol_IndexedMapOfShape aMAdd1(100, theAllocator);
363 BOPCol_IndexedDataMapOfShapeListOfShape aMEF(100, theAllocator);
366 aNbF=theLFIn.Extent();
367 aIt.Initialize(theLFIn);
368 for (; aIt.More(); aIt.Next()) {
369 const TopoDS_Shape& aF=aIt.Value();
370 BOPTools::MapShapesAndAncestors(aF, TopAbs_EDGE, TopAbs_FACE, aMEF);
374 const TopoDS_Shape& aF1=theLFIn.First();
379 aNbAdd = aMAdd.Extent();
380 for (i=1; i<=aNbAdd; ++i) {
381 const TopoDS_Shape& aF=aMAdd(i);
384 aExp.Init(aF, TopAbs_EDGE);
385 for (; aExp.More(); aExp.Next()) {
386 const TopoDS_Shape& aE=aExp.Current();
387 if (theMEAvoid.Contains(aE)){
391 const BOPCol_ListOfShape& aLF=aMEF.FindFromKey(aE);
393 for (; aIt.More(); aIt.Next()) {
394 const TopoDS_Shape& aFx=aIt.Value();
395 if (aFx.IsSame(aF)) {
398 if (aMCB.Contains(aFx)) {
403 }//for (; aExp.More(); aExp.Next()){
405 }// for (i=1; i<=aNbAdd; ++i) {
407 aNbAdd1=aMAdd1.Extent();
413 for (i=1; i<=aNbAdd1; ++i) {
414 const TopoDS_Shape& aFAdd=aMAdd1(i);
422 for (i=1; i<=aNbF; ++i) {
423 const TopoDS_Shape& aF=aMCB(i);
427 //=======================================================================
428 // function: ComputeStateByOnePoint
430 //=======================================================================
431 TopAbs_State BOPTools_AlgoTools::ComputeStateByOnePoint(const TopoDS_Shape& theS,
432 const TopoDS_Solid& theRef,
433 const Standard_Real theTol,
434 Handle(BOPInt_Context)& theContext)
437 TopAbs_ShapeEnum aType;
439 aState=TopAbs_UNKNOWN;
440 aType=theS.ShapeType();
441 if (aType==TopAbs_VERTEX) {
442 const TopoDS_Vertex& aV=(*(TopoDS_Vertex*)(&theS));
443 aState=BOPTools_AlgoTools::ComputeState(aV, theRef, theTol, theContext);
445 else if (aType==TopAbs_EDGE) {
446 const TopoDS_Edge& aE=(*(TopoDS_Edge*)(&theS));
447 aState=BOPTools_AlgoTools::ComputeState(aE, theRef, theTol, theContext);
452 //=======================================================================
453 // function: ComputeState
455 //=======================================================================
456 TopAbs_State BOPTools_AlgoTools::ComputeState(const TopoDS_Face& theF,
457 const TopoDS_Solid& theRef,
458 const Standard_Real theTol,
459 BOPCol_IndexedMapOfShape& theBounds,
460 Handle(BOPInt_Context)& theContext)
463 TopExp_Explorer aExp;
468 aState=TopAbs_UNKNOWN;
470 aExp.Init(theF, TopAbs_EDGE);
471 for (; aExp.More(); aExp.Next()) {
472 const TopoDS_Edge& aSE=(*(TopoDS_Edge*)(&aExp.Current()));
473 if (BRep_Tool::Degenerated(aSE)) {
477 if (!theBounds.Contains(aSE)) {
478 const TopoDS_Edge& aE=(*(TopoDS_Edge*)(&aSE));
479 aState=BOPTools_AlgoTools::ComputeState(aE, theRef, theTol, theContext);
483 aE1=(*(TopoDS_Edge*)(&aSE));
486 // !!<- process edges that are all on theRef
488 BOPTools_AlgoTools3D::PointNearEdge(aE1, theF, aP2D, aP3D, theContext);
489 aState=BOPTools_AlgoTools::ComputeState(aP3D, theRef, theTol, theContext);
494 //=======================================================================
495 // function: ComputeState
497 //=======================================================================
498 TopAbs_State BOPTools_AlgoTools::ComputeState(const TopoDS_Vertex& theV,
499 const TopoDS_Solid& theRef,
500 const Standard_Real theTol,
501 Handle(BOPInt_Context)& theContext)
506 aP3D=BRep_Tool::Pnt(theV);
507 aState=BOPTools_AlgoTools::ComputeState(aP3D, theRef, theTol, theContext);
510 //=======================================================================
511 // function: ComputeState
513 //=======================================================================
514 TopAbs_State BOPTools_AlgoTools::ComputeState(const TopoDS_Edge& theE,
515 const TopoDS_Solid& theRef,
516 const Standard_Real theTol,
517 Handle(BOPInt_Context)& theContext)
519 Standard_Real aT1, aT2, aT = 0.;
521 Handle(Geom_Curve) aC3D;
524 aC3D = BRep_Tool::Curve(theE, aT1, aT2);
527 //it means that we are in degenerated edge
528 const TopoDS_Vertex& aV = TopExp::FirstVertex(theE);
530 return TopAbs_UNKNOWN;
532 aP3D=BRep_Tool::Pnt(aV);
535 Standard_Boolean bF2Inf, bL2Inf;
536 Standard_Real dT=10.;
538 bF2Inf = Precision::IsNegativeInfinite(aT1);
539 bL2Inf = Precision::IsPositiveInfinite(aT2);
541 if (bF2Inf && !bL2Inf) {
544 else if (!bF2Inf && bL2Inf) {
547 else if (bF2Inf && bL2Inf) {
551 aT=IntTools_Tools::IntermediatePoint(aT1, aT2);
556 aState=BOPTools_AlgoTools::ComputeState(aP3D, theRef, theTol, theContext);
560 //=======================================================================
561 // function: ComputeState
563 //=======================================================================
564 TopAbs_State BOPTools_AlgoTools::ComputeState(const gp_Pnt& theP,
565 const TopoDS_Solid& theRef,
566 const Standard_Real theTol,
567 Handle(BOPInt_Context)& theContext)
571 BRepClass3d_SolidClassifier& aSC=theContext->SolidClassifier(theRef);
572 aSC.Perform(theP, theTol);
578 //=======================================================================
579 //function : IsInternalFace
581 //=======================================================================
582 Standard_Integer BOPTools_AlgoTools::IsInternalFace
583 (const TopoDS_Face& theFace,
584 const TopoDS_Solid& theSolid,
585 BOPCol_IndexedDataMapOfShapeListOfShape& theMEF,
586 const Standard_Real theTol,
587 Handle(BOPInt_Context)& theContext)
589 Standard_Boolean bDegenerated;
590 Standard_Integer aNbF, iRet, iFound;
591 TopAbs_Orientation aOr;
593 TopExp_Explorer aExp;
594 BOPCol_ListIteratorOfListOfShape aItF;
596 // For all invoked functions: [::IsInternalFace(...)]
597 // the returned value iRet means:
598 // iRet=0; - state is not IN
599 // iRet=1; - state is IN
600 // iRet=2; - state can not be found by the method of angles
602 // For this function the returned value iRet means:
603 // iRet=0; - state is not IN
604 // iRet=1; - state is IN
607 // 1 Try to find an edge from theFace in theMEF
609 aExp.Init(theFace, TopAbs_EDGE);
610 for(; aExp.More(); aExp.Next()) {
611 const TopoDS_Edge& aE=(*(TopoDS_Edge*)(&aExp.Current()));
612 if (!theMEF.Contains(aE)) {
618 aOr=aE.Orientation();
619 if (aOr==TopAbs_INTERNAL) {
622 bDegenerated=BRep_Tool::Degenerated(aE);
627 BOPCol_ListOfShape& aLF=theMEF.ChangeFromKey(aE);
630 return iRet; // it can not be so
634 // aE is internal edge on aLF.First()
635 const TopoDS_Face& aF1=(*(TopoDS_Face*)(&aLF.First()));
636 BOPTools_AlgoTools::GetEdgeOnFace(aE, aF1, aE1);
637 if (aE1.Orientation()!=TopAbs_INTERNAL) {
642 iRet=BOPTools_AlgoTools::IsInternalFace(theFace, aE, aF1, aF1, theContext);
647 const TopoDS_Face& aF1=(*(TopoDS_Face*)(&aLF.First()));
648 const TopoDS_Face& aF2=(*(TopoDS_Face*)(&aLF.Last()));
650 if (aF2.IsSame(aF1) && BRep_Tool::IsClosed(aE, aF1)) {
651 // treat as it was for 1 face
652 iRet=BOPTools_AlgoTools::IsInternalFace(theFace, aE, aF1, aF2, theContext);
659 return iRet; // it can not be so
661 else { // aNbF=2,4,6,8,...
662 iRet=BOPTools_AlgoTools::IsInternalFace(theFace, aE, aLF, theContext);
665 }//for(; aExp.More(); aExp.Next()) {
668 // the face has no shared edges with the solid
676 //========================================
677 // 2. Classify face using classifier
680 BOPCol_IndexedMapOfShape aBounds;
682 BOPTools::MapShapes(theSolid, TopAbs_EDGE, aBounds);
684 aState=BOPTools_AlgoTools::ComputeState(theFace, theSolid, theTol, aBounds, theContext);
686 iRet=(aState==TopAbs_IN)? 1 : 0;
690 //=======================================================================
691 //function : IsInternalFace
693 //=======================================================================
694 Standard_Integer BOPTools_AlgoTools::IsInternalFace(const TopoDS_Face& theFace,
695 const TopoDS_Edge& theEdge,
696 BOPCol_ListOfShape& theLF,
697 Handle(BOPInt_Context)& theContext)
699 Standard_Integer aNbF, iRet;
705 const TopoDS_Face& aF1=(*(TopoDS_Face*)(&theLF.First()));
706 const TopoDS_Face& aF2=(*(TopoDS_Face*)(&theLF.Last()));
707 iRet=BOPTools_AlgoTools::IsInternalFace(theFace, theEdge, aF1, aF2, theContext);
712 BOPTools_ListOfCoupleOfShape aLCFF;
713 BOPTools_ListIteratorOfListOfCoupleOfShape aIt;
715 FindFacePairs(theEdge, theLF, aLCFF, theContext);
717 aIt.Initialize(aLCFF);
718 for (; aIt.More(); aIt.Next()) {
719 BOPTools_CoupleOfShape& aCSFF=aIt.ChangeValue();
721 const TopoDS_Face& aF1=(*(TopoDS_Face*)(&aCSFF.Shape1()));
722 const TopoDS_Face& aF2=(*(TopoDS_Face*)(&aCSFF.Shape2()));
723 iRet=BOPTools_AlgoTools::IsInternalFace(theFace, theEdge, aF1, aF2, theContext);
731 //=======================================================================
732 //function : IsInternalFace
734 //=======================================================================
735 Standard_Integer BOPTools_AlgoTools::IsInternalFace
736 (const TopoDS_Face& theFace,
737 const TopoDS_Edge& theEdge,
738 const TopoDS_Face& theFace1,
739 const TopoDS_Face& theFace2,
740 Handle(BOPInt_Context)& theContext)
742 Standard_Boolean bRet;
743 Standard_Integer iRet;
744 TopoDS_Edge aE1, aE2;
746 BOPTools_ListOfCoupleOfShape theLCSOff;
747 BOPTools_CoupleOfShape aCS1, aCS2;
749 BOPTools_AlgoTools::GetEdgeOnFace(theEdge, theFace1, aE1);
750 if (aE1.Orientation()==TopAbs_INTERNAL) {
752 aE1.Orientation(TopAbs_FORWARD);
753 aE2.Orientation(TopAbs_REVERSED);
755 else if (theFace1==theFace2) {
757 aE1.Orientation(TopAbs_FORWARD);
758 aE2.Orientation(TopAbs_REVERSED);
761 BOPTools_AlgoTools::GetEdgeOnFace(theEdge, theFace2, aE2);
764 aCS1.SetShape1(theEdge);
765 aCS1.SetShape2(theFace);
766 theLCSOff.Append(aCS1);
769 aCS2.SetShape2(theFace2);
770 theLCSOff.Append(aCS2);
772 bRet=GetFaceOff(aE1, theFace1, theLCSOff, aFOff, theContext);
774 iRet=0; // theFace is not internal
775 if (theFace.IsEqual(aFOff)) {
776 // theFace is internal
779 // theFace seems to be internal
785 //=======================================================================
786 //function : GetFaceOff
788 //=======================================================================
789 Standard_Boolean BOPTools_AlgoTools::GetFaceOff
790 (const TopoDS_Edge& theE1,
791 const TopoDS_Face& theF1,
792 BOPTools_ListOfCoupleOfShape& theLCSOff,
793 TopoDS_Face& theFOff,
794 Handle(BOPInt_Context)& theContext)
796 Standard_Boolean bRet;
797 Standard_Real aT, aT1, aT2, aAngle, aTwoPI, aAngleMin;
798 Standard_Real aUmin, aUsup, aVmin, aVsup;
799 gp_Pnt aPn1, aPn2, aPx;
800 gp_Dir aDN1, aDN2, aDBF, aDBF2, aDTF;
802 TopAbs_Orientation aOr;
803 Handle(Geom_Curve)aC3D;
804 Handle(Geom_Plane) aPL;
805 BOPTools_ListIteratorOfListOfCoupleOfShape aIt;
806 GeomAPI_ProjectPointOnSurf aProjPL;
810 aC3D =BRep_Tool::Curve(theE1, aT1, aT2);
811 aT=BOPTools_AlgoTools2D::IntermediatePoint(aT1, aT2);
814 BOPTools_AlgoTools2D::EdgeTangent(theE1, aT, aVTgt);
815 gp_Dir aDTgt(aVTgt), aDTgt2;
816 aOr = theE1.Orientation();
818 aPL = new Geom_Plane(aPx, aDTgt);
819 aPL->Bounds(aUmin, aUsup, aVmin, aVsup);
820 aProjPL.Init(aPL, aUmin, aUsup, aVmin, aVsup);
822 GetFaceDir(theE1, theF1, aPx, aT, aDTgt, aDN1, aDBF, theContext, aProjPL);
827 aIt.Initialize(theLCSOff);
828 for (; aIt.More(); aIt.Next()) {
829 const BOPTools_CoupleOfShape& aCS=aIt.Value();
830 const TopoDS_Edge& aE2=(*(TopoDS_Edge*)(&aCS.Shape1()));
831 const TopoDS_Face& aF2=(*(TopoDS_Face*)(&aCS.Shape2()));
833 aDTgt2 = (aE2.Orientation()==aOr) ? aDTgt : aDTgt.Reversed();
834 GetFaceDir(aE2, aF2, aPx, aT, aDTgt2, aDN2, aDBF2, theContext, aProjPL);
836 aAngle=AngleWithRef(aDBF, aDBF2, aDTF);
839 aAngle=aTwoPI+aAngle;
842 if (aAngle<Precision::Angular()) {
846 else if (aF2.IsSame(theF1)) {
851 if (aAngle<aAngleMin){
855 else if (aAngle==aAngleMin) {
856 // the minimal angle can not be found
862 //=======================================================================
863 //function : GetEdgeOff
865 //=======================================================================
866 Standard_Boolean BOPTools_AlgoTools::GetEdgeOff(const TopoDS_Edge& theE1,
867 const TopoDS_Face& theF2,
870 Standard_Boolean bFound;
871 TopAbs_Orientation aOr1, aOr1C, aOr2;
872 TopExp_Explorer anExp;
874 bFound=Standard_False;
875 aOr1=theE1.Orientation();
876 aOr1C=TopAbs::Reverse(aOr1);
878 anExp.Init(theF2, TopAbs_EDGE);
879 for (; anExp.More(); anExp.Next()) {
880 const TopoDS_Edge& aEF2=(*(TopoDS_Edge*)(&anExp.Current()));
881 if (aEF2.IsSame(theE1)) {
882 aOr2=aEF2.Orientation();
893 //=======================================================================
894 //function : AreFacesSameDomain
896 //=======================================================================
897 Standard_Boolean BOPTools_AlgoTools::AreFacesSameDomain(const TopoDS_Face& theF1,
898 const TopoDS_Face& theF2,
899 Handle(BOPInt_Context)& theContext)
901 Standard_Boolean bFlag;
902 Standard_Integer iErr;
903 Standard_Real aTolF1, aTolF2, aTol;
906 TopoDS_Face aF1, aF2;
908 TopExp_Explorer aExp;
910 bFlag=Standard_False;
913 aF1.Orientation(TopAbs_FORWARD);
915 aF2.Orientation(TopAbs_FORWARD);
917 aTolF1=BRep_Tool::Tolerance(aF1);
919 aExp.Init(aF1, TopAbs_EDGE);
920 for (; aExp.More(); aExp.Next()) {
921 aE1=(*(TopoDS_Edge*)(&aExp.Current()));
922 if (!BRep_Tool::Degenerated(aE1)) {
923 Standard_Real aTolE = BRep_Tool::Tolerance(aE1);
924 aTolF1 = (aTolE > aTolF1) ? aTolE : aTolF1;
928 aTolF2=BRep_Tool::Tolerance(aF2);
931 iErr = BOPTools_AlgoTools3D::PointInFace(aF1, aP, aP2D, theContext);
933 bFlag=theContext->IsValidPointForFace(aP, aF2, aTol);
939 //=======================================================================
940 //function : CheckSameGeom
942 //=======================================================================
943 Standard_Boolean BOPTools_AlgoTools::CheckSameGeom(const TopoDS_Face& theF1,
944 const TopoDS_Face& theF2,
945 Handle(BOPInt_Context)& theContext)
947 Standard_Boolean bRet;
948 Standard_Real aTolF1, aTolF2, aTol;
951 TopExp_Explorer aExp;
954 aExp.Init(theF1, TopAbs_EDGE);
955 for (; aExp.More(); aExp.Next()) {
956 const TopoDS_Edge& aE=(*(TopoDS_Edge*)(&aExp.Current()));
957 if (!BRep_Tool::Degenerated(aE)) {
958 aTolF1=BRep_Tool::Tolerance(theF1);
959 aTolF2=BRep_Tool::Tolerance(theF2);
961 BOPTools_AlgoTools3D::PointNearEdge(aE, theF1, aP2D, aP, theContext);
962 bRet=theContext->IsValidPointForFace(aP, theF2, aTol);
968 //=======================================================================
971 //=======================================================================
972 Standard_Integer BOPTools_AlgoTools::Sense (const TopoDS_Face& theF1,
973 const TopoDS_Face& theF2)
975 Standard_Integer iSense=0;
977 TopoDS_Edge aE1, aE2;
978 TopExp_Explorer aExp;
980 aExp.Init(theF1, TopAbs_EDGE);
981 for (; aExp.More(); aExp.Next()) {
982 aE1=(*(TopoDS_Edge*)(&aExp.Current()));
983 if (!BRep_Tool::Degenerated(aE1)) {
984 if (!BRep_Tool::IsClosed(aE1, theF1)) {
990 aExp.Init(theF2, TopAbs_EDGE);
991 for (; aExp.More(); aExp.Next()) {
992 aE2=(*(TopoDS_Edge*)(&aExp.Current()));
993 if (!BRep_Tool::Degenerated(aE2)) {
994 if (!BRep_Tool::IsClosed(aE2, theF2)) {
995 if (aE2.IsSame(aE1)) {
1007 BOPTools_AlgoTools3D::GetNormalToFaceOnEdge(aE1, theF1, aDNF1);
1008 BOPTools_AlgoTools3D::GetNormalToFaceOnEdge(aE2, theF2, aDNF2);
1010 iSense=BOPTools_AlgoTools3D::SenseFlag(aDNF1, aDNF2);
1014 //=======================================================================
1015 // function: IsSplitToReverse
1017 //=======================================================================
1018 Standard_Boolean BOPTools_AlgoTools::IsSplitToReverse(const TopoDS_Shape& theSp,
1019 const TopoDS_Shape& theSr,
1020 Handle(BOPInt_Context)& theContext)
1022 Standard_Boolean bRet;
1023 TopAbs_ShapeEnum aType;
1025 bRet=Standard_False;
1027 aType=theSp.ShapeType();
1030 const TopoDS_Edge& aESp=(*(TopoDS_Edge*)(&theSp));
1031 const TopoDS_Edge& aESr=(*(TopoDS_Edge*)(&theSr));
1032 bRet=BOPTools_AlgoTools::IsSplitToReverse(aESp, aESr, theContext);
1037 const TopoDS_Face& aFSp=(*(TopoDS_Face*)(&theSp));
1038 const TopoDS_Face& aFSr=(*(TopoDS_Face*)(&theSr));
1039 bRet=BOPTools_AlgoTools::IsSplitToReverse(aFSp, aFSr, theContext);
1048 //=======================================================================
1049 //function :IsSplitToReverse
1051 //=======================================================================
1052 Standard_Boolean BOPTools_AlgoTools::IsSplitToReverse(const TopoDS_Face& theFSp,
1053 const TopoDS_Face& theFSr,
1054 Handle(BOPInt_Context)& theContext)
1056 Standard_Boolean bRet, bFound, bInFace;
1057 Standard_Real aT1, aT2, aT, aU, aV, aScPr;
1058 gp_Pnt aPFSp, aPFSr;
1061 Handle(Geom_Surface) aSr, aSp;
1062 TopAbs_Orientation aOrSr, aOrSp;
1063 TopExp_Explorer anExp;
1066 bRet=Standard_False;
1068 aSr=BRep_Tool::Surface(theFSr);
1069 aSp=BRep_Tool::Surface(theFSp);
1071 aOrSr=theFSr.Orientation();
1072 aOrSp=theFSp.Orientation();
1073 bRet=(aOrSr!=aOrSp);
1077 bFound=Standard_False;
1078 anExp.Init(theFSp, TopAbs_EDGE);
1079 for (; anExp.More(); anExp.Next()) {
1080 aESp=(*(TopoDS_Edge*)(&anExp.Current()));
1081 if (!BRep_Tool::Degenerated(aESp)) {
1082 if (!BRep_Tool::IsClosed(aESp, theFSp)) {
1089 Standard_Boolean bFlag;
1090 Standard_Integer iErr;
1093 iErr=BOPTools_AlgoTools3D::PointInFace(theFSp, aPFSp, aP2DFSp, theContext);
1098 aP2DFSp.Coord(aU, aV);
1099 bFlag=BOPTools_AlgoTools3D::GetNormalToSurface(aSp, aU, aV, aDNFSp);
1105 BRep_Tool::Range(aESp, aT1, aT2);
1106 aT=BOPTools_AlgoTools2D::IntermediatePoint(aT1, aT2);
1107 BOPTools_AlgoTools3D::GetApproxNormalToFaceOnEdge(aESp, theFSp, aT, aPFSp, aDNFSp, theContext);
1110 // Parts of theContext->ComputeVS(..)
1111 GeomAPI_ProjectPointOnSurf& aProjector=theContext->ProjPS(theFSr);
1112 aProjector.Perform(aPFSp);
1113 if (!aProjector.IsDone()) {
1117 aProjector.LowerDistanceParameters(aU, aV);
1118 gp_Pnt2d aP2D(aU, aV);
1119 bInFace=theContext->IsPointInFace (theFSr, aP2D);
1124 aSr->D1(aU, aV, aPFSr, aD1U, aD1V);
1127 gp_Dir aDNFSr=aDD1U^aDD1V;
1128 if (theFSr.Orientation()==TopAbs_REVERSED){
1132 aScPr=aDNFSp*aDNFSr;
1137 //=======================================================================
1138 //function :IsSplitToReverse
1140 //=======================================================================
1141 Standard_Boolean BOPTools_AlgoTools::IsSplitToReverse(const TopoDS_Edge& aEF1,
1142 const TopoDS_Edge& aEF2,
1143 Handle(BOPInt_Context)& theContext)
1145 Standard_Boolean bRet, bIsDegenerated;
1147 bRet=Standard_False;
1148 bIsDegenerated=(BRep_Tool::Degenerated(aEF1) ||
1149 BRep_Tool::Degenerated(aEF2));
1150 if (bIsDegenerated) {
1155 TopAbs_Orientation aOrE, aOrSp;
1156 Handle(Geom_Curve)aC1, aC2;
1158 aC2=BRep_Tool::Curve(aEF2, a, b);
1159 aC1=BRep_Tool::Curve(aEF1, a, b);
1162 aOrE=aEF2.Orientation();
1163 aOrSp=aEF1.Orientation();
1168 Standard_Real aT1, aT2, aScPr;
1172 aT1=BOPTools_AlgoTools2D::IntermediatePoint(a, b);
1174 BOPTools_AlgoTools2D::EdgeTangent(aEF1, aT1, aV1);
1177 theContext->ProjectPointOnEdge(aP, aEF2, aT2);
1179 BOPTools_AlgoTools2D::EdgeTangent(aEF2, aT2, aV2);
1188 //=======================================================================
1191 //=======================================================================
1192 Standard_Boolean BOPTools_AlgoTools::IsHole(const TopoDS_Shape& aW,
1193 const TopoDS_Shape& aFace)
1195 Standard_Boolean bIsHole;
1196 Standard_Integer i, aNbS;
1197 Standard_Real aT1, aT2, aS;
1198 Standard_Real aU1, aU2, aU, dU;
1199 Standard_Real aX1, aY1, aX0, aY0;
1200 TopAbs_Orientation aOr;
1202 gp_Pnt2d aP2D0, aP2D1;
1203 Handle(Geom2d_Curve) aC2D;
1204 TopoDS_Face aF, aFF;
1205 TopoDS_Iterator aItW;
1207 bIsHole=Standard_False;
1209 aF=(*(TopoDS_Face *)(&aFace));
1211 aFF.Orientation(TopAbs_FORWARD);
1214 aItW.Initialize(aW);
1215 for (; aItW.More(); aItW.Next()) {
1216 const TopoDS_Edge& aE=(*(TopoDS_Edge *)(&aItW.Value()));
1217 aOr=aE.Orientation();
1218 if (!(aOr==TopAbs_FORWARD ||
1219 aOr==TopAbs_REVERSED)) {
1223 aC2D=BRep_Tool::CurveOnSurface(aE, aFF, aT1, aT2);
1224 if (aC2D.IsNull()) {
1228 BRepAdaptor_Curve2d aBAC2D(aE, aFF);
1229 aNbS=Geom2dInt_Geom2dCurveTool::NbSamples(aBAC2D);
1234 dU=(aT2-aT1)/(Standard_Real)(aNbS-1);
1238 if (aOr==TopAbs_REVERSED) {
1245 aC2D->D0(aU, aP2D0);
1246 for(i=2; i<=aNbS; i++) {
1248 aC2D->D0(aU, aP2D1);
1249 aP2D0.Coord(aX0, aY0);
1250 aP2D1.Coord(aX1, aY1);
1252 aS=aS+(aY0+aY1)*(aX1-aX0);
1256 }//for (; aItW.More(); aItW.Next()) {
1261 //=======================================================================
1262 // function: MakeContainer
1264 //=======================================================================
1265 void BOPTools_AlgoTools::MakeContainer(const TopAbs_ShapeEnum theType,
1271 case TopAbs_COMPOUND:{
1273 aBB.MakeCompound(aC);
1278 case TopAbs_COMPSOLID:{
1279 TopoDS_CompSolid aCS;
1280 aBB.MakeCompSolid(aCS);
1286 TopoDS_Solid aSolid;
1287 aBB.MakeSolid(aSolid);
1294 TopoDS_Shell aShell;
1295 aBB.MakeShell(aShell);
1302 aBB.MakeWire(aWire);
1311 //=======================================================================
1312 // function: MakePCurve
1314 //=======================================================================
1315 void BOPTools_AlgoTools::MakePCurve(const TopoDS_Edge& aE,
1316 const TopoDS_Face& aF1,
1317 const TopoDS_Face& aF2,
1318 const IntTools_Curve& aIC,
1319 const Standard_Boolean bPC1,
1320 const Standard_Boolean bPC2)
1324 Standard_Real aTolE, aT1, aT2, aOutFirst, aOutLast, aOutTol;
1325 Handle(Geom2d_Curve) aC2D, aC2DA, aC2Dx1;
1328 Standard_Boolean bPC;
1330 aTolE=BRep_Tool::Tolerance(aE);
1332 const Handle(Geom_Curve)& aC3DE=BRep_Tool::Curve(aE, aT1, aT2);
1333 Handle(Geom_TrimmedCurve)aC3DETrim=new Geom_TrimmedCurve(aC3DE, aT1, aT2);
1335 for (i=0; i<2; ++i) {
1336 bPC = !i ? bPC1 : bPC2;
1343 aC2Dx1=aIC.FirstCurve2d();
1347 aC2Dx1=aIC.SecondCurve2d();
1350 aFFWD.Orientation(TopAbs_FORWARD);
1353 if (aC2D.IsNull()) {
1354 BOPTools_AlgoTools2D::BuildPCurveForEdgeOnFace(aE, aFFWD);
1355 BOPTools_AlgoTools2D::CurveOnSurface(aE, aFFWD, aC2D,
1356 aOutFirst, aOutLast,
1360 if (aC3DE->IsPeriodic()) {
1361 BOPTools_AlgoTools2D::AdjustPCurveOnFace(aFFWD, aT1, aT2, aC2D, aC2DA);
1364 BOPTools_AlgoTools2D::AdjustPCurveOnFace(aFFWD, aC3DETrim, aC2D, aC2DA);
1367 aBB.UpdateEdge(aE, aC2DA, aFFWD, aTolE);
1368 //BRepLib::SameParameter(aE);
1370 BRepLib::SameParameter(aE);
1372 //=======================================================================
1373 // function: MakeEdge
1375 //=======================================================================
1376 void BOPTools_AlgoTools::MakeEdge(const IntTools_Curve& theIC,
1377 const TopoDS_Vertex& theV1,
1378 const Standard_Real theT1,
1379 const TopoDS_Vertex& theV2,
1380 const Standard_Real theT2,
1381 const Standard_Real theTolR3D,
1384 Standard_Real aTolV;
1387 BOPTools_AlgoTools::MakeSectEdge (theIC, theV1, theT1, theV2, theT2, theE);
1389 aBB.UpdateEdge(theE, theTolR3D);
1391 aTolV=BRep_Tool::Tolerance(theV1);
1392 if (aTolV<theTolR3D) {
1393 aBB.UpdateVertex(theV1, theTolR3D);
1396 aTolV=BRep_Tool::Tolerance(theV2);
1397 if (aTolV<theTolR3D) {
1398 aBB.UpdateVertex(theV2, theTolR3D);
1401 //=======================================================================
1402 // function: ComputeVV
1404 //=======================================================================
1405 Standard_Integer BOPTools_AlgoTools::ComputeVV(const TopoDS_Vertex& aV1,
1407 const Standard_Real aTolP2)
1409 Standard_Real aTolV1, aTolSum, aTolSum2, aD2;
1412 aTolV1=BRep_Tool::Tolerance(aV1);
1414 aTolSum=aTolV1+aTolP2;
1415 aTolSum2=aTolSum*aTolSum;
1417 aP1=BRep_Tool::Pnt(aV1);
1419 aD2=aP1.SquareDistance(aP2);
1425 //=======================================================================
1426 // function: ComputeVV
1428 //=======================================================================
1429 Standard_Integer BOPTools_AlgoTools::ComputeVV(const TopoDS_Vertex& aV1,
1430 const TopoDS_Vertex& aV2)
1432 Standard_Real aTolV1, aTolV2, aTolSum, aTolSum2, aD2;
1435 aTolV1=BRep_Tool::Tolerance(aV1);
1436 aTolV2=BRep_Tool::Tolerance(aV2);
1437 aTolSum=aTolV1+aTolV2;
1438 aTolSum2=aTolSum*aTolSum;
1440 aP1=BRep_Tool::Pnt(aV1);
1441 aP2=BRep_Tool::Pnt(aV2);
1443 aD2=aP1.SquareDistance(aP2);
1449 //=======================================================================
1450 // function: MakeVertex
1452 //=======================================================================
1453 void BOPTools_AlgoTools::MakeVertex(BOPCol_ListOfShape& aLV,
1454 TopoDS_Vertex& aVnew)
1456 Standard_Integer aNb;
1457 Standard_Real aTi, aDi, aDmax;
1459 gp_XYZ aXYZ(0.,0.,0.), aXYZi;
1460 BOPCol_ListIteratorOfListOfShape aIt;
1464 aIt.Initialize(aLV);
1465 for (; aIt.More(); aIt.Next()) {
1466 TopoDS_Vertex& aVi=*((TopoDS_Vertex*)(&aIt.Value()));
1467 aPi=BRep_Tool::Pnt(aVi);
1472 aXYZ.Divide((Standard_Real)aNb);
1476 aIt.Initialize(aLV);
1477 for (; aIt.More(); aIt.Next()) {
1478 TopoDS_Vertex& aVi=*((TopoDS_Vertex*)(&aIt.Value()));
1479 aPi=BRep_Tool::Pnt(aVi);
1480 aTi=BRep_Tool::Tolerance(aVi);
1481 aDi=aP.SquareDistance(aPi);
1490 aBB.MakeVertex (aVnew, aP, aDmax);
1493 //=======================================================================
1494 //function : GetEdgeOnFace
1496 //=======================================================================
1497 Standard_Boolean BOPTools_AlgoTools::GetEdgeOnFace(const TopoDS_Edge& theE1,
1498 const TopoDS_Face& theF2,
1501 Standard_Boolean bFound;
1502 TopoDS_Iterator aItF, aItW;
1504 bFound=Standard_False;
1506 aItF.Initialize(theF2);
1507 for (; aItF.More(); aItF.Next()) {
1508 const TopoDS_Shape& aW=aItF.Value();
1509 aItW.Initialize(aW);
1510 for (; aItW.More(); aItW.Next()) {
1511 const TopoDS_Shape& aE=aItW.Value();
1512 if (aE.IsSame(theE1)) {
1513 theE2=(*(TopoDS_Edge*)(&aE));
1521 //=======================================================================
1522 //function : FindFacePairs
1524 //=======================================================================
1525 Standard_Boolean FindFacePairs (const TopoDS_Edge& theE,
1526 const BOPCol_ListOfShape& thLF,
1527 BOPTools_ListOfCoupleOfShape& theLCFF,
1528 Handle(BOPInt_Context)& theContext)
1530 Standard_Boolean bFound;
1531 Standard_Integer i, aNbCEF;
1532 TopAbs_Orientation aOr, aOrC = TopAbs_FORWARD;
1533 BOPCol_MapOfShape aMFP;
1534 TopoDS_Face aF1, aF2;
1535 TopoDS_Edge aEL, aE1;
1536 BOPCol_ListIteratorOfListOfShape aItLF;
1537 BOPTools_CoupleOfShape aCEF, aCFF;
1538 BOPTools_ListOfCoupleOfShape aLCEF, aLCEFx;
1539 BOPTools_ListIteratorOfListOfCoupleOfShape aIt;
1541 bFound=Standard_True;
1544 aItLF.Initialize(thLF);
1545 for (; aItLF.More(); aItLF.Next()) {
1546 const TopoDS_Face& aFL=(*(TopoDS_Face*)(&aItLF.Value()));
1548 bFound=BOPTools_AlgoTools::GetEdgeOnFace(theE, aFL, aEL);
1550 return bFound; // it can not be so
1553 aCEF.SetShape1(aEL);
1554 aCEF.SetShape2(aFL);
1558 aNbCEF=aLCEF.Extent();
1563 aIt.Initialize(aLCEF);
1564 for (i=0; aIt.More(); aIt.Next(), ++i) {
1565 const BOPTools_CoupleOfShape& aCSx=aIt.Value();
1566 const TopoDS_Shape& aEx=aCSx.Shape1();
1567 const TopoDS_Shape& aFx=aCSx.Shape2();
1569 aOr=aEx.Orientation();
1572 aOrC=TopAbs::Reverse(aOr);
1573 aE1=(*(TopoDS_Edge*)(&aEx));
1574 aF1=(*(TopoDS_Face*)(&aFx));
1580 aLCEFx.Append(aCSx);
1586 BOPTools_AlgoTools::GetFaceOff(aE1, aF1, aLCEFx, aF2, theContext);
1588 aCFF.SetShape1(aF1);
1589 aCFF.SetShape2(aF2);
1590 theLCFF.Append(aCFF);
1599 aIt.Initialize(aLCEFx);
1600 for (; aIt.More(); aIt.Next()) {
1601 const BOPTools_CoupleOfShape& aCSx=aIt.Value();
1602 const TopoDS_Shape& aFx=aCSx.Shape2();
1603 if (!aMFP.Contains(aFx)) {
1608 aNbCEF=aLCEF.Extent();
1613 //=======================================================================
1614 //function : AngleWithRef
1616 //=======================================================================
1617 Standard_Real AngleWithRef(const gp_Dir& theD1,
1618 const gp_Dir& theD2,
1619 const gp_Dir& theDRef)
1621 Standard_Real aCosinus, aSinus, aBeta, aHalfPI, aScPr;
1626 const gp_XYZ& aXYZ1=theD1.XYZ();
1627 const gp_XYZ& aXYZ2=theD2.XYZ();
1628 aXYZ=aXYZ1.Crossed(aXYZ2);
1629 aSinus=aXYZ.Modulus();
1630 aCosinus=theD1*theD2;
1634 aBeta=aHalfPI*(1.-aCosinus);
1637 aBeta=2.*M_PI-aHalfPI*(3.+aCosinus);
1640 aScPr=aXYZ.Dot(theDRef.XYZ());
1646 //=======================================================================
1649 //=======================================================================
1650 Standard_Real fsqrt(Standard_Real val)
1658 u.tmp -= 1<<23; /* Remove last bit so 1.0 gives 1.0 */
1659 /* tmp is now an approximation to logbase2(val) */
1660 u.tmp >>= 1; /* divide by 2 */
1661 u.tmp += 1<<29; /* add 64 to exponent: (e+127)/2 =(e/2)+63, */
1662 /* that represents (e/2)-64 but we want e/2 */
1663 return (double)u.val;
1666 //=======================================================================
1667 // function: IsBlockInOnFace
1669 //=======================================================================
1670 Standard_Boolean BOPTools_AlgoTools::IsBlockInOnFace (const IntTools_Range& aShrR,
1671 const TopoDS_Face& aF,
1672 const TopoDS_Edge& aE1,
1673 Handle(BOPInt_Context)& aContext)
1675 Standard_Boolean bFlag;
1676 Standard_Real f1, l1, ULD, VLD;
1680 aShrR.Range(f1, l1);
1681 Standard_Real dt=0.0075, k;//dt=0.001, k;
1687 BOPTools_AlgoTools::PointOnEdge(aE1, f1, aP11);
1689 GeomAPI_ProjectPointOnSurf& aProjector=aContext->ProjPS(aF);
1690 aProjector.Perform(aP11);
1692 bFlag=aProjector.IsDone();
1697 aProjector.LowerDistanceParameters(ULD, VLD);
1698 aP2D.SetCoord(ULD, VLD);
1700 bFlag=aContext->IsPointInOnFace (aF, aP2D);
1707 BOPTools_AlgoTools::PointOnEdge(aE1, l1, aP12);
1709 aProjector.Perform(aP12);
1711 bFlag=aProjector.IsDone();
1716 aProjector.LowerDistanceParameters(ULD, VLD);
1717 aP2D.SetCoord(ULD, VLD);
1719 bFlag=aContext->IsPointInOnFace (aF, aP2D);
1725 // Treatment intemediate
1726 Standard_Real m1, aTolF, aTolE, aTol, aDist;
1727 m1=IntTools_Tools::IntermediatePoint(f1, l1);
1728 BOPTools_AlgoTools::PointOnEdge(aE1, m1, aP12);
1730 aProjector.Perform(aP12);
1732 bFlag=aProjector.IsDone();
1737 aTolE=BRep_Tool::Tolerance(aE1);
1738 aTolF=BRep_Tool::Tolerance(aF);
1740 aDist=aProjector.LowerDistance();
1742 return Standard_False;
1745 aProjector.LowerDistanceParameters(ULD, VLD);
1746 aP2D.SetCoord(ULD, VLD);
1748 bFlag=aContext->IsPointInOnFace (aF, aP2D);
1756 //=======================================================================
1757 //function : IsMicroEdge
1759 //=======================================================================
1760 Standard_Boolean BOPTools_AlgoTools::IsMicroEdge(const TopoDS_Edge& aE,
1761 const Handle(BOPInt_Context)& aCtx)
1763 Standard_Boolean bRet;
1764 Standard_Integer iErr;
1765 Standard_Real aT1, aT2, aTmp;
1766 Handle(Geom_Curve) aC3D;
1767 TopoDS_Vertex aV1, aV2;
1769 bRet=(BRep_Tool::Degenerated(aE) ||
1770 !BRep_Tool::IsGeometric(aE));
1775 aC3D=BRep_Tool::Curve(aE, aT1, aT2);
1776 TopExp::Vertices(aE, aV1, aV2);
1777 aT1=BRep_Tool::Parameter(aV1, aE);
1778 aT2=BRep_Tool::Parameter(aV2, aE);
1785 BOPInt_ShrunkRange aSR;
1786 aSR.SetData(aE, aT1, aT2, aV1, aV2, aCtx);
1788 iErr=aSR.ErrorStatus();
1794 //=======================================================================
1795 //function : GetFaceDir
1796 //purpose : Get binormal direction for the face in the point aP
1797 //=======================================================================
1798 void GetFaceDir(const TopoDS_Edge& aE,
1799 const TopoDS_Face& aF,
1801 const Standard_Real aT,
1802 const gp_Dir& aDTgt,
1805 Handle(BOPInt_Context)& theContext,
1806 GeomAPI_ProjectPointOnSurf& aProjPL)
1808 BOPTools_AlgoTools3D::GetNormalToFaceOnEdge(aE, aF, aT, aDN);
1809 if (aF.Orientation()==TopAbs_REVERSED){
1815 if (!FindPointInFace(aE, aF, aP, aDB, aPx, theContext, aProjPL)) {
1816 BOPTools_AlgoTools3D::GetApproxNormalToFaceOnEdge(aE, aF, aT, aPx, aDN, theContext);
1817 aProjPL.Perform(aPx);
1818 aPx = aProjPL.NearestPoint();
1819 gp_Vec aVec(aP, aPx);
1820 aDB.SetXYZ(aVec.XYZ());
1824 //=======================================================================
1825 //function : FindPointInFace
1826 //purpose : Find a point in the face in direction of <aDB>
1827 //=======================================================================
1828 Standard_Boolean FindPointInFace(const TopoDS_Edge& aE,
1829 const TopoDS_Face& aF,
1833 Handle(BOPInt_Context)& theContext,
1834 GeomAPI_ProjectPointOnSurf& aProjPL)
1836 Standard_Integer aNbItMax;
1837 Standard_Real aDt, aDtMin, aTolE, aTolF, aDist;
1838 Standard_Boolean bRet;
1840 BRepAdaptor_Surface aBAS;
1842 bRet = Standard_False;
1843 aTolE = BRep_Tool::Tolerance(aE);
1844 aTolF = BRep_Tool::Tolerance(aF);
1845 aDt = 2*(aTolE+aTolF);
1846 aBAS.Initialize(aF, Standard_False);
1851 GeomAbs_SurfaceType aSType=aBAS.GetType();
1853 case GeomAbs_Cylinder:
1854 aR = aBAS.Cylinder().Radius();
1857 aR = aBAS.Cone().RefRadius();
1859 case GeomAbs_Sphere:
1860 aR = aBAS.Sphere().Radius();
1863 aR = aBAS.Torus().MinorRadius();
1865 case GeomAbs_SurfaceOfRevolution:
1874 else if (aR > 100.) {
1882 GeomAPI_ProjectPointOnSurf& aProj=theContext->ProjPS(aF);
1886 aP1.SetCoord(aP.X()+aDt*aDB.X(),
1888 aP.Z()+aDt*aDB.Z());
1891 if (!aProj.IsDone()) {
1894 aPOut = aProj.NearestPoint();
1895 aDist = aProj.LowerDistance();
1897 aProjPL.Perform(aPOut);
1898 aPOut = aProjPL.NearestPoint();
1900 gp_Vec aV(aP, aPOut);
1901 aDB.SetXYZ(aV.XYZ());
1902 } while (aDist>Precision::Angular() && --aNbItMax);
1904 bRet = aDist < Precision::Angular();