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[bos #42424] [CEA][FORUM] bug with MinDistance in Geom Module. Old workarounds causing the problem have been abandoned.
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@ -44,6 +44,8 @@
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#include <utilities.h>
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#include <Basics_OCCTVersion.hxx>
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// OCCT Includes
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#include <Bnd_Box.hxx>
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#include <BOPAlgo_CheckerSI.hxx>
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@ -2319,12 +2321,6 @@ Standard_Integer GEOMImpl_IMeasureOperations::ClosestPoints (Handle(GEOM_Object)
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try {
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OCC_CATCH_SIGNALS;
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// skl 30.06.2008
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// additional workaround for bugs 19899, 19908 and 19910 from Mantis
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gp_Pnt P1s, P2s;
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double dist = GEOMUtils::GetMinDistanceSingular(aShape1, aShape2, P1s, P2s);
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bool singularBetter = dist >= 0;
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BRepExtrema_DistShapeShape dst (aShape1, aShape2);
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if (dst.IsDone()) {
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nbSolutions = dst.NbSolution();
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@ -2341,25 +2337,8 @@ Standard_Integer GEOMImpl_IMeasureOperations::ClosestPoints (Handle(GEOM_Object)
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theDoubles->Append(P2.X());
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theDoubles->Append(P2.Y());
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theDoubles->Append(P2.Z());
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Standard_Real Dist = P1.Distance(P2);
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singularBetter = singularBetter && dist < Dist;
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}
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}
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if (singularBetter) {
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if (theDoubles.IsNull()) theDoubles = new TColStd_HSequenceOfReal;
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else theDoubles->Clear();
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nbSolutions = 1;
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theDoubles->Append(P1s.X());
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theDoubles->Append(P1s.Y());
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theDoubles->Append(P1s.Z());
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theDoubles->Append(P2s.X());
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theDoubles->Append(P2s.Y());
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theDoubles->Append(P2s.Z());
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}
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}
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catch (Standard_Failure& aFail) {
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SetErrorCode(aFail.GetMessageString());
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@ -119,112 +119,6 @@
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namespace
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{
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/**
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* This function constructs and returns modified shape from the original one
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* for singular cases. It is used for the method GetMinDistanceSingular.
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*
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* \param theShape the original shape
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* \param theModifiedShape output parameter. The modified shape.
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* \param theAddDist output parameter. The added distance for modified shape.
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* \retval true if the shape is modified; false otherwise.
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*
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* \internal
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*/
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Standard_Boolean ModifyShape(const TopoDS_Shape &theShape,
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TopoDS_Shape &theModifiedShape,
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Standard_Real &theAddDist)
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{
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TopExp_Explorer anExp;
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int nbf = 0;
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theAddDist = 0.;
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theModifiedShape.Nullify();
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for ( anExp.Init( theShape, TopAbs_FACE ); anExp.More(); anExp.Next() ) {
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nbf++;
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theModifiedShape = anExp.Current();
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}
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if(nbf==1) {
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TopoDS_Shape sh = theShape;
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while(sh.ShapeType()==TopAbs_COMPOUND) {
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TopoDS_Iterator it(sh);
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sh = it.Value();
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}
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Handle(Geom_Surface) S = BRep_Tool::Surface(TopoDS::Face(theModifiedShape));
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if( S->IsKind(STANDARD_TYPE(Geom_SphericalSurface)) ||
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S->IsKind(STANDARD_TYPE(Geom_ToroidalSurface)) ||
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S->IsUPeriodic()) {
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const Standard_Boolean isShell =
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(sh.ShapeType()==TopAbs_SHELL || sh.ShapeType()==TopAbs_FACE);
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if ( !isShell && S->IsKind(STANDARD_TYPE(Geom_SphericalSurface)) ) {
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Handle(Geom_SphericalSurface) SS = Handle(Geom_SphericalSurface)::DownCast(S);
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gp_Pnt PC = SS->Location();
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BRep_Builder B;
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TopoDS_Vertex V;
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B.MakeVertex(V,PC,1.e-7);
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theModifiedShape = V;
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theAddDist = SS->Radius();
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return Standard_True;
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}
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if ( !isShell && S->IsKind(STANDARD_TYPE(Geom_ToroidalSurface)) ) {
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Handle(Geom_ToroidalSurface) TS = Handle(Geom_ToroidalSurface)::DownCast(S);
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gp_Ax3 ax3 = TS->Position();
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Handle(Geom_Circle) C = new Geom_Circle(ax3.Ax2(),TS->MajorRadius());
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BRep_Builder B;
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TopoDS_Edge E;
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B.MakeEdge(E,C,1.e-7);
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theModifiedShape = E;
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theAddDist = TS->MinorRadius();
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return Standard_True;
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}
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// non solid case or any periodic surface (Mantis 22454).
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double U1,U2,V1,V2;
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BRepTools::UVBounds(TopoDS::Face(theModifiedShape),U1,U2,V1,V2);
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// end of changes for 020677 (dmv)
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Handle(Geom_RectangularTrimmedSurface) TrS1 =
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new Geom_RectangularTrimmedSurface(S,U1,(U1+U2)/2.,V1,V2);
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Handle(Geom_RectangularTrimmedSurface) TrS2 =
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new Geom_RectangularTrimmedSurface(S,(U1+U2)/2.,U2,V1,V2);
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TopoDS_Shape aMShape;
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TopoDS_Face F1 = BRepBuilderAPI_MakeFace(TrS1, Precision::Confusion());
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TopoDS_Face F2 = BRepBuilderAPI_MakeFace(TrS2, Precision::Confusion());
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if (isShell) {
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BRep_Builder B;
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B.MakeCompound(TopoDS::Compound(aMShape));
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B.Add(aMShape, F1);
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B.Add(aMShape, F2);
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} else {
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// The original shape is a solid.
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BRepBuilderAPI_Sewing aSewing (Precision::Confusion()*10.0);
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aSewing.Add(F1);
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aSewing.Add(F2);
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aSewing.Perform();
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aMShape = aSewing.SewedShape();
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BRep_Builder B;
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TopoDS_Solid aSolid;
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B.MakeSolid(aSolid);
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B.Add(aSolid, aMShape);
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aMShape = aSolid;
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}
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Handle(ShapeFix_Shape) sfs = new ShapeFix_Shape;
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sfs->Init(aMShape);
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sfs->SetPrecision(1.e-6);
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sfs->SetMaxTolerance(1.0);
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sfs->Perform();
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theModifiedShape = sfs->Shape();
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return Standard_True;
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}
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}
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theModifiedShape = theShape;
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return Standard_False;
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}
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void parseWard( const GEOMUtils::LevelsList &theLevelList, std::string &treeStr )
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{
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treeStr.append( "{" );
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@ -836,75 +730,6 @@ Standard_Boolean GEOMUtils::PreciseBoundingBox
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return Standard_True;
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}
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//=======================================================================
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//function : GetMinDistanceSingular
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//purpose :
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//=======================================================================
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double GEOMUtils::GetMinDistanceSingular(const TopoDS_Shape& aSh1,
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const TopoDS_Shape& aSh2,
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gp_Pnt& Ptmp1, gp_Pnt& Ptmp2)
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{
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TopoDS_Shape tmpSh1;
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TopoDS_Shape tmpSh2;
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Standard_Real AddDist1 = 0.;
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Standard_Real AddDist2 = 0.;
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Standard_Boolean IsChange1 = ModifyShape(aSh1, tmpSh1, AddDist1);
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Standard_Boolean IsChange2 = ModifyShape(aSh2, tmpSh2, AddDist2);
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if( !IsChange1 && !IsChange2 )
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return -2.0;
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BRepExtrema_DistShapeShape dst(tmpSh1,tmpSh2);
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if (dst.IsDone()) {
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double MinDist = 1.e9;
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gp_Pnt PMin1, PMin2, P1, P2;
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for (int i = 1; i <= dst.NbSolution(); i++) {
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P1 = dst.PointOnShape1(i);
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P2 = dst.PointOnShape2(i);
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Standard_Real Dist = P1.Distance(P2);
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if (MinDist > Dist) {
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MinDist = Dist;
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PMin1 = P1;
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PMin2 = P2;
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}
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}
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if(MinDist<1.e-7) {
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Ptmp1 = PMin1;
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Ptmp2 = PMin2;
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}
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else {
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gp_Dir aDir(gp_Vec(PMin1,PMin2));
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if( MinDist > (AddDist1+AddDist2) ) {
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Ptmp1 = gp_Pnt( PMin1.X() + aDir.X()*AddDist1,
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PMin1.Y() + aDir.Y()*AddDist1,
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PMin1.Z() + aDir.Z()*AddDist1 );
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Ptmp2 = gp_Pnt( PMin2.X() - aDir.X()*AddDist2,
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PMin2.Y() - aDir.Y()*AddDist2,
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PMin2.Z() - aDir.Z()*AddDist2 );
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return (MinDist - AddDist1 - AddDist2);
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}
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else {
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if( AddDist1 > 0 ) {
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Ptmp1 = gp_Pnt( PMin1.X() + aDir.X()*AddDist1,
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PMin1.Y() + aDir.Y()*AddDist1,
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PMin1.Z() + aDir.Z()*AddDist1 );
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Ptmp2 = Ptmp1;
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}
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else {
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Ptmp2 = gp_Pnt( PMin2.X() - aDir.X()*AddDist2,
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PMin2.Y() - aDir.Y()*AddDist2,
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PMin2.Z() - aDir.Z()*AddDist2 );
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Ptmp1 = Ptmp2;
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}
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}
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}
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double res = MinDist - AddDist1 - AddDist2;
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if(res<0.) res = 0.0;
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return res;
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}
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return -2.0;
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}
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//=======================================================================
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//function : GetMinDistance
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//purpose :
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@ -914,46 +739,7 @@ Standard_Real GEOMUtils::GetMinDistance
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const TopoDS_Shape& theShape2,
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gp_Pnt& thePnt1, gp_Pnt& thePnt2)
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{
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Standard_Real aResult = 1.e9;
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// Issue 0020231: A min distance bug with torus and vertex.
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// Make GetMinDistance() return zero if a sole VERTEX is inside any of SOLIDs
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// which of shapes consists of only one vertex?
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TopExp_Explorer exp1(theShape1,TopAbs_VERTEX), exp2(theShape2,TopAbs_VERTEX);
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TopoDS_Shape V1 = exp1.More() ? exp1.Current() : TopoDS_Shape();
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TopoDS_Shape V2 = exp2.More() ? exp2.Current() : TopoDS_Shape();
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exp1.Next(); exp2.Next();
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if ( exp1.More() ) V1.Nullify();
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if ( exp2.More() ) V2.Nullify();
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// vertex and container of solids
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TopoDS_Shape V = V1.IsNull() ? V2 : V1;
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TopoDS_Shape S = V1.IsNull() ? theShape1 : theShape2;
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if ( !V.IsNull() ) {
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// classify vertex against solids
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gp_Pnt p = BRep_Tool::Pnt( TopoDS::Vertex( V ) );
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for ( exp1.Init( S, TopAbs_SOLID ); exp1.More(); exp1.Next() ) {
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BRepClass3d_SolidClassifier classifier( exp1.Current(), p, 1e-6);
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if ( classifier.State() == TopAbs_IN ) {
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thePnt1 = p;
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thePnt2 = p;
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return 0.0;
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}
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}
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}
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// End Issue 0020231
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// skl 30.06.2008
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// additional workaround for bugs 19899, 19908 and 19910 from Mantis
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#if OCC_VERSION_LARGE < 0x07070000
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aResult = GEOMUtils::GetMinDistanceSingular(theShape1, theShape2, thePnt1, thePnt2);
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#endif
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/*
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if (dist > -1.0) {
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return dist;
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}
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*/
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Standard_Real aResult = -1.0;
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BRepExtrema_DistShapeShape dst (theShape1, theShape2);
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if (dst.IsDone()) {
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@ -964,7 +750,7 @@ Standard_Real GEOMUtils::GetMinDistance
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P2 = dst.PointOnShape2(i);
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Standard_Real Dist = P1.Distance(P2);
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if (aResult < 0 || aResult > Dist) {
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if (aResult < 0 || Dist < aResult ) {
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aResult = Dist;
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thePnt1 = P1;
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thePnt2 = P2;
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@ -181,20 +181,6 @@ namespace GEOMUtils
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*/
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Standard_EXPORT Standard_Boolean PreciseBoundingBox(const TopoDS_Shape &theShape, Bnd_Box &theBox);
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/*!
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* \brief Computes minumal distance between two shapes for singular cases
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* (workaround for bugs 19899, 19908 and 19910 from Mantis).
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*
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* \param aSh1 the first shape
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* \param aSh2 the second shape
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* \param Ptmp1 the output result point on the first shape
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* \param Ptmp2 the output result point on the second shape
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* \retval negative value if it is not a singular case; actual distance for singular case.
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*/
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Standard_EXPORT Standard_Real GetMinDistanceSingular(const TopoDS_Shape& aSh1,
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const TopoDS_Shape& aSh2,
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gp_Pnt& Ptmp1, gp_Pnt& Ptmp2);
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/*!
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* \brief Computes minumal distance between two shapes.
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*
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