- if (!BRepAlgo::IsValid(aShape)) {
- Standard_ConstructionError::Raise("Boolean operation aborted : non valid shape result");
+
+ // as boolean operations always produce compound, lets simplify it
+ // for the case, if it contans only one sub-shape
+ TopTools_ListOfShape listShapeRes;
+ AddSimpleShapes(aShape, listShapeRes);
+ if (listShapeRes.Extent() == 1) {
+ aShape = listShapeRes.First();
+ if (aShape.IsNull()) return 0;
+ }
+
+ // 08.07.2008 skl for bug 19761 from Mantis
+ BRepCheck_Analyzer ana (aShape, Standard_True);
+ ana.Init(aShape);
+ if (!ana.IsValid()) {
+ ShapeFix_ShapeTolerance aSFT;
+ aSFT.LimitTolerance(aShape, Precision::Confusion(),
+ Precision::Confusion(), TopAbs_SHAPE);
+ Handle(ShapeFix_Shape) aSfs = new ShapeFix_Shape(aShape);
+ aSfs->Perform();
+ aShape = aSfs->Shape();
+ ana.Init(aShape);
+ if (!ana.IsValid())
+ Standard_ConstructionError::Raise("Boolean operation aborted : non valid shape result");