- case TopAbs_EDGE:
- {
- TopoDS_Edge aEdge = TopoDS::Edge(aShape);
- Standard_Real aFirst, aLast;
- Handle(Geom_Curve) aCurve = BRep_Tool::Curve(aEdge, aFirst, aLast);
- gp_Pnt aFirstPnt = aCurve->Value(aFirst);
- gp_Pnt aMidPnt = aCurve->Value((aFirst + aLast) / 2.);
- gp_Pnt aLastPnt = aCurve->Value(aLast);
- bool aD1 = myPlane.Distance(aFirstPnt) < Precision::Confusion();
- bool aD2 = myPlane.Distance(aMidPnt) < Precision::Confusion();
- bool aD3 = myPlane.Distance(aLastPnt) < Precision::Confusion();
- return aD1 && aD2 && aD3;
+ } else {
+ if (theOwner->HasSelectable()) {
+ // Check Trihedron sub-objects
+ Handle(SelectMgr_SelectableObject) aSelObj = theOwner->Selectable();
+ Handle(Standard_Type) aType = aSelObj->DynamicType();
+ if (aType == STANDARD_TYPE(AIS_Trihedron)) {
+ Handle(AIS_Trihedron) aTrihedron = Handle(AIS_Trihedron)::DownCast(aSelObj);
+ Handle(AIS_TrihedronOwner) aTrOwner = Handle(AIS_TrihedronOwner)::DownCast(theOwner);
+ if (!aTrOwner.IsNull()) {
+ const Prs3d_DatumParts& aPart = aTrOwner->DatumPart();
+ if (aPart >= Prs3d_DP_XAxis && aPart <= Prs3d_DP_ZAxis) {
+ gp_Ax2 anAxis = aTrihedron->Component()->Ax2();
+ gp_Dir aDir;
+ switch (aPart) {
+ case Prs3d_DP_XAxis:
+ aDir = anAxis.XDirection();
+ break;
+ case Prs3d_DP_YAxis:
+ aDir = anAxis.YDirection();
+ break;
+ case Prs3d_DP_ZAxis:
+ aDir = anAxis.Direction();
+ break;
+ }
+ gp_Lin aLine(aTrihedron->Component()->Location(), aDir);
+ return aPlane.Contains(aLine, Precision::Confusion(), Precision::Angular());
+ }
+ }
+ }
+ // This is not object controlled by the filter
+ aValid = Standard_True;