+
+bool GeomAPI_Edge::isClosed() const
+{
+ const TopoDS_Shape& aShape = const_cast<GeomAPI_Edge*>(this)->impl<TopoDS_Shape>();
+ if (aShape.IsNull())
+ return false;
+ double aFirst, aLast;
+ Handle(Geom_Curve) aCurve = BRep_Tool::Curve((const TopoDS_Edge&)aShape, aFirst, aLast);
+ if (aCurve.IsNull() || !aCurve->IsPeriodic())
+ return false;
+ aLast += aLast > aFirst ? -aCurve->Period() : aCurve->Period();;
+
+ return fabs(aFirst - aLast) < 1.e-9;
+}
+
+bool GeomAPI_Edge::isDegenerated() const
+{
+ const TopoDS_Shape& aShape = const_cast<GeomAPI_Edge*>(this)->impl<TopoDS_Shape>();
+ if (aShape.IsNull() || aShape.ShapeType() != TopAbs_EDGE)
+ return false;
+ return BRep_Tool::Degenerated(TopoDS::Edge(aShape));
+}
+
+void GeomAPI_Edge::setFirstPointTolerance(const double theTolerance)
+{
+ TopoDS_Edge anEdge = impl<TopoDS_Edge>();
+ TopoDS_Vertex aVFirst, aVLast;
+ TopExp::Vertices(anEdge, aVFirst, aVLast);
+ BRep_Builder().UpdateVertex(aVFirst, theTolerance);
+}
+
+void GeomAPI_Edge::setLastPointTolerance(const double theTolerance)
+{
+ TopoDS_Edge anEdge = impl<TopoDS_Edge>();
+ TopoDS_Vertex aVFirst, aVLast;
+ TopExp::Vertices(anEdge, aVFirst, aVLast);
+ BRep_Builder().UpdateVertex(aVLast, theTolerance);
+}
+
+double GeomAPI_Edge::firstPointTolerance() const
+{
+ TopoDS_Edge anEdge = impl<TopoDS_Edge>();
+ TopoDS_Vertex aVFirst, aVLast;
+ TopExp::Vertices(anEdge, aVFirst, aVLast);
+ return BRep_Tool::Tolerance(aVFirst);
+}
+
+double GeomAPI_Edge::lastPointTolerance() const
+{
+ TopoDS_Edge anEdge = impl<TopoDS_Edge>();
+ TopoDS_Vertex aVFirst, aVLast;
+ TopExp::Vertices(anEdge, aVFirst, aVLast);
+ return BRep_Tool::Tolerance(aVLast);
+}
+
+GeomPointPtr GeomAPI_Edge::middlePoint() const
+{
+ GeomPointPtr aMiddlePoint;
+
+ const TopoDS_Edge& anEdge = impl<TopoDS_Edge>();
+ if (anEdge.IsNull())
+ return aMiddlePoint;
+ double aFirst, aLast;
+ Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, aFirst, aLast);
+ if (aCurve.IsNull())
+ return aMiddlePoint;
+
+ static const int NB_POINTS = 3;
+ GeomAdaptor_Curve aCurveAdaptor(aCurve, aFirst, aLast);
+ GCPnts_UniformAbscissa anAlgo(aCurveAdaptor, NB_POINTS);
+ if (anAlgo.IsDone()) {
+ gp_Pnt aPnt = aCurveAdaptor.Value(anAlgo.Parameter(2));
+ aMiddlePoint = GeomPointPtr(new GeomAPI_Pnt(aPnt.X(), aPnt.Y(), aPnt.Z()));
+ }
+ return aMiddlePoint;
+}