+
+ // Main Axis vector
+ Handle(GEOM_Function) aRefVectorMaj = aCI.GetVectorMajor();
+ if (!aRefVectorMaj.IsNull()) {
+ TopoDS_Shape aShapeVec = aRefVectorMaj->GetValue();
+ if (aShapeVec.ShapeType() != TopAbs_EDGE) {
+ Standard_ConstructionError::Raise
+ ("Ellipse creation aborted: invalid major axis vector argument, must be a vector or an edge");
+ }
+ TopoDS_Edge anE = TopoDS::Edge(aShapeVec);
+ TopoDS_Vertex V1, V2;
+ TopExp::Vertices(anE, V1, V2, Standard_True);
+ if (!V1.IsNull() && !V2.IsNull()) {
+ gp_Vec aVM (BRep_Tool::Pnt(V1), BRep_Tool::Pnt(V2));
+ if (aVM.Magnitude() < gp::Resolution()) {
+ Standard_ConstructionError::Raise
+ ("Ellipse creation aborted: major axis vector of zero length is given");
+ }
+ if (aV.IsParallel(aVM, Precision::Angular())) {
+ Standard_ConstructionError::Raise
+ ("Ellipse creation aborted: normal and major axis vectors are parallel");
+ }
+ // Axes defined with main axis vector
+ anAxes = gp_Ax2 (aP, aV, aVM);
+ }
+ }
+ // Radiuses
+ double radiusMaj = aCI.GetRMajor();
+ double radiusMin = aCI.GetRMinor();
+ if ( radiusMaj < radiusMin )
+ Standard_ConstructionError::Raise
+ ("Ellipse creation aborted: a major radius is less that a minor one");
+ if ( radiusMin < 0.0 )
+ Standard_ConstructionError::Raise
+ ("Ellipse creation aborted: raduis must be positive");
+