simpler code for plane surfaces

Geo/GModelIO_OCC.cpp

@@ -1110,19 +1110,11 @@ bool OCC_Internals::addPlaneSurface(int &tag, const std::vector<int> &wireTags)
     Msg::Error("Plane surface requires at least one line loop");
     return false;
   }
-  else if(wires.size() == 1){
-    BRepBuilderAPI_MakeFace f(wires[0]);
-    f.Build();
-    if(!f.IsDone()){
-      Msg::Error("Could not create face");
-      return false;
-    }
-    result = f.Face();
-  }
-  else{
+
   try{
     BRepBuilderAPI_MakeFace f(wires[0]);
     for(unsigned int i = 1; i < wires.size(); i++){
+      // holes
       TopoDS_Wire w = wires[i];
       w.Orientation(TopAbs_REVERSED);
       f.Add(w);
@@ -1144,7 +1136,7 @@ bool OCC_Internals::addPlaneSurface(int &tag, const std::vector<int> &wireTags)
     Msg::Error("OpenCASCADE exception %s", err.GetMessageString());
     return false;
   }
-  }
+
   if(tag < 0) tag = getMaxTag(2) + 1;
   bind(result, tag, true);
   return true;
@@ -1174,9 +1166,7 @@ bool OCC_Internals::addSurfaceFilling(int &tag, int wireTag)
       if(_edgeTag.IsBound(edge))
         unbind(edge, _edgeTag.Find(edge), true);
     }
-    // TODO: add optional point constraints using
-    // f.Add(gp_Pnt(x, y, z);
-
+    // TODO: add optional point constraints using f.Add(gp_Pnt(x, y, z);
     f.Build();
     if(!f.IsDone()){
       Msg::Error("Could not build surface filling");