Issue #2811: Update content of Object node on creation moment

[modules/shaper.git] / src / GeomAlgoAPI / GeomAlgoAPI_Filling.cpp

diff --git a/src/GeomAlgoAPI/GeomAlgoAPI_Filling.cpp b/src/GeomAlgoAPI/GeomAlgoAPI_Filling.cpp
index 338409aa5b32d38e8a04e18b0b94759f94ec8e8b..3609b06ff66406806f0eb8d8678fd1cbc129c277 100644 (file)
--- a/src/GeomAlgoAPI/GeomAlgoAPI_Filling.cpp
+++ b/src/GeomAlgoAPI/GeomAlgoAPI_Filling.cpp
@@ -97,13 +97,23 @@ void GeomAlgoAPI_Filling::buildByEdges()
 
   // a 'tolerance' is used to compare 2 knots
   aSection.Perform(Precision::PConfusion());
-  Handle(GeomFill_Line) aLine = new GeomFill_Line((int)aCurves.size());
+  int aNbCurves = (int)aCurves.size();
+  Handle(GeomFill_Line) aLine = new GeomFill_Line(aNbCurves);
+
+  // check myMaxDegree >= aCurves.size() - 1 to be able to interpolate a surface
+  if (myMaxDegree + 1 < aNbCurves) {
+    myError = "Unable to interpolate surface,"
+       " Max deg + 1 should be greater or equal than number of sections.";
+    return;
+  }
 
   // perform filling by sections
   GeomFill_AppSurf anAppSurf(myMinDegree, myMaxDegree, myTol3D, myTol2D, myNbIter);
   anAppSurf.Perform(aLine, aSection);
-  if (!anAppSurf.IsDone())
+  if (!anAppSurf.IsDone()) {
+    myError = "Approximation algorithm failed.";
     return;
+  }
 
   // build calculated surface
   Standard_Integer UDegree, VDegree, NbUPoles, NbVPoles, NbUKnots, NbVKnots;