Spatial Query Error

Hello,

I have a serious problem with spatial query in ArcObject.

Code:

                    IRelationalOperator relOperInsideBarriers = (IRelationalOperator) fcInsideBarriers

                    IGeometryBag gbTotalConvexPathSplit = fcUtils.getGeoBag(fcTotalConvexPathSplit);

                    if (relOperInsideBarriers.Crosses(gbTotalConvexPathSplit) == false)

                    {

                        Console.WriteLine("Break");



                        break;

                    }

Code is simple. I update featureclass "fcTotalConvexPathSplit" before this codeblck using other operations, then check 'crossing' with fcInsideBarriers.

fcTotalConvexPathSplit is line, and fcInsideBarriers is polygon.

"relOperInsideBarriers.Crosses(gbTotalConvexPathSplit)" is supposed to return false there is no line in fcTotalConvexPathSplit crosses fcInsideBarriers, right?

But, it return false when there are many number of crossings.

I tried to simplify it, like below

Code:





                    IGeometryBag gbTotalConvexPathSplit = fcUtils.getGeoBag(fcTotalConvexPathSplit);

                    ITopologicalOperator pTopOp = gbTotalConvexPathSplit as ITopologicalOperator;

                    pTopOp.Simplify();

                    IGeometry igTopo = pTopOp as IGeometry;

                    if (relOperInsideBarriers.Crosses(igTopo) == false)

                    {

                        Console.WriteLine("Break");



                        break;

                    }

But result was same. It makes error.

I also tried to use ISpatialFilter, but it made similar error, though it sometimes could produce right result, but otherwise couldn't.

What's going on here. I cannot figure out what the problem is...

Thank you