public Envelope Intersection(Envelope otherEnv)
{
Geometry a = this.GetGeometry();
Geometry b = otherEnv.GetGeometry();
Geometry intersection = a.Intersection(b);
if (intersection == null)
{
return(null);
}
else
{
Envelope e = new Envelope();
intersection.GetEnvelope(e);
return(e);
}
}