Fix #2310 Update FeatureModelLayer on the fly failed

src/osgEarth/FeatureModelGraph.cpp

@@ -705,7 +705,7 @@ FeatureModelGraph::open()
             _lodmap.resize(lod + 1, 0L);
             _lodmap[lod] = level;
 
-            OE_INFO << LC << _session->getFeatureSource()->getName()
+            OE_DEBUG << LC << _session->getFeatureSource()->getName()
                 << ": No levels specified, so adding one for LOD=" << lod 
                 << ", maxRange=" << maxRange.get()
                 << std::endl;

src/osgEarth/FeatureModelLayer.cpp

@@ -111,7 +111,12 @@ void FeatureModelLayer::dirty()
     // create the scene graph
     if (isOpen())
     {
-        create();
+        if (getFeatureSource())
+        {
+            // tell the source to recompute its profile, etc.
+            getFeatureSource()->dirty();
+            create();
+        }
     }
 }
 

src/osgEarth/OGRFeatureSource

@@ -123,6 +123,10 @@ namespace osgEarth
 
         virtual void buildSpatialIndex();
 
+        //! Call this if the underlying geometry changes and we need to
+        //! recompute the profile.
+        void dirty() override;
+
     protected:
 
         virtual ~OGRFeatureSource();

src/osgEarth/OGRFeatureSource.cpp

@@ -698,6 +698,35 @@ OGRFeatureSource::openImplementation()
     return Status::NoError;
 }
 
+void
+OGRFeatureSource::dirty()
+{
+    if (_profile.valid())
+    {
+        setFeatureProfile(new FeatureProfile(_profile->getExtent()));
+    }
+    else if (_geometry.valid())
+    {
+        // if the user specified explicit geometry, use that and the calculated
+        // extent of the geometry to derive a profile.
+        GeoExtent ex;
+        if (_profile.valid())
+        {
+            ex = GeoExtent(_profile->getSRS(), _geometry->getBounds());
+        }
+
+        if (!ex.isValid())
+        {
+            // default to WGS84 Lat/Long
+            //osg::ref_ptr<const Profile> gg = Profile::create(Profile::GLOBAL_GEODETIC);
+            //ex = gg->getExtent();
+            ex = GeoExtent(SpatialReference::get("wgs84"), _geometry->getBounds());
+        }
+
+        setFeatureProfile(new FeatureProfile(ex));
+    }
+}
+
 const Status&
 OGRFeatureSource::create(const FeatureProfile* profile,
                          const FeatureSchema& schema,