From Wang Rui, osgText serializers and support for PagedLOD+ProxyNode

src/osgWrappers/serializers/osg/ProxyNode.cpp

@@ -34,6 +34,49 @@ static bool writeFileNames( osgDB::OutputStream& os, const osg::ProxyNode& node
     return true;
 }
 
+// _children
+static bool checkChildren( const osg::ProxyNode& node )
+{
+    return node.getNumChildren()>0;
+}
+
+static bool readChildren( osgDB::InputStream& is, osg::ProxyNode& node )
+{
+    unsigned int size = 0; is >> size >> osgDB::BEGIN_BRACKET;
+    for ( unsigned int i=0; i<size; ++i )
+    {
+        osg::Node* child = dynamic_cast<osg::Node*>( is.readObject() );
+        if ( child ) node.addChild( child );
+    }
+    is >> osgDB::END_BRACKET;
+    return true;
+}
+
+static bool writeChildren( osgDB::OutputStream& os, const osg::ProxyNode& node )
+{
+    unsigned int size=node.getNumFileNames(), dynamicLoadedSize=0;
+    for ( unsigned int i=0; i<size; ++i )
+    {
+        if ( !node.getFileName(i).empty() )
+            dynamicLoadedSize++;
+    }
+    
+    unsigned int realSize = size-dynamicLoadedSize; os << realSize;
+    if ( realSize>0 )
+    {
+        os << osgDB::BEGIN_BRACKET << std::endl;
+        for ( unsigned int i=0; i<size; ++i )
+        {
+            if ( !node.getFileName(i).empty() ) continue;
+            if ( i<node.getNumChildren() )
+                os << node.getChild(i);
+        }
+        os << osgDB::END_BRACKET;
+    }
+    os << std::endl;
+    return true;
+}
+
 // _userDefinedCenter, _radius
 static bool checkUserCenter( const osg::ProxyNode& node )
 {
@@ -62,6 +105,7 @@ REGISTER_OBJECT_WRAPPER( ProxyNode,
     // Note: osg::Group is not in the list to prevent recording dynamic loaded children
     
     ADD_USER_SERIALIZER( FileNames );  // _filenameList
+    ADD_USER_SERIALIZER( Children );  // _children (which are not loaded from external)
     ADD_STRING_SERIALIZER( DatabasePath, "" );  // _databasePath
     
     BEGIN_ENUM_SERIALIZER( LoadingExternalReferenceMode, LOAD_IMMEDIATELY );