-osg::Geometry* createOrthQuads(float w, float h, const osg::Matrix& rotate);
-osg::Group* createForest(TreeBin& forest, const osg::Matrix& transform);
+typedef std::list<TreeBin*> SGTreeBinList;
+
+osg::Group* createForest(SGTreeBinList& forestList, const osg::Matrix& transform,
+ const SGReaderWriterOptions* options);