From 87a2a282be5463edd7f0b4dbd9370a65858f4dae Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Mon, 16 Aug 2004 13:54:40 +0000
Subject: [PATCH] From Michael Gronager, addition of NodeCallback support in
 .osg format.

---
 VisualStudio/osgPlugins/osg/dot_osg.dsp |  4 ++
 src/osgPlugins/osg/GNUmakefile          |  1 +
 src/osgPlugins/osg/NodeCallback.cpp     | 56 +++++++++++++++++++++++++
 3 files changed, 61 insertions(+)
 create mode 100644 src/osgPlugins/osg/NodeCallback.cpp

diff --git a/VisualStudio/osgPlugins/osg/dot_osg.dsp b/VisualStudio/osgPlugins/osg/dot_osg.dsp
index c2784b4ae..7dad7ac30 100755
--- a/VisualStudio/osgPlugins/osg/dot_osg.dsp
+++ b/VisualStudio/osgPlugins/osg/dot_osg.dsp
@@ -232,6 +232,10 @@ SOURCE=..\..\..\src\osgPlugins\osg\Node.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\osgPlugins\osg\NodeCallback.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\src\osgPlugins\osg\Object.cpp
 # End Source File
 # Begin Source File
diff --git a/src/osgPlugins/osg/GNUmakefile b/src/osgPlugins/osg/GNUmakefile
index 5675e2415..18c44d67d 100644
--- a/src/osgPlugins/osg/GNUmakefile
+++ b/src/osgPlugins/osg/GNUmakefile
@@ -35,6 +35,7 @@ CXXFILES =\
         Matrix.cpp\
         MatrixTransform.cpp\
         Node.cpp\
+        NodeCallback.cpp\
         Object.cpp\
         OccluderNode.cpp\
         PagedLOD.cpp\
diff --git a/src/osgPlugins/osg/NodeCallback.cpp b/src/osgPlugins/osg/NodeCallback.cpp
new file mode 100644
index 000000000..c01d98781
--- /dev/null
+++ b/src/osgPlugins/osg/NodeCallback.cpp
@@ -0,0 +1,56 @@
+#include <osg/Notify>
+
+#include <osg/NodeCallback>
+
+#include <osgDB/Registry>
+#include <osgDB/Input>
+#include <osgDB/Output>
+
+using namespace osg;
+using namespace osgDB;
+
+bool  NodeCallback_readLocalData(osg::Object &obj, osgDB::Input &fr);
+bool  NodeCallback_writeLocalData(const osg::Object &obj, osgDB::Output &fw); // register the read and write functions with the osgDB::Registry.
+
+osgDB::RegisterDotOsgWrapperProxy  NodeCallback_Proxy
+(
+    new NodeCallback,
+    "NodeCallback",
+    "Object NodeCallback",
+    &NodeCallback_readLocalData,
+    &NodeCallback_writeLocalData
+);
+
+bool NodeCallback_readLocalData(osg::Object &obj, osgDB::Input &fr)
+{
+    NodeCallback& nc = dynamic_cast<NodeCallback&>(obj);
+    if (!(&nc)) return false;
+
+    bool itrAdvanced = false;
+
+    static osg::ref_ptr<NodeCallback> s_nc = new NodeCallback;
+    osg::ref_ptr<osg::Object> object = fr.readObjectOfType(*s_nc);
+    if (object.valid())
+    {
+        NodeCallback* ncc = dynamic_cast<NodeCallback*>(object.get());
+        if (ncc) nc.setNestedCallback(ncc);
+        itrAdvanced = true;
+    }
+
+    return itrAdvanced;
+}
+
+bool NodeCallback_writeLocalData(const osg::Object &obj, osgDB::Output &fw)
+{
+    const NodeCallback* nc = dynamic_cast<const NodeCallback*>(&obj);
+    if (!nc) return false;
+
+    NodeCallback* nnc = (NodeCallback*) nc;
+
+    if (nnc->getNestedCallback())
+    {
+        fw.writeObject(*(nnc->getNestedCallback()));
+    }
+
+    return true;
+}