Added OpenDX writer from Randall Hopper.

src/osgPlugins/dx/ReaderWriterDX.h

@@ -0,0 +1,47 @@
+// This plugin writes an IBM Data Explorer (aka OpenDX) native file.
+// (c) Randall Hopper, 2002.
+//
+// For details on the OpenDX visualization tool, its use, and its file format,
+//   refer to:
+//
+//   http://www.opendx.org/
+//   http://www.opendx.org/support.html#docs
+//   http://www.research.ibm.com/dx/
+//   http://ftp.cs.umt.edu/DX/
+//
+// SUPPORTED  : Refer to DXWriter.cpp
+// UNSUPPORTED: Refer to DXWriter.cpp
+//
+
+// ReaderWriterDX.h
+
+#ifndef __OSG_READER_WRITER_DX_H
+#define __OSG_READER_WRITER_DX_H
+
+#include <string>
+#include <osg/Object>
+#include <osg/Node>
+#include <osgDB/Registry>
+#include <osgDB/FileNameUtils>
+#include <osgDB/ReaderWriter>
+
+
+class ReaderWriterDX : public osgDB::ReaderWriter
+{
+ public:
+
+  virtual const char* className() { return "OpenDX Writer"; }
+  virtual bool acceptsExtension( const std::string &extension )
+    { return osgDB::equalCaseInsensitive( extension, "dx" ); }
+
+  virtual WriteResult writeObject( const osg::Object &obj,
+                                   const std::string &filename,
+                                   const Options     *options = NULL );
+
+  virtual WriteResult writeNode  ( const osg::Node   &node,
+                                   const std::string &filename,
+                                   const Options     *options = NULL );
+
+};
+
+#endif // __READER_WRITER_DX_H