Added osgVolume .osg plugin

src/osgPlugins/osgVolume/Volume.cpp

@@ -0,0 +1,56 @@
+#include <osgVolume/Volume>
+
+#include <iostream>
+#include <string>
+
+#include <osg/Vec3>
+#include <osg/Vec4>
+#include <osg/io_utils>
+
+#include <osgDB/ReadFile>
+#include <osgDB/Registry>
+#include <osgDB/Input>
+#include <osgDB/Output>
+#include <osgDB/ParameterOutput>
+
+bool Volume_readLocalData(osg::Object &obj, osgDB::Input &fr);
+bool Volume_writeLocalData(const osg::Object &obj, osgDB::Output &fw);
+
+osgDB::RegisterDotOsgWrapperProxy Volume_Proxy
+(
+    new osgVolume::Volume,
+    "Volume",
+    "Object Node Volume Group",
+    Volume_readLocalData,
+    Volume_writeLocalData
+);
+
+bool Volume_readLocalData(osg::Object& obj, osgDB::Input &fr)
+{
+    osgVolume::Volume& volume = static_cast<osgVolume::Volume&>(obj);
+
+    bool itrAdvanced = false;
+
+    osg::ref_ptr<osg::Object> readObject = fr.readObjectOfType(osgDB::type_wrapper<osgVolume::VolumeTechnique>());
+    if (readObject.valid())
+    {
+        volume.setVolumeTechnique(dynamic_cast<osgVolume::VolumeTechnique*>(readObject.get()));
+        itrAdvanced = true;
+    }
+
+    return itrAdvanced;
+}
+
+bool Volume_writeLocalData(const osg::Object& obj, osgDB::Output& fw)
+{
+    const osgVolume::Volume& volume = static_cast<const osgVolume::Volume&>(obj);
+
+    osg::notify(osg::NOTICE)<<"Volume write"<<std::endl;
+
+    if (volume.getVolumeTechnique())
+    {
+        fw.writeObject(*volume.getVolumeTechnique());
+    }    
+
+    return true;
+}