Added support for PagedLOD node into .ive format and added support for

Enabled texture object reuse by setting an expiry delay in the TextureObjectManager
of 10 seconds - done for both osgDB::DatabasePager and TXP plugin.

src/osgPlugins/ive/PagedLOD.cpp

@@ -0,0 +1,120 @@
+/**********************************************************************
+ *
+ *	FILE:			LOD.cpp
+ *
+ *	DESCRIPTION:	Read/Write osg::LOD in binary format to disk.
+ *
+ *	CREATED BY:		Auto generated by iveGenerate
+ *					and later modified by Rune Schmidt Jensen.
+ *
+ *	HISTORY:		Created 24.3.2003
+ *
+ *	Copyright 2003 VR-C
+ **********************************************************************/
+
+#include "Exception.h"
+#include "PagedLOD.h"
+#include "Node.h"
+
+using namespace ive;
+
+void PagedLOD::write(DataOutputStream* out){
+	// Write LOD's identification.
+	out->writeInt(IVEPAGEDLOD);
+	// If the osg class is inherited by any other class we should also write this to file.
+
+        osg::Node* node = dynamic_cast<osg::Node*>(this);
+        if(node){
+            static_cast<ive::Node*>(node)->write(out);
+        }
+        else
+		throw Exception("PagedLOD::write(): Could not cast this osg::PagedLOD to an osg::LOD.");
+
+        unsigned int numChildrenToWriteOut = 0;
+
+        int i;
+        for(i=0; i<(int)getNumFileNames();++i)
+        {
+            if (getFileName(i).empty())
+            {
+                ++numChildrenToWriteOut;
+            }
+        }
+
+	// Write Group's properties.
+        // Write number of children.
+        out->writeInt(numChildrenToWriteOut);
+        // Write children.
+        for(i=0; i<(int)getNumChildren(); i++){
+            if (getFileName(i).empty())
+            {
+                osg::Node* child = getChild(i);
+                out->writeNode(child);
+            }
+        }
+
+        // LOD properties
+	// Write centermode
+	out->writeInt(getCenterMode());
+	out->writeVec3(getCenter());
+        // Write rangelist
+	int size = getNumRanges();
+	out->writeInt(size);
+	for(i=0;i<size;i++){
+		out->writeFloat(getMinRange(i));
+		out->writeFloat(getMaxRange(i));
+	}
+
+
+        // PagedLOD properties
+	size = getNumFileNames();
+	out->writeInt(size);
+	for(i=0;i<size;i++){
+		out->writeString(getFileName(i));
+	}
+}
+
+void PagedLOD::read(DataInputStream* in){
+	// Peek on LOD's identification.
+	int id = in->peekInt();
+	if(id == IVEPAGEDLOD){
+		// Read LOD's identification.
+		id = in->readInt();
+		// If the osg class is inherited by any other class we should also read this from file.
+                osg::Node* node = dynamic_cast<osg::Node*>(this);
+                if(node){
+                    ((ive::Node*)(node))->read(in);
+                }
+                else
+                    throw Exception("Group::read(): Could not cast this osg::Group to an osg::Node.");
+
+
+                // Read groups properties.
+                // Read number of children.
+                int size = in->readInt();
+                // Read children.
+                for(int i=0; i<size; i++)
+                {
+                    addChild(in->readNode());            
+                }
+
+		// Read centermode
+		setCenterMode((osg::LOD::CenterMode)in->readInt());
+		setCenter(in->readVec3());
+		// Read rangelist
+		size = in->readInt();
+		for(int i=0;i<size;i++){
+			float min = in->readFloat();
+			float max = in->readFloat();
+			setRange(i, min, max);
+		}
+
+		size = in->readInt();
+		for(int i=0;i<size;i++){
+			setFileName(i, in->readString());
+		}
+	}
+	else{
+		throw Exception("LOD::read(): Expected LOD identification.");
+	}
+}