/**********************************************************************
 *
 *	FILE:			Impostor.cpp
 *
 *	DESCRIPTION:	Read/Write osg::Impostor in binary format to disk.
 *
 *	CREATED BY:		Auto generated by iveGenerator
 *					and later modified by Rune Schmidt Jensen.
 *
 *	HISTORY:		Created 16.4.2003
 *
 *	Copyright 2003 VR-C
 **********************************************************************/

#include "Exception.h"
#include "Impostor.h"
#include "LOD.h"

using namespace ive;

void Impostor::write(DataOutputStream* out){
	// Write Impostor's identification.
	out->writeInt(IVEIMPOSTOR);
	// If the osg class is inherited by any other class we should also write this to file.
	osg::LOD*  lod = dynamic_cast<osg::LOD*>(this);
	if(lod){
		((ive::LOD*)(lod))->write(out);
	}
	else
		throw Exception("Impostor::write(): Could not cast this osg::Impostor to an osg::LOD.");
	// Write Impostor's properties.
	out->writeFloat(getImpostorThreshold());
}

void Impostor::read(DataInputStream* in){
	// Peek on Impostor's identification.
	int id = in->peekInt();
	if(id == IVEIMPOSTOR){
		// Read Impostor's identification.
		id = in->readInt();
		// If the osg class is inherited by any other class we should also read this from file.
		osg::LOD*  lod = dynamic_cast<osg::LOD*>(this);
		if(lod){
			((ive::LOD*)(lod))->read(in);
		}
		else
			throw Exception("Impostor::read(): Could not cast this osg::Impostor to an osg::LOD.");
		// Read Impostor's properties
		setImpostorThreshold(in->readFloat());
	}
	else{
		throw Exception("Impostor::read(): Expected Impostor identification.");
	}
}
