Added glSissor suppor via new osg::Scissor class.

Added .osg support for osg::Scissor.
Added .ive support for osg::Viewport and osg::Scissor.

src/osgPlugins/ive/Viewport.cpp

@@ -0,0 +1,63 @@
+/**********************************************************************
+ *
+ *	FILE:			Viewport.cpp
+ *
+ *	DESCRIPTION:	Read/Write osg::Viewport in binary format to disk.
+ *
+ *	CREATED BY:		Auto generated by iveGenerated
+ *					and later modified by Rune Schmidt Jensen.
+ *
+ *	HISTORY:		Created 21.3.2003
+ *
+ *	Copyright 2003 VR-C
+ **********************************************************************/
+
+#include "Exception.h"
+#include "Viewport.h"
+#include "Object.h"
+
+using namespace ive;
+
+void Viewport::write(DataOutputStream* out){
+	// Write Viewport's identification.
+	out->writeInt(IVEVIEWPORT);
+	// If the osg class is inherited by any other class we should also write this to file.
+	osg::Object*  obj = dynamic_cast<osg::Object*>(this);
+	if(obj){
+		((ive::Object*)(obj))->write(out);
+	}
+	else
+		throw Exception("Viewport::write(): Could not cast this osg::Viewport to an osg::Object.");
+	// Write Viewport's properties.
+
+	out->writeInt(x());
+	out->writeInt(y());
+	out->writeInt(width());
+	out->writeInt(height());
+}
+
+void Viewport::read(DataInputStream* in){
+	// Peek on Viewport's identification.
+	int id = in->peekInt();
+	if(id == IVEVIEWPORT){
+		// Read Viewport's identification.
+		id = in->readInt();
+		// If the osg class is inherited by any other class we should also read this from file.
+		osg::Object*  obj = dynamic_cast<osg::Object*>(this);
+		if(obj){
+			((ive::Object*)(obj))->read(in);
+		}
+		else
+			throw Exception("Viewport::read(): Could not cast this osg::Viewport to an osg::Object.");
+
+		// Read Viewport's properties
+		x() = (GLenum)in->readInt();
+		y() = (GLenum)in->readInt();
+		width() = (GLenum)in->readInt();
+		height() = (GLenum)in->readInt();
+
+	}
+	else{
+		throw Exception("Viewport::read(): Expected Viewport identification.");
+	}
+}