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diff --git a/public/tier2/camerautils.h b/public/tier2/camerautils.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: A set of utilities to deal with camera transforms
+//
+//===========================================================================//
+
+#ifndef CAMERAUTILS_H
+#define CAMERAUTILS_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "tier2/tier2.h"
+#include "Color.h"
+
+//-----------------------------------------------------------------------------
+// Forward declarations
+//-----------------------------------------------------------------------------
+class Vector;
+class QAngle;
+class IMaterial;
+struct matrix3x4_t;
+class VMatrix;
+
+
+//-----------------------------------------------------------------------------
+// Camera state
+// TODO: Maybe this should be a base class of CViewSetup?
+//-----------------------------------------------------------------------------
+struct Camera_t
+{
+	Vector m_origin;
+	QAngle m_angles;
+	float m_flFOV;
+	float m_flZNear;
+	float m_flZFar;
+};
+
+
+//-----------------------------------------------------------------------------
+// accessors for generated matrices
+//-----------------------------------------------------------------------------
+void ComputeViewMatrix( VMatrix *pWorldToCamera, const Camera_t& camera );
+void ComputeViewMatrix( matrix3x4_t *pWorldToCamera, const Camera_t& camera );
+void ComputeProjectionMatrix( VMatrix *pCameraToProjection, const Camera_t& camera, int width, int height );
+
+
+//-----------------------------------------------------------------------------
+// Computes the screen space position given a screen size
+//-----------------------------------------------------------------------------
+void ComputeScreenSpacePosition( Vector2D *pScreenPosition, const Vector &vecWorldPosition, 
+	const Camera_t &camera, int width, int height );
+
+
+#endif // CAMERAUTILS_H
+