diff -r 000000000000 -r bde4ae8d615e os/graphics/m3g/m3gcore11/inc/m3g_camera.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/graphics/m3g/m3gcore11/inc/m3g_camera.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,73 @@
+/*
+* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Camera interface
+*
+*/
+
+#ifndef __M3G_CAMERA_H__
+#define __M3G_CAMERA_H__
+
+/*!
+ * \internal
+ * \file 
+ * \brief Camera interface
+ */
+
+#include "m3g_gl.h"
+#include "m3g_node.h"
+
+/*!
+ * \internal
+ * \brief Camera node instance data
+ */
+struct M3GCameraImpl
+{
+	Node node;
+    
+    M3Gint	 projType;   
+    M3Gfloat heightFov;
+    M3Gfloat aspect;
+    M3Gfloat clipNear;
+    M3Gfloat clipFar;
+
+    Matrix	projMatrix;
+    Vec4 frustumPlanes[6];
+    
+    M3Gbool frustumPlanesValid;
+    M3Gbool zeroViewVolume;
+};
+
+/*----------------------------------------------------------------------
+ * Internal functions
+ *--------------------------------------------------------------------*/
+
+static void m3gInitCamera(Interface *m3g, Camera *camera);
+static void m3gApplyProjection(const Camera *camera);
+
+static const Vec4 *m3gFrustumPlanes(const Camera *camera);
+static const Matrix *m3gProjectionMatrix(const Camera *camera);
+
+M3G_INLINE static M3Gbool m3gValidProjection(const Camera *camera)
+{
+    if (camera->zeroViewVolume) {
+        M3G_LOG1(M3G_LOG_WARNINGS,
+                 "Warning: Invalid projection for camera 0x%08X\n",
+                 (unsigned) camera);
+        return M3G_FALSE;
+    }
+    return M3G_TRUE;
+}
+
+
+#endif /*__M3G_CAMERA_H__*/