Oculus VR (Rift) support

Input device and shaders for supporting the Oculus Rift.

Engine/source/platform/input/oculusVR/oculusVRUtil.h

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+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#ifndef _OCULUSVRUTIL_H_
+#define _OCULUSVRUTIL_H_
+
+#include "math/mPoint2.h"
+#include "math/mMatrix.h"
+#include "OVR.h"
+
+namespace OculusVRUtil
+{
+   /// Convert an OVR sensor's rotation to a Torque 3D matrix
+   void convertRotation(const F32 inRotMat[4][4], MatrixF& outRotation);
+
+   /// Convert an OVR sensor's rotation to Torque 3D Euler angles (in radians)
+   void convertRotation(OVR::Quatf& inRotation, EulerF& outRotation);
+
+   /// Calcualte a sensor's rotation as if it were a thumb stick axis
+   void calculateAxisRotation(const MatrixF& inRotation, const F32& maxAxisRadius, Point2F& outRotation);
+}
+
+#endif   // _OCULUSVRUTIL_H_