Moved the ambient occlusion calculation code from Thermite into PolyVox.

library/PolyVoxCore/include/AmbientOcclusionCalculator.h

@@ -0,0 +1,55 @@
+/*******************************************************************************
+Copyright (c) 2005-2009 David Williams
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this software
+    in a product, an acknowledgment in the product documentation would be
+    appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source
+    distribution. 	
+*******************************************************************************/
+
+#ifndef __AmbientOcclusionCalculator_H__
+#define __AmbientOcclusionCalculator_H__
+
+#include "PolyVoxForwardDeclarations.h"
+
+namespace PolyVox
+{
+	template <typename VoxelType>
+	class AmbientOcclusionCalculator
+	{
+	public:
+		AmbientOcclusionCalculator(Volume<VoxelType>* volInput, Array<3, uint8_t>* arrayResult, Region region, float fRayLength);
+		~AmbientOcclusionCalculator();
+
+		void execute(void);
+
+	private:
+		Region m_region;
+		VolumeSampler<VoxelType> m_sampVolume;
+		Volume<VoxelType>* m_volInput;
+		Array<3, uint8_t>* m_arrayResult;
+		float m_fRayLength;
+
+		uint16_t mRandomUnitVectorIndex;
+		uint16_t mRandomVectorIndex;
+		uint16_t mIndexIncreament;
+	};
+}
+
+#include "AmbientOcclusionCalculator.inl"
+
+#endif //__AmbientOcclusionCalculator_H__