Moved some stuff from Array to SubArray.

library/PolyVoxCore/include/PolyVoxImpl/SubArray.h

@@ -0,0 +1,114 @@
+#pragma region License
+/*******************************************************************************
+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. 	
+*******************************************************************************/
+#pragma endregion
+
+#ifndef __PolyVox_SubArray_H__
+#define __PolyVox_SubArray_H__
+
+#pragma region Headers
+#include "PolyVoxImpl/CPlusPlusZeroXSupport.h"
+#pragma endregion
+
+namespace PolyVox
+{
+	template <uint32_t noOfDims, typename ElementType> class Array;
+
+	template <uint32_t noOfDims, typename ElementType>
+	class SubArray
+	{
+		friend class Array<noOfDims+1, ElementType>;
+		friend class SubArray<noOfDims+1, ElementType>;
+
+	public:
+		SubArray<noOfDims-1, ElementType> operator [](uint32_t uIndex)
+		{
+			assert(uIndex<m_pDimensions[0]);
+			return
+				SubArray<noOfDims-1, ElementType>(&m_pElements[uIndex*m_pOffsets[0]],
+				m_pDimensions+1, m_pOffsets+1);
+		}
+
+		const SubArray<noOfDims-1, ElementType> operator [](uint32_t uIndex) const
+		{
+			assert(uIndex<m_pDimensions[0]);
+			return
+				SubArray<noOfDims-1, ElementType>(&m_pElements[uIndex*m_pOffsets[0]],
+				m_pDimensions+1, m_pOffsets+1);
+		}
+
+	private:
+		SubArray<noOfDims, ElementType>(ElementType * pElements, uint32_t * pDimensions, uint32_t * pOffsets)
+			:m_pElements(pElements)
+			,m_pDimensions(pDimensions)
+			,m_pOffsets(pOffsets)
+			,m_uNoOfElements(0)
+		{
+		} 
+
+		uint32_t * m_pDimensions;
+		uint32_t * m_pOffsets;
+		uint32_t m_uNoOfElements;
+		ElementType * m_pElements;
+	};
+
+	template <typename ElementType>
+	class SubArray<1, ElementType>
+	{
+		friend class Array<2, ElementType>;
+		friend class SubArray<2, ElementType>;
+
+	public:
+		ElementType & operator [] (uint32_t uIndex)
+		{
+			assert(uIndex<m_pDimensions[0]);
+			return m_pElements[uIndex];
+		}
+
+		const ElementType & operator [] (uint32_t uIndex) const
+		{
+			assert(uIndex<m_pDimensions[0]);
+			return m_pElements[uIndex];
+		}
+		
+	private:
+		SubArray<1, ElementType>(ElementType * pElements, uint32_t * pDimensions, uint32_t * /*pOffsets*/)
+			:m_pDimensions(pDimensions)
+			,m_pElements(pElements)			
+		{
+		}
+
+		uint32_t * m_pDimensions;
+		ElementType * m_pElements;
+	};
+
+	template <typename ElementType>
+	class SubArray<0, ElementType>
+	{
+		//Zero dimensional subarray is meaningless.
+	};
+}//namespace PolyVox
+
+#include "SubArray.inl"
+
+#endif //__PolyVox_SubArray_H__