/*******************************************************************************
* The MIT License (MIT)
*
* Copyright (c) 2015 David Williams and Matthew Williams
*
* 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 __PolyVox_BaseVolume_H__
#define __PolyVox_BaseVolume_H__

#include "Region.h"
#include "Vector.h"

#include <limits>

namespace PolyVox
{
	/// The BaseVolume class provides common functionality and an interface for other volume classes to implement. You should not try to create an instance of this
	/// class directly. Instead you should use RawVolume or PagedVolume.
	////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
	/// More details to come...
	////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
	template <typename _VoxelType>
	class BaseVolume
	{
	public:
		typedef _VoxelType VoxelType;

#ifndef SWIG
		template <typename DerivedVolumeType>
		class Sampler
		{
		public:
			Sampler(DerivedVolumeType* volume);
			~Sampler();

			Vector3DInt32 getPosition(void) const;
			inline VoxelType getVoxel(void) const;

			void setPosition(const Vector3DInt32& v3dNewPos);
			void setPosition(int32_t xPos, int32_t yPos, int32_t zPos);
			inline bool setVoxel(VoxelType tValue);

			void movePositiveX(void);
			void movePositiveY(void);
			void movePositiveZ(void);

			void moveNegativeX(void);
			void moveNegativeY(void);
			void moveNegativeZ(void);

			inline VoxelType peekVoxel1nx1ny1nz(void) const;
			inline VoxelType peekVoxel1nx1ny0pz(void) const;
			inline VoxelType peekVoxel1nx1ny1pz(void) const;
			inline VoxelType peekVoxel1nx0py1nz(void) const;
			inline VoxelType peekVoxel1nx0py0pz(void) const;
			inline VoxelType peekVoxel1nx0py1pz(void) const;
			inline VoxelType peekVoxel1nx1py1nz(void) const;
			inline VoxelType peekVoxel1nx1py0pz(void) const;
			inline VoxelType peekVoxel1nx1py1pz(void) const;

			inline VoxelType peekVoxel0px1ny1nz(void) const;
			inline VoxelType peekVoxel0px1ny0pz(void) const;
			inline VoxelType peekVoxel0px1ny1pz(void) const;
			inline VoxelType peekVoxel0px0py1nz(void) const;
			inline VoxelType peekVoxel0px0py0pz(void) const;
			inline VoxelType peekVoxel0px0py1pz(void) const;
			inline VoxelType peekVoxel0px1py1nz(void) const;
			inline VoxelType peekVoxel0px1py0pz(void) const;
			inline VoxelType peekVoxel0px1py1pz(void) const;

			inline VoxelType peekVoxel1px1ny1nz(void) const;
			inline VoxelType peekVoxel1px1ny0pz(void) const;
			inline VoxelType peekVoxel1px1ny1pz(void) const;
			inline VoxelType peekVoxel1px0py1nz(void) const;
			inline VoxelType peekVoxel1px0py0pz(void) const;
			inline VoxelType peekVoxel1px0py1pz(void) const;
			inline VoxelType peekVoxel1px1py1nz(void) const;
			inline VoxelType peekVoxel1px1py0pz(void) const;
			inline VoxelType peekVoxel1px1py1pz(void) const;

		protected:

			DerivedVolumeType* mVolume;

			//The current position in the volume
			int32_t mXPosInVolume;
			int32_t mYPosInVolume;
			int32_t mZPosInVolume;
		};
#endif // SWIG

	public:
		/// Gets a voxel at the position given by <tt>x,y,z</tt> coordinates
		VoxelType getVoxel(int32_t uXPos, int32_t uYPos, int32_t uZPos) const;
		/// Gets a voxel at the position given by a 3D vector
		VoxelType getVoxel(const Vector3DInt32& v3dPos) const;

		/// Sets the voxel at the position given by <tt>x,y,z</tt> coordinates
		void setVoxel(int32_t uXPos, int32_t uYPos, int32_t uZPos, VoxelType tValue);
		/// Sets the voxel at the position given by a 3D vector
		void setVoxel(const Vector3DInt32& v3dPos, VoxelType tValue);

		/// Calculates approximatly how many bytes of memory the volume is currently using.
		uint32_t calculateSizeInBytes(void);

	protected:
		/// Constructor for creating a volume.
		BaseVolume();

		/// Copy constructor
		BaseVolume(const BaseVolume& rhs);

		/// Destructor
		~BaseVolume();

		/// Assignment operator
		BaseVolume& operator=(const BaseVolume& rhs);
	};
}

#include "BaseVolume.inl"
#include "BaseVolumeSampler.inl"

#endif //__PolyVox_BaseVolume_H__