82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*******************************************************************************
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Copyright (c) 2005-2009 David Williams
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*******************************************************************************/
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#ifndef __PolyVox_Block_H__
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#define __PolyVox_Block_H__
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#include "PolyVoxForwardDeclarations.h"
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#include <limits>
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#include <vector>
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namespace PolyVox
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{
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template <typename VoxelType>
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class Block
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{
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template <typename LengthType>
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struct RunlengthEntry
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{
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LengthType length;
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VoxelType value;
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//We can parametise the length on anything up to uint32_t.
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//This lets us experiment with the optimal size in the future.
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static uint32_t maxRunlength(void) {return (std::numeric_limits<LengthType>::max)();}
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};
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//Make VolumeSampler a friend
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friend class VolumeSampler<VoxelType>;
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public:
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Block(uint16_t uSideLength = 0);
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uint16_t getSideLength(void) const;
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VoxelType getVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos) const;
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VoxelType getVoxelAt(const Vector3DUint16& v3dPos) const;
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void setVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tValue);
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void setVoxelAt(const Vector3DUint16& v3dPos, VoxelType tValue);
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void fill(VoxelType tValue);
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void initialise(uint16_t uSideLength);
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uint32_t calculateSizeInBytes(void);
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public:
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void compress(void);
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void uncompress(VoxelType* pData);
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std::vector< RunlengthEntry<uint16_t> > m_vecCompressedData;
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VoxelType* m_tUncompressedData;
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uint16_t m_uSideLength;
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uint8_t m_uSideLengthPower;
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bool m_bIsCompressed;
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bool m_bIsUncompressedDataModified;
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uint32_t m_uTimestamp;
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uint32_t m_uUncompressedIndex;
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};
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}
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#include "Block.inl"
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#endif
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