120 lines
3.9 KiB
C++
120 lines
3.9 KiB
C++
#pragma region License
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/******************************************************************************
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This file is part of the PolyVox library
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Copyright (C) 2006 David Williams
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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******************************************************************************/
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#pragma endregion
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#ifndef __PolyVox_Volume_H__
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#define __PolyVox_Volume_H__
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#pragma region Headers
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#include "PolyVoxImpl/Block.h"
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#include "PolyVoxForwardDeclarations.h"
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#include "PolyVoxImpl/CPlusPlusZeroXSupport.h"
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#include <limits>
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#include <map>
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#include <vector>
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#pragma endregion
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namespace PolyVox
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{
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template <typename VoxelType>
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class Volume
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{
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//Make VolumeIterator a friend
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friend class VolumeIterator<VoxelType>;
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public:
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Volume(uint16_t uWidth, uint16_t uHeight, uint16_t uDepth, uint16_t uBlockSideLength = 64);
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//Volume(const Volume& rhs);
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~Volume();
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//Volume& operator=(const Volume& rhs);
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Region getEnclosingRegion(void) const;
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uint16_t getWidth(void) const;
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uint16_t getHeight(void) const;
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uint16_t getDepth(void) const;
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uint16_t getLongestSideLength(void) const;
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uint16_t getShortestSideLength(void) const;
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float getDiagonalLength(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 tidyUpMemory(uint32_t uNoOfBlocksToProcess = (std::numeric_limits<uint32_t>::max)());
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bool isRegionHomogenous(const Region& region);
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private:
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POLYVOX_SHARED_PTR< Block<VoxelType> > getHomogenousBlock(VoxelType tHomogenousValue) const;
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std::vector< POLYVOX_SHARED_PTR< Block<VoxelType> > > m_pBlocks;
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std::vector<bool> m_vecBlockIsPotentiallyHomogenous;
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//Note: We were once storing weak_ptr's in this map, so that the blocks would be deleted once they
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//were not being referenced by anyone else. However, this made it difficult to know when a block was
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//shared. A call to shared_ptr::unique() from within setVoxel was not sufficient as weak_ptr's did
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//not contribute to the reference count. Instead we store shared_ptr's here, and check if they
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//are used by anyone else (i.e are non-unique) when we tidy the volume.
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static std::map<VoxelType, POLYVOX_SHARED_PTR< Block<VoxelType> > > m_pHomogenousBlock;
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uint32_t m_uNoOfBlocksInVolume;
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uint16_t m_uWidthInBlocks;
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uint16_t m_uHeightInBlocks;
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uint16_t m_uDepthInBlocks;
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uint16_t m_uWidth;
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uint8_t m_uWidthPower;
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uint16_t m_uHeight;
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uint8_t m_uHeightPower;
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uint16_t m_uDepth;
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uint8_t m_uDepthPower;
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uint8_t m_uBlockSideLengthPower;
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uint16_t m_uBlockSideLength;
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uint16_t m_uLongestSideLength;
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uint16_t m_uShortestSideLength;
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float m_fDiagonalLength;
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uint32_t m_uCurrentBlockForTidying;
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};
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//Required for the static member
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template <class VoxelType> std::map<VoxelType, POLYVOX_SHARED_PTR< Block<VoxelType> > > Volume<VoxelType>::m_pHomogenousBlock;
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//Some handy typedefs
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typedef Volume<float> FloatVolume;
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typedef Volume<uint8_t> UInt8Volume;
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typedef Volume<uint16_t> UInt16Volume;
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}
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#include "Volume.inl"
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#endif
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