122 lines
4.4 KiB
C++
122 lines
4.4 KiB
C++
/*******************************************************************************
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Copyright (c) 2005-2013 David Williams and Matthew 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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#include "PolyVoxCore/Impl/Utility.h"
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namespace PolyVox
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{
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template <typename VoxelType>
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UncompressedBlock<VoxelType>::UncompressedBlock(uint16_t uSideLength)
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:m_uBlockLastAccessed(0)
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,m_bDataModified(true)
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,m_tData(0)
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,m_uSideLength(0)
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,m_uSideLengthPower(0)
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{
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// Compute the side length
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m_uSideLength = uSideLength;
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m_uSideLengthPower = logBase2(uSideLength);
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// Allocate the data
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const uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
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m_tData = new VoxelType[uNoOfVoxels];
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}
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template <typename VoxelType>
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UncompressedBlock<VoxelType>::~UncompressedBlock()
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{
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delete[] m_tData;
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m_tData = 0;
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}
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template <typename VoxelType>
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VoxelType* UncompressedBlock<VoxelType>::getData(void) const
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{
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return m_tData;
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}
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template <typename VoxelType>
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uint32_t UncompressedBlock<VoxelType>::getDataSizeInBytes(void) const
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{
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return m_uSideLength * m_uSideLength * m_uSideLength * sizeof(VoxelType);
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}
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template <typename VoxelType>
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VoxelType UncompressedBlock<VoxelType>::getVoxel(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos) const
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{
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// This code is not usually expected to be called by the user, with the exception of when implementing paging
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// of uncompressed data. It's a performance critical code path so we use asserts rather than exceptions.
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POLYVOX_ASSERT(uXPos < m_uSideLength, "Supplied position is outside of the block");
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POLYVOX_ASSERT(uYPos < m_uSideLength, "Supplied position is outside of the block");
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POLYVOX_ASSERT(uZPos < m_uSideLength, "Supplied position is outside of the block");
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POLYVOX_ASSERT(m_tData, "No uncompressed data - block must be decompressed before accessing voxels.");
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return m_tData
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[
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uXPos +
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uYPos * m_uSideLength +
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uZPos * m_uSideLength * m_uSideLength
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];
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}
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template <typename VoxelType>
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VoxelType UncompressedBlock<VoxelType>::getVoxel(const Vector3DUint16& v3dPos) const
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{
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return getVoxel(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ());
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}
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template <typename VoxelType>
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void UncompressedBlock<VoxelType>::setVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tValue)
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{
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// This code is not usually expected to be called by the user, with the exception of when implementing paging
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// of uncompressed data. It's a performance critical code path so we use asserts rather than exceptions.
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POLYVOX_ASSERT(uXPos < m_uSideLength, "Supplied position is outside of the block");
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POLYVOX_ASSERT(uYPos < m_uSideLength, "Supplied position is outside of the block");
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POLYVOX_ASSERT(uZPos < m_uSideLength, "Supplied position is outside of the block");
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POLYVOX_ASSERT(m_tData, "No uncompressed data - block must be decompressed before accessing voxels.");
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m_tData
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[
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uXPos +
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uYPos * m_uSideLength +
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uZPos * m_uSideLength * m_uSideLength
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] = tValue;
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this->m_bDataModified = true;
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}
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template <typename VoxelType>
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void UncompressedBlock<VoxelType>::setVoxelAt(const Vector3DUint16& v3dPos, VoxelType tValue)
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{
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setVoxelAt(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), tValue);
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}
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template <typename VoxelType>
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uint32_t UncompressedBlock<VoxelType>::calculateSizeInBytes(void)
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{
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// Returns the size of this class plus the size of the uncompressed data.
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uint32_t uSizeInBytes = sizeof(UncompressedBlock<VoxelType>) + (m_uSideLength * m_uSideLength * m_uSideLength * sizeof(VoxelType));
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return uSizeInBytes;
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}
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}
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