134 lines
3.9 KiB
C++
134 lines
3.9 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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#include "PolyVoxImpl/Utility.h"
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#include "Vector.h"
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#include <cassert>
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#include <cstring> //For memcpy
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#include <limits>
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#include <stdexcept> //for std::invalid_argument
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namespace PolyVox
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{
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template <typename VoxelType>
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RawVolume<VoxelType>::Block::Block(uint16_t uSideLength)
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:m_uSideLength(0)
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,m_uSideLengthPower(0)
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,m_tUncompressedData(0)
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{
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if(uSideLength != 0)
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{
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initialise(uSideLength);
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}
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}
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template <typename VoxelType>
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uint16_t RawVolume<VoxelType>::Block::getSideLength(void) const
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{
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return m_uSideLength;
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}
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template <typename VoxelType>
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VoxelType RawVolume<VoxelType>::Block::getVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos) const
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{
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assert(uXPos < m_uSideLength);
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assert(uYPos < m_uSideLength);
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assert(uZPos < m_uSideLength);
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assert(m_tUncompressedData);
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return m_tUncompressedData
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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 RawVolume<VoxelType>::Block::getVoxelAt(const Vector3DUint16& v3dPos) const
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{
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return getVoxelAt(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ());
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}
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template <typename VoxelType>
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void RawVolume<VoxelType>::Block::setVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tValue)
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{
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assert(uXPos < m_uSideLength);
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assert(uYPos < m_uSideLength);
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assert(uZPos < m_uSideLength);
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assert(m_tUncompressedData);
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m_tUncompressedData
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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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}
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template <typename VoxelType>
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void RawVolume<VoxelType>::Block::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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void RawVolume<VoxelType>::Block::fill(VoxelType tValue)
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{
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const uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
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std::fill(m_tUncompressedData, m_tUncompressedData + uNoOfVoxels, tValue);
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}
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template <typename VoxelType>
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void RawVolume<VoxelType>::Block::initialise(uint16_t uSideLength)
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{
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//Debug mode validation
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assert(isPowerOf2(uSideLength));
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//Release mode validation
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if(!isPowerOf2(uSideLength))
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{
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throw std::invalid_argument("Block side length must be a power of two.");
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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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m_tUncompressedData = new VoxelType[m_uSideLength * m_uSideLength * m_uSideLength];
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RawVolume<VoxelType>::Block::fill(VoxelType());
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}
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template <typename VoxelType>
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uint32_t RawVolume<VoxelType>::Block::calculateSizeInBytes(void)
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{
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uint32_t uSizeInBytes = sizeof(Block);
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uSizeInBytes += sizeof(VoxelType) * m_uSideLength * m_uSideLength * m_uSideLength;
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return uSizeInBytes;
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}
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}
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