442 lines
21 KiB
C++
442 lines
21 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 "PolyVoxCore/Impl/ErrorHandling.h"
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namespace PolyVox
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{
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////////////////////////////////////////////////////////////////////////////////
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/// This constructor creates a volume with a fixed size which is specified as a parameter.
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/// \param regValid Specifies the minimum and maximum valid voxel positions.
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/// \param uBlockSideLength The size of the block to use within the volume
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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SimpleVolume<VoxelType>::SimpleVolume(const Region& regValid, uint16_t uBlockSideLength)
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:BaseVolume<VoxelType>(regValid)
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{
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//Create a volume of the right size.
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initialise(regValid,uBlockSideLength);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// This function should never be called. Copying volumes by value would be expensive, and we want to prevent users from doing
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/// it by accident (such as when passing them as paramenters to functions). That said, there are times when you really do want to
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/// make a copy of a volume and in this case you should look at the Volumeresampler.
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///
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/// \sa VolumeResampler
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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SimpleVolume<VoxelType>::SimpleVolume(const SimpleVolume<VoxelType>& /*rhs*/)
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{
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POLYVOX_THROW(not_implemented, "Volume copy constructor not implemented for performance reasons.");
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}
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////////////////////////////////////////////////////////////////////////////////
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/// Destroys the volume
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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SimpleVolume<VoxelType>::~SimpleVolume()
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{
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delete[] m_pBlocks;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// This function should never be called. Copying volumes by value would be expensive, and we want to prevent users from doing
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/// it by accident (such as when passing them as paramenters to functions). That said, there are times when you really do want to
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/// make a copy of a volume and in this case you should look at the Volumeresampler.
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///
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/// \sa VolumeResampler
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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SimpleVolume<VoxelType>& SimpleVolume<VoxelType>::operator=(const SimpleVolume<VoxelType>& /*rhs*/)
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{
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POLYVOX_THROW(not_implemented, "Volume assignment operator not implemented for performance reasons.");
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}
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////////////////////////////////////////////////////////////////////////////////
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/// This version of the function requires the wrap mode to be specified as a
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/// template parameter, which can provide better performance.
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/// \param uXPos The \c x position of the voxel
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/// \param uYPos The \c y position of the voxel
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/// \param uZPos The \c z position of the voxel
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/// \tparam eWrapMode Specifies the behaviour when the requested position is outside of the volume.
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/// \param tBorder The border value to use if the wrap mode is set to 'Border'.
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/// \return The voxel value
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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template <WrapMode eWrapMode>
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VoxelType SimpleVolume<VoxelType>::getVoxel(int32_t uXPos, int32_t uYPos, int32_t uZPos, VoxelType tBorder) const
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{
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// Simply call through to the real implementation
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return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<eWrapMode>(), tBorder);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// This version of the function requires the wrap mode to be specified as a
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/// template parameter, which can provide better performance.
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/// \param uXPos The \c x position of the voxel
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/// \param uYPos The \c y position of the voxel
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/// \param uZPos The \c z position of the voxel
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/// \tparam eWrapMode Specifies the behaviour when the requested position is outside of the volume.
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/// \param tBorder The border value to use if the wrap mode is set to 'Border'.
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/// \return The voxel value
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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template <WrapMode eWrapMode>
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VoxelType SimpleVolume<VoxelType>::getVoxel(const Vector3DInt32& v3dPos, VoxelType tBorder) const
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{
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// Simply call through to the real implementation
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return getVoxel<eWrapMode>(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), tBorder);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// This version of the function is provided so that the wrap mode does not need
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/// to be specified as a template parameter, as it may be confusing to some users.
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/// \param uXPos The \c x position of the voxel
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/// \param uYPos The \c y position of the voxel
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/// \param uZPos The \c z position of the voxel
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/// \param eWrapMode Specifies the behaviour when the requested position is outside of the volume.
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/// \param tBorder The border value to use if the wrap mode is set to 'Border'.
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/// \return The voxel value
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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VoxelType SimpleVolume<VoxelType>::getVoxel(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapMode eWrapMode, VoxelType tBorder) const
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{
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switch(eWrapMode)
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{
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case WrapModes::Validate:
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return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<WrapModes::Validate>(), tBorder);
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case WrapModes::Clamp:
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return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<WrapModes::Clamp>(), tBorder);
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case WrapModes::Border:
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return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<WrapModes::Border>(), tBorder);
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case WrapModes::AssumeValid:
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return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<WrapModes::AssumeValid>(), tBorder);
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default:
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// Should never happen
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POLYVOX_ASSERT(false, "Invalid wrap mode");
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return VoxelType();
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// This version of the function is provided so that the wrap mode does not need
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/// to be specified as a template parameter, as it may be confusing to some users.
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/// \param v3dPos The 3D position of the voxel
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/// \param eWrapMode Specifies the behaviour when the requested position is outside of the volume.
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/// \param tBorder The border value to use if the wrap mode is set to 'Border'.
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/// \return The voxel value
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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VoxelType SimpleVolume<VoxelType>::getVoxel(const Vector3DInt32& v3dPos, WrapMode eWrapMode, VoxelType tBorder) const
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{
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return getVoxel(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), eWrapMode, tBorder);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// \param uXPos The \c x position of the voxel
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/// \param uYPos The \c y position of the voxel
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/// \param uZPos The \c z position of the voxel
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/// \return The voxel value
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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VoxelType SimpleVolume<VoxelType>::getVoxelAt(int32_t uXPos, int32_t uYPos, int32_t uZPos) const
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{
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if(this->m_regValidRegion.containsPoint(Vector3DInt32(uXPos, uYPos, uZPos)))
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{
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const int32_t blockX = uXPos >> m_uBlockSideLengthPower;
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const int32_t blockY = uYPos >> m_uBlockSideLengthPower;
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const int32_t blockZ = uZPos >> m_uBlockSideLengthPower;
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const uint16_t xOffset = static_cast<uint16_t>(uXPos - (blockX << m_uBlockSideLengthPower));
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const uint16_t yOffset = static_cast<uint16_t>(uYPos - (blockY << m_uBlockSideLengthPower));
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const uint16_t zOffset = static_cast<uint16_t>(uZPos - (blockZ << m_uBlockSideLengthPower));
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typename SimpleVolume<VoxelType>::Block* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
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return pUncompressedBlock->getVoxelAt(xOffset,yOffset,zOffset);
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}
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else
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{
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return this->getBorderValue();
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// \param v3dPos The 3D position of the voxel
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/// \return The voxel value
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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VoxelType SimpleVolume<VoxelType>::getVoxelAt(const Vector3DInt32& 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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////////////////////////////////////////////////////////////////////////////////
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/// \param uXPos the \c x position of the voxel
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/// \param uYPos the \c y position of the voxel
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/// \param uZPos the \c z position of the voxel
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/// \param tValue the value to which the voxel will be set
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/// \param eWrapMode Specifies the behaviour when the requested position is outside of the volume.
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/// This must be set to 'None' or 'DontCheck'. Other wrap modes cannot be used when writing to volume data.
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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void SimpleVolume<VoxelType>::setVoxel(int32_t uXPos, int32_t uYPos, int32_t uZPos, VoxelType tValue, WrapMode eWrapMode)
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{
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if((eWrapMode != WrapModes::Validate) && (eWrapMode != WrapModes::AssumeValid))
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{
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POLYVOX_THROW(std::invalid_argument, "Invalid wrap mode in call to setVoxel(). It must be 'None' or 'DontCheck'.");
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}
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// This validation is skipped if the wrap mode is 'DontCheck'
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if(eWrapMode == WrapModes::Validate)
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{
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if(this->m_regValidRegion.containsPoint(Vector3DInt32(uXPos, uYPos, uZPos)) == false)
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{
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POLYVOX_THROW(std::out_of_range, "Position is outside valid region");
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}
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}
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const int32_t blockX = uXPos >> m_uBlockSideLengthPower;
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const int32_t blockY = uYPos >> m_uBlockSideLengthPower;
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const int32_t blockZ = uZPos >> m_uBlockSideLengthPower;
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const uint16_t xOffset = uXPos - (blockX << m_uBlockSideLengthPower);
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const uint16_t yOffset = uYPos - (blockY << m_uBlockSideLengthPower);
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const uint16_t zOffset = uZPos - (blockZ << m_uBlockSideLengthPower);
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typename SimpleVolume<VoxelType>::Block* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
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pUncompressedBlock->setVoxelAt(xOffset,yOffset,zOffset, tValue);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// \param v3dPos the 3D position of the voxel
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/// \param tValue the value to which the voxel will be set
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/// \param eWrapMode Specifies the behaviour when the requested position is outside of the volume.
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/// This must be set to 'None' or 'DontCheck'. Other wrap modes cannot be used when writing to volume data.
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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void SimpleVolume<VoxelType>::setVoxel(const Vector3DInt32& v3dPos, VoxelType tValue, WrapMode eWrapMode)
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{
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setVoxel(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), tValue, eWrapMode);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// \param uXPos the \c x position of the voxel
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/// \param uYPos the \c y position of the voxel
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/// \param uZPos the \c z position of the voxel
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/// \param tValue the value to which the voxel will be set
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/// \return whether the requested position is inside the volume
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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bool SimpleVolume<VoxelType>::setVoxelAt(int32_t uXPos, int32_t uYPos, int32_t uZPos, VoxelType tValue)
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{
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// PolyVox does not throw an exception when a voxel is out of range. Please see 'Error Handling' in the User Manual.
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POLYVOX_ASSERT(this->m_regValidRegion.containsPoint(Vector3DInt32(uXPos, uYPos, uZPos)), "Position is outside valid region");
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const int32_t blockX = uXPos >> m_uBlockSideLengthPower;
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const int32_t blockY = uYPos >> m_uBlockSideLengthPower;
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const int32_t blockZ = uZPos >> m_uBlockSideLengthPower;
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const uint16_t xOffset = uXPos - (blockX << m_uBlockSideLengthPower);
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const uint16_t yOffset = uYPos - (blockY << m_uBlockSideLengthPower);
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const uint16_t zOffset = uZPos - (blockZ << m_uBlockSideLengthPower);
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typename SimpleVolume<VoxelType>::Block* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
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pUncompressedBlock->setVoxelAt(xOffset,yOffset,zOffset, tValue);
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//Return true to indicate that we modified a voxel.
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// \param v3dPos the 3D position of the voxel
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/// \param tValue the value to which the voxel will be set
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/// \return whether the requested position is inside the volume
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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bool SimpleVolume<VoxelType>::setVoxelAt(const Vector3DInt32& v3dPos, VoxelType tValue)
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{
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return setVoxelAt(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), tValue);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// This function should probably be made internal...
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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void SimpleVolume<VoxelType>::initialise(const Region& regValidRegion, uint16_t uBlockSideLength)
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{
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//Release mode validation
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if(uBlockSideLength < 8)
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{
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POLYVOX_THROW(std::invalid_argument, "Block side length should be at least 8");
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}
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if(uBlockSideLength > 256)
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{
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POLYVOX_THROW(std::invalid_argument, "Block side length should not be more than 256");
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}
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if(!isPowerOf2(uBlockSideLength))
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{
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POLYVOX_THROW(std::invalid_argument, "Block side length must be a power of two.");
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}
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this->m_regValidRegion = regValidRegion;
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//Compute the block side length
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m_uBlockSideLength = uBlockSideLength;
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m_uBlockSideLengthPower = logBase2(m_uBlockSideLength);
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m_uNoOfVoxelsPerBlock = m_uBlockSideLength * m_uBlockSideLength * m_uBlockSideLength;
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m_regValidRegionInBlocks.setLowerX(this->m_regValidRegion.getLowerX() >> m_uBlockSideLengthPower);
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m_regValidRegionInBlocks.setLowerY(this->m_regValidRegion.getLowerY() >> m_uBlockSideLengthPower);
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m_regValidRegionInBlocks.setLowerZ(this->m_regValidRegion.getLowerZ() >> m_uBlockSideLengthPower);
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m_regValidRegionInBlocks.setUpperX(this->m_regValidRegion.getUpperX() >> m_uBlockSideLengthPower);
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m_regValidRegionInBlocks.setUpperY(this->m_regValidRegion.getUpperY() >> m_uBlockSideLengthPower);
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m_regValidRegionInBlocks.setUpperZ(this->m_regValidRegion.getUpperZ() >> m_uBlockSideLengthPower);
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//Compute the size of the volume in blocks (and note +1 at the end)
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m_uWidthInBlocks = m_regValidRegionInBlocks.getUpperX() - m_regValidRegionInBlocks.getLowerX() + 1;
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m_uHeightInBlocks = m_regValidRegionInBlocks.getUpperY() - m_regValidRegionInBlocks.getLowerY() + 1;
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m_uDepthInBlocks = m_regValidRegionInBlocks.getUpperZ() - m_regValidRegionInBlocks.getLowerZ() + 1;
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m_uNoOfBlocksInVolume = m_uWidthInBlocks * m_uHeightInBlocks * m_uDepthInBlocks;
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//Allocate the data
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m_pBlocks = new Block[m_uNoOfBlocksInVolume];
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for(uint32_t i = 0; i < m_uNoOfBlocksInVolume; ++i)
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{
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m_pBlocks[i].initialise(m_uBlockSideLength);
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}
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//Other properties we might find useful later
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this->m_uLongestSideLength = (std::max)((std::max)(this->getWidth(),this->getHeight()),this->getDepth());
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this->m_uShortestSideLength = (std::min)((std::min)(this->getWidth(),this->getHeight()),this->getDepth());
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this->m_fDiagonalLength = sqrtf(static_cast<float>(this->getWidth() * this->getWidth() + this->getHeight() * this->getHeight() + this->getDepth() * this->getDepth()));
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}
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template <typename VoxelType>
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typename SimpleVolume<VoxelType>::Block* SimpleVolume<VoxelType>::getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const
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{
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//The lower left corner of the volume could be
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//anywhere, but array indices need to start at zero.
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uBlockX -= m_regValidRegionInBlocks.getLowerX();
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uBlockY -= m_regValidRegionInBlocks.getLowerY();
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uBlockZ -= m_regValidRegionInBlocks.getLowerZ();
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POLYVOX_ASSERT(uBlockX >= 0, "Block coordinate must not be negative.");
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POLYVOX_ASSERT(uBlockY >= 0, "Block coordinate must not be negative.");
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POLYVOX_ASSERT(uBlockZ >= 0, "Block coordinate must not be negative.");
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//Compute the block index
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uint32_t uBlockIndex =
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uBlockX +
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uBlockY * m_uWidthInBlocks +
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uBlockZ * m_uWidthInBlocks * m_uHeightInBlocks;
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//Return the block
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return &(m_pBlocks[uBlockIndex]);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// \todo This function needs reviewing for accuracy...
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///
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/// \return The number of bytes used
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////////////////////////////////////////////////////////////////////////////////
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template <typename VoxelType>
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uint32_t SimpleVolume<VoxelType>::calculateSizeInBytes(void)
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{
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uint32_t uSizeInBytes = sizeof(SimpleVolume);
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uint32_t uSizeOfBlockInBytes = m_uNoOfVoxelsPerBlock * sizeof(VoxelType);
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//Memory used by the blocks
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uSizeInBytes += uSizeOfBlockInBytes * (m_uNoOfBlocksInVolume);
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return uSizeInBytes;
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}
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template <typename VoxelType>
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template <WrapMode eWrapMode>
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VoxelType SimpleVolume<VoxelType>::getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<eWrapMode>, VoxelType tBorder) const
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{
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// This function should never be called because one of the specialisations should always match.
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POLYVOX_ASSERT(false, "This function is not implemented and should never be called!");
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}
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template <typename VoxelType>
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VoxelType SimpleVolume<VoxelType>::getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<WrapModes::Validate>, VoxelType tBorder) const
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{
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if(this->m_regValidRegion.containsPoint(Vector3DInt32(uXPos, uYPos, uZPos)) == false)
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{
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POLYVOX_THROW(std::out_of_range, "Position is outside valid region");
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}
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return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<WrapModes::AssumeValid>(), tBorder); // No wrapping as we've just validated the position.
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}
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template <typename VoxelType>
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VoxelType SimpleVolume<VoxelType>::getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<WrapModes::Clamp>, VoxelType tBorder) const
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{
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//Perform clamping
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uXPos = (std::max)(uXPos, this->m_regValidRegion.getLowerX());
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uYPos = (std::max)(uYPos, this->m_regValidRegion.getLowerY());
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uZPos = (std::max)(uZPos, this->m_regValidRegion.getLowerZ());
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uXPos = (std::min)(uXPos, this->m_regValidRegion.getUpperX());
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uYPos = (std::min)(uYPos, this->m_regValidRegion.getUpperY());
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uZPos = (std::min)(uZPos, this->m_regValidRegion.getUpperZ());
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|
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return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<WrapModes::AssumeValid>(), tBorder); // No wrapping as we've just validated the position.
|
|
}
|
|
|
|
template <typename VoxelType>
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|
VoxelType SimpleVolume<VoxelType>::getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<WrapModes::Border>, VoxelType tBorder) const
|
|
{
|
|
if(this->m_regValidRegion.containsPoint(uXPos, uYPos, uZPos))
|
|
{
|
|
return getVoxelImpl(uXPos, uYPos, uZPos, WrapModeType<WrapModes::AssumeValid>(), tBorder); // No wrapping as we've just validated the position.
|
|
}
|
|
else
|
|
{
|
|
return tBorder;
|
|
}
|
|
}
|
|
|
|
template <typename VoxelType>
|
|
VoxelType SimpleVolume<VoxelType>::getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<WrapModes::AssumeValid>, VoxelType /*tBorder*/) const
|
|
{
|
|
const int32_t blockX = uXPos >> m_uBlockSideLengthPower;
|
|
const int32_t blockY = uYPos >> m_uBlockSideLengthPower;
|
|
const int32_t blockZ = uZPos >> m_uBlockSideLengthPower;
|
|
|
|
const uint16_t xOffset = static_cast<uint16_t>(uXPos - (blockX << m_uBlockSideLengthPower));
|
|
const uint16_t yOffset = static_cast<uint16_t>(uYPos - (blockY << m_uBlockSideLengthPower));
|
|
const uint16_t zOffset = static_cast<uint16_t>(uZPos - (blockZ << m_uBlockSideLengthPower));
|
|
|
|
typename SimpleVolume<VoxelType>::Block* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
|
|
|
|
return pUncompressedBlock->getVoxelAt(xOffset,yOffset,zOffset);
|
|
}
|
|
}
|
|
|