PolyVoxCore/include/PolyVoxCore/RawVolume.inl

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/*******************************************************************************
Copyright (c) 2005-2009 David Williams

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not
    claim that you wrote the original software. If you use this software
    in a product, an acknowledgment in the product documentation would be
    appreciated but is not required.

    2. Altered source versions must be plainly marked as such, and must not be
    misrepresented as being the original software.

    3. This notice may not be removed or altered from any source
    distribution.   
*******************************************************************************/

namespace PolyVox
{
    template <typename VoxelType>
    RawVolume<VoxelType>::RawVolume
    (
        const Region& regValid
    )
    :BaseVolume<VoxelType>(regValid)
    {
        setBorderValue(VoxelType());

        //Create a volume of the right size.
        resize(regValid);
    }

    template <typename VoxelType>
    RawVolume<VoxelType>::~RawVolume()
    {
        delete[] m_pData;
        m_pData = 0;
    }

    template <typename VoxelType>
    VoxelType RawVolume<VoxelType>::getBorderValue(void) const
    {
        return m_tBorderValue;
    }

    template <typename VoxelType>
    VoxelType RawVolume<VoxelType>::getVoxelAt(int32_t uXPos, int32_t uYPos, int32_t uZPos) const
    {
        if(this->m_regValidRegion.containsPoint(Vector3DInt32(uXPos, uYPos, uZPos)))
        {
            const Vector3DInt32& v3dLowerCorner = this->m_regValidRegion.getLowerCorner();
            int32_t iLocalXPos = uXPos - v3dLowerCorner.getX();
            int32_t iLocalYPos = uYPos - v3dLowerCorner.getY();
            int32_t iLocalZPos = uZPos - v3dLowerCorner.getZ();

            return m_pData
            [
                iLocalXPos + 
                iLocalYPos * this->getWidth() + 
                iLocalZPos * this->getWidth() * this->getHeight()
            ];
        }
        else
        {
            return this->getBorderValue();
        }
    }

    template <typename VoxelType>
    VoxelType RawVolume<VoxelType>::getVoxelAt(const Vector3DInt32& v3dPos) const
    {
        return getVoxelAt(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ());
    }

    template <typename VoxelType>
    void RawVolume<VoxelType>::setBorderValue(const VoxelType& tBorder) 
    {
        m_tBorderValue = tBorder;
    }

    template <typename VoxelType>
    bool RawVolume<VoxelType>::setVoxelAt(int32_t uXPos, int32_t uYPos, int32_t uZPos, VoxelType tValue)
    {
        if(this->m_regValidRegion.containsPoint(Vector3DInt32(uXPos, uYPos, uZPos)))
        {
            const Vector3DInt32& v3dLowerCorner = this->m_regValidRegion.getLowerCorner();
            int32_t iLocalXPos = uXPos - v3dLowerCorner.getX();
            int32_t iLocalYPos = uYPos - v3dLowerCorner.getY();
            int32_t iLocalZPos = uZPos - v3dLowerCorner.getZ();

            m_pData
            [
                iLocalXPos + 
                iLocalYPos * this->getWidth() + 
                iLocalZPos * this->getWidth() * this->getHeight()
            ] = tValue;

            //Return true to indicate that we modified a voxel.
            return true;
        }
        else
        {
            return false;
        }
    }

    template <typename VoxelType>
    bool RawVolume<VoxelType>::setVoxelAt(const Vector3DInt32& v3dPos, VoxelType tValue)
    {
        return setVoxelAt(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), tValue);
    }

    template <typename VoxelType>
    void RawVolume<VoxelType>::resize(const Region& regValidRegion)
    {
        this->m_regValidRegion = regValidRegion;

        //Ensure dimensions of the specified Region are valid
        assert(this->getWidth() > 0);
        assert(this->getHeight() > 0);
        assert(this->getDepth() > 0);

        //Create the data
        m_pData = new VoxelType[this->getWidth() * this->getHeight()* this->getDepth()];

        //Other properties we might find useful later
        this->m_uLongestSideLength = (std::max)((std::max)(this->getWidth(),this->getHeight()),this->getDepth());
        this->m_uShortestSideLength = (std::min)((std::min)(this->getWidth(),this->getHeight()),this->getDepth());
        this->m_fDiagonalLength = sqrtf(static_cast<float>(this->getWidth() * this->getWidth() + this->getHeight() * this->getHeight() + this->getDepth() * this->getDepth()));
    }

    template <typename VoxelType>
    uint32_t RawVolume<VoxelType>::calculateSizeInBytes(void)
    {
        return this->getWidth() * this->getHeight() * this->getDepth() * sizeof(VoxelType);
    }

}