Octree.hxx

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#ifndef INCLUDED_VCL_INC_OCTREE_HXX
#define INCLUDED_VCL_INC_OCTREE_HXX
 
#include <vcl/dllapi.h>
#include <vcl/BitmapColor.hxx>
#include <tools/solar.h>
 
struct OctreeNode
{
    sal_uLong nCount = 0;
    sal_uLong nRed = 0;
    sal_uLong nGreen = 0;
    sal_uLong nBlue = 0;
    std::unique_ptr<OctreeNode> pChild[8];
    OctreeNode* pNext = nullptr;
    sal_uInt16 nPalIndex = 0;
    bool bLeaf = false;
};
 
class BitmapReadAccess;
 
class VCL_PLUGIN_PUBLIC Octree
{
private:
    void CreatePalette(OctreeNode* pNode);
    void GetPalIndex(const OctreeNode* pNode, BitmapColor const& color);
 
    SAL_DLLPRIVATE void add(std::unique_ptr<OctreeNode>& rpNode, BitmapColor const& color);
    SAL_DLLPRIVATE void reduce();
 
    BitmapPalette maPalette;
    sal_uLong mnLeafCount;
    sal_uLong mnLevel;
    std::unique_ptr<OctreeNode> pTree;
    std::vector<OctreeNode*> mpReduce;
    sal_uInt16 mnPalIndex;
 
public:
    Octree(const BitmapReadAccess& rReadAcc, sal_uLong nColors);
    ~Octree();
 
    const BitmapPalette& GetPalette();
    sal_uInt16 GetBestPaletteIndex(const BitmapColor& rColor);
};
 
class InverseColorMap
{
private:
    std::vector<sal_uInt8> mpBuffer;
    std::vector<sal_uInt8> mpMap;
 
    void ImplCreateBuffers();
 
public:
    explicit InverseColorMap(const BitmapPalette& rPal);
    ~InverseColorMap();
 
    sal_uInt16 GetBestPaletteIndex(const BitmapColor& rColor);
};
 
#endif // INCLUDED_VCL_INC_OCTREE_HXX
 
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