SGSpatialSort.h

/*
Open Asset Import Library (assimp)
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*/
 
#pragma once
#ifndef AI_D3DSSPATIALSORT_H_INC
#define AI_D3DSSPATIALSORT_H_INC
 
#ifdef __GNUC__
#   pragma GCC system_header
#endif
 
#include <assimp/types.h>
#include <vector>
#include <stdint.h>
 
namespace Assimp    {
 
// ----------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------
class ASSIMP_API SGSpatialSort
{
public:
 
    SGSpatialSort();
 
    // -------------------------------------------------------------------
    explicit SGSpatialSort(const std::vector<aiVector3D>& vPositions);
 
    // -------------------------------------------------------------------
    void Add(const aiVector3D& vPosition, unsigned int index,
        unsigned int smoothingGroup);
 
    // -------------------------------------------------------------------
    void Prepare();
 
    ~SGSpatialSort();
 
    // -------------------------------------------------------------------
    // -------------------------------------------------------------------
    void FindPositions( const aiVector3D& pPosition, uint32_t pSG,
        float pRadius, std::vector<unsigned int>& poResults,
        bool exactMatch = false) const;
 
protected:
    aiVector3D mPlaneNormal;
 
    // -------------------------------------------------------------------
    // -------------------------------------------------------------------
    struct Entry {
        unsigned int mIndex;    
        aiVector3D mPosition;   
        uint32_t mSmoothGroups;
        float mDistance;        
 
        Entry() AI_NO_EXCEPT
        : mIndex(0)
        , mPosition()
        , mSmoothGroups(0)
        , mDistance(0.0f) {
            // empty
        }
 
        Entry( unsigned int pIndex, const aiVector3D& pPosition, float pDistance,uint32_t pSG)
        : mIndex( pIndex)
        , mPosition( pPosition)
        , mSmoothGroups(pSG)
        , mDistance( pDistance) {
            // empty
        }
 
        bool operator < (const Entry& e) const {
            return mDistance < e.mDistance;
        }
    };
 
    // all positions, sorted by distance to the sorting plane
    std::vector<Entry> mPositions;
};
 
} // end of namespace Assimp
 
#endif // AI_SPATIALSORT_H_INC