nextCubeBox()

static CubeGIDX * nextCubeBox ( CubeGIDX *  cube_box, GIDX *  centroid, uint16_t  octant  )

static

Definition at line 187 of file gserialized_spgist_nd.c.

{
        int ndims = GIDX_NDIMS(centroid), i;
        CubeGIDX *next_cube_box = (CubeGIDX *)palloc(sizeof(CubeGIDX));
        GIDX *left = (GIDX *)palloc(GIDX_SIZE(ndims));
        GIDX *right = (GIDX *)palloc(GIDX_SIZE(ndims));
        uint16_t dim = 0x01;
 
        memcpy(left, cube_box->left, VARSIZE(cube_box->left));
        memcpy(right, cube_box->right, VARSIZE(cube_box->right));
        next_cube_box->left = left;
        next_cube_box->right = right;
 
        for (i = 0; i < ndims; i++)
        {
                if (GIDX_GET_MAX(cube_box->left, i) != FLT_MAX && GIDX_GET_MAX(centroid, i) != FLT_MAX)
                {
                        if (octant & dim)
                                GIDX_GET_MIN(next_cube_box->right, i) = GIDX_GET_MAX(centroid, i);
                        else
                                GIDX_GET_MAX(next_cube_box->right, i) = GIDX_GET_MAX(centroid, i);
 
                        dim = dim << 1;
 
                        if (octant & dim)
                                GIDX_GET_MIN(next_cube_box->left, i) = GIDX_GET_MIN(centroid, i);
                        else
                                GIDX_GET_MAX(next_cube_box->left, i) = GIDX_GET_MIN(centroid, i);
 
                        dim = dim << 1;
                }
        }
 
        return next_cube_box;
}

References centroid(), CubeGIDX::left, and CubeGIDX::right.

Referenced by gserialized_spgist_inner_consistent_nd().

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