nd_box_expand()

static int nd_box_expand ( ND_BOX *  nd_box, double  expansion_factor  )

static

Expand an ND_BOX ever so slightly.

Expand parameter is the proportion of total width to add.

Definition at line 641 of file gserialized_estimate.c.

{
        int d;
        double size;
        for ( d = 0; d < ND_DIMS; d++ )
        {
                size = nd_box->max[d] - nd_box->min[d];
                /* Avoid expanding boxes that are either too wide or too narrow*/
                if (size < MIN_DIMENSION_WIDTH || size > MAX_DIMENSION_WIDTH)
                        continue;
                nd_box->min[d] -= size * expansion_factor / 2;
                nd_box->max[d] += size * expansion_factor / 2;
        }
        return true;
}

References ND_BOX_T::max, MAX_DIMENSION_WIDTH, ND_BOX_T::min, and ND_DIMS.

Referenced by compute_gserialized_stats_mode().

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