PostGIS  2.5.0dev-r@@SVN_REVISION@@
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 646 of file gserialized_estimate.c.

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

Referenced by compute_gserialized_stats_mode().

647 {
648  int d;
649  double size;
650  for ( d = 0; d < ND_DIMS; d++ )
651  {
652  size = nd_box->max[d] - nd_box->min[d];
653  if ( size <= 0 ) continue;
654  nd_box->min[d] -= size * expansion_factor / 2;
655  nd_box->max[d] += size * expansion_factor / 2;
656  }
657  return true;
658 }
#define ND_DIMS
The maximum number of dimensions our code can handle.
float4 max[ND_DIMS]
float4 min[ND_DIMS]

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