box2df_distance_leaf_centroid()

static double box2df_distance_leaf_centroid ( const BOX2DF *  a, const BOX2DF *  b  )

static

Calculate the centroid->centroid distance between the boxes.

Definition at line 435 of file gserialized_gist_2d.c.

References box2df_overlaps(), and LW_TRUE.

Referenced by gserialized_distance_centroid_2d(), and gserialized_gist_distance_2d().

{
    /* The centroid->centroid distance between the boxes */
    double a_x = (a->xmax + a->xmin) / 2.0;
    double a_y = (a->ymax + a->ymin) / 2.0;
    double b_x = (b->xmax + b->xmin) / 2.0;
    double b_y = (b->ymax + b->ymin) / 2.0;

    /* This "distance" is only used for comparisons, */
    return sqrt((a_x - b_x) * (a_x - b_x) + (a_y - b_y) * (a_y - b_y));
}

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