lw_dist2d_check_overlap()

int lw_dist2d_check_overlap	(	LWGEOM *	lwg1,
		LWGEOM *	lwg2
	)

Definition at line 517 of file measures.c.

{
        LWDEBUG(2, "lw_dist2d_check_overlap is called");
        if (!lwg1->bbox)
                lwgeom_calculate_gbox(lwg1, lwg1->bbox);
        if (!lwg2->bbox)
                lwgeom_calculate_gbox(lwg2, lwg2->bbox);
 
        /* Check if the geometries intersect. */
        if ((lwg1->bbox->xmax < lwg2->bbox->xmin || lwg1->bbox->xmin > lwg2->bbox->xmax ||
             lwg1->bbox->ymax < lwg2->bbox->ymin || lwg1->bbox->ymin > lwg2->bbox->ymax))
        {
                LWDEBUG(3, "geometries bboxes did not overlap");
                return LW_FALSE;
        }
        LWDEBUG(3, "geometries bboxes overlap");
        return LW_TRUE;
}

References LWGEOM::bbox, LW_FALSE, LW_TRUE, LWDEBUG, lwgeom_calculate_gbox(), GBOX::xmax, GBOX::xmin, GBOX::ymax, and GBOX::ymin.

Referenced by lw_dist2d_recursive().

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