"""Scrub feature assembly (`natural=scrub`).  Flat ground cover only."""

from osmassets.geom import clip_polygon


def assemble(ring, way_id, scene_xmin, scene_xmax, scene_ymin, scene_ymax,
             green_c, scrub_mat, add_scrub_patch_fn):
    ring = clip_polygon(ring, scene_xmin, scene_xmax, scene_ymin, scene_ymax)
    focus = list(ring)
    if len(ring) < 3:
        return 0, focus
    add_scrub_patch_fn("Scrub_" + str(way_id), ring, scrub_mat, green_c)
    return 1, focus