"""Water feature assembly (`natural=water` or `water=lake`)."""

from osmassets.geom import clip_polygon
from osmassets.mesh import MeshBatch


def assemble(ring, scene_xmin, scene_xmax, scene_ymin, scene_ymax,
             water_c, water_mat):
    ring = clip_polygon(ring, scene_xmin, scene_xmax, scene_ymin, scene_ymax)
    if len(ring) < 3:
        return 0
    batch = MeshBatch("Lake Surface", water_c, water_mat)
    batch.add_polygon(ring, 0.10)
    batch.finish()
    return 1