def apply(cat: GenCat,
face: Side,
tex_name: str,
portalable: Portalable = None,
normal: Vec = None,
loc: Vec = None):
"""Apply directly to a face, optionally using that to retrieve the location."""
if cat is GenCat.SPECIAL or cat is GenCat.OVERLAYS:
generator = GENERATORS[cat]
else:
if normal is None:
normal = face.normal()
normal.z = -normal.z
generator = gen(cat, normal, portalable)
if loc is None:
loc = face.get_origin()
face.mat = generator.get(loc, tex_name)
