# Critique round 2 (read-only): decal faces that lie on top of each other (two markings' pads copying the same hull face)
import bpy, json, os, collections
ROOT = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
o = bpy.data.objects["SM_Grouper_Decals"]; me = o.data; M = o.matrix_world
uv = me.uv_layers["UVMap"].data
tiles = json.load(open(os.path.join(ROOT, "build", "decals.json")))["tiles"]
def tile_of(p):
    u = sum(uv[li].uv.x for li in range(p.loop_start, p.loop_start + p.loop_total)) / p.loop_total
    v = sum(uv[li].uv.y for li in range(p.loop_start, p.loop_start + p.loop_total)) / p.loop_total
    for k, t in tiles.items():
        if t["uv"][0] <= u <= t["uv"][2] and t["uv"][1] <= v <= t["uv"][3]:
            return k
    return "?"
groups = collections.defaultdict(list)
for p in me.polygons:
    c = M @ p.center
    groups[(round(c.x, 4), round(c.y, 4), round(c.z, 4))].append(tile_of(p))
dup = {k: v for k, v in groups.items() if len(v) > 1}
pairs = collections.Counter(tuple(sorted(v)) for v in dup.values())
res = dict(faces=len(me.polygons), positions_shared=len(dup), pairs=[[list(k), n] for k, n in pairs.items()],
           examples=[[list(k), v] for k, v in list(dup.items())[:6]])
json.dump(res, open(os.path.join(ROOT, "critique", "round2", "decal_dupes.json"), "w"), indent=1)
print("CR2 DUPES", json.dumps(res))