# Mako: colour runs along image columns (or rows) of one view of the reference, to read the hull's lines off.
# python mk_runs.py side 40 950 10 [y0 y1]   -> per column: runs "y0-y1 class" (o orange, g glass, k dark, s grey, r red)
import os, sys
import numpy as np
from PIL import Image
HERE = os.path.dirname(os.path.abspath(__file__))
a = np.asarray(Image.open(os.path.join(os.path.dirname(HERE), "reference", "user_reference.webp")).convert("RGB")).astype(int)
R, G, B = a[..., 0], a[..., 1], a[..., 2]
mx, mn = a.max(-1), a.min(-1)
red = (R - G > 25) & (B - G > -15) & (R > 120)
obj = ((mn < 222) | (mx - mn > 45)) & ~red
C = np.full(R.shape, ".", dtype="<U1")
C[obj] = "s"
C[obj & (mx < 90)] = "k"
C[obj & (B - R > 35) & (B > 120)] = "g"
C[obj & (R > 120) & (R - G > 25) & (G - B > 20)] = "o"
C[red] = "r"
view = sys.argv[1]
a0, a1, step = map(int, sys.argv[2:5])
BOX = {"top": (40, 520), "side": (530, 1065), "front": (970, 1410), "rear": (960, 1410)}
lo, hi = (int(sys.argv[5]), int(sys.argv[6])) if len(sys.argv) > 6 else BOX[view]
rows_mode = view in ("front", "rear") and len(sys.argv) <= 6 or (len(sys.argv) > 7 and sys.argv[7] == "rows")
for c in range(a0, a1 + 1, step):
    line = C[c, lo:hi] if rows_mode else C[lo:hi, c]
    runs, start = [], 0
    for i in range(1, len(line) + 1):
        if i == len(line) or line[i] != line[start]:
            if line[start] != "." and i - start >= 3:
                runs.append("%d-%d%s" % (lo + start, lo + i - 1, line[start]))
            start = i
    print(c, " ".join(runs))