Editing Openai/692fcfd8-4b44-800f-a184-fa098175a6d5 (section)

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==== <syntaxhighlight lang="python"># taiwan_numbers.py ====
=== 台灣 1～10 手勢辨識函式庫（給教師 import 使用） ===

def euclidean(a, b):
    return ((a[0]-b[0])'''2 + (a[1]-b[1])'''2)'''0.5

def one_or_nine(hand):
    """
    區別 1 和 9 （pattern 相同，需要判斷彎曲）
    """
    lm = hand["lmList"]
    mcp = lm[5]
    pip = lm[6]
    dip = lm[7]
    tip = lm[8]

    d_mcp_tip = euclidean((mcp[0],mcp[1]), (tip[0],tip[1]))
    poly = (
        euclidean((mcp[0],mcp[1]), (pip[0],pip[1])) +
        euclidean((pip[0],pip[1]), (dip[0],dip[1])) +
        euclidean((dip[0],dip[1]), (tip[0],tip[1]))
    )

    if d_mcp_tip > 0 and poly / d_mcp_tip > 1.25:
        return 9, "9"
    return 1, "1"

def taiwan_number(hand, detector):
    """
    傳入：hand（CVZone hand dict）、detector
    回傳：數字, 數字字串
    """

    fingers = detector.fingersUp(hand)
    pattern = tuple(fingers)

    mapping = {
        (0,1,1,0,0): 2,
        (1,1,1,0,0): 3,
        (0,1,1,1,1): 4,
        (1,1,1,1,1): 5,
        (1,0,0,0,1): 6,
        (1,1,0,0,1): 7,
        (1,1,0,0,0): 8,
    }

    if pattern in mapping:
        n = mapping[pattern]
        return n, str(n)

    # pattern 用來判斷 1 / 9
    if pattern == (0, 1, 0, 0, 0):
        return one_or_nine(hand)

    return None, "Unknown"

def taiwan_number_allhands(hands, detector):
    """
    若兩手都是 5 → 回傳 10
    否則只看第一手
    """
    if len(hands) >= 2:
        n1, _ = taiwan_number(hands[0], detector)
        n2, _ = taiwan_number(hands[1], detector)

        if n1 == 5 and n2 == 5:
            return 10, "10"

    return taiwan_number(hands[0], detector)

</syntaxhighlight>