import machine
from sh1107 import SH1107_I2C
import time
import math

# I2C 初始化
i2c = machine.I2C(0, scl=machine.Pin(17), sda=machine.Pin(16), freq=400000)
display = SH1107_I2C(128, 128, i2c, address=0x3C, rotate=0)
display.sleep(False)
display.contrast(255)

center_x, center_y = 64, 64

def draw_filled_circle(display, x, y, r, c):
    """手動繪製填充圓形替代 fill_circle"""
    display.circle(x, y, r, c)
    for i in range(1, r):
        a = int(math.sqrt(r*r - i*i))
        display.hline(x-a, y+i, a*2, c)
        display.hline(x-a, y-i, a*2, c)

def draw_background(display):
    display.fill(0)
    display.circle(center_x, center_y, 63, 1)
    
    # 60 分鐘/秒點點
    for i in range(60):
        x = round(center_x + math.sin(math.radians(i * 6)) * 60)
        y = round(center_y - math.cos(math.radians(i * 6)) * 60)
        display.pixel(x, y, 1)
    
    # 小時刻度線
    for i in range(12):
        if i % 3 != 0:
            x1 = round(center_x + math.sin(math.radians(i * 30)) * 54)
            y1 = round(center_y - math.cos(math.radians(i * 30)) * 54)
            x2 = round(center_x + math.sin(math.radians(i * 30)) * 46)
            y2 = round(center_y - math.cos(math.radians(i * 30)) * 46)
            display.line(x1, y1, x2, y2, 1)
    
    # 數字標記（調整字體位置）
    display.text('12', 57, 12, 1)
    display.text('3', 108, 67, 1)
    display.text('6', 57, 116, 1)
    display.text('9', 5, 67, 1)

# 細指針（秒針）- 簡化版
def draw_hand_thin(display, angle, length_long, length_short):
    x1 = round(center_x + math.sin(math.radians(angle)) * length_long)
    y1 = round(center_y - math.cos(math.radians(angle)) * length_long)
    x2 = round(center_x + math.sin(math.radians(angle + 180)) * length_short)
    y2 = round(center_y - math.cos(math.radians(angle + 180)) * length_short)
    display.line(x1, y1, x2, y2, 1)
    # 用小圓圈替代 fill_circle
    display.circle(x2, y2, 3, 1)

# 粗指針（分針、時針）- 簡化版
def draw_hand_bold(display, angle, length_long, length_short, dot_size):
    x1 = round(center_x + math.sin(math.radians(angle)) * length_long)
    y1 = round(center_y - math.cos(math.radians(angle)) * length_long)
    x2 = round(center_x + math.sin(math.radians(angle)) * length_short)
    y2 = round(center_y - math.cos(math.radians(angle)) * length_short)
    
    display.line(center_x, center_y, x2, y2, 1)
    display.circle(x1, y1, dot_size, 1)  # 端點圓圈
    display.circle(x2, y2, dot_size, 1)
    # 移除 triangle，改用粗線條效果

# 主迴圈
seconds = minutes = hours = 10
while True:
    draw_background(display)
    
    # 繪製指針
    draw_hand_bold(display, minutes * 6, 48, 15, 2)           # 分針
    draw_hand_bold(display, (hours % 12) * 30 + (minutes / 2), 32, 15, 2)  # 時針
    draw_hand_thin(display, seconds * 6, 56, 4)              # 秒針
    
    # 中心圓盤
    display.fill_rect(center_x-4, center_y-4, 9, 9, 0)  # 黑色中心
    display.circle(center_x, center_y, 4, 1)
    
    display.show()
    
    time.sleep(1)
    seconds += 1
    if seconds >= 60:
        seconds = 0
        minutes += 1
        if minutes >= 60:
            minutes = 0
            hours += 1