Python 绘制七段数码管字母：从理论到实践

import matplotlib.pyplot as pltimport numpy as np

# 定义字母的段码，共阳极方式（段码中1表示灭，0表示亮）segment_codes = {    'A': '0111111',  # 0b0111111    'B': '1011110',  # 0b1011110    'C': '1100110',  # 0b1100110    'D': '1101101',  # 0b1101101    'E': '1111101',  # 0b1111101    'F': '1111001',  # 0b1111001    'G': '1101111',  # 0b1101111    # 省略其他字母，可以根据需要添加} # 将段码转换为用于绘制的数组def code_to_segments(code):    return [int(bit) == 0 for bit in code[::-1]]  # 反转二进制串，0表示亮，1表示灭

def draw_seven_segment_display(ax, segments, segment_width=0.1, segment_height=0.5, gap=0.02):    # 设定七段数码管的坐标    x_centers = np.linspace(-1, 1, 4)    y_tops = [0.5] * 3 + [0] * 4    y_bottoms = [0] * 3 + [-0.5] * 4     # 绘制七段    for i, segment in enumerate(segments):        if segment:            if i < 3:  # 上半部分                ax.plot([x_centers[i], x_centers[i + 1]], [y_tops[i], y_tops[i]], linewidth=segment_width)                ax.plot([x_centers[i + 1], x_centers[i + 1]], [y_tops[i], y_bottoms[i + 1]], linewidth=segment_width)            else:  # 下半部分                ax.plot([x_centers[i], x_centers[i - 1]], [y_bottoms[i], y_bottoms[i]], linewidth=segment_width)                ax.plot([x_centers[i - 1], x_centers[i - 1]], [y_tops[i - 1], y_bottoms[i]], linewidth=segment_width)        else:            # 绘制虚线表示灭的段            if i < 3:  # 上半部分                ax.plot([x_centers[i], x_centers[i + 1]], [y_tops[i], y_tops[i]], 'k--', linewidth=segment_width)                ax.plot([x_centers[i + 1], x_centers[i + 1]], [y_tops[i], y_bottoms[i + 1]], 'k--', linewidth=segment_width)            else:  # 下半部分                ax.plot([x_centers[i], x_centers[i - 1]], [y_bottoms[i], y_bottoms[i]], 'k--', linewidth=segment_width)                ax.plot([x_centers[i - 1], x_centers[i - 1]], [y_tops[i - 1], y_bottoms[i]], 'k--', linewidth=segment_width)     # 绘制边框    ax.plot([-1, 1, 1, -1, -1], [0.5, 0.5, -0.5, -0.5, 0.5], 'k-', linewidth=segment_width)

def display_letter(letter, ax):    segments = code_to_segments(segment_codes[letter])    draw_seven_segment_display(ax, segments)    ax.set_aspect('equal')    ax.axis('off')  # 关闭坐标轴 # 测试函数def main():    fig, ax = plt.subplots()    letter = 'A'    display_letter(letter, ax)    plt.title(f'Seven Segment Display: {letter}')    plt.show() if __name__ == '__main__':    main()

bash复制代码
pip install matplotlib

import matplotlib.pyplot as pltimport numpy as np # 定义字母的段码（共阴极方式，0表示亮，1表示灭）# 段码顺序为：a, b, c, d, e, f, gsegment_codes = {    'A': '0111111',    'B': '1011110',    'C': '1100110',    'D': '1101101',    'E': '1111101',    'F': '1111001',    'G': '1101111',    # 可以根据需要添加更多字母} # 绘制七段数码管的函数def draw_seven_segment_display(ax, segments, segment_width=0.1, segment_height=0.6, gap=0.02):    # 设定七段数码管的坐标    x_centers = np.linspace(-1, 1, 4) + gap / 2    y_tops = [segment_height] * 3 + [0] * 4    y_bottoms = [0] * 3 + [-segment_height] * 4     # 绘制七段    for i, segment in enumerate(segments):        if segment == 0:  # 段亮            if i < 3:  # 上半部分                ax.plot([x_centers[i], x_centers[i + 1]], [y_tops[i], y_tops[i]], linewidth=segment_width)                ax.plot([x_centers[i + 1], x_centers[i + 1] - gap], [y_tops[i], y_bottoms[i + 1]], linewidth=segment_width)            else:  # 下半部分                ax.plot([x_centers[i] + gap, x_centers[i - 1]], [y_bottoms[i], y_bottoms[i]], linewidth=segment_width)                ax.plot([x_centers[i - 1], x_centers[i - 1]], [y_tops[i - 1], y_bottoms[i]], linewidth=segment_width)        # 否则段灭，这里不绘制或可以绘制为虚线表示     # 绘制边框    outer_x = np.concatenate(([-1 - gap], x_centers, [1 + gap]))    outer_y_top = np.concatenate(([segment_height], y_tops[:3], [segment_height]))    outer_y_bottom = np.concatenate(([-segment_height], y_bottoms[3:], [-segment_height]))    ax.plot(outer_x, outer_y_top, 'k-', linewidth=segment_width)    ax.plot(outer_x, outer_y_bottom, 'k-', linewidth=segment_width)    ax.plot([-1 - gap, 1 + gap], [segment_height, segment_height], 'k-', linewidth=segment_width)    ax.plot([-1 - gap, 1 + gap], [-segment_height, -segment_height], 'k-', linewidth=segment_width)     ax.set_aspect('equal')    ax.axis('off')  # 关闭坐标轴 # 显示字母的函数def display_letter(letter, ax):    segments = [int(bit) for bit in segment_codes[letter]]    draw_seven_segment_display(ax, segments) # 测试函数def main():    fig, ax = plt.subplots()    letter = 'A'  # 可以更改为其他字母    display_letter(letter, ax)    plt.title(f'Seven Segment Display: {letter}')    plt.show() if __name__ == '__main__':    main()