我要评论代码：
import random
import time
from math import pi, cos, sin
from tkinter import *
canvas_width = 640 # 画布的宽
canvas_height = 640 # 画布的高
tree_color = "#2e8b57" # 树的颜色
trunk_color = "#8b4513" # 树干的颜色
star_color = "#ffff00" # 星星的颜色
light_color = "#ff4500" # 灯光的颜色
background_color = "#000000" # 背景颜色
text_color = "#ffffff" # 文字颜色
text_font = ('arial', 24, 'bold') # 文字的字体
# 圣诞树的大小和位置
tree_bottom = canvas_height - 50
tree_top = tree_bottom - 200
tree_width = 200
trunk_width = 40
trunk_height = 50
def draw_tree(canvas):
# 树的底部三角形部分
canvas.create_polygon(
canvas_width // 2, tree_top, # 顶部
canvas_width // 2 - tree_width, tree_bottom, # 左下角
canvas_width // 2 + tree_width, tree_bottom, # 右下角
fill=tree_color, outline="green", width=2
)
# 树的中部三角形部分
canvas.create_polygon(
canvas_width // 2, tree_top + 40, # 顶部
canvas_width // 2 - tree_width * 0.8, tree_bottom - 40, # 左下角
canvas_width // 2 + tree_width * 0.8, tree_bottom - 40, # 右下角
fill=tree_color, outline="green", width=2
)
# 树的顶部三角形部分
canvas.create_polygon(
canvas_width // 2, tree_top + 80, # 顶部
canvas_width // 2 - tree_width * 0.6, tree_bottom - 80, # 左下角
canvas_width // 2 + tree_width * 0.6, tree_bottom - 80, # 右下角
fill=tree_color, outline="green", width=2
)
# 树干
canvas.create_rectangle(
canvas_width // 2 - trunk_width // 2, tree_bottom, # 左上角
canvas_width // 2 + trunk_width // 2, tree_bottom + trunk_height, # 右下角
fill=trunk_color, outline=trunk_color
)
def draw_star(canvas, x, y, size):
# 绘制一个星星
canvas.create_oval(
x - size, y - size, x + size, y + size, # 左上角和右下角
fill=star_color, outline=star_color
)
def draw_lights(canvas, x, y, size, color):
# 绘制一颗灯泡
canvas.create_oval(
x - size, y - size, x + size, y + size, # 左上角和右下角
fill=color, outline=color
)
def draw_dynamic_star(canvas, frame):
# 让星星闪烁
if frame % 30 < 15:
draw_star(canvas, canvas_width // 2, tree_top - 40, 15)
def draw_dynamic_lights(canvas, frame):
# 动态灯泡
num_lights = 15
for i in range(num_lights):
angle = 2 * pi * i / num_lights # 每个灯泡的位置角度
x = canvas_width // 2 + (tree_width * 0.6) * cos(angle)
y = tree_top + 80 + (tree_width * 0.6) * sin(angle)
# 每个灯泡随机闪烁
color = light_color if random.random() > 0.5 else "black"
draw_lights(canvas, x, y, 5, color)
def draw_text(canvas):
# 显示圣诞祝福
canvas.create_text(canvas_width // 2, canvas_height - 20, text="merry christmas!", fill=text_color, font=text_font)
def draw_dynamic_tree(main, canvas, frame):
# 清空画布
canvas.delete('all')
# 绘制圣诞树
draw_tree(canvas)
# 绘制闪烁的星星
draw_dynamic_star(canvas, frame)
# 绘制动态灯光
draw_dynamic_lights(canvas, frame)
# 绘制祝福语
draw_text(canvas)
# 设置每帧调用
main.after(100, draw_dynamic_tree, main, canvas, frame + 1)
if __name__ == '__main__':
root = tk() # 创建一个tk对象
canvas = canvas(root, bg=background_color, height=canvas_height, width=canvas_width)
canvas.pack()
# 动态绘制圣诞树
draw_dynamic_tree(root, canvas, 0)
# 启动应用
root.mainloop()
效果：
总结
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