Turtle 库绘制浪漫场景

Turtle 库绘制浪漫场景

创建时间：2024-08-12

一、完整代码

import turtle
import time


# 实现清屏
def clear_screen():
    turtle.penup()  # 画笔抬起
    turtle.goto(0, 0)  # 定位到（0，0）
    turtle.color('white')
    turtle.pensize(800)  # 画笔粗细
    turtle.pendown()  # 画笔落下
    turtle.setheading(0)  # 设置朝向
    turtle.fd(300)  # 前进
    turtle.bk(600)  # 后退


# 初始化海龟的位置
def go_start(x, y, state):
    turtle.pendown() if state else turtle.penup()
    turtle.goto(x, y)


# 画线，state为真时海龟回到原点，为假时不回到原来的出发点
def draw_line(length, angle, state):
    turtle.pensize(1)
    turtle.pendown()
    turtle.setheading(angle)
    turtle.fd(length)
    turtle.bk(length) if state else turtle.penup()
    turtle.penup()


# 画出发射爱心的小人
def draw_people(x, y):
    turtle.penup()
    turtle.goto(x, y)
    turtle.pendown()
    turtle.pensize(2)
    turtle.color('black')
    turtle.setheading(0)
    turtle.circle(35, 360)
    turtle.penup()
    turtle.pensize(3)
    turtle.setheading(90)
    turtle.fd(45)
    turtle.setheading(180)
    turtle.fd(20)
    turtle.setheading(0)
    turtle.fd(35)
    turtle.pendown()
    turtle.circle(4, 360)
    turtle.penup()
    turtle.goto(x, y)
    turtle.pensize(2)
    turtle.setheading(0)
    turtle.fd(20)
    turtle.setheading(90)
    turtle.fd(20)
    turtle.setheading(-90)
    turtle.pendown()
    turtle.circle(5, 180)
    turtle.penup()
    turtle.goto(x, y)
    turtle.setheading(-90)
    turtle.pendown()
    turtle.fd(20)
    turtle.setheading(0)
    turtle.fd(35)
    turtle.setheading(60)
    turtle.fd(10)
    turtle.penup()
    turtle.goto(x, y)
    turtle.setheading(-90)
    turtle.pendown()
    turtle.fd(40)
    turtle.setheading(0)
    turtle.fd(35)
    turtle.setheading(-60)
    turtle.fd(10)
    turtle.penup()
    turtle.goto(x, y)
    turtle.setheading(-90)
    turtle.pendown()
    turtle.fd(60)
    turtle.setheading(-135)
    turtle.fd(60)
    turtle.bk(60)
    turtle.setheading(-45)
    turtle.fd(30)
    turtle.setheading(-135)
    turtle.fd(35)
    turtle.penup()


# 画爱心
def draw_heart(size):
    turtle.color('red', 'pink')
    turtle.pensize(2)
    turtle.pendown()
    turtle.setheading(150)
    turtle.begin_fill()
    turtle.fd(size)
    turtle.circle(size * -3.745, 45)
    turtle.circle(size * -1.431, 165)
    turtle.left(120)
    turtle.circle(size * -1.431, 165)
    turtle.circle(size * -3.745, 45)
    turtle.fd(size)
    turtle.end_fill()


# 画箭羽
def draw_feather(size):
    angle = 30  # 箭的倾角
    feather_num = size // 6  # 羽毛的数量
    feather_length = size // 3  # 羽毛的长度
    feather_gap = size // 10  # 羽毛的间隔
    for i in range(feather_num):
        draw_line(feather_gap, angle + 180, False)  # 箭柄，不折返
        draw_line(feather_length, angle + 145, True)  # 羽翼，要折返
    draw_line(feather_length, angle + 145, False)
    draw_line(feather_num * feather_gap, angle, False)
    draw_line(feather_length, angle + 145 + 180, False)
    for i in range(feather_num):
        draw_line(feather_gap, angle + 180, False)  # 箭柄，不折返
        draw_line(feather_length, angle - 145, True)  # 羽翼，要折返
    draw_line(feather_length, angle - 145, False)
    draw_line(feather_num * feather_gap, angle, False)
    draw_line(feather_length, angle - 145 + 180, False)


# 画一箭穿心,最后箭的头没有画出来，用海龟来代替
def arrow_heart(x, y, size):
    go_start(x, y, False)
    draw_heart(size * 1.15)
    turtle.setheading(-150)
    turtle.penup()
    turtle.fd(size * 2.2)
    draw_heart(size)
    turtle.penup()
    turtle.setheading(150)
    turtle.fd(size * 2.2)
    turtle.color('black')
    draw_feather(size)
    turtle.pensize(4)
    turtle.setheading(30)
    turtle.pendown()
    turtle.fd(size * 2)
    turtle.penup()
    turtle.setheading(29)
    turtle.fd(size * 5.7)
    turtle.color('black')
    turtle.pensize(4)
    turtle.pendown()
    turtle.fd(size * 1.2)


# 显示倒数3,2,1
def draw_0(i):
    turtle.speed(0)
    turtle.penup()
    turtle.hideturtle()  # 隐藏箭头显示
    turtle.goto(-50, -100)
    turtle.color('red')
    turtle.write(i, font=('宋体', 200, 'normal'))
    time.sleep(1)


# 显示文字
def draw_1():
    turtle.penup()
    turtle.hideturtle()  # 隐藏箭头显示
    turtle.goto(-250, 0)
    turtle.color('red')
    turtle.write('小宝贝，接招', font=('宋体', 60, 'normal'))
    time.sleep(2)


# 显示发射爱心的小人儿
def draw_2():
    turtle.speed(3)
    draw_people(-250, 20)
    turtle.penup()
    turtle.goto(-150, -30)
    draw_heart(14)
    turtle.penup()
    turtle.goto(-20, -60)
    draw_heart(25)
    turtle.penup()
    turtle.goto(205, -100)
    draw_heart(43)
    turtle.hideturtle()
    time.sleep(2)


def draw_3():
    turtle.penup()
    turtle.hideturtle()  # 隐藏箭头显示
    turtle.goto(-220, 50)
    turtle.color('red')
    turtle.write('💕不离', font=('宋体', 60, 'normal'))
    turtle.penup()
    turtle.goto(0, -50)
    turtle.write('不弃💕', font=('宋体', 60, 'normal'))
    time.sleep(2)


# 显示一箭穿心
def draw_4():
    turtle.speed(10)
    turtle.penup()
    turtle.goto(-210, -200)
    turtle.color('blue')
    turtle.pendown()
    turtle.write('SY      LQF', font=('wisdom', 50, 'normal'))
    turtle.speed(1)
    turtle.penup()
    turtle.color("red")
    turtle.goto(-31, -200)
    turtle.write('❤', font=('wisdom', 50, 'normal'))
    arrow_heart(20, -60, 51)
    turtle.showturtle()


number = [3, 2, 1]  # 储存显示界面倒数数字1,2,3

if __name__ == '__main__':
    turtle.setup(900, 500)  # 调画布的尺寸
    for i in number:
        draw_0(i)
        clear_screen()
    draw_1()
    clear_screen()
    draw_2()
    clear_screen()
    draw_3()
    clear_screen()
    draw_4()
    turtle.done()

二、代码详情

2.1 定义了清屏 clear_screen 函数

def clear_screen():
    turtle.penup()  # 画笔抬起
    turtle.goto(0, 0)  # 定位到（0，0）
    turtle.color('white')
    turtle.pensize(800)  # 画笔粗细
    turtle.pendown()  # 画笔落下
    turtle.setheading(0)  # 设置朝向
    turtle.fd(300)  # 前进
    turtle.bk(600)  # 后退

2.2 初始化海龟位置的go_start 函数

def go_start(x, y, state):
    turtle.pendown() if state else turtle.penup()
    turtle.goto(x, y)

2.3 画线的 draw_line 函数

# 根据参数决定海龟是否回到原点。
def draw_line(length, angle, state):
    turtle.pensize(1)
    turtle.pendown()
    turtle.setheading(angle)
    turtle.fd(length)
    turtle.bk(length) if state else turtle.penup()
    turtle.penup()

2.4 绘制发射爱心的小人的 draw_people 函数

通过一系列的移动和绘制操作，勾勒出了一个可爱的小人形象。

def draw_people(x, y):
    # 此处为详细的绘制小人的代码

2.5 绘制爱心的 draw_heart 函数

设置的角度和移动，画出了美丽的爱心形状。

def draw_heart(size):
    # 此处为绘制爱心的具体代码
```python

## 2.6 绘制箭羽的 `draw_feather` 函数

循环和角度控制，绘制出了箭羽的部分。

```python
def draw_feather(size):
    # 此处为绘制箭羽的具体代码

2.7 绘制一箭穿心的 arrow_heart 函数

运用了前面的函数，构建出了浪漫的一箭穿心图案。

def arrow_heart(x, y, size):
    # 此处为绘制一箭穿心的具体代码

2.8 其他函数

用于显示倒数数字、文字和特定图形的函数，如 draw_0、draw_1、draw_2、draw_3 和 draw_4 。

通过一个循环，依次显示倒数数字 3、2、1，并进行清屏。

for i in number:
    draw_0(i)
    clear_screen()

三、效果

动态，可在里面修改一些文字