import turtle turtle.dot(50) turtle.penup() turtle.goto(0,-40)turtle.pendown()turtle.circle(40)
时间: 2023-10-08 13:08:42 浏览: 60
这是一段 Python 代码,同样使用了 turtle 库来绘制图形。具体来说,这段代码的作用是:
1. 绘制一个大小为 50 的点;
2. 抬起画笔,将画笔移动到坐标 (0, -40) 的位置;
3. 放下画笔,绘制一个半径为 40 的圆。
这段代码的效果是绘制一个在坐标原点处的圆点,并在它下方绘制一个半径为 40 的圆。可以将这两个图形看作是眼睛和脸。
相关问题
修改代码使图中的小圆绕大圆圈的圆心以200圈每秒的速度进行圆周运动:import turtle import math # Set up the turtle screen screen = turtle.Screen() screen.bgcolor("white") screen.title("Circle with Moving Black Dot") # Create the turtle for drawing the circle circle_turtle = turtle.Turtle() circle_turtle.speed(0) circle_turtle.hideturtle() circle_turtle.penup() circle_turtle.goto(0, -80) circle_turtle.pendown() circle_turtle.color("black") circle_turtle.circle(80, 2880) # Create the turtle for drawing the black dot dot_turtle = turtle.Turtle() dot_turtle.speed(0) dot_turtle.hideturtle() dot_turtle.penup() dot_turtle.goto(40, 0) dot_turtle.pendown() dot_turtle.color("black") dot_turtle.begin_fill() dot_turtle.circle(4) dot_turtle.end_fill() # Calculate the angle increment for each frame of animation angle_increment = 1 / 60 # 200 degrees per second, 60 frames per second # Animate the movement of the black dot while True: dot_turtle.clear() angle = dot_turtle.heading() + angle_increment x = 40 * math.cos(math.radians(angle)) y = 40 * math.sin(math.radians(angle)) dot_turtle.goto(x, y) dot_turtle.begin_fill() dot_turtle.circle(6) # 小圆 dot_turtle.end_fill()
可以使用Python的time模块来控制圆周运动的速度,修改代码如下:
```python
import turtle
import math
import time
# Set up the turtle screen
screen = turtle.Screen()
screen.bgcolor("white")
screen.title("Circle with Moving Black Dot")
# Create the turtle for drawing the circle
circle_turtle = turtle.Turtle()
circle_turtle.speed(0)
circle_turtle.hideturtle()
circle_turtle.penup()
circle_turtle.goto(0, -80)
circle_turtle.pendown()
circle_turtle.color("black")
circle_turtle.circle(80, 2880)
# Create the turtle for drawing the black dot
dot_turtle = turtle.Turtle()
dot_turtle.speed(0)
dot_turtle.hideturtle()
dot_turtle.penup()
dot_turtle.goto(40, 0)
dot_turtle.pendown()
dot_turtle.color("black")
dot_turtle.begin_fill()
dot_turtle.circle(4)
dot_turtle.end_fill()
# Calculate the angle increment for each frame of animation
angle_increment = 200 / 60 # 200 degrees per second, 60 frames per second
# Animate the movement of the black dot
while True:
dot_turtle.clear()
angle = dot_turtle.heading() + angle_increment
x = 80 * math.cos(math.radians(angle))
y = 80 * math.sin(math.radians(angle))
dot_turtle.goto(x, y)
dot_turtle.begin_fill()
dot_turtle.circle(6) # 小圆
dot_turtle.end_fill()
time.sleep(1/60) # 控制运动速度
```
在上面的代码中,我们使用了time.sleep()函数来控制小圆的运动速度,将每帧的时间间隔设置为1/60秒。这样,小圆每秒绕大圆圈转200圈,同时每秒刷新60次界面,就可以实现流畅的圆周运动。
import turtle def draw_heart(): turtle.color('red') turtle.begin_fill() turtle.left(140) turtle.forward(180) turtle.circle(-90, 200) turtle.setheading(60) turtle.circle(-90, 200) turtle.forward(180) turtle.end_fill() turtle.speed(0) turtle.penup() turtle.goto(0, 0) turtle.pendown() draw_heart() turtle.hideturtle() turtle.done()在这段代码基础上加个闪烁效果
import turtle
import time
def draw_heart():
turtle.color('red')
turtle.begin_fill()
turtle.left(140)
turtle.forward(180)
turtle.circle(-90, 200)
turtle.setheading(60)
turtle.circle(-90, 200)
turtle.forward(180)
turtle.end_fill()
turtle.speed(0)
turtle.penup()
turtle.goto(0, 0)
turtle.pendown()
while True:
draw_heart()
time.sleep(0.5)
turtle.clear()
time.sleep(0.5)
turtle.hideturtle()
turtle.done()