def star (size,color): t.color(color) t.begin_fill()#如何填充颜色 for i in range(5): t.forward(size) t.left(72) t.forward(size) t.right(144) t.end_fill()#解释下这段代码,和用到函数
时间: 2024-03-28 22:36:46 浏览: 12
这段代码定义了一个名为`star`的函数,该函数接受两个参数:`size`和`color`。函数中使用了`t`这个名为turtle的库来绘制一个五角星。具体流程如下:
1. 设置画笔颜色为传入的`color`参数。
2. 开始填充颜色。
3. 使用循环语句绘制五角星的五个顶点,每个顶点之间夹角为72度。
4. 在绘制完五角星后结束填充颜色。
该函数的作用是绘制一个指定大小和颜色的五角星。如果需要绘制多个不同颜色或大小的五角星,只需在调用该函数时传入不同的参数即可。使用函数的好处是可以避免重复编写相同的绘制代码,提高程序的可读性和可维护性。
相关问题
import turtle # 创建一个窗口和画笔对象 window = turtle.Screen() pen = turtle.Turtle() # 设置画笔的初始位置和形状 pen.penup() import turtle def draw_star(size, points, color, x, y): angle = 360 / points outer_angle = 180 - angle turtle.penup() turtle.goto(x, y) turtle.pendown() turtle.color(color) turtle.begin_fill() for i in range(points): turtle.forward(size) turtle.right(outer_angle) turtle.forward(size) turtle.right(180 - angle) turtle.end_fill() draw_star(100, 9090, "red", 0, 0) 解释一下
Hello! It looks like you have imported the Python module "turtle". This module allows you to create turtle graphics, which are a way of drawing images using a turtle that moves around on the screen.
If you would like to create a turtle and start drawing, you can use the following code:
```
import turtle
# create a turtle
my_turtle = turtle.Turtle()
# move the turtle forward by 100 units
my_turtle.forward(100)
# turn the turtle left by 90 degrees
my_turtle.left(90)
# move the turtle forward by 100 units again
my_turtle.forward(100)
# close the turtle window
turtle.done()
```
This code will create a turtle, move it forward by 100 units, turn it left by 90 degrees, move it forward by 100 units again, and then close the turtle window. You can experiment with different commands and values to create different shapes and patterns!
from turtle import * def star(center_point,first_vertex,radius): """根据圆心坐标及其第一个顶点坐标绘制五角星""" up() seth(0) goto(center_point) angle = towards(first_vertex) goto(first_vertex) lt(angle) rt(90) # 确定五个顶点坐标 five_vertex_points = [first_vertex] for _ in range(4): circle(-radius,360/5) five_vertex_points.append(pos()) # 开始绘制五角星 goto(first_vertex) color('yellow') down() begin_fill() for index in range(len(five_vertex_points)): goto(five_vertex_points[(index*2)%len(five_vertex_points)]) goto(first_vertex) end_fill() def China_Flag(height,start_x = None,start_y = None): tracer(0) # 设置高宽 width = (height / 2) * 3 if start_x is None and start_y is None: # 设置绘制起点 start_x = -(width/2) start_y = -(height/2) up() goto(start_x,start_y) down() # 绘制矩形旗面 setheading(0) color('red') begin_fill() for i in range(2): fd(width) lt(90) fd(height) lt(90) end_fill() # 确定五颗星的中心坐标 five_star_center_points = [(start_x+width/2/15*5,start_y+(1/2+5/20)*height), (start_x+width/2/15*10,start_y+(1/2+8/20)*height), (start_x+width/2/15*12,start_y+(1/2+6/20)*height), (start_x+width/2/15*12,start_y+(1/2+3/20)*height), (start_x+width/2/15*10,start_y+(1/2+1/20)*height),] # 确定五颗星的第一个顶点坐标 big_radius = height/2/10*3 # 大五星外接圆半径 small_radius = height/2/10 # 小五星外接圆半径 up() goto(five_star_center_points[0]) setheading(90) fd(big_radius) p = pos() first_vertex_points = [p] # 第一个顶点坐标 for point in five_star_center_points[1:]: goto(point) seth(0) angle = towards(five_star_center_points[0]) lt(angle) fd(small_radius) first_vertex_points.append(pos()) up() # 绘制五角星 # 大五角星 star(five_star_center_points[0], first_vertex_points[0], big_radius) # 4个小五角星 for i in range(1,5): star(five_star_center_points[i],first_vertex_points[i],small_radius) if __name__ == '__main__': screensize(600, 400) # 画布大小 bgcolor('black') # 背景颜色为黑色 speed(0) # 速度为最快 China_Flag(192,50,15) hideturtle() done()
这段代码是使用Python中的turtle库来绘制五角星的函数。函数的参数包括圆心坐标、第一个顶点坐标和半径。函数内部使用了turtle库中的一些函数来实现绘制五角星的功能,包括up()、seth()、goto()、towards()、lt()和rt()等。