如何绘制n个边的多边形，m次

Question

我是Python编程的新手，我有一个任务来开发一个简单的程序，绘制n个边的多边形m次，使得边的最左边下一个多边形触摸上一个多边形的最右边。下面的代码根据用户输入的边数和多边形应显示的次数绘制一个多边形。

import turtle 

def myTurtle(): 
    num_side = raw_input("Enter the number of sides: ") 
    num_shap = raw_input("Enter the number of shapes: ") 
    num_sides = int(num_side) 
    num_shape = int(num_shap) 
    window = turtle.Screen() 
    window.bgcolor("red") 

    polygon = turtle.Turtle() 
    polygon.penup() 
    polygon.goto(-200, 200) 
    polygon.pendown() 
    side_length = 60 
    angle = 360.0 // num_sides 
    n = 0 

    for j in range(0, num_shape): 
    polygon.forward(side_length) 
    for i in range(num_sides): 
     polygon.pencolor("black") 
     polygon.forward(side_length) 
     polygon.right(angle) 
    n += side_length  
window.exitonclick() 

myTurtle() 

我现在面临的问题是让下一个多边形转到上一个多边形的旁边。

---

我已经能够拿出一个更好，但仍然没有一个完美的解决方案。只是一些相互接触的多边形。我怎样才能做到这一点？

import turtle, math 

def find_lenth(radius, sides): 
    angle = float(360/sides) 
    otherangle = float((180 - angle)/2) 
    radangle = float(angle * (math.pi/180)) 
    radangle2 = float(otherangle * (math.pi/180)) 
    angles = math.sin(radangle)/math.sin(radangle2) 
    lenth = radius * angles 
    return lenth  

def myTurtle(): 
    num_side = raw_input("Enter the number of sides: ") 
    num_shap = raw_input("Enter the number of shapes: ") 
    num_sides = int(num_side) 
    num_shape = int(num_shap) 
    window = turtle.Screen() 
    window.bgcolor("red") 
    polygon = turtle.Turtle() 
    radius = 60 
    side_length = find_lenth(radius, num_sides) 
    angle = 360.0 // num_sides 
    delta = radius*2 #this value you must count 
    colors = ['blue','white','black','green'] 
    for i in range(num_shape): 
    polygon.penup() 
    polygon.goto(-400+delta*i, 200) 
    polygon.pendown() 
    polygon.pencolor(colors[i%4]) 
    n = 0 
    for j in range(num_sides): 
     polygon.forward(side_length) 
     polygon.right(angle) 
    window.exitonclick() 

if __name__ == '__main__': 
    myTurtle() 

Answer 1

此代码会绘制一些多边形。为了将指针移动到正确的像素值，您需要对其进行计数。

import turtle 

def myTurtle(): 
    num_side = raw_input("Enter the number of sides: ") 
    num_shap = raw_input("Enter the number of shapes: ") 
    num_sides = int(num_side) 
    num_shape = int(num_shap) 
    window = turtle.Screen() 
    window.bgcolor("red") 
    polygon = turtle.Turtle() 
    side_length = 60 
    angle = 360.0 // num_sides 
    delta = side_length*3 #this value you must count 
    colors = ['blue','white','black','green'] 
    for i in range(num_shape): 
     polygon.penup() 
     polygon.goto(-400+delta*i, 200) 
     polygon.pendown() 
     polygon.pencolor(colors[i%4]) 
     n = 0 
     for j in range(num_sides): 
      polygon.forward(side_length) 
      polygon.right(angle) 
    window.exitonclick() 

if __name__ == '__main__': 
    myTurtle()