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pythonpolygonturtle-graphicspython-turtle

Draw polygon in polygons (regular polygons)

This is my code that draws regular polygons:

import turtle

tr = turtle.Turtle()

tr.lt(150)
for x in range(3,13):
    for i in range(x):
        tr.fd(80)
        tr.lt(360//x)

turtle.done()

This is my output: actual output

But my expected output is: expected output

Can you help me?

Solution

  • As already pointed in the comments

    You probably want to move the turtle at thee end of the polygon, so the ends won't be connected

    • @mousetail

    Looks like you need to calculate the radius offset and move in/out from the center if you want them all concentric. Currently you're always starting the first/last vertex at the same point.

    • @CrazyChunky

    After having a quick look in the turtle methods

    I came up with this

    import turtle
import math
tr = turtle.Turtle()

r0 = 20
tr.lt(150)
for x in range(3,13):
    points = [
        (r0 * (x-1) * math.cos(k*2*math.pi/x),
         r0 * (x-1) * math.sin(k*2*math.pi/x))
        for k in range(1,x+1)
    ]
    tr.penup() # avoid creating a line connecting two polygons
    tr.goto(*points[-1])
    tr.pendown() # draw one polygon
    for tx, ty in points:
        tr.goto(tx,ty);
turtle.done()

    PS.: I have never heard about this module before, and it was a surprise to see that it was installed in my machine.