Python: Drawing Regular Polygons (TI-84 CE Python, Numworks)
Introduction
The following scripts uses the Turtle module to draw regular polygons. It turns out that every set of commands is slightly different in every calculator.
For instance, there are no color names in the TI-84 Plus CE Python but they are present in Numworks.
Also, the turtle module needs a t. (t-point) suffix of all turtle commands for the TI-84 Plus CE Python. The Numworks turtle module does not need a suffix.
TI-84 Plus CE Python: dpolygon.py
from turtle import *
t=Turtle()
# initialization
s=60
n=int(input("# of sides? "))
# angle
a=180*(n-2)/n
# set turtle for TI-84
# color
k=-1
while k<0 or k>4:
print("Choose Color")
print("0. blue")
print("1. red")
print("2. green")
print("3. orange")
print("4. indigo")
k=int(input())
if k==0:
t.pencolor(0,0,255)
if k==1:
t.pencolor(255,0,0)
if k==2:
t.pencolor(0,192,0)
if k==3:
t.pencolor(255,165,0)
if k==4:
t.pencolor(75,0,130)
t.clear()
# setup
t.penup()
t.left(180)
t.forward(60)
t.left(90)
t.forward(60)
t.left(90)
# draw the polygon
t.pendown()
for i in range(n):
if n>6:
t.forward(s/2)
else:
t.forward(s)
t.left(180-a)
t.done()
Numworks Python: dpythonnw.py
from math import *
from turtle import *
# initialization
s=60
n=int(input("# of sides? "))
# angle
a=180*(n-2)/n
# set color numworks
k=-1
l=['blue','red','green','orange','purple']
while k<0 or k>4:
print("Choose Color")
print("0. blue")
print("1. red")
print("2. green")
print("3. orange")
print("4. purple")
k=int(input())
col=l[k]
# setup
penup()
left(180)
forward(60)
left(90)
forward(60)
left(90)
# draw the polygon
pendown()
color(col)
for i in range(n):
if n>6:
forward(s/2)
else:
forward(s)
left(180-a)
Until next time,
Eddie
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