Question

Write a python program that will allow a user to draw by inputting commands. The program will load all of the commands first (until it reaches command "exit" or "done"), and then create the drawing.

Must include the following:

change attributes:

• color [red | green | blue]

• width [value]

• heading [value]

• position [xval] [yval]

drawing:

• draw_axes

• draw_tri [x1] [y1] [x2] [y2] [x3] [y3

• draw_rect [x] [y] [b] [h]

• draw_poly [x] [y] [n] [s]

• draw_path [path]

random

• random [color | width | heading | position]

  • e.g. "random color" would set turtle to a random drawing color

Heres my starter code:

import turtle

#================ command loading =================

lines = [] #initialize empty list

# load up all commands into the list
def load_commands():
  
while(1):
  
line = input('>')
  
words = line.split()
if words[0] == 'exit':
break
  
lines.append(line)

#============== turtle drawing functions ============

def draw_rect(alex, x, y, b, h):
alex.pu()
alex.goto(x,y)
alex.pd()
  
for i in range(2):
alex.fd(b)
alex.lt(90)
alex.fd(h)
alex.lt(90)
  
#==================== process commands (do the drawing)======

def process_commands():
  
# ------ initialize turtle stuff ----------------
  
turtle.TurtleScreen._RUNNING=True
  
wn = turtle.Screen() # Set up the window and its attributes
wn.bgcolor("lightgreen")
wn.title("Alex meets a function")
  
alex = turtle.Turtle() # Create alex
  
#-----------------------------------------
  
# process each line and draw
for line in lines:
  
words = line.split()
  
if words[0] == "draw_rect":
x = int(words[1])
y = int(words[2])
b = int(words[3])
h = int(words[4])
draw_rect(alex,x,y,b,h)
  
  
wn.exitonclick()
  
#================== MAIN ======================
  
def main():
print("loading commands")
load_commands()
print("drawing")
process_commands()
  

main()

Answer 1

PROGRAM:

OUTPUT:

SUMMARY:

Program to load commands and draw based on the commands .

Step1: Load commands()

• load the command to list till exit or done

Step2: Process command()

• Set the turtle window and the turtle object
• Iterate through each command
• command is divided into 3 - change attributes, drawing and random
• Change attributes:
  • Set position - using got(x,y)
  • Set color - using turtle.color(color)
  • Set width - using turtle.width(width)
• Drawing:
  • draw rectangle - xpos,ypos, width and height (90 degree turn)
  • draw triangle - 3 points (120 degree turn )
  • draw polygon - n sides( 360/side degree turn)
  • draw path - (length)
• Random
  • To use random import random module
  • Set color - shuffle the colorlist - red ,blue, and green - select the one
  • Set position - using randint(start,end) - generate number between start and end
  • Set width - similarly using randint(start,end)

Step 3: Show the final result