Program Implementation

Section 18.6 Program Implementation - 4

We are finally ready to add a roof! This version of the program has added a drawRoof, but the procedure is missing its body. Try writing the body of drawRoof.

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If you make the roof a 30, 120, 30 triangle, the two upper sides should be 173 long.
Make sure to use begin_fill and end_fill in your procedure. Without them, the triangle will not get filled in.
You don’t have to draw the bottom edge of the roof since there is already a line there.

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Notice we have commented out the tests for the doors and windows. There is no need to run that code while you are working on the roof.

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Checkpoint 18.6.1.

Implement the drawRoof procedure

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def rectangle(turtle, width, height):
    # Assumes turtle faces East to start with
    turtle.pendown()
    turtle.begin_fill()
    turtle.forward(width)
    turtle.right(90)
    turtle.forward(height)
    turtle.right(90)
    turtle.forward(width)
    turtle.right(90)
    turtle.forward(height)
    turtle.right(90)
    turtle.end_fill()
    turtle.penup()

def drawWall(turtleName):
    turtleName.fillcolor("tan")
    rectangle(turtleName, 300, 200)

def drawDoor(turtleName):
    turtleName.fillcolor("black")
    rectangle(turtleName, 50, 100)

def drawWindow(turtleName):
    turtleName.fillcolor("light blue")
    #first row
    rectangle(turtleName, 25, 25)
    turtleName.forward(25)
    rectangle(turtleName, 25, 25)
    turtleName.backward(25)
    #reposition
    turtleName.right(90)
    turtleName.forward(25)
    turtleName.left(90)
    #second row
    rectangle(turtleName, 25, 25)
    turtleName.forward(25)
    rectangle(turtleName, 25, 25)

def drawRoof(turtleName):
    turtleName.fillcolor("brown")
    # add code here!!!

# main program
from turtle import *
steve = Turtle()
steve.speed(0)
steve.penup()
steve.goto(-150, 50)
drawWall(steve)
#steve.goto(-25, -50)
#drawDoor(steve)
#steve.goto(-100, 0)
#drawWindow(steve)
#steve.goto(50, 0)
#drawWindow(steve)

steve.goto(-150, 50)
drawRoof(steve)                # test the drawRoof procedure

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