Read the instructions carefully. Not following the instructions will result in you not getting the credit you want for the assignment.

Learning Outcomes

Add new features to code you already made

New functions that you create call functions you previously made

Avoid writing code with global variables and global code

Take program input from the command line terminal, not keyboard

Structure

Files:

doodle.py

Problem

This project builds on your work from Timmy the Turtle. You will be enhancing it to introduce more complexity into the shapes drawn by the turtle.

The project involves:

Drawing Complex Shapes: You will compose complex shapes using the basic shapes you have already been drawing. For example, a house can be drawn using squares and triangles. Such a house function would call the square and triangle functions you already made.

Scaling Factors: You will use scaling factors to draw shapes of different sizes. This allows you to create a small house or a large house using the same code. You can scale values in two ways: $1)$ you can scale the values that get passed to a function that draws some shape, or $2)$ you can pass a scaling parameter to the function and scale the code inside the function. You choose.

Input: Your program should take one integer command$-$line parameter in range $\{1,2,3\}$ that changes some aspect of the drawing for each different value.

Remember, you may use any code provided in your book. Also, don$$t hesitate to ask for clarification if you$$re unsure about some resource.

Key Program Requirements and Grading

While you might observe that certain rubrics are being automatically graded, please note that these scores will not be transferred to Canvas until your instructor or TA comprehensively reviews the entire project and manually assigns grades after the deadline ends.

Automatically$-$graded scoring $(45$ points$)$

$(20)$ Picture: Your code generates an image when we test it$.$

$(15)$ Functions: If we count $3$ basic shape functions $+1$ main function $+2$ functions for $2$ different complex shapes then your program should have at least $6$ functions. You could have more, but you should not have less.

$(5)$ Main function: your top$-$level code is in the main function.

$(5)$ No global variables: all variables are defined inside main or another function. No global variables.

Manually graded scoring $(55$ points$)$

$(20)$ Complex Shapes: Your drawing includes several complex shapes of different sizes and colors.

$(20)$ Scaling: Use a scaling factor to make drawing different sizes easier.

$(10)$ Input: The program takes one command line parameter, which alters the scene in some way

$(5)$ Snake Case All variable names and the code follows Python snake case or camelcase.

Use the following snippet of code to implement conditional execution of main. Don$$t make any calls that keep the turtle window open in main$().$ Instead call turtle.done$()$ after main$()$ as given here:

if $\_\_$name$\_\_=="\_\_$main$\_\_"$:

main$()$

turtle.done$()$