Flags
The world is full of countries, each with its own unique identifier, in the form of a beautiful flag. Your job is to create the flags of the following countries by composing shapes onto a scene.
1 Task
Vietnam
Chile
Suriname
Tunisia
Saint Lucia
2 Example
Japan!
(place-image |
(circle 35 "solid" "red") |
100 50 |
(rectangle 200 100 "solid" "white")) |
Note: The black bounding box is shown only to delimit the image from the rest of the page. It is not being generated by the code above!
You can use either place-image or overlay (or any of their variations, such as overlay/align) to position your images. Pick whichever is easier. They each have their strengths and weaknesses.
3 Precision
to get you on a schedule of doing supplemental homework
to learn that you can very easily create images, and do fun things with surprisingly little
to understand that Racket treats images as values just like it does numbers, strings, lists, and other things you will learn about this semester
4 Language
Make sure you’re in the Beginning Student language. To change it, go to the Language menu and select Choose Language... .
5 Image Teachpack
If you have installed a cs017 Teachpack, you will want to disable it; therefore, remove it from your list of Teachpacks (Language menu, Clear All Teachpacks).
Go to the Language menu, select Add Teachpack..., and choose 2htdp/image.rkt from the middle column.
6 Handing In
Using the file navigator, go to your cs019 directory within your home directory. (If it doesn’t exist, create it using the Unix command mkdir.) In it, make a new directory called flags (again, using mkdir). Put your solution, which should be named flags.rkt, inside that directory. Open the terminal and paste the following two commands (on separate lines, press enter after each):
cd ~/course/cs019/flags |
cs019_supp_handin flags |
Note that you may use a different command than used for CSCI 0170, because the homeworks are being graded by different people.