Assignment #6 - Stamper
Submission and Grading Instructions:
- Read all the assignment specifications carefully.
- All assignments are designed to use only the features of Processing we’ve discussed so far to test your understanding of the material presented in class. Files using features that we have not covered in the lecture will be flagged as cheating. For example, you can never use the function translate.
- You cannot use generative AI to help you solve any part of the assignment.
- If you have questions, you must ask the instructor or the TAs. You cannot search for the answer on Google nor use YouTube videos or any other material not provided by us.
- Turn in the file(s) as described in the following specifications to Gradescope before the due date. Make sure to name the file exactly as this document specifies.
- You must use Gradescope as a backup. Upload to Gradescope frequently, and if you ever have issues with your computer, you can get your latest code by downloading your program from Gradescope.
- You should follow the coding style guidelines covered in the lecture. That means using proper comments and blank lines to separate the key parts of your code, proper indentation, variable names should be well-chosen, and using camelCase.
Specification of Assignment
In this assignment, you will write a simple stamp-based drawing program. In this program, the user can use these stamps to draw pictures on the screen by selecting three different kinds of stamps and four colors.
Initially, the canvas should be square (1 point) with a blank, dark grey, or black background (1 point). Nothing should happen when you move the mouse around the canvas without clicking. One of the three stamps will follow your mouse when you click down (3 points). The default stamp is a happy face, and the default color is red (1 point).
There are three possible stamps that the user can select: a face, a target, or an arrow.
- The face should have two eyes, a nose made of a triangle, and a mouth with a thin black stroke (1 point).
- The target should be three concentric circles with a thick black stroke made using arrays and a recursive function (1 point).
- The arrows should be two triangles and a rectangle, with a medium-thickness white stroke (1 point).
The user should be able to switch between these by pressing f (for face - 4 points), t (for target - 4 points), and a (for arrows - 4 points).
The user can also change the color of the stamps with the r, g, b, and p keys (for red, green, blue, and purple keys, respectively - 3 points per color).
Whenever the user selects a color or stamp by pressing a keyboard key, your program should remember this setting until the stamp/color is changed again (3 points).
It should not just take effect while it is being held down.
Also, the user should be able to press the c key to clear the screen (3 points).
Please remember that all assignments should be written without using advanced features to show your understanding of the material presented in class. Any material not covered in the lecture is considered an advanced feature. For example, You must use the keyPressed Boolean Variable to detect key presses. Do not use the keyPressed function. The assignment will be graded as Zero if you use any feature that has not been covered in the lecture. Use the slides to reference the topics that we have covered.
Comments and Programming Style
Name the file stamper.pde (2 points). This will be automatically checked by the autograder when you upload the file to Gradescope.
Each program file should have a header comment at the top that has the following format (1 point):
/* Author: Student Name
* Description:
* A short description of what this program does!
*/
To help with readability, indent and separate the code that creates the main shapes in your program with a blank line and include a comment that describes the shape(s) being created (2 points).
For example,
// check for key presses
// if the 'f' key is pressed, draw a face