IERG2080代做、代写C/C++程序语言

日期：2024-05-18 07:58

IERG2080 Spring 2024

Project Due: 17 May 2024

Rules:

1. This project takes 10% of the course total.

2. Your code will be compiled and tested in theVM. 0 score if the code cannot be

compiled in the VM.

3. No late submission is allowed.

4. This is a group project. Only one member submitting the work to Blackboard is

required.

In this project, you are going to write a simple 2D bitmap editor. You will use a library called

ncurses that provides API for direct keyboard inputs, absolute screen coordinates for

full-screen outputs, etc.

To compile the demo that illustrates how to use ncurses, you need to install the library first.

In your VM, run

sudo apt install libncurses-dev

After installation, you can now compile the example code by

gcc curses_demo.c -o curses_demo -lcurses

The flag -lcurses asks the linker to link with the library named curses. Try to understand

the demo code and see how to initialize an ncurses program, how to move a cursor, how to

read the pressed key, etc.

Next, you need to understand the portable bitmap format (PBM). The following is an

example from Wikipedia https://en.wikipedia.org/wiki/Netpbm#PBM_example

P1

# This is an example bitmap of the letter "J"

6 10

0 0 0 0 1 0

0 0 0 0 1 0

0 0 0 0 1 0

0 0 0 0 1 0

0 0 0 0 1 0

0 0 0 0 1 0

1 0 0 0 1 0

0 1 1 1 0 0

0 0 0 0 0 0

0 0 0 0 0 0The first line P1 indicates that the file is a portable bitmap, where each pixel is either 0 or 1

(white or black). The line starts with # is a comment that will be ignored by image readers.

The line 6 10 indicates the size of the image: 6x10 pixels. After that, the binary digits are the

pixel values of the image. Note that the spaces and newlines in the description of the image

body can be omitted. Say, the following example gives the same image as the above one.

P1

# This is an example bitmap of the letter "J"

6 10

000010000010000010000010000010000010100010011100000000000000

To open a pbm file, you need an image editor. In Ubuntu, you can use gimp (GNU Image

Manipulation Program). Install gimp by

sudo apt install gimp

Suppose your program is named proj. The following is the usage of your program.

./proj [in=in_file] [out=out_file]

./proj [out=out_file] [in=in_file]

Both arguments are optional. Yet, the phase in= or out= must be provided if the

corresponding argument is used. in_file is the input file name, and out_file is the output

file name.

Your program provides an interface for a user to draw a 2D bitmap image. Here are the

descriptions. Each item takes 1 point (full score 10 points).

1. If in_file is supplied, load the file. If the file is not a 80x24 PBM, print an error

message and terminate the program.

2. Initialize curses. Change the terminal size to 80x24 (width 80, height 24). Turns on

REVERSE video mode attribute (black characters on a white background).

3. If in_file is not supplied, fill the whole screen with spaces to show a full reverse

background. Otherwise, show the image on the screen. Use # for 1 and a space for

0. For both cases, move the cursor to the top-left corner after the initialization is

done.

4. Let the user move the cursor around using the arrow keys (cannot move beyond the

boundary of the screen).

5. When the user presses the spacebar, draw or erase a # at the location of the cursor.

6. When the user presses ESC, ends the curses environment and recovers the original

terminal settings.

7. If out_file is not supplied, print the image drawn by the user as a PBM format on the

screen using printf. As the terminal size was 80x24, the image size is 80x24. (The

user can copy the printed content to a .pbm file on their own.)

8. If out_file is supplied, save the PBM data to the file. Print an error message if the file

cannot be saved.

9. Create a Makefile so that you can compile your code by make.

10. Make sure that both orders of arguments work as expected.

Write your code in a single .c file. Compress the .c file with the Makefile into a .zip file, and

then submit it to Blackboard.