notes:unix:fall2024:projects:gtf0
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| notes:unix:fall2024:projects:gtf0 [2024/09/17 14:37] – [FILLING AN ENCLOSED SPACE] tkastne1 | notes:unix:fall2024:projects:gtf0 [2024/09/20 03:48] (current) – [BUILD THE CODE] mwinter4 | ||
|---|---|---|---|
| Line 2: | Line 2: | ||
| =====GRABIT===== | =====GRABIT===== | ||
| + | Grabit is a tool used to grab projects needed to work on. This will assist you in grabbing most projects we work on throughout the course. Just type in Grabit then place project name in the proper directory for the project. | ||
| + | |||
| + | For example: In your gtf0 directory you would type ' | ||
| =====REPOSITORY STEPS===== | =====REPOSITORY STEPS===== | ||
| + | A public directory is need to be able to view your images from a browser | ||
| + | |||
| + | * Create a public html directory with the following command | ||
| + | < | ||
| + | mkdir -p ~/ | ||
| + | </ | ||
| + | |||
| + | * Allow public permissions on the directory with the following | ||
| + | < | ||
| + | chmod 0711 ~/ | ||
| + | </ | ||
| =====BUILD THE CODE===== | =====BUILD THE CODE===== | ||
| * While in your gtf0 directory use the make command to build the code | * While in your gtf0 directory use the make command to build the code | ||
| Line 13: | Line 27: | ||
| gcc -Wall --std=gnu18 -o gtf0 gtf0.c -lgd | gcc -Wall --std=gnu18 -o gtf0 gtf0.c -lgd | ||
| </ | </ | ||
| + | |||
| + | However, it is not necessary to compile GTF0 for Unix due to the shebang added in the first line: | ||
| + | < | ||
| + | # | ||
| + | </ | ||
| + | As such, you are able to run the file as a C script instead of having to compile the program. Simply run with the command: | ||
| + | < | ||
| + | ./gtf0.c | ||
| + | </ | ||
| + | |||
| + | If you were to remove this however, you would need to compile the program before running. An easy way to make sure this shebang is at the top of your file is with the following: | ||
| + | < | ||
| + | head -n 1 gtf0.c | ||
| + | </ | ||
| + | |||
| + | This is to be runned in the directory that your gtf0.c is in. | ||
| =====RUN THE PROGRAM===== | =====RUN THE PROGRAM===== | ||
| + | |||
| + | Simply enter the command '' | ||
| =====VIEW THE IMAGE===== | =====VIEW THE IMAGE===== | ||
| * Using the mv command, move the resulting image from your gtf0 dir to your public html dir | * Using the mv command, move the resulting image from your gtf0 dir to your public html dir | ||
| Line 27: | Line 59: | ||
| * Replacing USER with your username | * Replacing USER with your username | ||
| =====LIBGD FUNCTIONALITY===== | =====LIBGD FUNCTIONALITY===== | ||
| + | LibGD is a open source code library that allows images to be created with intuitive functionality | ||
| + | |||
| + | To learn more about LibGD you can visit the [[https:// | ||
| + | |||
| + | Below you will find an assortment of function prototypes that will be useful for completing project GTF0. All of these prototypes have been taken from the LibGD documentation as linked above. These specify function names, parameters and their types, and return values. | ||
| ====MIXING A COLOR==== | ====MIXING A COLOR==== | ||
| Before anything can be drawn there needs to be a color to draw it in | Before anything can be drawn there needs to be a color to draw it in | ||
| Line 87: | Line 124: | ||
| [[https:// | [[https:// | ||
| ====DRAWING A FILLED RECTANGLE==== | ====DRAWING A FILLED RECTANGLE==== | ||
| + | < | ||
| + | gdImageFilledRectangle (gdImagePtr im, int x1, int y1, int x2, int y2, int color); | ||
| + | </ | ||
| + | [[https:// | ||
| + | |||
| + | int x1 is the left bound; i.e., the x coordinate for the top left point of the rectangle to be drawn. | ||
| + | |||
| + | int y1 is the upper bound; similarly, this is the corresponding y coordinate for the top left point of the rectangle. | ||
| + | |||
| + | int x2 is the right bound; this will be the x coordinate of the bottom right point of the rectangle, which incidentally will determine height and width of the rectangle. | ||
| + | |||
| + | int y2 is the lower bound | ||
| + | |||
| + | int color is the color the rectangle is drawn as | ||
| + | |||
| + | [[https:// | ||
| ====DRAWING A CIRCLE==== | ====DRAWING A CIRCLE==== | ||
| + | < | ||
| + | gdImageEllipse (gdImagePtr im, int mx, int my, int w, int h, int color); | ||
| + | </ | ||
| + | [[https:// | ||
| + | |||
| + | int mx and int my is the coordinates of the circle center | ||
| + | |||
| + | int w is the horizontal diameter of the circle | ||
| + | |||
| + | int h is the vertical diameter of the circle | ||
| + | |||
| + | w and h must be the same to create a circle | ||
| + | |||
| + | int color is the color the circle is drawn as | ||
| + | |||
| + | [[https:// | ||
| ====DRAWING AN ELLIPSE==== | ====DRAWING AN ELLIPSE==== | ||
| + | < | ||
| + | gdImageEllipse (gdImagePtr im, int mx, int my, int w, int h, int color); | ||
| + | </ | ||
| + | [[https:// | ||
| + | |||
| + | int mx and int my are the coordinates of the ellipse center | ||
| + | |||
| + | int w is the horizontal diameter of the ellipse | ||
| + | |||
| + | int h is the vertical diameter of the ellipse | ||
| + | |||
| + | int color is the color the ellipse is drawn as | ||
| + | [[https:// | ||
notes/unix/fall2024/projects/gtf0.1726583824.txt.gz · Last modified: 2024/09/17 14:37 by tkastne1
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
