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--- notes:cprog:fall2023:projects:gtf0 [2023/09/04 20:42] – [BUILD THE CODE] abowes2
+++ notes:cprog:fall2023:projects:gtf0 [2023/09/07 01:47] (current) – [DRAWING A LINE] xcroft
@@ Line 24: / Line 24: @@
 Once it's compiled, there is now an executable called gtf0. Do the following, <blockquote> ./gtf0 </blockquote> There will now be a gtf0.png file.
+Alternatively, if you want to use the "make" command to compile, you need to install the gd library.
+download the latest version, and extract the files using:
+tar -xf (file name).tar.gz
+Then cd into the file name, type ./configure to configure the archive
+Then type "make"
+The type "sudo make install" to finish installing the library.
+This isn't needed but knowing how to install packages and libraries may be useful in the future
 =====VIEW THE IMAGE=====
 One way to view the image is to go to the folder through file explorer where you put the image and view it from there.
@@ Line 46: / Line 54: @@
 ====DRAWING A LINE====
+Command for a Line is gdImageLine (image, x, y, x^2, y^2, color);
 ====DRAWING A RECTANGLE====
+Command is gdImageRectangle (image, x, y, x^2, y^2, color);
 ====FILLING AN ENCLOSED SPACE====
+Do  gdImageFill (image, x, y, color);
 ====DRAWING A FILLED RECTANGLE====
@@ Line 58: / Line 67: @@
 <blockquote> gdImageFilledRectangle (image, x, y, x2, y2, color); </blockquote>
 ====DRAWING A CIRCLE====
+gdImageArc (image, center point X, center point Y, diameter X, diameter Y, Angle start, angle end, color);
+Make sure the diameter X and Y are the same, as this makes a perfect circle
 ====DRAWING AN ELLIPSE====
+gdImageArc (image, center point X, center point Y, diameter X, diameter Y, Angle start, angle end, color);
+Make sure the diameter x and y are different integers, as this stretches the circle on the larger side making an ellipse.

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