Impersonating Logo with Emacs Lisp—07 Jul 2014

Ray Puzio

Ray will show us his implementation of turtle graphics in emacs and take us under the shell to see how it works. Turtle graphics are a way of drawing pictures in which one provides a series of directions such as “move forward” or “turn left” to steer the pen. (The name comes from the fact that the original implementation involved a robotic turtle as output device controlled by the computer.) In addition to providing a useful and entertaining program, this talk will also discuss techniques of pbm graphics and the use of a buffer for drawing which are of general use when doing graphics in emacs.

Ray has posted his notes and code.

WebM (52.6 MB) | MP4 (293.6 MB)