Logo Turtle Graphics for the Lisp Machine
Name
AI_WP_214.pdf
Description
Main article
Size
1.11 MB
Format
Adobe PDF
Checksum (MD5)
c0840dae4f83df066566487dca15a762
Author(s)
Lieberman, Henry
Date Issued
May 5, 1981
Publisher
MIT Artificial Intelligence Laboratory
Series/Report no.
MIT Artificial Intelligence Laboratory Working Papers, WP-214
Abstract
This paper is a manual for an implementation of Logo graphics primitives in Lisp on the MIT Lisp Machine. The graphics system provides:
Simple line drawing and erasing using "turtle geometry"
Flexible relative and absolute coordinate systems, scaling
Floating point coordinates
Drawing points, circles, boxes, text
Automatically filling closed curves with patterns
Saving and restoring pictures rapidly as arrays of points
Drawing on color displays, creating new colors
Three dimensional perspective drawing, two-color stereo display
Persistent DSpace Link
