Lisp / X Demo

Demonstration of Interactive X Graphics from Lisp

This is a demo of the X Interface for Gnu Common Lisp which is available as free software under the Gnu General Public License from ftp.ma.utexas.edu

When the demo is started, a window is created and some things are drawn in it. A menu of options is presented; select an option and then click the mouse one or more times inside the graphics window.

The code is fairly simple.

You must have the Java virtual machine installed to run this demo; you can get it for Windows (msjavx86.exe) here.

The best things in life are free: this demo uses the free software Gnu Common Lisp (GCL), XGCL, X windows [see also XFree86], Java, and WeirdX, a Java implementation of an X server.

Instructions

If needed, edit your display name. It should end in :2.0, for example, myterminal.cs.utexas.edu:2.0
Click to start the demo. Scroll down to see the interaction window below.

This is a demo of the X Interface for Gnu Common Lisp which is available as free software under the Gnu Public License.

A window is created and some things are drawn in it. A menu of options is presented; select an option and then click the mouse one or more times inside the graphics window. The options are:

Point: Click the mouse in the window; returns that point.
Line: Click the mouse for the start point and end point of the line; returns the two points.
Box: Position a small box within the window.
Region: Click twice for the corners of a rectangular box, then position the box.
The code is fairly simple.
Gordon S. Novak Jr.