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programming-in-scheme: Ports of exercises from "Programming in Scheme" (1987) to CHICKEN


Size Path
232 circle-squared.egg
4162 circle-squared.scm
9132 interactive.scm


Adaptation of the Circle² program from chapter "Sample Projects II". Additionally to the original batch version there's an interactive demo using the SDL2 egg. Drawing is performed with Kooda's cairo egg using CGA color.

Interactive controls

Key Function
q, ESC Quit
<left>, <right> Adjust x
<up>, <down> Adjust y
<pgup>, <pgdn> Adjust sq-length
s Screenshot
t Toggle status line