A turtle graphics implementation for R7RS Scheme

Jason K. MacDuffie 2e3962e116 seems I need the sleep or it goes a bit out of control 5 年之前
examples 33f46f2e95 correct threeshapes 7 年之前
server 63b42a719d parse the json properly 5 年之前
.gitignore 49c39a8d2f write a quick library for kawa turtle 7 年之前
LICENSE ee9eb19ace I never set the license apparently! This is GPLv3+ 9 年之前
README.md e0663f918d update the readme to reflect kawa implementation 7 年之前
canvas.gauche.scm c8c22535ad rename clearscreen to clear-screen 7 年之前
canvas.kawa.scm 2e3962e116 seems I need the sleep or it goes a bit out of control 5 年之前
canvas.sld c4c2ffeca2 correct the imports 5 年之前
screenshot.png 8a9eb5c631 Add a screenshot 9 年之前
simple.sld 29fc6246bf fix some old references 7 年之前
syntax.sld 8f118c7e61 Rename *.scm to *.sld 9 年之前
turtle3.body.scm 29fc6246bf fix some old references 7 年之前
turtle3.sld 57ffd3e77e rename turtle-init to make-turtle 7 年之前
vector.sld 8f118c7e61 Rename *.scm to *.sld 9 年之前

README.md

Turtle R7RS

This library is for turtle graphics implemented in R7RS Scheme. Because there is no portable way to implement graphics, the code was made modular enough to have multiple front-ends. For Gauche, gauche-tk is used. For Kawa, the built-in HTTP server is used to send instructions to a browser front-end.

YASOS is a dependency to allow extending the turtle.

Screenshot

Here is a picture of the "dragon" curve.

dragon curve

License

You may redistribute or modify this library under the terms of the GNU GPLv3, or any later version. See LICENSE for details.