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A turtle graphics implementation for R7RS Scheme

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turtle-r7rs
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Jason K. MacDuffie 750793d369 fix a bug in circle преди 6 месеца
client 8c49cbb436 remove debug code преди 7 месеца
examples 33f46f2e95 correct threeshapes преди 7 години
server 3088d08556 make gauche server look closer to kawas преди 7 месеца
.gitignore 49c39a8d2f write a quick library for kawa turtle преди 7 години
LICENSE ee9eb19ace I never set the license apparently! This is GPLv3+ преди 8 години
README.md 65a0cb16a3 update readme преди 3 години
canvas.gauche-tk.scm 6dba309d33 add dummy code for gauche tk to handle multiple canvases преди 3 години
canvas.gauche-web.scm 33dae72746 define procedure called wait a moment преди 3 години
canvas.guile-web.scm 2cd8d0af6e add guile-web client преди 3 години
canvas.kawa-web.scm 33dae72746 define procedure called wait a moment преди 3 години
canvas.sld 6b918a45fb make guile primary преди 3 години
physics.sld 86df361c51 move physics up преди 3 години
screenshot.png 8a9eb5c631 Add a screenshot преди 9 години
simple.sld 750793d369 fix a bug in circle преди 6 месеца
syntax.sld b2a3919002 Add a max-recur syntax преди 2 години
turtle3.body.scm 40db935231 fix bug in face! преди 6 месеца
turtle3.sld 59ebb1564d add correct implementation of face! преди 1 година
vector.sld 4ac687fba1 add vector-angle преди 6 месеца
web-client.scm c72c6972fb remove any default commands преди 3 години

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.

There is also effort to unify the use of the web front-end for multiple implementations.

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.