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A turtle graphics implementation for R7RS Scheme

Rama: master
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turtle-r7rs
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Jason K. MacDuffie 750793d369 fix a bug in circle hai 6 meses
client 8c49cbb436 remove debug code hai 7 meses
examples 33f46f2e95 correct threeshapes %!s(int64=7) %!d(string=hai) anos
server 3088d08556 make gauche server look closer to kawas hai 7 meses
.gitignore 49c39a8d2f write a quick library for kawa turtle %!s(int64=7) %!d(string=hai) anos
LICENSE ee9eb19ace I never set the license apparently! This is GPLv3+ %!s(int64=8) %!d(string=hai) anos
README.md 65a0cb16a3 update readme %!s(int64=3) %!d(string=hai) anos
canvas.gauche-tk.scm 6dba309d33 add dummy code for gauche tk to handle multiple canvases %!s(int64=3) %!d(string=hai) anos
canvas.gauche-web.scm 33dae72746 define procedure called wait a moment %!s(int64=3) %!d(string=hai) anos
canvas.guile-web.scm 2cd8d0af6e add guile-web client %!s(int64=3) %!d(string=hai) anos
canvas.kawa-web.scm 33dae72746 define procedure called wait a moment %!s(int64=3) %!d(string=hai) anos
canvas.sld 6b918a45fb make guile primary %!s(int64=3) %!d(string=hai) anos
physics.sld 86df361c51 move physics up %!s(int64=3) %!d(string=hai) anos
screenshot.png 8a9eb5c631 Add a screenshot %!s(int64=9) %!d(string=hai) anos
simple.sld 750793d369 fix a bug in circle hai 6 meses
syntax.sld b2a3919002 Add a max-recur syntax %!s(int64=2) %!d(string=hai) anos
turtle3.body.scm 40db935231 fix bug in face! hai 6 meses
turtle3.sld 59ebb1564d add correct implementation of face! hai 1 ano
vector.sld 4ac687fba1 add vector-angle hai 6 meses
web-client.scm c72c6972fb remove any default commands %!s(int64=3) %!d(string=hai) anos

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.