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

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.