[Edu-sig] xturtle online via processing.js !?

[Brad Miller]

Hi Everyone,

The source code for skulpt, and my implementation of xturtle is also
available on github at  http://github.com/bnmnetp/skulpt.   Skulpt is
a Javascript implementation of the Python language that runs in the
browser.  I spent a good chunk of my Sabbatical a couple years ago
implementing the turtle code in Javascript and then writing a wrapper
to fit it into the Skulpt environment.  We, at Luther College, have
used the turtle code pretty extensively in the context of our
interactive textbook (http://interactivepython.org)  for a couple of
years now.  This fall we have about 25 schools around the world using
the book, so I'm starting to think its pretty stable.  :-)

The turtle module is still missing event processing functions such as
onKey, onClick, etc.  But I think the vast majority of the
functionality is there.  If you do find something missing or have
feature requests, please let me know.


Brad


On Wed, Sep 26, 2012 at 4:32 PM, Jurgis Pralgauskis
<jurgis.pralgauskis at gmail.com> wrote:
> Let's celebrate!!
>
> not sure, how it's done under the hood, but it works
> http://interactivepython.org/courselib/static/thinkcspy/PythonTurtle/helloturtle.html#iteration-simplifies-our-turtle-program
>
> one can even code turtle online!
> http://interactivepython.org/courselib/static/thinkcspy/PythonTurtle/helloturtle.html#exercises
>
> ps.: found a link from http://pythontutor.com/ :)
> and the source of magic seems to be  https://github.com/bnmnetp/runestone
>
> On Sat, Feb 28, 2009 at 6:50 PM, Andre Roberge <andre.roberge at gmail.com> wrote:
>> On Sat, Feb 28, 2009 at 11:07 AM, Jurgis Pralgauskis
>> <jurgis.pralgauskis at gmail.com> wrote:
>>> Hey, thats cute :)
>>>
>>
>> Thanks. :-)
>>
>>> 1) I played around, and added Turtle.circle() to actions :)
>>> in code its called called circle_forward(self, radius, extent=None)
>>> and also aliased as circle
>>> you can find it http://files.akl.lt/users/jurgis/python/crunchy/
>>>
>> Looks nice.
>>
>>> 1a) seems it would be best to use canvas interface methods,
>>> which are already in graphics module (according to DRY phylosophy)
>>> or at least decine upon method naming --
>>>  which just generate code vs those that pass it to exec_js plugin
>>>
>>
>> I agree... this was (and still is) just an experiment.
>>
>>> 1b) seems, like  polygons and filling also would not be a big problem
>>> https://developer.mozilla.org/en/Canvas_tutorial/Drawing_shapes#section_9
>>> for fill you'd just jave to collect the points and then repeat them
>>> with fill() at end
>>>
>> Agreed.
>>
>>> 2) and also I'd like to make it convert all actions to javacript code at once
>>> then it would be easier to implement turtel_js and graphics in other
>>> projects --
>>> easily escaping crunchy :D
>>
>> That's a good point.  However, the idea was to be able to control a
>> turtle from an interpreter, typing one instruction at a time and
>> seeing the result.
>>
>>> As now for asinchronous update, the server and session must be up all the time
>>>
>>> 2a) then probably time.sleep would be also good to interface directly to js
>>> something like
>>> http://groups.google.co.in/group/phpguru/browse_thread/thread/8215dcdc2ac7321c
>>>
>>> 3) how is it related to server_root/reborg js experiments?
>>>
>>
>> It's not - at least not for now.  The reeborg experiment is an very
>> early prototype of an implementation of rur-ple
>> (http://rur-ple.sourceforge.net) inside Crunchy.  You can see a
>> different version live at
>> http://reeborg.world.googlepages.com/reeborg.html
>>
>> André
>>
>>> so I'll try sth more tomorrow or in a week-time
>>>
>>> On Sat, Feb 28, 2009 at 2:18 AM, Andre Roberge <andre.roberge at gmail.com> wrote:
>>>> On Fri, Feb 27, 2009 at 6:06 PM, Jurgis Pralgauskis
>>>>> but one more thing is I'd like to let access xturtle functionality online
>>>>> - one possible way could be triggering tkinter to save its canvas to ps,
>>>>> and then convert them with imagemagic and show via web (animated gif or static)
>>>>
>>>> There's probably a better way: use the html canvas.  I tried to
>>>> implement a turtle module to be embedded with Crunchy
>>>> (http://code.google.com/p/crunchy) - it is available as a demo
>>>> experimental feature.  You could use this as a starting point if you
>>>> want.
>>>
>>> --
>>> Jurgis Pralgauskis
>>> Don't worry, be happy and make things better ;)
>>> http://sagemath.visiems.lt
>>>
>
>
>
> --
> Jurgis Pralgauskis
> tel: 8-616 77613;
> Don't worry, be happy and make things better ;)
> http://galvosukykla.lt
> _______________________________________________
> Edu-sig mailing list
> Edu-sig at python.org
> http://mail.python.org/mailman/listinfo/edu-sig



-- 
Brad Miller
Associate Professor of Computer Science
Luther College
2010 - 2011 Sabbatical Contact Info
Cell:  419-2112
email:  bmiller at luther.edu