[etoys-dev] GSoC - Progress on the graphing tools

[Ricardo Moran]

I think the projects I submited to the showcase can now be seen at:
http://squeakland.org/showcase/project.jsp?id=9781 and
http://squeakland.org/showcase/project.jsp?id=9782


On Sat, Apr 17, 2010 at 1:08 PM, Ricardo Moran <richi.moran at gmail.com>wrote:

> Because I'm dumb :)
> No, actually, I started modifying the #drawOn: method to draw the grid, the
> axis, and all the background. It seemed to me like the right way to do it.
> Then I realized my code wasn't efficient enough so I move the drawing into a
> separate form and I redraw it only when it was necessary. This worked nice
> and I started to draw the data the same way. I didn't see the problem until
> I made the vector stuff.
> Anyway, this is fixed now. I tried uploading the project example to
> squeakland showcase but when I tried to login from etoys it throw me an
> error. I guess I'll try again later.
>
>
> On Fri, Apr 16, 2010 at 6:28 PM, karl ramberg <karlramberg at gmail.com>wrote:
>
>> On Fri, Apr 16, 2010 at 10:24 PM, Ricardo Moran <richi.moran at gmail.com>
>> wrote:
>> > Yes, they are different and also the scope of these tools is much more
>> > limited than Dr. Geo.
>> > Dr. Geo is a big project and I would like to take it's implementation as
>> an
>> > example to develop my stuff, if that's okay with you. I also like the
>> way
>> > Dr. Geo uses the WheelMorph, I may borrow it :)
>> > Richo.
>> > PD: The example you have there it's very cool! It's not easy to
>> reproduce
>> > though.
>>
>> I wonder why you don't use PolygonMorph for vectors ?
>>
>> Karl
>>
>> >
>> > On Thu, Apr 15, 2010 at 2:30 AM, Hilaire Fernandes
>> > <hilaire.fernandes at edu.ge.ch> wrote:
>> >>
>> >>
>> >> 2010/4/15 Ricardo Moran <richi.moran at gmail.com>
>> >>>
>> >>> Thanks Hilaire! It would be great if we had a teacher testing our
>> tools
>> >>> with his students. Now that they're public it is posible that some
>> teacher
>> >>> could find them interesting :)
>> >>> I must admit I'm very embarrased of not having looked at Dr. Geo until
>> >>> now (even though Markus told me to do it when we started this
>> project... I
>> >>> should have listened to him).
>> >>
>> >> Dont' worry about that, these two projects are different enought to
>> >> justify different code base. However it is true it is very possible to
>> link
>> >> plotting and interactive geometry canvas. Several interactive geometric
>> >> software out there do that. In that case, the locus object of DrGeo is
>> the
>> >> used tool.
>> >> Btw, have you looked at this example for plotting and tangente
>> >> http://blog.ofset.org/hilaire/index.php?post/script-drgeo (english
>> >> translation link in a comment at the end of the article), it use the
>> >> Smalltalk User scripting facility of DrGeo.
>> >>
>> >>
>> >>>
>> >>> Anyway, what you did is amazing! Truly amazing!
>> >>> The thing that most embarrases me is that every geometric object in
>> Dr.
>> >>> Geo is a separate morph (vectors, points, segments, and so on). This
>> is so
>> >>> obvious I feel like an idiot, but I did it the other way: I made only
>> one
>> >>> morph and I change its #drawOn: method. As a result it is somewhat
>> difficult
>> >>> to change the atributes of a specific vector without affecting others.
>> I
>> >>> will now have to fix my implementation because I didn't look at yours
>> before
>> >>> :P
>> >>
>> >> Yes, implementation was carefully thought to follow accutely the object
>> >> paradigm: having each geometric object to be a morph give an almost
>> free
>> >> bosus: Etoys scripting. This is what lead to this choice and not the
>> >> drawOn:.  In the other hand, drawnOn: should be cheaper in term of CPU
>> >> consumption. (in fact, I do have an additional level of abstraction
>> with
>> >> costume because at the time of implementation I was not sure about
>> using
>> >> Morphic or Tweak based canevas, but I will refactor that and remove
>> this
>> >> level)
>> >>
>> >> Hilaire
>> >
>> >
>> > _______________________________________________
>> > etoys-dev mailing list
>> > etoys-dev at squeakland.org
>> > http://lists.squeakland.org/mailman/listinfo/etoys-dev
>> >
>> >
>>
>
>
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