Squeak-dev September 2006

squeak-dev@lists.squeakfoundation.org

169 participants
296 discussions

[MC] reseting the cache folder
by Stéphane Ducasse 02 Sep '06

02 Sep '06

Hi for 3.9 I would like to be able to reset the cache folder of MC so that people do not get mine :). Does anybody know the magic invocation so that when the MC browser is opened or when a package is loaded the package-cache is created. Then is there a way to create another one (I did that) and to remove the current one (I could not). I did not look carefully so. Stef

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Re: Thoughts from an outsider
by Dominique Dutoit 02 Sep '06

02 Sep '06

> it would be nice to install a squeak app that generates UML > diagrams of the running system, lets you make code from there if > you want It sounds like BabySRE to me. http://heim.ifi.uio.no/~trygver/2004/babysre/BabySRE.pdf

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REMINDER: Squeak Chat Sunday September 3rd 12:00 GMT
by Ken Causey 02 Sep '06

02 Sep '06

Just a reminder that the next Squeak Chat will take place between 12:00 (Noon) and 16:00 (4 PM) GMT Sunday September 3rd, 2006. As usual we will meet in #squeak on irc.freenode.net. More information about the #squeak IRC channel can be found at http://people.squeakfoundation.org/article/7.html This is a good time to contribute to the development of Squeak by participating in the Harvesting Process. One of the main ways to contribute is by Reviewing submitted fixes and enhancements. For information about the Harvesting Process see http://minnow.cc.gatech.edu/squeak/3152 If you have the time please attend and work toward the future of Squeak. The next seven chats are scheduled for 16:00 (04:00 PM) GMT Thursday September 07, 2006 20:00 (08:00 PM) GMT Monday September 11, 2006 00:00 (12:00 AM) GMT Saturday September 16, 2006 04:00 (04:00 AM) GMT Wednesday September 20, 2006 08:00 (08:00 AM) GMT Sunday September 24, 2006 12:00 (12:00 PM) GMT Thursday September 28, 2006 16:00 (04:00 PM) GMT Monday October 02, 2006

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Fwd: [QUIZ] Happy Numbers (#93)
by Markus Gaelli 02 Sep '06

02 Sep '06

> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > =-=-=-=-=-=-= > > by Shane Emmons > > Write a program that tells whether a given integer is happy. A > happy number is > found using the following process: Take the sum of the squares of > its digits, > and continue iterating this process until it yields 1, or produces > an infinite > loop. > > For example the number 7: > > 7^2 = 49 > 4^2 + 9^2 = 97 > 9^2 + 7^2 = 130 > 1^2 + 3^2 + 0^2 = 10 > 1^2 + 0^2 = 1 > > If a number is not happy than it is obviously unhappy. Now that you > have this > program, what is the largest happy number you can find? What is the > happiest > number between 1 and 1,000,000. I define the happiest number as the > smallest > number that finds the most other happy numbers with it, i.e. 7 > found four other > numbers (49, 97, 130, and 10) making it a rank 4 in happiness. > > If you find all these examples trivial, write you program so that > it will find > happy numbers in other bases such as base 2 or 16. From there you > can extend the > program so that it finds happy bases (other than 2 and 4). A happy > bases is a > base where all numbers are happy. Good luck. > from http://www.rubyquiz.com/ Nice. Any takers for this one? I really like the idea of quizzes. I think we should have sth. similar for Squeak and Squeakland also. Or just collect our answers ... Cheers, Markus

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RomePlugin on Mac
by Dominique Dutoit 02 Sep '06

02 Sep '06

> I'll note lurking on my IDisk > via > http://www.smalltalkconsulting.com/squeak.html > follow the link to the johnmci/FileSharing.html I have installed RomePlugin.bundle in the Contents/Resources folder of Squeak 3.8.12beta5U since it seems that bundles have to be enclosed in the application package and not just located in the same folder. But when I try the Rome demo, it complains that no concrete class is available because the plugin is not loaded. Any idea? Note: I have tried a plugin of my own and it loads without problem. Maybe I am using the wrong image (Tweak3.8-6665 and Squeak3.8) or did something I shouldn't have.

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Re: TinLizzie and Sophie updates?
by Dominique Dutoit 02 Sep '06

02 Sep '06

> And, what is TinLizzie (I searched the archives, but no definitions > found just references)? It seems that TinLizzie is Squeak on OLPC. http://www.tinlizzie.org/wiki/go/Main_Page

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[ANN] Rome
by Bert Freudenberg 02 Sep '06

02 Sep '06

Rome is a 2D rendering framework made available by VPRI under MIT license: http://www.squeaksource.com/Rome.html The primary backend for Rome is a plugin using Cairo (http://cairographics.org), additionally there is a reference implementation completely in Smalltalk, and one using the Balloon2D engine. Rome is currently used in the TinLizzie and Sophie projects. - Bert -

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Re: Re: [Squeakers] [Fwd: Arcs?]
by TJ Leone 01 Sep '06

01 Sep '06

Hi, Thanks to those of you who helped me started towards building arcs, sectors, etc. I've completed some classes that are now available from my web site (http://www.leonelearningsystems.com/circular_reasoning.htm) and are up on SqueakSource under TJ Leone/Circular Reasoning. I showed a version of this at Squeakfest '06 before it was really ready, but folks were kind and I got a good list of bugs to take care of. Now the main problem is that colors of sectors and circle segments bleed at certain headings, but otherwise things work pretty well. When the CircularReasoning.st is filed in, you get a "Fractures" button in the object window that presents the Fracture, Fraction Circle and Fraction Circle Frame objects. Most of the object descriptions have been translated into Spanish. There's also a project to introduce the use of the objects for teachers. --TJ At 01:10 PM 11/3/2005, you wrote: >Hi TJ! > >When I worked on Stencili, a would-be vector graphics in Squeak, I >worked on some graphical primitives. Unfortunately, it's been a while, >and I don't have any of the code handy. To get a head start, your best >bet may be the Bezier classes that already exist in Squeak. Let me >know if you need some help getting started. (interestingly, I decided >to return to Squeak only this week). > >Also, some reading on arcs represented : >http://graphics.stanford.edu/courses/cs248-98-fall/Final/q1.html >http://www.tinaja.com/cubic01.asp >http://www.tinaja.com/glib/bezarc1.pdf > >The first link shows a specific example of a 90 degree arc represented >with Bezier segments. The last one is a more generic one. > >Bolot > > >On 11/2/05, TJ Leone <tj(a)leonelearningsystems.com> wrote: > > Hi, > > > > I used to be a programmer at Northwestern. Maybe we met when I was working > > on the ITR project? Anyway, I'm thinking about trying to port an > > application of mine from Java to Squeak and Je77 said you might be able to > > help me out. > > > > I need a class similar to the Arc2d class in Java. Have you begun or > > completed work on anything like this? > > > > The application I'm looking to port (called Circular Reasoning) is > > available for download at > > http://www.leonelearningsystems.com/circular_reasoning.htm. > > > > --TJ > > > > >Date: Tue, 1 Nov 2005 14:30:02 -0500 > > >From: "Jochen F. Rick" <nadja(a)cc.gatech.edu> > > >To: Eddie Cottongim <cottongim(a)earthlink.net> > > >Cc: tj(a)leonelearningsystems.com, squeakers(a)cc.gatech.edu > > >Subject: Re: [Squeakers] [Fwd: Arcs?] > > >User-Agent: Mutt/1.4.2.1i > > > > > >Hi TJ, > > > > > >Bolot was at one time working on something like that. I think he got > > >pretty close. You may want to contact him. I assume you met him back on > > >the ITR project. His new e-mail address is bolot(a)usa.net > > > > > >The other people to contact would be the MathMorphs people: > > >http://www.dm.uba.ar/MathMorphs/ > > > > > >Peace and Luck! > > > > > >Je77 > > > > > >On Mon, Oct 31, 2005 at 09:47:58PM -0500, Eddie Cottongim wrote: > > > > I don't think theres anything that does that off the shelf. But there's > > > > PolygonMorph, which might allow him to build things piecewise. Theres > > > > also the ST-80 Paths package, that has Arc, Circle, Line, etc, but > > > > doesn't have drawing support in Morphic. > > > > > > > > One approach to creating "SliceMorph" woud be to subclass PolygonMorph > > > > and provide some methods to control a fixed set of points from a circle > > > > point of view. The only difficulty I see here is that for a slice, you > > > > want smoothing applied to only the points on the outside of the arc. > > > > Another one would be to look at EllipseMorph and add some arbitrary > > > > circle properties and use a fancier draw method. > > > > > > > > Eddie > > > > > > > > > > > > Mark Guzdial wrote: > > > > > > > > >Can anyone give TJ a hand here? > > > > > > > > > >-------- Original Message -------- > > > > >Subject: Arcs? > > > > >Date: Wed, 26 Oct 2005 09:03:14 -0500 > > > > >From: TJ Leone <tj(a)leonelearningsystems.com> > > > > >To: guzdial(a)cc.gatech.edu > > > > > > > > > > > > > > > > > > > >Mark, > > > > > > > > > >I don't know if you remember me. We met once a few years ago on a > joint > > > > >project with Georgia Tech, U of Mich, and Northwestern. I was part of > > > the > > > > >Northwestern contingent. > > > > > > > > > >Anyhow, I was thinking about using Squeak for some work I'm doing now, > > > but > > > > >I can't find a class like the Arc2D class in Java. I want to be > able to > > > > >create arcs, circle segments and sectors of arbitrary orientation, > > > central > > > > >angle, and radius length and change them on the fly. Is there such a > > > > >Squeak class? > > > > > > > > > >If not, how would I go about creating one? I'm a total Smalltalk > > > > >newbie. I know there's a class called CurveMorph and I think I saw a > > > > >method called beSmoothCurve someplace, but I don't know anything about > > > > >drawing programmatically with Squeak. > > > > > > > > > >I tried posting this question to squeak-dev, but I haven't heard > anything. > > > > > > > > > >--TJ > > > > > > > > > > > > > > >TJ Leone > > > > >Leone Learning Systems, Inc. > > > > >237 Custer Ave > > > > >Evanston, IL 60202 > > > > > > > > > >Email: tj(a)leonelearningsystems.com > > > > >Phone: (847) 951-0127 > > > > >Fax: (847) 733-8812 > > > > >Web: http://www.leonelearningsystems.com > > > > > > > > > > > > > > > > > > > >------------------------------------------------------------------- > ----- > > > > > > > > > >_______________________________________________ > > > > >Squeakers mailing list > > > > >Squeakers(a)cc.gatech.edu > > > > >https://mailman.cc.gatech.edu/mailman/listinfo/squeakers > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > Squeakers mailing list > > > > Squeakers(a)cc.gatech.edu > > > > https://mailman.cc.gatech.edu/mailman/listinfo/squeakers > > > > > >-- > > >Jochen "Jeff" Rick, PhD Candidate, Georgia Tech College of Computing > > >jochen.rick(a)cc.gatech.edu, http://www.je77.com/, work: 404-385-1105 > > > > TJ Leone > > Leone Learning Systems, Inc. > > 237 Custer Ave > > Evanston, IL 60202 > > > > Email: tj(a)leonelearningsystems.com > > Phone: (847) 951-0127 > > Fax: (847) 733-8812 > > Web: http://www.leonelearningsystems.com > > > > > > TJ Leone Leone Learning Systems, Inc. 237 Custer Ave Evanston, IL 60202 Email: tj(a)leonelearningsystems.com Phone: (847) 951-0127 Fax: (847) 733-8812 Web: http://www.leonelearningsystems.com

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FFI Callbacks
by Ron Teitelbaum 01 Sep '06

01 Sep '06

All, I saw that there was work on a call back structure for plug-ins, by any chance has any of this work spilled over into FFI? I would like to attach to a third party callback from FFI, is that possible? Ron Teitelbaum

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TinLizzie and Sophie updates?
by Brad Fuller 01 Sep '06

01 Sep '06

> Rome is a 2D rendering framework made available by VPRI under MIT > license: > > http://www.squeaksource.com/Rome.html > > The primary backend for Rome is a plugin using Cairo > (http://cairographics.org), additionally there is a reference > implementation completely in Smalltalk, and one using the Balloon2D > engine. > > Rome is currently used in the TinLizzie and Sophie projects. Every once in a while I visit the Future of the Book site to see if there is any update on Sophie. Is there a better place to find out about progress? And, what is TinLizzie (I searched the archives, but no definitions found just references)? thanks, brad

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