Squeak-dev January 2006

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164 participants
300 discussions

portability, java and Apple
by tim Rowledge 26 Jan '06

26 Jan '06

Spotted a note on wired.com about the powerPC-intel transition; "Java-based applications compiled for PowerPC chips are broken, such as file-sharing client LimeWire; and so are any appli..." Um, pardon me but wasn't java supposed to be portable? Yes, I understand that this is at least partly to do with the JNI nonsense but really - does no one ever learn? Rough Rules for optimisation - 1. Don't 2. for experts only - Don't Yet tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim Strange OpCodes: OKP: On your Knees and Pray!

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Pier mailing list?
by Giuliano Mega 26 Jan '06

26 Jan '06

Hello everyone, My name is Giuliano and I'm a brazilian student who's just starting to get serious (and fall in love) with Squeak. I'm currently really really interested in Pier and I have a couple of silly questions regarding it. :-) I don't think this is the proper mailing list to ask them, but I can't seem to find the actual pier mailing list. There's a link to a majordomo server in the Pier wiki, but I wasn't able to figure out how to subscribe or to which list (there are several lists and their names seem to be in german). So, without further ado, that's my first question to you guys: could someone please point me to it? :-) Thanks in advance! -- Giuliano Mega <giuliano(a)ime.usp.br>

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Croquet big project tender
by José L. Redrejo Rodríguez 26 Jan '06

26 Jan '06

Hi, all, the Technology ministry of Extremadura (my region in the southwest of Spain), has published a tender to make a "Virtual science museum" using Croquet. It is open to any european company, so maybe it is attractive for some of you or your working companies. The information can be seen at the Official Jouranl of the European Union. It is the Document 2006-11132, and you can read it at any of the official european languages (but the final documentation has to be presented in spanish). It is a good amount of money: 470,000.00 euros, so I think it is an atractive project. http://ted.publications.eu.int and search for Merida. Between the results, it is the 2006-11132 document. Regards.

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Re: Using CurveMorph for build jigsaw puzzle
by Peace Jerome 26 Jan '06

26 Jan '06

Using CurveMorph for build jigsaw puzzle Hi Edgar, Thank you for your interest. I have not been able to access the pictures in my browser. The mail archive says it cant find them. Do you have them in a public place and can you give me a url to get there? Now that you mention it I do remember coming across Rompecabezas in the past. I dont remember if I played with it. At that time I might have been stumped in loading it. I gave it another try and found I don't know how to load a .sar file into a 3.2 image. Sigh. Im glad to hear you want to introduce my new curves to your students. The thought of seeing what others might make of them was one of the motivations of doing the work. I look forward to your results. I remember running into a similar difficulty with morphs once picked up dropping to places where I couldnt reach them I made a puzzleboard, which was a pasteup morph. The pasteup morph would take the first dropped morph as the ground for the puzzle. Then anything placed on the board had to be within that ground morph and not touching any other piece. Misplaced pieces where simply rejected. I dusted off the change set and it still works in 3.9. There is currently a minor difficulty about rejected polygons getting deleted (see Mantis #2512 (http://bugs.impara.de/view.php?id=2512) for the fix.) So this might help with your puzzles, Si? Check http://209.143.91.36/super/634 (on Bobs superswiki) for the old project. Ive now put the cs up there too. My rooks nest on the swiki is at: http://209.143.91.36/super/637 Yours in service, --Jerome Peace >Lic. Edgar J. De Cleene edgardec2001 at yahoo.com.ar wrote: >Wed Jan 25 10:35:13 CET 2006 > > > >Peace Jerome puso en su mail : > >> Hi Edgar, >> >> I took some time to think about your request. I would >> not use curves or curviers to build jigsaw puzzles. >> Your best bet is segmented polygons. You just need to >> add enough vertices to make a good curve >> approximation. >> >> Then arrange them in the solved puzzle. Give them a >> bitmapfill. >> Now for each piece do two things. >> Set the form of the fill to the picture of the entire >> solved puzzle and the origin of each bit fill to the >> same point (topLeft of the entire solved puzzle). Now >> each piece shows its portion of the puzzle. You can >> now scatter the pieces. >> >> Then of course you (or someone else) has a puzzle to >> solve. >> >> ----- >> Why not curves. >> >> The way they are set up now each vertex adds something >> to determine how the curves are done. To get matching >> edges you would need something new that hasn't been >> invented yet in morphic. It's and interesting problem >> but I've relegated it to a back burner. It will >> require time and inspiration (which comes with time >> and chance). >> >> I thank you though for triggering some thought on the >> subject. >> >> Cheers and joy -- Jerome Peace > >Very kind. > >Actually, I have a Rompecabezas (puzzle) app, from my first incursions in >Squeak. > >Is more Pascal what Smalltalk / Squeak and solves the problem with a >PuzzleMorph subclass of PolygonMorph what roughly do some similar to your >suggestion. > >And was in http://minnow.cc.gatech.edu/squeak/3938 for a long time now. > >The made on it end in discovering the first bug on Squeak on 3.2 times, an >obscure case of when you do the fill some "pieces" don't could be grabbed . > >What now I wish, as part of my students doing his first steps into Squeak >world, is give this awful code to one, and say what her should convert in a >semi - decent Squeak app. > >And if is possible , use your beauty CurveMorph for doing. > >I investigate about something like >| canvas | > canvas _ FormCanvas extent: 40 at 32. > canvas fillColor: (Color transparent). > canvas drawPolygon: (Bezier3Segment example1) fillStyle: Color red >borderWidth: 2 borderColor: Color black. > canvas form asMorph openInWorld > >Or >| canvas c| > canvas _ FormCanvas extent: 40 at 32. > canvas fillColor: (Color transparent). > c _ Bezier3Segment new from: 16 at 32 via: 20 at 22 and: 22 at 22 to: 24 at 32. > c _ c asBezierShape. > canvas drawPolygon: c asPointArray fillStyle: Color red borderWidth: 1 >borderColor: Color black.! > I tried this I got two triangle looking image morphs. Is the problem you are trying to describe that you could pick them up by any transparent pixel within their bounds. I can see that would interfere with overlapping pieces. If so you are correct in using polygons. That worked for my sliding block puzzles. Blocks were easier to manage than jigsaw pieces. You could also subclass imageMorph to define containsPoint only for pixels that cast a shadow. That would prevent them from being picked up. Of course an invisible morph would be hard to catch. ;-) . > >The problem could be solved merging a PolygonMorph and a Curve Morph, as in >attached picture (made by hand and quick for you have the idea). > >I let for the wiz figure how to get a closed figure with straight and curve >segments :=) > >Very thanks !!! > >Edgar __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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RE: Mersenne Twister?
by Baveco, Hans 26 Jan '06

26 Jan '06

Hi Andreas, The attached squeak implementation of the TT800 algorithm (related to MT it seems, but with a period of 2^800 instead of 2^19937 -1) was send to the list in 1999, by (the late?) Dave N Smith. Maybe it is of use here? Hans -----Original Message----- From: Andreas Raab [mailto:andreas.raab@gmx.de] Sent: woensdag 25 januari 2006 8:00 To: The general-purpose Squeak developers list Subject: Mersenne Twister? Hi Folks - Does anyone know a good (Squeak/Smalltalk) implementation of the Mersenne Twister? I have a task for which I don't really trust good ol' Random and would like to use an alternative PRNG instead. Thanks, - Andreas

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Re: Squeak at the NASA :)
by Todd Blanchard 26 Jan '06

26 Jan '06

Yeah - NASA knows software. I have a package for using their CLIPS system on the Mac. It works great. http://homepage.mac.com/tblanchard/ObjectiveCLIPS On Tuesday, January 24, 2006, at 11:00PM, Andreas Raab <andreas.raab(a)gmx.de> wrote: >FWIW, this project uses Croquet and Tweak. If you ever wanted to work >with a bunch of really sharp guys this is definitely a place to consider. > >Cheers, > - Andreas > >stéphane ducasse wrote: >> Read read the nasa is using Squeak for.... >> >> Begin forwarded message: >> >>> From: Ted Shab <tshab(a)email.arc.nasa.gov> >>> Date: 23 janvier 2006 18:30:44 HNEC >>> To: ecoop-info(a)ecoop.org >>> Subject: [ecoop-info] MCT Architect at NASA/Ames in Mountain View, CA >>> >>> A team at NASA Ames Research Center is looking for a system architect >>> to help us design, develop, and deploy a component-based framework >>> for building NASA mission control systems. This project is at a point >>> where they need someone with serious chops to help translate the >>> preliminary design and prototypes into a state-of-the- art yet >>> practical and deployable system. The architect would be joining an >>> up-and-running, 10+person team of engineers and designers. The design >>> includes elements of user-level composition, model-driven user >>> interfaces, dynamic assembly of components according to >>> ontology-specified roles, distributed components, etc. etc. We are >>> currently building a pilot in Java / Eclipse RCP, and a parallel >>> testbed for user-experience exploration in Squeak (Smalltalk) >>> (really). The resulting framework will be used by the various NASA >>> centers (e.g. Ames, JPL, Johnson Space Center, Kennedy Space Center, >>> etc) to build distributed, multi-mission systems for planning and >>> executing a variety of NASA missions, including robotic (e.g. Mars >>> rovers & deep-space probes) and manned (e.g. the new Moon/Mars >>> exploration effort, including the Crew Exploration Vehicle currently >>> being designed). >>> >>> Position is located in Mountain View, California, at NASA/Ames, a >>> NASA research center. We can work with individuals on residency issues. >>> >>> Interested parties should send a resume to tshab(a)mail.arc.nasa.gov >>> >>> Thanks! >>> >>> --Ted >>> _______________________________________________ >>> ecoop-info mailing list >>> ecoop-info(a)ecoop.org >>> http://www.aito.org/mailman/listinfo/ecoop-info >> >> >> >> > > > >

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Croquet update
by Bob Courchaine 25 Jan '06

25 Jan '06

Several folks on the list asked recently about the state of Croquet. Julian Lombardi talks about the upcoming release of "Hedgehog", Croquet v1.0 on his blog today: http://jlombardi.blogspot.com/2006/01/working-hedgehog.html

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Squeak Chat Sunday January 29th 20:00 GMT
by Ken Causey 25 Jan '06

25 Jan '06

Just a reminder that the next Squeak Chat will take place between 20:00 (8 PM) GMT Sunday January 29th and 00:00 (Midnight) GMT Monday January 30th, 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 00:00 (12:00 AM) GMT Friday February 03, 2006 04:00 (04:00 AM) GMT Tuesday February 07, 2006 08:00 (08:00 AM) GMT Saturday February 11, 2006 12:00 (12:00 PM) GMT Wednesday February 15, 2006 16:00 (04:00 PM) GMT Sunday February 19, 2006 20:00 (08:00 PM) GMT Thursday February 23, 2006 00:00 (12:00 AM) GMT Tuesday February 28, 2006

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SqueakMap 2.1 and Croquet Jasmine problem
by David Faught 25 Jan '06

25 Jan '06

The required client upgrade to use the new SqueakMap version 2.1 fails in Croquet Jasmine with the error message "Error occurred when updating map: UndefinedObject>>isDigit". This is also noted in Mantis problem #2592.

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RE: C# features
by Ramon Leon 25 Jan '06

25 Jan '06

> Hi, > > I suppose you're talking about C# 3.0 ? > > because it also will allow XML and SQL expressions directly > in code, it seems that C# 3.0 will be a mixture of many > paradigms, future showst if this will be a good mixture or > not. Also, we have to wait what Microsoft will understand by > lamba expressions, because they always want to present a > so-called productive-simple-to-use environment ;-) Anyway I > would be pessimistic ..... > 2.0 already supports lambda expressions, just not with the shortened syntax that 3.0 will offer.

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