Squeak-dev September 2003

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163 participants
651 discussions

Your Input Is Needed
by Laurence.Rozier＠knowledgearchitects.net 02 Sep '03

02 Sep '03

Hi, In the interest of broadening the Squeak community, I've set up some polls to see how folks are using Squeak. You can find the polls at: http://www.knowledgearchitects.net/Worlds/KnowledgeArchitects/TechnologyCen… as well as in the sidebars in various places if you prefer to take them one at a time. Cheers, Laurence

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squeak.org site not accessible
by Raimundas Vaitkevitcius 02 Sep '03

02 Sep '03

Hi, the webmaster of the squek.org site, sorry for trouble, but what happened to the site? When going in there, I receive message "This site has expired. If you are the webmaster of this site, click here to renew your account." Raimundas Vaitkevicius

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MessageNotUnderstood: MtTrait>>mouseDown:
by Martin Drautzburg 02 Sep '03

02 Sep '03

This happens in mouseDown: evt evt shiftPressed not & evt yellowButtonPressed ifTrue: [^ self invokeMenu: evt]. (super respondsTo: #mouseDown:) ifTrue: [super mouseDown: evt] the #mouseDown: methon in inherited from a Trait. The class in question is a subclass of SystemWindow which *does* respond to #mouseDown. What is happening here ?

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[Q] VM Command Line Options
by Webb McDonald 02 Sep '03

02 Sep '03

hello- I have a question about sending command line options to the image, via the VM invocation. I need to send command line options but I cannot depend on the existence of a .st "startup script" file. what I want: >squeak.exe bot.image arg1 arg2 what seems to be required: >squeak.exe bot.image startup.st arg1 arg2 Is there any simple way to get around this weird requirement? I do not have any such .st I want to read, and really cannot depend on one existing in the directory. Thanks- _____________ Webb McDonald vanjulio(a)cc.gatech.edu "He who fights monsters should look to it that he himself does not become a monster." -Nietzsche

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Font editing
by Markus Fritsche 02 Sep '03

02 Sep '03

Hi! I'd like to know if there is something like a FontEditor- or CharacterEditorMorph? I think I've used something like that before, but can't remember where it was. TIA, Markus -- http://reauktion.de/archer/

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Math in Squeak
by Johannes Jansson 02 Sep '03

02 Sep '03

Hello! I'm looking for some good math functionalities in Squeak for educational purposes (University). I searched Squeakmap, but found only the PlotMorph which can plot functions. On a search on the homepage I found two more interesting pages, 'Math Pack1' which was very good, and the 'MathMorphs', which seemed to be a bit out of date. What's up with these packages? And is there anything more available for Squeak? Thanks! Johannes.

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Problems with plugin and 3D graphics
by Davide Varvello 02 Sep '03

02 Sep '03

Hi All, These days I'm playing with Alice (it's very, very nice) and I want to publish my project on a web server, so I started installing the plugin and follow the suggestions you can find here: http://minnow.cc.gatech.edu/squeak/1865 and I succesfully tested it following the link at the end of the page. Than I published my 3D project and noticed some issues, I can't see it. If the project does not contain 3D stuff, I've no problems otherwise the application stops. I verify this behavior is not related only to my project but you can reproduce it if you go to the super swiki and try to lauch the "Squeak in 3D" project (http://www.squeakland.org/project.jsp?http://www.squeakland.org/uploads/Squ…). To be clearer, I also attached 2 gifs with the messages of error. Any suggestions? Thanks Davide -- Davide Varvello Tel: 02/30901535 Mail: d.varvello(a)quinary.com Home: http://www.quinary.com XP: http://www.quinary.com/pagine/about/extreme_frame.htm --

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Re: [OT] substring indexing
by Richard A. O'Keefe 02 Sep '03

02 Sep '03

Martin Drautzburg <martin.drautzburg(a)web.de> asked: Does anybody know a good way to index a large set of strings (so) searching for strings that contain a given substring can be done fast? Is there a way to map strings to integers (i.e. indexing without a tree) so that the substring search can be mapped to examining a range of these integers and their associated strings . Or is this theoretically impossible ? If anyone answered this question, they did so privately. My understanding of the question is this: Given a fixed or slowly changing set S of strings is there a data structure that can be used so that q(x) = { s in S | exist a,z such that s = a++x++z } can be computed cheaply? There are several such data structures. Look for "suffix tree", "suffix array", and "directed acyclic word graph". For example, the Compact DAWG of a text with n characters can be stored in 6n integers (even, if I've understood the relevant articles correctly, for wide (Unicode) characters). Not only is the space cost linear in the amount of text to be stored, the time to construct the index is too. http://www.nist.gov/dads/HTML/directedAcyclicWordGraph.html is one place to start. There are several books that discuss these matters as well. By the way, this is not necessarily a good way to do Information Retrieval: these methods consider _all_ characters on an equal basis and have no interest in or awareness of words.

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How to bind a listening socket to an address?
by Markus Fritsche 02 Sep '03

02 Sep '03

Hi! As the subject says, I'd like to know how I could cause a socket to listen only on a specific adress, say 127.0.0.1? Regards, Markus -- http://reauktion.de/archer/

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Re: RE: Wrong color format in B3DPrimitiveVertex?
by Bob Arning 02 Sep '03

02 Sep '03

Andreas, It may be related to the odd coloring of the cube in the B3DSceneExplorerMorph. When I get one out and turn on acceleration (3.5 image, 3.4 Mac VM), the colors change. Here are the expected (and correctly drawn with acceleration off) colors and what they look like with acceleration on: (TranslucentColor r: 1.0 g: 0.0 b: 0.0 alpha: 0.498) should be red, but looks like (Color r: 0.498 g: 1.0 b: 0) when accelerated (TranslucentColor r: 0.0 g: 1.0 b: 0.0 alpha: 0.498) should be green, but looks like (Color r: 0.498 g: 0.0 b: 1.0) when accelerated (TranslucentColor r: 0.0 g: 0.0 b: 1.0 alpha: 0.498) should be blue, but looks like (Color r: 0.498 g: 0.0 b: 0) when accelerated (TranslucentColor r: 1.0 g: 1.0 b: 0.0 alpha: 0.498) should be yellow, but looks like (Color r: 0.498 g: 1.0 b: 1.0) when accelerated (TranslucentColor r: 0.5 g: 0.5 b: 0.5 alpha: 0.498) should be gray AND IS! (TranslucentColor r: 0.0 g: 1.0 b: 1.0 alpha: 0.498)) should be cyan, but looks like (Color r: 0.498 g: 0.0 b: 1.0) when accelerated Looks very much like some mismatch between ARGB and RGBA. Cheers, Bob On Sun, 31 Aug 2003 19:15:31 +0200 "Andreas Raab" <andreas.raab(a)gmx.de> wrote: >Do you have an example for testing this? > >Cheers, > - Andreas > >> -----Original Message----- >> From: squeak-dev-bounces(a)lists.squeakfoundation.org >> [mailto:squeak-dev-bounces@lists.squeakfoundation.org] On >> Behalf Of Martin Kuball >> Sent: Saturday, August 30, 2003 7:47 PM >> To: squeak-dev(a)lists.squeakfoundation.org >> Subject: Wrong color format in B3DPrimitiveVertex? >> >> >> Hi! >> >> The B3DPrimitiveVertex stores a Color value as a word in the >> format ARGB, >> where A is the most significant byte. On my Linux system >> using an nvidia >> driver this does not seem to be what OpenGL expects. It >> should rather be ABGR.

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