Squeak-dev July 2002

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205 participants
393 discussions

Changes acceptance procedures
by Peter Schuller 04 Jul '02

04 Jul '02

Hello, what's the current procedures/policies for accepting changes into Squeak? Back in January of 2001 I submitted an enhancement of the ConnectionQueue class (http://swiki.gsug.org:8080/sqfixes/1285.html). I never received any response. I'm bringing this up because looking at the list of fixes at: http://www.mindspring.com/~dway/smalltalk/sqfixes/old/23Aug01/sqfixes4.html I get the impression that most fixes go unnoticed/uncommented and presumably uncommitted to the official Squeak. I suppose my enhancement may have contained a bug / been considered badly written; but I would at least have expected to receive some sort of response. Especially since the enhancement addressed the need for blocking accepts - a very basic feature in most development environments. Yet the Squeak Socket/ConnectionQueue stuff only supports a polling approach. In other words, I would have expected the functionality to be desired. My question is - did my enhancement slip through the cracks, or are the maintainers simply too busy to handle all the changes that come in? Is this a general problem? If the latter - perhaps a reorganization is needed. There is much talk about Squeak being Open Source and how easy it is to contribute to the project; but if changes go ignored, the submitter is less likely to continue submitting enhancements. I get the distinct impression that this is a general problem. Surfing the Wiki one can find various nice things (such as better-looking themes, a new and improved system browser, etc) - but they are not in the official Squeak release even though they are seemingly things many people would want - and particularly things that would help Squeak achieve success among newcomers. Comments? Flames? :) -- / Peter Schuller, InfiDyne Technologies HB PGP userID: 0xE9758B7D or 'Peter Schuller <peter.schuller(a)infidyne.com>' Key retrival: Send an E-Mail to getpgpkey(a)scode.org E-Mail: peter.schuller(a)infidyne.com Web: http://www.scode.org

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Re: Do some good for the world; make M$ irrelevant
by Bruce ONeel 04 Jul '02

04 Jul '02

Jecel Assumpcao Jr <jecel(a)merlintec.com> wrote: > Let's not kid ourselves - consumers won't even notice Palladium and > won't make much of a fuss when they do. Nobody I know, except for me, > is bothered by those nasty DVD region codes, for example. Well, at least a few others do. I was recently in the market for a DVD player, lightning had taken out our VCR, and a lot of the players were marked "NO CODES". cheers bruce

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Flash3 demo?
by Ted Kaehler 04 Jul '02

04 Jul '02

Folks, We used to have a very nice Flash-in-Squeak demo. It was a Flash3 file on the AUDI web site. That file has gone away (anyone have a copy?). Now we need a replacement demo file. Do you know of a "flashy" Flash3 file somewhere on the web that we can point at? Most good stuff is in Flash 4 or 5. The file should show action, with solid objects that are not too cartoon-like. The main criteria is that you like the work, and would be happy to show it as a demo of our Flash renderer. --Ted.

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Microsoft license agreement
by Jarvis, Robert P. (Contingent) 04 Jul '02

04 Jul '02

When installing YAMSP (Yet Another Microsoft Security Patch) today I noted the following in the End-User License Agreement: * You may not disclose the results of any benchmark test of the .NET Framework component of the OS Components to any third party without Microsoft's prior written approval. Golly, I *knew* I'd find a reason to load .NET... :-) Bob Jarvis Compuware @ Timken ********************************************************************** This message and any attachments are intended for the individual or entity named above. If you are not the intended recipient, please do not forward, copy, print, use or disclose this communication to others; also please notify the sender by replying to this message, and then delete it from your system. The Timken Company **********************************************************************

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Re: [newbie][q] authoringPrototype X newStandAlone
by Leo Burd 04 Jul '02

04 Jul '02

- Hi Ned, Once again, thank you very much!! Now my Morph seems to be working fine. The only thing is that, for some reason, its being displayed as a blue rectangle in the ObjectsTool. What shall I do for it to be presented with a little icon of its picture? Best, Leo ------------------ From: Ned Konz <ned(a)bike-nomad.com> To: squeak-dev(a)lists.squeakfoundation.org Subject: Re: [newbie][q] authoringPrototype X newStandAlone Date: Mon, 1 Jul 2002 13:18:16 -0700 Reply-To: squeak-dev(a)lists.squeakfoundation.org On Monday 01 July 2002 12:02 pm, Leo Burd wrote: > I'm having a hard time trying to understand the difference between > authoringPrototype and newStandAlone. Do I need both of them in my > code? Would anybody help me out? If you want to work with the Objects tool, you need=20 descriptionForPartsBin and newStandAlone, and/or=20 supplementaryPartsDescriptions. See the class comment on ObjectsTool.=20 initializeForStandAlone is also used for the "sample instance" menu=20 choice from browsers if you have a descriptionForPartsBin. I think you can skip authoringPrototype; it appears to just be used=20 for building some of the standard flaps. The default implementation=20 in Morph is to do a "new", but I don't think you'll find it called on=20 your own code. --=20 Ned Konz http://bike-nomad.com GPG key ID: BEEA7EFE

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Re: 3.2 gamma handoff
by Blaine Buxton 04 Jul '02

04 Jul '02

Hey, Not to beat any dead horses, but is there any chance to include Ned Konz's Ctrl/Alt switch preference code into 3.2 final? I know the whole modifier key debate is pretty hot, but I think it's a wonderful compromise and it will probably be the first fileIn into every image that I have from now on...=) Whisker would be nice too, but I digress..=) I've been using 3.2gamma quite a bit and I have no other complaints...=) Love and Squeaking, Blaine >From: Scott Wallace <scott.wallace(a)squeakland.org> >Reply-To: squeak-dev(a)lists.squeakfoundation.org >To: squeak-dev(a)lists.squeakfoundation.org >CC: Dan(a)Squeakland.org >Subject: Re: 3.2 gamma handoff >Date: Wed, 03 Jul 2002 13:55:56 -0700 > >So 3.2 "final" is very close now, and this is a final call for complaints, >suggestions, and problem reports. > >Andrew kindly sent wording for the rights/openness paragraph. > >I have been fleshing out and proofreading the contents of the ReadMe and >Welcome windows. > >Nobody has mentioned any issues regarding the 3.2gamma4 image recently >posted, so at this point that 3.2gamma4 represents *precisely* the code >base of the putative 3.2-final release, and 3.2-final will primarily differ >from 3.2gamma4 only in the contents of the first-screen windows, plus >having had a few standard last-minute-cleanup expressions evaluated. > >Indeed, there has been no feedback whatsoever regarding 3.2gamma4, leaving >me uncertain whether this represents "gamma burnout" -- i.e., nobody is >using it -- or whether this bespeaks a satisfied community of gamma4 users >who can attest to the absence of gotchas. > >If *anybody* out there has used 3.2gamma4 and has any experiences to >report, positive or negative or neutral, I would really appreciate hearing >from you -- off-list is fine, unless there are issues worth bringing to the >attention of the mailing list. > >Thanks, > > -- Scott > > >At 12:03 AM -0700 6/29/02, Dan Ingalls wrote: >>Folks - >> >>[I'm about to leave town] >> >>I have incorporated the last updates I knew of (incl a couple JMM >>suggested that were required to compile a new VM on some platforms), have >>brought in an old copy of readme.txt, and have written a short word of >>caution to folks who should be at SqueakAlpha, not in Squeak. >> >>I consider this final in code but not in appearance (please don't be >>shocked by the mess on screen). It needs... >> >>1. The readme to be updated (flaps and UI prefs at least) and combined >>with the Getting Started text >> >>2. A proper statement about rights and openness from Andrew, to go in the >>welcome window (probably at the end) >> >>3. Ted to fix the SqC image whose URL appears in the welcome window, and >>it needs a good URL for Flash demo (suggestions??). >> >>I have placed the latest image on UIUC as Squeak3.2gamma3.zip (I used >>Squeak to zip it, thanks for the encouragement). >> >>I have spoken with Scott Wallace who says he is willing to do the final >>laying on of hands to finish this up. >> >>If you have easily-implemented suggestions about the appearance of, or >>text to go in, the first-screen windows, please relay them promptly to >>Scott. >> >>I will continue to be in touch be e-mail, though unable to do much of >>substance from here on. Scott knows this stuff well, and will probably do >>a better job that I at putting this baby in truly final form. >> >>Good luck, y'all... >> >> - Dan ------------------------------------------------ Blaine Buxton http://www.mp3.com/blainebuxton http://home.kc.rr.com/bbuxton "Think right and you can fly, The kingdom of heaven is within"-George Clinton _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

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A new user question
by salemi 04 Jul '02

04 Jul '02

Hello, I just downloaded the Squeak software. My goal is to learn to create projects similar to driving the racing car example in the scripts section of Squeak and then teach high school students to create their own projects. I would appreciate if you let me know where to start. Do you think the required skills for writing scripts are beyond the high school students abilities. Thanks, Behnam.

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opening squeak in the web browser problem
by salemi 03 Jul '02

03 Jul '02

Hi, I am having problem regarding opening the squeak tutorials on the squeakland.org web site. I was wondering if anybody might help me. I suppose there should be a plugin that I may download and install. Thanks in advance, Behnam. PS. Sorry if you received duplicated messages

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Re: Balloon3D problem
by Bob Arning 03 Jul '02

03 Jul '02

On Wed, 03 Jul 2002 16:49:24 +0100 David Duke <D.Duke(a)bath.ac.uk> wrote: >However, this doesn't address the real question: why does running >B3DSampleMorph with my B3DCone as geometry work only after running >B3DBox as geometry? This doesn't seem to be a problem on the Mac. I made the change and the cone ran as the first 3D object. >Could anyone expand on how/where glInitialize is >being invoked, and why stDisplay might be ? glInitialize is called (by another name) from B3DAcceleratorPlugin>>initialiseModule (which, of course has been converted to C and compiled as part of the VM/plugin). > >> I have tested Squeak without the 3D plugin and Squeak will >> then fall back on the smalltalk version of the plugin and that >> is not very snappy. > > >As a result of the above, I'm assuming that I'm running the actual plug-in. Don't. Open the preferences, go to the performance section and turn on "higher performance". See if that helps. Cheers, Bob

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Balloon3D problem
by David Duke 03 Jul '02

03 Jul '02

Hello, I'm having a problem involving Balloon3D; I'm a relative newcomer to using squeak, and I'm not sure if its the system, or my assumptions! Background: I want to do some experiments with 3D interactions, and so I started exploring the Balloon3D and Wonderland implementations to try and understand the protocol needed to build and render 3D objects. I set up what seemed like a simple test to render a cone, using the classes B3DSceneMorph and B3DBox as models. The result was that squeak crashed with a segmentation fault! Using the debugger, I narrowed the problem down to the message primAddObject invoked on self in B3DPrimitiveRasterizer>>addPrimitiveObject:ofSize: I wanted to understand what the parameters to this method _should_ look like (so I could compare with what was being passed through from my code). B3DSceneMorph seems to work okay, so I edited addPrimitiveObject:ofSize: and added `self halt' at the start of the method, after the temporary variables are defined. I then ran `B3DSceneMorph new openInWorld' from the transcript, with the hope of getting a debugger that would let me explore the objects were being used in rendering the B3DBox used in the demo. Now the problem: I get not one, but two debugger windows opening, neither of which will respond to user input. In fact, the entire squeak application seems to lock up. Any comments on the problem invoking the debugger would be appreciated. I've been using the 3.2gamma image, change set 4881. I've had the same problem with 3.1beta and 3.2gamma4 images, all running under linux. Also, if someone who is familiar with Balloon3D has a moment to look at the two attached classes, I would appreciate any comments on what I'm doing (or rather failing to do) in these. Any pointers to other examples and/or documentation on Balloon3D would be helpful. thanks, David -- Dr. David Duke Email: D.Duke(a)bath.ac.uk Department of Computer Science Web: www.bath.ac.uk/~masdad/ University of Bath Tel: +44 1225 323 407 Bath, BA2 7AY U.K. Fax: +44 1225 323 493 'From Squeak3.2gamma of 15 January 2002 [latest update: #4881] on 2 July 2002 at 2:47:34 pm'! B3DGeometry subclass: #B3DCone instanceVariableNames: 'vertices normals bbox ' classVariableNames: 'Colors Faces ' poolDictionaries: '' category: 'DJD - Balloon3D'! !B3DCone commentStamp: 'DJD 7/2/2002 14:47' prior: 0! Build a cone, approximated by a 6-sided pyramid, i.e. 6 triangular faces and a hexagonal base. Allow the cone to be rendered via Balloon3D. Instance variables: vertices Array of B3DVector3 -- 7 vertices of the cone, 1-6 around the base, 7 is the apex. normals Array of B3DVector3 -- 7 normal vectors, one per face. bbox Rectangle -- bounding box for the cone. Class variables: Faces Array of Array of Number -- per-face indexes into vertex array Colors Array of Color -- per-face color. Construction: B3DCone radius: R height: H builds cone with base inscribed in a circle of radius R, and with height H. Note: Class variables (Faces and Colors) need to be initialized. This is done in the class method "initialize". Q: who invokes this? ! !B3DCone methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 13:01'! boundingBox ^ bbox! ! !B3DCone methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 14:32'! buildWithRadius: r height: h "Make a 6-sided cone with base radius r and height h. The base is in the x-y plane, the apex is along the positive z-axis." vertices _ Array new: 7. "Define the vertices for the base - vertex numbers 1-6" 1 to: 6 do: [:i | vertices at: i put: B3DVector3 new. (vertices at: i) x: (r * ((i * Float pi / 3.0) cos)) y: (r * ((i * Float pi / 3.0) sin)) z: 0.0. ]. "Cone apex is vertex 7." vertices at: 7 put: B3DVector3 new. (vertices at: 7) x: 0.0 y: 0.0 z: h. "Calculate normals for the triangular sides." normals _ Array new: 7. 1 to: 6 do: [:i | | vecA vecB | vecA _ (vertices at: ((Faces at: i) at: 1)) - (vertices at: ((Faces at: i) at: 2)). vecB _ (vertices at: ((Faces at: i) at: 1)) - (vertices at: ((Faces at: i) at: 3)). normals at: i put: (vecA cross: vecB) normalized. ]. "Base normal is unit vector along negative z axis." normals at: 7 put: B3DVector3 new. (normals at: 7) x: 0.0 y: 0.0 z: (1.0 negated). "Calculate bounding box for the cone. In fact, the box returned is slightly larger than required." bbox _ Rectangle origin: (r @ r @ 0) corner: ((r negated) @ (r negated) @ h). ! ! !B3DCone methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 14:35'! renderOn: aRenderer "Render the cone using aRenderer; code based on B3DBox>>renderOn." "Render the triangular sides." 1 to: 6 do: [:i | aRenderer trackEmissionColor: true; normal: (normals at: i); color: (Colors at: i); drawPolygonAfter: [ 1 to: 3 do: [:v | aRenderer vertex: (vertices at: ((Faces at: i) at: v)). ] ] ]. "Render the base." aRenderer trackEmissionColor: true; color: (Colors at: 7); drawPolygonAfter: [ 1 to: 6 do: [:v | aRenderer vertex: (vertices at: ((Faces at: 7) at: v)) ] ]. ! ! "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "! B3DCone class instanceVariableNames: ''! !B3DCone class methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 10:58'! initialize "B3DCone initialize" Faces _ #((1 2 3) (1 3 4) (1 4 5) (1 5 6) (1 6 7) (1 7 2) (2 3 4 5 6 7)). Colors _ #(red green blue yellow gray cyan white) collect: [:s | (Color perform: s) alpha: 0.5].! ! !B3DCone class methodsFor: 'as yet unclassified' stamp: 'DJD 7/1/2002 17:03'! radius: rad height: ht "Create a cone with the given height and radius." ^self new buildWithRadius: rad height: ht. ! ! B3DCone initialize! 'From Squeak3.2gamma of 15 January 2002 [latest update: #4881] on 2 July 2002 at 2:47:42 pm'! Morph subclass: #SimpleTest instanceVariableNames: 'scene renderer camera ' classVariableNames: '' poolDictionaries: '' category: 'DJD - Balloon3D'! !SimpleTest commentStamp: 'DJD 7/2/2002 14:44' prior: 0! Simple morph subclass to hold the image of a scene rendered via Balloon3D. Based on B3DSceneMorph. Instance variables: scene B3DScene -- scene to be rendered, here consisting of a single cone. renderer B3DEnginePart? camera B3DCamera ! !SimpleTest methodsFor: 'as yet unclassified' stamp: 'DJD 7/1/2002 16:56'! createScene | coneObj | scene _ B3DScene new. camera _ B3DCamera new. camera position: 0 @ 0 @ -10. self extent: 100 @ 100. coneObj _ B3DSceneObject named: 'cone'. coneObj geometry: (B3DCone radius: 1.0 height: 2.0). scene defaultCamera: camera. scene objects add: coneObj.! ! !SimpleTest methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 14:37'! drawOn: aCanvas "Draw the scene on aCanvas, using whatever renderer is available." | myRect | myRect _ (self bounds: bounds in: nil) intersect: (0 @ 0 extent: DisplayScreen actualScreenSize). (renderer notNil and: [renderer isAccelerated]) ifFalse: [ renderer ifNotNil: [renderer destroy]. renderer _ nil ]. renderer ifNotNil: [renderer _ renderer bufferRect: myRect]. renderer ifNil: [ renderer _ B3DHardwareEngine newIn: myRect. renderer ifNil: [^ self drawSimulatedOn: aCanvas] ] ifNotNil: [ renderer reset ]. renderer viewportOffset: aCanvas origin. renderer clipRect: aCanvas clipRect. self renderOn: renderer. Display addExtraRegion: myRect for: self ! ! !SimpleTest methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 10:26'! drawSimulatedOn: aCanvas "Draw the receiver using the builtin software renderer" (renderer notNil and: [renderer isOverlayRenderer]) ifTrue: [ "Dump it. We may just being dragged around by the hand." renderer destroy. renderer _ nil ]. aCanvas asBalloonCanvas render: self! ! !SimpleTest methodsFor: 'as yet unclassified' stamp: 'DJD 7/1/2002 15:50'! initialize super initialize. self createScene.! ! !SimpleTest methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 11:05'! renderOn: aRenderer (color isTransparent or: [color isTranslucent]) ifTrue: [aRenderer restoreMorphicBackground: self bounds under: self]. aRenderer viewport: self bounds. aRenderer clearDepthBuffer. color isTransparent ifFalse: [aRenderer clearViewport: color]. aRenderer loadIdentity. scene renderOn: aRenderer. aRenderer restoreMorphicForeground: self bounds above: self! ! !SimpleTest methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 10:19'! scene ^ scene. ! ! !SimpleTest methodsFor: 'as yet unclassified' stamp: 'DJD 7/2/2002 10:19'! scene: aScene ^ scene _ aScene. ! !

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