Squeak-dev September 1999

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133 participants
357 discussions

Re: Problems with Win32/WinCE VMs - backing out of changes
by Bob Arning 01 Sep '99

01 Sep '99

On Wed, 1 Sep 1999 15:41:18 +0200 Marcel Weiher <marcel(a)system.de> wrote: >I guess it wouldn't be quite as bad if images were much smaller. >After all, it really is rather silly to have 5 or more copies of the >image, which are probably 99% identical. Marcel, While not wishing to argue against improvements in the current architecture, "silly" seems an inappropriate criticism. Given disk prices on the order of US$0.04 per megabyte, the cost of storing an additional image is well under a dollar. I keep lots of images around, both current and earlier releases, both pristine and modified. Often I have more than one up and running concurrently, each particularly suited to the task at hand. I don't see it as a problem, rather I leverage the capacity of my computer to provide an additional level of isolation between potentially conflicting threads of development. Duplicating that level of isolation within one image may take a non-trivial effort to get completely right. Cheers, Bob

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Re: Lampson/Thacker to do Dynabook?
by jecel＠lsi.usp.br 01 Sep '99

01 Sep '99

Tim Rowledge wrote: > Yet another project to do a Dynabook. Maybe they'll be able to get further > than the ones I've been involved with? (Annoyingly, this requires a (free) > subscription.) Yes, Marcel Weiher had mentioned this here on Monday. I think it is great. I'd like to mention that I am also working on a system of this type. I will post details at http://www.merlintec.com in the next two weeks, but while its "machine language" will be Self bytecodes, it will be reprogrammable at two different levels (the CPU is built using an FPGA and the architecture has microcode in RAM) and so it might be interesting to port Squeak to it. -- Jecel

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Re: Squeak and Java, Morphic Graphic effects
by Bob Arning 01 Sep '99

01 Sep '99

On Wed, 1 Sep 1999 15:01:36 +0200 Torsten.Bergmann(a)phaidros.com wrote: >With this tool it is easy to transform java class files back >to java source files. (the compiled java file includes all >class and method names, so this is possible). Maybe it is >usefull for some of us to reverse engineer freeware java >programs and reimplement better versions in Squeak. > >-Torsten > >* Lake - mirrors a picture in a waving lake > http://www.geocities.com/Heartland/Hills/5407/xlakecloud4.html Well, the first one had a small copyright symbol, so I'm not sure it qualifies as freeware. I wonder if similar sorts of algorithms are published in a book somewhere (I'll check through mine). Cheers, Bob

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RE: Squeak and Java, Morphic Graphic effects
by agree＠carltonfields.com 01 Sep '99

01 Sep '99

A common question I am asked by clients is, "hey, can I just go ahead and use this ----?" Unless there is a blanket license sufficient to embody the desired "use," such an answer is always expensive to find out, and rarely can the answer be stated unequivocally. There is another way. Ask permission. Most folks out there would be tickled as all get out that you would like to use their (non-commercial) stuff, and will give you consent to use. Consent is a 100% defense to infringement claims, and in my experience typically easy to come by. On the question of a copyright notice, don't let the absence of one encourage you to think the work is not protected! For modern works (post-1978), copyright vested automatically upon fixation in tangible media. For published works after 1988, the validity of a copyright was unaffected by the failure to attach a notice. Many people reasonably sophisticated in Copyright will routinely affix notice as a matter of course, and the more sophisticated an owner, the more likely they will give routine consents to non-troublesome uses. Accordingly, notice simply doesn't matter. The presence of a notice does not mean that consent won't (or hasn't already) be given. The absence of a notice doesn't mean that consent would not be necessary. > -----Original Message----- > From: MIME :arning@charm.net > Sent: Wednesday, September 01, 1999 9:19 AM > To: squeak(a)cs.uiuc.edu > Subject: Re: Squeak and Java, Morphic Graphic effects > > > On Wed, 1 Sep 1999 15:01:36 +0200 > Torsten.Bergmann(a)phaidros.com wrote: > >With this tool it is easy to transform java class files back > >to java source files. (the compiled java file includes all=20 > >class and method names, so this is possible). Maybe it is=20 > >usefull for some of us to reverse engineer freeware java=20 > >programs and reimplement better versions in Squeak. > > > >-Torsten > > > >* Lake - mirrors a picture in a waving lake=20 > > http://www.geocities.com/Heartland/Hills/5407/xlakecloud4.html > > Well, the first one had a small copyright symbol, so I'm not sure it = > qualifies as freeware. I wonder if similar sorts of algorithms are = > published in a book somewhere (I'll check through mine). > > Cheers, > Bob > > > > > -----Original Message----- > From: MIME :arning@charm.net > Sent: Wednesday, September 01, 1999 9:19 AM > To: squeak(a)cs.uiuc.edu > Subject: Re: Squeak and Java, Morphic Graphic effects > > > On Wed, 1 Sep 1999 15:01:36 +0200 > Torsten.Bergmann(a)phaidros.com wrote: > >With this tool it is easy to transform java class files back > >to java source files. (the compiled java file includes all=20 > >class and method names, so this is possible). Maybe it is=20 > >usefull for some of us to reverse engineer freeware java=20 > >programs and reimplement better versions in Squeak. > > > >-Torsten > > > >* Lake - mirrors a picture in a waving lake=20 > > http://www.geocities.com/Heartland/Hills/5407/xlakecloud4.html > > Well, the first one had a small copyright symbol, so I'm not sure it = > qualifies as freeware. I wonder if similar sorts of algorithms are = > published in a book somewhere (I'll check through mine). > > Cheers, > Bob > > > >

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RE: Problems with Win32/WinCE VMs - backing out of changes
by Steve Wart 01 Sep '99

01 Sep '99

I think this is a serious problem that deserves a higher standard of reference than the unacceptable situation imposed by Windows. Steve > -----Original Message----- > From: Peter Smet [mailto:peter.smet@flinders.edu.au] > Sent: September 1, 1999 1:01 AM > To: squeak(a)cs.uiuc.edu > Subject: Re: Problems with Win32/WinCE VMs - backing out of changes > > > > From: Dick Karpinski <dick(a)cfcl.com> > > >A second mystery to me is why Filein operations are irreversable. What's > >the problem? I know how to write the reversing instructions > when I do the > >damage in other systems. Why do people put up with being unable to > retreat? > > > Ever tried a clean uninstall of just about anything on Windows? 90% of the > time > I find the uninstallers require manual help ie: > > "some files could not be removed" > > So, you could force developers to write uninstall code, as occurs for > Windows, but > this doesn't seem to be terribly successful. > > Peter > >

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Squeak and Java, Morphic Graphic effects
by Torsten.Bergmann＠phaidros.com 01 Sep '99

01 Sep '99

Hi, A lot of java applets include nice visual effects. Would be fun to have such effects in morphic. I added a short collection of links at the end of this mail. There is also a free Java decompiler available at: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html With this tool it is easy to transform java class files back to java source files. (the compiled java file includes all class and method names, so this is possible). Maybe it is usefull for some of us to reverse engineer freeware java programs and reimplement better versions in Squeak. -Torsten * Lake - mirrors a picture in a waving lake http://www.geocities.com/Heartland/Hills/5407/xlakecloud4.html * Pool - places an image on the ground of a virtual pool, move mouse over applet http://www.spigots.com/poolmenu.htm * Panorama - takes a panoramic picture and wraps it in 3D http://www.spigots.com/panorama.htm * Flag - waves an image as a flag http://www.spigots.com/flag.htm * Plasma - throws a lots of colours at the screen very rapidly http://www.spigots.com/plasma.htm * Fire - shows a fire applet with source code http://jiri.chonbuk.ac.kr/~ycyang/Applet/Fire/ * Voxels space - fly over a mountain (long download) http://www.lilli.clara.net/applet7.htm * Sine scroller - scrolls a text on a sine http://www.anfyteam.de/anj/solidscr/solidscr.html * Snow - snow falling down in front of a picture http://www.anfyteam.de/anj/ansnow/ansnow.html * HueRotator - rotates the hue value of an image - nice effect for pictures http://www.anfyteam.de/anj/huerot/huerot.html * Wobbler - an image wobbler http://www.anfyteam.de/anj/wobbler/wobbler.html * Lens - lens effect on an image http://www.anfyteam.de/anj/lens/anlens.html * Blur Animator - motion blur effect for animations http://www.anfyteam.de/anj/blur/anblur.html * Mosaic - nice effect for changing slides http://www.anfyteam.de/anj/mosaic/mosaic.html * Bookflip - book flip effect usefull for changing slides http://www.anfyteam.de/anj/bookflip/bookflip.html * Cross Fader - Cross fading slides http://www.anfyteam.de/anj/cfade/anfade.html * Wormhole - rotating hole http://www.anfyteam.de/anj/wormhole/wormhole.html * 3D Light - rotating 3D objects with mirror effects http://www.anfyteam.de/anj/anfy3d/anfy3d.html * Firework - a firework simulation http://www.anfyteam.de/anj/firewks/firewks.html * Flozoaids - atom morph like graphics http://www.anfyteam.de/anj/flozoids/flozoids.html * Warp Effect - spriral an image http://www.anfyteam.de/anj/warp/warp.html * Tree View - tree view menue with bump effect http://www.anfyteam.de/anj/treemenu/treemenu.html * Bump Mapping - bump mapping an image with light effect like ImageMorphWithSpotlight http://www.anfyteam.de/anj/bump/anfybump.html * ....

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Re: [Win32] VM Update for 2.5
by Bruce ONeel 01 Sep '99

01 Sep '99

Hi, I've updated ftp://st.cs.uiuc.edu/pub/Smalltalk/Squeak/2.5/ with this new version, renamed to Squeak2.5-pc.zip. Cheers bruce "Raab, Andreas" <Andreas.Raab(a)disney.com> wrote: > Folks, > > I finally managed to package up and release a VM for 2.5 (sorry for the > delay). Most changes are in the networking code (PWS users will hopefully > like it) where Michael and I tracked down a couple of really ugly bugs in a > series of debugging sessions over phone - a BIG THANKS to Michael for his > patience ;-) > > Also you will find that the VM is faster than 2.4 (~10% in sends) - I > patched interp.c for inlining some byte codes (hopefully this will go as > standard into the next release) and the 3D stuff is also a bit faster (~20%) > (using VC6 SP3 fixed a couple of problems). > > Downloads: > > For those of you having the 2.5 image already you can just get the new > executables at > > http://isgwww.cs.uni-magdeburg.de/~raab/squeak/SqueakExe.zip > > The full package (including image, changes, and sources) is available at > > http://isgwww.cs.uni-magdeburg.de/~raab/squeak/Squeak.zip > > Finally, the sources (this time including projects for MSVC 5 and 6) are at > > http://isgwww.cs.uni-magdeburg.de/~raab/src/Squeak25Src.zip > > > Have fun, > Andreas > -- > +===== Andreas Raab ========= (andreasr(a)wdi.disney.com) ==+ > | Walt Disney Imagineering Phone: +1 818 544 5016 I > I Glendale, CA Fax: +1 818 544 4544 I > +======< http://isgwww.cs.uni-magdeburg.de/~raab >========+

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