May 2014 - Pharo-dev - lists.pharo.org

Serial port support on Pharo (2 or 3)
by Goubier Thierry May 14, 2014

May 14, 2014

Hi all, has anybody success using serial ports with Pharo on Mac or Linux? We're having reports of lack of success, including lack of success in recompiling a Pharo VM with a correct serial port access (a few months ago), where the same approach was sucessfull with a squeak VM. Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95

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Roassal tips about nesting and tooltip
by Alexandre Bergel May 13, 2014

May 13, 2014

Hi! We have prepared some new tips. If you have some particular tips you want to see, let us know... Roassal Tip #4: How to compose nesting in plain Roassal? https://www.facebook.com/ObjectProfile/photos/a.341189379300999.82969.34054… Roassal Tip #5: How to have tooltip popup other than a simple label? https://www.facebook.com/ObjectProfile/photos/a.341189379300999.82969.34054… Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Github & Pharo.org
by phil＠highoctane.be May 13, 2014

May 13, 2014

Am I blind or am I having a hard time spotting our stuff on GitHub from Pharo.org as well as some other properties that help us be visible? Meaning: https://github.com/orgs/pharo-project/ https://github.com/SquareBracketAssociates are very important places and aren't mentioned much. As are: https://github.com/tide-framework if someone wants to use Marina so use the Pharo power... Maybe can we add these and http://en.wikipedia.org/wiki/Pharo as well (as we bothered updating the page...) Also, in http://pharo.org/get-involved we sent people directly to the Fogbugz thing. We should mention this Penelope monkey as well: http://bugs.pharo.org/ Also, in documentation, people are doing webapps, so we need to add "Dynamic Web Development with Seaside" to http://pharo.org/documentation http://book.seaside.st/book And, we also must also add this gorgeous http://spec.st/ and Sebastian's Mapless supernice site as well. I do not have access to the CMS, so please some kind soul, do it :-) [or tell me how] Phil

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developing games in Pharo
by Ralph Boland May 13, 2014

May 13, 2014

I was recently approached to develop a children's educational computer game version of a real (wood etc.) game (looks like a pretty good game). I said I would only be interested if I could do the first implementation in Smalltalk (Squeak or Pharo). But if I develop this game in Smalltalk what am I dealing with in terms of releasing this product to a customer (over the Internet). 1) I know I have to build a suitable executable but I have never done this. I have only written Smalltalk code that I then use. So how do I build such an image and how big is it (assume code for game is small (say 3000 lines of code)). 2) How do I get the virtual image on the customer's machine. Keep in mind the customer is someone somewhere on the Internet who probably knows little about how to install Smalltalk or anything else. I am assuming here that installing the game and installing the VM are two different tasks. Is there a way to make this a single task? 3) So far I am assuming the target machine is Linux/Windows/Mac on a Desktop/Laptop. But can Smalltalk be run on any of the IPad/Notebook/etc out there? These machines represent a larger game market I believe. 4) Assuming I can arrange for my computer game (if I write it) to be installed are there memory/cpu usage issues that I need to worry about (the game itself will use a minimal of memory/cpu except for graphics which also is pretty reasonable). I am thinking here of IPads etc. For Desktops/Laptops there should be no problem. Download time and subsequent storage space is also a concern; remember the device is probably used for lots of other things so the amount of space allocated for games may be small compared to the space on the machine? 5) Sorry for the redundancy if these questions have been asked before (which I am sure they have). Thanks for any feedback; I am sure others are interested in this question too. Ralph Boland

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WTF and Programming Languages
by kilon alios May 13, 2014

May 13, 2014

I dont know if you guys are aware of this talk, very funny , quite weird , so I thought why not share it with you https://www.destroyallsoftware.com/talks/wat

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Re: [Pharo-dev] Roassal 3D empty windows
by Nicolai Hess May 12, 2014

May 12, 2014

2014-03-31 9:56 GMT+02:00 Nicolai Hess <nicolaihess(a)web.de>: > Hi Alexandre, Ronie, igor > > it isn't solved yet. It works if I make the default extent > larger: > > As I described here and on the NBOpenGL Windows thread, > on my machine(s) (both with ATI Graphics) ,the framebuffer objects > (all/one?) does not update its internal buffer sizes after they are > initilialized with the > default Morph extent 50@40. Therefore, the rendering happens > only in the upper left corner with extent 50@40. (and some rendering > artifacts > in the remaining area. not rendering artifacts actually, looks like > texture wrap clamp to edge. > Although I can not find a place where this texture wrap mode is set.) > > (on linux, phew, there are so many not working things, I don't know if it > is a driver issue: > hardcoded libpath, some distribution don't put the libGL.so under /usr/bin > missing type (something with GLXDisplay ?, I don't remember) > errors in some NB calls, > If I fix the first two issues it still does not work, because I don't know > how > to handle the NB call errors.) > > Maybe it is easier to list OS and Hardware where R3D does work, than > to list the non working one. > > What OS and graphic cards do you use and test for NBOpenGL and R3D, mac os > only? > > > > Nicolai > > > > > > > > > > 2014-03-30 22:07 GMT+02:00 Alexandre Bergel <alexandre.bergel(a)me.com>: > > Is this problem been solved already? >> >> Alexandre >> >> >> On Mar 17, 2014, at 7:35 PM, Nicolai Hess <nicolaihess(a)web.de> wrote: >> >> > As described in the "NBOpenGL on Windows" thread, I have a windows >> > machine where NBOpenGL can not create frame buffer objects (driver >> issue maybe). >> > >> > But on another windows machine, there is no error but strange rendering >> results. >> > >> > On that machine, Roassals 3D IDE, still only shows empty windows. And >> other >> > demos shows the same strange rendering (see screenshot, includes GL >> context driver info). >> > >> > >> > (BTW, there is some class name missmatch in NBGLCurveRenderer in this >> NBOpenGL version. >> > It referse to NBGLFragmentProgram although there is only a >> NBGLFragmentProgramARB class >> > in the system). >> > >> > >> > >> > >> > 2014-03-17 15:55 GMT+01:00 Ronie Salgado <roniesalg(a)gmail.com>: >> > Hi Nicolai, >> > >> > What are your system specs?, specially your graphic card. >> > Roassal3D requires a graphic card with at least OpenGL 2.0 support. Try >> updating your graphic drivers >> > >> > Greetings, >> > Ronie >> > >> > >> > 2014-03-17 11:03 GMT-03:00 Alexandre Bergel <alexandre.bergel(a)me.com>: >> > >> > Ohâ¦ Have you tried to update Athens and NBOpenGL ? Maybe you are using >> an old version of them. >> > Maybe an old version of OpenGL is installed on your Window? >> > >> > Ronie, any idea whatâs going on? >> > >> > Alexandre >> > >> > >> > On Mar 17, 2014, at 10:55 AM, Nicolai Hess <nicolaihess(a)web.de> wrote: >> > >> > > Thank you Alexandre, >> > > this was what I tried under windows, (I wasn't sure if this is still >> the right way to do it, I >> > > read it the Roassal3dTutorial.pdf). >> > > But it doesn't work. Either I am getting empty windows or (with an >> other >> > > NBOpenGL version) >> > > Frame buffer is incomplete: GL_FRAMEBUFFER_UNSUPPORTED') >> > > >> > > I tried this once with linux too, and it didn't worked. But I am not >> sure how long ago :) >> > > I'll try it again and report back. >> > > >> > > (Another note, after downloading the configuration, this: >> > > (Smalltalk at: #ConfigurationOfRoassal3d) loadDevelopment >> > > takes awfully long on windows (~ 5 min). >> > > I am sure it was much faster on linux, any idea how that can be?) >> > > >> > > >> > > >> > > >> > > >> > > >> > > 2014-03-17 14:34 GMT+01:00 Alexandre Bergel <alexandre.bergel(a)me.com >> >: >> > > Hi Nicolai, >> > > >> > > Roassal3d works well with the last Pharo 3.0. >> > > You just need to execute the following incantation: >> > > >> > > -=-=-=-=-=-=-=-=-= >> > > Gofer new smalltalkhubUser: 'ronsaldo' project: 'roassal3d'; package: >> 'ConfigurationOfRoassal3d'; load. (Smalltalk at: #ConfigurationOfRoassal3d) >> loadDevelopment >> > > -=-=-=-=-=-=-=-=-= >> > > >> > > This does not work for you? >> > > It works well on OSX and on Linux >> > > >> > > Alexandre >> > > >> > > >> > > On Mar 15, 2014, at 10:52 AM, Nicolai Hess <nicolaihess(a)web.de> >> wrote: >> > > >> > > > Hi, >> > > > >> > > > what could be the reason, that any Roassal3d example from the >> > > > Roassal3DTutorial.pdf only shows white empty windows? >> > > > >> > > > I loaded ConfigurationOfRoassal3d-RonieSalgado.10 and >> > > > (Smalltalk at: >> > > > #ConfigurationOfRoassal3d) loadDevelopment >> > > > >> > > > Any ideas? >> > > > >> > > > >> > > > regards >> > > > Nicolai >> > > > >> > > >> > > -- >> > > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> > > Alexandre Bergel http://www.bergel.eu >> > > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> > > >> > > >> > > >> > > >> > >> > -- >> > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> > Alexandre Bergel http://www.bergel.eu >> > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> > >> > >> > >> > >> > >> > <PharoScreenshot.png> >> >> -- >> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> Alexandre Bergel http://www.bergel.eu >> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> >> >> >> > So, I finally solved this issue for me. Instead of making the initial framebuffer large enough, I changed the code in NBGLFrameBuffer>>extent: to reattach all attached Renderbuffers. ( I don't know if this is a driver issue or if it is a failure in NBOpenGL) Again, someone can tell me where (OS, graphic-card) Roassal 3D runs out of the box? And even now, that I solved this issue and all(many) Roassal examples are working, The R 3D IDE still only shows a black screen. And I still don't know what this is supposed to be, any tutorial screenshot or video, showing what R3D IDE is? Nicolai

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Re: [Pharo-dev] [squeak-dev] last block arg as implicit return value?
by Eliot Miranda May 12, 2014

May 12, 2014

On Mon, May 12, 2014 at 10:05 AM, Nicolas Cellier < nicolas.cellier.aka.nice(a)gmail.com> wrote: > I think I remember it was either the first or last parameter that was > returned in old implementation > the last. ([:a :b|] value: #first value: #last) == #last > > It's a known problem: http://bugs.squeak.org/view.php?id=5793 > > but I would have thought that this was fixed with Eliot's closure... > I kept the old semantics, trying to rock the boat as little as possible. I just checked the draft standard. The end of 3.4.4 "blocks" reads "If a block has no <block body> or no <statements> in its <block body> then the value of the block is undefined." I've found the returning the last value bizarre for a while. If others feel strongly we could fix it for 4.6/5.0. But I'd want agreement with Pharo. Marcus what does Opal do with: [:a :b|] value: #first value: #last ? Squeak & VW answer #last. > > > 2014-05-12 17:58 GMT+02:00 blake <dsblakewatson(a)gmail.com>: > > >> | myBlock | >> >> myBlock := [ : arg1 : arg2 | ]. >> >> myBlock value: 'hello' value: 'there' >> >> nil >> >> Because the block isn't returning a value and the last line is calling >> the block. >> >> >> >> > > > > -- best, Eliot

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Pillar - bold quote marks versus OSX TextEdit
by Ben Coman May 12, 2014

May 12, 2014

Just a note it might be good to add to Pillar documentation [1] which says... you can make something ""bold"" like that. But I was having trouble getting this to work since the quote marks would just appear in the generated PDF. I found the answer by copy pasting the quote mark from [1] into the Mixed input field of [2] and pressing convert tells me this is UTF-16 code 22. If I type the quote mark " directly into that field, then I get the same result. However if I type the quote mark " into TextMate, then copy that character into [2], it tells me its UTF-16 201C!!! what-the! So I found out how to disable Smart Quotes at [3]. [1] github.com/pillar-markup/pillar-documentation [2] rishida.net/tools/conversion [3] devin.la/blog/disable-smart-quotes-osx-mavericks cheers -ben

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Pillar book-skeleton and more
by Yuriy Tymchuk May 12, 2014

May 12, 2014

Dear everyone, Iâm happy to announce about the Pillar book-skeleton project https://github.com/pillar-markup/book-skeleton, which is essentially a generalised starting point for writing books in Pillar. Pharo for the Enterprise and Updated Pharo by Example are using it now. If you have any suggestions, please contribute, or open issues. Together with that weâve created the GitHub organisation named Pillar-markup https://github.com/pillar-markup, which contains pillar-related projects like editor mods and documentation. If you have any Pillar related projectâs we will be happy to add you and the projects to the organisation. Have a nice week. Uko

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Changed semantics for mongo ObjectID
by Norbert Hartl May 12, 2014

May 12, 2014

I needed to change the way ObjectIds are read from and written to BSON. BSON is a format that encodes its byte contents little endian. In mongo database the format of ObjectIds is different. The way an ObjectId is encoded is big endian. You can see this if you compare the outputs for an object when read from mongo shell and from pharo. The ids wonât match. If you do ânormalâ stuff with mongo it is unlikely you have noticed the effect. An OID is read the wrong way but also written the wrong way which makes it right again from the mongo database perspective. But it wonât work if you use a mixed query setting. Meaning reading an OID and requesting the database using javascript expression. This will fail. Iâm writing this because Iâm not sure the change can break existing software. The change is not included in the stable version, yet. If you want to test then load #bleedingEdge and report any problem that might occur. I will use the new behaviour and will take the freedom to make it stable if it works for some time. FYI, Norbert

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