April 2014 - Pharo-users - lists.pharo.org

Re: [Pharo-users] [ANN] WIP iStoa

by Hilaire Fernandes

Thanks Bernat. I will use your VM for next release. With advices from my son, I am working now to make iStoa more graphically fancy. Hilaire Le 22/04/2014 09:31, Bernat Romagosa a Ã©crit : > There you go! > > Bernat. > -- Dr. Geo http://drgeo.eu

April 22, 2014

Re: [Pharo-users] Curl markup with Pillar

by Norbert Hartl

Am 22.04.2014 um 15:12 schrieb Damien Cassou <damien.cassou(a)gmail.com>: > this should get you started: > https://github.com/DamienCassou/pillar-documentation > The links in there do not seem to work. When linking to smalltalkhub the ~is exchanged by %7E Norbert > Please tell me if you still have problems. > > Best > > On Tue, Apr 22, 2014 at 2:46 PM, Robert Shiplett <grshiplett(a)gmail.com> wrote: >> Google on Pillar "Pharo" hits some old links. >> >> But when I got to http://www.smalltalkhub.com/#!/~Pier/Pillar >> >> this worked fine in the RC inage: >> >> Gofer new smalltalkhubUser: 'Pier' project: 'Pillar'; configuration; load. >> (Smalltalk globals at: #ConfigurationOfPillar) load >> >> >> On 22 April 2014 09:38, Robert Shiplett <grshiplett(a)gmail.com> wrote: >>> >>> re: Curl markup, as in web markup using declarative style in Curl PL from >>> MIT, not cURL ( see www.curlap.com) >>> >>> My Japanese web pages are now generated using nunjucks + node.js but in >>> the hope of using pharo 3 + Seaside on small virtual server, I thought I >>> would see what it takes to add Curl markup to the Pilar repertoire. >>> >>> But the Pharo 3 RC image is giving a walkback over the configuration for >>> Pillar, so I may not get to this this morning. >>> >>> mrkup, mrkdwn >>> >>> PS >>> did any one see the role of an MIT OCaml / emacs guy in the Android visual >>> app gen project from MIT ? >>> >>> PPS >>> Curl Android/iOS app gen project is called "caede" as in "maple" (KAEDE) >> >> > > > > -- > Damien Cassou > http://damiencassou.seasidehosting.st > > "Success is the ability to go from one failure to another without > losing enthusiasm." > Winston Churchill >

April 22, 2014

Re: [Pharo-users] Error when trying to initiate Pharo in Ubuntu 64 bits

by Sergi Reyner

2014-04-22 13:11 GMT+01:00 Damien Cassou <damien.cassou(a)gmail.com>: > Hi Gabriel, > > On Tue, Apr 22, 2014 at 1:14 AM, Stephan Eggermont <stephan(a)stack.nl> > wrote: > > Version 11.10 of Ubuntu is no longer supported. That ended nearly a year > ago. That means that there is no heartbleed openssl update, you might need > to compile a safe version from source. And that also means that there is no > recent precompiled pharo for it. If you need to use a machine for a longer > time, you might want to either use a LTS version, or upgrade regularly. > > > Stephan is right. You *must* upgrade your system. Right or not, itÂ´s besides the point. Replace "Ubuntu 11.10" with "Debian 7". Updated system, no heartbleed, and still no Pharo because they are shipping 2.13.

April 22, 2014

Re: [Pharo-users] Curl markup with Pillar

by Damien Cassou

this should get you started: https://github.com/DamienCassou/pillar-documentation Please tell me if you still have problems. Best On Tue, Apr 22, 2014 at 2:46 PM, Robert Shiplett <grshiplett(a)gmail.com> wrote: > Google on Pillar "Pharo" hits some old links. > > But when I got to http://www.smalltalkhub.com/#!/~Pier/Pillar > > this worked fine in the RC inage: > > Gofer new smalltalkhubUser: 'Pier' project: 'Pillar'; configuration; load. > (Smalltalk globals at: #ConfigurationOfPillar) load > > > On 22 April 2014 09:38, Robert Shiplett <grshiplett(a)gmail.com> wrote: >> >> re: Curl markup, as in web markup using declarative style in Curl PL from >> MIT, not cURL ( see www.curlap.com) >> >> My Japanese web pages are now generated using nunjucks + node.js but in >> the hope of using pharo 3 + Seaside on small virtual server, I thought I >> would see what it takes to add Curl markup to the Pilar repertoire. >> >> But the Pharo 3 RC image is giving a walkback over the configuration for >> Pillar, so I may not get to this this morning. >> >> mrkup, mrkdwn >> >> PS >> did any one see the role of an MIT OCaml / emacs guy in the Android visual >> app gen project from MIT ? >> >> PPS >> Curl Android/iOS app gen project is called "caede" as in "maple" (KAEDE) > > -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

April 22, 2014

Re: [Pharo-users] Curl markup with Pillar

by Robert Shiplett

Google on Pillar "Pharo" hits some old links. But when I got to http://www.smalltalkhub.com/#!/~Pier/Pillar this worked fine in the RC inage: Gofer new smalltalkhubUser: 'Pier' project: 'Pillar'; configuration; load. (Smalltalk globals at: #ConfigurationOfPillar) load On 22 April 2014 09:38, Robert Shiplett <grshiplett(a)gmail.com> wrote: > re: Curl markup, as in web markup using declarative style in Curl PL from > MIT, not cURL ( see www.curlap.com) > > My Japanese web pages are now generated using nunjucks + node.js but in > the hope of using pharo 3 + Seaside on small virtual server, I thought I > would see what it takes to add Curl markup to the Pilar repertoire. > > But the Pharo 3 RC image is giving a walkback over the configuration for > Pillar, so I may not get to this this morning. > > mrkup, mrkdwn > > PS > did any one see the role of an MIT OCaml / emacs guy in the Android visual > app gen project from MIT ? > > PPS > Curl Android/iOS app gen project is called "caede" as in "maple" (KAEDE) >

April 22, 2014

Curl markup with Pillar

by Robert Shiplett

re: Curl markup, as in web markup using declarative style in Curl PL from MIT, not cURL ( see www.curlap.com) My Japanese web pages are now generated using nunjucks + node.js but in the hope of using pharo 3 + Seaside on small virtual server, I thought I would see what it takes to add Curl markup to the Pilar repertoire. But the Pharo 3 RC image is giving a walkback over the configuration for Pillar, so I may not get to this this morning. mrkup, mrkdwn PS did any one see the role of an MIT OCaml / emacs guy in the Android visual app gen project from MIT ? PPS Curl Android/iOS app gen project is called "caede" as in "maple" (KAEDE)

April 22, 2014

Re: [Pharo-users] Athens and ellipse drawing

by Igor Stasenko

as for why there's 4 arc segments instead of one, its because of bad approximation, when drawing more that 90 degree arcs. also, in athens, arc segment is defined with following inputs: - end point of previous segment (implicit) - angle - direction (clockwise/counterclockwise) - end point the radius, therefore calculated automatically, because with given set of parameters there's only one way to draw an arc connecting given points. Now if you put angle of 360 degrees, you cannot draw arc without specifying radius, because your end points will coincide, which means there's infinite number of ways to draw full circle passing through a single point, with any radius. cairo using different inputs for specifying arc segments.. - center, radius, start angle, end angle the problem with such parametrization is that it is completely separate from rest of commands (line/move/bezier etc).. and you will be very lucky if your arc will be connected with rest of your path.. because arc's starting point depends on start angle, instead of last point of previous path segment. this was the main reason to use more appropriate parametrization to get rid of inconsistency.. while losing ability to draw full circle with single command.. On 22 April 2014 14:05, Igor Stasenko <siguctua(a)gmail.com> wrote: > > > > On 14 April 2014 13:53, Juraj Kubelka <juraj.kubelka(a)gmail.com> wrote: > >> >> El 14-04-2014, a las 8:21, Juraj Kubelka <juraj.kubelka(a)gmail.com> >> escribiÃ³: >> >> Thank you Stef, >> >> the example helped me a lot to understand how to play with Athens. >> >> The solution is not what I am looking for. If someone starts to play with >> alpha canal, s/he will get unexpected results. >> >> I have finally found an example in C language. It look like this: >> -=-=-=-=- >> cairo_set_line_width (cr, 0.1); >> cairo_save (cr); >> cairo_scale (cr, 1, 0.2); >> cairo_arc (cr, 1.5, 1.5, 1, 0, 2 * M_PI); >> cairo_restore (cr); >> cairo_set_source_rgba (cr, 0, 1, 0, 0.50); >> cairo_stroke (cr); >> -=-=-=-=- >> <tips-ellipse.png> >> >> I do not know how to write the same instructions with Athens. >> >> First, they draw one arc (cairo_arc (cr, 1.5, 1.5, 1, 0, 2 * M_PI);), I >> draw 4 arcs: >> -=-=-=-=- >> canvas >> createPath: [ :builder | >> builder >> absolute; >> moveTo: 0 @ 0.5; >> ccwArcTo: 0.5 @ 0.0 angle: 90 degreesToRadians; >> ccwArcTo: 0.0 @ -0.5 angle: 90 degreesToRadians; >> ccwArcTo: -0.5 @ 0.0 angle: 90 degreesToRadians; >> ccwArcTo: 0 @ 0.5 angle: 90 degreesToRadians ]. >> -=-=-=-=- >> >> >> OK, now I can draw ellipse with just one arc: >> -=-=-=- >> canvas >> createPath: [ :builder | >> builder >> absolute; >> moveTo: 0.5 @ 0; >> arcCenterX: 0 centerY: 0 radius: 0.5 startAngle: 0 endAngle: Float twoPi >> -=-=-=- >> >> Why is this method in private protocol? Why I should not use it? >> >> > because its private.. and implementation specific. > other implementations may not have this method at all, and your code will > simply throw DNU. > And that's why you got the horizontal line btw.. because of using private > protocol bypassing coordinate tracking. > > >> Why I have to use âmoveTo:â? In C-example they do not use it. But I have >> to, otherwise there is an extra line on the canvas: >> >> Well, I see in AthensCairoPathBuilder>>createPath:, there is call of >> "self moveToX: 0 Y: 0.â. If I remove it, I do not have to write âmoveTo: >> 0.5@0â. So, I understand why I have to write it in my code. The question >> is what is the purpose of "self moveToX: 0 Y: 0.â? I guess it simplify some >> situations, am I right? Which one? >> > > the initial moveTo: command lets you set the origin (starting point) of > your path. > if you don't start path with moveTo: command, it is implicitly set to 0@0. > > >> >> There is actual Athens example: >> -=-=-=- >> AthensSceneView new scene: [ :can | >> | path | >> path := can createPath: [ :builder | >> builder >> absolute; >> moveTo: 0.5 @ 0; >> arcCenterX: 0 centerY: 0 radius: 0.5 startAngle: 0 endAngle: Float twoPi >> ]. >> can pathTransform restoreAfter: [ >> can pathTransform scaleBy: 200 @ 50. >> >> (can setStrokePaint: Color red) width: 0.1. >> can drawShape: path. >> ]. >> ] ; >> openInWindow >> -=-=-=- >> >> Thank you, >> Juraj >> >> >> Second, they set line width, before any other action (like cairo_save). I >> do: >> -=-=-=-=- >> canvas pathTransform scaleBy: 200 @ 50. >> (can setStrokePaint: Color red) *width: 0.1*. >> can drawShape: path. >> -=-=-=-=- >> >> So, my result in Athens is like this: >> <Captura de pantalla 2014-04-14 a la(s) 8.18.38.png> >> >> Any idea? The example is explained here<http://cairographics.org/tutorial/#L2linewidth>, >> C source code is here <http://cairographics.org/tutorial/tips-ellipse.c> (by >> clicking on the image in the page<http://cairographics.org/tutorial/#L2linewidth> >> ). >> >> Thank you, >> Jura >> >> El 12-04-2014, a las 4:01, Pharo4Stef <pharo4Stef(a)free.fr> escribiÃ³: >> >> AthensSceneView new >> scene: [ :can | >> | path | >> path := can >> createPath: [ :builder | >> builder >> absolute; >> moveTo: 0 @ 0.5; >> ccwArcTo: 0.5 @ 0.0 angle: 90 degreesToRadians; >> ccwArcTo: 0.0 @ -0.5 angle: 90 degreesToRadians; >> ccwArcTo: -0.5 @ 0.0 angle: 90 degreesToRadians; >> ccwArcTo: 0 @ 0.5 angle: 90 degreesToRadians ]. >> >> can pathTransform >> restoreAfter: [ >> can pathTransform scaleBy: 200 . >> can >> setPaint: Color red ; >> drawShape: path. >> "(athensCanvas setStrokePaint: strokePaint) >> width: (self strokeWidth / self scale) asFloat." >> can drawShape: path.]. >> can pathTransform >> restoreAfter: [ >> can pathTransform scaleBy: 190 . >> can >> setPaint: Color blue ; >> drawShape: path. >> "(athensCanvas setStrokePaint: strokePaint) >> width: (self strokeWidth / self scale) asFloat." >> can drawShape: path >> >> ] >> ] ; >> openInWindow >> >> >> <Screen Shot 2014-04-12 at 09.01.09.pdf> >> >> >> >> > > > -- > Best regards, > Igor Stasenko. > -- Best regards, Igor Stasenko.

April 22, 2014

Re: [Pharo-users] [Pharo-dev] Pillar in TextMate

by Yuriy Tymchuk

On 22 Apr 2014, at 15:08, Damien Cassou <damien.cassou(a)gmail.com> wrote: > On Sun, Apr 20, 2014 at 8:35 AM, Yuriy Tymchuk <yuriy.tymchuk(a)me.com> wrote: >> >> I'm happy to announce that I've created a small bundle for TextMate. You can find it here: https://github.com/Uko/Pillar.tmbundle >> >> Also I've exported it to ATOM (new editor from github) package, but it's crappy because ATOM lacks some stuff right not. Package is called: language-pillar, source is here: https://github.com/Uko/language-pillar > > > great job Yuriy, thanks. I referenced both from > https://github.com/DamienCassou/pillar-documentation Thank you, Damien > > -- > Damien Cassou > http://damiencassou.seasidehosting.st > > "Success is the ability to go from one failure to another without > losing enthusiasm." > Winston Churchill >

April 22, 2014

Re: [Pharo-users] We need *you* for the upcoming Pharo's website

by Damien Cassou

On Mon, Apr 21, 2014 at 10:40 PM, kilon alios <kilon.alios(a)gmail.com> wrote: > I am still on vacations and the internet is very slow here. I will be > able to upload something by the end of this weekend. My idea is to > illustrate 6 points in 6-10 minutes that to my opinion make Pharo a > very useful and fun choice. please do. Even if you are late, we will evaluate your screencast and maybe replace one that is already there. Or put it in a dedicated section somewhere else. We desperately need good screencasts. Thanks for the offer -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

April 22, 2014

Re: [Pharo-users] Error when trying to initiate Pharo in Ubuntu 64 bits

by Damien Cassou

Hi Gabriel, On Tue, Apr 22, 2014 at 1:14 AM, Stephan Eggermont <stephan(a)stack.nl> wrote: > Version 11.10 of Ubuntu is no longer supported. That ended nearly a year ago. That means that there is no heartbleed openssl update, you might need to compile a safe version from source. And that also means that there is no recent precompiled pharo for it. If you need to use a machine for a longer time, you might want to either use a LTS version, or upgrade regularly. Stephan is right. You *must* upgrade your system. Look at this: http://en.wikipedia.org/wiki/Ubuntu_%28operating_system%29#Releases. "Old version" means your system has several security issues that won't get fixed automatically. -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

April 22, 2014