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

Re: [Pharo-users] Calculate angle between two vectors (probably @Igor :)

by Nicolai Hess

2014-03-19 8:49 GMT+01:00 MartinW <wm(a)fastmail.fm>: > Nicolai Hess wrote > > This was of course wrong, I don't know what the > > other method computes, but not the angle between two vectors. > > Yes i also wrote a test and i think my method is right. > > > Nicolai Hess wrote > > Now the question is, why do you think your method is wrong / the boids > > behave wrong? > > When i use my method to calculate the field of vision the Boids always fly > from top left to down right and if i turn on the circling option, they > crowd > in the bottom right quadrant. > If i give them a 360 degree field of vision by always returning true for > isInFieldOfVision they behave correctly. This means they fly in a nice > circle around the center and if circling is turned off, the swarm flies in > different directions each time you start the simulation. > > Perhaps the problem is not the calculation of the angle but is in the > isInFieldOfVision: method... > :) yes and I think the testcases in testIsInFieldOfVision are wrong, or I misunderstand how the boids are moving. in testIsInFieldOfVision subject has velocity 100@0, I understand this as "moves from left to right". testobject other2 and other3 are above and below subect, and not behind and in front, both should be visible with the fieldOfView. Btw. the field of view is rather big, 0.75*Float Pi is 135 degree, but clock *and* counterclockwise -> 270 degree field of view. And it is funny to change the field of view to 0, after the boids started. > > > > -- > View this message in context: > http://forum.world.st/Calculate-angle-between-two-vectors-probably-Igor-tp4… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

March 19, 2014

Re: [Pharo-users] What's wrong whith this code?

by PBK Research

Note however that the first example used in the method comment, which displays a static label, does work. There is something wrong in the method of computing the changing label in the second example. I can't follow the code here, so I can't see the error, but it should be clear where to look. Peter Kenny _____ From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of Nicolai Hess Sent: 19 March 2014 08:56 To: Any question about pharo is welcome Subject: Re: [Pharo-users] What's wrong whith this code? 2014-03-19 8:17 GMT+01:00 Friedrich Dominicus <frido(a)q-software-solutions.de>: Bernat Romagosa <tibabenfortlapalanca(a)gmail.com> writes: > ouch, I added a . in the middle, sorry! > > elements := #('eins' 'zwei' 'drei' 'vier'). > elements > do: [ :element | (Delay forSeconds: 2) wait ] > displayingProgress: [ :element | 'Working on', element asString ]. > > 2014-03-18 9:55 GMT+01:00 Bernat Romagosa > <tibabenfortlapalanca(a)gmail.com>: > > Without having tried it, I think you're missing a #wait message in > there: > > > > elements := #('eins' 'zwei' 'drei' 'vier'). > elements do: [ :element | (Delay forSeconds: 2) wait ]. > > displayingProgress: [ :element | 'Working on', element asString ]. Sorry even with that I do not see the 'Working on ' message. It's just a progress bar with nothing else. No "Working on" anywhere. Regards Friedrich It doesn't work anymore. (This worked in Pharo 1.4) In the comment of Collection>>do:displayingProgress: is a example, that doesn't work: Smalltalk allClasses do:[:aClass| (Delay forMilliseconds: 1) wait] displayingProgress:[:aClass| 'Processing ', aClass name]. This should show the class names but it shows only a single progressbar.

March 19, 2014

Re: [Pharo-users] What's wrong whith this code?

by Nicolai Hess

2014-03-19 8:17 GMT+01:00 Friedrich Dominicus <frido(a)q-software-solutions.de >: > Bernat Romagosa <tibabenfortlapalanca(a)gmail.com> writes: > > > ouch, I added a . in the middle, sorry! > > > > elements := #('eins' 'zwei' 'drei' 'vier'). > > elements > > do: [ :element | (Delay forSeconds: 2) wait ] > > displayingProgress: [ :element | 'Working on', element asString ]. > > > > 2014-03-18 9:55 GMT+01:00 Bernat Romagosa > > <tibabenfortlapalanca(a)gmail.com>: > > > > Without having tried it, I think you're missing a #wait message in > > there: > > > > > > > > elements := #('eins' 'zwei' 'drei' 'vier'). > > elements do: [ :element | (Delay forSeconds: 2) wait ]. > > > > displayingProgress: [ :element | 'Working on', element asString ]. > Sorry even with that I do not see the 'Working on ' message. > It's just a progress bar with nothing else. No "Working on" anywhere. > > Regards > Friedrich > > It doesn't work anymore. (This worked in Pharo 1.4) In the comment of Collection>>do:displayingProgress: is a example, that doesn't work: Smalltalk allClasses do:[:aClass| (Delay forMilliseconds: 1) wait] displayingProgress:[:aClass| 'Processing ', aClass name]. This should show the class names but it shows only a single progressbar.

March 19, 2014

Pharo3 release delayed!

by Esteban Lorenzano

Ladies and gentlemen, For achieving a great 3.0 release we still have some tasks that we still need to prepare. They are not many, but we (Pharo Board) think it deserves some more effort: 1) Technically, there are still some minor bugs to tackle around RPackage and Nautilus. We do not miss much and that could be done in a couple of days work (in fact, I'm working on them and trying to have it before going to Argentina next week), but in order to be sure, we better wait a bit :). It would be great to see more eyeballs focused on these issues. 2) We want to create a real marketing strategy this time, and that requires preparation time. "Marketing strategy" sounds probably really bombastic, but in our case it means to create pages, send mails, construct the progress log, etc. We we need some time to prepare it properly. So... Pharo3 release date has been moved to April 22. Cheers, Esteban

March 19, 2014

Re: [Pharo-users] Calculate angle between two vectors (probably @Igor :)

by MartinW

Nicolai Hess wrote > This was of course wrong, I don't know what the > other method computes, but not the angle between two vectors. Yes i also wrote a test and i think my method is right. Nicolai Hess wrote > Now the question is, why do you think your method is wrong / the boids > behave wrong? When i use my method to calculate the field of vision the Boids always fly from top left to down right and if i turn on the circling option, they crowd in the bottom right quadrant. If i give them a 360 degree field of vision by always returning true for isInFieldOfVision they behave correctly. This means they fly in a nice circle around the center and if circling is turned off, the swarm flies in different directions each time you start the simulation. Perhaps the problem is not the calculation of the angle but is in the isInFieldOfVision: method... -- View this message in context: http://forum.world.st/Calculate-angle-between-two-vectors-probably-Igor-tp4… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 19, 2014

Re: [Pharo-users] [Seaside] [ANN] Rickshaw.js charting library for Seaside

by phil＠highoctane.be

Oooh, very cool. I am in need of using some data from RRDs, this looks like pretty interesting to me. Anyone doing just that? Phil On Wed, Mar 19, 2014 at 2:26 AM, Esteban A. Maringolo <emaringolo(a)gmail.com>wrote: > I just uploaded to SmalltalkHub an initial wrapper for the Rickshaw.js > charting library (http://code.shutterstock.com/rickshaw/) > > As usual, you can load it with the following expression: > > Gofer it > smalltalkhubUser: 'emaringolo' project: 'rickshaw'; > package: 'ConfigurationOfRickshaw'; > load. > > (Smalltalk at: #ConfigurationOfRickshaw) project development load: 'All' > > This will load all the packages, including a Seaside component > installed at '/rickshaw' containing various examples. > > It is an initial version and my first package uploaded to > SmalltalkHub, so bugs and and mistakes are expected :) > > Questions are welcome too. > > Regards, > > Esteban A. Maringolo > _______________________________________________ > seaside mailing list > seaside(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside >

March 19, 2014

Re: [Pharo-users] What's wrong whith this code?

by Friedrich Dominicus

Bernat Romagosa <tibabenfortlapalanca(a)gmail.com> writes: > ouch, I added a . in the middle, sorry! > > elements := #('eins' 'zwei' 'drei' 'vier'). > elements > do: [ :element | (Delay forSeconds: 2) wait ] > displayingProgress: [ :element | 'Working on', element asString ]. > > 2014-03-18 9:55 GMT+01:00 Bernat Romagosa > <tibabenfortlapalanca(a)gmail.com>: > > Without having tried it, I think you're missing a #wait message in > there: > > > > elements := #('eins' 'zwei' 'drei' 'vier'). > elements do: [ :element | (Delay forSeconds: 2) wait ]. > > displayingProgress: [ :element | 'Working on', element asString ]. Sorry even with that I do not see the 'Working on ' message. It's just a progress bar with nothing else. No "Working on" anywhere. Regards Friedrich

March 19, 2014

[ANN] Rickshaw.js charting library for Seaside

by Esteban A. Maringolo

I just uploaded to SmalltalkHub an initial wrapper for the Rickshaw.js charting library (http://code.shutterstock.com/rickshaw/) As usual, you can load it with the following expression: Gofer it smalltalkhubUser: 'emaringolo' project: 'rickshaw'; package: 'ConfigurationOfRickshaw'; load. (Smalltalk at: #ConfigurationOfRickshaw) project development load: 'All' This will load all the packages, including a Seaside component installed at '/rickshaw' containing various examples. It is an initial version and my first package uploaded to SmalltalkHub, so bugs and and mistakes are expected :) Questions are welcome too. Regards, Esteban A. Maringolo

March 19, 2014

Re: [Pharo-users] [ANN] ArchLinux pharo-vm / pharo-launcher packages

by Ignacio Sniechowski

Thanks a lot. This is great news! Cheers Nacho > El 18/03/2014, a las 18:40, Laurent Laffont <laurent.laffont(a)gmail.com> escribiÃ³: > > Hi ArchLinux users, > > you can now install pharo vm on Arch with: > > $ yaourt pharo-vm-latest > > then > > $ pharo /path/to/your/image > > > There's also a pharo-launcher package that depends on pharo-vm: > > $ yaourt pharo-launcher > > then > > $ pharo-launcher > > or use your favorite desktop main menu and click on the Pharo icon > > AUR entries: > https://aur.archlinux.org/packages/pharo-vm-latest/ > https://aur.archlinux.org/packages/pharo-launcher/ > > PKGBUILDs are versionned on https://github.com/lolgzs/pharo-aur > > > Thanks for testing ! > > > Regards, > > Laurent >

March 18, 2014

[ANN] ArchLinux pharo-vm / pharo-launcher packages

by Laurent Laffont

Hi ArchLinux users, you can now install pharo vm on Arch with: $ yaourt pharo-vm-latest then $ pharo /path/to/your/image There's also a pharo-launcher package that depends on pharo-vm: $ yaourt pharo-launcher then $ pharo-launcher or use your favorite desktop main menu and click on the Pharo icon AUR entries: https://aur.archlinux.org/packages/pharo-vm-latest/ https://aur.archlinux.org/packages/pharo-launcher/ PKGBUILDs are versionned on https://github.com/lolgzs/pharo-aur Thanks for testing ! Regards, Laurent

March 18, 2014