November 2013 - Pharo-users

Re: [Pharo-users] Deploying a polymorph app - two questions

by kmo

Does not work in pharo 3.0 either on my ubuntu system. My VM is dated 13/03/2013. I don't think I'm using a particularly old one. Ken -- View this message in context: http://forum.world.st/Deploying-a-polymorph-app-two-questions-tp4724525p472… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 23, 2013

Re: [Pharo-users] spec and double click

by Benjamin

m := NewListModel new m doubleClickAction: [ self halt ] m openWithSpec This should work Ben On 23 Nov 2013, at 19:23, Lorenz KÃ¶hl <lorenz(a)quub.de> wrote: >> I strongly suggest to use 30 because spec changed a lot. > > Doesn't seem to work either (on yesterdays 30): > > | m | > m := ListModel new items: #(a b c). > m when: #doubleClick send: #traceCr to: Transcript. > m on: #doubleClick send: #traceCr to: Transcript. > "need doubleclick announcement?" > m openWithSpec > > Maybe there's some spec mechanism for adding the EventHandler stuff > to the morphs it creates? > > greetings, > Lo > >

Nov. 23, 2013

Re: [Pharo-users] Deploying a polymorph app - two questions

by Benjamin

On 23 Nov 2013, at 16:13, kmo <voxkmp(a)gmail.com> wrote: > Benjamin - > > Many thanks. > > Your suggestion of World submorphs do: [:e | e delete ] was just what I > needed to get rid of the taskbar. > > However, DisplayScreen hostWindowTitle does not work for me. I'm not using > Spec but surely that should make no difference. Is it a platform bug (I'm on > ubuntu 13.04) or are you using pharo 3.0? I'm on pharo 2.0 (there is no > WorldModel as far as I can see). > > So, is DisplayScreen hostWindowTitle broken on pharo 2.0? Might be, I am on mac + Pharo 3.0 and it works. And I think that the Pharo Launcher uses this feature too and works on ubuntu. So probably a problem in 2.0, or you are using an old vm maybe Ben > > ken > > > > -- > View this message in context: http://forum.world.st/Deploying-a-polymorph-app-two-questions-tp4724525p472… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Nov. 23, 2013

Re: [Pharo-users] spec and double click

by Lorenz KÃ¶hl

> I strongly suggest to use 30 because spec changed a lot. Doesn't seem to work either (on yesterdays 30): | m | m := ListModel new items: #(a b c). m when: #doubleClick send: #traceCr to: Transcript. m on: #doubleClick send: #traceCr to: Transcript. "need doubleclick announcement?" m openWithSpec Maybe there's some spec mechanism for adding the EventHandler stuff to the morphs it creates? greetings, Lo

Nov. 23, 2013

Re: [Pharo-users] spec and double click

by StÃ©phane Ducasse

On Nov 23, 2013, at 6:55 PM, Lorenz KÃ¶hl <lorenz(a)quub.de> wrote: >> Did you check the when* API of ListComposableModel? > > Yes, the closest thing might be whenSelectionChanged but nothing regarding click events as I see it. > >>> >>> How do I register the event handler? I know about on:send:to >> >> when:send:to: > > In my ComposableModel the ListComposable model is 'attributes' so I did in initializeWidgets: > > attributes when: #doubleClick send: #onDoubleClick to: self. > > where the method logs to the transcript. But nothing shows up on a double click. > > I suspect that spec has to setup the morphs it creates for handling (double)clicks and maybe it doesn't? > >> In which Pharo version are you? > Latest 2.0 I strongly suggest to use 30 because spec changed a lot. > > greetings, > Lo > >

Nov. 23, 2013

Re: [Pharo-users] spec and double click

by Lorenz KÃ¶hl

> Did you check the when* API of ListComposableModel? Yes, the closest thing might be whenSelectionChanged but nothing regarding click events as I see it. >> >> How do I register the event handler? I know about on:send:to > > when:send:to: In my ComposableModel the ListComposable model is 'attributes' so I did in initializeWidgets: attributes when: #doubleClick send: #onDoubleClick to: self. where the method logs to the transcript. But nothing shows up on a double click. I suspect that spec has to setup the morphs it creates for handling (double)clicks and maybe it doesn't? > In which Pharo version are you? Latest 2.0 greetings, Lo

Nov. 23, 2013

Re: [Pharo-users] Making more memory available to VM on OS X.

by StÃ©phane Ducasse

Probably because you should cache the result you get and not redraw it all the time. You should control when you want to redraw it. So your Morph should hold a form or something like that. Stef On Nov 23, 2013, at 6:03 PM, Ignacio MatÃas Sniechowski <0800nacho(a)gmail.com> wrote: > Thanks for the attachments I will take a look at them. > The time it takes to render the fractal is not the problem. But after that, if I want to drag or resize the window the fractal has been draw into, the sluggish begins. Even with the fast dragging option checked. Also, closing and opening other windows become sluggish. > thank > take care > Nacho > > > Lic. Ignacio Sniechowski, MBA > > > > > > > > On Sat, Nov 23, 2013 at 1:40 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > > On Nov 23, 2013, at 5:25 PM, nacho <0800nacho(a)gmail.com> wrote: > > > Hi, > > I'm doing some fractal drawings which requires a great number of iterations > > and point drawing. > > Once the given fractal set is rendered Pharo becomes very sluggish. > > This is strange. I can understand that pharo takes time to compute a fractal but I do not see why it would be sluggish after. > > > > > Is there > > a way to allocate more memory to the VM upon starting it? > > thanks > > Nacho > > > > > > > > > > ----- > > Nacho > > Smalltalker apprentice. > > Buenos Aires, Argentina. > > -- > > View this message in context: http://forum.world.st/Making-more-memory-available-to-VM-on-OS-X-tp4724556.… > > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > > > >

Nov. 23, 2013

Re: [Pharo-users] How to combine Pharo Desktop and Seaside?

by StÃ©phane Ducasse

this is a cool two pages getting started. We should really put it on the Collabactive book. On Nov 22, 2013, at 12:08 PM, Torsten Bergmann <astares(a)gmx.de> wrote: > Hi, > > If you want to write your collection to a static HTML page you can > > |aCollection| > aCollection := #('Smalltalk' 'Object'). > > FileSystem workingDirectory / 'test.html' writeStreamDo: [:stream | > stream nextPutAll: '<html><head></head><body><ol>'. > aCollection do: [:each | stream > nextPutAll: '<li>'; > nextPutAll: each asString ]. > stream nextPutAll: '</ol></body><html>']. > > and then serve it from an external webserver (like Apache or Nginx). > But this is static html file generation. > > > I'm sure you want something more dynamic. So you can serve the contents right from the > image using one of the Smalltalk webframeworks like Seaside or Aida. Here is a short > Seaside HOWTO for this: > > > Prepare an image with Seaside > ============================= > - download Pharo 2.0 from www.pharo.org > - start it, then select "Tools" -> "ConfigurationBrowser" from the world menu to > open a list of additional loadable packages > - search for "Seaside3" and click on "Install", this will install the seaside web framework > into your image > - When loading is finished just open a workspace ("Workspace" from world menu) and evaluate > > ZnZincServerAdaptor startOn: 8080 > > This will start a local webserver right from your Pharo image on the given port. > > - check with a web browser (Firefox, Chrome, IE, ...) that Seaside is running by > opening http://localhost:8080 There you can browse first Seaside examples. > > As an alternative to the above steps you can also download a premade Seaside distribution > from http://seaside.st > > Implement your own webapp > ========================= > - open the Nautlius System browser ("SystemBrowser" from the world menu) > - implement an own Seaside component class > > WAComponent subclass: #MyHome > instanceVariableNames: '' > classVariableNames: '' > poolDictionaries: '' > category: 'KillerApp-Web-UI' > > - now register this class for Seaside by evaluating the following expression in a workspace > > WAAdmin register: MyHome asApplicationAt: 'killerapp' > > This registers your component as an own custom seaside application under /killerapp. > > - so if you point your browser now to http://localhost:8080/killerapp you will see an empty > page - but it means you application is there but has not yet some content > > - now implement an instance side method called #renderContentOn: on the MyHome class > > renderContentOn: html > "Render a collection as html list" > > |coll| > coll := #('Seaside' 'is' 'really' 'cool'). > html orderedList list: coll. > > - refresh your browser on http://localhost:8080/killerapp you will now see the contents of > the collection > > How to continue > =============== > Read books, try to implement something and if in doubt just ask on the mailinglist. There is also > a seaside mailinglist http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside > > Learn about Pharo by getting on of these books: > http://pharobyexample.org/ > http://rmod.lille.inria.fr/pbe2/ > > learn about Seaside > http://book.seaside.st/book > > learn about Smalltalk in general with these free books: > http://stephane.ducasse.free.fr/FreeBooks.html > > >

Nov. 23, 2013

Re: [Pharo-users] Making more memory available to VM on OS X.

by Ignacio MatÃas Sniechowski

Thanks for the attachments I will take a look at them. The time it takes to render the fractal is not the problem. But after that, if I want to drag or resize the window the fractal has been draw into, the sluggish begins. Even with the fast dragging option checked. Also, closing and opening other windows become sluggish. thank take care Nacho *Lic. Ignacio Sniechowski, MBA* On Sat, Nov 23, 2013 at 1:40 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > > On Nov 23, 2013, at 5:25 PM, nacho <0800nacho(a)gmail.com> wrote: > > > Hi, > > I'm doing some fractal drawings which requires a great number of > iterations > > and point drawing. > > Once the given fractal set is rendered Pharo becomes very sluggish. > > This is strange. I can understand that pharo takes time to compute a > fractal but I do not see why it would be sluggish after. > > > > > Is there > > a way to allocate more memory to the VM upon starting it? > > thanks > > Nacho > > > > > > > > > > ----- > > Nacho > > Smalltalker apprentice. > > Buenos Aires, Argentina. > > -- > > View this message in context: > http://forum.world.st/Making-more-memory-available-to-VM-on-OS-X-tp4724556.… > > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > > > >

Nov. 23, 2013

Re: [Pharo-users] spec and double click

by StÃ©phane Ducasse

> > I have a ListComposableModel rendered with spec that I want to do something if an element is double clicked. for double clicked I do not know. Did you check the when* API of ListComposableModel? > > How do I register the event handler? I know about on:send:to when:send:to: > but what Announcement do I use? In my testing with just a symbol #doubleClick it doesn't work (and probably isn't supposed to). In which Pharo version are you? > > thanks, > Lo

Nov. 23, 2013

Re: [Pharo-users] NativeBoost Questions while wrapping FMOD

by Denis Kudriashov

Hi 2013/11/22 Igor Stasenko <siguctua(a)gmail.com> > > >> 2. instead of returning useful objects, FMOD returns error codes and you >> pass a pointer to receive the object. >> >> - The first consequence is that I have to wrap all the calls e.g. "self >> processErrorCode: self primCreate." where >> processErrorCode: anInteger >> anInteger = 0 ifFalse: [ self error: 'FMOD returned error code ', >> anInteger >> asString ]. >> Is there a more graceful way to do that? >> >> i doubt so.. since it is library API which dictates you to use it in > certain way. > The proper error handling never hurts (except from causing extra code > bloat, of course :) > Is it good idea to override (or create new) #nbCall: method to handle library common logic? (when any library function returns error code)

Nov. 23, 2013

Re: [Pharo-users] Making more memory available to VM on OS X.

by StÃ©phane Ducasse

On Nov 23, 2013, at 5:25 PM, nacho <0800nacho(a)gmail.com> wrote: > Hi, > I'm doing some fractal drawings which requires a great number of iterations > and point drawing. > Once the given fractal set is rendered Pharo becomes very sluggish. This is strange. I can understand that pharo takes time to compute a fractal but I do not see why it would be sluggish after. > Is there > a way to allocate more memory to the VM upon starting it? > thanks > Nacho > > > > > ----- > Nacho > Smalltalker apprentice. > Buenos Aires, Argentina. > -- > View this message in context: http://forum.world.st/Making-more-memory-available-to-VM-on-OS-X-tp4724556.… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Nov. 23, 2013

Making more memory available to VM on OS X.

by nacho

Hi, I'm doing some fractal drawings which requires a great number of iterations and point drawing. Once the given fractal set is rendered Pharo becomes very sluggish. Is there a way to allocate more memory to the VM upon starting it? thanks Nacho ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Making-more-memory-available-to-VM-on-OS-X-tp4724556.… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 23, 2013

spec and double click

by Lorenz KÃ¶hl

I have a ListComposableModel rendered with spec that I want to do something if an element is double clicked. How do I register the event handler? I know about on:send:to but what Announcement do I use? In my testing with just a symbol #doubleClick it doesn't work (and probably isn't supposed to). thanks, Lo

Nov. 23, 2013

Re: [Pharo-users] Deploying a polymorph app - two questions

by kmo

Benjamin - Many thanks. Your suggestion of World submorphs do: [:e | e delete ] was just what I needed to get rid of the taskbar. However, DisplayScreen hostWindowTitle does not work for me. I'm not using Spec but surely that should make no difference. Is it a platform bug (I'm on ubuntu 13.04) or are you using pharo 3.0? I'm on pharo 2.0 (there is no WorldModel as far as I can see). So, is DisplayScreen hostWindowTitle broken on pharo 2.0? ken -- View this message in context: http://forum.world.st/Deploying-a-polymorph-app-two-questions-tp4724525p472… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 23, 2013

Re: [Pharo-users] [Athens] Finding if a line passes through a specific pixel .

by kilon alios

aaaaaahhh come on ... I am not THAT lazy :D of course I have searched it before asking. Unless I am blind I see loads of bezier methods, none that detects whether a point belong to a curve. But now you mention it I think I remember squeak was able to do add points to a curve via click or something similar, because thats what I wan to do. So I will take a look at it , most probably there is a method in there that does this. I want the user to click on a curve or line and there a new control point will be placed that will allow the user to shape the line or curve to a finer detail. A standard feature for all vector editors , 3d editors, even image editors. I am sorry if I miss something obvious here, its not laziness , its most likely stupidity or just the fact I am very new with this. This is the first time I try to make a vector editor.Again thank you all for trying to help me, you have done already a lot. On Sat, Nov 23, 2013 at 3:38 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > > > On Nov 23, 2013, at 11:24 AM, kilon alios <kilon.alios(a)gmail.com> wrote: > > would I sound too lazy to ask in which class ? > > > On Sat, Nov 23, 2013 at 11:35 AM, StÃ©phane Ducasse < > stephane.ducasse(a)inria.fr> wrote: > >> there are bezier algo in the system >> >> Stef >> >> On Nov 20, 2013, at 9:55 PM, kilon alios <kilon.alios(a)gmail.com> wrote: >> >> yes I found the formula for straight lines and I was wondering what was >> the one for bezier curves, so your reply could not have come a better >> moment. Thanks I will study it and implement it. >> >> >> On Wed, Nov 20, 2013 at 9:21 PM, Hilaire Fernandes < >> hilaire.fernandes(a)gmail.com> wrote: >> >>> Hello, >>> >>> You may want to calculate the distance between the mouse position and >>> your path (I guess a bezier curve). Then given this distance and a >>> tolerance to zero you decide if the mouse position is more or less on >>> your path. Calculating the distance you will also get for free the place >>> where to add a point on your path. >>> >>> http://blog.gludion.com/2009/08/distance-to-quadratic-bezier-curve.html >>> >>> Hilaire >>> >>> >>> Le 14/11/2013 21:07, kilon alios a Ã©crit : >>> > In order to do that I will have to check that the line passes through a >>> > specific pixel. Or to be more correct that the place that mouse has >>> > clicked is where my path passes through. How I do that ? Can Athens do >>> > that ? Can athens tell me which pixels my path passes through ? >>> > >>> >>> >>> -- >>> Dr. Geo http://drgeo.eu >>> >>> >>> >> >> > > >

Nov. 23, 2013

Re: [Pharo-users] Spec - Tutorial Series

by StÃ©phane Ducasse

> When a Spec UI is build, the spec are looked up on class side. > > But in some special cases you can provide directly a SpecLayout object to a model. > > > Why on class side? > The goal was to have a static description of a widget layout so that we can reuse it without to have to automatically create an instance. > > Ben

Nov. 23, 2013

Re: [Pharo-users] [Athens] Finding if a line passes through a specific pixel .

by StÃ©phane Ducasse

On Nov 23, 2013, at 11:24 AM, kilon alios <kilon.alios(a)gmail.com> wrote: > would I sound too lazy to ask in which class ? > > > On Sat, Nov 23, 2013 at 11:35 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > there are bezier algo in the system > > Stef > > On Nov 20, 2013, at 9:55 PM, kilon alios <kilon.alios(a)gmail.com> wrote: > >> yes I found the formula for straight lines and I was wondering what was the one for bezier curves, so your reply could not have come a better moment. Thanks I will study it and implement it. >> >> >> On Wed, Nov 20, 2013 at 9:21 PM, Hilaire Fernandes <hilaire.fernandes(a)gmail.com> wrote: >> Hello, >> >> You may want to calculate the distance between the mouse position and >> your path (I guess a bezier curve). Then given this distance and a >> tolerance to zero you decide if the mouse position is more or less on >> your path. Calculating the distance you will also get for free the place >> where to add a point on your path. >> >> http://blog.gludion.com/2009/08/distance-to-quadratic-bezier-curve.html >> >> Hilaire >> >> >> Le 14/11/2013 21:07, kilon alios a Ã©crit : >> > In order to do that I will have to check that the line passes through a >> > specific pixel. Or to be more correct that the place that mouse has >> > clicked is where my path passes through. How I do that ? Can Athens do >> > that ? Can athens tell me which pixels my path passes through ? >> > >> >> >> -- >> Dr. Geo http://drgeo.eu >> >> >> > >

Nov. 23, 2013

Re: [Pharo-users] Deploying a polymorph app - two questions

by Benjamin

On 23 Nov 2013, at 13:58, kmo <voxkmp(a)gmail.com> wrote: > I have written a small Polymorph application in Pharo 2.0. I have some > questions about deploying it. > > My app consists of a single morph. I would like to fill the pharo window > with the morph and have the morph resize when the user resizes the pharo > window. > > I'm pretty close to what I want. I have made my morph a subclass of > FullscreenMorph and it is filling the window nicely. > > I just need two things. > > One - I need to change the pharo window title to the title of my > application. I have tried DisplayScreen hostWindowTitle and it seems to have > no effect. In Spec, I use DisplayScreen hostWindowTitle: aString, and it works. > Two - I need to get rid of the Pharo window status bar - the one at the > bottom which shows you the various windows, browsers, and workspaces you > have open. World changeProportionalLayout. World submorphs do: [:e | e delete ]. (Smalltalk at: #PolymorphSystemSettings) perform: #desktopColor: with: (Color r: 0.78 g: 0.753 b: 0.71). ((Smalltalk at: #UITheme) perform: #currentSettings) perform: #windowColor: with: (Color r: 0.745 g: 0.745 b: 0.745). (Smalltalk at: #TaskbarMorph) perform: #showTaskbar: with: false Thatâs what I do in Spec :) For more info, you can have a look at WorldModel Ben > > Can anyone give me some guidance? > > Thanks. > > > > -- > View this message in context: http://forum.world.st/Deploying-a-polymorph-app-two-questions-tp4724525.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Nov. 23, 2013

Deploying a polymorph app - two questions

by kmo

I have written a small Polymorph application in Pharo 2.0. I have some questions about deploying it. My app consists of a single morph. I would like to fill the pharo window with the morph and have the morph resize when the user resizes the pharo window. I'm pretty close to what I want. I have made my morph a subclass of FullscreenMorph and it is filling the window nicely. I just need two things. One - I need to change the pharo window title to the title of my application. I have tried DisplayScreen hostWindowTitle and it seems to have no effect. Two - I need to get rid of the Pharo window status bar - the one at the bottom which shows you the various windows, browsers, and workspaces you have open. Can anyone give me some guidance? Thanks. -- View this message in context: http://forum.world.st/Deploying-a-polymorph-app-two-questions-tp4724525.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 23, 2013

Re: [Pharo-users] [Athens] Finding if a line passes through a specific pixel .

by btc＠openinworld.com

Nov. 23, 2013

Re: [Pharo-users] [Athens] Finding if a line passes through a specific pixel .

by kilon alios

would I sound too lazy to ask in which class ? On Sat, Nov 23, 2013 at 11:35 AM, StÃ©phane Ducasse < stephane.ducasse(a)inria.fr> wrote: > there are bezier algo in the system > > Stef > > On Nov 20, 2013, at 9:55 PM, kilon alios <kilon.alios(a)gmail.com> wrote: > > yes I found the formula for straight lines and I was wondering what was > the one for bezier curves, so your reply could not have come a better > moment. Thanks I will study it and implement it. > > > On Wed, Nov 20, 2013 at 9:21 PM, Hilaire Fernandes < > hilaire.fernandes(a)gmail.com> wrote: > >> Hello, >> >> You may want to calculate the distance between the mouse position and >> your path (I guess a bezier curve). Then given this distance and a >> tolerance to zero you decide if the mouse position is more or less on >> your path. Calculating the distance you will also get for free the place >> where to add a point on your path. >> >> http://blog.gludion.com/2009/08/distance-to-quadratic-bezier-curve.html >> >> Hilaire >> >> >> Le 14/11/2013 21:07, kilon alios a Ã©crit : >> > In order to do that I will have to check that the line passes through a >> > specific pixel. Or to be more correct that the place that mouse has >> > clicked is where my path passes through. How I do that ? Can Athens do >> > that ? Can athens tell me which pixels my path passes through ? >> > >> >> >> -- >> Dr. Geo http://drgeo.eu >> >> >> > >

Nov. 23, 2013

Re: [Pharo-users] NativeBoost Questions while wrapping FMOD

by kilon alios

However we should acknowledge here that using a FFI, any FFI , in any programming language has the mandatory requirement of knowing C. I certainly do believe that documenting Nativeboost is extremely important for helping people to port C libraries to pharo and making Pharo far more useful but we should not kid ourselves. Coding with Nativeboost even though its inside Pharo , even though its smalltalk syntax, even though it has the tools to make your life easier, its still C coding or even Assembly coding if you are brave enough to use the inline assembler. I want to help with documentation the problem is that I dont know a lot of stuff about Nativeboost besides the basic pointer things I did with NBOpenGL. On Sat, Nov 23, 2013 at 10:10 AM, StÃ©phane Ducasse < stephane.ducasse(a)inria.fr> wrote: > > On Nov 23, 2013, at 9:07 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > wrote: > > I really think that NativeBoost MUST HAVE a decent documentation. > It is a central part of Pharo and Igor you should do something about it. > If I would know I would have written a chapter on it but I cannot because > I DO NOT KNOW. > > > And igor do not tell me that only C programmer should use NativeBoost. > We should focus on our clients and our clients are smart Pharoers that can > learn fast. > > > Stef > > > > > On 21 November 2013 22:40, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > >> I'm wrapping the FMOD cross-platform audio library. The code is MIT and >> lives >> at http://smalltalkhub.com/#!/~SeanDeNigris/FMOD >> >> ======== >> Problem #1: >> ======== >> >> I'm calling into the FMOD library with: >> primStoreIsPlaying: channelHandle in: isPlayingHandle >> <primitive: #primitiveNativeCall module: #NativeBoostPlugin> >> >> "FMOD_RESULT FMOD_Channel_IsPlaying( >> FMOD_CHANNEL *channel, >> bool *isplaying);" >> >> ^ self nbCall: #(FMOD_RESULT >> FMOD_Channel_IsPlaying(NBExternalAddress >> channel, NBExternalAddress isPlayingHandle)). >> >> I call the above with: >> isPlaying >> | isPlaying | >> isPlaying := NBExternalAddress new. >> self primStoreIsPlaying: channel in: isPlaying. >> ^ isPlaying value > 0. >> >> isPlaying is always 0. The method works directly from C with: >> int isPlaying = 1; >> while (isPlaying) { >> FMOD_Channel_IsPlaying(channel, &isPlaying); >> } >> >> I also tried changing the callout signature to "... bool* >> isPlayingHandle)" >> and passing "isPlaying := true." instead of using the NBExternalAddress >> stuff. >> >> err.. again, you must pass an address where value will be stored, > > ^ self nbCall: #(FMOD_RESULT FMOD_Channel_IsPlaying( >> >> NBExternalAddress channel, NBExternalAddress * isPlayingHandle)). > > otherwise you passing NULL pointer, and i quite surprised it not segfaults > when you call it like that (looks like they have a check in the library ) > > you can also use NBExternalTypeValue for that: > > boolValueClass := NBExternalTypeValue ofType: 'bool'. "sure thing, > creating anonymous class for each call is overkill, this should be done > once, somewhere else" > > boolValue := boolValueClass new. > > self callTheThingWith: boolValue. > > boolValue value ifTrue: [... blah] > > (and this will work, assuming you have bool* in signature for this > argument). > > I have a few more questions, but this is the most pressing as it's holding >> up any further development. >> >> Thanks! >> >> >> >> ----- >> Cheers, >> Sean >> -- >> View this message in context: >> http://forum.world.st/NativeBoost-Questions-while-wrapping-FMOD-tp4724116.h… >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com<http://nabble.com/> >> . >> >> > > > -- > Best regards, > Igor Stasenko. > > > >

Nov. 23, 2013

Re: [Pharo-users] [Athens] Finding if a line passes through a specific pixel .

by StÃ©phane Ducasse

there are bezier algo in the system Stef On Nov 20, 2013, at 9:55 PM, kilon alios <kilon.alios(a)gmail.com> wrote: > yes I found the formula for straight lines and I was wondering what was the one for bezier curves, so your reply could not have come a better moment. Thanks I will study it and implement it. > > > On Wed, Nov 20, 2013 at 9:21 PM, Hilaire Fernandes <hilaire.fernandes(a)gmail.com> wrote: > Hello, > > You may want to calculate the distance between the mouse position and > your path (I guess a bezier curve). Then given this distance and a > tolerance to zero you decide if the mouse position is more or less on > your path. Calculating the distance you will also get for free the place > where to add a point on your path. > > http://blog.gludion.com/2009/08/distance-to-quadratic-bezier-curve.html > > Hilaire > > > Le 14/11/2013 21:07, kilon alios a Ã©crit : > > In order to do that I will have to check that the line passes through a > > specific pixel. Or to be more correct that the place that mouse has > > clicked is where my path passes through. How I do that ? Can Athens do > > that ? Can athens tell me which pixels my path passes through ? > > > > > -- > Dr. Geo http://drgeo.eu > > >

Nov. 23, 2013

Re: [Pharo-users] Cleaning up Voyage Documentation

by StÃ©phane Ducasse

excellent we love co-authors Stef On Nov 20, 2013, at 9:04 PM, Johan Fabry <jfabry(a)dcc.uchile.cl> wrote: > Hi all, > > I am building a small app that uses Voyage and MongoDB as the database, and so I had many questions regarding how to use it and found the documentation lacking. After conversing with Esteban, I proposed that I improve the 'Pharo for the enterprise' chapter on Voyage, based on his responses to my questions. (See https://ci.inria.fr/pharo-contribution/job/PharoForTheEnterprise/lastSucces… and https://github.com/SquareBracketAssociates/PharoForTheEnterprise-english/tr… for the sources) > > So a heads-up: I would like to take a 'lock' on that text for some days (to avoid conflicts and the associated unpleasantness), as I go improving and expanding it in the next few days. > > Also, if you have questions and/or remarks about Voyage and/or the documentation, shoot! I will do my best to address them. > > Greetings, > > ---> Save our in-boxes! http://emailcharter.org <--- > > Johan Fabry - http://pleiad.cl/~jfabry > PLEIAD lab - Computer Science Department (DCC) - University of Chile > >

Nov. 23, 2013